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