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