| 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 Lock, Thread, Condition |
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| 21 | from subprocess import call, Popen, PIPE |
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| 22 | |
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| 23 | from urlparse import urlparse |
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| 24 | from urllib2 import urlopen |
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| 25 | |
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| 26 | from util import * |
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| 27 | from fedid import fedid, generate_fedid |
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| 28 | from remote_service import xmlrpc_handler, soap_handler, service_caller |
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| 29 | from service_error import service_error |
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| 30 | from synch_store import synch_store |
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| 31 | from experiment_partition import experiment_partition |
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| 32 | |
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| 33 | import topdl |
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| 34 | import list_log |
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| 35 | from ip_allocator import ip_allocator |
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| 36 | from ip_addr import ip_addr |
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| 37 | |
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| 38 | |
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| 39 | class nullHandler(logging.Handler): |
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| 40 | def emit(self, record): pass |
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| 41 | |
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| 42 | fl = logging.getLogger("fedd.experiment_control") |
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| 43 | fl.addHandler(nullHandler()) |
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| 44 | |
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| 45 | class experiment_control_local: |
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| 46 | """ |
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| 47 | Control of experiments that this system can directly access. |
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| 48 | |
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| 49 | Includes experiment creation, termination and information dissemination. |
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| 50 | Thred safe. |
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| 51 | """ |
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| 52 | |
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| 53 | class ssh_cmd_timeout(RuntimeError): pass |
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| 54 | |
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| 55 | class thread_pool: |
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| 56 | """ |
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| 57 | A class to keep track of a set of threads all invoked for the same |
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| 58 | task. Manages the mutual exclusion of the states. |
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| 59 | """ |
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| 60 | def __init__(self, nthreads): |
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| 61 | """ |
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| 62 | Start a pool. |
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| 63 | """ |
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| 64 | self.changed = Condition() |
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| 65 | self.started = 0 |
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| 66 | self.terminated = 0 |
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| 67 | self.nthreads = nthreads |
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| 68 | |
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| 69 | def acquire(self): |
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| 70 | """ |
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| 71 | Get the pool's lock. |
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| 72 | """ |
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| 73 | self.changed.acquire() |
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| 74 | |
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| 75 | def release(self): |
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| 76 | """ |
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| 77 | Release the pool's lock. |
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| 78 | """ |
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| 79 | self.changed.release() |
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| 80 | |
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| 81 | def wait(self, timeout = None): |
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| 82 | """ |
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| 83 | Wait for a pool thread to start or stop. |
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| 84 | """ |
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| 85 | self.changed.wait(timeout) |
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| 86 | |
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| 87 | def start(self): |
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| 88 | """ |
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| 89 | Called by a pool thread to report starting. |
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| 90 | """ |
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| 91 | self.changed.acquire() |
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| 92 | self.started += 1 |
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| 93 | self.changed.notifyAll() |
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| 94 | self.changed.release() |
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| 95 | |
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| 96 | def terminate(self): |
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| 97 | """ |
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| 98 | Called by a pool thread to report finishing. |
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| 99 | """ |
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| 100 | self.changed.acquire() |
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| 101 | self.terminated += 1 |
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| 102 | self.changed.notifyAll() |
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| 103 | self.changed.release() |
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| 104 | |
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| 105 | def clear(self): |
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| 106 | """ |
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| 107 | Clear all pool data. |
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| 108 | """ |
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| 109 | self.changed.acquire() |
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| 110 | self.started = 0 |
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| 111 | self.terminated =0 |
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| 112 | self.changed.notifyAll() |
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| 113 | self.changed.release() |
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| 114 | |
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| 115 | def wait_for_slot(self): |
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| 116 | """ |
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| 117 | Wait until we have a free slot to start another pooled thread |
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| 118 | """ |
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| 119 | self.acquire() |
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| 120 | while self.started - self.terminated >= self.nthreads: |
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| 121 | self.wait() |
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| 122 | self.release() |
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| 123 | |
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| 124 | def wait_for_all_done(self, timeout=None): |
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| 125 | """ |
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| 126 | Wait until all active threads finish (and at least one has |
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| 127 | started). If a timeout is given, return after waiting that long |
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| 128 | for termination. If all threads are done (and one has started in |
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| 129 | the since the last clear()) return True, otherwise False. |
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| 130 | """ |
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| 131 | if timeout: |
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| 132 | deadline = time.time() + timeout |
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| 133 | self.acquire() |
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| 134 | while self.started == 0 or self.started > self.terminated: |
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| 135 | self.wait(timeout) |
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| 136 | if timeout: |
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| 137 | if time.time() > deadline: |
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| 138 | break |
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| 139 | timeout = deadline - time.time() |
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| 140 | self.release() |
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| 141 | return not (self.started == 0 or self.started > self.terminated) |
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| 142 | |
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| 143 | class pooled_thread(Thread): |
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| 144 | """ |
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| 145 | One of a set of threads dedicated to a specific task. Uses the |
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| 146 | thread_pool class above for coordination. |
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| 147 | """ |
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| 148 | def __init__(self, group=None, target=None, name=None, args=(), |
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| 149 | kwargs={}, pdata=None, trace_file=None): |
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| 150 | Thread.__init__(self, group, target, name, args, kwargs) |
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| 151 | self.rv = None # Return value of the ops in this thread |
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| 152 | self.exception = None # Exception that terminated this thread |
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| 153 | self.target=target # Target function to run on start() |
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| 154 | self.args = args # Args to pass to target |
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| 155 | self.kwargs = kwargs # Additional kw args |
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| 156 | self.pdata = pdata # thread_pool for this class |
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| 157 | # Logger for this thread |
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| 158 | self.log = logging.getLogger("fedd.experiment_control") |
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| 159 | |
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| 160 | def run(self): |
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| 161 | """ |
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| 162 | Emulate Thread.run, except add pool data manipulation and error |
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| 163 | logging. |
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| 164 | """ |
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| 165 | if self.pdata: |
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| 166 | self.pdata.start() |
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| 167 | |
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| 168 | if self.target: |
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| 169 | try: |
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| 170 | self.rv = self.target(*self.args, **self.kwargs) |
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| 171 | except service_error, s: |
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| 172 | self.exception = s |
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| 173 | self.log.error("Thread exception: %s %s" % \ |
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| 174 | (s.code_string(), s.desc)) |
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| 175 | except: |
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| 176 | self.exception = sys.exc_info()[1] |
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| 177 | self.log.error(("Unexpected thread exception: %s" +\ |
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| 178 | "Trace %s") % (self.exception,\ |
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| 179 | traceback.format_exc())) |
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| 180 | if self.pdata: |
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| 181 | self.pdata.terminate() |
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| 182 | |
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| 183 | call_RequestAccess = service_caller('RequestAccess') |
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| 184 | call_ReleaseAccess = service_caller('ReleaseAccess') |
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| 185 | call_StartSegment = service_caller('StartSegment') |
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| 186 | call_TerminateSegment = service_caller('TerminateSegment') |
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| 187 | call_Ns2Topdl = service_caller('Ns2Topdl') |
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| 188 | |
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| 189 | def __init__(self, config=None, auth=None): |
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| 190 | """ |
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| 191 | Intialize the various attributes, most from the config object |
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| 192 | """ |
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| 193 | |
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| 194 | def parse_tarfile_list(tf): |
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| 195 | """ |
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| 196 | Parse a tarfile list from the configuration. This is a set of |
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| 197 | paths and tarfiles separated by spaces. |
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| 198 | """ |
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| 199 | rv = [ ] |
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| 200 | if tf is not None: |
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| 201 | tl = tf.split() |
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| 202 | while len(tl) > 1: |
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| 203 | p, t = tl[0:2] |
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| 204 | del tl[0:2] |
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| 205 | rv.append((p, t)) |
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| 206 | return rv |
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| 207 | |
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| 208 | self.thread_with_rv = experiment_control_local.pooled_thread |
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| 209 | self.thread_pool = experiment_control_local.thread_pool |
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| 210 | self.list_log = list_log.list_log |
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| 211 | |
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| 212 | self.cert_file = config.get("experiment_control", "cert_file") |
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| 213 | if self.cert_file: |
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| 214 | self.cert_pwd = config.get("experiment_control", "cert_pwd") |
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| 215 | else: |
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| 216 | self.cert_file = config.get("globals", "cert_file") |
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| 217 | self.cert_pwd = config.get("globals", "cert_pwd") |
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| 218 | |
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| 219 | self.trusted_certs = config.get("experiment_control", "trusted_certs") \ |
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| 220 | or config.get("globals", "trusted_certs") |
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| 221 | |
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| 222 | self.repodir = config.get("experiment_control", "repodir") |
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| 223 | self.repo_url = config.get("experiment_control", "repo_url", |
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| 224 | "https://users.isi.deterlab.net:23235"); |
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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 = 10 |
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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.cleanup = not config.getboolean("experiment_control", |
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| 240 | "leave_tmpfiles") |
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| 241 | self.state_filename = config.get("experiment_control", |
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| 242 | "experiment_state") |
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| 243 | self.store_filename = config.get("experiment_control", |
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| 244 | "synch_store") |
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| 245 | self.store_url = config.get("experiment_control", "store_url") |
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| 246 | self.splitter_url = config.get("experiment_control", "ns2topdl_uri") |
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| 247 | self.fedkit = parse_tarfile_list(\ |
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| 248 | config.get("experiment_control", "fedkit")) |
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| 249 | self.gatewaykit = parse_tarfile_list(\ |
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| 250 | config.get("experiment_control", "gatewaykit")) |
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| 251 | accessdb_file = config.get("experiment_control", "accessdb") |
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| 252 | |
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| 253 | self.ssh_pubkey_file = config.get("experiment_control", |
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| 254 | "ssh_pubkey_file") |
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| 255 | self.ssh_privkey_file = config.get("experiment_control", |
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| 256 | "ssh_privkey_file") |
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| 257 | # NB for internal master/slave ops, not experiment setup |
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| 258 | self.ssh_type = config.get("experiment_control", "sshkeytype", "rsa") |
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| 259 | |
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| 260 | self.overrides = set([]) |
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| 261 | ovr = config.get('experiment_control', 'overrides') |
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| 262 | if ovr: |
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| 263 | for o in ovr.split(","): |
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| 264 | o = o.strip() |
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| 265 | if o.startswith('fedid:'): o = o[len('fedid:'):] |
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| 266 | self.overrides.add(fedid(hexstr=o)) |
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| 267 | |
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| 268 | self.state = { } |
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| 269 | self.state_lock = Lock() |
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| 270 | self.tclsh = "/usr/local/bin/otclsh" |
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| 271 | self.tcl_splitter = config.get("ns2topdl", "tcl_splitter") or \ |
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| 272 | config.get("experiment_control", "tcl_splitter", |
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| 273 | "/usr/testbed/lib/ns2ir/parse.tcl") |
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| 274 | mapdb_file = config.get("experiment_control", "mapdb") |
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| 275 | self.trace_file = sys.stderr |
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| 276 | |
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| 277 | self.def_expstart = \ |
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| 278 | "sudo -H /bin/sh /usr/local/federation/bin/federate.sh >& " +\ |
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| 279 | "/tmp/federate"; |
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| 280 | self.def_mexpstart = "sudo -H /usr/local/federation/bin/make_hosts " +\ |
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| 281 | "FEDDIR/hosts"; |
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| 282 | self.def_gwstart = \ |
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| 283 | "sudo -H /usr/local/federation/bin/fed-tun.pl -f GWCONF>& " +\ |
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| 284 | "/tmp/bridge.log"; |
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| 285 | self.def_mgwstart = \ |
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| 286 | "sudo -H /usr/local/federation/bin/fed-tun.pl -f GWCONF >& " +\ |
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| 287 | "/tmp/bridge.log"; |
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| 288 | self.def_gwimage = "FBSD61-TUNNEL2"; |
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| 289 | self.def_gwtype = "pc"; |
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| 290 | self.local_access = { } |
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| 291 | |
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| 292 | if auth: |
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| 293 | self.auth = auth |
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| 294 | else: |
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| 295 | self.log.error(\ |
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| 296 | "[access]: No authorizer initialized, creating local one.") |
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| 297 | auth = authorizer() |
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| 298 | |
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| 299 | |
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| 300 | if self.ssh_pubkey_file: |
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| 301 | try: |
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| 302 | f = open(self.ssh_pubkey_file, 'r') |
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| 303 | self.ssh_pubkey = f.read() |
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| 304 | f.close() |
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| 305 | except IOError: |
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| 306 | raise service_error(service_error.internal, |
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| 307 | "Cannot read sshpubkey") |
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| 308 | else: |
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| 309 | raise service_error(service_error.internal, |
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| 310 | "No SSH public key file?") |
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| 311 | |
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| 312 | if not self.ssh_privkey_file: |
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| 313 | raise service_error(service_error.internal, |
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| 314 | "No SSH public key file?") |
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| 315 | |
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| 316 | |
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| 317 | if mapdb_file: |
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| 318 | self.read_mapdb(mapdb_file) |
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| 319 | else: |
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| 320 | self.log.warn("[experiment_control] No testbed map, using defaults") |
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| 321 | self.tbmap = { |
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| 322 | 'deter':'https://users.isi.deterlab.net:23235', |
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| 323 | 'emulab':'https://users.isi.deterlab.net:23236', |
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| 324 | 'ucb':'https://users.isi.deterlab.net:23237', |
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| 325 | } |
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| 326 | |
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| 327 | if accessdb_file: |
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| 328 | self.read_accessdb(accessdb_file) |
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| 329 | else: |
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| 330 | raise service_error(service_error.internal, |
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| 331 | "No accessdb specified in config") |
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| 332 | |
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| 333 | # Grab saved state. OK to do this w/o locking because it's read only |
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| 334 | # and only one thread should be in existence that can see self.state at |
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| 335 | # this point. |
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| 336 | if self.state_filename: |
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| 337 | self.read_state() |
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| 338 | |
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| 339 | if self.store_filename: |
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| 340 | self.read_store() |
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| 341 | else: |
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| 342 | self.log.warning("No saved synch store") |
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| 343 | self.synch_store = synch_store |
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| 344 | |
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| 345 | # Dispatch tables |
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| 346 | self.soap_services = {\ |
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| 347 | 'New': soap_handler('New', self.new_experiment), |
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| 348 | 'Create': soap_handler('Create', self.create_experiment), |
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| 349 | 'Vtopo': soap_handler('Vtopo', self.get_vtopo), |
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| 350 | 'Vis': soap_handler('Vis', self.get_vis), |
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| 351 | 'Info': soap_handler('Info', self.get_info), |
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| 352 | 'MultiInfo': soap_handler('MultiInfo', self.get_multi_info), |
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| 353 | 'Terminate': soap_handler('Terminate', |
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| 354 | self.terminate_experiment), |
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| 355 | 'GetValue': soap_handler('GetValue', self.GetValue), |
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| 356 | 'SetValue': soap_handler('SetValue', self.SetValue), |
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| 357 | } |
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| 358 | |
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| 359 | self.xmlrpc_services = {\ |
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| 360 | 'New': xmlrpc_handler('New', self.new_experiment), |
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| 361 | 'Create': xmlrpc_handler('Create', self.create_experiment), |
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| 362 | 'Vtopo': xmlrpc_handler('Vtopo', self.get_vtopo), |
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| 363 | 'Vis': xmlrpc_handler('Vis', self.get_vis), |
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| 364 | 'Info': xmlrpc_handler('Info', self.get_info), |
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| 365 | 'MultiInfo': xmlrpc_handler('MultiInfo', self.get_multi_info), |
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| 366 | 'Terminate': xmlrpc_handler('Terminate', |
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| 367 | self.terminate_experiment), |
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| 368 | 'GetValue': xmlrpc_handler('GetValue', self.GetValue), |
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| 369 | 'SetValue': xmlrpc_handler('SetValue', self.SetValue), |
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| 370 | } |
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| 371 | |
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| 372 | # Call while holding self.state_lock |
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| 373 | def write_state(self): |
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| 374 | """ |
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| 375 | Write a new copy of experiment state after copying the existing state |
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| 376 | to a backup. |
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| 377 | |
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| 378 | State format is a simple pickling of the state dictionary. |
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| 379 | """ |
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| 380 | if os.access(self.state_filename, os.W_OK): |
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| 381 | copy_file(self.state_filename, \ |
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| 382 | "%s.bak" % self.state_filename) |
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| 383 | try: |
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| 384 | f = open(self.state_filename, 'w') |
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| 385 | pickle.dump(self.state, f) |
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| 386 | except IOError, e: |
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| 387 | self.log.error("Can't write file %s: %s" % \ |
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| 388 | (self.state_filename, e)) |
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| 389 | except pickle.PicklingError, e: |
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| 390 | self.log.error("Pickling problem: %s" % e) |
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| 391 | except TypeError, e: |
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| 392 | self.log.error("Pickling problem (TypeError): %s" % e) |
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| 393 | |
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| 394 | @staticmethod |
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| 395 | def get_alloc_ids(state): |
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| 396 | """ |
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| 397 | Pull the fedids of the identifiers of each allocation from the |
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| 398 | state. Again, a dict dive that's best isolated. |
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| 399 | |
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| 400 | Used by read_store and read state |
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| 401 | """ |
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| 402 | |
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| 403 | return [ f['allocID']['fedid'] |
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| 404 | for f in state.get('federant',[]) \ |
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| 405 | if f.has_key('allocID') and \ |
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| 406 | f['allocID'].has_key('fedid')] |
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| 407 | |
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| 408 | # Call while holding self.state_lock |
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| 409 | def read_state(self): |
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| 410 | """ |
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| 411 | Read a new copy of experiment state. Old state is overwritten. |
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| 412 | |
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| 413 | State format is a simple pickling of the state dictionary. |
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| 414 | """ |
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| 415 | |
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| 416 | def get_experiment_id(state): |
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| 417 | """ |
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| 418 | Pull the fedid experimentID out of the saved state. This is kind |
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| 419 | of a gross walk through the dict. |
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| 420 | """ |
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| 421 | |
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| 422 | if state.has_key('experimentID'): |
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| 423 | for e in state['experimentID']: |
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| 424 | if e.has_key('fedid'): |
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| 425 | return e['fedid'] |
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| 426 | else: |
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| 427 | return None |
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| 428 | else: |
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| 429 | return None |
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| 430 | |
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| 431 | try: |
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| 432 | f = open(self.state_filename, "r") |
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| 433 | self.state = pickle.load(f) |
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| 434 | self.log.debug("[read_state]: Read state from %s" % \ |
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| 435 | self.state_filename) |
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| 436 | except IOError, e: |
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| 437 | self.log.warning("[read_state]: No saved state: Can't open %s: %s"\ |
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| 438 | % (self.state_filename, e)) |
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| 439 | except pickle.UnpicklingError, e: |
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| 440 | self.log.warning(("[read_state]: No saved state: " + \ |
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| 441 | "Unpickling failed: %s") % e) |
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| 442 | |
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| 443 | for s in self.state.values(): |
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| 444 | try: |
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| 445 | |
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| 446 | eid = get_experiment_id(s) |
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| 447 | if eid : |
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| 448 | # Give the owner rights to the experiment |
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| 449 | self.auth.set_attribute(s['owner'], eid) |
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| 450 | # And holders of the eid as well |
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| 451 | self.auth.set_attribute(eid, eid) |
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| 452 | # allow overrides to control experiments as well |
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| 453 | for o in self.overrides: |
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| 454 | self.auth.set_attribute(o, eid) |
|---|
| 455 | # Set permissions to allow reading of the software repo, if |
|---|
| 456 | # any, as well. |
|---|
| 457 | for a in self.get_alloc_ids(s): |
|---|
| 458 | self.auth.set_attribute(a, 'repo/%s' % eid) |
|---|
| 459 | else: |
|---|
| 460 | raise KeyError("No experiment id") |
|---|
| 461 | except KeyError, e: |
|---|
| 462 | self.log.warning("[read_state]: State ownership or identity " +\ |
|---|
| 463 | "misformatted in %s: %s" % (self.state_filename, e)) |
|---|
| 464 | |
|---|
| 465 | |
|---|
| 466 | def read_accessdb(self, accessdb_file): |
|---|
| 467 | """ |
|---|
| 468 | Read the mapping from fedids that can create experiments to their name |
|---|
| 469 | in the 3-level access namespace. All will be asserted from this |
|---|
| 470 | testbed and can include the local username and porject that will be |
|---|
| 471 | asserted on their behalf by this fedd. Each fedid is also added to the |
|---|
| 472 | authorization system with the "create" attribute. |
|---|
| 473 | """ |
|---|
| 474 | self.accessdb = {} |
|---|
| 475 | # These are the regexps for parsing the db |
|---|
| 476 | name_expr = "[" + string.ascii_letters + string.digits + "\.\-]+" |
|---|
| 477 | project_line = re.compile("^\s*fedid:([" + string.hexdigits + "]+)"+ \ |
|---|
| 478 | "\s*->\(\s*("+name_expr+")\s*,\s*("+name_expr+")\s*\)\s*$") |
|---|
| 479 | user_line = re.compile("^\s*fedid:([" + string.hexdigits + "]+)"+ \ |
|---|
| 480 | "\s*->\s*(" + name_expr + ")\s*$") |
|---|
| 481 | lineno = 0 |
|---|
| 482 | |
|---|
| 483 | # Parse the mappings and store in self.authdb, a dict of |
|---|
| 484 | # fedid -> (proj, user) |
|---|
| 485 | try: |
|---|
| 486 | f = open(accessdb_file, "r") |
|---|
| 487 | for line in f: |
|---|
| 488 | lineno += 1 |
|---|
| 489 | line = line.strip() |
|---|
| 490 | if len(line) == 0 or line.startswith('#'): |
|---|
| 491 | continue |
|---|
| 492 | m = project_line.match(line) |
|---|
| 493 | if m: |
|---|
| 494 | fid = fedid(hexstr=m.group(1)) |
|---|
| 495 | project, user = m.group(2,3) |
|---|
| 496 | if not self.accessdb.has_key(fid): |
|---|
| 497 | self.accessdb[fid] = [] |
|---|
| 498 | self.accessdb[fid].append((project, user)) |
|---|
| 499 | continue |
|---|
| 500 | |
|---|
| 501 | m = user_line.match(line) |
|---|
| 502 | if m: |
|---|
| 503 | fid = fedid(hexstr=m.group(1)) |
|---|
| 504 | project = None |
|---|
| 505 | user = m.group(2) |
|---|
| 506 | if not self.accessdb.has_key(fid): |
|---|
| 507 | self.accessdb[fid] = [] |
|---|
| 508 | self.accessdb[fid].append((project, user)) |
|---|
| 509 | continue |
|---|
| 510 | self.log.warn("[experiment_control] Error parsing access " +\ |
|---|
| 511 | "db %s at line %d" % (accessdb_file, lineno)) |
|---|
| 512 | except IOError: |
|---|
| 513 | raise service_error(service_error.internal, |
|---|
| 514 | "Error opening/reading %s as experiment " +\ |
|---|
| 515 | "control accessdb" % accessdb_file) |
|---|
| 516 | f.close() |
|---|
| 517 | |
|---|
| 518 | # Initialize the authorization attributes |
|---|
| 519 | for fid in self.accessdb.keys(): |
|---|
| 520 | self.auth.set_attribute(fid, 'create') |
|---|
| 521 | self.auth.set_attribute(fid, 'new') |
|---|
| 522 | |
|---|
| 523 | def read_mapdb(self, file): |
|---|
| 524 | """ |
|---|
| 525 | Read a simple colon separated list of mappings for the |
|---|
| 526 | label-to-testbed-URL mappings. Clears or creates self.tbmap. |
|---|
| 527 | """ |
|---|
| 528 | |
|---|
| 529 | self.tbmap = { } |
|---|
| 530 | lineno =0 |
|---|
| 531 | try: |
|---|
| 532 | f = open(file, "r") |
|---|
| 533 | for line in f: |
|---|
| 534 | lineno += 1 |
|---|
| 535 | line = line.strip() |
|---|
| 536 | if line.startswith('#') or len(line) == 0: |
|---|
| 537 | continue |
|---|
| 538 | try: |
|---|
| 539 | label, url = line.split(':', 1) |
|---|
| 540 | self.tbmap[label] = url |
|---|
| 541 | except ValueError, e: |
|---|
| 542 | self.log.warn("[read_mapdb] Ignored bad line (%d) in " +\ |
|---|
| 543 | "map db: %s %s" % (lineno, line, e)) |
|---|
| 544 | except IOError, e: |
|---|
| 545 | self.log.warning("[read_mapdb]: No saved map database: Can't " +\ |
|---|
| 546 | "open %s: %s" % (file, e)) |
|---|
| 547 | f.close() |
|---|
| 548 | |
|---|
| 549 | def read_store(self): |
|---|
| 550 | try: |
|---|
| 551 | self.synch_store = synch_store() |
|---|
| 552 | self.synch_store.load(self.store_filename) |
|---|
| 553 | self.log.debug("[read_store]: Read store from %s" % \ |
|---|
| 554 | self.store_filename) |
|---|
| 555 | except IOError, e: |
|---|
| 556 | self.log.warning("[read_store]: No saved store: Can't open %s: %s"\ |
|---|
| 557 | % (self.state_filename, e)) |
|---|
| 558 | self.synch_store = synch_store() |
|---|
| 559 | |
|---|
| 560 | # Set the initial permissions on data in the store. XXX: This ad hoc |
|---|
| 561 | # authorization attribute initialization is getting out of hand. |
|---|
| 562 | for k in self.synch_store.all_keys(): |
|---|
| 563 | try: |
|---|
| 564 | if k.startswith('fedid:'): |
|---|
| 565 | fid = fedid(hexstr=k[6:46]) |
|---|
| 566 | if self.state.has_key(fid): |
|---|
| 567 | for a in self.get_alloc_ids(self.state[fid]): |
|---|
| 568 | self.auth.set_attribute(a, k) |
|---|
| 569 | except ValueError, e: |
|---|
| 570 | self.log.warn("Cannot deduce permissions for %s" % k) |
|---|
| 571 | |
|---|
| 572 | |
|---|
| 573 | def write_store(self): |
|---|
| 574 | """ |
|---|
| 575 | Write a new copy of synch_store after writing current state |
|---|
| 576 | to a backup. We use the internal synch_store pickle method to avoid |
|---|
| 577 | incinsistent data. |
|---|
| 578 | |
|---|
| 579 | State format is a simple pickling of the store. |
|---|
| 580 | """ |
|---|
| 581 | if os.access(self.store_filename, os.W_OK): |
|---|
| 582 | copy_file(self.store_filename, \ |
|---|
| 583 | "%s.bak" % self.store_filename) |
|---|
| 584 | try: |
|---|
| 585 | self.synch_store.save(self.store_filename) |
|---|
| 586 | except IOError, e: |
|---|
| 587 | self.log.error("Can't write file %s: %s" % \ |
|---|
| 588 | (self.store_filename, e)) |
|---|
| 589 | except TypeError, e: |
|---|
| 590 | self.log.error("Pickling problem (TypeError): %s" % e) |
|---|
| 591 | |
|---|
| 592 | |
|---|
| 593 | def generate_ssh_keys(self, dest, type="rsa" ): |
|---|
| 594 | """ |
|---|
| 595 | Generate a set of keys for the gateways to use to talk. |
|---|
| 596 | |
|---|
| 597 | Keys are of type type and are stored in the required dest file. |
|---|
| 598 | """ |
|---|
| 599 | valid_types = ("rsa", "dsa") |
|---|
| 600 | t = type.lower(); |
|---|
| 601 | if t not in valid_types: raise ValueError |
|---|
| 602 | cmd = [self.ssh_keygen, '-t', t, '-N', '', '-f', dest] |
|---|
| 603 | |
|---|
| 604 | try: |
|---|
| 605 | trace = open("/dev/null", "w") |
|---|
| 606 | except IOError: |
|---|
| 607 | raise service_error(service_error.internal, |
|---|
| 608 | "Cannot open /dev/null??"); |
|---|
| 609 | |
|---|
| 610 | # May raise CalledProcessError |
|---|
| 611 | self.log.debug("[generate_ssh_keys]: %s" % " ".join(cmd)) |
|---|
| 612 | rv = call(cmd, stdout=trace, stderr=trace, close_fds=True) |
|---|
| 613 | if rv != 0: |
|---|
| 614 | raise service_error(service_error.internal, |
|---|
| 615 | "Cannot generate nonce ssh keys. %s return code %d" \ |
|---|
| 616 | % (self.ssh_keygen, rv)) |
|---|
| 617 | |
|---|
| 618 | def gentopo(self, str): |
|---|
| 619 | """ |
|---|
| 620 | Generate the topology dtat structure from the splitter's XML |
|---|
| 621 | representation of it. |
|---|
| 622 | |
|---|
| 623 | The topology XML looks like: |
|---|
| 624 | <experiment> |
|---|
| 625 | <nodes> |
|---|
| 626 | <node><vname></vname><ips>ip1:ip2</ips></node> |
|---|
| 627 | </nodes> |
|---|
| 628 | <lans> |
|---|
| 629 | <lan> |
|---|
| 630 | <vname></vname><vnode></vnode><ip></ip> |
|---|
| 631 | <bandwidth></bandwidth><member>node:port</member> |
|---|
| 632 | </lan> |
|---|
| 633 | </lans> |
|---|
| 634 | """ |
|---|
| 635 | class topo_parse: |
|---|
| 636 | """ |
|---|
| 637 | Parse the topology XML and create the dats structure. |
|---|
| 638 | """ |
|---|
| 639 | def __init__(self): |
|---|
| 640 | # Typing of the subelements for data conversion |
|---|
| 641 | self.str_subelements = ('vname', 'vnode', 'ips', 'ip', 'member') |
|---|
| 642 | self.int_subelements = ( 'bandwidth',) |
|---|
| 643 | self.float_subelements = ( 'delay',) |
|---|
| 644 | # The final data structure |
|---|
| 645 | self.nodes = [ ] |
|---|
| 646 | self.lans = [ ] |
|---|
| 647 | self.topo = { \ |
|---|
| 648 | 'node': self.nodes,\ |
|---|
| 649 | 'lan' : self.lans,\ |
|---|
| 650 | } |
|---|
| 651 | self.element = { } # Current element being created |
|---|
| 652 | self.chars = "" # Last text seen |
|---|
| 653 | |
|---|
| 654 | def end_element(self, name): |
|---|
| 655 | # After each sub element the contents is added to the current |
|---|
| 656 | # element or to the appropriate list. |
|---|
| 657 | if name == 'node': |
|---|
| 658 | self.nodes.append(self.element) |
|---|
| 659 | self.element = { } |
|---|
| 660 | elif name == 'lan': |
|---|
| 661 | self.lans.append(self.element) |
|---|
| 662 | self.element = { } |
|---|
| 663 | elif name in self.str_subelements: |
|---|
| 664 | self.element[name] = self.chars |
|---|
| 665 | self.chars = "" |
|---|
| 666 | elif name in self.int_subelements: |
|---|
| 667 | self.element[name] = int(self.chars) |
|---|
| 668 | self.chars = "" |
|---|
| 669 | elif name in self.float_subelements: |
|---|
| 670 | self.element[name] = float(self.chars) |
|---|
| 671 | self.chars = "" |
|---|
| 672 | |
|---|
| 673 | def found_chars(self, data): |
|---|
| 674 | self.chars += data.rstrip() |
|---|
| 675 | |
|---|
| 676 | |
|---|
| 677 | tp = topo_parse(); |
|---|
| 678 | parser = xml.parsers.expat.ParserCreate() |
|---|
| 679 | parser.EndElementHandler = tp.end_element |
|---|
| 680 | parser.CharacterDataHandler = tp.found_chars |
|---|
| 681 | |
|---|
| 682 | parser.Parse(str) |
|---|
| 683 | |
|---|
| 684 | return tp.topo |
|---|
| 685 | |
|---|
| 686 | |
|---|
| 687 | def genviz(self, topo): |
|---|
| 688 | """ |
|---|
| 689 | Generate the visualization the virtual topology |
|---|
| 690 | """ |
|---|
| 691 | |
|---|
| 692 | neato = "/usr/local/bin/neato" |
|---|
| 693 | # These are used to parse neato output and to create the visualization |
|---|
| 694 | # file. |
|---|
| 695 | vis_re = re.compile('^\s*"?([\w\-]+)"?\s+\[.*pos="([\d\.]+),([\d\.]+)"') |
|---|
| 696 | vis_fmt = "<node><name>%s</name><x>%s</x><y>%s</y><type>" + \ |
|---|
| 697 | "%s</type></node>" |
|---|
| 698 | |
|---|
| 699 | try: |
|---|
| 700 | # Node names |
|---|
| 701 | nodes = [ n['vname'] for n in topo['node'] ] |
|---|
| 702 | topo_lans = topo['lan'] |
|---|
| 703 | except KeyError, e: |
|---|
| 704 | raise service_error(service_error.internal, "Bad topology: %s" %e) |
|---|
| 705 | |
|---|
| 706 | lans = { } |
|---|
| 707 | links = { } |
|---|
| 708 | |
|---|
| 709 | # Walk through the virtual topology, organizing the connections into |
|---|
| 710 | # 2-node connections (links) and more-than-2-node connections (lans). |
|---|
| 711 | # When a lan is created, it's added to the list of nodes (there's a |
|---|
| 712 | # node in the visualization for the lan). |
|---|
| 713 | for l in topo_lans: |
|---|
| 714 | if links.has_key(l['vname']): |
|---|
| 715 | if len(links[l['vname']]) < 2: |
|---|
| 716 | links[l['vname']].append(l['vnode']) |
|---|
| 717 | else: |
|---|
| 718 | nodes.append(l['vname']) |
|---|
| 719 | lans[l['vname']] = links[l['vname']] |
|---|
| 720 | del links[l['vname']] |
|---|
| 721 | lans[l['vname']].append(l['vnode']) |
|---|
| 722 | elif lans.has_key(l['vname']): |
|---|
| 723 | lans[l['vname']].append(l['vnode']) |
|---|
| 724 | else: |
|---|
| 725 | links[l['vname']] = [ l['vnode'] ] |
|---|
| 726 | |
|---|
| 727 | |
|---|
| 728 | # Open up a temporary file for dot to turn into a visualization |
|---|
| 729 | try: |
|---|
| 730 | df, dotname = tempfile.mkstemp() |
|---|
| 731 | dotfile = os.fdopen(df, 'w') |
|---|
| 732 | except IOError: |
|---|
| 733 | raise service_error(service_error.internal, |
|---|
| 734 | "Failed to open file in genviz") |
|---|
| 735 | |
|---|
| 736 | try: |
|---|
| 737 | dnull = open('/dev/null', 'w') |
|---|
| 738 | except IOError: |
|---|
| 739 | service_error(service_error.internal, |
|---|
| 740 | "Failed to open /dev/null in genviz") |
|---|
| 741 | |
|---|
| 742 | # Generate a dot/neato input file from the links, nodes and lans |
|---|
| 743 | try: |
|---|
| 744 | print >>dotfile, "graph G {" |
|---|
| 745 | for n in nodes: |
|---|
| 746 | print >>dotfile, '\t"%s"' % n |
|---|
| 747 | for l in links.keys(): |
|---|
| 748 | print >>dotfile, '\t"%s" -- "%s"' % tuple(links[l]) |
|---|
| 749 | for l in lans.keys(): |
|---|
| 750 | for n in lans[l]: |
|---|
| 751 | print >>dotfile, '\t "%s" -- "%s"' % (n,l) |
|---|
| 752 | print >>dotfile, "}" |
|---|
| 753 | dotfile.close() |
|---|
| 754 | except TypeError: |
|---|
| 755 | raise service_error(service_error.internal, |
|---|
| 756 | "Single endpoint link in vtopo") |
|---|
| 757 | except IOError: |
|---|
| 758 | raise service_error(service_error.internal, "Cannot write dot file") |
|---|
| 759 | |
|---|
| 760 | # Use dot to create a visualization |
|---|
| 761 | dot = Popen([neato, '-Gstart=rand', '-Gepsilon=0.005', '-Gmaxiter=2000', |
|---|
| 762 | '-Gpack=true', dotname], stdout=PIPE, stderr=dnull, |
|---|
| 763 | close_fds=True) |
|---|
| 764 | dnull.close() |
|---|
| 765 | |
|---|
| 766 | # Translate dot to vis format |
|---|
| 767 | vis_nodes = [ ] |
|---|
| 768 | vis = { 'node': vis_nodes } |
|---|
| 769 | for line in dot.stdout: |
|---|
| 770 | m = vis_re.match(line) |
|---|
| 771 | if m: |
|---|
| 772 | vn = m.group(1) |
|---|
| 773 | vis_node = {'name': vn, \ |
|---|
| 774 | 'x': float(m.group(2)),\ |
|---|
| 775 | 'y' : float(m.group(3)),\ |
|---|
| 776 | } |
|---|
| 777 | if vn in links.keys() or vn in lans.keys(): |
|---|
| 778 | vis_node['type'] = 'lan' |
|---|
| 779 | else: |
|---|
| 780 | vis_node['type'] = 'node' |
|---|
| 781 | vis_nodes.append(vis_node) |
|---|
| 782 | rv = dot.wait() |
|---|
| 783 | |
|---|
| 784 | os.remove(dotname) |
|---|
| 785 | if rv == 0 : return vis |
|---|
| 786 | else: return None |
|---|
| 787 | |
|---|
| 788 | def get_access(self, tb, nodes, tbparam, master, export_project, |
|---|
| 789 | access_user, services): |
|---|
| 790 | """ |
|---|
| 791 | Get access to testbed through fedd and set the parameters for that tb |
|---|
| 792 | """ |
|---|
| 793 | uri = self.tbmap.get(tb, None) |
|---|
| 794 | if not uri: |
|---|
| 795 | raise service_error(service_error.server_config, |
|---|
| 796 | "Unknown testbed: %s" % tb) |
|---|
| 797 | |
|---|
| 798 | # Tweak search order so that if there are entries in access_user that |
|---|
| 799 | # have a project matching the export project, we try them first |
|---|
| 800 | if export_project: |
|---|
| 801 | access_sequence = [ (p, u) for p, u in access_user \ |
|---|
| 802 | if p == export_project] |
|---|
| 803 | access_sequence.extend([(p, u) for p, u in access_user \ |
|---|
| 804 | if p != export_project]) |
|---|
| 805 | else: |
|---|
| 806 | access_sequence = access_user |
|---|
| 807 | |
|---|
| 808 | for p, u in access_sequence: |
|---|
| 809 | self.log.debug(("[get_access] Attempting access from (%s, %s) " + \ |
|---|
| 810 | "to %s") % ((p or "None"), u, uri)) |
|---|
| 811 | |
|---|
| 812 | if p: |
|---|
| 813 | # Request with user and project specified |
|---|
| 814 | req = {\ |
|---|
| 815 | 'destinationTestbed' : { 'uri' : uri }, |
|---|
| 816 | 'credential': [ "project: %s" % p, "user: %s" % u], |
|---|
| 817 | 'allocID' : { 'localname': 'test' }, |
|---|
| 818 | } |
|---|
| 819 | else: |
|---|
| 820 | # Request with only user specified |
|---|
| 821 | req = {\ |
|---|
| 822 | 'destinationTestbed' : { 'uri' : uri }, |
|---|
| 823 | 'credential': [ 'user: %s' % u ], |
|---|
| 824 | 'user': [ {'userID': { 'localname': u } } ], |
|---|
| 825 | 'allocID' : { 'localname': 'test' }, |
|---|
| 826 | } |
|---|
| 827 | |
|---|
| 828 | # If there is a master, and this is it, ask it to export services |
|---|
| 829 | # XXX move this to export pseudo-service |
|---|
| 830 | if tb == master: |
|---|
| 831 | req['service'] = [ |
|---|
| 832 | { 'name': 'userconfig', 'visibility': 'export'}, |
|---|
| 833 | { 'name': 'SMB', 'visibility': 'export'}, |
|---|
| 834 | { 'name': 'seer', 'visibility': 'export'}, |
|---|
| 835 | { 'name': 'tmcd', 'visibility': 'export'}, |
|---|
| 836 | ] |
|---|
| 837 | |
|---|
| 838 | # node resources if any |
|---|
| 839 | if nodes != None and len(nodes) > 0: |
|---|
| 840 | rnodes = [ ] |
|---|
| 841 | for n in nodes: |
|---|
| 842 | rn = { } |
|---|
| 843 | image, hw, count = n.split(":") |
|---|
| 844 | if image: rn['image'] = [ image ] |
|---|
| 845 | if hw: rn['hardware'] = [ hw ] |
|---|
| 846 | if count and int(count) >0 : rn['count'] = int(count) |
|---|
| 847 | rnodes.append(rn) |
|---|
| 848 | req['resources']= { } |
|---|
| 849 | req['resources']['node'] = rnodes |
|---|
| 850 | |
|---|
| 851 | try: |
|---|
| 852 | if self.local_access.has_key(uri): |
|---|
| 853 | # Local access call |
|---|
| 854 | req = { 'RequestAccessRequestBody' : req } |
|---|
| 855 | r = self.local_access[uri].RequestAccess(req, |
|---|
| 856 | fedid(file=self.cert_file)) |
|---|
| 857 | r = { 'RequestAccessResponseBody' : r } |
|---|
| 858 | else: |
|---|
| 859 | r = self.call_RequestAccess(uri, req, |
|---|
| 860 | self.cert_file, self.cert_pwd, self.trusted_certs) |
|---|
| 861 | except service_error, e: |
|---|
| 862 | if e.code == service_error.access: |
|---|
| 863 | self.log.debug("[get_access] Access denied") |
|---|
| 864 | r = None |
|---|
| 865 | continue |
|---|
| 866 | else: |
|---|
| 867 | raise e |
|---|
| 868 | |
|---|
| 869 | if r.has_key('RequestAccessResponseBody'): |
|---|
| 870 | # Through to here we have a valid response, not a fault. |
|---|
| 871 | # Access denied is a fault, so something better or worse than |
|---|
| 872 | # access denied has happened. |
|---|
| 873 | r = r['RequestAccessResponseBody'] |
|---|
| 874 | self.log.debug("[get_access] Access granted") |
|---|
| 875 | break |
|---|
| 876 | else: |
|---|
| 877 | raise service_error(service_error.protocol, |
|---|
| 878 | "Bad proxy response") |
|---|
| 879 | |
|---|
| 880 | if not r: |
|---|
| 881 | raise service_error(service_error.access, |
|---|
| 882 | "Access denied by %s (%s)" % (tb, uri)) |
|---|
| 883 | |
|---|
| 884 | tbparam[tb] = { |
|---|
| 885 | "allocID" : r['allocID'], |
|---|
| 886 | "uri": uri, |
|---|
| 887 | } |
|---|
| 888 | if 'service' in r: |
|---|
| 889 | services.extend(r['service']) |
|---|
| 890 | |
|---|
| 891 | # Add attributes to parameter space. We don't allow attributes to |
|---|
| 892 | # overlay any parameters already installed. |
|---|
| 893 | for a in r.get('fedAttr', []): |
|---|
| 894 | try: |
|---|
| 895 | if a['attribute'] and \ |
|---|
| 896 | isinstance(a['attribute'], basestring)\ |
|---|
| 897 | and not tbparam[tb].has_key(a['attribute'].lower()): |
|---|
| 898 | tbparam[tb][a['attribute'].lower()] = a['value'] |
|---|
| 899 | except KeyError: |
|---|
| 900 | self.log.error("Bad attribute in response: %s" % a) |
|---|
| 901 | |
|---|
| 902 | def release_access(self, tb, aid, uri=None): |
|---|
| 903 | """ |
|---|
| 904 | Release access to testbed through fedd |
|---|
| 905 | """ |
|---|
| 906 | |
|---|
| 907 | if not uri: |
|---|
| 908 | uri = self.tbmap.get(tb, None) |
|---|
| 909 | if not uri: |
|---|
| 910 | raise service_error(service_error.server_config, |
|---|
| 911 | "Unknown testbed: %s" % tb) |
|---|
| 912 | |
|---|
| 913 | if self.local_access.has_key(uri): |
|---|
| 914 | resp = self.local_access[uri].ReleaseAccess(\ |
|---|
| 915 | { 'ReleaseAccessRequestBody' : {'allocID': aid},}, |
|---|
| 916 | fedid(file=self.cert_file)) |
|---|
| 917 | resp = { 'ReleaseAccessResponseBody': resp } |
|---|
| 918 | else: |
|---|
| 919 | resp = self.call_ReleaseAccess(uri, {'allocID': aid}, |
|---|
| 920 | self.cert_file, self.cert_pwd, self.trusted_certs) |
|---|
| 921 | |
|---|
| 922 | # better error coding |
|---|
| 923 | |
|---|
| 924 | def remote_ns2topdl(self, uri, desc): |
|---|
| 925 | |
|---|
| 926 | req = { |
|---|
| 927 | 'description' : { 'ns2description': desc }, |
|---|
| 928 | } |
|---|
| 929 | |
|---|
| 930 | r = self.call_Ns2Topdl(uri, req, self.cert_file, self.cert_pwd, |
|---|
| 931 | self.trusted_certs) |
|---|
| 932 | |
|---|
| 933 | if r.has_key('Ns2TopdlResponseBody'): |
|---|
| 934 | r = r['Ns2TopdlResponseBody'] |
|---|
| 935 | ed = r.get('experimentdescription', None) |
|---|
| 936 | if ed.has_key('topdldescription'): |
|---|
| 937 | return topdl.Topology(**ed['topdldescription']) |
|---|
| 938 | else: |
|---|
| 939 | raise service_error(service_error.protocol, |
|---|
| 940 | "Bad splitter response (no output)") |
|---|
| 941 | else: |
|---|
| 942 | raise service_error(service_error.protocol, "Bad splitter response") |
|---|
| 943 | |
|---|
| 944 | class start_segment: |
|---|
| 945 | def __init__(self, debug=False, log=None, testbed="", cert_file=None, |
|---|
| 946 | cert_pwd=None, trusted_certs=None, caller=None, |
|---|
| 947 | log_collector=None): |
|---|
| 948 | self.log = log |
|---|
| 949 | self.debug = debug |
|---|
| 950 | self.cert_file = cert_file |
|---|
| 951 | self.cert_pwd = cert_pwd |
|---|
| 952 | self.trusted_certs = None |
|---|
| 953 | self.caller = caller |
|---|
| 954 | self.testbed = testbed |
|---|
| 955 | self.log_collector = log_collector |
|---|
| 956 | self.response = None |
|---|
| 957 | |
|---|
| 958 | def __call__(self, uri, aid, topo, master, attrs=None, connInfo=None, |
|---|
| 959 | services=None): |
|---|
| 960 | req = { |
|---|
| 961 | 'allocID': { 'fedid' : aid }, |
|---|
| 962 | 'segmentdescription': { |
|---|
| 963 | 'topdldescription': topo.to_dict(), |
|---|
| 964 | }, |
|---|
| 965 | 'master': master, |
|---|
| 966 | } |
|---|
| 967 | |
|---|
| 968 | if connInfo: |
|---|
| 969 | req['connection'] = connInfo |
|---|
| 970 | # Add services to request. The master exports, everyone else |
|---|
| 971 | # imports. |
|---|
| 972 | if services: |
|---|
| 973 | svcs = [ x.copy() for x in services] |
|---|
| 974 | for s in svcs: |
|---|
| 975 | if master: s['visibility'] = 'export' |
|---|
| 976 | else: s['visibility'] = 'import' |
|---|
| 977 | req['service'] = svcs |
|---|
| 978 | if attrs: |
|---|
| 979 | req['fedAttr'] = attrs |
|---|
| 980 | |
|---|
| 981 | try: |
|---|
| 982 | self.log.debug("Calling StartSegment at %s " % uri) |
|---|
| 983 | r = self.caller(uri, req, self.cert_file, self.cert_pwd, |
|---|
| 984 | self.trusted_certs) |
|---|
| 985 | if r.has_key('StartSegmentResponseBody'): |
|---|
| 986 | lval = r['StartSegmentResponseBody'].get('allocationLog', |
|---|
| 987 | None) |
|---|
| 988 | if lval and self.log_collector: |
|---|
| 989 | for line in lval.splitlines(True): |
|---|
| 990 | self.log_collector.write(line) |
|---|
| 991 | self.response = r |
|---|
| 992 | else: |
|---|
| 993 | raise service_error(service_error.internal, |
|---|
| 994 | "Bad response!?: %s" %r) |
|---|
| 995 | return True |
|---|
| 996 | except service_error, e: |
|---|
| 997 | self.log.error("Start segment failed on %s: %s" % \ |
|---|
| 998 | (self.testbed, e)) |
|---|
| 999 | return False |
|---|
| 1000 | |
|---|
| 1001 | |
|---|
| 1002 | |
|---|
| 1003 | class terminate_segment: |
|---|
| 1004 | def __init__(self, debug=False, log=None, testbed="", cert_file=None, |
|---|
| 1005 | cert_pwd=None, trusted_certs=None, caller=None): |
|---|
| 1006 | self.log = log |
|---|
| 1007 | self.debug = debug |
|---|
| 1008 | self.cert_file = cert_file |
|---|
| 1009 | self.cert_pwd = cert_pwd |
|---|
| 1010 | self.trusted_certs = None |
|---|
| 1011 | self.caller = caller |
|---|
| 1012 | self.testbed = testbed |
|---|
| 1013 | |
|---|
| 1014 | def __call__(self, uri, aid ): |
|---|
| 1015 | req = { |
|---|
| 1016 | 'allocID': aid , |
|---|
| 1017 | } |
|---|
| 1018 | try: |
|---|
| 1019 | r = self.caller(uri, req, self.cert_file, self.cert_pwd, |
|---|
| 1020 | self.trusted_certs) |
|---|
| 1021 | return True |
|---|
| 1022 | except service_error, e: |
|---|
| 1023 | self.log.error("Terminate segment failed on %s: %s" % \ |
|---|
| 1024 | (self.testbed, e)) |
|---|
| 1025 | return False |
|---|
| 1026 | |
|---|
| 1027 | |
|---|
| 1028 | def allocate_resources(self, allocated, master, eid, expid, |
|---|
| 1029 | tbparams, topo, tmpdir, alloc_log=None, log_collector=None, |
|---|
| 1030 | attrs=None, connInfo={}, services=[]): |
|---|
| 1031 | |
|---|
| 1032 | started = { } # Testbeds where a sub-experiment started |
|---|
| 1033 | # successfully |
|---|
| 1034 | |
|---|
| 1035 | # XXX |
|---|
| 1036 | fail_soft = False |
|---|
| 1037 | |
|---|
| 1038 | log = alloc_log or self.log |
|---|
| 1039 | |
|---|
| 1040 | thread_pool = self.thread_pool(self.nthreads) |
|---|
| 1041 | threads = [ ] |
|---|
| 1042 | |
|---|
| 1043 | for tb in allocated.keys(): |
|---|
| 1044 | # Create and start a thread to start the segment, and save it |
|---|
| 1045 | # to get the return value later |
|---|
| 1046 | thread_pool.wait_for_slot() |
|---|
| 1047 | uri = tbparams[tb].get('uri', self.tbmap.get(tb, None)) |
|---|
| 1048 | if not uri: |
|---|
| 1049 | raise service_error(service_error.internal, |
|---|
| 1050 | "Unknown testbed %s !?" % tb) |
|---|
| 1051 | |
|---|
| 1052 | if tbparams[tb].has_key('allocID') and \ |
|---|
| 1053 | tbparams[tb]['allocID'].has_key('fedid'): |
|---|
| 1054 | aid = tbparams[tb]['allocID']['fedid'] |
|---|
| 1055 | else: |
|---|
| 1056 | raise service_error(service_error.internal, |
|---|
| 1057 | "No alloc id for testbed %s !?" % tb) |
|---|
| 1058 | |
|---|
| 1059 | t = self.pooled_thread(\ |
|---|
| 1060 | target=self.start_segment(log=log, debug=self.debug, |
|---|
| 1061 | testbed=tb, cert_file=self.cert_file, |
|---|
| 1062 | cert_pwd=self.cert_pwd, |
|---|
| 1063 | trusted_certs=self.trusted_certs, |
|---|
| 1064 | caller=self.call_StartSegment, |
|---|
| 1065 | log_collector=log_collector), |
|---|
| 1066 | args=(uri, aid, topo[tb], tb == master, |
|---|
| 1067 | attrs, connInfo[tb], services), |
|---|
| 1068 | name=tb, |
|---|
| 1069 | pdata=thread_pool, trace_file=self.trace_file) |
|---|
| 1070 | threads.append(t) |
|---|
| 1071 | t.start() |
|---|
| 1072 | |
|---|
| 1073 | # Wait until all finish (keep pinging the log, though) |
|---|
| 1074 | mins = 0 |
|---|
| 1075 | revoked = False |
|---|
| 1076 | while not thread_pool.wait_for_all_done(60.0): |
|---|
| 1077 | mins += 1 |
|---|
| 1078 | alloc_log.info("Waiting for sub threads (it has been %d mins)" \ |
|---|
| 1079 | % mins) |
|---|
| 1080 | if not revoked and \ |
|---|
| 1081 | len([ t.getName() for t in threads if t.rv == False]) > 0: |
|---|
| 1082 | # a testbed has failed. Revoke this experiment's |
|---|
| 1083 | # synchronizarion values so that sub experiments will not |
|---|
| 1084 | # deadlock waiting for synchronization that will never happen |
|---|
| 1085 | self.log.info("A subexperiment has failed to swap in, " + \ |
|---|
| 1086 | "revoking synch keys") |
|---|
| 1087 | var_key = "fedid:%s" % expid |
|---|
| 1088 | for k in self.synch_store.all_keys(): |
|---|
| 1089 | if len(k) > 45 and k[0:46] == var_key: |
|---|
| 1090 | self.synch_store.revoke_key(k) |
|---|
| 1091 | revoked = True |
|---|
| 1092 | |
|---|
| 1093 | failed = [ t.getName() for t in threads if not t.rv ] |
|---|
| 1094 | succeeded = [tb for tb in allocated.keys() if tb not in failed] |
|---|
| 1095 | |
|---|
| 1096 | # If one failed clean up, unless fail_soft is set |
|---|
| 1097 | if failed: |
|---|
| 1098 | if not fail_soft: |
|---|
| 1099 | thread_pool.clear() |
|---|
| 1100 | for tb in succeeded: |
|---|
| 1101 | # Create and start a thread to stop the segment |
|---|
| 1102 | thread_pool.wait_for_slot() |
|---|
| 1103 | uri = tbparams[tb]['uri'] |
|---|
| 1104 | t = self.pooled_thread(\ |
|---|
| 1105 | target=self.terminate_segment(log=log, |
|---|
| 1106 | testbed=tb, |
|---|
| 1107 | cert_file=self.cert_file, |
|---|
| 1108 | cert_pwd=self.cert_pwd, |
|---|
| 1109 | trusted_certs=self.trusted_certs, |
|---|
| 1110 | caller=self.call_TerminateSegment), |
|---|
| 1111 | args=(uri, tbparams[tb]['federant']['allocID']), |
|---|
| 1112 | name=tb, |
|---|
| 1113 | pdata=thread_pool, trace_file=self.trace_file) |
|---|
| 1114 | t.start() |
|---|
| 1115 | # Wait until all finish (if any are being stopped) |
|---|
| 1116 | if succeeded: |
|---|
| 1117 | thread_pool.wait_for_all_done() |
|---|
| 1118 | |
|---|
| 1119 | # release the allocations |
|---|
| 1120 | for tb in tbparams.keys(): |
|---|
| 1121 | self.release_access(tb, tbparams[tb]['allocID'], |
|---|
| 1122 | tbparams[tb].get('uri', None)) |
|---|
| 1123 | # Remove the placeholder |
|---|
| 1124 | self.state_lock.acquire() |
|---|
| 1125 | self.state[eid]['experimentStatus'] = 'failed' |
|---|
| 1126 | if self.state_filename: self.write_state() |
|---|
| 1127 | self.state_lock.release() |
|---|
| 1128 | |
|---|
| 1129 | log.error("Swap in failed on %s" % ",".join(failed)) |
|---|
| 1130 | return |
|---|
| 1131 | else: |
|---|
| 1132 | log.info("[start_segment]: Experiment %s active" % eid) |
|---|
| 1133 | |
|---|
| 1134 | |
|---|
| 1135 | # Walk up tmpdir, deleting as we go |
|---|
| 1136 | if self.cleanup: |
|---|
| 1137 | log.debug("[start_experiment]: removing %s" % tmpdir) |
|---|
| 1138 | for path, dirs, files in os.walk(tmpdir, topdown=False): |
|---|
| 1139 | for f in files: |
|---|
| 1140 | os.remove(os.path.join(path, f)) |
|---|
| 1141 | for d in dirs: |
|---|
| 1142 | os.rmdir(os.path.join(path, d)) |
|---|
| 1143 | os.rmdir(tmpdir) |
|---|
| 1144 | else: |
|---|
| 1145 | log.debug("[start_experiment]: not removing %s" % tmpdir) |
|---|
| 1146 | |
|---|
| 1147 | # Insert the experiment into our state and update the disk copy |
|---|
| 1148 | self.state_lock.acquire() |
|---|
| 1149 | self.state[expid]['experimentStatus'] = 'active' |
|---|
| 1150 | self.state[eid] = self.state[expid] |
|---|
| 1151 | if self.state_filename: self.write_state() |
|---|
| 1152 | self.state_lock.release() |
|---|
| 1153 | return |
|---|
| 1154 | |
|---|
| 1155 | |
|---|
| 1156 | def add_kit(self, e, kit): |
|---|
| 1157 | """ |
|---|
| 1158 | Add a Software object created from the list of (install, location) |
|---|
| 1159 | tuples passed as kit to the software attribute of an object e. We |
|---|
| 1160 | do this enough to break out the code, but it's kind of a hack to |
|---|
| 1161 | avoid changing the old tuple rep. |
|---|
| 1162 | """ |
|---|
| 1163 | |
|---|
| 1164 | s = [ topdl.Software(install=i, location=l) for i, l in kit] |
|---|
| 1165 | |
|---|
| 1166 | if isinstance(e.software, list): e.software.extend(s) |
|---|
| 1167 | else: e.software = s |
|---|
| 1168 | |
|---|
| 1169 | |
|---|
| 1170 | def create_experiment_state(self, fid, req, expid, expcert, |
|---|
| 1171 | state='starting'): |
|---|
| 1172 | """ |
|---|
| 1173 | Create the initial entry in the experiment's state. The expid and |
|---|
| 1174 | expcert are the experiment's fedid and certifacte that represents that |
|---|
| 1175 | ID, which are installed in the experiment state. If the request |
|---|
| 1176 | includes a suggested local name that is used if possible. If the local |
|---|
| 1177 | name is already taken by an experiment owned by this user that has |
|---|
| 1178 | failed, it is overwritten. Otherwise new letters are added until a |
|---|
| 1179 | valid localname is found. The generated local name is returned. |
|---|
| 1180 | """ |
|---|
| 1181 | |
|---|
| 1182 | if req.has_key('experimentID') and \ |
|---|
| 1183 | req['experimentID'].has_key('localname'): |
|---|
| 1184 | overwrite = False |
|---|
| 1185 | eid = req['experimentID']['localname'] |
|---|
| 1186 | # If there's an old failed experiment here with the same local name |
|---|
| 1187 | # and accessible by this user, we'll overwrite it, otherwise we'll |
|---|
| 1188 | # fall through and do the collision avoidance. |
|---|
| 1189 | old_expid = self.get_experiment_fedid(eid) |
|---|
| 1190 | if old_expid and self.check_experiment_access(fid, old_expid): |
|---|
| 1191 | self.state_lock.acquire() |
|---|
| 1192 | status = self.state[eid].get('experimentStatus', None) |
|---|
| 1193 | if status and status == 'failed': |
|---|
| 1194 | # remove the old access attribute |
|---|
| 1195 | self.auth.unset_attribute(fid, old_expid) |
|---|
| 1196 | overwrite = True |
|---|
| 1197 | del self.state[eid] |
|---|
| 1198 | del self.state[old_expid] |
|---|
| 1199 | self.state_lock.release() |
|---|
| 1200 | self.state_lock.acquire() |
|---|
| 1201 | while (self.state.has_key(eid) and not overwrite): |
|---|
| 1202 | eid += random.choice(string.ascii_letters) |
|---|
| 1203 | # Initial state |
|---|
| 1204 | self.state[eid] = { |
|---|
| 1205 | 'experimentID' : \ |
|---|
| 1206 | [ { 'localname' : eid }, {'fedid': expid } ], |
|---|
| 1207 | 'experimentStatus': state, |
|---|
| 1208 | 'experimentAccess': { 'X509' : expcert }, |
|---|
| 1209 | 'owner': fid, |
|---|
| 1210 | 'log' : [], |
|---|
| 1211 | } |
|---|
| 1212 | self.state[expid] = self.state[eid] |
|---|
| 1213 | if self.state_filename: self.write_state() |
|---|
| 1214 | self.state_lock.release() |
|---|
| 1215 | else: |
|---|
| 1216 | eid = self.exp_stem |
|---|
| 1217 | for i in range(0,5): |
|---|
| 1218 | eid += random.choice(string.ascii_letters) |
|---|
| 1219 | self.state_lock.acquire() |
|---|
| 1220 | while (self.state.has_key(eid)): |
|---|
| 1221 | eid = self.exp_stem |
|---|
| 1222 | for i in range(0,5): |
|---|
| 1223 | eid += random.choice(string.ascii_letters) |
|---|
| 1224 | # Initial state |
|---|
| 1225 | self.state[eid] = { |
|---|
| 1226 | 'experimentID' : \ |
|---|
| 1227 | [ { 'localname' : eid }, {'fedid': expid } ], |
|---|
| 1228 | 'experimentStatus': state, |
|---|
| 1229 | 'experimentAccess': { 'X509' : expcert }, |
|---|
| 1230 | 'owner': fid, |
|---|
| 1231 | 'log' : [], |
|---|
| 1232 | } |
|---|
| 1233 | self.state[expid] = self.state[eid] |
|---|
| 1234 | if self.state_filename: self.write_state() |
|---|
| 1235 | self.state_lock.release() |
|---|
| 1236 | |
|---|
| 1237 | return eid |
|---|
| 1238 | |
|---|
| 1239 | |
|---|
| 1240 | def allocate_ips_to_topo(self, top): |
|---|
| 1241 | """ |
|---|
| 1242 | Add an ip4_address attribute to all the hosts in the topology, based on |
|---|
| 1243 | the shared substrates on which they sit. An /etc/hosts file is also |
|---|
| 1244 | created and returned as a list of hostfiles entries. We also return |
|---|
| 1245 | the allocator, because we may need to allocate IPs to portals |
|---|
| 1246 | (specifically DRAGON portals). |
|---|
| 1247 | """ |
|---|
| 1248 | subs = sorted(top.substrates, |
|---|
| 1249 | cmp=lambda x,y: cmp(len(x.interfaces), len(y.interfaces)), |
|---|
| 1250 | reverse=True) |
|---|
| 1251 | ips = ip_allocator(int(ip_addr("10.0.0.0")), 2 **24) |
|---|
| 1252 | ifs = { } |
|---|
| 1253 | hosts = [ ] |
|---|
| 1254 | |
|---|
| 1255 | for idx, s in enumerate(subs): |
|---|
| 1256 | net_size = len(s.interfaces)+2 |
|---|
| 1257 | |
|---|
| 1258 | a = ips.allocate(net_size) |
|---|
| 1259 | if a : |
|---|
| 1260 | base, num = a |
|---|
| 1261 | if num < net_size: |
|---|
| 1262 | raise service_error(service_error.internal, |
|---|
| 1263 | "Allocator returned wrong number of IPs??") |
|---|
| 1264 | else: |
|---|
| 1265 | raise service_error(service_error.req, |
|---|
| 1266 | "Cannot allocate IP addresses") |
|---|
| 1267 | mask = ips.min_alloc |
|---|
| 1268 | while mask < net_size: |
|---|
| 1269 | mask *= 2 |
|---|
| 1270 | |
|---|
| 1271 | netmask = ((2**32-1) ^ (mask-1)) |
|---|
| 1272 | |
|---|
| 1273 | base += 1 |
|---|
| 1274 | for i in s.interfaces: |
|---|
| 1275 | i.attribute.append( |
|---|
| 1276 | topdl.Attribute('ip4_address', |
|---|
| 1277 | "%s" % ip_addr(base))) |
|---|
| 1278 | i.attribute.append( |
|---|
| 1279 | topdl.Attribute('ip4_netmask', |
|---|
| 1280 | "%s" % ip_addr(int(netmask)))) |
|---|
| 1281 | |
|---|
| 1282 | hname = i.element.name[0] |
|---|
| 1283 | if ifs.has_key(hname): |
|---|
| 1284 | hosts.append("%s\t%s-%s %s-%d" % \ |
|---|
| 1285 | (ip_addr(base), hname, s.name, hname, |
|---|
| 1286 | ifs[hname])) |
|---|
| 1287 | else: |
|---|
| 1288 | ifs[hname] = 0 |
|---|
| 1289 | hosts.append("%s\t%s-%s %s-%d %s" % \ |
|---|
| 1290 | (ip_addr(base), hname, s.name, hname, |
|---|
| 1291 | ifs[hname], hname)) |
|---|
| 1292 | |
|---|
| 1293 | ifs[hname] += 1 |
|---|
| 1294 | base += 1 |
|---|
| 1295 | return hosts, ips |
|---|
| 1296 | |
|---|
| 1297 | def get_access_to_testbeds(self, testbeds, access_user, |
|---|
| 1298 | export_project, master, allocated, tbparams, services): |
|---|
| 1299 | """ |
|---|
| 1300 | Request access to the various testbeds required for this instantiation |
|---|
| 1301 | (passed in as testbeds). User, access_user, expoert_project and master |
|---|
| 1302 | are used to construct the correct requests. Per-testbed parameters are |
|---|
| 1303 | returned in tbparams. |
|---|
| 1304 | """ |
|---|
| 1305 | for tb in testbeds: |
|---|
| 1306 | self.get_access(tb, None, tbparams, master, |
|---|
| 1307 | export_project, access_user, services) |
|---|
| 1308 | allocated[tb] = 1 |
|---|
| 1309 | |
|---|
| 1310 | def split_topology(self, top, topo, testbeds): |
|---|
| 1311 | """ |
|---|
| 1312 | Create the sub-topologies that are needed for experiment instantiation. |
|---|
| 1313 | """ |
|---|
| 1314 | for tb in testbeds: |
|---|
| 1315 | topo[tb] = top.clone() |
|---|
| 1316 | # copy in for loop allows deletions from the original |
|---|
| 1317 | for e in [ e for e in topo[tb].elements]: |
|---|
| 1318 | etb = e.get_attribute('testbed') |
|---|
| 1319 | # NB: elements without a testbed attribute won't appear in any |
|---|
| 1320 | # sub topologies. |
|---|
| 1321 | if not etb or etb != tb: |
|---|
| 1322 | for i in e.interface: |
|---|
| 1323 | for s in i.subs: |
|---|
| 1324 | try: |
|---|
| 1325 | s.interfaces.remove(i) |
|---|
| 1326 | except ValueError: |
|---|
| 1327 | raise service_error(service_error.internal, |
|---|
| 1328 | "Can't remove interface??") |
|---|
| 1329 | topo[tb].elements.remove(e) |
|---|
| 1330 | topo[tb].make_indices() |
|---|
| 1331 | |
|---|
| 1332 | def wrangle_software(self, expid, top, topo, tbparams): |
|---|
| 1333 | """ |
|---|
| 1334 | Copy software out to the repository directory, allocate permissions and |
|---|
| 1335 | rewrite the segment topologies to look for the software in local |
|---|
| 1336 | places. |
|---|
| 1337 | """ |
|---|
| 1338 | |
|---|
| 1339 | # Copy the rpms and tarfiles to a distribution directory from |
|---|
| 1340 | # which the federants can retrieve them |
|---|
| 1341 | linkpath = "%s/software" % expid |
|---|
| 1342 | softdir ="%s/%s" % ( self.repodir, linkpath) |
|---|
| 1343 | softmap = { } |
|---|
| 1344 | # These are in a list of tuples format (each kit). This comprehension |
|---|
| 1345 | # unwraps them into a single list of tuples that initilaizes the set of |
|---|
| 1346 | # tuples. |
|---|
| 1347 | pkgs = set([ t for l in [self.fedkit, self.gatewaykit] \ |
|---|
| 1348 | for p, t in l ]) |
|---|
| 1349 | pkgs.update([x.location for e in top.elements \ |
|---|
| 1350 | for x in e.software]) |
|---|
| 1351 | try: |
|---|
| 1352 | os.makedirs(softdir) |
|---|
| 1353 | except IOError, e: |
|---|
| 1354 | raise service_error( |
|---|
| 1355 | "Cannot create software directory: %s" % e) |
|---|
| 1356 | # The actual copying. Everything's converted into a url for copying. |
|---|
| 1357 | for pkg in pkgs: |
|---|
| 1358 | loc = pkg |
|---|
| 1359 | |
|---|
| 1360 | scheme, host, path = urlparse(loc)[0:3] |
|---|
| 1361 | dest = os.path.basename(path) |
|---|
| 1362 | if not scheme: |
|---|
| 1363 | if not loc.startswith('/'): |
|---|
| 1364 | loc = "/%s" % loc |
|---|
| 1365 | loc = "file://%s" %loc |
|---|
| 1366 | try: |
|---|
| 1367 | u = urlopen(loc) |
|---|
| 1368 | except Exception, e: |
|---|
| 1369 | raise service_error(service_error.req, |
|---|
| 1370 | "Cannot open %s: %s" % (loc, e)) |
|---|
| 1371 | try: |
|---|
| 1372 | f = open("%s/%s" % (softdir, dest) , "w") |
|---|
| 1373 | self.log.debug("Writing %s/%s" % (softdir,dest) ) |
|---|
| 1374 | data = u.read(4096) |
|---|
| 1375 | while data: |
|---|
| 1376 | f.write(data) |
|---|
| 1377 | data = u.read(4096) |
|---|
| 1378 | f.close() |
|---|
| 1379 | u.close() |
|---|
| 1380 | except Exception, e: |
|---|
| 1381 | raise service_error(service_error.internal, |
|---|
| 1382 | "Could not copy %s: %s" % (loc, e)) |
|---|
| 1383 | path = re.sub("/tmp", "", linkpath) |
|---|
| 1384 | # XXX |
|---|
| 1385 | softmap[pkg] = \ |
|---|
| 1386 | "%s/%s/%s" %\ |
|---|
| 1387 | ( self.repo_url, path, dest) |
|---|
| 1388 | |
|---|
| 1389 | # Allow the individual segments to access the software. |
|---|
| 1390 | for tb in tbparams.keys(): |
|---|
| 1391 | self.auth.set_attribute(tbparams[tb]['allocID']['fedid'], |
|---|
| 1392 | "/%s/%s" % ( path, dest)) |
|---|
| 1393 | |
|---|
| 1394 | # Convert the software locations in the segments into the local |
|---|
| 1395 | # copies on this host |
|---|
| 1396 | for soft in [ s for tb in topo.values() \ |
|---|
| 1397 | for e in tb.elements \ |
|---|
| 1398 | if getattr(e, 'software', False) \ |
|---|
| 1399 | for s in e.software ]: |
|---|
| 1400 | if softmap.has_key(soft.location): |
|---|
| 1401 | soft.location = softmap[soft.location] |
|---|
| 1402 | |
|---|
| 1403 | |
|---|
| 1404 | def new_experiment(self, req, fid): |
|---|
| 1405 | """ |
|---|
| 1406 | The external interface to empty initial experiment creation called from |
|---|
| 1407 | the dispatcher. |
|---|
| 1408 | |
|---|
| 1409 | Creates a working directory, splits the incoming description using the |
|---|
| 1410 | splitter script and parses out the avrious subsections using the |
|---|
| 1411 | lcasses above. Once each sub-experiment is created, use pooled threads |
|---|
| 1412 | to instantiate them and start it all up. |
|---|
| 1413 | """ |
|---|
| 1414 | if not self.auth.check_attribute(fid, 'new'): |
|---|
| 1415 | raise service_error(service_error.access, "New access denied") |
|---|
| 1416 | |
|---|
| 1417 | try: |
|---|
| 1418 | tmpdir = tempfile.mkdtemp(prefix="split-") |
|---|
| 1419 | except IOError: |
|---|
| 1420 | raise service_error(service_error.internal, "Cannot create tmp dir") |
|---|
| 1421 | |
|---|
| 1422 | try: |
|---|
| 1423 | access_user = self.accessdb[fid] |
|---|
| 1424 | except KeyError: |
|---|
| 1425 | raise service_error(service_error.internal, |
|---|
| 1426 | "Access map and authorizer out of sync in " + \ |
|---|
| 1427 | "new_experiment for fedid %s" % fid) |
|---|
| 1428 | |
|---|
| 1429 | pid = "dummy" |
|---|
| 1430 | gid = "dummy" |
|---|
| 1431 | |
|---|
| 1432 | req = req.get('NewRequestBody', None) |
|---|
| 1433 | if not req: |
|---|
| 1434 | raise service_error(service_error.req, |
|---|
| 1435 | "Bad request format (no NewRequestBody)") |
|---|
| 1436 | |
|---|
| 1437 | # Generate an ID for the experiment (slice) and a certificate that the |
|---|
| 1438 | # allocator can use to prove they own it. We'll ship it back through |
|---|
| 1439 | # the encrypted connection. |
|---|
| 1440 | (expid, expcert) = generate_fedid("test", dir=tmpdir, log=self.log) |
|---|
| 1441 | |
|---|
| 1442 | #now we're done with the tmpdir, and it should be empty |
|---|
| 1443 | if self.cleanup: |
|---|
| 1444 | self.log.debug("[new_experiment]: removing %s" % tmpdir) |
|---|
| 1445 | os.rmdir(tmpdir) |
|---|
| 1446 | else: |
|---|
| 1447 | self.log.debug("[new_experiment]: not removing %s" % tmpdir) |
|---|
| 1448 | |
|---|
| 1449 | eid = self.create_experiment_state(fid, req, expid, expcert, |
|---|
| 1450 | state='empty') |
|---|
| 1451 | |
|---|
| 1452 | # Let users touch the state |
|---|
| 1453 | self.auth.set_attribute(fid, expid) |
|---|
| 1454 | self.auth.set_attribute(expid, expid) |
|---|
| 1455 | # Override fedids can manipulate state as well |
|---|
| 1456 | for o in self.overrides: |
|---|
| 1457 | self.auth.set_attribute(o, expid) |
|---|
| 1458 | |
|---|
| 1459 | rv = { |
|---|
| 1460 | 'experimentID': [ |
|---|
| 1461 | {'localname' : eid }, { 'fedid': copy.copy(expid) } |
|---|
| 1462 | ], |
|---|
| 1463 | 'experimentStatus': 'empty', |
|---|
| 1464 | 'experimentAccess': { 'X509' : expcert } |
|---|
| 1465 | } |
|---|
| 1466 | |
|---|
| 1467 | return rv |
|---|
| 1468 | |
|---|
| 1469 | def get_master_project(self, req): |
|---|
| 1470 | master= None |
|---|
| 1471 | export_project = None |
|---|
| 1472 | for e in [ s for s in req.get('service', []) \ |
|---|
| 1473 | if s.get('name') == 'project_export']: |
|---|
| 1474 | for a in e.get('fedAttr', []): |
|---|
| 1475 | attr = a.get('attribute', None) |
|---|
| 1476 | if attr == 'testbed': |
|---|
| 1477 | master = a.get('value', None) |
|---|
| 1478 | elif attr == 'project': |
|---|
| 1479 | export_project = a.get('value', None) |
|---|
| 1480 | |
|---|
| 1481 | return (master, export_project) |
|---|
| 1482 | |
|---|
| 1483 | |
|---|
| 1484 | |
|---|
| 1485 | def create_experiment(self, req, fid): |
|---|
| 1486 | """ |
|---|
| 1487 | The external interface to experiment creation called from the |
|---|
| 1488 | dispatcher. |
|---|
| 1489 | |
|---|
| 1490 | Creates a working directory, splits the incoming description using the |
|---|
| 1491 | splitter script and parses out the avrious subsections using the |
|---|
| 1492 | lcasses above. Once each sub-experiment is created, use pooled threads |
|---|
| 1493 | to instantiate them and start it all up. |
|---|
| 1494 | """ |
|---|
| 1495 | |
|---|
| 1496 | req = req.get('CreateRequestBody', None) |
|---|
| 1497 | if not req: |
|---|
| 1498 | raise service_error(service_error.req, |
|---|
| 1499 | "Bad request format (no CreateRequestBody)") |
|---|
| 1500 | |
|---|
| 1501 | # Get the experiment access |
|---|
| 1502 | exp = req.get('experimentID', None) |
|---|
| 1503 | if exp: |
|---|
| 1504 | if exp.has_key('fedid'): |
|---|
| 1505 | key = exp['fedid'] |
|---|
| 1506 | expid = key |
|---|
| 1507 | eid = None |
|---|
| 1508 | elif exp.has_key('localname'): |
|---|
| 1509 | key = exp['localname'] |
|---|
| 1510 | eid = key |
|---|
| 1511 | expid = None |
|---|
| 1512 | else: |
|---|
| 1513 | raise service_error(service_error.req, "Unknown lookup type") |
|---|
| 1514 | else: |
|---|
| 1515 | raise service_error(service_error.req, "No request?") |
|---|
| 1516 | |
|---|
| 1517 | self.check_experiment_access(fid, key) |
|---|
| 1518 | |
|---|
| 1519 | try: |
|---|
| 1520 | tmpdir = tempfile.mkdtemp(prefix="split-") |
|---|
| 1521 | os.mkdir(tmpdir+"/keys") |
|---|
| 1522 | except IOError: |
|---|
| 1523 | raise service_error(service_error.internal, "Cannot create tmp dir") |
|---|
| 1524 | |
|---|
| 1525 | gw_pubkey_base = "fed.%s.pub" % self.ssh_type |
|---|
| 1526 | gw_secretkey_base = "fed.%s" % self.ssh_type |
|---|
| 1527 | gw_pubkey = tmpdir + "/keys/" + gw_pubkey_base |
|---|
| 1528 | gw_secretkey = tmpdir + "/keys/" + gw_secretkey_base |
|---|
| 1529 | tclfile = tmpdir + "/experiment.tcl" |
|---|
| 1530 | tbparams = { } |
|---|
| 1531 | try: |
|---|
| 1532 | access_user = self.accessdb[fid] |
|---|
| 1533 | except KeyError: |
|---|
| 1534 | raise service_error(service_error.internal, |
|---|
| 1535 | "Access map and authorizer out of sync in " + \ |
|---|
| 1536 | "create_experiment for fedid %s" % fid) |
|---|
| 1537 | |
|---|
| 1538 | pid = "dummy" |
|---|
| 1539 | gid = "dummy" |
|---|
| 1540 | |
|---|
| 1541 | # The tcl parser needs to read a file so put the content into that file |
|---|
| 1542 | descr=req.get('experimentdescription', None) |
|---|
| 1543 | if descr: |
|---|
| 1544 | file_content=descr.get('ns2description', None) |
|---|
| 1545 | if file_content: |
|---|
| 1546 | try: |
|---|
| 1547 | f = open(tclfile, 'w') |
|---|
| 1548 | f.write(file_content) |
|---|
| 1549 | f.close() |
|---|
| 1550 | except IOError: |
|---|
| 1551 | raise service_error(service_error.internal, |
|---|
| 1552 | "Cannot write temp experiment description") |
|---|
| 1553 | else: |
|---|
| 1554 | raise service_error(service_error.req, |
|---|
| 1555 | "Only ns2descriptions supported") |
|---|
| 1556 | else: |
|---|
| 1557 | raise service_error(service_error.req, "No experiment description") |
|---|
| 1558 | |
|---|
| 1559 | self.state_lock.acquire() |
|---|
| 1560 | if self.state.has_key(key): |
|---|
| 1561 | self.state[key]['experimentStatus'] = "starting" |
|---|
| 1562 | for e in self.state[key].get('experimentID',[]): |
|---|
| 1563 | if not expid and e.has_key('fedid'): |
|---|
| 1564 | expid = e['fedid'] |
|---|
| 1565 | elif not eid and e.has_key('localname'): |
|---|
| 1566 | eid = e['localname'] |
|---|
| 1567 | self.state_lock.release() |
|---|
| 1568 | |
|---|
| 1569 | if not (eid and expid): |
|---|
| 1570 | raise service_error(service_error.internal, |
|---|
| 1571 | "Cannot find local experiment info!?") |
|---|
| 1572 | |
|---|
| 1573 | try: |
|---|
| 1574 | # This catches exceptions to clear the placeholder if necessary |
|---|
| 1575 | try: |
|---|
| 1576 | self.generate_ssh_keys(gw_secretkey, self.ssh_type) |
|---|
| 1577 | except ValueError: |
|---|
| 1578 | raise service_error(service_error.server_config, |
|---|
| 1579 | "Bad key type (%s)" % self.ssh_type) |
|---|
| 1580 | master, export_project = self.get_master_project(req) |
|---|
| 1581 | # XXX get these out when master and project are optional |
|---|
| 1582 | if not master: |
|---|
| 1583 | raise service_error(service_error.req, |
|---|
| 1584 | "No master testbed label") |
|---|
| 1585 | if not export_project: |
|---|
| 1586 | raise service_error(service_error.req, "No export project") |
|---|
| 1587 | # XXX |
|---|
| 1588 | |
|---|
| 1589 | # Translate to topdl |
|---|
| 1590 | if self.splitter_url: |
|---|
| 1591 | # XXX: need remote topdl translator |
|---|
| 1592 | self.log.debug("Calling remote splitter at %s" % \ |
|---|
| 1593 | self.splitter_url) |
|---|
| 1594 | top = self.remote_ns2topdl(self.splitter_url, file_content) |
|---|
| 1595 | else: |
|---|
| 1596 | tclcmd = [self.tclsh, self.tcl_splitter, '-t', '-x', |
|---|
| 1597 | str(self.muxmax), '-m', master] |
|---|
| 1598 | |
|---|
| 1599 | tclcmd.extend([pid, gid, eid, tclfile]) |
|---|
| 1600 | |
|---|
| 1601 | self.log.debug("running local splitter %s", " ".join(tclcmd)) |
|---|
| 1602 | # This is just fantastic. As a side effect the parser copies |
|---|
| 1603 | # tb_compat.tcl into the current directory, so that directory |
|---|
| 1604 | # must be writable by the fedd user. Doing this in the |
|---|
| 1605 | # temporary subdir ensures this is the case. |
|---|
| 1606 | tclparser = Popen(tclcmd, stdout=PIPE, close_fds=True, |
|---|
| 1607 | cwd=tmpdir) |
|---|
| 1608 | split_data = tclparser.stdout |
|---|
| 1609 | |
|---|
| 1610 | top = topdl.topology_from_xml(file=split_data, top="experiment") |
|---|
| 1611 | |
|---|
| 1612 | hosts, ip_allocator = self.allocate_ips_to_topo(top) |
|---|
| 1613 | # Find the testbeds to look up |
|---|
| 1614 | testbeds = set([ a.value for e in top.elements \ |
|---|
| 1615 | for a in e.attribute \ |
|---|
| 1616 | if a.attribute == 'testbed'] ) |
|---|
| 1617 | |
|---|
| 1618 | allocated = { } # Testbeds we can access |
|---|
| 1619 | topo ={ } # Sub topologies |
|---|
| 1620 | connInfo = { } # Connection information |
|---|
| 1621 | services = [ ] |
|---|
| 1622 | self.get_access_to_testbeds(testbeds, access_user, |
|---|
| 1623 | export_project, master, allocated, tbparams, services) |
|---|
| 1624 | self.split_topology(top, topo, testbeds) |
|---|
| 1625 | |
|---|
| 1626 | # Copy configuration files into the remote file store |
|---|
| 1627 | # The config urlpath |
|---|
| 1628 | configpath = "/%s/config" % expid |
|---|
| 1629 | # The config file system location |
|---|
| 1630 | configdir ="%s%s" % ( self.repodir, configpath) |
|---|
| 1631 | try: |
|---|
| 1632 | os.makedirs(configdir) |
|---|
| 1633 | except IOError, e: |
|---|
| 1634 | raise service_error( |
|---|
| 1635 | "Cannot create config directory: %s" % e) |
|---|
| 1636 | try: |
|---|
| 1637 | f = open("%s/hosts" % configdir, "w") |
|---|
| 1638 | f.write('\n'.join(hosts)) |
|---|
| 1639 | f.close() |
|---|
| 1640 | except IOError, e: |
|---|
| 1641 | raise service_error(service_error.internal, |
|---|
| 1642 | "Cannot write hosts file: %s" % e) |
|---|
| 1643 | try: |
|---|
| 1644 | copy_file("%s" % gw_pubkey, "%s/%s" % \ |
|---|
| 1645 | (configdir, gw_pubkey_base)) |
|---|
| 1646 | copy_file("%s" % gw_secretkey, "%s/%s" % \ |
|---|
| 1647 | (configdir, gw_secretkey_base)) |
|---|
| 1648 | except IOError, e: |
|---|
| 1649 | raise service_error(service_error.internal, |
|---|
| 1650 | "Cannot copy keyfiles: %s" % e) |
|---|
| 1651 | |
|---|
| 1652 | # Allow the individual testbeds to access the configuration files. |
|---|
| 1653 | for tb in tbparams.keys(): |
|---|
| 1654 | asignee = tbparams[tb]['allocID']['fedid'] |
|---|
| 1655 | for f in ("hosts", gw_secretkey_base, gw_pubkey_base): |
|---|
| 1656 | self.auth.set_attribute(asignee, "%s/%s" % (configpath, f)) |
|---|
| 1657 | |
|---|
| 1658 | part = experiment_partition(self.auth, self.store_url, self.tbmap, |
|---|
| 1659 | self.muxmax) |
|---|
| 1660 | part.add_portals(top, topo, eid, master, tbparams, ip_allocator, |
|---|
| 1661 | connInfo, expid) |
|---|
| 1662 | # Now get access to the dynamic testbeds |
|---|
| 1663 | for k, t in topo.items(): |
|---|
| 1664 | if not t.get_attribute('dynamic'): |
|---|
| 1665 | continue |
|---|
| 1666 | tb = t.get_attribute('testbed') |
|---|
| 1667 | if tb: |
|---|
| 1668 | self.get_access(tb, None, tbparams, master, |
|---|
| 1669 | export_project, access_user, services) |
|---|
| 1670 | tbparams[k] = tbparams[tb] |
|---|
| 1671 | del tbparams[tb] |
|---|
| 1672 | allocated[k] = 1 |
|---|
| 1673 | store_keys = t.get_attribute('store_keys') |
|---|
| 1674 | # Give the testbed access to keys it exports or imports |
|---|
| 1675 | if store_keys: |
|---|
| 1676 | for sk in store_keys.split(" "): |
|---|
| 1677 | self.auth.set_attribute(\ |
|---|
| 1678 | tbparams[k]['allocID']['fedid'], sk) |
|---|
| 1679 | else: |
|---|
| 1680 | raise service_error(service_error.internal, |
|---|
| 1681 | "Dynamic allocation from no testbed!?") |
|---|
| 1682 | |
|---|
| 1683 | self.wrangle_software(expid, top, topo, tbparams) |
|---|
| 1684 | |
|---|
| 1685 | vtopo = topdl.topology_to_vtopo(top) |
|---|
| 1686 | vis = self.genviz(vtopo) |
|---|
| 1687 | |
|---|
| 1688 | # save federant information |
|---|
| 1689 | for k in allocated.keys(): |
|---|
| 1690 | tbparams[k]['federant'] = { |
|---|
| 1691 | 'name': [ { 'localname' : eid} ], |
|---|
| 1692 | 'allocID' : tbparams[k]['allocID'], |
|---|
| 1693 | 'master' : k == master, |
|---|
| 1694 | 'uri': tbparams[k]['uri'], |
|---|
| 1695 | } |
|---|
| 1696 | if tbparams[k].has_key('emulab'): |
|---|
| 1697 | tbparams[k]['federant']['emulab'] = \ |
|---|
| 1698 | tbparams[k]['emulab'] |
|---|
| 1699 | |
|---|
| 1700 | self.state_lock.acquire() |
|---|
| 1701 | self.state[eid]['vtopo'] = vtopo |
|---|
| 1702 | self.state[eid]['vis'] = vis |
|---|
| 1703 | self.state[expid]['federant'] = \ |
|---|
| 1704 | [ tbparams[tb]['federant'] for tb in tbparams.keys() \ |
|---|
| 1705 | if tbparams[tb].has_key('federant') ] |
|---|
| 1706 | if self.state_filename: |
|---|
| 1707 | self.write_state() |
|---|
| 1708 | self.state_lock.release() |
|---|
| 1709 | except service_error, e: |
|---|
| 1710 | # If something goes wrong in the parse (usually an access error) |
|---|
| 1711 | # clear the placeholder state. From here on out the code delays |
|---|
| 1712 | # exceptions. Failing at this point returns a fault to the remote |
|---|
| 1713 | # caller. |
|---|
| 1714 | |
|---|
| 1715 | self.state_lock.acquire() |
|---|
| 1716 | del self.state[eid] |
|---|
| 1717 | del self.state[expid] |
|---|
| 1718 | if self.state_filename: self.write_state() |
|---|
| 1719 | self.state_lock.release() |
|---|
| 1720 | raise e |
|---|
| 1721 | |
|---|
| 1722 | |
|---|
| 1723 | # Start the background swapper and return the starting state. From |
|---|
| 1724 | # here on out, the state will stick around a while. |
|---|
| 1725 | |
|---|
| 1726 | # Let users touch the state |
|---|
| 1727 | self.auth.set_attribute(fid, expid) |
|---|
| 1728 | self.auth.set_attribute(expid, expid) |
|---|
| 1729 | # Override fedids can manipulate state as well |
|---|
| 1730 | for o in self.overrides: |
|---|
| 1731 | self.auth.set_attribute(o, expid) |
|---|
| 1732 | |
|---|
| 1733 | # Create a logger that logs to the experiment's state object as well as |
|---|
| 1734 | # to the main log file. |
|---|
| 1735 | alloc_log = logging.getLogger('fedd.experiment_control.%s' % eid) |
|---|
| 1736 | alloc_collector = self.list_log(self.state[eid]['log']) |
|---|
| 1737 | h = logging.StreamHandler(alloc_collector) |
|---|
| 1738 | # XXX: there should be a global one of these rather than repeating the |
|---|
| 1739 | # code. |
|---|
| 1740 | h.setFormatter(logging.Formatter("%(asctime)s %(name)s %(message)s", |
|---|
| 1741 | '%d %b %y %H:%M:%S')) |
|---|
| 1742 | alloc_log.addHandler(h) |
|---|
| 1743 | |
|---|
| 1744 | attrs = [ |
|---|
| 1745 | { |
|---|
| 1746 | 'attribute': 'ssh_pubkey', |
|---|
| 1747 | 'value': '%s/%s/config/%s' % \ |
|---|
| 1748 | (self.repo_url, expid, gw_pubkey_base) |
|---|
| 1749 | }, |
|---|
| 1750 | { |
|---|
| 1751 | 'attribute': 'ssh_secretkey', |
|---|
| 1752 | 'value': '%s/%s/config/%s' % \ |
|---|
| 1753 | (self.repo_url, expid, gw_secretkey_base) |
|---|
| 1754 | }, |
|---|
| 1755 | { |
|---|
| 1756 | 'attribute': 'hosts', |
|---|
| 1757 | 'value': '%s/%s/config/hosts' % \ |
|---|
| 1758 | (self.repo_url, expid) |
|---|
| 1759 | }, |
|---|
| 1760 | { |
|---|
| 1761 | 'attribute': 'experiment_name', |
|---|
| 1762 | 'value': eid, |
|---|
| 1763 | }, |
|---|
| 1764 | ] |
|---|
| 1765 | |
|---|
| 1766 | # transit and disconnected testbeds may not have a connInfo entry. |
|---|
| 1767 | # Fill in the blanks. |
|---|
| 1768 | for t in allocated.keys(): |
|---|
| 1769 | if not connInfo.has_key(t): |
|---|
| 1770 | connInfo[t] = { } |
|---|
| 1771 | |
|---|
| 1772 | # Start a thread to do the resource allocation |
|---|
| 1773 | t = Thread(target=self.allocate_resources, |
|---|
| 1774 | args=(allocated, master, eid, expid, tbparams, |
|---|
| 1775 | topo, tmpdir, alloc_log, alloc_collector, attrs, connInfo, |
|---|
| 1776 | services), |
|---|
| 1777 | name=eid) |
|---|
| 1778 | t.start() |
|---|
| 1779 | |
|---|
| 1780 | rv = { |
|---|
| 1781 | 'experimentID': [ |
|---|
| 1782 | {'localname' : eid }, { 'fedid': copy.copy(expid) } |
|---|
| 1783 | ], |
|---|
| 1784 | 'experimentStatus': 'starting', |
|---|
| 1785 | } |
|---|
| 1786 | |
|---|
| 1787 | return rv |
|---|
| 1788 | |
|---|
| 1789 | def get_experiment_fedid(self, key): |
|---|
| 1790 | """ |
|---|
| 1791 | find the fedid associated with the localname key in the state database. |
|---|
| 1792 | """ |
|---|
| 1793 | |
|---|
| 1794 | rv = None |
|---|
| 1795 | self.state_lock.acquire() |
|---|
| 1796 | if self.state.has_key(key): |
|---|
| 1797 | if isinstance(self.state[key], dict): |
|---|
| 1798 | try: |
|---|
| 1799 | kl = [ f['fedid'] for f in \ |
|---|
| 1800 | self.state[key]['experimentID']\ |
|---|
| 1801 | if f.has_key('fedid') ] |
|---|
| 1802 | except KeyError: |
|---|
| 1803 | self.state_lock.release() |
|---|
| 1804 | raise service_error(service_error.internal, |
|---|
| 1805 | "No fedid for experiment %s when getting "+\ |
|---|
| 1806 | "fedid(!?)" % key) |
|---|
| 1807 | if len(kl) == 1: |
|---|
| 1808 | rv = kl[0] |
|---|
| 1809 | else: |
|---|
| 1810 | self.state_lock.release() |
|---|
| 1811 | raise service_error(service_error.internal, |
|---|
| 1812 | "multiple fedids for experiment %s when " +\ |
|---|
| 1813 | "getting fedid(!?)" % key) |
|---|
| 1814 | else: |
|---|
| 1815 | self.state_lock.release() |
|---|
| 1816 | raise service_error(service_error.internal, |
|---|
| 1817 | "Unexpected state for %s" % key) |
|---|
| 1818 | self.state_lock.release() |
|---|
| 1819 | return rv |
|---|
| 1820 | |
|---|
| 1821 | def check_experiment_access(self, fid, key): |
|---|
| 1822 | """ |
|---|
| 1823 | Confirm that the fid has access to the experiment. Though a request |
|---|
| 1824 | may be made in terms of a local name, the access attribute is always |
|---|
| 1825 | the experiment's fedid. |
|---|
| 1826 | """ |
|---|
| 1827 | if not isinstance(key, fedid): |
|---|
| 1828 | key = self.get_experiment_fedid(key) |
|---|
| 1829 | |
|---|
| 1830 | if self.auth.check_attribute(fid, key): |
|---|
| 1831 | return True |
|---|
| 1832 | else: |
|---|
| 1833 | raise service_error(service_error.access, "Access Denied") |
|---|
| 1834 | |
|---|
| 1835 | |
|---|
| 1836 | def get_handler(self, path, fid): |
|---|
| 1837 | self.log.info("Get handler %s %s" % (path, fid)) |
|---|
| 1838 | if self.auth.check_attribute(fid, path): |
|---|
| 1839 | return ("%s/%s" % (self.repodir, path), "application/binary") |
|---|
| 1840 | else: |
|---|
| 1841 | return (None, None) |
|---|
| 1842 | |
|---|
| 1843 | def get_vtopo(self, req, fid): |
|---|
| 1844 | """ |
|---|
| 1845 | Return the stored virtual topology for this experiment |
|---|
| 1846 | """ |
|---|
| 1847 | rv = None |
|---|
| 1848 | state = None |
|---|
| 1849 | |
|---|
| 1850 | req = req.get('VtopoRequestBody', None) |
|---|
| 1851 | if not req: |
|---|
| 1852 | raise service_error(service_error.req, |
|---|
| 1853 | "Bad request format (no VtopoRequestBody)") |
|---|
| 1854 | exp = req.get('experiment', None) |
|---|
| 1855 | if exp: |
|---|
| 1856 | if exp.has_key('fedid'): |
|---|
| 1857 | key = exp['fedid'] |
|---|
| 1858 | keytype = "fedid" |
|---|
| 1859 | elif exp.has_key('localname'): |
|---|
| 1860 | key = exp['localname'] |
|---|
| 1861 | keytype = "localname" |
|---|
| 1862 | else: |
|---|
| 1863 | raise service_error(service_error.req, "Unknown lookup type") |
|---|
| 1864 | else: |
|---|
| 1865 | raise service_error(service_error.req, "No request?") |
|---|
| 1866 | |
|---|
| 1867 | self.check_experiment_access(fid, key) |
|---|
| 1868 | |
|---|
| 1869 | self.state_lock.acquire() |
|---|
| 1870 | if self.state.has_key(key): |
|---|
| 1871 | if self.state[key].has_key('vtopo'): |
|---|
| 1872 | rv = { 'experiment' : {keytype: key },\ |
|---|
| 1873 | 'vtopo': self.state[key]['vtopo'],\ |
|---|
| 1874 | } |
|---|
| 1875 | else: |
|---|
| 1876 | state = self.state[key]['experimentStatus'] |
|---|
| 1877 | self.state_lock.release() |
|---|
| 1878 | |
|---|
| 1879 | if rv: return rv |
|---|
| 1880 | else: |
|---|
| 1881 | if state: |
|---|
| 1882 | raise service_error(service_error.partial, |
|---|
| 1883 | "Not ready: %s" % state) |
|---|
| 1884 | else: |
|---|
| 1885 | raise service_error(service_error.req, "No such experiment") |
|---|
| 1886 | |
|---|
| 1887 | def get_vis(self, req, fid): |
|---|
| 1888 | """ |
|---|
| 1889 | Return the stored visualization for this experiment |
|---|
| 1890 | """ |
|---|
| 1891 | rv = None |
|---|
| 1892 | state = None |
|---|
| 1893 | |
|---|
| 1894 | req = req.get('VisRequestBody', None) |
|---|
| 1895 | if not req: |
|---|
| 1896 | raise service_error(service_error.req, |
|---|
| 1897 | "Bad request format (no VisRequestBody)") |
|---|
| 1898 | exp = req.get('experiment', None) |
|---|
| 1899 | if exp: |
|---|
| 1900 | if exp.has_key('fedid'): |
|---|
| 1901 | key = exp['fedid'] |
|---|
| 1902 | keytype = "fedid" |
|---|
| 1903 | elif exp.has_key('localname'): |
|---|
| 1904 | key = exp['localname'] |
|---|
| 1905 | keytype = "localname" |
|---|
| 1906 | else: |
|---|
| 1907 | raise service_error(service_error.req, "Unknown lookup type") |
|---|
| 1908 | else: |
|---|
| 1909 | raise service_error(service_error.req, "No request?") |
|---|
| 1910 | |
|---|
| 1911 | self.check_experiment_access(fid, key) |
|---|
| 1912 | |
|---|
| 1913 | self.state_lock.acquire() |
|---|
| 1914 | if self.state.has_key(key): |
|---|
| 1915 | if self.state[key].has_key('vis'): |
|---|
| 1916 | rv = { 'experiment' : {keytype: key },\ |
|---|
| 1917 | 'vis': self.state[key]['vis'],\ |
|---|
| 1918 | } |
|---|
| 1919 | else: |
|---|
| 1920 | state = self.state[key]['experimentStatus'] |
|---|
| 1921 | self.state_lock.release() |
|---|
| 1922 | |
|---|
| 1923 | if rv: return rv |
|---|
| 1924 | else: |
|---|
| 1925 | if state: |
|---|
| 1926 | raise service_error(service_error.partial, |
|---|
| 1927 | "Not ready: %s" % state) |
|---|
| 1928 | else: |
|---|
| 1929 | raise service_error(service_error.req, "No such experiment") |
|---|
| 1930 | |
|---|
| 1931 | def clean_info_response(self, rv): |
|---|
| 1932 | """ |
|---|
| 1933 | Remove the information in the experiment's state object that is not in |
|---|
| 1934 | the info response. |
|---|
| 1935 | """ |
|---|
| 1936 | # Remove the owner info (should always be there, but...) |
|---|
| 1937 | if rv.has_key('owner'): del rv['owner'] |
|---|
| 1938 | |
|---|
| 1939 | # Convert the log into the allocationLog parameter and remove the |
|---|
| 1940 | # log entry (with defensive programming) |
|---|
| 1941 | if rv.has_key('log'): |
|---|
| 1942 | rv['allocationLog'] = "".join(rv['log']) |
|---|
| 1943 | del rv['log'] |
|---|
| 1944 | else: |
|---|
| 1945 | rv['allocationLog'] = "" |
|---|
| 1946 | |
|---|
| 1947 | if rv['experimentStatus'] != 'active': |
|---|
| 1948 | if rv.has_key('federant'): del rv['federant'] |
|---|
| 1949 | else: |
|---|
| 1950 | # remove the allocationID and uri info from each federant |
|---|
| 1951 | for f in rv.get('federant', []): |
|---|
| 1952 | if f.has_key('allocID'): del f['allocID'] |
|---|
| 1953 | if f.has_key('uri'): del f['uri'] |
|---|
| 1954 | return rv |
|---|
| 1955 | |
|---|
| 1956 | def get_info(self, req, fid): |
|---|
| 1957 | """ |
|---|
| 1958 | Return all the stored info about this experiment |
|---|
| 1959 | """ |
|---|
| 1960 | rv = None |
|---|
| 1961 | |
|---|
| 1962 | req = req.get('InfoRequestBody', None) |
|---|
| 1963 | if not req: |
|---|
| 1964 | raise service_error(service_error.req, |
|---|
| 1965 | "Bad request format (no InfoRequestBody)") |
|---|
| 1966 | exp = req.get('experiment', None) |
|---|
| 1967 | if exp: |
|---|
| 1968 | if exp.has_key('fedid'): |
|---|
| 1969 | key = exp['fedid'] |
|---|
| 1970 | keytype = "fedid" |
|---|
| 1971 | elif exp.has_key('localname'): |
|---|
| 1972 | key = exp['localname'] |
|---|
| 1973 | keytype = "localname" |
|---|
| 1974 | else: |
|---|
| 1975 | raise service_error(service_error.req, "Unknown lookup type") |
|---|
| 1976 | else: |
|---|
| 1977 | raise service_error(service_error.req, "No request?") |
|---|
| 1978 | |
|---|
| 1979 | self.check_experiment_access(fid, key) |
|---|
| 1980 | |
|---|
| 1981 | # The state may be massaged by the service function that called |
|---|
| 1982 | # get_info (e.g., encoded for XMLRPC transport) so send a copy of the |
|---|
| 1983 | # state. |
|---|
| 1984 | self.state_lock.acquire() |
|---|
| 1985 | if self.state.has_key(key): |
|---|
| 1986 | rv = copy.deepcopy(self.state[key]) |
|---|
| 1987 | self.state_lock.release() |
|---|
| 1988 | |
|---|
| 1989 | if rv: |
|---|
| 1990 | return self.clean_info_response(rv) |
|---|
| 1991 | else: |
|---|
| 1992 | raise service_error(service_error.req, "No such experiment") |
|---|
| 1993 | |
|---|
| 1994 | def get_multi_info(self, req, fid): |
|---|
| 1995 | """ |
|---|
| 1996 | Return all the stored info that this fedid can access |
|---|
| 1997 | """ |
|---|
| 1998 | rv = { 'info': [ ] } |
|---|
| 1999 | |
|---|
| 2000 | self.state_lock.acquire() |
|---|
| 2001 | for key in [ k for k in self.state.keys() if isinstance(k, fedid)]: |
|---|
| 2002 | try: |
|---|
| 2003 | self.check_experiment_access(fid, key) |
|---|
| 2004 | except service_error, e: |
|---|
| 2005 | if e.code == service_error.access: |
|---|
| 2006 | continue |
|---|
| 2007 | else: |
|---|
| 2008 | self.state_lock.release() |
|---|
| 2009 | raise e |
|---|
| 2010 | |
|---|
| 2011 | if self.state.has_key(key): |
|---|
| 2012 | e = copy.deepcopy(self.state[key]) |
|---|
| 2013 | e = self.clean_info_response(e) |
|---|
| 2014 | rv['info'].append(e) |
|---|
| 2015 | self.state_lock.release() |
|---|
| 2016 | return rv |
|---|
| 2017 | |
|---|
| 2018 | def terminate_experiment(self, req, fid): |
|---|
| 2019 | """ |
|---|
| 2020 | Swap this experiment out on the federants and delete the shared |
|---|
| 2021 | information |
|---|
| 2022 | """ |
|---|
| 2023 | tbparams = { } |
|---|
| 2024 | req = req.get('TerminateRequestBody', None) |
|---|
| 2025 | if not req: |
|---|
| 2026 | raise service_error(service_error.req, |
|---|
| 2027 | "Bad request format (no TerminateRequestBody)") |
|---|
| 2028 | force = req.get('force', False) |
|---|
| 2029 | exp = req.get('experiment', None) |
|---|
| 2030 | if exp: |
|---|
| 2031 | if exp.has_key('fedid'): |
|---|
| 2032 | key = exp['fedid'] |
|---|
| 2033 | keytype = "fedid" |
|---|
| 2034 | elif exp.has_key('localname'): |
|---|
| 2035 | key = exp['localname'] |
|---|
| 2036 | keytype = "localname" |
|---|
| 2037 | else: |
|---|
| 2038 | raise service_error(service_error.req, "Unknown lookup type") |
|---|
| 2039 | else: |
|---|
| 2040 | raise service_error(service_error.req, "No request?") |
|---|
| 2041 | |
|---|
| 2042 | self.check_experiment_access(fid, key) |
|---|
| 2043 | |
|---|
| 2044 | dealloc_list = [ ] |
|---|
| 2045 | |
|---|
| 2046 | |
|---|
| 2047 | # Create a logger that logs to the dealloc_list as well as to the main |
|---|
| 2048 | # log file. |
|---|
| 2049 | dealloc_log = logging.getLogger('fedd.experiment_control.%s' % key) |
|---|
| 2050 | h = logging.StreamHandler(self.list_log(dealloc_list)) |
|---|
| 2051 | # XXX: there should be a global one of these rather than repeating the |
|---|
| 2052 | # code. |
|---|
| 2053 | h.setFormatter(logging.Formatter("%(asctime)s %(name)s %(message)s", |
|---|
| 2054 | '%d %b %y %H:%M:%S')) |
|---|
| 2055 | dealloc_log.addHandler(h) |
|---|
| 2056 | |
|---|
| 2057 | self.state_lock.acquire() |
|---|
| 2058 | fed_exp = self.state.get(key, None) |
|---|
| 2059 | |
|---|
| 2060 | if fed_exp: |
|---|
| 2061 | # This branch of the conditional holds the lock to generate a |
|---|
| 2062 | # consistent temporary tbparams variable to deallocate experiments. |
|---|
| 2063 | # It releases the lock to do the deallocations and reacquires it to |
|---|
| 2064 | # remove the experiment state when the termination is complete. |
|---|
| 2065 | |
|---|
| 2066 | # First make sure that the experiment creation is complete. |
|---|
| 2067 | status = fed_exp.get('experimentStatus', None) |
|---|
| 2068 | |
|---|
| 2069 | if status: |
|---|
| 2070 | if status in ('starting', 'terminating'): |
|---|
| 2071 | if not force: |
|---|
| 2072 | self.state_lock.release() |
|---|
| 2073 | raise service_error(service_error.partial, |
|---|
| 2074 | 'Experiment still being created or destroyed') |
|---|
| 2075 | else: |
|---|
| 2076 | self.log.warning('Experiment in %s state ' % status + \ |
|---|
| 2077 | 'being terminated by force.') |
|---|
| 2078 | else: |
|---|
| 2079 | # No status??? trouble |
|---|
| 2080 | self.state_lock.release() |
|---|
| 2081 | raise service_error(service_error.internal, |
|---|
| 2082 | "Experiment has no status!?") |
|---|
| 2083 | |
|---|
| 2084 | ids = [] |
|---|
| 2085 | # experimentID is a list of dicts that are self-describing |
|---|
| 2086 | # identifiers. This finds all the fedids and localnames - the |
|---|
| 2087 | # keys of self.state - and puts them into ids. |
|---|
| 2088 | for id in fed_exp.get('experimentID', []): |
|---|
| 2089 | if id.has_key('fedid'): ids.append(id['fedid']) |
|---|
| 2090 | if id.has_key('localname'): ids.append(id['localname']) |
|---|
| 2091 | |
|---|
| 2092 | # Collect the allocation/segment ids into a dict keyed by the fedid |
|---|
| 2093 | # of the allocation (or a monotonically increasing integer) that |
|---|
| 2094 | # contains a tuple of uri, aid (which is a dict...) |
|---|
| 2095 | for i, fed in enumerate(fed_exp.get('federant', [])): |
|---|
| 2096 | try: |
|---|
| 2097 | uri = fed['uri'] |
|---|
| 2098 | aid = fed['allocID'] |
|---|
| 2099 | k = fed['allocID'].get('fedid', i) |
|---|
| 2100 | except KeyError, e: |
|---|
| 2101 | continue |
|---|
| 2102 | tbparams[k] = (uri, aid) |
|---|
| 2103 | fed_exp['experimentStatus'] = 'terminating' |
|---|
| 2104 | if self.state_filename: self.write_state() |
|---|
| 2105 | self.state_lock.release() |
|---|
| 2106 | |
|---|
| 2107 | # Stop everyone. NB, wait_for_all waits until a thread starts and |
|---|
| 2108 | # then completes, so we can't wait if nothing starts. So, no |
|---|
| 2109 | # tbparams, no start. |
|---|
| 2110 | if len(tbparams) > 0: |
|---|
| 2111 | thread_pool = self.thread_pool(self.nthreads) |
|---|
| 2112 | for k in tbparams.keys(): |
|---|
| 2113 | # Create and start a thread to stop the segment |
|---|
| 2114 | thread_pool.wait_for_slot() |
|---|
| 2115 | uri, aid = tbparams[k] |
|---|
| 2116 | t = self.pooled_thread(\ |
|---|
| 2117 | target=self.terminate_segment(log=dealloc_log, |
|---|
| 2118 | testbed=uri, |
|---|
| 2119 | cert_file=self.cert_file, |
|---|
| 2120 | cert_pwd=self.cert_pwd, |
|---|
| 2121 | trusted_certs=self.trusted_certs, |
|---|
| 2122 | caller=self.call_TerminateSegment), |
|---|
| 2123 | args=(uri, aid), name=k, |
|---|
| 2124 | pdata=thread_pool, trace_file=self.trace_file) |
|---|
| 2125 | t.start() |
|---|
| 2126 | # Wait for completions |
|---|
| 2127 | thread_pool.wait_for_all_done() |
|---|
| 2128 | |
|---|
| 2129 | # release the allocations (failed experiments have done this |
|---|
| 2130 | # already, and starting experiments may be in odd states, so we |
|---|
| 2131 | # ignore errors releasing those allocations |
|---|
| 2132 | try: |
|---|
| 2133 | for k in tbparams.keys(): |
|---|
| 2134 | # This releases access by uri |
|---|
| 2135 | uri, aid = tbparams[k] |
|---|
| 2136 | self.release_access(None, aid, uri=uri) |
|---|
| 2137 | except service_error, e: |
|---|
| 2138 | if status != 'failed' and not force: |
|---|
| 2139 | raise e |
|---|
| 2140 | |
|---|
| 2141 | # Remove the terminated experiment |
|---|
| 2142 | self.state_lock.acquire() |
|---|
| 2143 | for id in ids: |
|---|
| 2144 | if self.state.has_key(id): del self.state[id] |
|---|
| 2145 | |
|---|
| 2146 | if self.state_filename: self.write_state() |
|---|
| 2147 | self.state_lock.release() |
|---|
| 2148 | |
|---|
| 2149 | # Delete any synch points associated with this experiment. All |
|---|
| 2150 | # synch points begin with the fedid of the experiment. |
|---|
| 2151 | fedid_keys = set(["fedid:%s" % f for f in ids \ |
|---|
| 2152 | if isinstance(f, fedid)]) |
|---|
| 2153 | for k in self.synch_store.all_keys(): |
|---|
| 2154 | try: |
|---|
| 2155 | if len(k) > 45 and k[0:46] in fedid_keys: |
|---|
| 2156 | self.synch_store.del_value(k) |
|---|
| 2157 | except synch_store.BadDeletionError: |
|---|
| 2158 | pass |
|---|
| 2159 | self.write_store() |
|---|
| 2160 | |
|---|
| 2161 | return { |
|---|
| 2162 | 'experiment': exp , |
|---|
| 2163 | 'deallocationLog': "".join(dealloc_list), |
|---|
| 2164 | } |
|---|
| 2165 | else: |
|---|
| 2166 | # Don't forget to release the lock |
|---|
| 2167 | self.state_lock.release() |
|---|
| 2168 | raise service_error(service_error.req, "No saved state") |
|---|
| 2169 | |
|---|
| 2170 | |
|---|
| 2171 | def GetValue(self, req, fid): |
|---|
| 2172 | """ |
|---|
| 2173 | Get a value from the synchronized store |
|---|
| 2174 | """ |
|---|
| 2175 | req = req.get('GetValueRequestBody', None) |
|---|
| 2176 | if not req: |
|---|
| 2177 | raise service_error(service_error.req, |
|---|
| 2178 | "Bad request format (no GetValueRequestBody)") |
|---|
| 2179 | |
|---|
| 2180 | name = req['name'] |
|---|
| 2181 | wait = req['wait'] |
|---|
| 2182 | rv = { 'name': name } |
|---|
| 2183 | |
|---|
| 2184 | if self.auth.check_attribute(fid, name): |
|---|
| 2185 | try: |
|---|
| 2186 | v = self.synch_store.get_value(name, wait) |
|---|
| 2187 | except synch_store.RevokedKeyError: |
|---|
| 2188 | # No more synch on this key |
|---|
| 2189 | raise service_error(service_error.federant, |
|---|
| 2190 | "Synch key %s revoked" % name) |
|---|
| 2191 | if v is not None: |
|---|
| 2192 | rv['value'] = v |
|---|
| 2193 | self.log.debug("[GetValue] got %s from %s" % (v, name)) |
|---|
| 2194 | return rv |
|---|
| 2195 | else: |
|---|
| 2196 | raise service_error(service_error.access, "Access Denied") |
|---|
| 2197 | |
|---|
| 2198 | |
|---|
| 2199 | def SetValue(self, req, fid): |
|---|
| 2200 | """ |
|---|
| 2201 | Set a value in the synchronized store |
|---|
| 2202 | """ |
|---|
| 2203 | req = req.get('SetValueRequestBody', None) |
|---|
| 2204 | if not req: |
|---|
| 2205 | raise service_error(service_error.req, |
|---|
| 2206 | "Bad request format (no SetValueRequestBody)") |
|---|
| 2207 | |
|---|
| 2208 | name = req['name'] |
|---|
| 2209 | v = req['value'] |
|---|
| 2210 | |
|---|
| 2211 | if self.auth.check_attribute(fid, name): |
|---|
| 2212 | try: |
|---|
| 2213 | self.synch_store.set_value(name, v) |
|---|
| 2214 | self.write_store() |
|---|
| 2215 | self.log.debug("[SetValue] set %s to %s" % (name, v)) |
|---|
| 2216 | except synch_store.CollisionError: |
|---|
| 2217 | # Translate into a service_error |
|---|
| 2218 | raise service_error(service_error.req, |
|---|
| 2219 | "Value already set: %s" %name) |
|---|
| 2220 | except synch_store.RevokedKeyError: |
|---|
| 2221 | # No more synch on this key |
|---|
| 2222 | raise service_error(service_error.federant, |
|---|
| 2223 | "Synch key %s revoked" % name) |
|---|
| 2224 | return { 'name': name, 'value': v } |
|---|
| 2225 | else: |
|---|
| 2226 | raise service_error(service_error.access, "Access Denied") |
|---|
