| 1 | #!/usr/local/bin/python |
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| 2 | |
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| 3 | import os,sys |
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| 4 | |
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| 5 | import re |
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| 6 | import random |
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| 7 | import string |
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| 8 | import subprocess |
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| 9 | import tempfile |
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| 10 | import copy |
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| 11 | import pickle |
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| 12 | import logging |
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| 13 | import signal |
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| 14 | import time |
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| 15 | |
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| 16 | import traceback |
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| 17 | # For parsing visualization output and splitter output |
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| 18 | import xml.parsers.expat |
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| 19 | |
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| 20 | from threading import * |
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| 21 | from subprocess import * |
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| 22 | |
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| 23 | from util import * |
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| 24 | from fedid import fedid, generate_fedid |
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| 25 | from remote_service import xmlrpc_handler, soap_handler, service_caller |
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| 26 | from service_error import service_error |
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| 27 | |
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| 28 | |
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| 29 | class nullHandler(logging.Handler): |
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| 30 | def emit(self, record): pass |
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| 31 | |
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| 32 | fl = logging.getLogger("fedd.experiment_control") |
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| 33 | fl.addHandler(nullHandler()) |
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| 34 | |
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| 35 | class experiment_control_local: |
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| 36 | """ |
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| 37 | Control of experiments that this system can directly access. |
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| 38 | |
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| 39 | Includes experiment creation, termination and information dissemination. |
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| 40 | Thred safe. |
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| 41 | """ |
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| 42 | |
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| 43 | class ssh_cmd_timeout(RuntimeError): pass |
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| 44 | |
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| 45 | class list_log: |
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| 46 | """ |
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| 47 | Provide an interface that lets logger.StreamHandler s write to a list |
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| 48 | of strings. |
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| 49 | """ |
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| 50 | def __init__(self, l=[]): |
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| 51 | """ |
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| 52 | Link to an existing list or just create a log |
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| 53 | """ |
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| 54 | self.ll = l |
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| 55 | self.lock = RLock() |
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| 56 | def write(self, str): |
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| 57 | """ |
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| 58 | Add the string to the log. Lock for consistency. |
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| 59 | """ |
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| 60 | self.lock.acquire() |
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| 61 | self.ll.append(str) |
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| 62 | self.lock.release() |
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| 63 | |
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| 64 | def flush(self): |
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| 65 | """ |
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| 66 | No-op that StreamHandlers expect |
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| 67 | """ |
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| 68 | pass |
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| 69 | |
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| 70 | |
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| 71 | class thread_pool: |
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| 72 | """ |
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| 73 | A class to keep track of a set of threads all invoked for the same |
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| 74 | task. Manages the mutual exclusion of the states. |
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| 75 | """ |
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| 76 | def __init__(self, nthreads): |
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| 77 | """ |
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| 78 | Start a pool. |
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| 79 | """ |
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| 80 | self.changed = Condition() |
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| 81 | self.started = 0 |
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| 82 | self.terminated = 0 |
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| 83 | self.nthreads = nthreads |
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| 84 | |
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| 85 | def acquire(self): |
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| 86 | """ |
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| 87 | Get the pool's lock. |
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| 88 | """ |
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| 89 | self.changed.acquire() |
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| 90 | |
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| 91 | def release(self): |
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| 92 | """ |
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| 93 | Release the pool's lock. |
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| 94 | """ |
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| 95 | self.changed.release() |
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| 96 | |
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| 97 | def wait(self, timeout = None): |
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| 98 | """ |
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| 99 | Wait for a pool thread to start or stop. |
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| 100 | """ |
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| 101 | self.changed.wait(timeout) |
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| 102 | |
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| 103 | def start(self): |
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| 104 | """ |
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| 105 | Called by a pool thread to report starting. |
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| 106 | """ |
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| 107 | self.changed.acquire() |
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| 108 | self.started += 1 |
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| 109 | self.changed.notifyAll() |
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| 110 | self.changed.release() |
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| 111 | |
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| 112 | def terminate(self): |
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| 113 | """ |
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| 114 | Called by a pool thread to report finishing. |
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| 115 | """ |
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| 116 | self.changed.acquire() |
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| 117 | self.terminated += 1 |
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| 118 | self.changed.notifyAll() |
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| 119 | self.changed.release() |
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| 120 | |
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| 121 | def clear(self): |
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| 122 | """ |
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| 123 | Clear all pool data. |
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| 124 | """ |
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| 125 | self.changed.acquire() |
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| 126 | self.started = 0 |
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| 127 | self.terminated =0 |
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| 128 | self.changed.notifyAll() |
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| 129 | self.changed.release() |
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| 130 | |
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| 131 | def wait_for_slot(self): |
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| 132 | """ |
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| 133 | Wait until we have a free slot to start another pooled thread |
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| 134 | """ |
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| 135 | self.acquire() |
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| 136 | while self.started - self.terminated >= self.nthreads: |
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| 137 | self.wait() |
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| 138 | self.release() |
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| 139 | |
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| 140 | def wait_for_all_done(self): |
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| 141 | """ |
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| 142 | Wait until all active threads finish (and at least one has started) |
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| 143 | """ |
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| 144 | self.acquire() |
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| 145 | while self.started == 0 or self.started > self.terminated: |
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| 146 | self.wait() |
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| 147 | self.release() |
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| 148 | |
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| 149 | class pooled_thread(Thread): |
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| 150 | """ |
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| 151 | One of a set of threads dedicated to a specific task. Uses the |
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| 152 | thread_pool class above for coordination. |
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| 153 | """ |
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| 154 | def __init__(self, group=None, target=None, name=None, args=(), |
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| 155 | kwargs={}, pdata=None, trace_file=None): |
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| 156 | Thread.__init__(self, group, target, name, args, kwargs) |
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| 157 | self.rv = None # Return value of the ops in this thread |
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| 158 | self.exception = None # Exception that terminated this thread |
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| 159 | self.target=target # Target function to run on start() |
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| 160 | self.args = args # Args to pass to target |
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| 161 | self.kwargs = kwargs # Additional kw args |
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| 162 | self.pdata = pdata # thread_pool for this class |
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| 163 | # Logger for this thread |
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| 164 | self.log = logging.getLogger("fedd.experiment_control") |
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| 165 | |
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| 166 | def run(self): |
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| 167 | """ |
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| 168 | Emulate Thread.run, except add pool data manipulation and error |
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| 169 | logging. |
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| 170 | """ |
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| 171 | if self.pdata: |
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| 172 | self.pdata.start() |
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| 173 | |
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| 174 | if self.target: |
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| 175 | try: |
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| 176 | self.rv = self.target(*self.args, **self.kwargs) |
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| 177 | except service_error, s: |
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| 178 | self.exception = s |
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| 179 | self.log.error("Thread exception: %s %s" % \ |
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| 180 | (s.code_string(), s.desc)) |
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| 181 | except: |
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| 182 | self.exception = sys.exc_info()[1] |
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| 183 | self.log.error(("Unexpected thread exception: %s" +\ |
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| 184 | "Trace %s") % (self.exception,\ |
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| 185 | traceback.format_exc())) |
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| 186 | if self.pdata: |
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| 187 | self.pdata.terminate() |
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| 188 | |
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| 189 | call_RequestAccess = service_caller('RequestAccess') |
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| 190 | call_ReleaseAccess = service_caller('ReleaseAccess') |
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| 191 | call_Ns2Split = service_caller('Ns2Split') |
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| 192 | |
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| 193 | def __init__(self, config=None, auth=None): |
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| 194 | """ |
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| 195 | Intialize the various attributes, most from the config object |
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| 196 | """ |
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| 197 | |
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| 198 | def parse_tarfile_list(tf): |
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| 199 | """ |
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| 200 | Parse a tarfile list from the configuration. This is a set of |
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| 201 | paths and tarfiles separated by spaces. |
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| 202 | """ |
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| 203 | rv = [ ] |
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| 204 | if tf is not None: |
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| 205 | tl = tf.split() |
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| 206 | while len(tl) > 1: |
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| 207 | p, t = tl[0:2] |
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| 208 | del tl[0:2] |
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| 209 | rv.append((p, t)) |
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| 210 | return rv |
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| 211 | |
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| 212 | self.thread_with_rv = experiment_control_local.pooled_thread |
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| 213 | self.thread_pool = experiment_control_local.thread_pool |
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| 214 | self.list_log = experiment_control_local.list_log |
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| 215 | |
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| 216 | self.cert_file = config.get("experiment_control", "cert_file") |
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| 217 | if self.cert_file: |
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| 218 | self.cert_pwd = config.get("experiment_control", "cert_pwd") |
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| 219 | else: |
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| 220 | self.cert_file = config.get("globals", "cert_file") |
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| 221 | self.cert_pwd = config.get("globals", "cert_pwd") |
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| 222 | |
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| 223 | self.trusted_certs = config.get("experiment_control", "trusted_certs") \ |
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| 224 | or config.get("globals", "trusted_certs") |
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| 225 | |
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| 226 | self.exp_stem = "fed-stem" |
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| 227 | self.log = logging.getLogger("fedd.experiment_control") |
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| 228 | set_log_level(config, "experiment_control", self.log) |
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| 229 | self.muxmax = 2 |
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| 230 | self.nthreads = 2 |
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| 231 | self.randomize_experiments = False |
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| 232 | |
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| 233 | self.splitter = None |
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| 234 | self.ssh_keygen = "/usr/bin/ssh-keygen" |
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| 235 | self.ssh_identity_file = None |
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| 236 | |
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| 237 | |
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| 238 | self.debug = config.getboolean("experiment_control", "create_debug") |
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| 239 | self.state_filename = config.get("experiment_control", |
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| 240 | "experiment_state") |
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| 241 | self.splitter_url = config.get("experiment_control", "splitter_uri") |
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| 242 | self.fedkit = parse_tarfile_list(\ |
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| 243 | config.get("experiment_control", "fedkit")) |
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| 244 | self.gatewaykit = parse_tarfile_list(\ |
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| 245 | config.get("experiment_control", "gatewaykit")) |
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| 246 | accessdb_file = config.get("experiment_control", "accessdb") |
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| 247 | |
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| 248 | self.ssh_pubkey_file = config.get("experiment_control", |
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| 249 | "ssh_pubkey_file") |
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| 250 | self.ssh_privkey_file = config.get("experiment_control", |
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| 251 | "ssh_privkey_file") |
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| 252 | # NB for internal master/slave ops, not experiment setup |
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| 253 | self.ssh_type = config.get("experiment_control", "sshkeytype", "rsa") |
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| 254 | |
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| 255 | self.overrides = set([]) |
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| 256 | ovr = config.get('experiment_control', 'overrides') |
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| 257 | if ovr: |
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| 258 | for o in ovr.split(","): |
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| 259 | o = o.strip() |
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| 260 | if o.startswith('fedid:'): o = o[len('fedid:'):] |
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| 261 | self.overrides.add(fedid(hexstr=o)) |
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| 262 | |
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| 263 | self.state = { } |
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| 264 | self.state_lock = RLock() |
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| 265 | self.tclsh = "/usr/local/bin/otclsh" |
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| 266 | self.tcl_splitter = config.get("splitter", "tcl_splitter") or \ |
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| 267 | config.get("experiment_control", "tcl_splitter", |
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| 268 | "/usr/testbed/lib/ns2ir/parse.tcl") |
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| 269 | mapdb_file = config.get("experiment_control", "mapdb") |
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| 270 | self.trace_file = sys.stderr |
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| 271 | |
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| 272 | self.def_expstart = \ |
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| 273 | "sudo -H /bin/sh /usr/local/federation/bin/federate.sh >& " +\ |
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| 274 | "/tmp/federate"; |
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| 275 | self.def_mexpstart = "sudo -H /usr/local/federation/bin/make_hosts " +\ |
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| 276 | "FEDDIR/hosts"; |
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| 277 | self.def_gwstart = \ |
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| 278 | "sudo -H /usr/local/federation/bin/fed-tun.pl -f GWCONF>& " +\ |
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| 279 | "/tmp/bridge.log"; |
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| 280 | self.def_mgwstart = \ |
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| 281 | "sudo -H /usr/local/federation/bin/fed-tun.pl -f GWCONF >& " +\ |
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| 282 | "/tmp/bridge.log"; |
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| 283 | self.def_gwimage = "FBSD61-TUNNEL2"; |
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| 284 | self.def_gwtype = "pc"; |
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| 285 | self.local_access = { } |
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| 286 | |
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| 287 | if auth: |
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| 288 | self.auth = auth |
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| 289 | else: |
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| 290 | self.log.error(\ |
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| 291 | "[access]: No authorizer initialized, creating local one.") |
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| 292 | auth = authorizer() |
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| 293 | |
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| 294 | |
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| 295 | if self.ssh_pubkey_file: |
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| 296 | try: |
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| 297 | f = open(self.ssh_pubkey_file, 'r') |
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| 298 | self.ssh_pubkey = f.read() |
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| 299 | f.close() |
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| 300 | except IOError: |
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| 301 | raise service_error(service_error.internal, |
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| 302 | "Cannot read sshpubkey") |
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| 303 | else: |
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| 304 | raise service_error(service_error.internal, |
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| 305 | "No SSH public key file?") |
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| 306 | |
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| 307 | if not self.ssh_privkey_file: |
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| 308 | raise service_error(service_error.internal, |
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| 309 | "No SSH public key file?") |
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| 310 | |
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| 311 | |
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| 312 | if mapdb_file: |
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| 313 | self.read_mapdb(mapdb_file) |
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| 314 | else: |
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| 315 | self.log.warn("[experiment_control] No testbed map, using defaults") |
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| 316 | self.tbmap = { |
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| 317 | 'deter':'https://users.isi.deterlab.net:23235', |
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| 318 | 'emulab':'https://users.isi.deterlab.net:23236', |
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| 319 | 'ucb':'https://users.isi.deterlab.net:23237', |
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| 320 | } |
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| 321 | |
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| 322 | if accessdb_file: |
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| 323 | self.read_accessdb(accessdb_file) |
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| 324 | else: |
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| 325 | raise service_error(service_error.internal, |
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| 326 | "No accessdb specified in config") |
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| 327 | |
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| 328 | # Grab saved state. OK to do this w/o locking because it's read only |
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| 329 | # and only one thread should be in existence that can see self.state at |
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| 330 | # this point. |
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| 331 | if self.state_filename: |
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| 332 | self.read_state() |
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| 333 | |
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| 334 | # Dispatch tables |
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| 335 | self.soap_services = {\ |
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| 336 | 'Create': soap_handler('Create', self.create_experiment), |
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| 337 | 'Vtopo': soap_handler('Vtopo', self.get_vtopo), |
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| 338 | 'Vis': soap_handler('Vis', self.get_vis), |
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| 339 | 'Info': soap_handler('Info', self.get_info), |
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| 340 | 'MultiInfo': soap_handler('MultiInfo', self.get_multi_info), |
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| 341 | 'Terminate': soap_handler('Terminate', |
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| 342 | self.terminate_experiment), |
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| 343 | } |
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| 344 | |
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| 345 | self.xmlrpc_services = {\ |
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| 346 | 'Create': xmlrpc_handler('Create', self.create_experiment), |
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| 347 | 'Vtopo': xmlrpc_handler('Vtopo', self.get_vtopo), |
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| 348 | 'Vis': xmlrpc_handler('Vis', self.get_vis), |
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| 349 | 'Info': xmlrpc_handler('Info', self.get_info), |
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| 350 | 'MultiInfo': xmlrpc_handler('MultiInfo', self.get_multi_info), |
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| 351 | 'Terminate': xmlrpc_handler('Terminate', |
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| 352 | self.terminate_experiment), |
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| 353 | } |
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| 354 | |
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| 355 | def copy_file(self, src, dest, size=1024): |
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| 356 | """ |
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| 357 | Exceedingly simple file copy. |
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| 358 | """ |
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| 359 | s = open(src,'r') |
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| 360 | d = open(dest, 'w') |
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| 361 | |
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| 362 | buf = "x" |
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| 363 | while buf != "": |
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| 364 | buf = s.read(size) |
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| 365 | d.write(buf) |
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| 366 | s.close() |
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| 367 | d.close() |
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| 368 | |
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| 369 | # Call while holding self.state_lock |
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| 370 | def write_state(self): |
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| 371 | """ |
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| 372 | Write a new copy of experiment state after copying the existing state |
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| 373 | to a backup. |
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| 374 | |
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| 375 | State format is a simple pickling of the state dictionary. |
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| 376 | """ |
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| 377 | if os.access(self.state_filename, os.W_OK): |
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| 378 | self.copy_file(self.state_filename, \ |
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| 379 | "%s.bak" % self.state_filename) |
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| 380 | try: |
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| 381 | f = open(self.state_filename, 'w') |
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| 382 | pickle.dump(self.state, f) |
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| 383 | except IOError, e: |
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| 384 | self.log.error("Can't write file %s: %s" % \ |
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| 385 | (self.state_filename, e)) |
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| 386 | except pickle.PicklingError, e: |
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| 387 | self.log.error("Pickling problem: %s" % e) |
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| 388 | except TypeError, e: |
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| 389 | self.log.error("Pickling problem (TypeError): %s" % e) |
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| 390 | |
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| 391 | # Call while holding self.state_lock |
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| 392 | def read_state(self): |
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| 393 | """ |
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| 394 | Read a new copy of experiment state. Old state is overwritten. |
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| 395 | |
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| 396 | State format is a simple pickling of the state dictionary. |
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| 397 | """ |
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| 398 | try: |
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| 399 | f = open(self.state_filename, "r") |
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| 400 | self.state = pickle.load(f) |
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| 401 | self.log.debug("[read_state]: Read state from %s" % \ |
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| 402 | self.state_filename) |
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| 403 | except IOError, e: |
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| 404 | self.log.warning("[read_state]: No saved state: Can't open %s: %s"\ |
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| 405 | % (self.state_filename, e)) |
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| 406 | except pickle.UnpicklingError, e: |
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| 407 | self.log.warning(("[read_state]: No saved state: " + \ |
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| 408 | "Unpickling failed: %s") % e) |
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| 409 | |
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| 410 | for k in self.state.keys(): |
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| 411 | try: |
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| 412 | # This list should only have one element in it, but phrasing it |
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| 413 | # as a for loop doesn't cost much, really. We have to find the |
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| 414 | # fedid elements anyway. |
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| 415 | for eid in [ f['fedid'] \ |
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| 416 | for f in self.state[k]['experimentID']\ |
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| 417 | if f.has_key('fedid') ]: |
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| 418 | self.auth.set_attribute(self.state[k]['owner'], eid) |
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| 419 | # allow overrides to control experiments as well |
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| 420 | for o in self.overrides: |
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| 421 | self.auth.set_attribute(o, eid) |
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| 422 | except KeyError, e: |
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| 423 | self.log.warning("[read_state]: State ownership or identity " +\ |
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| 424 | "misformatted in %s: %s" % (self.state_filename, e)) |
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| 425 | |
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| 426 | |
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| 427 | def read_accessdb(self, accessdb_file): |
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| 428 | """ |
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| 429 | Read the mapping from fedids that can create experiments to their name |
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| 430 | in the 3-level access namespace. All will be asserted from this |
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| 431 | testbed and can include the local username and porject that will be |
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| 432 | asserted on their behalf by this fedd. Each fedid is also added to the |
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| 433 | authorization system with the "create" attribute. |
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| 434 | """ |
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| 435 | self.accessdb = {} |
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| 436 | # These are the regexps for parsing the db |
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| 437 | name_expr = "[" + string.ascii_letters + string.digits + "\.\-]+" |
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| 438 | project_line = re.compile("^\s*fedid:([" + string.hexdigits + "]+)"+ \ |
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| 439 | "\s*->\(\s*("+name_expr+")\s*,\s*("+name_expr+")\s*\)\s*$") |
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| 440 | user_line = re.compile("^\s*fedid:([" + string.hexdigits + "]+)"+ \ |
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| 441 | "\s*->\s*(" + name_expr + ")\s*$") |
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| 442 | lineno = 0 |
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| 443 | |
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| 444 | # Parse the mappings and store in self.authdb, a dict of |
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| 445 | # fedid -> (proj, user) |
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| 446 | try: |
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| 447 | f = open(accessdb_file, "r") |
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| 448 | for line in f: |
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| 449 | lineno += 1 |
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| 450 | line = line.strip() |
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| 451 | if len(line) == 0 or line.startswith('#'): |
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| 452 | continue |
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| 453 | m = project_line.match(line) |
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| 454 | if m: |
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| 455 | fid = fedid(hexstr=m.group(1)) |
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| 456 | project, user = m.group(2,3) |
|---|
| 457 | if not self.accessdb.has_key(fid): |
|---|
| 458 | self.accessdb[fid] = [] |
|---|
| 459 | self.accessdb[fid].append((project, user)) |
|---|
| 460 | continue |
|---|
| 461 | |
|---|
| 462 | m = user_line.match(line) |
|---|
| 463 | if m: |
|---|
| 464 | fid = fedid(hexstr=m.group(1)) |
|---|
| 465 | project = None |
|---|
| 466 | user = m.group(2) |
|---|
| 467 | if not self.accessdb.has_key(fid): |
|---|
| 468 | self.accessdb[fid] = [] |
|---|
| 469 | self.accessdb[fid].append((project, user)) |
|---|
| 470 | continue |
|---|
| 471 | self.log.warn("[experiment_control] Error parsing access " +\ |
|---|
| 472 | "db %s at line %d" % (accessdb_file, lineno)) |
|---|
| 473 | except IOError: |
|---|
| 474 | raise service_error(service_error.internal, |
|---|
| 475 | "Error opening/reading %s as experiment " +\ |
|---|
| 476 | "control accessdb" % accessdb_file) |
|---|
| 477 | f.close() |
|---|
| 478 | |
|---|
| 479 | # Initialize the authorization attributes |
|---|
| 480 | for fid in self.accessdb.keys(): |
|---|
| 481 | self.auth.set_attribute(fid, 'create') |
|---|
| 482 | |
|---|
| 483 | def read_mapdb(self, file): |
|---|
| 484 | """ |
|---|
| 485 | Read a simple colon separated list of mappings for the |
|---|
| 486 | label-to-testbed-URL mappings. Clears or creates self.tbmap. |
|---|
| 487 | """ |
|---|
| 488 | |
|---|
| 489 | self.tbmap = { } |
|---|
| 490 | lineno =0 |
|---|
| 491 | try: |
|---|
| 492 | f = open(file, "r") |
|---|
| 493 | for line in f: |
|---|
| 494 | lineno += 1 |
|---|
| 495 | line = line.strip() |
|---|
| 496 | if line.startswith('#') or len(line) == 0: |
|---|
| 497 | continue |
|---|
| 498 | try: |
|---|
| 499 | label, url = line.split(':', 1) |
|---|
| 500 | self.tbmap[label] = url |
|---|
| 501 | except ValueError, e: |
|---|
| 502 | self.log.warn("[read_mapdb] Ignored bad line (%d) in " +\ |
|---|
| 503 | "map db: %s %s" % (lineno, line, e)) |
|---|
| 504 | except IOError, e: |
|---|
| 505 | self.log.warning("[read_mapdb]: No saved map database: Can't " +\ |
|---|
| 506 | "open %s: %s" % (file, e)) |
|---|
| 507 | f.close() |
|---|
| 508 | |
|---|
| 509 | class emulab_segment: |
|---|
| 510 | def __init__(self, log=None, keyfile=None, debug=False): |
|---|
| 511 | self.log = log or logging.getLogger(\ |
|---|
| 512 | 'fedd.experiment_control.emulab_segment') |
|---|
| 513 | self.ssh_privkey_file = keyfile |
|---|
| 514 | self.debug = debug |
|---|
| 515 | self.ssh_exec="/usr/bin/ssh" |
|---|
| 516 | self.scp_exec = "/usr/bin/scp" |
|---|
| 517 | self.ssh_cmd_timeout = experiment_control_local.ssh_cmd_timeout |
|---|
| 518 | |
|---|
| 519 | def scp_file(self, file, user, host, dest=""): |
|---|
| 520 | """ |
|---|
| 521 | scp a file to the remote host. If debug is set the action is only |
|---|
| 522 | logged. |
|---|
| 523 | """ |
|---|
| 524 | |
|---|
| 525 | scp_cmd = [self.scp_exec, '-o', 'IdentitiesOnly yes', |
|---|
| 526 | '-o', 'StrictHostKeyChecking yes', '-i', |
|---|
| 527 | self.ssh_privkey_file, file, |
|---|
| 528 | "%s@%s:%s" % (user, host, dest)] |
|---|
| 529 | rv = 0 |
|---|
| 530 | |
|---|
| 531 | try: |
|---|
| 532 | dnull = open("/dev/null", "w") |
|---|
| 533 | except IOError: |
|---|
| 534 | self.log.debug("[ssh_file]: failed to open " + \ |
|---|
| 535 | "/dev/null for redirect") |
|---|
| 536 | dnull = Null |
|---|
| 537 | |
|---|
| 538 | self.log.debug("[scp_file]: %s" % " ".join(scp_cmd)) |
|---|
| 539 | if not self.debug: |
|---|
| 540 | rv = call(scp_cmd, stdout=dnull, stderr=dnull, close_fds=True, |
|---|
| 541 | close_fds=True) |
|---|
| 542 | |
|---|
| 543 | return rv == 0 |
|---|
| 544 | |
|---|
| 545 | def ssh_cmd(self, user, host, cmd, wname=None, timeout=None): |
|---|
| 546 | """ |
|---|
| 547 | Run a remote command on host as user. If debug is set, the action |
|---|
| 548 | is only logged. Commands are run without stdin, to avoid stray |
|---|
| 549 | SIGTTINs. |
|---|
| 550 | """ |
|---|
| 551 | sh_str = ("%s -n -o 'IdentitiesOnly yes' -o " + \ |
|---|
| 552 | "'StrictHostKeyChecking yes' -i %s %s@%s %s") % \ |
|---|
| 553 | (self.ssh_exec, self.ssh_privkey_file, |
|---|
| 554 | user, host, cmd) |
|---|
| 555 | |
|---|
| 556 | try: |
|---|
| 557 | dnull = open("/dev/null", "w") |
|---|
| 558 | except IOError: |
|---|
| 559 | self.log.debug("[ssh_cmd]: failed to open /dev/null " + \ |
|---|
| 560 | "for redirect") |
|---|
| 561 | dnull = Null |
|---|
| 562 | |
|---|
| 563 | self.log.debug("[ssh_cmd]: %s" % sh_str) |
|---|
| 564 | if not self.debug: |
|---|
| 565 | if dnull: |
|---|
| 566 | sub = Popen(sh_str, shell=True, stdout=dnull, stderr=dnull, |
|---|
| 567 | close_fds=True) |
|---|
| 568 | else: |
|---|
| 569 | sub = Popen(sh_str, shell=True, |
|---|
| 570 | close_fds=True) |
|---|
| 571 | if timeout: |
|---|
| 572 | i = 0 |
|---|
| 573 | rv = sub.poll() |
|---|
| 574 | while i < timeout: |
|---|
| 575 | if rv is not None: break |
|---|
| 576 | else: |
|---|
| 577 | time.sleep(1) |
|---|
| 578 | rv = sub.poll() |
|---|
| 579 | i += 1 |
|---|
| 580 | else: |
|---|
| 581 | self.log.debug("Process exceeded runtime: %s" % sh_str) |
|---|
| 582 | os.kill(sub.pid, signal.SIGKILL) |
|---|
| 583 | raise self.ssh_cmd_timeout(); |
|---|
| 584 | return rv == 0 |
|---|
| 585 | else: |
|---|
| 586 | return sub.wait() == 0 |
|---|
| 587 | else: |
|---|
| 588 | if timeout == 0: |
|---|
| 589 | self.log.debug("debug timeout raised on %s " % sh_str) |
|---|
| 590 | raise self.ssh_cmd_timeout() |
|---|
| 591 | else: |
|---|
| 592 | return True |
|---|
| 593 | |
|---|
| 594 | class start_segment(emulab_segment): |
|---|
| 595 | def __init__(self, log=None, keyfile=None, debug=False): |
|---|
| 596 | experiment_control_local.emulab_segment.__init__(self, |
|---|
| 597 | log=log, keyfile=keyfile, debug=debug) |
|---|
| 598 | |
|---|
| 599 | def create_config_tree(self, src_dir, dest_dir, script): |
|---|
| 600 | """ |
|---|
| 601 | Append commands to script that will create the directory hierarchy |
|---|
| 602 | on the remote federant. |
|---|
| 603 | """ |
|---|
| 604 | |
|---|
| 605 | if os.path.isdir(src_dir): |
|---|
| 606 | print >>script, "mkdir -p %s" % dest_dir |
|---|
| 607 | print >>script, "chmod 770 %s" % dest_dir |
|---|
| 608 | |
|---|
| 609 | for f in os.listdir(src_dir): |
|---|
| 610 | if os.path.isdir(f): |
|---|
| 611 | self.create_config_tree("%s/%s" % (src_dir, f), |
|---|
| 612 | "%s/%s" % (dest_dir, f), script) |
|---|
| 613 | else: |
|---|
| 614 | self.log.debug("[create_config_tree]: Not a directory: %s" \ |
|---|
| 615 | % src_dir) |
|---|
| 616 | |
|---|
| 617 | def ship_configs(self, host, user, src_dir, dest_dir): |
|---|
| 618 | """ |
|---|
| 619 | Copy federant-specific configuration files to the federant. |
|---|
| 620 | """ |
|---|
| 621 | for f in os.listdir(src_dir): |
|---|
| 622 | if os.path.isdir(f): |
|---|
| 623 | if not self.ship_configs(host, user, "%s/%s" % (src_dir, f), |
|---|
| 624 | "%s/%s" % (dest_dir, f)): |
|---|
| 625 | return False |
|---|
| 626 | else: |
|---|
| 627 | if not self.scp_file("%s/%s" % (src_dir, f), |
|---|
| 628 | user, host, dest_dir): |
|---|
| 629 | return False |
|---|
| 630 | return True |
|---|
| 631 | |
|---|
| 632 | def get_state(self, user, host, tb, pid, eid): |
|---|
| 633 | # command to test experiment state |
|---|
| 634 | expinfo_exec = "/usr/testbed/bin/expinfo" |
|---|
| 635 | # Regular expressions to parse the expinfo response |
|---|
| 636 | state_re = re.compile("State:\s+(\w+)") |
|---|
| 637 | no_exp_re = re.compile("^No\s+such\s+experiment") |
|---|
| 638 | swapping_re = re.compile("^No\s+information\s+available.") |
|---|
| 639 | state = None # Experiment state parsed from expinfo |
|---|
| 640 | # The expinfo ssh command. Note the identity restriction to use |
|---|
| 641 | # only the identity provided in the pubkey given. |
|---|
| 642 | cmd = [self.ssh_exec, '-o', 'IdentitiesOnly yes', '-o', |
|---|
| 643 | 'StrictHostKeyChecking yes', '-i', |
|---|
| 644 | self.ssh_privkey_file, "%s@%s" % (user, host), |
|---|
| 645 | expinfo_exec, pid, eid] |
|---|
| 646 | |
|---|
| 647 | dev_null = None |
|---|
| 648 | try: |
|---|
| 649 | dev_null = open("/dev/null", "a") |
|---|
| 650 | except IOError, e: |
|---|
| 651 | self.log.error("[get_state]: can't open /dev/null: %s" %e) |
|---|
| 652 | |
|---|
| 653 | if self.debug: |
|---|
| 654 | state = 'swapped' |
|---|
| 655 | rv = 0 |
|---|
| 656 | else: |
|---|
| 657 | status = Popen(cmd, stdout=PIPE, stderr=dev_null, |
|---|
| 658 | close_fds=True) |
|---|
| 659 | for line in status.stdout: |
|---|
| 660 | m = state_re.match(line) |
|---|
| 661 | if m: state = m.group(1) |
|---|
| 662 | else: |
|---|
| 663 | for reg, st in ((no_exp_re, "none"), |
|---|
| 664 | (swapping_re, "swapping")): |
|---|
| 665 | m = reg.match(line) |
|---|
| 666 | if m: state = st |
|---|
| 667 | rv = status.wait() |
|---|
| 668 | |
|---|
| 669 | # If the experiment is not present the subcommand returns a |
|---|
| 670 | # non-zero return value. If we successfully parsed a "none" |
|---|
| 671 | # outcome, ignore the return code. |
|---|
| 672 | if rv != 0 and state != 'none': |
|---|
| 673 | raise service_error(service_error.internal, |
|---|
| 674 | "Cannot get status of segment %s:%s/%s" % \ |
|---|
| 675 | (tb, pid, eid)) |
|---|
| 676 | elif state not in ('active', 'swapped', 'swapping', 'none'): |
|---|
| 677 | raise service_error(service_error.internal, |
|---|
| 678 | "Cannot get status of segment %s:%s/%s" % \ |
|---|
| 679 | (tb, pid, eid)) |
|---|
| 680 | else: return state |
|---|
| 681 | |
|---|
| 682 | |
|---|
| 683 | def __call__(self, tb, eid, tbparams, tmpdir, timeout=0): |
|---|
| 684 | """ |
|---|
| 685 | Start a sub-experiment on a federant. |
|---|
| 686 | |
|---|
| 687 | Get the current state, modify or create as appropriate, ship data |
|---|
| 688 | and configs and start the experiment. There are small ordering |
|---|
| 689 | differences based on the initial state of the sub-experiment. |
|---|
| 690 | """ |
|---|
| 691 | # ops node in the federant |
|---|
| 692 | host = "%s%s" % (tbparams[tb]['host'], tbparams[tb]['domain']) |
|---|
| 693 | user = tbparams[tb]['user'] # federant user |
|---|
| 694 | pid = tbparams[tb]['project'] # federant project |
|---|
| 695 | # XXX |
|---|
| 696 | base_confs = ( "hosts",) |
|---|
| 697 | tclfile = "%s.%s.tcl" % (eid, tb) # sub-experiment description |
|---|
| 698 | # Configuration directories on the remote machine |
|---|
| 699 | proj_dir = "/proj/%s/exp/%s/tmp" % (pid, eid) |
|---|
| 700 | tarfiles_dir = "/proj/%s/tarfiles/%s" % (pid, eid) |
|---|
| 701 | rpms_dir = "/proj/%s/rpms/%s" % (pid, eid) |
|---|
| 702 | |
|---|
| 703 | state = self.get_state(user, host, tb, pid, eid) |
|---|
| 704 | |
|---|
| 705 | self.log.debug("[start_segment]: %s: %s" % (tb, state)) |
|---|
| 706 | self.log.info("[start_segment]:transferring experiment to %s" % tb) |
|---|
| 707 | |
|---|
| 708 | if not self.scp_file("%s/%s/%s" % \ |
|---|
| 709 | (tmpdir, tb, tclfile), user, host): |
|---|
| 710 | return False |
|---|
| 711 | |
|---|
| 712 | if state == 'none': |
|---|
| 713 | # Create a null copy of the experiment so that we capture any |
|---|
| 714 | # logs there if the modify fails. Emulab software discards the |
|---|
| 715 | # logs from a failed startexp |
|---|
| 716 | if not self.scp_file("%s/null.tcl" % tmpdir, user, host): |
|---|
| 717 | return False |
|---|
| 718 | self.log.info("[start_segment]: Creating %s on %s" % (eid, tb)) |
|---|
| 719 | timedout = False |
|---|
| 720 | try: |
|---|
| 721 | if not self.ssh_cmd(user, host, |
|---|
| 722 | ("/usr/testbed/bin/startexp -i -f -w -p %s " + |
|---|
| 723 | "-e %s null.tcl") % (pid, eid), "startexp", |
|---|
| 724 | timeout=60 * 10): |
|---|
| 725 | return False |
|---|
| 726 | except self.ssh_cmd_timeout: |
|---|
| 727 | timedout = True |
|---|
| 728 | |
|---|
| 729 | if timedout: |
|---|
| 730 | state = self.get_state(user, host, tb, pid, eid) |
|---|
| 731 | if state != "swapped": |
|---|
| 732 | return False |
|---|
| 733 | |
|---|
| 734 | |
|---|
| 735 | # Open up a temporary file to contain a script for setting up the |
|---|
| 736 | # filespace for the new experiment. |
|---|
| 737 | self.log.info("[start_segment]: creating script file") |
|---|
| 738 | try: |
|---|
| 739 | sf, scriptname = tempfile.mkstemp() |
|---|
| 740 | scriptfile = os.fdopen(sf, 'w') |
|---|
| 741 | except IOError: |
|---|
| 742 | return False |
|---|
| 743 | |
|---|
| 744 | scriptbase = os.path.basename(scriptname) |
|---|
| 745 | |
|---|
| 746 | # Script the filesystem changes |
|---|
| 747 | print >>scriptfile, "/bin/rm -rf %s" % proj_dir |
|---|
| 748 | # Clear and create the tarfiles and rpm directories |
|---|
| 749 | for d in (tarfiles_dir, rpms_dir): |
|---|
| 750 | print >>scriptfile, "/bin/rm -rf %s/*" % d |
|---|
| 751 | print >>scriptfile, "mkdir -p %s" % d |
|---|
| 752 | print >>scriptfile, 'mkdir -p %s' % proj_dir |
|---|
| 753 | self.create_config_tree("%s/%s" % (tmpdir, tb), |
|---|
| 754 | proj_dir, scriptfile) |
|---|
| 755 | if os.path.isdir("%s/tarfiles" % tmpdir): |
|---|
| 756 | self.create_config_tree("%s/tarfiles" % tmpdir, tarfiles_dir, |
|---|
| 757 | scriptfile) |
|---|
| 758 | if os.path.isdir("%s/rpms" % tmpdir): |
|---|
| 759 | self.create_config_tree("%s/rpms" % tmpdir, rpms_dir, |
|---|
| 760 | scriptfile) |
|---|
| 761 | print >>scriptfile, "rm -f %s" % scriptbase |
|---|
| 762 | scriptfile.close() |
|---|
| 763 | |
|---|
| 764 | # Move the script to the remote machine |
|---|
| 765 | # XXX: could collide tempfile names on the remote host |
|---|
| 766 | if self.scp_file(scriptname, user, host, scriptbase): |
|---|
| 767 | os.remove(scriptname) |
|---|
| 768 | else: |
|---|
| 769 | return False |
|---|
| 770 | |
|---|
| 771 | # Execute the script (and the script's last line deletes it) |
|---|
| 772 | if not self.ssh_cmd(user, host, "sh -x %s" % scriptbase): |
|---|
| 773 | return False |
|---|
| 774 | |
|---|
| 775 | for f in base_confs: |
|---|
| 776 | if not self.scp_file("%s/%s" % (tmpdir, f), user, host, |
|---|
| 777 | "%s/%s" % (proj_dir, f)): |
|---|
| 778 | return False |
|---|
| 779 | if not self.ship_configs(host, user, "%s/%s" % (tmpdir, tb), |
|---|
| 780 | proj_dir): |
|---|
| 781 | return False |
|---|
| 782 | if os.path.isdir("%s/tarfiles" % tmpdir): |
|---|
| 783 | if not self.ship_configs(host, user, |
|---|
| 784 | "%s/tarfiles" % tmpdir, tarfiles_dir): |
|---|
| 785 | return False |
|---|
| 786 | if os.path.isdir("%s/rpms" % tmpdir): |
|---|
| 787 | if not self.ship_configs(host, user, |
|---|
| 788 | "%s/rpms" % tmpdir, tarfiles_dir): |
|---|
| 789 | return False |
|---|
| 790 | # Stage the new configuration (active experiments will stay swapped |
|---|
| 791 | # in now) |
|---|
| 792 | self.log.info("[start_segment]: Modifying %s on %s" % (eid, tb)) |
|---|
| 793 | try: |
|---|
| 794 | if not self.ssh_cmd(user, host, |
|---|
| 795 | "/usr/testbed/bin/modexp -r -s -w %s %s %s" % \ |
|---|
| 796 | (pid, eid, tclfile), |
|---|
| 797 | "modexp", timeout= 60 * 10): |
|---|
| 798 | return False |
|---|
| 799 | except self.ssh_cmd_timeout: |
|---|
| 800 | self.log.error("Modify command failed to complete in time") |
|---|
| 801 | # There's really no way to see if this succeeded or failed, so |
|---|
| 802 | # if it hangs, assume the worst. |
|---|
| 803 | return False |
|---|
| 804 | # Active experiments are still swapped, this swaps the others in. |
|---|
| 805 | if state != 'active': |
|---|
| 806 | self.log.info("[start_segment]: Swapping %s in on %s" % \ |
|---|
| 807 | (eid, tb)) |
|---|
| 808 | timedout = False |
|---|
| 809 | try: |
|---|
| 810 | if not self.ssh_cmd(user, host, |
|---|
| 811 | "/usr/testbed/bin/swapexp -w %s %s in" % (pid, eid), |
|---|
| 812 | "swapexp", timeout=10*60): |
|---|
| 813 | return False |
|---|
| 814 | except self.ssh_cmd_timeout: |
|---|
| 815 | timedout = True |
|---|
| 816 | |
|---|
| 817 | # If the command was terminated, but completed successfully, |
|---|
| 818 | # report success. |
|---|
| 819 | if timedout: |
|---|
| 820 | self.log.debug("[start_segment]: swapin timed out " +\ |
|---|
| 821 | "checking state") |
|---|
| 822 | state = self.get_state(user, host, tb, pid, eid) |
|---|
| 823 | self.log.debug("[start_segment]: state is %s" % state) |
|---|
| 824 | return state == 'active' |
|---|
| 825 | # Everything has gone OK. |
|---|
| 826 | return True |
|---|
| 827 | |
|---|
| 828 | class stop_segment(emulab_segment): |
|---|
| 829 | def __init__(self, log=None, keyfile=None, debug=False): |
|---|
| 830 | experiment_control_local.emulab_segment.__init__(self, |
|---|
| 831 | log=log, keyfile=keyfile, debug=debug) |
|---|
| 832 | |
|---|
| 833 | def __call__(self, tb, eid, tbparams): |
|---|
| 834 | """ |
|---|
| 835 | Stop a sub experiment by calling swapexp on the federant |
|---|
| 836 | """ |
|---|
| 837 | user = tbparams[tb]['user'] |
|---|
| 838 | host = "%s%s" % (tbparams[tb]['host'], tbparams[tb]['domain']) |
|---|
| 839 | pid = tbparams[tb]['project'] |
|---|
| 840 | |
|---|
| 841 | self.log.info("[stop_segment]: Stopping %s on %s" % (eid, tb)) |
|---|
| 842 | rv = False |
|---|
| 843 | try: |
|---|
| 844 | # Clean out tar files: we've gone over quota in the past |
|---|
| 845 | self.ssh_cmd(user, host, "rm -rf /proj/%s/rpms/%s" % (pid, eid)) |
|---|
| 846 | self.ssh_cmd(user, host, "rm -rf /proj/%s/tarfiles/%s" % \ |
|---|
| 847 | (pid, eid)) |
|---|
| 848 | rv = self.ssh_cmd(user, host, |
|---|
| 849 | "/usr/testbed/bin/swapexp -w %s %s out" % (pid, eid)) |
|---|
| 850 | except self.ssh_cmd_timeout: |
|---|
| 851 | rv = False |
|---|
| 852 | return rv |
|---|
| 853 | |
|---|
| 854 | |
|---|
| 855 | def generate_ssh_keys(self, dest, type="rsa" ): |
|---|
| 856 | """ |
|---|
| 857 | Generate a set of keys for the gateways to use to talk. |
|---|
| 858 | |
|---|
| 859 | Keys are of type type and are stored in the required dest file. |
|---|
| 860 | """ |
|---|
| 861 | valid_types = ("rsa", "dsa") |
|---|
| 862 | t = type.lower(); |
|---|
| 863 | if t not in valid_types: raise ValueError |
|---|
| 864 | cmd = [self.ssh_keygen, '-t', t, '-N', '', '-f', dest] |
|---|
| 865 | |
|---|
| 866 | try: |
|---|
| 867 | trace = open("/dev/null", "w") |
|---|
| 868 | except IOError: |
|---|
| 869 | raise service_error(service_error.internal, |
|---|
| 870 | "Cannot open /dev/null??"); |
|---|
| 871 | |
|---|
| 872 | # May raise CalledProcessError |
|---|
| 873 | self.log.debug("[generate_ssh_keys]: %s" % " ".join(cmd)) |
|---|
| 874 | rv = call(cmd, stdout=trace, stderr=trace, close_fds=True) |
|---|
| 875 | if rv != 0: |
|---|
| 876 | raise service_error(service_error.internal, |
|---|
| 877 | "Cannot generate nonce ssh keys. %s return code %d" \ |
|---|
| 878 | % (self.ssh_keygen, rv)) |
|---|
| 879 | |
|---|
| 880 | def gentopo(self, str): |
|---|
| 881 | """ |
|---|
| 882 | Generate the topology dtat structure from the splitter's XML |
|---|
| 883 | representation of it. |
|---|
| 884 | |
|---|
| 885 | The topology XML looks like: |
|---|
| 886 | <experiment> |
|---|
| 887 | <nodes> |
|---|
| 888 | <node><vname></vname><ips>ip1:ip2</ips></node> |
|---|
| 889 | </nodes> |
|---|
| 890 | <lans> |
|---|
| 891 | <lan> |
|---|
| 892 | <vname></vname><vnode></vnode><ip></ip> |
|---|
| 893 | <bandwidth></bandwidth><member>node:port</member> |
|---|
| 894 | </lan> |
|---|
| 895 | </lans> |
|---|
| 896 | """ |
|---|
| 897 | class topo_parse: |
|---|
| 898 | """ |
|---|
| 899 | Parse the topology XML and create the dats structure. |
|---|
| 900 | """ |
|---|
| 901 | def __init__(self): |
|---|
| 902 | # Typing of the subelements for data conversion |
|---|
| 903 | self.str_subelements = ('vname', 'vnode', 'ips', 'ip', 'member') |
|---|
| 904 | self.int_subelements = ( 'bandwidth',) |
|---|
| 905 | self.float_subelements = ( 'delay',) |
|---|
| 906 | # The final data structure |
|---|
| 907 | self.nodes = [ ] |
|---|
| 908 | self.lans = [ ] |
|---|
| 909 | self.topo = { \ |
|---|
| 910 | 'node': self.nodes,\ |
|---|
| 911 | 'lan' : self.lans,\ |
|---|
| 912 | } |
|---|
| 913 | self.element = { } # Current element being created |
|---|
| 914 | self.chars = "" # Last text seen |
|---|
| 915 | |
|---|
| 916 | def end_element(self, name): |
|---|
| 917 | # After each sub element the contents is added to the current |
|---|
| 918 | # element or to the appropriate list. |
|---|
| 919 | if name == 'node': |
|---|
| 920 | self.nodes.append(self.element) |
|---|
| 921 | self.element = { } |
|---|
| 922 | elif name == 'lan': |
|---|
| 923 | self.lans.append(self.element) |
|---|
| 924 | self.element = { } |
|---|
| 925 | elif name in self.str_subelements: |
|---|
| 926 | self.element[name] = self.chars |
|---|
| 927 | self.chars = "" |
|---|
| 928 | elif name in self.int_subelements: |
|---|
| 929 | self.element[name] = int(self.chars) |
|---|
| 930 | self.chars = "" |
|---|
| 931 | elif name in self.float_subelements: |
|---|
| 932 | self.element[name] = float(self.chars) |
|---|
| 933 | self.chars = "" |
|---|
| 934 | |
|---|
| 935 | def found_chars(self, data): |
|---|
| 936 | self.chars += data.rstrip() |
|---|
| 937 | |
|---|
| 938 | |
|---|
| 939 | tp = topo_parse(); |
|---|
| 940 | parser = xml.parsers.expat.ParserCreate() |
|---|
| 941 | parser.EndElementHandler = tp.end_element |
|---|
| 942 | parser.CharacterDataHandler = tp.found_chars |
|---|
| 943 | |
|---|
| 944 | parser.Parse(str) |
|---|
| 945 | |
|---|
| 946 | return tp.topo |
|---|
| 947 | |
|---|
| 948 | |
|---|
| 949 | def genviz(self, topo): |
|---|
| 950 | """ |
|---|
| 951 | Generate the visualization the virtual topology |
|---|
| 952 | """ |
|---|
| 953 | |
|---|
| 954 | neato = "/usr/local/bin/neato" |
|---|
| 955 | # These are used to parse neato output and to create the visualization |
|---|
| 956 | # file. |
|---|
| 957 | vis_re = re.compile('^\s*"?([\w\-]+)"?\s+\[.*pos="(\d+),(\d+)"') |
|---|
| 958 | vis_fmt = "<node><name>%s</name><x>%s</x><y>%s</y><type>" + \ |
|---|
| 959 | "%s</type></node>" |
|---|
| 960 | |
|---|
| 961 | try: |
|---|
| 962 | # Node names |
|---|
| 963 | nodes = [ n['vname'] for n in topo['node'] ] |
|---|
| 964 | topo_lans = topo['lan'] |
|---|
| 965 | except KeyError: |
|---|
| 966 | raise service_error(service_error.internal, "Bad topology") |
|---|
| 967 | |
|---|
| 968 | lans = { } |
|---|
| 969 | links = { } |
|---|
| 970 | |
|---|
| 971 | # Walk through the virtual topology, organizing the connections into |
|---|
| 972 | # 2-node connections (links) and more-than-2-node connections (lans). |
|---|
| 973 | # When a lan is created, it's added to the list of nodes (there's a |
|---|
| 974 | # node in the visualization for the lan). |
|---|
| 975 | for l in topo_lans: |
|---|
| 976 | if links.has_key(l['vname']): |
|---|
| 977 | if len(links[l['vname']]) < 2: |
|---|
| 978 | links[l['vname']].append(l['vnode']) |
|---|
| 979 | else: |
|---|
| 980 | nodes.append(l['vname']) |
|---|
| 981 | lans[l['vname']] = links[l['vname']] |
|---|
| 982 | del links[l['vname']] |
|---|
| 983 | lans[l['vname']].append(l['vnode']) |
|---|
| 984 | elif lans.has_key(l['vname']): |
|---|
| 985 | lans[l['vname']].append(l['vnode']) |
|---|
| 986 | else: |
|---|
| 987 | links[l['vname']] = [ l['vnode'] ] |
|---|
| 988 | |
|---|
| 989 | |
|---|
| 990 | # Open up a temporary file for dot to turn into a visualization |
|---|
| 991 | try: |
|---|
| 992 | df, dotname = tempfile.mkstemp() |
|---|
| 993 | dotfile = os.fdopen(df, 'w') |
|---|
| 994 | except IOError: |
|---|
| 995 | raise service_error(service_error.internal, |
|---|
| 996 | "Failed to open file in genviz") |
|---|
| 997 | |
|---|
| 998 | try: |
|---|
| 999 | dnull = open('/dev/null', 'w') |
|---|
| 1000 | except IOError: |
|---|
| 1001 | service_error(service_error.internal, |
|---|
| 1002 | "Failed to open /dev/null in genviz") |
|---|
| 1003 | |
|---|
| 1004 | # Generate a dot/neato input file from the links, nodes and lans |
|---|
| 1005 | try: |
|---|
| 1006 | print >>dotfile, "graph G {" |
|---|
| 1007 | for n in nodes: |
|---|
| 1008 | print >>dotfile, '\t"%s"' % n |
|---|
| 1009 | for l in links.keys(): |
|---|
| 1010 | print >>dotfile, '\t"%s" -- "%s"' % tuple(links[l]) |
|---|
| 1011 | for l in lans.keys(): |
|---|
| 1012 | for n in lans[l]: |
|---|
| 1013 | print >>dotfile, '\t "%s" -- "%s"' % (n,l) |
|---|
| 1014 | print >>dotfile, "}" |
|---|
| 1015 | dotfile.close() |
|---|
| 1016 | except TypeError: |
|---|
| 1017 | raise service_error(service_error.internal, |
|---|
| 1018 | "Single endpoint link in vtopo") |
|---|
| 1019 | except IOError: |
|---|
| 1020 | raise service_error(service_error.internal, "Cannot write dot file") |
|---|
| 1021 | |
|---|
| 1022 | # Use dot to create a visualization |
|---|
| 1023 | dot = Popen([neato, '-Gstart=rand', '-Gepsilon=0.005', '-Gmaxiter=2000', |
|---|
| 1024 | '-Gpack=true', dotname], stdout=PIPE, stderr=dnull, |
|---|
| 1025 | close_fds=True) |
|---|
| 1026 | dnull.close() |
|---|
| 1027 | |
|---|
| 1028 | # Translate dot to vis format |
|---|
| 1029 | vis_nodes = [ ] |
|---|
| 1030 | vis = { 'node': vis_nodes } |
|---|
| 1031 | for line in dot.stdout: |
|---|
| 1032 | m = vis_re.match(line) |
|---|
| 1033 | if m: |
|---|
| 1034 | vn = m.group(1) |
|---|
| 1035 | vis_node = {'name': vn, \ |
|---|
| 1036 | 'x': float(m.group(2)),\ |
|---|
| 1037 | 'y' : float(m.group(3)),\ |
|---|
| 1038 | } |
|---|
| 1039 | if vn in links.keys() or vn in lans.keys(): |
|---|
| 1040 | vis_node['type'] = 'lan' |
|---|
| 1041 | else: |
|---|
| 1042 | vis_node['type'] = 'node' |
|---|
| 1043 | vis_nodes.append(vis_node) |
|---|
| 1044 | rv = dot.wait() |
|---|
| 1045 | |
|---|
| 1046 | os.remove(dotname) |
|---|
| 1047 | if rv == 0 : return vis |
|---|
| 1048 | else: return None |
|---|
| 1049 | |
|---|
| 1050 | def get_access(self, tb, nodes, user, tbparam, master, export_project, |
|---|
| 1051 | access_user): |
|---|
| 1052 | """ |
|---|
| 1053 | Get access to testbed through fedd and set the parameters for that tb |
|---|
| 1054 | """ |
|---|
| 1055 | uri = self.tbmap.get(tb, None) |
|---|
| 1056 | if not uri: |
|---|
| 1057 | raise service_error(serice_error.server_config, |
|---|
| 1058 | "Unknown testbed: %s" % tb) |
|---|
| 1059 | |
|---|
| 1060 | # currently this lumps all users into one service access group |
|---|
| 1061 | service_keys = [ a for u in user \ |
|---|
| 1062 | for a in u.get('access', []) \ |
|---|
| 1063 | if a.has_key('sshPubkey')] |
|---|
| 1064 | |
|---|
| 1065 | if len(service_keys) == 0: |
|---|
| 1066 | raise service_error(service_error.req, |
|---|
| 1067 | "Must have at least one SSH pubkey for services") |
|---|
| 1068 | |
|---|
| 1069 | # Tweak search order so that if there are entries in access_user that |
|---|
| 1070 | # have a project matching the export project, we try them first |
|---|
| 1071 | if export_project and export_project.has_key('localname'): |
|---|
| 1072 | pn = export_project['localname'] |
|---|
| 1073 | |
|---|
| 1074 | access_sequence = [ (p, u) for p, u in access_user if p == pn] |
|---|
| 1075 | access_sequence.extend([(p, u) for p, u in access_user if p != pn]) |
|---|
| 1076 | else: |
|---|
| 1077 | access_sequence = access_user |
|---|
| 1078 | |
|---|
| 1079 | for p, u in access_sequence: |
|---|
| 1080 | self.log.debug(("[get_access] Attempting access from (%s, %s) " + \ |
|---|
| 1081 | "to %s") % ((p or "None"), u, uri)) |
|---|
| 1082 | |
|---|
| 1083 | if p: |
|---|
| 1084 | # Request with user and project specified |
|---|
| 1085 | req = {\ |
|---|
| 1086 | 'destinationTestbed' : { 'uri' : uri }, |
|---|
| 1087 | 'project': { |
|---|
| 1088 | 'name': {'localname': p}, |
|---|
| 1089 | 'user': [ {'userID': { 'localname': u } } ], |
|---|
| 1090 | }, |
|---|
| 1091 | 'user': user, |
|---|
| 1092 | 'allocID' : { 'localname': 'test' }, |
|---|
| 1093 | 'createAccess' : [ { 'sshPubkey' : self.ssh_pubkey } ], |
|---|
| 1094 | 'serviceAccess' : service_keys |
|---|
| 1095 | } |
|---|
| 1096 | else: |
|---|
| 1097 | # Request with only user specified |
|---|
| 1098 | req = {\ |
|---|
| 1099 | 'destinationTestbed' : { 'uri' : uri }, |
|---|
| 1100 | 'user': [ {'userID': { 'localname': u } } ], |
|---|
| 1101 | 'allocID' : { 'localname': 'test' }, |
|---|
| 1102 | 'createAccess' : [ { 'sshPubkey' : self.ssh_pubkey } ], |
|---|
| 1103 | 'serviceAccess' : service_keys |
|---|
| 1104 | } |
|---|
| 1105 | |
|---|
| 1106 | if tb == master: |
|---|
| 1107 | # NB, the export_project parameter is a dict that includes |
|---|
| 1108 | # the type |
|---|
| 1109 | req['exportProject'] = export_project |
|---|
| 1110 | |
|---|
| 1111 | # node resources if any |
|---|
| 1112 | if nodes != None and len(nodes) > 0: |
|---|
| 1113 | rnodes = [ ] |
|---|
| 1114 | for n in nodes: |
|---|
| 1115 | rn = { } |
|---|
| 1116 | image, hw, count = n.split(":") |
|---|
| 1117 | if image: rn['image'] = [ image ] |
|---|
| 1118 | if hw: rn['hardware'] = [ hw ] |
|---|
| 1119 | if count and int(count) >0 : rn['count'] = int(count) |
|---|
| 1120 | rnodes.append(rn) |
|---|
| 1121 | req['resources']= { } |
|---|
| 1122 | req['resources']['node'] = rnodes |
|---|
| 1123 | |
|---|
| 1124 | try: |
|---|
| 1125 | if self.local_access.has_key(uri): |
|---|
| 1126 | # Local access call |
|---|
| 1127 | req = { 'RequestAccessRequestBody' : req } |
|---|
| 1128 | r = self.local_access[uri].RequestAccess(req, |
|---|
| 1129 | fedid(file=self.cert_file)) |
|---|
| 1130 | r = { 'RequestAccessResponseBody' : r } |
|---|
| 1131 | else: |
|---|
| 1132 | r = self.call_RequestAccess(uri, req, |
|---|
| 1133 | self.cert_file, self.cert_pwd, self.trusted_certs) |
|---|
| 1134 | except service_error, e: |
|---|
| 1135 | if e.code == service_error.access: |
|---|
| 1136 | self.log.debug("[get_access] Access denied") |
|---|
| 1137 | r = None |
|---|
| 1138 | continue |
|---|
| 1139 | else: |
|---|
| 1140 | raise e |
|---|
| 1141 | |
|---|
| 1142 | if r.has_key('RequestAccessResponseBody'): |
|---|
| 1143 | # Through to here we have a valid response, not a fault. |
|---|
| 1144 | # Access denied is a fault, so something better or worse than |
|---|
| 1145 | # access denied has happened. |
|---|
| 1146 | r = r['RequestAccessResponseBody'] |
|---|
| 1147 | self.log.debug("[get_access] Access granted") |
|---|
| 1148 | break |
|---|
| 1149 | else: |
|---|
| 1150 | raise service_error(service_error.protocol, |
|---|
| 1151 | "Bad proxy response") |
|---|
| 1152 | |
|---|
| 1153 | if not r: |
|---|
| 1154 | raise service_error(service_error.access, |
|---|
| 1155 | "Access denied by %s (%s)" % (tb, uri)) |
|---|
| 1156 | |
|---|
| 1157 | e = r['emulab'] |
|---|
| 1158 | p = e['project'] |
|---|
| 1159 | tbparam[tb] = { |
|---|
| 1160 | "boss": e['boss'], |
|---|
| 1161 | "host": e['ops'], |
|---|
| 1162 | "domain": e['domain'], |
|---|
| 1163 | "fs": e['fileServer'], |
|---|
| 1164 | "eventserver": e['eventServer'], |
|---|
| 1165 | "project": unpack_id(p['name']), |
|---|
| 1166 | "emulab" : e, |
|---|
| 1167 | "allocID" : r['allocID'], |
|---|
| 1168 | } |
|---|
| 1169 | # Make the testbed name be the label the user applied |
|---|
| 1170 | p['testbed'] = {'localname': tb } |
|---|
| 1171 | |
|---|
| 1172 | for u in p['user']: |
|---|
| 1173 | role = u.get('role', None) |
|---|
| 1174 | if role == 'experimentCreation': |
|---|
| 1175 | tbparam[tb]['user'] = unpack_id(u['userID']) |
|---|
| 1176 | break |
|---|
| 1177 | else: |
|---|
| 1178 | raise service_error(service_error.internal, |
|---|
| 1179 | "No createExperimentUser from %s" %tb) |
|---|
| 1180 | |
|---|
| 1181 | # Add attributes to barameter space. We don't allow attributes to |
|---|
| 1182 | # overlay any parameters already installed. |
|---|
| 1183 | for a in e['fedAttr']: |
|---|
| 1184 | try: |
|---|
| 1185 | if a['attribute'] and isinstance(a['attribute'], basestring)\ |
|---|
| 1186 | and not tbparam[tb].has_key(a['attribute'].lower()): |
|---|
| 1187 | tbparam[tb][a['attribute'].lower()] = a['value'] |
|---|
| 1188 | except KeyError: |
|---|
| 1189 | self.log.error("Bad attribute in response: %s" % a) |
|---|
| 1190 | |
|---|
| 1191 | def release_access(self, tb, aid): |
|---|
| 1192 | """ |
|---|
| 1193 | Release access to testbed through fedd |
|---|
| 1194 | """ |
|---|
| 1195 | |
|---|
| 1196 | uri = self.tbmap.get(tb, None) |
|---|
| 1197 | if not uri: |
|---|
| 1198 | raise service_error(serice_error.server_config, |
|---|
| 1199 | "Unknown testbed: %s" % tb) |
|---|
| 1200 | |
|---|
| 1201 | if self.local_access.has_key(uri): |
|---|
| 1202 | resp = self.local_access[uri].ReleaseAccess(\ |
|---|
| 1203 | { 'ReleaseAccessRequestBody' : {'allocID': aid},}, |
|---|
| 1204 | fedid(file=self.cert_file)) |
|---|
| 1205 | resp = { 'ReleaseAccessResponseBody': resp } |
|---|
| 1206 | else: |
|---|
| 1207 | resp = self.call_ReleaseAccess(uri, {'allocID': aid}, |
|---|
| 1208 | self.cert_file, self.cert_pwd, self.trusted_certs) |
|---|
| 1209 | |
|---|
| 1210 | # better error coding |
|---|
| 1211 | |
|---|
| 1212 | def remote_splitter(self, uri, desc, master): |
|---|
| 1213 | |
|---|
| 1214 | req = { |
|---|
| 1215 | 'description' : { 'ns2description': desc }, |
|---|
| 1216 | 'master': master, |
|---|
| 1217 | 'include_fedkit': bool(self.fedkit), |
|---|
| 1218 | 'include_gatewaykit': bool(self.gatewaykit) |
|---|
| 1219 | } |
|---|
| 1220 | |
|---|
| 1221 | r = self.call_Ns2Split(uri, req, self.cert_file, self.cert_pwd, |
|---|
| 1222 | self.trusted_certs) |
|---|
| 1223 | |
|---|
| 1224 | if r.has_key('Ns2SplitResponseBody'): |
|---|
| 1225 | r = r['Ns2SplitResponseBody'] |
|---|
| 1226 | if r.has_key('output'): |
|---|
| 1227 | return r['output'].splitlines() |
|---|
| 1228 | else: |
|---|
| 1229 | raise service_error(service_error.protocol, |
|---|
| 1230 | "Bad splitter response (no output)") |
|---|
| 1231 | else: |
|---|
| 1232 | raise service_error(service_error.protocol, "Bad splitter response") |
|---|
| 1233 | |
|---|
| 1234 | class current_testbed: |
|---|
| 1235 | """ |
|---|
| 1236 | Object for collecting the current testbed description. The testbed |
|---|
| 1237 | description is saved to a file with the local testbed variables |
|---|
| 1238 | subsittuted line by line. |
|---|
| 1239 | """ |
|---|
| 1240 | def __init__(self, eid, tmpdir, fedkit, gatewaykit): |
|---|
| 1241 | def tar_list_to_string(tl): |
|---|
| 1242 | if tl is None: return None |
|---|
| 1243 | |
|---|
| 1244 | rv = "" |
|---|
| 1245 | for t in tl: |
|---|
| 1246 | rv += " %s PROJDIR/tarfiles/EID/%s" % \ |
|---|
| 1247 | (t[0], os.path.basename(t[1])) |
|---|
| 1248 | return rv |
|---|
| 1249 | |
|---|
| 1250 | |
|---|
| 1251 | self.begin_testbed = re.compile("^#\s+Begin\s+Testbed\s+\((\w+)\)") |
|---|
| 1252 | self.end_testbed = re.compile("^#\s+End\s+Testbed\s+\((\w+)\)") |
|---|
| 1253 | self.current_testbed = None |
|---|
| 1254 | self.testbed_file = None |
|---|
| 1255 | |
|---|
| 1256 | self.def_expstart = \ |
|---|
| 1257 | "sudo -H /bin/sh FEDDIR/fed_bootstrap >& /tmp/federate"; |
|---|
| 1258 | self.def_mexpstart = "sudo -H FEDDIR/make_hosts FEDDIR/hosts"; |
|---|
| 1259 | self.def_gwstart = \ |
|---|
| 1260 | "sudo -H FEDDIR/fed-tun.pl -f GWCONF>& /tmp/bridge.log"; |
|---|
| 1261 | self.def_mgwstart = \ |
|---|
| 1262 | "sudo -H FEDDIR/fed-tun.pl -f GWCONF >& /tmp/bridge.log"; |
|---|
| 1263 | self.def_gwimage = "FBSD61-TUNNEL2"; |
|---|
| 1264 | self.def_gwtype = "pc"; |
|---|
| 1265 | self.def_mgwcmd = '# ' |
|---|
| 1266 | self.def_mgwcmdparams = '' |
|---|
| 1267 | self.def_gwcmd = '# ' |
|---|
| 1268 | self.def_gwcmdparams = '' |
|---|
| 1269 | |
|---|
| 1270 | self.eid = eid |
|---|
| 1271 | self.tmpdir = tmpdir |
|---|
| 1272 | # Convert fedkit and gateway kit (which are lists of tuples) into a |
|---|
| 1273 | # substituition string. |
|---|
| 1274 | self.fedkit = tar_list_to_string(fedkit) |
|---|
| 1275 | self.gatewaykit = tar_list_to_string(gatewaykit) |
|---|
| 1276 | |
|---|
| 1277 | def __call__(self, line, master, allocated, tbparams): |
|---|
| 1278 | # Capture testbed topology descriptions |
|---|
| 1279 | if self.current_testbed == None: |
|---|
| 1280 | m = self.begin_testbed.match(line) |
|---|
| 1281 | if m != None: |
|---|
| 1282 | self.current_testbed = m.group(1) |
|---|
| 1283 | if self.current_testbed == None: |
|---|
| 1284 | raise service_error(service_error.req, |
|---|
| 1285 | "Bad request format (unnamed testbed)") |
|---|
| 1286 | allocated[self.current_testbed] = \ |
|---|
| 1287 | allocated.get(self.current_testbed,0) + 1 |
|---|
| 1288 | tb_dir = "%s/%s" % (self.tmpdir, self.current_testbed) |
|---|
| 1289 | if not os.path.exists(tb_dir): |
|---|
| 1290 | try: |
|---|
| 1291 | os.mkdir(tb_dir) |
|---|
| 1292 | except IOError: |
|---|
| 1293 | raise service_error(service_error.internal, |
|---|
| 1294 | "Cannot create %s" % tb_dir) |
|---|
| 1295 | try: |
|---|
| 1296 | self.testbed_file = open("%s/%s.%s.tcl" % |
|---|
| 1297 | (tb_dir, self.eid, self.current_testbed), 'w') |
|---|
| 1298 | except IOError: |
|---|
| 1299 | self.testbed_file = None |
|---|
| 1300 | return True |
|---|
| 1301 | else: return False |
|---|
| 1302 | else: |
|---|
| 1303 | m = self.end_testbed.match(line) |
|---|
| 1304 | if m != None: |
|---|
| 1305 | if m.group(1) != self.current_testbed: |
|---|
| 1306 | raise service_error(service_error.internal, |
|---|
| 1307 | "Mismatched testbed markers!?") |
|---|
| 1308 | if self.testbed_file != None: |
|---|
| 1309 | self.testbed_file.close() |
|---|
| 1310 | self.testbed_file = None |
|---|
| 1311 | self.current_testbed = None |
|---|
| 1312 | elif self.testbed_file: |
|---|
| 1313 | # Substitute variables and put the line into the local |
|---|
| 1314 | # testbed file. |
|---|
| 1315 | gwtype = tbparams[self.current_testbed].get(\ |
|---|
| 1316 | 'connectortype', self.def_gwtype) |
|---|
| 1317 | gwimage = tbparams[self.current_testbed].get(\ |
|---|
| 1318 | 'connectorimage', self.def_gwimage) |
|---|
| 1319 | mgwstart = tbparams[self.current_testbed].get(\ |
|---|
| 1320 | 'masterconnectorstartcmd', self.def_mgwstart) |
|---|
| 1321 | mexpstart = tbparams[self.current_testbed].get(\ |
|---|
| 1322 | 'masternodestartcmd', self.def_mexpstart) |
|---|
| 1323 | gwstart = tbparams[self.current_testbed].get(\ |
|---|
| 1324 | 'slaveconnectorstartcmd', self.def_gwstart) |
|---|
| 1325 | expstart = tbparams[self.current_testbed].get(\ |
|---|
| 1326 | 'slavenodestartcmd', self.def_expstart) |
|---|
| 1327 | project = tbparams[self.current_testbed].get('project') |
|---|
| 1328 | gwcmd = tbparams[self.current_testbed].get(\ |
|---|
| 1329 | 'slaveconnectorcmd', self.def_gwcmd) |
|---|
| 1330 | gwcmdparams = tbparams[self.current_testbed].get(\ |
|---|
| 1331 | 'slaveconnectorcmdparams', self.def_gwcmdparams) |
|---|
| 1332 | mgwcmd = tbparams[self.current_testbed].get(\ |
|---|
| 1333 | 'masterconnectorcmd', self.def_gwcmd) |
|---|
| 1334 | mgwcmdparams = tbparams[self.current_testbed].get(\ |
|---|
| 1335 | 'masterconnectorcmdparams', self.def_gwcmdparams) |
|---|
| 1336 | line = re.sub("GWTYPE", gwtype, line) |
|---|
| 1337 | line = re.sub("GWIMAGE", gwimage, line) |
|---|
| 1338 | if self.current_testbed == master: |
|---|
| 1339 | line = re.sub("GWSTART", mgwstart, line) |
|---|
| 1340 | line = re.sub("EXPSTART", mexpstart, line) |
|---|
| 1341 | # NB GWCMDPARAMS is a prefix of GWCMD, so expand first |
|---|
| 1342 | line = re.sub("GWCMDPARAMS", mgwcmdparams, line) |
|---|
| 1343 | line = re.sub("(#\s*)?GWCMD", mgwcmd, line) |
|---|
| 1344 | else: |
|---|
| 1345 | line = re.sub("GWSTART", gwstart, line) |
|---|
| 1346 | line = re.sub("EXPSTART", expstart, line) |
|---|
| 1347 | # NB GWCMDPARAMS is a prefix of GWCMD, so expand first |
|---|
| 1348 | line = re.sub("GWCMDPARAMS", gwcmdparams, line) |
|---|
| 1349 | line = re.sub("(#\s*)?GWCMD", gwcmd, line) |
|---|
| 1350 | #These expansions contain EID and PROJDIR. NB these are |
|---|
| 1351 | # local fedkit and gatewaykit, which are strings. |
|---|
| 1352 | if self.fedkit: |
|---|
| 1353 | line = re.sub("FEDKIT", self.fedkit, line) |
|---|
| 1354 | if self.gatewaykit: |
|---|
| 1355 | line = re.sub("GATEWAYKIT", self.gatewaykit, line) |
|---|
| 1356 | line = re.sub("GWCONF", "FEDDIR`hostname`.gw.conf", line) |
|---|
| 1357 | line = re.sub("PROJDIR", "/proj/%s/" % project, line) |
|---|
| 1358 | line = re.sub("EID", self.eid, line) |
|---|
| 1359 | line = re.sub("FEDDIR", "/proj/%s/exp/%s/tmp/" % \ |
|---|
| 1360 | (project, self.eid), line) |
|---|
| 1361 | print >>self.testbed_file, line |
|---|
| 1362 | return True |
|---|
| 1363 | |
|---|
| 1364 | class allbeds: |
|---|
| 1365 | """ |
|---|
| 1366 | Process the Allbeds section. Get access to each federant and save the |
|---|
| 1367 | parameters in tbparams |
|---|
| 1368 | """ |
|---|
| 1369 | def __init__(self, get_access): |
|---|
| 1370 | self.begin_allbeds = re.compile("^#\s+Begin\s+Allbeds") |
|---|
| 1371 | self.end_allbeds = re.compile("^#\s+End\s+Allbeds") |
|---|
| 1372 | self.in_allbeds = False |
|---|
| 1373 | self.get_access = get_access |
|---|
| 1374 | |
|---|
| 1375 | def __call__(self, line, user, tbparams, master, export_project, |
|---|
| 1376 | access_user): |
|---|
| 1377 | # Testbed access parameters |
|---|
| 1378 | if not self.in_allbeds: |
|---|
| 1379 | if self.begin_allbeds.match(line): |
|---|
| 1380 | self.in_allbeds = True |
|---|
| 1381 | return True |
|---|
| 1382 | else: |
|---|
| 1383 | return False |
|---|
| 1384 | else: |
|---|
| 1385 | if self.end_allbeds.match(line): |
|---|
| 1386 | self.in_allbeds = False |
|---|
| 1387 | else: |
|---|
| 1388 | nodes = line.split('|') |
|---|
| 1389 | tb = nodes.pop(0) |
|---|
| 1390 | self.get_access(tb, nodes, user, tbparams, master, |
|---|
| 1391 | export_project, access_user) |
|---|
| 1392 | return True |
|---|
| 1393 | |
|---|
| 1394 | class gateways: |
|---|
| 1395 | def __init__(self, eid, master, tmpdir, gw_pubkey, |
|---|
| 1396 | gw_secretkey, copy_file, fedkit): |
|---|
| 1397 | self.begin_gateways = \ |
|---|
| 1398 | re.compile("^#\s+Begin\s+gateways\s+\((\w+)\)") |
|---|
| 1399 | self.end_gateways = re.compile("^#\s+End\s+gateways\s+\((\w+)\)") |
|---|
| 1400 | self.current_gateways = None |
|---|
| 1401 | self.control_gateway = None |
|---|
| 1402 | self.active_end = { } |
|---|
| 1403 | |
|---|
| 1404 | self.eid = eid |
|---|
| 1405 | self.master = master |
|---|
| 1406 | self.tmpdir = tmpdir |
|---|
| 1407 | self.gw_pubkey_base = gw_pubkey |
|---|
| 1408 | self.gw_secretkey_base = gw_secretkey |
|---|
| 1409 | |
|---|
| 1410 | self.copy_file = copy_file |
|---|
| 1411 | self.fedkit = fedkit |
|---|
| 1412 | |
|---|
| 1413 | |
|---|
| 1414 | def gateway_conf_file(self, gw, master, eid, pubkey, privkey, |
|---|
| 1415 | active_end, tbparams, dtb, myname, desthost, type): |
|---|
| 1416 | """ |
|---|
| 1417 | Produce a gateway configuration file from a gateways line. |
|---|
| 1418 | """ |
|---|
| 1419 | |
|---|
| 1420 | sproject = tbparams[gw].get('project', 'project') |
|---|
| 1421 | dproject = tbparams[dtb].get('project', 'project') |
|---|
| 1422 | sdomain = ".%s.%s%s" % (eid, sproject, |
|---|
| 1423 | tbparams[gw].get('domain', ".example.com")) |
|---|
| 1424 | ddomain = ".%s.%s%s" % (eid, dproject, |
|---|
| 1425 | tbparams[dtb].get('domain', ".example.com")) |
|---|
| 1426 | boss = tbparams[master].get('boss', "boss") |
|---|
| 1427 | fs = tbparams[master].get('fs', "fs") |
|---|
| 1428 | event_server = "%s%s" % \ |
|---|
| 1429 | (tbparams[gw].get('eventserver', "event_server"), |
|---|
| 1430 | tbparams[gw].get('domain', "example.com")) |
|---|
| 1431 | remote_event_server = "%s%s" % \ |
|---|
| 1432 | (tbparams[dtb].get('eventserver', "event_server"), |
|---|
| 1433 | tbparams[dtb].get('domain', "example.com")) |
|---|
| 1434 | seer_control = "%s%s" % \ |
|---|
| 1435 | (tbparams[gw].get('control', "control"), sdomain) |
|---|
| 1436 | tunnel_iface = tbparams[gw].get("tunnelinterface", None) |
|---|
| 1437 | |
|---|
| 1438 | if self.fedkit: |
|---|
| 1439 | remote_script_dir = "/usr/local/federation/bin" |
|---|
| 1440 | local_script_dir = "/usr/local/federation/bin" |
|---|
| 1441 | else: |
|---|
| 1442 | remote_script_dir = "/proj/%s/exp/%s/tmp" % ( dproject, eid) |
|---|
| 1443 | local_script_dir = "/proj/%s/exp/%s/tmp" % ( sproject, eid) |
|---|
| 1444 | |
|---|
| 1445 | local_key_dir = "/proj/%s/exp/%s/tmp" % ( sproject, eid) |
|---|
| 1446 | remote_conf_dir = "/proj/%s/exp/%s/tmp" % ( dproject, eid) |
|---|
| 1447 | tunnel_cfg = tbparams[gw].get("tunnelcfg", "false") |
|---|
| 1448 | |
|---|
| 1449 | conf_file = "%s%s.gw.conf" % (myname, sdomain) |
|---|
| 1450 | remote_conf_file = "%s%s.gw.conf" % (desthost, ddomain) |
|---|
| 1451 | |
|---|
| 1452 | # translate to lower case so the `hostname` hack for specifying |
|---|
| 1453 | # configuration files works. |
|---|
| 1454 | conf_file = conf_file.lower(); |
|---|
| 1455 | remote_conf_file = remote_conf_file.lower(); |
|---|
| 1456 | |
|---|
| 1457 | if dtb == master: |
|---|
| 1458 | active = "false" |
|---|
| 1459 | elif gw == master: |
|---|
| 1460 | active = "true" |
|---|
| 1461 | elif active_end.has_key('%s-%s' % (dtb, gw)): |
|---|
| 1462 | active = "false" |
|---|
| 1463 | else: |
|---|
| 1464 | active_end['%s-%s' % (gw, dtb)] = 1 |
|---|
| 1465 | active = "true" |
|---|
| 1466 | |
|---|
| 1467 | gwconfig = open("%s/%s/%s" % (self.tmpdir, gw, conf_file), "w") |
|---|
| 1468 | print >>gwconfig, "Active: %s" % active |
|---|
| 1469 | print >>gwconfig, "TunnelCfg: %s" % tunnel_cfg |
|---|
| 1470 | if tunnel_iface: |
|---|
| 1471 | print >>gwconfig, "Interface: %s" % tunnel_iface |
|---|
| 1472 | print >>gwconfig, "BossName: %s" % boss |
|---|
| 1473 | print >>gwconfig, "FsName: %s" % fs |
|---|
| 1474 | print >>gwconfig, "EventServerName: %s" % event_server |
|---|
| 1475 | print >>gwconfig, "RemoteEventServerName: %s" % remote_event_server |
|---|
| 1476 | print >>gwconfig, "SeerControl: %s" % seer_control |
|---|
| 1477 | print >>gwconfig, "Type: %s" % type |
|---|
| 1478 | print >>gwconfig, "RemoteScriptDir: %s" % remote_script_dir |
|---|
| 1479 | print >>gwconfig, "EventRepeater: %s/fed_evrepeater" % \ |
|---|
| 1480 | local_script_dir |
|---|
| 1481 | print >>gwconfig, "RemoteExperiment: %s/%s" % (dproject, eid) |
|---|
| 1482 | print >>gwconfig, "LocalExperiment: %s/%s" % (sproject, eid) |
|---|
| 1483 | print >>gwconfig, "RemoteConfigFile: %s/%s" % \ |
|---|
| 1484 | (remote_conf_dir, remote_conf_file) |
|---|
| 1485 | print >>gwconfig, "Peer: %s%s" % (desthost, ddomain) |
|---|
| 1486 | print >>gwconfig, "Pubkeys: %s/%s" % (local_key_dir, pubkey) |
|---|
| 1487 | print >>gwconfig, "Privkeys: %s/%s" % (local_key_dir, privkey) |
|---|
| 1488 | gwconfig.close() |
|---|
| 1489 | |
|---|
| 1490 | return active == "true" |
|---|
| 1491 | |
|---|
| 1492 | def __call__(self, line, allocated, tbparams): |
|---|
| 1493 | # Process gateways |
|---|
| 1494 | if not self.current_gateways: |
|---|
| 1495 | m = self.begin_gateways.match(line) |
|---|
| 1496 | if m: |
|---|
| 1497 | self.current_gateways = m.group(1) |
|---|
| 1498 | if allocated.has_key(self.current_gateways): |
|---|
| 1499 | # This test should always succeed |
|---|
| 1500 | tb_dir = "%s/%s" % (self.tmpdir, self.current_gateways) |
|---|
| 1501 | if not os.path.exists(tb_dir): |
|---|
| 1502 | try: |
|---|
| 1503 | os.mkdir(tb_dir) |
|---|
| 1504 | except IOError: |
|---|
| 1505 | raise service_error(service_error.internal, |
|---|
| 1506 | "Cannot create %s" % tb_dir) |
|---|
| 1507 | else: |
|---|
| 1508 | # XXX |
|---|
| 1509 | self.log.error("[gateways]: Ignoring gateways for " + \ |
|---|
| 1510 | "unknown testbed %s" % self.current_gateways) |
|---|
| 1511 | self.current_gateways = None |
|---|
| 1512 | return True |
|---|
| 1513 | else: |
|---|
| 1514 | return False |
|---|
| 1515 | else: |
|---|
| 1516 | m = self.end_gateways.match(line) |
|---|
| 1517 | if m : |
|---|
| 1518 | if m.group(1) != self.current_gateways: |
|---|
| 1519 | raise service_error(service_error.internal, |
|---|
| 1520 | "Mismatched gateway markers!?") |
|---|
| 1521 | if self.control_gateway: |
|---|
| 1522 | try: |
|---|
| 1523 | cc = open("%s/%s/client.conf" % |
|---|
| 1524 | (self.tmpdir, self.current_gateways), 'w') |
|---|
| 1525 | print >>cc, "ControlGateway: %s" % \ |
|---|
| 1526 | self.control_gateway |
|---|
| 1527 | if tbparams[self.master].has_key('smbshare'): |
|---|
| 1528 | print >>cc, "SMBSHare: %s" % \ |
|---|
| 1529 | tbparams[self.master]['smbshare'] |
|---|
| 1530 | print >>cc, "ProjectUser: %s" % \ |
|---|
| 1531 | tbparams[self.master]['user'] |
|---|
| 1532 | print >>cc, "ProjectName: %s" % \ |
|---|
| 1533 | tbparams[self.master]['project'] |
|---|
| 1534 | print >>cc, "ExperimentID: %s/%s" % \ |
|---|
| 1535 | ( tbparams[self.master]['project'], \ |
|---|
| 1536 | self.eid ) |
|---|
| 1537 | cc.close() |
|---|
| 1538 | except IOError: |
|---|
| 1539 | raise service_error(service_error.internal, |
|---|
| 1540 | "Error creating client config") |
|---|
| 1541 | # XXX: This seer specific file should disappear |
|---|
| 1542 | try: |
|---|
| 1543 | cc = open("%s/%s/seer.conf" % |
|---|
| 1544 | (self.tmpdir, self.current_gateways), |
|---|
| 1545 | 'w') |
|---|
| 1546 | if self.current_gateways != self.master: |
|---|
| 1547 | print >>cc, "ControlNode: %s" % \ |
|---|
| 1548 | self.control_gateway |
|---|
| 1549 | print >>cc, "ExperimentID: %s/%s" % \ |
|---|
| 1550 | ( tbparams[self.master]['project'], \ |
|---|
| 1551 | self.eid ) |
|---|
| 1552 | cc.close() |
|---|
| 1553 | except IOError: |
|---|
| 1554 | raise service_error(service_error.internal, |
|---|
| 1555 | "Error creating seer config") |
|---|
| 1556 | else: |
|---|
| 1557 | debug.error("[gateways]: No control gateway for %s" %\ |
|---|
| 1558 | self.current_gateways) |
|---|
| 1559 | self.current_gateways = None |
|---|
| 1560 | else: |
|---|
| 1561 | dtb, myname, desthost, type = line.split(" ") |
|---|
| 1562 | |
|---|
| 1563 | if type == "control" or type == "both": |
|---|
| 1564 | self.control_gateway = "%s.%s.%s%s" % (myname, |
|---|
| 1565 | self.eid, |
|---|
| 1566 | tbparams[self.current_gateways]['project'], |
|---|
| 1567 | tbparams[self.current_gateways]['domain']) |
|---|
| 1568 | try: |
|---|
| 1569 | active = self.gateway_conf_file(self.current_gateways, |
|---|
| 1570 | self.master, self.eid, self.gw_pubkey_base, |
|---|
| 1571 | self.gw_secretkey_base, |
|---|
| 1572 | self.active_end, tbparams, dtb, myname, |
|---|
| 1573 | desthost, type) |
|---|
| 1574 | except IOError, e: |
|---|
| 1575 | raise service_error(service_error.internal, |
|---|
| 1576 | "Failed to write config file for %s" % \ |
|---|
| 1577 | self.current_gateway) |
|---|
| 1578 | |
|---|
| 1579 | gw_pubkey = "%s/keys/%s" % \ |
|---|
| 1580 | (self.tmpdir, self.gw_pubkey_base) |
|---|
| 1581 | gw_secretkey = "%s/keys/%s" % \ |
|---|
| 1582 | (self.tmpdir, self.gw_secretkey_base) |
|---|
| 1583 | |
|---|
| 1584 | pkfile = "%s/%s/%s" % \ |
|---|
| 1585 | ( self.tmpdir, self.current_gateways, |
|---|
| 1586 | self.gw_pubkey_base) |
|---|
| 1587 | skfile = "%s/%s/%s" % \ |
|---|
| 1588 | ( self.tmpdir, self.current_gateways, |
|---|
| 1589 | self.gw_secretkey_base) |
|---|
| 1590 | |
|---|
| 1591 | if not os.path.exists(pkfile): |
|---|
| 1592 | try: |
|---|
| 1593 | self.copy_file(gw_pubkey, pkfile) |
|---|
| 1594 | except IOError: |
|---|
| 1595 | service_error(service_error.internal, |
|---|
| 1596 | "Failed to copy pubkey file") |
|---|
| 1597 | |
|---|
| 1598 | if active and not os.path.exists(skfile): |
|---|
| 1599 | try: |
|---|
| 1600 | self.copy_file(gw_secretkey, skfile) |
|---|
| 1601 | except IOError: |
|---|
| 1602 | service_error(service_error.internal, |
|---|
| 1603 | "Failed to copy secretkey file") |
|---|
| 1604 | return True |
|---|
| 1605 | |
|---|
| 1606 | class shunt_to_file: |
|---|
| 1607 | """ |
|---|
| 1608 | Simple class to write data between two regexps to a file. |
|---|
| 1609 | """ |
|---|
| 1610 | def __init__(self, begin, end, filename): |
|---|
| 1611 | """ |
|---|
| 1612 | Begin shunting on a match of begin, stop on end, send data to |
|---|
| 1613 | filename. |
|---|
| 1614 | """ |
|---|
| 1615 | self.begin = re.compile(begin) |
|---|
| 1616 | self.end = re.compile(end) |
|---|
| 1617 | self.in_shunt = False |
|---|
| 1618 | self.file = None |
|---|
| 1619 | self.filename = filename |
|---|
| 1620 | |
|---|
| 1621 | def __call__(self, line): |
|---|
| 1622 | """ |
|---|
| 1623 | Call this on each line in the input that may be shunted. |
|---|
| 1624 | """ |
|---|
| 1625 | if not self.in_shunt: |
|---|
| 1626 | if self.begin.match(line): |
|---|
| 1627 | self.in_shunt = True |
|---|
| 1628 | try: |
|---|
| 1629 | self.file = open(self.filename, "w") |
|---|
| 1630 | except: |
|---|
| 1631 | self.file = None |
|---|
| 1632 | raise |
|---|
| 1633 | return True |
|---|
| 1634 | else: |
|---|
| 1635 | return False |
|---|
| 1636 | else: |
|---|
| 1637 | if self.end.match(line): |
|---|
| 1638 | if self.file: |
|---|
| 1639 | self.file.close() |
|---|
| 1640 | self.file = None |
|---|
| 1641 | self.in_shunt = False |
|---|
| 1642 | else: |
|---|
| 1643 | if self.file: |
|---|
| 1644 | print >>self.file, line |
|---|
| 1645 | return True |
|---|
| 1646 | |
|---|
| 1647 | class shunt_to_list: |
|---|
| 1648 | """ |
|---|
| 1649 | Same interface as shunt_to_file. Data collected in self.list, one list |
|---|
| 1650 | element per line. |
|---|
| 1651 | """ |
|---|
| 1652 | def __init__(self, begin, end): |
|---|
| 1653 | self.begin = re.compile(begin) |
|---|
| 1654 | self.end = re.compile(end) |
|---|
| 1655 | self.in_shunt = False |
|---|
| 1656 | self.list = [ ] |
|---|
| 1657 | |
|---|
| 1658 | def __call__(self, line): |
|---|
| 1659 | if not self.in_shunt: |
|---|
| 1660 | if self.begin.match(line): |
|---|
| 1661 | self.in_shunt = True |
|---|
| 1662 | return True |
|---|
| 1663 | else: |
|---|
| 1664 | return False |
|---|
| 1665 | else: |
|---|
| 1666 | if self.end.match(line): |
|---|
| 1667 | self.in_shunt = False |
|---|
| 1668 | else: |
|---|
| 1669 | self.list.append(line) |
|---|
| 1670 | return True |
|---|
| 1671 | |
|---|
| 1672 | class shunt_to_string: |
|---|
| 1673 | """ |
|---|
| 1674 | Same interface as shunt_to_file. Data collected in self.str, all in |
|---|
| 1675 | one string. |
|---|
| 1676 | """ |
|---|
| 1677 | def __init__(self, begin, end): |
|---|
| 1678 | self.begin = re.compile(begin) |
|---|
| 1679 | self.end = re.compile(end) |
|---|
| 1680 | self.in_shunt = False |
|---|
| 1681 | self.str = "" |
|---|
| 1682 | |
|---|
| 1683 | def __call__(self, line): |
|---|
| 1684 | if not self.in_shunt: |
|---|
| 1685 | if self.begin.match(line): |
|---|
| 1686 | self.in_shunt = True |
|---|
| 1687 | return True |
|---|
| 1688 | else: |
|---|
| 1689 | return False |
|---|
| 1690 | else: |
|---|
| 1691 | if self.end.match(line): |
|---|
| 1692 | self.in_shunt = False |
|---|
| 1693 | else: |
|---|
| 1694 | self.str += line |
|---|
| 1695 | return True |
|---|
| 1696 | |
|---|
| 1697 | def allocate_resources(self, allocated, master, eid, expid, expcert, |
|---|
| 1698 | tbparams, tmpdir, alloc_log=None): |
|---|
| 1699 | started = { } # Testbeds where a sub-experiment started |
|---|
| 1700 | # successfully |
|---|
| 1701 | |
|---|
| 1702 | # XXX |
|---|
| 1703 | fail_soft = False |
|---|
| 1704 | |
|---|
| 1705 | log = alloc_log or self.log |
|---|
| 1706 | |
|---|
| 1707 | thread_pool = self.thread_pool(self.nthreads) |
|---|
| 1708 | threads = [ ] |
|---|
| 1709 | |
|---|
| 1710 | for tb in [ k for k in allocated.keys() if k != master]: |
|---|
| 1711 | # Create and start a thread to start the segment, and save it to |
|---|
| 1712 | # get the return value later |
|---|
| 1713 | thread_pool.wait_for_slot() |
|---|
| 1714 | t = self.pooled_thread(\ |
|---|
| 1715 | target=self.start_segment(log=log, |
|---|
| 1716 | keyfile=self.ssh_privkey_file, debug=self.debug), |
|---|
| 1717 | args=(tb, eid, tbparams, tmpdir, 0), name=tb, |
|---|
| 1718 | pdata=thread_pool, trace_file=self.trace_file) |
|---|
| 1719 | threads.append(t) |
|---|
| 1720 | t.start() |
|---|
| 1721 | |
|---|
| 1722 | # Wait until all finish |
|---|
| 1723 | thread_pool.wait_for_all_done() |
|---|
| 1724 | |
|---|
| 1725 | # If none failed, start the master |
|---|
| 1726 | failed = [ t.getName() for t in threads if not t.rv ] |
|---|
| 1727 | |
|---|
| 1728 | if len(failed) == 0: |
|---|
| 1729 | starter = self.start_segment(log=log, |
|---|
| 1730 | keyfile=self.ssh_privkey_file, debug=self.debug) |
|---|
| 1731 | if not starter(master, eid, tbparams, tmpdir): |
|---|
| 1732 | failed.append(master) |
|---|
| 1733 | |
|---|
| 1734 | succeeded = [tb for tb in allocated.keys() if tb not in failed] |
|---|
| 1735 | # If one failed clean up, unless fail_soft is set |
|---|
| 1736 | if failed: |
|---|
| 1737 | if not fail_soft: |
|---|
| 1738 | thread_pool.clear() |
|---|
| 1739 | for tb in succeeded: |
|---|
| 1740 | # Create and start a thread to stop the segment |
|---|
| 1741 | thread_pool.wait_for_slot() |
|---|
| 1742 | t = self.pooled_thread(\ |
|---|
| 1743 | target=self.stop_segment(log=log, |
|---|
| 1744 | keyfile=self.ssh_privkey_file, |
|---|
| 1745 | debug=self.debug), |
|---|
| 1746 | args=(tb, eid, tbparams), name=tb, |
|---|
| 1747 | pdata=thread_pool, trace_file=self.trace_file) |
|---|
| 1748 | t.start() |
|---|
| 1749 | # Wait until all finish |
|---|
| 1750 | thread_pool.wait_for_all_done() |
|---|
| 1751 | |
|---|
| 1752 | # release the allocations |
|---|
| 1753 | for tb in tbparams.keys(): |
|---|
| 1754 | self.release_access(tb, tbparams[tb]['allocID']) |
|---|
| 1755 | # Remove the placeholder |
|---|
| 1756 | self.state_lock.acquire() |
|---|
| 1757 | self.state[eid]['experimentStatus'] = 'failed' |
|---|
| 1758 | if self.state_filename: self.write_state() |
|---|
| 1759 | self.state_lock.release() |
|---|
| 1760 | |
|---|
| 1761 | #raise service_error(service_error.federant, |
|---|
| 1762 | # "Swap in failed on %s" % ",".join(failed)) |
|---|
| 1763 | log.error("Swap in failed on %s" % ",".join(failed)) |
|---|
| 1764 | return |
|---|
| 1765 | else: |
|---|
| 1766 | log.info("[start_segment]: Experiment %s active" % eid) |
|---|
| 1767 | |
|---|
| 1768 | log.debug("[start_experiment]: removing %s" % tmpdir) |
|---|
| 1769 | |
|---|
| 1770 | # Walk up tmpdir, deleting as we go |
|---|
| 1771 | for path, dirs, files in os.walk(tmpdir, topdown=False): |
|---|
| 1772 | for f in files: |
|---|
| 1773 | os.remove(os.path.join(path, f)) |
|---|
| 1774 | for d in dirs: |
|---|
| 1775 | os.rmdir(os.path.join(path, d)) |
|---|
| 1776 | os.rmdir(tmpdir) |
|---|
| 1777 | |
|---|
| 1778 | # Insert the experiment into our state and update the disk copy |
|---|
| 1779 | self.state_lock.acquire() |
|---|
| 1780 | self.state[expid]['experimentStatus'] = 'active' |
|---|
| 1781 | self.state[eid] = self.state[expid] |
|---|
| 1782 | if self.state_filename: self.write_state() |
|---|
| 1783 | self.state_lock.release() |
|---|
| 1784 | return |
|---|
| 1785 | |
|---|
| 1786 | def create_experiment(self, req, fid): |
|---|
| 1787 | """ |
|---|
| 1788 | The external interface to experiment creation called from the |
|---|
| 1789 | dispatcher. |
|---|
| 1790 | |
|---|
| 1791 | Creates a working directory, splits the incoming description using the |
|---|
| 1792 | splitter script and parses out the avrious subsections using the |
|---|
| 1793 | lcasses above. Once each sub-experiment is created, use pooled threads |
|---|
| 1794 | to instantiate them and start it all up. |
|---|
| 1795 | """ |
|---|
| 1796 | |
|---|
| 1797 | if not self.auth.check_attribute(fid, 'create'): |
|---|
| 1798 | raise service_error(service_error.access, "Create access denied") |
|---|
| 1799 | |
|---|
| 1800 | try: |
|---|
| 1801 | tmpdir = tempfile.mkdtemp(prefix="split-") |
|---|
| 1802 | except IOError: |
|---|
| 1803 | raise service_error(service_error.internal, "Cannot create tmp dir") |
|---|
| 1804 | |
|---|
| 1805 | gw_pubkey_base = "fed.%s.pub" % self.ssh_type |
|---|
| 1806 | gw_secretkey_base = "fed.%s" % self.ssh_type |
|---|
| 1807 | gw_pubkey = tmpdir + "/keys/" + gw_pubkey_base |
|---|
| 1808 | gw_secretkey = tmpdir + "/keys/" + gw_secretkey_base |
|---|
| 1809 | tclfile = tmpdir + "/experiment.tcl" |
|---|
| 1810 | tbparams = { } |
|---|
| 1811 | try: |
|---|
| 1812 | access_user = self.accessdb[fid] |
|---|
| 1813 | except KeyError: |
|---|
| 1814 | raise service_error(service_error.internal, |
|---|
| 1815 | "Access map and authorizer out of sync in " + \ |
|---|
| 1816 | "create_experiment for fedid %s" % fid) |
|---|
| 1817 | |
|---|
| 1818 | pid = "dummy" |
|---|
| 1819 | gid = "dummy" |
|---|
| 1820 | try: |
|---|
| 1821 | os.mkdir(tmpdir+"/keys") |
|---|
| 1822 | except OSError: |
|---|
| 1823 | raise service_error(service_error.internal, |
|---|
| 1824 | "Can't make temporary dir") |
|---|
| 1825 | |
|---|
| 1826 | req = req.get('CreateRequestBody', None) |
|---|
| 1827 | if not req: |
|---|
| 1828 | raise service_error(service_error.req, |
|---|
| 1829 | "Bad request format (no CreateRequestBody)") |
|---|
| 1830 | # The tcl parser needs to read a file so put the content into that file |
|---|
| 1831 | descr=req.get('experimentdescription', None) |
|---|
| 1832 | if descr: |
|---|
| 1833 | file_content=descr.get('ns2description', None) |
|---|
| 1834 | if file_content: |
|---|
| 1835 | try: |
|---|
| 1836 | f = open(tclfile, 'w') |
|---|
| 1837 | f.write(file_content) |
|---|
| 1838 | f.close() |
|---|
| 1839 | except IOError: |
|---|
| 1840 | raise service_error(service_error.internal, |
|---|
| 1841 | "Cannot write temp experiment description") |
|---|
| 1842 | else: |
|---|
| 1843 | raise service_error(service_error.req, |
|---|
| 1844 | "Only ns2descriptions supported") |
|---|
| 1845 | else: |
|---|
| 1846 | raise service_error(service_error.req, "No experiment description") |
|---|
| 1847 | |
|---|
| 1848 | # Generate an ID for the experiment (slice) and a certificate that the |
|---|
| 1849 | # allocator can use to prove they own it. We'll ship it back through |
|---|
| 1850 | # the encrypted connection. |
|---|
| 1851 | (expid, expcert) = generate_fedid("test", dir=tmpdir, log=self.log) |
|---|
| 1852 | |
|---|
| 1853 | if req.has_key('experimentID') and \ |
|---|
| 1854 | req['experimentID'].has_key('localname'): |
|---|
| 1855 | overwrite = False |
|---|
| 1856 | eid = req['experimentID']['localname'] |
|---|
| 1857 | # If there's an old failed experiment here with the same local name |
|---|
| 1858 | # and accessible by this user, we'll overwrite it, otherwise we'll |
|---|
| 1859 | # fall through and do the collision avoidance. |
|---|
| 1860 | old_expid = self.get_experiment_fedid(eid) |
|---|
| 1861 | if old_expid and self.check_experiment_access(fid, old_expid): |
|---|
| 1862 | self.state_lock.acquire() |
|---|
| 1863 | status = self.state[eid].get('experimentStatus', None) |
|---|
| 1864 | if status and status == 'failed': |
|---|
| 1865 | # remove the old access attribute |
|---|
| 1866 | self.auth.unset_attribute(fid, old_expid) |
|---|
| 1867 | overwrite = True |
|---|
| 1868 | del self.state[eid] |
|---|
| 1869 | del self.state[old_expid] |
|---|
| 1870 | self.state_lock.release() |
|---|
| 1871 | self.state_lock.acquire() |
|---|
| 1872 | while (self.state.has_key(eid) and not overwrite): |
|---|
| 1873 | eid += random.choice(string.ascii_letters) |
|---|
| 1874 | # Initial state |
|---|
| 1875 | self.state[eid] = { |
|---|
| 1876 | 'experimentID' : \ |
|---|
| 1877 | [ { 'localname' : eid }, {'fedid': expid } ], |
|---|
| 1878 | 'experimentStatus': 'starting', |
|---|
| 1879 | 'experimentAccess': { 'X509' : expcert }, |
|---|
| 1880 | 'owner': fid, |
|---|
| 1881 | 'log' : [], |
|---|
| 1882 | } |
|---|
| 1883 | self.state[expid] = self.state[eid] |
|---|
| 1884 | if self.state_filename: self.write_state() |
|---|
| 1885 | self.state_lock.release() |
|---|
| 1886 | else: |
|---|
| 1887 | eid = self.exp_stem |
|---|
| 1888 | for i in range(0,5): |
|---|
| 1889 | eid += random.choice(string.ascii_letters) |
|---|
| 1890 | self.state_lock.acquire() |
|---|
| 1891 | while (self.state.has_key(eid)): |
|---|
| 1892 | eid = self.exp_stem |
|---|
| 1893 | for i in range(0,5): |
|---|
| 1894 | eid += random.choice(string.ascii_letters) |
|---|
| 1895 | # Initial state |
|---|
| 1896 | self.state[eid] = { |
|---|
| 1897 | 'experimentID' : \ |
|---|
| 1898 | [ { 'localname' : eid }, {'fedid': expid } ], |
|---|
| 1899 | 'experimentStatus': 'starting', |
|---|
| 1900 | 'experimentAccess': { 'X509' : expcert }, |
|---|
| 1901 | 'owner': fid, |
|---|
| 1902 | 'log' : [], |
|---|
| 1903 | } |
|---|
| 1904 | self.state[expid] = self.state[eid] |
|---|
| 1905 | if self.state_filename: self.write_state() |
|---|
| 1906 | self.state_lock.release() |
|---|
| 1907 | |
|---|
| 1908 | try: |
|---|
| 1909 | # This catches exceptions to clear the placeholder if necessary |
|---|
| 1910 | try: |
|---|
| 1911 | self.generate_ssh_keys(gw_secretkey, self.ssh_type) |
|---|
| 1912 | except ValueError: |
|---|
| 1913 | raise service_error(service_error.server_config, |
|---|
| 1914 | "Bad key type (%s)" % self.ssh_type) |
|---|
| 1915 | |
|---|
| 1916 | user = req.get('user', None) |
|---|
| 1917 | if user == None: |
|---|
| 1918 | raise service_error(service_error.req, "No user") |
|---|
| 1919 | |
|---|
| 1920 | master = req.get('master', None) |
|---|
| 1921 | if not master: |
|---|
| 1922 | raise service_error(service_error.req, |
|---|
| 1923 | "No master testbed label") |
|---|
| 1924 | export_project = req.get('exportProject', None) |
|---|
| 1925 | if not export_project: |
|---|
| 1926 | raise service_error(service_error.req, "No export project") |
|---|
| 1927 | |
|---|
| 1928 | if self.splitter_url: |
|---|
| 1929 | self.log.debug("Calling remote splitter at %s" % \ |
|---|
| 1930 | self.splitter_url) |
|---|
| 1931 | split_data = self.remote_splitter(self.splitter_url, |
|---|
| 1932 | file_content, master) |
|---|
| 1933 | else: |
|---|
| 1934 | tclcmd = [self.tclsh, self.tcl_splitter, '-s', '-x', |
|---|
| 1935 | str(self.muxmax), '-m', master] |
|---|
| 1936 | |
|---|
| 1937 | if self.fedkit: |
|---|
| 1938 | tclcmd.append('-k') |
|---|
| 1939 | |
|---|
| 1940 | if self.gatewaykit: |
|---|
| 1941 | tclcmd.append('-K') |
|---|
| 1942 | |
|---|
| 1943 | tclcmd.extend([pid, gid, eid, tclfile]) |
|---|
| 1944 | |
|---|
| 1945 | self.log.debug("running local splitter %s", " ".join(tclcmd)) |
|---|
| 1946 | # This is just fantastic. As a side effect the parser copies |
|---|
| 1947 | # tb_compat.tcl into the current directory, so that directory |
|---|
| 1948 | # must be writable by the fedd user. Doing this in the |
|---|
| 1949 | # temporary subdir ensures this is the case. |
|---|
| 1950 | tclparser = Popen(tclcmd, stdout=PIPE, close_fds=True, |
|---|
| 1951 | cwd=tmpdir) |
|---|
| 1952 | split_data = tclparser.stdout |
|---|
| 1953 | |
|---|
| 1954 | allocated = { } # Testbeds we can access |
|---|
| 1955 | # Objects to parse the splitter output (defined above) |
|---|
| 1956 | parse_current_testbed = self.current_testbed(eid, tmpdir, |
|---|
| 1957 | self.fedkit, self.gatewaykit) |
|---|
| 1958 | parse_allbeds = self.allbeds(self.get_access) |
|---|
| 1959 | parse_gateways = self.gateways(eid, master, tmpdir, |
|---|
| 1960 | gw_pubkey_base, gw_secretkey_base, self.copy_file, |
|---|
| 1961 | self.fedkit) |
|---|
| 1962 | parse_vtopo = self.shunt_to_string("^#\s+Begin\s+Vtopo", |
|---|
| 1963 | "^#\s+End\s+Vtopo") |
|---|
| 1964 | parse_hostnames = self.shunt_to_file("^#\s+Begin\s+hostnames", |
|---|
| 1965 | "^#\s+End\s+hostnames", tmpdir + "/hosts") |
|---|
| 1966 | parse_tarfiles = self.shunt_to_list("^#\s+Begin\s+tarfiles", |
|---|
| 1967 | "^#\s+End\s+tarfiles") |
|---|
| 1968 | parse_rpms = self.shunt_to_list("^#\s+Begin\s+rpms", |
|---|
| 1969 | "^#\s+End\s+rpms") |
|---|
| 1970 | |
|---|
| 1971 | # Working on the split data |
|---|
| 1972 | for line in split_data: |
|---|
| 1973 | line = line.rstrip() |
|---|
| 1974 | if parse_current_testbed(line, master, allocated, tbparams): |
|---|
| 1975 | continue |
|---|
| 1976 | elif parse_allbeds(line, user, tbparams, master, export_project, |
|---|
| 1977 | access_user): |
|---|
| 1978 | continue |
|---|
| 1979 | elif parse_gateways(line, allocated, tbparams): |
|---|
| 1980 | continue |
|---|
| 1981 | elif parse_vtopo(line): |
|---|
| 1982 | continue |
|---|
| 1983 | elif parse_hostnames(line): |
|---|
| 1984 | continue |
|---|
| 1985 | elif parse_tarfiles(line): |
|---|
| 1986 | continue |
|---|
| 1987 | elif parse_rpms(line): |
|---|
| 1988 | continue |
|---|
| 1989 | else: |
|---|
| 1990 | raise service_error(service_error.internal, |
|---|
| 1991 | "Bad tcl parse? %s" % line) |
|---|
| 1992 | # Virtual topology and visualization |
|---|
| 1993 | vtopo = self.gentopo(parse_vtopo.str) |
|---|
| 1994 | if not vtopo: |
|---|
| 1995 | raise service_error(service_error.internal, |
|---|
| 1996 | "Failed to generate virtual topology") |
|---|
| 1997 | |
|---|
| 1998 | vis = self.genviz(vtopo) |
|---|
| 1999 | if not vis: |
|---|
| 2000 | raise service_error(service_error.internal, |
|---|
| 2001 | "Failed to generate visualization") |
|---|
| 2002 | |
|---|
| 2003 | |
|---|
| 2004 | # save federant information |
|---|
| 2005 | for k in allocated.keys(): |
|---|
| 2006 | tbparams[k]['federant'] = {\ |
|---|
| 2007 | 'name': [ { 'localname' : eid} ],\ |
|---|
| 2008 | 'emulab': tbparams[k]['emulab'],\ |
|---|
| 2009 | 'allocID' : tbparams[k]['allocID'],\ |
|---|
| 2010 | 'master' : k == master,\ |
|---|
| 2011 | } |
|---|
| 2012 | |
|---|
| 2013 | self.state_lock.acquire() |
|---|
| 2014 | self.state[eid]['vtopo'] = vtopo |
|---|
| 2015 | self.state[eid]['vis'] = vis |
|---|
| 2016 | self.state[expid]['federant'] = \ |
|---|
| 2017 | [ tbparams[tb]['federant'] for tb in tbparams.keys() \ |
|---|
| 2018 | if tbparams[tb].has_key('federant') ] |
|---|
| 2019 | if self.state_filename: self.write_state() |
|---|
| 2020 | self.state_lock.release() |
|---|
| 2021 | |
|---|
| 2022 | # Copy tarfiles and rpms needed at remote sites into a staging area |
|---|
| 2023 | try: |
|---|
| 2024 | if self.fedkit: |
|---|
| 2025 | for t in self.fedkit: |
|---|
| 2026 | parse_tarfiles.list.append(t[1]) |
|---|
| 2027 | if self.gatewaykit: |
|---|
| 2028 | for t in self.gatewaykit: |
|---|
| 2029 | parse_tarfiles.list.append(t[1]) |
|---|
| 2030 | for t in parse_tarfiles.list: |
|---|
| 2031 | if not os.path.exists("%s/tarfiles" % tmpdir): |
|---|
| 2032 | os.mkdir("%s/tarfiles" % tmpdir) |
|---|
| 2033 | self.copy_file(t, "%s/tarfiles/%s" % \ |
|---|
| 2034 | (tmpdir, os.path.basename(t))) |
|---|
| 2035 | for r in parse_rpms.list: |
|---|
| 2036 | if not os.path.exists("%s/rpms" % tmpdir): |
|---|
| 2037 | os.mkdir("%s/rpms" % tmpdir) |
|---|
| 2038 | self.copy_file(r, "%s/rpms/%s" % \ |
|---|
| 2039 | (tmpdir, os.path.basename(r))) |
|---|
| 2040 | # A null experiment file in case we need to create a remote |
|---|
| 2041 | # experiment from scratch |
|---|
| 2042 | f = open("%s/null.tcl" % tmpdir, "w") |
|---|
| 2043 | print >>f, """ |
|---|
| 2044 | set ns [new Simulator] |
|---|
| 2045 | source tb_compat.tcl |
|---|
| 2046 | |
|---|
| 2047 | set a [$ns node] |
|---|
| 2048 | |
|---|
| 2049 | $ns rtproto Session |
|---|
| 2050 | $ns run |
|---|
| 2051 | """ |
|---|
| 2052 | f.close() |
|---|
| 2053 | |
|---|
| 2054 | except IOError, e: |
|---|
| 2055 | raise service_error(service_error.internal, |
|---|
| 2056 | "Cannot stage tarfile/rpm: %s" % e.strerror) |
|---|
| 2057 | |
|---|
| 2058 | except service_error, e: |
|---|
| 2059 | # If something goes wrong in the parse (usually an access error) |
|---|
| 2060 | # clear the placeholder state. From here on out the code delays |
|---|
| 2061 | # exceptions. Failing at this point returns a fault to the remote |
|---|
| 2062 | # caller. |
|---|
| 2063 | self.state_lock.acquire() |
|---|
| 2064 | del self.state[eid] |
|---|
| 2065 | del self.state[expid] |
|---|
| 2066 | if self.state_filename: self.write_state() |
|---|
| 2067 | self.state_lock.release() |
|---|
| 2068 | raise e |
|---|
| 2069 | |
|---|
| 2070 | |
|---|
| 2071 | # Start the background swapper and return the starting state. From |
|---|
| 2072 | # here on out, the state will stick around a while. |
|---|
| 2073 | |
|---|
| 2074 | # Let users touch the state |
|---|
| 2075 | self.auth.set_attribute(fid, expid) |
|---|
| 2076 | self.auth.set_attribute(expid, expid) |
|---|
| 2077 | # Override fedids can manipulate state as well |
|---|
| 2078 | for o in self.overrides: |
|---|
| 2079 | self.auth.set_attribute(o, expid) |
|---|
| 2080 | |
|---|
| 2081 | # Create a logger that logs to the experiment's state object as well as |
|---|
| 2082 | # to the main log file. |
|---|
| 2083 | alloc_log = logging.getLogger('fedd.experiment_control.%s' % eid) |
|---|
| 2084 | h = logging.StreamHandler(self.list_log(self.state[eid]['log'])) |
|---|
| 2085 | # XXX: there should be a global one of these rather than repeating the |
|---|
| 2086 | # code. |
|---|
| 2087 | h.setFormatter(logging.Formatter("%(asctime)s %(name)s %(message)s", |
|---|
| 2088 | '%d %b %y %H:%M:%S')) |
|---|
| 2089 | alloc_log.addHandler(h) |
|---|
| 2090 | |
|---|
| 2091 | # Start a thread to do the resource allocation |
|---|
| 2092 | t = Thread(target=self.allocate_resources, |
|---|
| 2093 | args=(allocated, master, eid, expid, expcert, tbparams, |
|---|
| 2094 | tmpdir, alloc_log), |
|---|
| 2095 | name=eid) |
|---|
| 2096 | t.start() |
|---|
| 2097 | |
|---|
| 2098 | rv = { |
|---|
| 2099 | 'experimentID': [ |
|---|
| 2100 | {'localname' : eid }, { 'fedid': copy.copy(expid) } |
|---|
| 2101 | ], |
|---|
| 2102 | 'experimentStatus': 'starting', |
|---|
| 2103 | 'experimentAccess': { 'X509' : expcert } |
|---|
| 2104 | } |
|---|
| 2105 | |
|---|
| 2106 | return rv |
|---|
| 2107 | |
|---|
| 2108 | def get_experiment_fedid(self, key): |
|---|
| 2109 | """ |
|---|
| 2110 | find the fedid associated with the localname key in the state database. |
|---|
| 2111 | """ |
|---|
| 2112 | |
|---|
| 2113 | rv = None |
|---|
| 2114 | self.state_lock.acquire() |
|---|
| 2115 | if self.state.has_key(key): |
|---|
| 2116 | if isinstance(self.state[key], dict): |
|---|
| 2117 | try: |
|---|
| 2118 | kl = [ f['fedid'] for f in \ |
|---|
| 2119 | self.state[key]['experimentID']\ |
|---|
| 2120 | if f.has_key('fedid') ] |
|---|
| 2121 | except KeyError: |
|---|
| 2122 | self.state_lock.release() |
|---|
| 2123 | raise service_error(service_error.internal, |
|---|
| 2124 | "No fedid for experiment %s when getting "+\ |
|---|
| 2125 | "fedid(!?)" % key) |
|---|
| 2126 | if len(kl) == 1: |
|---|
| 2127 | rv = kl[0] |
|---|
| 2128 | else: |
|---|
| 2129 | self.state_lock.release() |
|---|
| 2130 | raise service_error(service_error.internal, |
|---|
| 2131 | "multiple fedids for experiment %s when " +\ |
|---|
| 2132 | "getting fedid(!?)" % key) |
|---|
| 2133 | else: |
|---|
| 2134 | self.state_lock.release() |
|---|
| 2135 | raise service_error(service_error.internal, |
|---|
| 2136 | "Unexpected state for %s" % key) |
|---|
| 2137 | self.state_lock.release() |
|---|
| 2138 | return rv |
|---|
| 2139 | |
|---|
| 2140 | def check_experiment_access(self, fid, key): |
|---|
| 2141 | """ |
|---|
| 2142 | Confirm that the fid has access to the experiment. Though a request |
|---|
| 2143 | may be made in terms of a local name, the access attribute is always |
|---|
| 2144 | the experiment's fedid. |
|---|
| 2145 | """ |
|---|
| 2146 | if not isinstance(key, fedid): |
|---|
| 2147 | key = self.get_experiment_fedid(key) |
|---|
| 2148 | |
|---|
| 2149 | if self.auth.check_attribute(fid, key): |
|---|
| 2150 | return True |
|---|
| 2151 | else: |
|---|
| 2152 | raise service_error(service_error.access, "Access Denied") |
|---|
| 2153 | |
|---|
| 2154 | |
|---|
| 2155 | |
|---|
| 2156 | def get_vtopo(self, req, fid): |
|---|
| 2157 | """ |
|---|
| 2158 | Return the stored virtual topology for this experiment |
|---|
| 2159 | """ |
|---|
| 2160 | rv = None |
|---|
| 2161 | state = None |
|---|
| 2162 | |
|---|
| 2163 | req = req.get('VtopoRequestBody', None) |
|---|
| 2164 | if not req: |
|---|
| 2165 | raise service_error(service_error.req, |
|---|
| 2166 | "Bad request format (no VtopoRequestBody)") |
|---|
| 2167 | exp = req.get('experiment', None) |
|---|
| 2168 | if exp: |
|---|
| 2169 | if exp.has_key('fedid'): |
|---|
| 2170 | key = exp['fedid'] |
|---|
| 2171 | keytype = "fedid" |
|---|
| 2172 | elif exp.has_key('localname'): |
|---|
| 2173 | key = exp['localname'] |
|---|
| 2174 | keytype = "localname" |
|---|
| 2175 | else: |
|---|
| 2176 | raise service_error(service_error.req, "Unknown lookup type") |
|---|
| 2177 | else: |
|---|
| 2178 | raise service_error(service_error.req, "No request?") |
|---|
| 2179 | |
|---|
| 2180 | self.check_experiment_access(fid, key) |
|---|
| 2181 | |
|---|
| 2182 | self.state_lock.acquire() |
|---|
| 2183 | if self.state.has_key(key): |
|---|
| 2184 | if self.state[key].has_key('vtopo'): |
|---|
| 2185 | rv = { 'experiment' : {keytype: key },\ |
|---|
| 2186 | 'vtopo': self.state[key]['vtopo'],\ |
|---|
| 2187 | } |
|---|
| 2188 | else: |
|---|
| 2189 | state = self.state[key]['experimentStatus'] |
|---|
| 2190 | self.state_lock.release() |
|---|
| 2191 | |
|---|
| 2192 | if rv: return rv |
|---|
| 2193 | else: |
|---|
| 2194 | if state: |
|---|
| 2195 | raise service_error(service_error.partial, |
|---|
| 2196 | "Not ready: %s" % state) |
|---|
| 2197 | else: |
|---|
| 2198 | raise service_error(service_error.req, "No such experiment") |
|---|
| 2199 | |
|---|
| 2200 | def get_vis(self, req, fid): |
|---|
| 2201 | """ |
|---|
| 2202 | Return the stored visualization for this experiment |
|---|
| 2203 | """ |
|---|
| 2204 | rv = None |
|---|
| 2205 | state = None |
|---|
| 2206 | |
|---|
| 2207 | req = req.get('VisRequestBody', None) |
|---|
| 2208 | if not req: |
|---|
| 2209 | raise service_error(service_error.req, |
|---|
| 2210 | "Bad request format (no VisRequestBody)") |
|---|
| 2211 | exp = req.get('experiment', None) |
|---|
| 2212 | if exp: |
|---|
| 2213 | if exp.has_key('fedid'): |
|---|
| 2214 | key = exp['fedid'] |
|---|
| 2215 | keytype = "fedid" |
|---|
| 2216 | elif exp.has_key('localname'): |
|---|
| 2217 | key = exp['localname'] |
|---|
| 2218 | keytype = "localname" |
|---|
| 2219 | else: |
|---|
| 2220 | raise service_error(service_error.req, "Unknown lookup type") |
|---|
| 2221 | else: |
|---|
| 2222 | raise service_error(service_error.req, "No request?") |
|---|
| 2223 | |
|---|
| 2224 | self.check_experiment_access(fid, key) |
|---|
| 2225 | |
|---|
| 2226 | self.state_lock.acquire() |
|---|
| 2227 | if self.state.has_key(key): |
|---|
| 2228 | if self.state[key].has_key('vis'): |
|---|
| 2229 | rv = { 'experiment' : {keytype: key },\ |
|---|
| 2230 | 'vis': self.state[key]['vis'],\ |
|---|
| 2231 | } |
|---|
| 2232 | else: |
|---|
| 2233 | state = self.state[key]['experimentStatus'] |
|---|
| 2234 | self.state_lock.release() |
|---|
| 2235 | |
|---|
| 2236 | if rv: return rv |
|---|
| 2237 | else: |
|---|
| 2238 | if state: |
|---|
| 2239 | raise service_error(service_error.partial, |
|---|
| 2240 | "Not ready: %s" % state) |
|---|
| 2241 | else: |
|---|
| 2242 | raise service_error(service_error.req, "No such experiment") |
|---|
| 2243 | |
|---|
| 2244 | def clean_info_response(self, rv): |
|---|
| 2245 | """ |
|---|
| 2246 | Remove the information in the experiment's state object that is not in |
|---|
| 2247 | the info response. |
|---|
| 2248 | """ |
|---|
| 2249 | # Remove the owner info (should always be there, but...) |
|---|
| 2250 | if rv.has_key('owner'): del rv['owner'] |
|---|
| 2251 | |
|---|
| 2252 | # Convert the log into the allocationLog parameter and remove the |
|---|
| 2253 | # log entry (with defensive programming) |
|---|
| 2254 | if rv.has_key('log'): |
|---|
| 2255 | rv['allocationLog'] = "".join(rv['log']) |
|---|
| 2256 | del rv['log'] |
|---|
| 2257 | else: |
|---|
| 2258 | rv['allocationLog'] = "" |
|---|
| 2259 | |
|---|
| 2260 | if rv['experimentStatus'] != 'active': |
|---|
| 2261 | if rv.has_key('federant'): del rv['federant'] |
|---|
| 2262 | else: |
|---|
| 2263 | # remove the allocationID info from each federant |
|---|
| 2264 | for f in rv.get('federant', []): |
|---|
| 2265 | if f.has_key('allocID'): del f['allocID'] |
|---|
| 2266 | return rv |
|---|
| 2267 | |
|---|
| 2268 | def get_info(self, req, fid): |
|---|
| 2269 | """ |
|---|
| 2270 | Return all the stored info about this experiment |
|---|
| 2271 | """ |
|---|
| 2272 | rv = None |
|---|
| 2273 | |
|---|
| 2274 | req = req.get('InfoRequestBody', None) |
|---|
| 2275 | if not req: |
|---|
| 2276 | raise service_error(service_error.req, |
|---|
| 2277 | "Bad request format (no InfoRequestBody)") |
|---|
| 2278 | exp = req.get('experiment', None) |
|---|
| 2279 | if exp: |
|---|
| 2280 | if exp.has_key('fedid'): |
|---|
| 2281 | key = exp['fedid'] |
|---|
| 2282 | keytype = "fedid" |
|---|
| 2283 | elif exp.has_key('localname'): |
|---|
| 2284 | key = exp['localname'] |
|---|
| 2285 | keytype = "localname" |
|---|
| 2286 | else: |
|---|
| 2287 | raise service_error(service_error.req, "Unknown lookup type") |
|---|
| 2288 | else: |
|---|
| 2289 | raise service_error(service_error.req, "No request?") |
|---|
| 2290 | |
|---|
| 2291 | self.check_experiment_access(fid, key) |
|---|
| 2292 | |
|---|
| 2293 | # The state may be massaged by the service function that called |
|---|
| 2294 | # get_info (e.g., encoded for XMLRPC transport) so send a copy of the |
|---|
| 2295 | # state. |
|---|
| 2296 | self.state_lock.acquire() |
|---|
| 2297 | if self.state.has_key(key): |
|---|
| 2298 | rv = copy.deepcopy(self.state[key]) |
|---|
| 2299 | self.state_lock.release() |
|---|
| 2300 | |
|---|
| 2301 | if rv: |
|---|
| 2302 | return self.clean_info_response(rv) |
|---|
| 2303 | else: |
|---|
| 2304 | raise service_error(service_error.req, "No such experiment") |
|---|
| 2305 | |
|---|
| 2306 | def get_multi_info(self, req, fid): |
|---|
| 2307 | """ |
|---|
| 2308 | Return all the stored info that this fedid can access |
|---|
| 2309 | """ |
|---|
| 2310 | rv = { 'info': [ ] } |
|---|
| 2311 | |
|---|
| 2312 | self.state_lock.acquire() |
|---|
| 2313 | for key in [ k for k in self.state.keys() if isinstance(k, fedid)]: |
|---|
| 2314 | try: |
|---|
| 2315 | self.check_experiment_access(fid, key) |
|---|
| 2316 | except service_error, e: |
|---|
| 2317 | if e.code == service_error.access: |
|---|
| 2318 | continue |
|---|
| 2319 | else: |
|---|
| 2320 | self.state_lock.release() |
|---|
| 2321 | raise e |
|---|
| 2322 | |
|---|
| 2323 | if self.state.has_key(key): |
|---|
| 2324 | e = copy.deepcopy(self.state[key]) |
|---|
| 2325 | e = self.clean_info_response(e) |
|---|
| 2326 | rv['info'].append(e) |
|---|
| 2327 | self.state_lock.release() |
|---|
| 2328 | return rv |
|---|
| 2329 | |
|---|
| 2330 | |
|---|
| 2331 | def terminate_experiment(self, req, fid): |
|---|
| 2332 | """ |
|---|
| 2333 | Swap this experiment out on the federants and delete the shared |
|---|
| 2334 | information |
|---|
| 2335 | """ |
|---|
| 2336 | tbparams = { } |
|---|
| 2337 | req = req.get('TerminateRequestBody', None) |
|---|
| 2338 | if not req: |
|---|
| 2339 | raise service_error(service_error.req, |
|---|
| 2340 | "Bad request format (no TerminateRequestBody)") |
|---|
| 2341 | force = req.get('force', False) |
|---|
| 2342 | exp = req.get('experiment', None) |
|---|
| 2343 | if exp: |
|---|
| 2344 | if exp.has_key('fedid'): |
|---|
| 2345 | key = exp['fedid'] |
|---|
| 2346 | keytype = "fedid" |
|---|
| 2347 | elif exp.has_key('localname'): |
|---|
| 2348 | key = exp['localname'] |
|---|
| 2349 | keytype = "localname" |
|---|
| 2350 | else: |
|---|
| 2351 | raise service_error(service_error.req, "Unknown lookup type") |
|---|
| 2352 | else: |
|---|
| 2353 | raise service_error(service_error.req, "No request?") |
|---|
| 2354 | |
|---|
| 2355 | self.check_experiment_access(fid, key) |
|---|
| 2356 | |
|---|
| 2357 | dealloc_list = [ ] |
|---|
| 2358 | |
|---|
| 2359 | |
|---|
| 2360 | # Create a logger that logs to the dealloc_list as well as to the main |
|---|
| 2361 | # log file. |
|---|
| 2362 | dealloc_log = logging.getLogger('fedd.experiment_control.%s' % key) |
|---|
| 2363 | h = logging.StreamHandler(self.list_log(dealloc_list)) |
|---|
| 2364 | # XXX: there should be a global one of these rather than repeating the |
|---|
| 2365 | # code. |
|---|
| 2366 | h.setFormatter(logging.Formatter("%(asctime)s %(name)s %(message)s", |
|---|
| 2367 | '%d %b %y %H:%M:%S')) |
|---|
| 2368 | dealloc_log.addHandler(h) |
|---|
| 2369 | |
|---|
| 2370 | self.state_lock.acquire() |
|---|
| 2371 | fed_exp = self.state.get(key, None) |
|---|
| 2372 | |
|---|
| 2373 | if fed_exp: |
|---|
| 2374 | # This branch of the conditional holds the lock to generate a |
|---|
| 2375 | # consistent temporary tbparams variable to deallocate experiments. |
|---|
| 2376 | # It releases the lock to do the deallocations and reacquires it to |
|---|
| 2377 | # remove the experiment state when the termination is complete. |
|---|
| 2378 | |
|---|
| 2379 | # First make sure that the experiment creation is complete. |
|---|
| 2380 | status = fed_exp.get('experimentStatus', None) |
|---|
| 2381 | |
|---|
| 2382 | if status: |
|---|
| 2383 | if status in ('starting', 'terminating'): |
|---|
| 2384 | if not force: |
|---|
| 2385 | self.state_lock.release() |
|---|
| 2386 | raise service_error(service_error.partial, |
|---|
| 2387 | 'Experiment still being created or destroyed') |
|---|
| 2388 | else: |
|---|
| 2389 | self.log.warning('Experiment in %s state ' % status + \ |
|---|
| 2390 | 'being terminated by force.') |
|---|
| 2391 | else: |
|---|
| 2392 | # No status??? trouble |
|---|
| 2393 | self.state_lock.release() |
|---|
| 2394 | raise service_error(service_error.internal, |
|---|
| 2395 | "Experiment has no status!?") |
|---|
| 2396 | |
|---|
| 2397 | ids = [] |
|---|
| 2398 | # experimentID is a list of dicts that are self-describing |
|---|
| 2399 | # identifiers. This finds all the fedids and localnames - the |
|---|
| 2400 | # keys of self.state - and puts them into ids. |
|---|
| 2401 | for id in fed_exp.get('experimentID', []): |
|---|
| 2402 | if id.has_key('fedid'): ids.append(id['fedid']) |
|---|
| 2403 | if id.has_key('localname'): ids.append(id['localname']) |
|---|
| 2404 | |
|---|
| 2405 | # Construct enough of the tbparams to make the stop_segment calls |
|---|
| 2406 | # work |
|---|
| 2407 | for fed in fed_exp.get('federant', []): |
|---|
| 2408 | try: |
|---|
| 2409 | for e in fed['name']: |
|---|
| 2410 | eid = e.get('localname', None) |
|---|
| 2411 | if eid: break |
|---|
| 2412 | else: |
|---|
| 2413 | continue |
|---|
| 2414 | |
|---|
| 2415 | p = fed['emulab']['project'] |
|---|
| 2416 | |
|---|
| 2417 | project = p['name']['localname'] |
|---|
| 2418 | tb = p['testbed']['localname'] |
|---|
| 2419 | user = p['user'][0]['userID']['localname'] |
|---|
| 2420 | |
|---|
| 2421 | domain = fed['emulab']['domain'] |
|---|
| 2422 | host = fed['emulab']['ops'] |
|---|
| 2423 | aid = fed['allocID'] |
|---|
| 2424 | except KeyError, e: |
|---|
| 2425 | continue |
|---|
| 2426 | tbparams[tb] = {\ |
|---|
| 2427 | 'user': user,\ |
|---|
| 2428 | 'domain': domain,\ |
|---|
| 2429 | 'project': project,\ |
|---|
| 2430 | 'host': host,\ |
|---|
| 2431 | 'eid': eid,\ |
|---|
| 2432 | 'aid': aid,\ |
|---|
| 2433 | } |
|---|
| 2434 | fed_exp['experimentStatus'] = 'terminating' |
|---|
| 2435 | if self.state_filename: self.write_state() |
|---|
| 2436 | self.state_lock.release() |
|---|
| 2437 | |
|---|
| 2438 | # Stop everyone. NB, wait_for_all waits until a thread starts and |
|---|
| 2439 | # then completes, so we can't wait if nothing starts. So, no |
|---|
| 2440 | # tbparams, no start. |
|---|
| 2441 | if len(tbparams) > 0: |
|---|
| 2442 | thread_pool = self.thread_pool(self.nthreads) |
|---|
| 2443 | for tb in tbparams.keys(): |
|---|
| 2444 | # Create and start a thread to stop the segment |
|---|
| 2445 | thread_pool.wait_for_slot() |
|---|
| 2446 | t = self.pooled_thread(\ |
|---|
| 2447 | target=self.stop_segment(log=dealloc_log, |
|---|
| 2448 | keyfile=self.ssh_privkey_file, debug=self.debug), |
|---|
| 2449 | args=(tb, tbparams[tb]['eid'], tbparams), name=tb, |
|---|
| 2450 | pdata=thread_pool, trace_file=self.trace_file) |
|---|
| 2451 | t.start() |
|---|
| 2452 | # Wait for completions |
|---|
| 2453 | thread_pool.wait_for_all_done() |
|---|
| 2454 | |
|---|
| 2455 | # release the allocations (failed experiments have done this |
|---|
| 2456 | # already, and starting experiments may be in odd states, so we |
|---|
| 2457 | # ignore errors releasing those allocations |
|---|
| 2458 | try: |
|---|
| 2459 | for tb in tbparams.keys(): |
|---|
| 2460 | self.release_access(tb, tbparams[tb]['aid']) |
|---|
| 2461 | except service_error, e: |
|---|
| 2462 | if status != 'failed' and not force: |
|---|
| 2463 | raise e |
|---|
| 2464 | |
|---|
| 2465 | # Remove the terminated experiment |
|---|
| 2466 | self.state_lock.acquire() |
|---|
| 2467 | for id in ids: |
|---|
| 2468 | if self.state.has_key(id): del self.state[id] |
|---|
| 2469 | |
|---|
| 2470 | if self.state_filename: self.write_state() |
|---|
| 2471 | self.state_lock.release() |
|---|
| 2472 | |
|---|
| 2473 | return { |
|---|
| 2474 | 'experiment': exp , |
|---|
| 2475 | 'deallocationLog': "".join(dealloc_list), |
|---|
| 2476 | } |
|---|
| 2477 | else: |
|---|
| 2478 | # Don't forget to release the lock |
|---|
| 2479 | self.state_lock.release() |
|---|
| 2480 | raise service_error(service_error.req, "No saved state") |
|---|
