1 | #!/usr/local/bin/python |
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2 | |
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3 | import os,sys |
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4 | |
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5 | import re |
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6 | import random |
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7 | import string |
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8 | import subprocess |
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9 | import tempfile |
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10 | import copy |
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11 | import pickle |
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12 | import logging |
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13 | import signal |
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14 | import time |
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15 | |
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16 | import traceback |
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17 | # For parsing visualization output and splitter output |
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18 | import xml.parsers.expat |
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19 | |
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20 | from threading import Lock, Thread, Condition |
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21 | from subprocess import call, Popen, PIPE |
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22 | from string import join |
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23 | |
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24 | from urlparse import urlparse |
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25 | from urllib2 import urlopen |
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26 | |
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27 | from util import * |
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28 | from fedid import fedid, generate_fedid |
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29 | from remote_service import xmlrpc_handler, soap_handler, service_caller |
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30 | from service_error import service_error |
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31 | from synch_store import synch_store |
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32 | from experiment_partition import experiment_partition |
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33 | from experiment_control_legacy import experiment_control_legacy |
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34 | from authorizer import abac_authorizer |
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35 | from thread_pool import thread_pool, pooled_thread |
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36 | |
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37 | import topdl |
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38 | import list_log |
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39 | from ip_allocator import ip_allocator |
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40 | from ip_addr import ip_addr |
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41 | |
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42 | |
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43 | class nullHandler(logging.Handler): |
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44 | def emit(self, record): pass |
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45 | |
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46 | fl = logging.getLogger("fedd.experiment_control") |
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47 | fl.addHandler(nullHandler()) |
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48 | |
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49 | |
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50 | # Right now, no support for composition. |
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51 | class federated_service: |
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52 | def __init__(self, name, exporter=None, importers=None, params=None, |
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53 | reqs=None, portal=None): |
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54 | self.name=name |
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55 | self.exporter=exporter |
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56 | if importers is None: self.importers = [] |
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57 | else: self.importers=importers |
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58 | if params is None: self.params = { } |
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59 | else: self.params = params |
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60 | if reqs is None: self.reqs = [] |
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61 | else: self.reqs = reqs |
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62 | |
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63 | if portal is not None: |
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64 | self.portal = portal |
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65 | else: |
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66 | self.portal = (name in federated_service.needs_portal) |
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67 | |
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68 | def __str__(self): |
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69 | return "name %s export %s import %s params %s reqs %s" % \ |
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70 | (self.name, self.exporter, self.importers, self.params, |
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71 | [ (r['name'], r['visibility']) for r in self.reqs] ) |
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72 | |
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73 | needs_portal = ('SMB', 'seer', 'tmcd', 'project_export', 'seer_master') |
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74 | |
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75 | class experiment_control_local(experiment_control_legacy): |
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76 | """ |
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77 | Control of experiments that this system can directly access. |
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78 | |
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79 | Includes experiment creation, termination and information dissemination. |
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80 | Thred safe. |
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81 | """ |
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82 | |
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83 | class ssh_cmd_timeout(RuntimeError): pass |
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84 | |
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85 | call_RequestAccess = service_caller('RequestAccess') |
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86 | call_ReleaseAccess = service_caller('ReleaseAccess') |
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87 | call_StartSegment = service_caller('StartSegment') |
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88 | call_TerminateSegment = service_caller('TerminateSegment') |
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89 | call_Ns2Topdl = service_caller('Ns2Topdl') |
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90 | |
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91 | def __init__(self, config=None, auth=None): |
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92 | """ |
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93 | Intialize the various attributes, most from the config object |
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94 | """ |
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95 | |
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96 | def parse_tarfile_list(tf): |
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97 | """ |
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98 | Parse a tarfile list from the configuration. This is a set of |
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99 | paths and tarfiles separated by spaces. |
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100 | """ |
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101 | rv = [ ] |
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102 | if tf is not None: |
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103 | tl = tf.split() |
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104 | while len(tl) > 1: |
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105 | p, t = tl[0:2] |
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106 | del tl[0:2] |
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107 | rv.append((p, t)) |
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108 | return rv |
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109 | |
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110 | self.list_log = list_log.list_log |
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111 | |
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112 | self.cert_file = config.get("experiment_control", "cert_file") |
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113 | if self.cert_file: |
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114 | self.cert_pwd = config.get("experiment_control", "cert_pwd") |
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115 | else: |
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116 | self.cert_file = config.get("globals", "cert_file") |
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117 | self.cert_pwd = config.get("globals", "cert_pwd") |
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118 | |
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119 | self.trusted_certs = config.get("experiment_control", "trusted_certs") \ |
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120 | or config.get("globals", "trusted_certs") |
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121 | |
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122 | self.repodir = config.get("experiment_control", "repodir") |
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123 | self.repo_url = config.get("experiment_control", "repo_url", |
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124 | "https://users.isi.deterlab.net:23235"); |
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125 | |
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126 | self.exp_stem = "fed-stem" |
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127 | self.log = logging.getLogger("fedd.experiment_control") |
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128 | set_log_level(config, "experiment_control", self.log) |
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129 | self.muxmax = 2 |
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130 | self.nthreads = 10 |
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131 | self.randomize_experiments = False |
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132 | |
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133 | self.splitter = None |
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134 | self.ssh_keygen = "/usr/bin/ssh-keygen" |
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135 | self.ssh_identity_file = None |
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136 | |
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137 | |
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138 | self.debug = config.getboolean("experiment_control", "create_debug") |
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139 | self.cleanup = not config.getboolean("experiment_control", |
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140 | "leave_tmpfiles") |
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141 | self.state_filename = config.get("experiment_control", |
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142 | "experiment_state") |
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143 | self.store_filename = config.get("experiment_control", |
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144 | "synch_store") |
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145 | self.store_url = config.get("experiment_control", "store_url") |
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146 | self.splitter_url = config.get("experiment_control", "ns2topdl_uri") |
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147 | self.fedkit = parse_tarfile_list(\ |
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148 | config.get("experiment_control", "fedkit")) |
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149 | self.gatewaykit = parse_tarfile_list(\ |
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150 | config.get("experiment_control", "gatewaykit")) |
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151 | accessdb_file = config.get("experiment_control", "accessdb") |
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152 | |
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153 | dt = config.get("experiment_control", "direct_transit") |
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154 | self.auth_type = config.get('experiment_control', 'auth_type') \ |
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155 | or 'legacy' |
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156 | self.auth_dir = config.get('experiment_control', 'auth_dir') |
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157 | if dt: self.direct_transit = [ tb.strip() for tb in dt.split(",")] |
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158 | else: self.direct_transit = [ ] |
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159 | # NB for internal master/slave ops, not experiment setup |
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160 | self.ssh_type = config.get("experiment_control", "sshkeytype", "rsa") |
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161 | |
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162 | self.overrides = set([]) |
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163 | ovr = config.get('experiment_control', 'overrides') |
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164 | if ovr: |
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165 | for o in ovr.split(","): |
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166 | o = o.strip() |
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167 | if o.startswith('fedid:'): o = o[len('fedid:'):] |
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168 | self.overrides.add(fedid(hexstr=o)) |
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169 | |
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170 | self.state = { } |
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171 | self.state_lock = Lock() |
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172 | self.tclsh = "/usr/local/bin/otclsh" |
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173 | self.tcl_splitter = config.get("ns2topdl", "tcl_splitter") or \ |
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174 | config.get("experiment_control", "tcl_splitter", |
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175 | "/usr/testbed/lib/ns2ir/parse.tcl") |
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176 | mapdb_file = config.get("experiment_control", "mapdb") |
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177 | self.trace_file = sys.stderr |
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178 | |
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179 | self.def_expstart = \ |
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180 | "sudo -H /bin/sh /usr/local/federation/bin/federate.sh >& " +\ |
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181 | "/tmp/federate"; |
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182 | self.def_mexpstart = "sudo -H /usr/local/federation/bin/make_hosts " +\ |
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183 | "FEDDIR/hosts"; |
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184 | self.def_gwstart = \ |
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185 | "sudo -H /usr/local/federation/bin/fed-tun.pl -f GWCONF>& " +\ |
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186 | "/tmp/bridge.log"; |
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187 | self.def_mgwstart = \ |
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188 | "sudo -H /usr/local/federation/bin/fed-tun.pl -f GWCONF >& " +\ |
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189 | "/tmp/bridge.log"; |
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190 | self.def_gwimage = "FBSD61-TUNNEL2"; |
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191 | self.def_gwtype = "pc"; |
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192 | self.local_access = { } |
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193 | |
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194 | if self.auth_type == 'legacy': |
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195 | if auth: |
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196 | self.auth = auth |
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197 | else: |
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198 | self.log.error( "[access]: No authorizer initialized, " +\ |
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199 | "creating local one.") |
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200 | auth = authorizer() |
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201 | self.get_access = self.legacy_get_access |
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202 | elif self.auth_type == 'abac': |
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203 | self.auth = abac_authorizer(load=self.auth_dir) |
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204 | else: |
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205 | raise service_error(service_error.internal, |
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206 | "Unknown auth_type: %s" % self.auth_type) |
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207 | |
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208 | if mapdb_file: |
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209 | self.read_mapdb(mapdb_file) |
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210 | else: |
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211 | self.log.warn("[experiment_control] No testbed map, using defaults") |
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212 | self.tbmap = { |
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213 | 'deter':'https://users.isi.deterlab.net:23235', |
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214 | 'emulab':'https://users.isi.deterlab.net:23236', |
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215 | 'ucb':'https://users.isi.deterlab.net:23237', |
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216 | } |
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217 | |
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218 | if accessdb_file: |
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219 | self.read_accessdb(accessdb_file) |
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220 | else: |
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221 | raise service_error(service_error.internal, |
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222 | "No accessdb specified in config") |
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223 | |
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224 | # Grab saved state. OK to do this w/o locking because it's read only |
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225 | # and only one thread should be in existence that can see self.state at |
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226 | # this point. |
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227 | if self.state_filename: |
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228 | self.read_state() |
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229 | |
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230 | if self.store_filename: |
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231 | self.read_store() |
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232 | else: |
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233 | self.log.warning("No saved synch store") |
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234 | self.synch_store = synch_store |
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235 | |
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236 | # Dispatch tables |
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237 | self.soap_services = {\ |
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238 | 'New': soap_handler('New', self.new_experiment), |
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239 | 'Create': soap_handler('Create', self.create_experiment), |
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240 | 'Vtopo': soap_handler('Vtopo', self.get_vtopo), |
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241 | 'Vis': soap_handler('Vis', self.get_vis), |
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242 | 'Info': soap_handler('Info', self.get_info), |
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243 | 'MultiInfo': soap_handler('MultiInfo', self.get_multi_info), |
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244 | 'Terminate': soap_handler('Terminate', |
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245 | self.terminate_experiment), |
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246 | 'GetValue': soap_handler('GetValue', self.GetValue), |
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247 | 'SetValue': soap_handler('SetValue', self.SetValue), |
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248 | } |
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249 | |
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250 | self.xmlrpc_services = {\ |
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251 | 'New': xmlrpc_handler('New', self.new_experiment), |
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252 | 'Create': xmlrpc_handler('Create', self.create_experiment), |
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253 | 'Vtopo': xmlrpc_handler('Vtopo', self.get_vtopo), |
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254 | 'Vis': xmlrpc_handler('Vis', self.get_vis), |
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255 | 'Info': xmlrpc_handler('Info', self.get_info), |
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256 | 'MultiInfo': xmlrpc_handler('MultiInfo', self.get_multi_info), |
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257 | 'Terminate': xmlrpc_handler('Terminate', |
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258 | self.terminate_experiment), |
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259 | 'GetValue': xmlrpc_handler('GetValue', self.GetValue), |
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260 | 'SetValue': xmlrpc_handler('SetValue', self.SetValue), |
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261 | } |
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262 | |
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263 | # Call while holding self.state_lock |
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264 | def write_state(self): |
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265 | """ |
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266 | Write a new copy of experiment state after copying the existing state |
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267 | to a backup. |
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268 | |
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269 | State format is a simple pickling of the state dictionary. |
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270 | """ |
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271 | if os.access(self.state_filename, os.W_OK): |
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272 | copy_file(self.state_filename, \ |
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273 | "%s.bak" % self.state_filename) |
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274 | try: |
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275 | f = open(self.state_filename, 'w') |
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276 | pickle.dump(self.state, f) |
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277 | except EnvironmentError, e: |
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278 | self.log.error("Can't write file %s: %s" % \ |
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279 | (self.state_filename, e)) |
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280 | except pickle.PicklingError, e: |
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281 | self.log.error("Pickling problem: %s" % e) |
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282 | except TypeError, e: |
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283 | self.log.error("Pickling problem (TypeError): %s" % e) |
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284 | |
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285 | @staticmethod |
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286 | def get_alloc_ids(state): |
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287 | """ |
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288 | Pull the fedids of the identifiers of each allocation from the |
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289 | state. Again, a dict dive that's best isolated. |
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290 | |
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291 | Used by read_store and read state |
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292 | """ |
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293 | |
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294 | return [ f['allocID']['fedid'] |
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295 | for f in state.get('federant',[]) \ |
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296 | if f.has_key('allocID') and \ |
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297 | f['allocID'].has_key('fedid')] |
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298 | |
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299 | # Call while holding self.state_lock |
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300 | def read_state(self): |
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301 | """ |
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302 | Read a new copy of experiment state. Old state is overwritten. |
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303 | |
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304 | State format is a simple pickling of the state dictionary. |
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305 | """ |
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306 | |
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307 | def get_experiment_id(state): |
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308 | """ |
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309 | Pull the fedid experimentID out of the saved state. This is kind |
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310 | of a gross walk through the dict. |
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311 | """ |
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312 | |
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313 | if state.has_key('experimentID'): |
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314 | for e in state['experimentID']: |
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315 | if e.has_key('fedid'): |
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316 | return e['fedid'] |
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317 | else: |
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318 | return None |
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319 | else: |
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320 | return None |
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321 | |
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322 | try: |
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323 | f = open(self.state_filename, "r") |
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324 | self.state = pickle.load(f) |
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325 | self.log.debug("[read_state]: Read state from %s" % \ |
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326 | self.state_filename) |
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327 | except EnvironmentError, e: |
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328 | self.log.warning("[read_state]: No saved state: Can't open %s: %s"\ |
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329 | % (self.state_filename, e)) |
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330 | except pickle.UnpicklingError, e: |
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331 | self.log.warning(("[read_state]: No saved state: " + \ |
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332 | "Unpickling failed: %s") % e) |
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333 | |
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334 | for s in self.state.values(): |
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335 | try: |
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336 | |
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337 | eid = get_experiment_id(s) |
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338 | if eid : |
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339 | if self.auth_type == 'legacy': |
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340 | # XXX: legacy |
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341 | # Give the owner rights to the experiment |
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342 | self.auth.set_attribute(s['owner'], eid) |
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343 | # And holders of the eid as well |
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344 | self.auth.set_attribute(eid, eid) |
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345 | # allow overrides to control experiments as well |
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346 | for o in self.overrides: |
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347 | self.auth.set_attribute(o, eid) |
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348 | # Set permissions to allow reading of the software |
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349 | # repo, if any, as well. |
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350 | for a in self.get_alloc_ids(s): |
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351 | self.auth.set_attribute(a, 'repo/%s' % eid) |
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352 | else: |
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353 | raise KeyError("No experiment id") |
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354 | except KeyError, e: |
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355 | self.log.warning("[read_state]: State ownership or identity " +\ |
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356 | "misformatted in %s: %s" % (self.state_filename, e)) |
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357 | |
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358 | |
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359 | def read_accessdb(self, accessdb_file): |
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360 | """ |
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361 | Read the mapping from fedids that can create experiments to their name |
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362 | in the 3-level access namespace. All will be asserted from this |
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363 | testbed and can include the local username and porject that will be |
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364 | asserted on their behalf by this fedd. Each fedid is also added to the |
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365 | authorization system with the "create" attribute. |
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366 | """ |
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367 | self.accessdb = {} |
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368 | # These are the regexps for parsing the db |
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369 | name_expr = "[" + string.ascii_letters + string.digits + "\.\-]+" |
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370 | project_line = re.compile("^\s*fedid:([" + string.hexdigits + "]+)"+ \ |
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371 | "\s*->\(\s*("+name_expr+")\s*,\s*("+name_expr+")\s*\)\s*$") |
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372 | user_line = re.compile("^\s*fedid:([" + string.hexdigits + "]+)"+ \ |
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373 | "\s*->\s*(" + name_expr + ")\s*$") |
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374 | lineno = 0 |
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375 | |
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376 | # Parse the mappings and store in self.authdb, a dict of |
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377 | # fedid -> (proj, user) |
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378 | try: |
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379 | f = open(accessdb_file, "r") |
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380 | for line in f: |
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381 | lineno += 1 |
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382 | line = line.strip() |
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383 | if len(line) == 0 or line.startswith('#'): |
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384 | continue |
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385 | m = project_line.match(line) |
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386 | if m: |
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387 | fid = fedid(hexstr=m.group(1)) |
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388 | project, user = m.group(2,3) |
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389 | if not self.accessdb.has_key(fid): |
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390 | self.accessdb[fid] = [] |
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391 | self.accessdb[fid].append((project, user)) |
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392 | continue |
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393 | |
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394 | m = user_line.match(line) |
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395 | if m: |
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396 | fid = fedid(hexstr=m.group(1)) |
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397 | project = None |
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398 | user = m.group(2) |
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399 | if not self.accessdb.has_key(fid): |
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400 | self.accessdb[fid] = [] |
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401 | self.accessdb[fid].append((project, user)) |
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402 | continue |
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403 | self.log.warn("[experiment_control] Error parsing access " +\ |
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404 | "db %s at line %d" % (accessdb_file, lineno)) |
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405 | except EnvironmentError: |
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406 | raise service_error(service_error.internal, |
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407 | ("Error opening/reading %s as experiment " +\ |
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408 | "control accessdb") % accessdb_file) |
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409 | f.close() |
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410 | |
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411 | # Initialize the authorization attributes |
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412 | # XXX: legacy |
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413 | if self.auth_type == 'legacy': |
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414 | for fid in self.accessdb.keys(): |
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415 | self.auth.set_attribute(fid, 'create') |
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416 | self.auth.set_attribute(fid, 'new') |
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417 | |
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418 | def read_mapdb(self, file): |
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419 | """ |
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420 | Read a simple colon separated list of mappings for the |
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421 | label-to-testbed-URL mappings. Clears or creates self.tbmap. |
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422 | """ |
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423 | |
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424 | self.tbmap = { } |
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425 | lineno =0 |
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426 | try: |
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427 | f = open(file, "r") |
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428 | for line in f: |
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429 | lineno += 1 |
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430 | line = line.strip() |
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431 | if line.startswith('#') or len(line) == 0: |
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432 | continue |
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433 | try: |
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434 | label, url = line.split(':', 1) |
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435 | self.tbmap[label] = url |
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436 | except ValueError, e: |
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437 | self.log.warn("[read_mapdb] Ignored bad line (%d) in " +\ |
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438 | "map db: %s %s" % (lineno, line, e)) |
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439 | except EnvironmentError, e: |
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440 | self.log.warning("[read_mapdb]: No saved map database: Can't " +\ |
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441 | "open %s: %s" % (file, e)) |
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442 | else: |
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443 | f.close() |
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444 | |
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445 | def read_store(self): |
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446 | try: |
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447 | self.synch_store = synch_store() |
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448 | self.synch_store.load(self.store_filename) |
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449 | self.log.debug("[read_store]: Read store from %s" % \ |
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450 | self.store_filename) |
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451 | except EnvironmentError, e: |
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452 | self.log.warning("[read_store]: No saved store: Can't open %s: %s"\ |
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453 | % (self.state_filename, e)) |
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454 | self.synch_store = synch_store() |
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455 | |
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456 | # Set the initial permissions on data in the store. XXX: This ad hoc |
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457 | # authorization attribute initialization is getting out of hand. |
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458 | # XXX: legacy |
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459 | if self.auth_type == 'legacy': |
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460 | for k in self.synch_store.all_keys(): |
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461 | try: |
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462 | if k.startswith('fedid:'): |
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463 | fid = fedid(hexstr=k[6:46]) |
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464 | if self.state.has_key(fid): |
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465 | for a in self.get_alloc_ids(self.state[fid]): |
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466 | self.auth.set_attribute(a, k) |
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467 | except ValueError, e: |
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468 | self.log.warn("Cannot deduce permissions for %s" % k) |
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469 | |
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470 | |
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471 | def write_store(self): |
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472 | """ |
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473 | Write a new copy of synch_store after writing current state |
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474 | to a backup. We use the internal synch_store pickle method to avoid |
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475 | incinsistent data. |
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476 | |
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477 | State format is a simple pickling of the store. |
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478 | """ |
---|
479 | if os.access(self.store_filename, os.W_OK): |
---|
480 | copy_file(self.store_filename, \ |
---|
481 | "%s.bak" % self.store_filename) |
---|
482 | try: |
---|
483 | self.synch_store.save(self.store_filename) |
---|
484 | except EnvironmentError, e: |
---|
485 | self.log.error("Can't write file %s: %s" % \ |
---|
486 | (self.store_filename, e)) |
---|
487 | except TypeError, e: |
---|
488 | self.log.error("Pickling problem (TypeError): %s" % e) |
---|
489 | |
---|
490 | |
---|
491 | def remove_dirs(self, dir): |
---|
492 | """ |
---|
493 | Remove the directory tree and all files rooted at dir. Log any errors, |
---|
494 | but continue. |
---|
495 | """ |
---|
496 | self.log.debug("[removedirs]: removing %s" % dir) |
---|
497 | try: |
---|
498 | for path, dirs, files in os.walk(dir, topdown=False): |
---|
499 | for f in files: |
---|
500 | os.remove(os.path.join(path, f)) |
---|
501 | for d in dirs: |
---|
502 | os.rmdir(os.path.join(path, d)) |
---|
503 | os.rmdir(dir) |
---|
504 | except EnvironmentError, e: |
---|
505 | self.log.error("Error deleting directory tree in %s" % e); |
---|
506 | |
---|
507 | @staticmethod |
---|
508 | def make_temp_certfile(expcert, tmpdir): |
---|
509 | """ |
---|
510 | make a protected copy of the access certificate so the experiment |
---|
511 | controller can act as the experiment principal. mkstemp is the most |
---|
512 | secure way to do that. The directory should be created by |
---|
513 | mkdtemp. Return the filename. |
---|
514 | """ |
---|
515 | if expcert and tmpdir: |
---|
516 | try: |
---|
517 | certf, certfn = tempfile.mkstemp(suffix=".pem", dir=tmpdir) |
---|
518 | f = os.fdopen(certf, 'w') |
---|
519 | print >> f, expcert |
---|
520 | f.close() |
---|
521 | except EnvironmentError, e: |
---|
522 | raise service_error(service_error.internal, |
---|
523 | "Cannot create temp cert file?") |
---|
524 | return certfn |
---|
525 | else: |
---|
526 | return None |
---|
527 | |
---|
528 | |
---|
529 | def generate_ssh_keys(self, dest, type="rsa" ): |
---|
530 | """ |
---|
531 | Generate a set of keys for the gateways to use to talk. |
---|
532 | |
---|
533 | Keys are of type type and are stored in the required dest file. |
---|
534 | """ |
---|
535 | valid_types = ("rsa", "dsa") |
---|
536 | t = type.lower(); |
---|
537 | if t not in valid_types: raise ValueError |
---|
538 | cmd = [self.ssh_keygen, '-t', t, '-N', '', '-f', dest] |
---|
539 | |
---|
540 | try: |
---|
541 | trace = open("/dev/null", "w") |
---|
542 | except EnvironmentError: |
---|
543 | raise service_error(service_error.internal, |
---|
544 | "Cannot open /dev/null??"); |
---|
545 | |
---|
546 | # May raise CalledProcessError |
---|
547 | self.log.debug("[generate_ssh_keys]: %s" % " ".join(cmd)) |
---|
548 | rv = call(cmd, stdout=trace, stderr=trace, close_fds=True) |
---|
549 | if rv != 0: |
---|
550 | raise service_error(service_error.internal, |
---|
551 | "Cannot generate nonce ssh keys. %s return code %d" \ |
---|
552 | % (self.ssh_keygen, rv)) |
---|
553 | |
---|
554 | def gentopo(self, str): |
---|
555 | """ |
---|
556 | Generate the topology data structure from the splitter's XML |
---|
557 | representation of it. |
---|
558 | |
---|
559 | The topology XML looks like: |
---|
560 | <experiment> |
---|
561 | <nodes> |
---|
562 | <node><vname></vname><ips>ip1:ip2</ips></node> |
---|
563 | </nodes> |
---|
564 | <lans> |
---|
565 | <lan> |
---|
566 | <vname></vname><vnode></vnode><ip></ip> |
---|
567 | <bandwidth></bandwidth><member>node:port</member> |
---|
568 | </lan> |
---|
569 | </lans> |
---|
570 | """ |
---|
571 | class topo_parse: |
---|
572 | """ |
---|
573 | Parse the topology XML and create the dats structure. |
---|
574 | """ |
---|
575 | def __init__(self): |
---|
576 | # Typing of the subelements for data conversion |
---|
577 | self.str_subelements = ('vname', 'vnode', 'ips', 'ip', 'member') |
---|
578 | self.int_subelements = ( 'bandwidth',) |
---|
579 | self.float_subelements = ( 'delay',) |
---|
580 | # The final data structure |
---|
581 | self.nodes = [ ] |
---|
582 | self.lans = [ ] |
---|
583 | self.topo = { \ |
---|
584 | 'node': self.nodes,\ |
---|
585 | 'lan' : self.lans,\ |
---|
586 | } |
---|
587 | self.element = { } # Current element being created |
---|
588 | self.chars = "" # Last text seen |
---|
589 | |
---|
590 | def end_element(self, name): |
---|
591 | # After each sub element the contents is added to the current |
---|
592 | # element or to the appropriate list. |
---|
593 | if name == 'node': |
---|
594 | self.nodes.append(self.element) |
---|
595 | self.element = { } |
---|
596 | elif name == 'lan': |
---|
597 | self.lans.append(self.element) |
---|
598 | self.element = { } |
---|
599 | elif name in self.str_subelements: |
---|
600 | self.element[name] = self.chars |
---|
601 | self.chars = "" |
---|
602 | elif name in self.int_subelements: |
---|
603 | self.element[name] = int(self.chars) |
---|
604 | self.chars = "" |
---|
605 | elif name in self.float_subelements: |
---|
606 | self.element[name] = float(self.chars) |
---|
607 | self.chars = "" |
---|
608 | |
---|
609 | def found_chars(self, data): |
---|
610 | self.chars += data.rstrip() |
---|
611 | |
---|
612 | |
---|
613 | tp = topo_parse(); |
---|
614 | parser = xml.parsers.expat.ParserCreate() |
---|
615 | parser.EndElementHandler = tp.end_element |
---|
616 | parser.CharacterDataHandler = tp.found_chars |
---|
617 | |
---|
618 | parser.Parse(str) |
---|
619 | |
---|
620 | return tp.topo |
---|
621 | |
---|
622 | |
---|
623 | def genviz(self, topo): |
---|
624 | """ |
---|
625 | Generate the visualization the virtual topology |
---|
626 | """ |
---|
627 | |
---|
628 | neato = "/usr/local/bin/neato" |
---|
629 | # These are used to parse neato output and to create the visualization |
---|
630 | # file. |
---|
631 | vis_re = re.compile('^\s*"?([\w\-]+)"?\s+\[.*pos="([\d\.]+),([\d\.]+)"') |
---|
632 | vis_fmt = "<node><name>%s</name><x>%s</x><y>%s</y><type>" + \ |
---|
633 | "%s</type></node>" |
---|
634 | |
---|
635 | try: |
---|
636 | # Node names |
---|
637 | nodes = [ n['vname'] for n in topo['node'] ] |
---|
638 | topo_lans = topo['lan'] |
---|
639 | except KeyError, e: |
---|
640 | raise service_error(service_error.internal, "Bad topology: %s" %e) |
---|
641 | |
---|
642 | lans = { } |
---|
643 | links = { } |
---|
644 | |
---|
645 | # Walk through the virtual topology, organizing the connections into |
---|
646 | # 2-node connections (links) and more-than-2-node connections (lans). |
---|
647 | # When a lan is created, it's added to the list of nodes (there's a |
---|
648 | # node in the visualization for the lan). |
---|
649 | for l in topo_lans: |
---|
650 | if links.has_key(l['vname']): |
---|
651 | if len(links[l['vname']]) < 2: |
---|
652 | links[l['vname']].append(l['vnode']) |
---|
653 | else: |
---|
654 | nodes.append(l['vname']) |
---|
655 | lans[l['vname']] = links[l['vname']] |
---|
656 | del links[l['vname']] |
---|
657 | lans[l['vname']].append(l['vnode']) |
---|
658 | elif lans.has_key(l['vname']): |
---|
659 | lans[l['vname']].append(l['vnode']) |
---|
660 | else: |
---|
661 | links[l['vname']] = [ l['vnode'] ] |
---|
662 | |
---|
663 | |
---|
664 | # Open up a temporary file for dot to turn into a visualization |
---|
665 | try: |
---|
666 | df, dotname = tempfile.mkstemp() |
---|
667 | dotfile = os.fdopen(df, 'w') |
---|
668 | except EnvironmentError: |
---|
669 | raise service_error(service_error.internal, |
---|
670 | "Failed to open file in genviz") |
---|
671 | |
---|
672 | try: |
---|
673 | dnull = open('/dev/null', 'w') |
---|
674 | except EnvironmentError: |
---|
675 | service_error(service_error.internal, |
---|
676 | "Failed to open /dev/null in genviz") |
---|
677 | |
---|
678 | # Generate a dot/neato input file from the links, nodes and lans |
---|
679 | try: |
---|
680 | print >>dotfile, "graph G {" |
---|
681 | for n in nodes: |
---|
682 | print >>dotfile, '\t"%s"' % n |
---|
683 | for l in links.keys(): |
---|
684 | print >>dotfile, '\t"%s" -- "%s"' % tuple(links[l]) |
---|
685 | for l in lans.keys(): |
---|
686 | for n in lans[l]: |
---|
687 | print >>dotfile, '\t "%s" -- "%s"' % (n,l) |
---|
688 | print >>dotfile, "}" |
---|
689 | dotfile.close() |
---|
690 | except TypeError: |
---|
691 | raise service_error(service_error.internal, |
---|
692 | "Single endpoint link in vtopo") |
---|
693 | except EnvironmentError: |
---|
694 | raise service_error(service_error.internal, "Cannot write dot file") |
---|
695 | |
---|
696 | # Use dot to create a visualization |
---|
697 | dot = Popen([neato, '-Gstart=rand', '-Gepsilon=0.005', '-Gmaxiter=2000', |
---|
698 | '-Gpack=true', dotname], stdout=PIPE, stderr=dnull, |
---|
699 | close_fds=True) |
---|
700 | dnull.close() |
---|
701 | |
---|
702 | # Translate dot to vis format |
---|
703 | vis_nodes = [ ] |
---|
704 | vis = { 'node': vis_nodes } |
---|
705 | for line in dot.stdout: |
---|
706 | m = vis_re.match(line) |
---|
707 | if m: |
---|
708 | vn = m.group(1) |
---|
709 | vis_node = {'name': vn, \ |
---|
710 | 'x': float(m.group(2)),\ |
---|
711 | 'y' : float(m.group(3)),\ |
---|
712 | } |
---|
713 | if vn in links.keys() or vn in lans.keys(): |
---|
714 | vis_node['type'] = 'lan' |
---|
715 | else: |
---|
716 | vis_node['type'] = 'node' |
---|
717 | vis_nodes.append(vis_node) |
---|
718 | rv = dot.wait() |
---|
719 | |
---|
720 | os.remove(dotname) |
---|
721 | if rv == 0 : return vis |
---|
722 | else: return None |
---|
723 | |
---|
724 | |
---|
725 | def release_access(self, tb, aid, tbmap=None, uri=None, cert_file=None, |
---|
726 | cert_pwd=None): |
---|
727 | """ |
---|
728 | Release access to testbed through fedd |
---|
729 | """ |
---|
730 | |
---|
731 | if not uri and tbmap: |
---|
732 | uri = tbmap.get(tb, None) |
---|
733 | if not uri: |
---|
734 | raise service_error(service_error.server_config, |
---|
735 | "Unknown testbed: %s" % tb) |
---|
736 | |
---|
737 | if self.local_access.has_key(uri): |
---|
738 | resp = self.local_access[uri].ReleaseAccess(\ |
---|
739 | { 'ReleaseAccessRequestBody' : {'allocID': aid},}, |
---|
740 | fedid(file=cert_file)) |
---|
741 | resp = { 'ReleaseAccessResponseBody': resp } |
---|
742 | else: |
---|
743 | resp = self.call_ReleaseAccess(uri, {'allocID': aid}, |
---|
744 | cert_file, cert_pwd, self.trusted_certs) |
---|
745 | |
---|
746 | # better error coding |
---|
747 | |
---|
748 | def remote_ns2topdl(self, uri, desc): |
---|
749 | |
---|
750 | req = { |
---|
751 | 'description' : { 'ns2description': desc }, |
---|
752 | } |
---|
753 | |
---|
754 | r = self.call_Ns2Topdl(uri, req, self.cert_file, self.cert_pwd, |
---|
755 | self.trusted_certs) |
---|
756 | |
---|
757 | if r.has_key('Ns2TopdlResponseBody'): |
---|
758 | r = r['Ns2TopdlResponseBody'] |
---|
759 | ed = r.get('experimentdescription', None) |
---|
760 | if ed.has_key('topdldescription'): |
---|
761 | return topdl.Topology(**ed['topdldescription']) |
---|
762 | else: |
---|
763 | raise service_error(service_error.protocol, |
---|
764 | "Bad splitter response (no output)") |
---|
765 | else: |
---|
766 | raise service_error(service_error.protocol, "Bad splitter response") |
---|
767 | |
---|
768 | class start_segment: |
---|
769 | def __init__(self, debug=False, log=None, testbed="", cert_file=None, |
---|
770 | cert_pwd=None, trusted_certs=None, caller=None, |
---|
771 | log_collector=None): |
---|
772 | self.log = log |
---|
773 | self.debug = debug |
---|
774 | self.cert_file = cert_file |
---|
775 | self.cert_pwd = cert_pwd |
---|
776 | self.trusted_certs = None |
---|
777 | self.caller = caller |
---|
778 | self.testbed = testbed |
---|
779 | self.log_collector = log_collector |
---|
780 | self.response = None |
---|
781 | self.node = { } |
---|
782 | self.proof = None |
---|
783 | |
---|
784 | def make_map(self, resp): |
---|
785 | for e in resp.get('embedding', []): |
---|
786 | if 'toponame' in e and 'physname' in e: |
---|
787 | self.node[e['toponame']] = e['physname'][0] |
---|
788 | |
---|
789 | def __call__(self, uri, aid, topo, masters, attrs=None, connInfo=None): |
---|
790 | req = { |
---|
791 | 'allocID': { 'fedid' : aid }, |
---|
792 | 'segmentdescription': { |
---|
793 | 'topdldescription': topo.to_dict(), |
---|
794 | }, |
---|
795 | } |
---|
796 | |
---|
797 | if connInfo: |
---|
798 | req['connection'] = connInfo |
---|
799 | |
---|
800 | import_svcs = [ s for m in masters.values() \ |
---|
801 | for s in m if self.testbed in s.importers] |
---|
802 | |
---|
803 | if import_svcs or self.testbed in masters: |
---|
804 | req['service'] = [] |
---|
805 | |
---|
806 | for s in import_svcs: |
---|
807 | for r in s.reqs: |
---|
808 | sr = copy.deepcopy(r) |
---|
809 | sr['visibility'] = 'import'; |
---|
810 | req['service'].append(sr) |
---|
811 | |
---|
812 | for s in masters.get(self.testbed, []): |
---|
813 | for r in s.reqs: |
---|
814 | sr = copy.deepcopy(r) |
---|
815 | sr['visibility'] = 'export'; |
---|
816 | req['service'].append(sr) |
---|
817 | |
---|
818 | if attrs: |
---|
819 | req['fedAttr'] = attrs |
---|
820 | |
---|
821 | try: |
---|
822 | self.log.debug("Calling StartSegment at %s " % uri) |
---|
823 | r = self.caller(uri, req, self.cert_file, self.cert_pwd, |
---|
824 | self.trusted_certs) |
---|
825 | if r.has_key('StartSegmentResponseBody'): |
---|
826 | lval = r['StartSegmentResponseBody'].get('allocationLog', |
---|
827 | None) |
---|
828 | if lval and self.log_collector: |
---|
829 | for line in lval.splitlines(True): |
---|
830 | self.log_collector.write(line) |
---|
831 | self.make_map(r['StartSegmentResponseBody']) |
---|
832 | if 'proof' in r: self.proof = r['proof'] |
---|
833 | self.response = r |
---|
834 | else: |
---|
835 | raise service_error(service_error.internal, |
---|
836 | "Bad response!?: %s" %r) |
---|
837 | return True |
---|
838 | except service_error, e: |
---|
839 | self.log.error("Start segment failed on %s: %s" % \ |
---|
840 | (self.testbed, e)) |
---|
841 | return False |
---|
842 | |
---|
843 | |
---|
844 | |
---|
845 | class terminate_segment: |
---|
846 | def __init__(self, debug=False, log=None, testbed="", cert_file=None, |
---|
847 | cert_pwd=None, trusted_certs=None, caller=None): |
---|
848 | self.log = log |
---|
849 | self.debug = debug |
---|
850 | self.cert_file = cert_file |
---|
851 | self.cert_pwd = cert_pwd |
---|
852 | self.trusted_certs = None |
---|
853 | self.caller = caller |
---|
854 | self.testbed = testbed |
---|
855 | |
---|
856 | def __call__(self, uri, aid ): |
---|
857 | req = { |
---|
858 | 'allocID': aid , |
---|
859 | } |
---|
860 | try: |
---|
861 | r = self.caller(uri, req, self.cert_file, self.cert_pwd, |
---|
862 | self.trusted_certs) |
---|
863 | return True |
---|
864 | except service_error, e: |
---|
865 | self.log.error("Terminate segment failed on %s: %s" % \ |
---|
866 | (self.testbed, e)) |
---|
867 | return False |
---|
868 | |
---|
869 | def allocate_resources(self, allocated, masters, eid, expid, |
---|
870 | tbparams, top, topo, tmpdir, alloc_log=None, log_collector=None, |
---|
871 | attrs=None, connInfo={}, tbmap=None, expcert=None): |
---|
872 | |
---|
873 | started = { } # Testbeds where a sub-experiment started |
---|
874 | # successfully |
---|
875 | |
---|
876 | # XXX |
---|
877 | fail_soft = False |
---|
878 | |
---|
879 | if tbmap is None: tbmap = { } |
---|
880 | |
---|
881 | log = alloc_log or self.log |
---|
882 | |
---|
883 | tp = thread_pool(self.nthreads) |
---|
884 | threads = [ ] |
---|
885 | starters = [ ] |
---|
886 | |
---|
887 | if expcert: |
---|
888 | cert = expcert |
---|
889 | pw = None |
---|
890 | else: |
---|
891 | cert = self.cert_file |
---|
892 | pw = self.cert_pwd |
---|
893 | |
---|
894 | for tb in allocated.keys(): |
---|
895 | # Create and start a thread to start the segment, and save it |
---|
896 | # to get the return value later |
---|
897 | tb_attrs = copy.copy(attrs) |
---|
898 | tp.wait_for_slot() |
---|
899 | uri = tbparams[tb].get('uri', tbmap.get(testbed_base(tb), None)) |
---|
900 | base, suffix = split_testbed(tb) |
---|
901 | if suffix: |
---|
902 | tb_attrs.append({'attribute': 'experiment_name', |
---|
903 | 'value': "%s-%s" % (eid, suffix)}) |
---|
904 | else: |
---|
905 | tb_attrs.append({'attribute': 'experiment_name', 'value': eid}) |
---|
906 | if not uri: |
---|
907 | raise service_error(service_error.internal, |
---|
908 | "Unknown testbed %s !?" % tb) |
---|
909 | |
---|
910 | if tbparams[tb].has_key('allocID') and \ |
---|
911 | tbparams[tb]['allocID'].has_key('fedid'): |
---|
912 | aid = tbparams[tb]['allocID']['fedid'] |
---|
913 | else: |
---|
914 | raise service_error(service_error.internal, |
---|
915 | "No alloc id for testbed %s !?" % tb) |
---|
916 | |
---|
917 | s = self.start_segment(log=log, debug=self.debug, |
---|
918 | testbed=tb, cert_file=cert, |
---|
919 | cert_pwd=pw, trusted_certs=self.trusted_certs, |
---|
920 | caller=self.call_StartSegment, |
---|
921 | log_collector=log_collector) |
---|
922 | starters.append(s) |
---|
923 | t = pooled_thread(\ |
---|
924 | target=s, name=tb, |
---|
925 | args=(uri, aid, topo[tb], masters, tb_attrs, connInfo[tb]), |
---|
926 | pdata=tp, trace_file=self.trace_file) |
---|
927 | threads.append(t) |
---|
928 | t.start() |
---|
929 | |
---|
930 | # Wait until all finish (keep pinging the log, though) |
---|
931 | mins = 0 |
---|
932 | revoked = False |
---|
933 | while not tp.wait_for_all_done(60.0): |
---|
934 | mins += 1 |
---|
935 | alloc_log.info("Waiting for sub threads (it has been %d mins)" \ |
---|
936 | % mins) |
---|
937 | if not revoked and \ |
---|
938 | len([ t.getName() for t in threads if t.rv == False]) > 0: |
---|
939 | # a testbed has failed. Revoke this experiment's |
---|
940 | # synchronizarion values so that sub experiments will not |
---|
941 | # deadlock waiting for synchronization that will never happen |
---|
942 | self.log.info("A subexperiment has failed to swap in, " + \ |
---|
943 | "revoking synch keys") |
---|
944 | var_key = "fedid:%s" % expid |
---|
945 | for k in self.synch_store.all_keys(): |
---|
946 | if len(k) > 45 and k[0:46] == var_key: |
---|
947 | self.synch_store.revoke_key(k) |
---|
948 | revoked = True |
---|
949 | |
---|
950 | failed = [ t.getName() for t in threads if not t.rv ] |
---|
951 | succeeded = [tb for tb in allocated.keys() if tb not in failed] |
---|
952 | |
---|
953 | # If one failed clean up, unless fail_soft is set |
---|
954 | if failed: |
---|
955 | if not fail_soft: |
---|
956 | tp.clear() |
---|
957 | for tb in succeeded: |
---|
958 | # Create and start a thread to stop the segment |
---|
959 | tp.wait_for_slot() |
---|
960 | uri = tbparams[tb]['uri'] |
---|
961 | t = pooled_thread(\ |
---|
962 | target=self.terminate_segment(log=log, |
---|
963 | testbed=tb, |
---|
964 | cert_file=cert, |
---|
965 | cert_pwd=pw, |
---|
966 | trusted_certs=self.trusted_certs, |
---|
967 | caller=self.call_TerminateSegment), |
---|
968 | args=(uri, tbparams[tb]['federant']['allocID']), |
---|
969 | name=tb, |
---|
970 | pdata=tp, trace_file=self.trace_file) |
---|
971 | t.start() |
---|
972 | # Wait until all finish (if any are being stopped) |
---|
973 | if succeeded: |
---|
974 | tp.wait_for_all_done() |
---|
975 | |
---|
976 | # release the allocations |
---|
977 | for tb in tbparams.keys(): |
---|
978 | try: |
---|
979 | self.release_access(tb, tbparams[tb]['allocID'], |
---|
980 | tbmap=tbmap, uri=tbparams[tb].get('uri', None), |
---|
981 | cert_file=cert, cert_pwd=pw) |
---|
982 | except service_error, e: |
---|
983 | self.log.warn("Error releasing access: %s" % e.desc) |
---|
984 | # Remove the placeholder |
---|
985 | self.state_lock.acquire() |
---|
986 | self.state[eid]['experimentStatus'] = 'failed' |
---|
987 | if self.state_filename: self.write_state() |
---|
988 | self.state_lock.release() |
---|
989 | # Remove the repo dir |
---|
990 | self.remove_dirs("%s/%s" %(self.repodir, expid)) |
---|
991 | # Walk up tmpdir, deleting as we go |
---|
992 | if self.cleanup: |
---|
993 | self.remove_dirs(tmpdir) |
---|
994 | else: |
---|
995 | log.debug("[start_experiment]: not removing %s" % tmpdir) |
---|
996 | |
---|
997 | |
---|
998 | log.error("Swap in failed on %s" % ",".join(failed)) |
---|
999 | return |
---|
1000 | else: |
---|
1001 | # Walk through the successes and gather the virtual to physical |
---|
1002 | # mapping. |
---|
1003 | embedding = [ ] |
---|
1004 | proofs = { } |
---|
1005 | for s in starters: |
---|
1006 | for k, v in s.node.items(): |
---|
1007 | embedding.append({ |
---|
1008 | 'toponame': k, |
---|
1009 | 'physname': [ v], |
---|
1010 | 'testbed': s.testbed |
---|
1011 | }) |
---|
1012 | if s.proof: |
---|
1013 | proofs[s.testbed] = s.proof |
---|
1014 | log.info("[start_segment]: Experiment %s active" % eid) |
---|
1015 | |
---|
1016 | |
---|
1017 | # Walk up tmpdir, deleting as we go |
---|
1018 | if self.cleanup: |
---|
1019 | self.remove_dirs(tmpdir) |
---|
1020 | else: |
---|
1021 | log.debug("[start_experiment]: not removing %s" % tmpdir) |
---|
1022 | |
---|
1023 | # Insert the experiment into our state and update the disk copy. |
---|
1024 | self.state_lock.acquire() |
---|
1025 | self.state[expid]['experimentStatus'] = 'active' |
---|
1026 | self.state[eid] = self.state[expid] |
---|
1027 | self.state[eid]['experimentdescription']['topdldescription'] = \ |
---|
1028 | top.to_dict() |
---|
1029 | self.state[eid]['embedding'] = embedding |
---|
1030 | # Append startup proofs |
---|
1031 | for f in self.state[eid]['federant']: |
---|
1032 | if 'name' in f and 'localname' in f['name']: |
---|
1033 | if f['name']['localname'] in proofs: |
---|
1034 | f['proof'].append(proofs[f['name']['localname']]) |
---|
1035 | |
---|
1036 | if self.state_filename: self.write_state() |
---|
1037 | self.state_lock.release() |
---|
1038 | return |
---|
1039 | |
---|
1040 | |
---|
1041 | def add_kit(self, e, kit): |
---|
1042 | """ |
---|
1043 | Add a Software object created from the list of (install, location) |
---|
1044 | tuples passed as kit to the software attribute of an object e. We |
---|
1045 | do this enough to break out the code, but it's kind of a hack to |
---|
1046 | avoid changing the old tuple rep. |
---|
1047 | """ |
---|
1048 | |
---|
1049 | s = [ topdl.Software(install=i, location=l) for i, l in kit] |
---|
1050 | |
---|
1051 | if isinstance(e.software, list): e.software.extend(s) |
---|
1052 | else: e.software = s |
---|
1053 | |
---|
1054 | def append_experiment_authorization(self, expid, attrs, |
---|
1055 | need_state_lock=True): |
---|
1056 | """ |
---|
1057 | Append the authorization information to system state |
---|
1058 | """ |
---|
1059 | |
---|
1060 | for p, a in attrs: |
---|
1061 | self.auth.set_attribute(p, a) |
---|
1062 | self.auth.save() |
---|
1063 | |
---|
1064 | if need_state_lock: self.state_lock.acquire() |
---|
1065 | self.state[expid]['auth'].update(attrs) |
---|
1066 | if self.state_filename: self.write_state() |
---|
1067 | if need_state_lock: self.state_lock.release() |
---|
1068 | |
---|
1069 | def clear_experiment_authorization(self, expid, need_state_lock=True): |
---|
1070 | """ |
---|
1071 | Attrs is a set of attribute principal pairs that need to be removed |
---|
1072 | from the authenticator. Remove them and save the authenticator. |
---|
1073 | """ |
---|
1074 | |
---|
1075 | if need_state_lock: self.state_lock.acquire() |
---|
1076 | if expid in self.state and 'auth' in self.state[expid]: |
---|
1077 | for p, a in self.state[expid]['auth']: |
---|
1078 | self.auth.unset_attribute(p, a) |
---|
1079 | self.state[expid]['auth'] = set() |
---|
1080 | if self.state_filename: self.write_state() |
---|
1081 | if need_state_lock: self.state_lock.release() |
---|
1082 | self.auth.save() |
---|
1083 | |
---|
1084 | |
---|
1085 | def create_experiment_state(self, fid, req, expid, expcert, |
---|
1086 | state='starting'): |
---|
1087 | """ |
---|
1088 | Create the initial entry in the experiment's state. The expid and |
---|
1089 | expcert are the experiment's fedid and certifacte that represents that |
---|
1090 | ID, which are installed in the experiment state. If the request |
---|
1091 | includes a suggested local name that is used if possible. If the local |
---|
1092 | name is already taken by an experiment owned by this user that has |
---|
1093 | failed, it is overwritten. Otherwise new letters are added until a |
---|
1094 | valid localname is found. The generated local name is returned. |
---|
1095 | """ |
---|
1096 | |
---|
1097 | if req.has_key('experimentID') and \ |
---|
1098 | req['experimentID'].has_key('localname'): |
---|
1099 | overwrite = False |
---|
1100 | eid = req['experimentID']['localname'] |
---|
1101 | # If there's an old failed experiment here with the same local name |
---|
1102 | # and accessible by this user, we'll overwrite it, otherwise we'll |
---|
1103 | # fall through and do the collision avoidance. |
---|
1104 | old_expid = self.get_experiment_fedid(eid) |
---|
1105 | if old_expid: |
---|
1106 | users_experiment = True |
---|
1107 | try: |
---|
1108 | self.check_experiment_access(fid, old_expid) |
---|
1109 | except service_error, e: |
---|
1110 | if e.code == service_error.access: users_experiment = False |
---|
1111 | else: raise e |
---|
1112 | if users_experiment: |
---|
1113 | self.state_lock.acquire() |
---|
1114 | status = self.state[eid].get('experimentStatus', None) |
---|
1115 | if status and status == 'failed': |
---|
1116 | # remove the old access attributes |
---|
1117 | self.clear_experiment_authorization(eid, |
---|
1118 | need_state_lock=False) |
---|
1119 | overwrite = True |
---|
1120 | del self.state[eid] |
---|
1121 | del self.state[old_expid] |
---|
1122 | self.state_lock.release() |
---|
1123 | else: |
---|
1124 | self.log.info('Experiment %s exists, ' % eid + \ |
---|
1125 | 'but this user cannot access it') |
---|
1126 | self.state_lock.acquire() |
---|
1127 | while (self.state.has_key(eid) and not overwrite): |
---|
1128 | eid += random.choice(string.ascii_letters) |
---|
1129 | # Initial state |
---|
1130 | self.state[eid] = { |
---|
1131 | 'experimentID' : \ |
---|
1132 | [ { 'localname' : eid }, {'fedid': expid } ], |
---|
1133 | 'experimentStatus': state, |
---|
1134 | 'experimentAccess': { 'X509' : expcert }, |
---|
1135 | 'owner': fid, |
---|
1136 | 'log' : [], |
---|
1137 | 'auth': set(), |
---|
1138 | } |
---|
1139 | self.state[expid] = self.state[eid] |
---|
1140 | if self.state_filename: self.write_state() |
---|
1141 | self.state_lock.release() |
---|
1142 | else: |
---|
1143 | eid = self.exp_stem |
---|
1144 | for i in range(0,5): |
---|
1145 | eid += random.choice(string.ascii_letters) |
---|
1146 | self.state_lock.acquire() |
---|
1147 | while (self.state.has_key(eid)): |
---|
1148 | eid = self.exp_stem |
---|
1149 | for i in range(0,5): |
---|
1150 | eid += random.choice(string.ascii_letters) |
---|
1151 | # Initial state |
---|
1152 | self.state[eid] = { |
---|
1153 | 'experimentID' : \ |
---|
1154 | [ { 'localname' : eid }, {'fedid': expid } ], |
---|
1155 | 'experimentStatus': state, |
---|
1156 | 'experimentAccess': { 'X509' : expcert }, |
---|
1157 | 'owner': fid, |
---|
1158 | 'log' : [], |
---|
1159 | 'auth': set(), |
---|
1160 | } |
---|
1161 | self.state[expid] = self.state[eid] |
---|
1162 | if self.state_filename: self.write_state() |
---|
1163 | self.state_lock.release() |
---|
1164 | |
---|
1165 | # Let users touch the state. Authorize this fid and the expid itself |
---|
1166 | # to touch the experiment, as well as allowing th eoverrides. |
---|
1167 | self.append_experiment_authorization(eid, |
---|
1168 | set([(fid, expid), (expid,expid)] + \ |
---|
1169 | [ (o, expid) for o in self.overrides])) |
---|
1170 | |
---|
1171 | return eid |
---|
1172 | |
---|
1173 | |
---|
1174 | def allocate_ips_to_topo(self, top): |
---|
1175 | """ |
---|
1176 | Add an ip4_address attribute to all the hosts in the topology, based on |
---|
1177 | the shared substrates on which they sit. An /etc/hosts file is also |
---|
1178 | created and returned as a list of hostfiles entries. We also return |
---|
1179 | the allocator, because we may need to allocate IPs to portals |
---|
1180 | (specifically DRAGON portals). |
---|
1181 | """ |
---|
1182 | subs = sorted(top.substrates, |
---|
1183 | cmp=lambda x,y: cmp(len(x.interfaces), len(y.interfaces)), |
---|
1184 | reverse=True) |
---|
1185 | ips = ip_allocator(int(ip_addr("10.0.0.0")), 2 **24) |
---|
1186 | ifs = { } |
---|
1187 | hosts = [ ] |
---|
1188 | |
---|
1189 | for idx, s in enumerate(subs): |
---|
1190 | net_size = len(s.interfaces)+2 |
---|
1191 | |
---|
1192 | a = ips.allocate(net_size) |
---|
1193 | if a : |
---|
1194 | base, num = a |
---|
1195 | if num < net_size: |
---|
1196 | raise service_error(service_error.internal, |
---|
1197 | "Allocator returned wrong number of IPs??") |
---|
1198 | else: |
---|
1199 | raise service_error(service_error.req, |
---|
1200 | "Cannot allocate IP addresses") |
---|
1201 | mask = ips.min_alloc |
---|
1202 | while mask < net_size: |
---|
1203 | mask *= 2 |
---|
1204 | |
---|
1205 | netmask = ((2**32-1) ^ (mask-1)) |
---|
1206 | |
---|
1207 | base += 1 |
---|
1208 | for i in s.interfaces: |
---|
1209 | i.attribute.append( |
---|
1210 | topdl.Attribute('ip4_address', |
---|
1211 | "%s" % ip_addr(base))) |
---|
1212 | i.attribute.append( |
---|
1213 | topdl.Attribute('ip4_netmask', |
---|
1214 | "%s" % ip_addr(int(netmask)))) |
---|
1215 | |
---|
1216 | hname = i.element.name |
---|
1217 | if ifs.has_key(hname): |
---|
1218 | hosts.append("%s\t%s-%s %s-%d" % \ |
---|
1219 | (ip_addr(base), hname, s.name, hname, |
---|
1220 | ifs[hname])) |
---|
1221 | else: |
---|
1222 | ifs[hname] = 0 |
---|
1223 | hosts.append("%s\t%s-%s %s-%d %s" % \ |
---|
1224 | (ip_addr(base), hname, s.name, hname, |
---|
1225 | ifs[hname], hname)) |
---|
1226 | |
---|
1227 | ifs[hname] += 1 |
---|
1228 | base += 1 |
---|
1229 | return hosts, ips |
---|
1230 | |
---|
1231 | def get_access_to_testbeds(self, testbeds, fid, allocated, |
---|
1232 | tbparam, masters, tbmap, expid=None, expcert=None): |
---|
1233 | for tb in testbeds: |
---|
1234 | self.get_access(tb, tbparam, fid, masters, tbmap, expid, |
---|
1235 | expcert) |
---|
1236 | allocated[tb] = 1 |
---|
1237 | |
---|
1238 | def get_access(self, tb, tbparam,fid, masters, tbmap, expid=None, |
---|
1239 | expcert=None): |
---|
1240 | """ |
---|
1241 | Get access to testbed through fedd and set the parameters for that tb |
---|
1242 | """ |
---|
1243 | def get_export_project(svcs): |
---|
1244 | """ |
---|
1245 | Look through for the list of federated_service for this testbed |
---|
1246 | objects for a project_export service, and extract the project |
---|
1247 | parameter. |
---|
1248 | """ |
---|
1249 | |
---|
1250 | pe = [s for s in svcs if s.name=='project_export'] |
---|
1251 | if len(pe) == 1: |
---|
1252 | return pe[0].params.get('project', None) |
---|
1253 | elif len(pe) == 0: |
---|
1254 | return None |
---|
1255 | else: |
---|
1256 | raise service_error(service_error.req, |
---|
1257 | "More than one project export is not supported") |
---|
1258 | |
---|
1259 | def add_services(svcs, type, slist, keys): |
---|
1260 | """ |
---|
1261 | Add the given services to slist. type is import or export. Also |
---|
1262 | add a mapping entry from the assigned id to the original service |
---|
1263 | record. |
---|
1264 | """ |
---|
1265 | for i, s in enumerate(svcs): |
---|
1266 | idx = '%s%d' % (type, i) |
---|
1267 | keys[idx] = s |
---|
1268 | sr = {'id': idx, 'name': s.name, 'visibility': type } |
---|
1269 | if s.params: |
---|
1270 | sr['fedAttr'] = [ { 'attribute': k, 'value': v } \ |
---|
1271 | for k, v in s.params.items()] |
---|
1272 | slist.append(sr) |
---|
1273 | |
---|
1274 | uri = tbmap.get(testbed_base(tb), None) |
---|
1275 | if not uri: |
---|
1276 | raise service_error(service_error.server_config, |
---|
1277 | "Unknown testbed: %s" % tb) |
---|
1278 | |
---|
1279 | export_svcs = masters.get(tb,[]) |
---|
1280 | import_svcs = [ s for m in masters.values() \ |
---|
1281 | for s in m \ |
---|
1282 | if tb in s.importers ] |
---|
1283 | |
---|
1284 | export_project = get_export_project(export_svcs) |
---|
1285 | # Compose the credential list so that IDs come before attributes |
---|
1286 | creds = set() |
---|
1287 | keys = set() |
---|
1288 | certs = self.auth.get_creds_for_principal(fid) |
---|
1289 | if expid: |
---|
1290 | certs.update(self.auth.get_creds_for_principal(expid)) |
---|
1291 | for c in certs: |
---|
1292 | keys.add(c.issuer_cert()) |
---|
1293 | creds.add(c.attribute_cert()) |
---|
1294 | creds = list(keys) + list(creds) |
---|
1295 | |
---|
1296 | if expcert: cert, pw = expcert, None |
---|
1297 | else: cert, pw = self.cert_file, self.cert_pw |
---|
1298 | |
---|
1299 | # Request credentials |
---|
1300 | req = { |
---|
1301 | 'abac_credential': creds, |
---|
1302 | } |
---|
1303 | # Make the service request from the services we're importing and |
---|
1304 | # exporting. Keep track of the export request ids so we can |
---|
1305 | # collect the resulting info from the access response. |
---|
1306 | e_keys = { } |
---|
1307 | if import_svcs or export_svcs: |
---|
1308 | slist = [] |
---|
1309 | add_services(import_svcs, 'import', slist, e_keys) |
---|
1310 | add_services(export_svcs, 'export', slist, e_keys) |
---|
1311 | req['service'] = slist |
---|
1312 | |
---|
1313 | if self.local_access.has_key(uri): |
---|
1314 | # Local access call |
---|
1315 | req = { 'RequestAccessRequestBody' : req } |
---|
1316 | r = self.local_access[uri].RequestAccess(req, |
---|
1317 | fedid(file=self.cert_file)) |
---|
1318 | r = { 'RequestAccessResponseBody' : r } |
---|
1319 | else: |
---|
1320 | r = self.call_RequestAccess(uri, req, cert, pw, self.trusted_certs) |
---|
1321 | |
---|
1322 | if r.has_key('RequestAccessResponseBody'): |
---|
1323 | # Through to here we have a valid response, not a fault. |
---|
1324 | # Access denied is a fault, so something better or worse than |
---|
1325 | # access denied has happened. |
---|
1326 | r = r['RequestAccessResponseBody'] |
---|
1327 | self.log.debug("[get_access] Access granted") |
---|
1328 | else: |
---|
1329 | raise service_error(service_error.protocol, |
---|
1330 | "Bad proxy response") |
---|
1331 | if 'proof' not in r: |
---|
1332 | raise service_error(service_error.protocol, |
---|
1333 | "Bad access response (no access proof)") |
---|
1334 | |
---|
1335 | tbparam[tb] = { |
---|
1336 | "allocID" : r['allocID'], |
---|
1337 | "uri": uri, |
---|
1338 | "proof": [ r['proof'] ], |
---|
1339 | } |
---|
1340 | |
---|
1341 | # Collect the responses corresponding to the services this testbed |
---|
1342 | # exports. These will be the service requests that we will include in |
---|
1343 | # the start segment requests (with appropriate visibility values) to |
---|
1344 | # import and export the segments. |
---|
1345 | for s in r.get('service', []): |
---|
1346 | id = s.get('id', None) |
---|
1347 | if id and id in e_keys: |
---|
1348 | e_keys[id].reqs.append(s) |
---|
1349 | |
---|
1350 | # Add attributes to parameter space. We don't allow attributes to |
---|
1351 | # overlay any parameters already installed. |
---|
1352 | for a in r.get('fedAttr', []): |
---|
1353 | try: |
---|
1354 | if a['attribute'] and \ |
---|
1355 | isinstance(a['attribute'], basestring)\ |
---|
1356 | and not tbparam[tb].has_key(a['attribute'].lower()): |
---|
1357 | tbparam[tb][a['attribute'].lower()] = a['value'] |
---|
1358 | except KeyError: |
---|
1359 | self.log.error("Bad attribute in response: %s" % a) |
---|
1360 | |
---|
1361 | |
---|
1362 | def split_topology(self, top, topo, testbeds): |
---|
1363 | """ |
---|
1364 | Create the sub-topologies that are needed for experiment instantiation. |
---|
1365 | """ |
---|
1366 | for tb in testbeds: |
---|
1367 | topo[tb] = top.clone() |
---|
1368 | # copy in for loop allows deletions from the original |
---|
1369 | for e in [ e for e in topo[tb].elements]: |
---|
1370 | etb = e.get_attribute('testbed') |
---|
1371 | # NB: elements without a testbed attribute won't appear in any |
---|
1372 | # sub topologies. |
---|
1373 | if not etb or etb != tb: |
---|
1374 | for i in e.interface: |
---|
1375 | for s in i.subs: |
---|
1376 | try: |
---|
1377 | s.interfaces.remove(i) |
---|
1378 | except ValueError: |
---|
1379 | raise service_error(service_error.internal, |
---|
1380 | "Can't remove interface??") |
---|
1381 | topo[tb].elements.remove(e) |
---|
1382 | topo[tb].make_indices() |
---|
1383 | |
---|
1384 | def confirm_software(self, top): |
---|
1385 | """ |
---|
1386 | Make sure that the software to be loaded in the topo is all available |
---|
1387 | before we begin making access requests, etc. This is a subset of |
---|
1388 | wrangle_software. |
---|
1389 | """ |
---|
1390 | pkgs = set([ d for i, d in self.fedkit + self.gatewaykit ]) |
---|
1391 | pkgs.update([x.location for e in top.elements for x in e.software]) |
---|
1392 | |
---|
1393 | for pkg in pkgs: |
---|
1394 | loc = pkg |
---|
1395 | |
---|
1396 | scheme, host, path = urlparse(loc)[0:3] |
---|
1397 | dest = os.path.basename(path) |
---|
1398 | if not scheme: |
---|
1399 | if not loc.startswith('/'): |
---|
1400 | loc = "/%s" % loc |
---|
1401 | loc = "file://%s" %loc |
---|
1402 | # NB: if scheme was found, loc == pkg |
---|
1403 | try: |
---|
1404 | u = urlopen(loc) |
---|
1405 | u.close() |
---|
1406 | except Exception, e: |
---|
1407 | raise service_error(service_error.req, |
---|
1408 | "Cannot open %s: %s" % (loc, e)) |
---|
1409 | return True |
---|
1410 | |
---|
1411 | def wrangle_software(self, expid, top, topo, tbparams): |
---|
1412 | """ |
---|
1413 | Copy software out to the repository directory, allocate permissions and |
---|
1414 | rewrite the segment topologies to look for the software in local |
---|
1415 | places. |
---|
1416 | """ |
---|
1417 | |
---|
1418 | # Copy the rpms and tarfiles to a distribution directory from |
---|
1419 | # which the federants can retrieve them |
---|
1420 | linkpath = "%s/software" % expid |
---|
1421 | softdir ="%s/%s" % ( self.repodir, linkpath) |
---|
1422 | softmap = { } |
---|
1423 | |
---|
1424 | # self.fedkit and self.gateway kit are lists of tuples of |
---|
1425 | # (install_location, download_location) this extracts the download |
---|
1426 | # locations. |
---|
1427 | pkgs = set([ d for i, d in self.fedkit + self.gatewaykit ]) |
---|
1428 | pkgs.update([x.location for e in top.elements for x in e.software]) |
---|
1429 | try: |
---|
1430 | os.makedirs(softdir) |
---|
1431 | except EnvironmentError, e: |
---|
1432 | raise service_error( |
---|
1433 | "Cannot create software directory: %s" % e) |
---|
1434 | # The actual copying. Everything's converted into a url for copying. |
---|
1435 | auth_attrs = set() |
---|
1436 | for pkg in pkgs: |
---|
1437 | loc = pkg |
---|
1438 | |
---|
1439 | scheme, host, path = urlparse(loc)[0:3] |
---|
1440 | dest = os.path.basename(path) |
---|
1441 | if not scheme: |
---|
1442 | if not loc.startswith('/'): |
---|
1443 | loc = "/%s" % loc |
---|
1444 | loc = "file://%s" %loc |
---|
1445 | # NB: if scheme was found, loc == pkg |
---|
1446 | try: |
---|
1447 | u = urlopen(loc) |
---|
1448 | except Exception, e: |
---|
1449 | raise service_error(service_error.req, |
---|
1450 | "Cannot open %s: %s" % (loc, e)) |
---|
1451 | try: |
---|
1452 | f = open("%s/%s" % (softdir, dest) , "w") |
---|
1453 | self.log.debug("Writing %s/%s" % (softdir,dest) ) |
---|
1454 | data = u.read(4096) |
---|
1455 | while data: |
---|
1456 | f.write(data) |
---|
1457 | data = u.read(4096) |
---|
1458 | f.close() |
---|
1459 | u.close() |
---|
1460 | except Exception, e: |
---|
1461 | raise service_error(service_error.internal, |
---|
1462 | "Could not copy %s: %s" % (loc, e)) |
---|
1463 | path = re.sub("/tmp", "", linkpath) |
---|
1464 | # XXX |
---|
1465 | softmap[pkg] = \ |
---|
1466 | "%s/%s/%s" %\ |
---|
1467 | ( self.repo_url, path, dest) |
---|
1468 | |
---|
1469 | # Allow the individual segments to access the software by assigning |
---|
1470 | # an attribute to each testbed allocation that encodes the data to |
---|
1471 | # be released. This expression collects the data for each run of |
---|
1472 | # the loop. |
---|
1473 | auth_attrs.update([ |
---|
1474 | (tbparams[tb]['allocID']['fedid'], "/%s/%s" % ( path, dest)) \ |
---|
1475 | for tb in tbparams.keys()]) |
---|
1476 | |
---|
1477 | self.append_experiment_authorization(expid, auth_attrs) |
---|
1478 | |
---|
1479 | # Convert the software locations in the segments into the local |
---|
1480 | # copies on this host |
---|
1481 | for soft in [ s for tb in topo.values() \ |
---|
1482 | for e in tb.elements \ |
---|
1483 | if getattr(e, 'software', False) \ |
---|
1484 | for s in e.software ]: |
---|
1485 | if softmap.has_key(soft.location): |
---|
1486 | soft.location = softmap[soft.location] |
---|
1487 | |
---|
1488 | |
---|
1489 | def new_experiment(self, req, fid): |
---|
1490 | """ |
---|
1491 | The external interface to empty initial experiment creation called from |
---|
1492 | the dispatcher. |
---|
1493 | |
---|
1494 | Creates a working directory, splits the incoming description using the |
---|
1495 | splitter script and parses out the avrious subsections using the |
---|
1496 | lcasses above. Once each sub-experiment is created, use pooled threads |
---|
1497 | to instantiate them and start it all up. |
---|
1498 | """ |
---|
1499 | req = req.get('NewRequestBody', None) |
---|
1500 | if not req: |
---|
1501 | raise service_error(service_error.req, |
---|
1502 | "Bad request format (no NewRequestBody)") |
---|
1503 | |
---|
1504 | if self.auth.import_credentials(data_list=req.get('credential', [])): |
---|
1505 | self.auth.save() |
---|
1506 | |
---|
1507 | access_ok, proof = self.auth.check_attribute(fid, 'new', |
---|
1508 | with_proof=True) |
---|
1509 | |
---|
1510 | if not access_ok: |
---|
1511 | raise service_error(service_error.access, "New access denied", |
---|
1512 | proof=[proof]) |
---|
1513 | |
---|
1514 | try: |
---|
1515 | tmpdir = tempfile.mkdtemp(prefix="split-") |
---|
1516 | except EnvironmentError: |
---|
1517 | raise service_error(service_error.internal, "Cannot create tmp dir") |
---|
1518 | |
---|
1519 | try: |
---|
1520 | access_user = self.accessdb[fid] |
---|
1521 | except KeyError: |
---|
1522 | raise service_error(service_error.internal, |
---|
1523 | "Access map and authorizer out of sync in " + \ |
---|
1524 | "new_experiment for fedid %s" % fid) |
---|
1525 | |
---|
1526 | # Generate an ID for the experiment (slice) and a certificate that the |
---|
1527 | # allocator can use to prove they own it. We'll ship it back through |
---|
1528 | # the encrypted connection. If the requester supplied one, use it. |
---|
1529 | if 'experimentAccess' in req and 'X509' in req['experimentAccess']: |
---|
1530 | expcert = req['experimentAccess']['X509'] |
---|
1531 | expid = fedid(certstr=expcert) |
---|
1532 | self.state_lock.acquire() |
---|
1533 | if expid in self.state: |
---|
1534 | self.state_lock.release() |
---|
1535 | raise service_error(service_error.req, |
---|
1536 | 'fedid %s identifies an existing experiment' % expid) |
---|
1537 | self.state_lock.release() |
---|
1538 | else: |
---|
1539 | (expid, expcert) = generate_fedid("test", dir=tmpdir, log=self.log) |
---|
1540 | |
---|
1541 | #now we're done with the tmpdir, and it should be empty |
---|
1542 | if self.cleanup: |
---|
1543 | self.log.debug("[new_experiment]: removing %s" % tmpdir) |
---|
1544 | os.rmdir(tmpdir) |
---|
1545 | else: |
---|
1546 | self.log.debug("[new_experiment]: not removing %s" % tmpdir) |
---|
1547 | |
---|
1548 | eid = self.create_experiment_state(fid, req, expid, expcert, |
---|
1549 | state='empty') |
---|
1550 | |
---|
1551 | rv = { |
---|
1552 | 'experimentID': [ |
---|
1553 | {'localname' : eid }, { 'fedid': copy.copy(expid) } |
---|
1554 | ], |
---|
1555 | 'experimentStatus': 'empty', |
---|
1556 | 'experimentAccess': { 'X509' : expcert }, |
---|
1557 | 'proof': proof.to_dict(), |
---|
1558 | } |
---|
1559 | |
---|
1560 | return rv |
---|
1561 | |
---|
1562 | # create_experiment sub-functions |
---|
1563 | |
---|
1564 | @staticmethod |
---|
1565 | def get_experiment_key(req, field='experimentID'): |
---|
1566 | """ |
---|
1567 | Parse the experiment identifiers out of the request (the request body |
---|
1568 | tag has been removed). Specifically this pulls either the fedid or the |
---|
1569 | localname out of the experimentID field. A fedid is preferred. If |
---|
1570 | neither is present or the request does not contain the fields, |
---|
1571 | service_errors are raised. |
---|
1572 | """ |
---|
1573 | # Get the experiment access |
---|
1574 | exp = req.get(field, None) |
---|
1575 | if exp: |
---|
1576 | if exp.has_key('fedid'): |
---|
1577 | key = exp['fedid'] |
---|
1578 | elif exp.has_key('localname'): |
---|
1579 | key = exp['localname'] |
---|
1580 | else: |
---|
1581 | raise service_error(service_error.req, "Unknown lookup type") |
---|
1582 | else: |
---|
1583 | raise service_error(service_error.req, "No request?") |
---|
1584 | |
---|
1585 | return key |
---|
1586 | |
---|
1587 | def get_experiment_ids_and_start(self, key, tmpdir): |
---|
1588 | """ |
---|
1589 | Get the experiment name, id and access certificate from the state, and |
---|
1590 | set the experiment state to 'starting'. returns a triple (fedid, |
---|
1591 | localname, access_cert_file). The access_cert_file is a copy of the |
---|
1592 | contents of the access certificate, created in the tempdir with |
---|
1593 | restricted permissions. If things are confused, raise an exception. |
---|
1594 | """ |
---|
1595 | |
---|
1596 | expid = eid = None |
---|
1597 | self.state_lock.acquire() |
---|
1598 | if self.state.has_key(key): |
---|
1599 | self.state[key]['experimentStatus'] = "starting" |
---|
1600 | for e in self.state[key].get('experimentID',[]): |
---|
1601 | if not expid and e.has_key('fedid'): |
---|
1602 | expid = e['fedid'] |
---|
1603 | elif not eid and e.has_key('localname'): |
---|
1604 | eid = e['localname'] |
---|
1605 | if 'experimentAccess' in self.state[key] and \ |
---|
1606 | 'X509' in self.state[key]['experimentAccess']: |
---|
1607 | expcert = self.state[key]['experimentAccess']['X509'] |
---|
1608 | else: |
---|
1609 | expcert = None |
---|
1610 | self.state_lock.release() |
---|
1611 | |
---|
1612 | # make a protected copy of the access certificate so the experiment |
---|
1613 | # controller can act as the experiment principal. |
---|
1614 | if expcert: |
---|
1615 | expcert_file = self.make_temp_certfile(expcert, tmpdir) |
---|
1616 | if not expcert_file: |
---|
1617 | raise service_error(service_error.internal, |
---|
1618 | "Cannot create temp cert file?") |
---|
1619 | else: |
---|
1620 | expcert_file = None |
---|
1621 | |
---|
1622 | return (eid, expid, expcert_file) |
---|
1623 | |
---|
1624 | def get_topology(self, req, tmpdir): |
---|
1625 | """ |
---|
1626 | Get the ns2 content and put it into a file for parsing. Call the local |
---|
1627 | or remote parser and return the topdl.Topology. Errors result in |
---|
1628 | exceptions. req is the request and tmpdir is a work directory. |
---|
1629 | """ |
---|
1630 | |
---|
1631 | # The tcl parser needs to read a file so put the content into that file |
---|
1632 | descr=req.get('experimentdescription', None) |
---|
1633 | if descr: |
---|
1634 | if 'ns2description' in descr: |
---|
1635 | file_content=descr['ns2description'] |
---|
1636 | elif 'topdldescription' in descr: |
---|
1637 | return topdl.Topology(**descr['topdldescription']) |
---|
1638 | else: |
---|
1639 | raise service_error(service_error.req, |
---|
1640 | 'Unknown experiment description type') |
---|
1641 | else: |
---|
1642 | raise service_error(service_error.req, "No experiment description") |
---|
1643 | |
---|
1644 | |
---|
1645 | if self.splitter_url: |
---|
1646 | self.log.debug("Calling remote topdl translator at %s" % \ |
---|
1647 | self.splitter_url) |
---|
1648 | top = self.remote_ns2topdl(self.splitter_url, file_content) |
---|
1649 | else: |
---|
1650 | tclfile = os.path.join(tmpdir, "experiment.tcl") |
---|
1651 | if file_content: |
---|
1652 | try: |
---|
1653 | f = open(tclfile, 'w') |
---|
1654 | f.write(file_content) |
---|
1655 | f.close() |
---|
1656 | except EnvironmentError: |
---|
1657 | raise service_error(service_error.internal, |
---|
1658 | "Cannot write temp experiment description") |
---|
1659 | else: |
---|
1660 | raise service_error(service_error.req, |
---|
1661 | "Only ns2descriptions supported") |
---|
1662 | pid = "dummy" |
---|
1663 | gid = "dummy" |
---|
1664 | eid = "dummy" |
---|
1665 | |
---|
1666 | tclcmd = [self.tclsh, self.tcl_splitter, '-t', '-x', |
---|
1667 | str(self.muxmax), '-m', 'dummy'] |
---|
1668 | |
---|
1669 | tclcmd.extend([pid, gid, eid, tclfile]) |
---|
1670 | |
---|
1671 | self.log.debug("running local splitter %s", " ".join(tclcmd)) |
---|
1672 | # This is just fantastic. As a side effect the parser copies |
---|
1673 | # tb_compat.tcl into the current directory, so that directory |
---|
1674 | # must be writable by the fedd user. Doing this in the |
---|
1675 | # temporary subdir ensures this is the case. |
---|
1676 | tclparser = Popen(tclcmd, stdout=PIPE, close_fds=True, |
---|
1677 | cwd=tmpdir) |
---|
1678 | split_data = tclparser.stdout |
---|
1679 | |
---|
1680 | top = topdl.topology_from_xml(file=split_data, top="experiment") |
---|
1681 | os.remove(tclfile) |
---|
1682 | |
---|
1683 | return top |
---|
1684 | |
---|
1685 | def get_testbed_services(self, req, testbeds): |
---|
1686 | """ |
---|
1687 | Parse the services section of the request into into two dicts mapping |
---|
1688 | testbed to lists of federated_service objects. The first lists all |
---|
1689 | exporters of services, and the second all exporters of services that |
---|
1690 | need control portals int the experiment. |
---|
1691 | """ |
---|
1692 | masters = { } |
---|
1693 | pmasters = { } |
---|
1694 | for s in req.get('service', []): |
---|
1695 | # If this is a service request with the importall field |
---|
1696 | # set, fill it out. |
---|
1697 | |
---|
1698 | if s.get('importall', False): |
---|
1699 | s['import'] = [ tb for tb in testbeds \ |
---|
1700 | if tb not in s.get('export',[])] |
---|
1701 | del s['importall'] |
---|
1702 | |
---|
1703 | # Add the service to masters |
---|
1704 | for tb in s.get('export', []): |
---|
1705 | if s.get('name', None): |
---|
1706 | |
---|
1707 | params = { } |
---|
1708 | for a in s.get('fedAttr', []): |
---|
1709 | params[a.get('attribute', '')] = a.get('value','') |
---|
1710 | |
---|
1711 | fser = federated_service(name=s['name'], |
---|
1712 | exporter=tb, importers=s.get('import',[]), |
---|
1713 | params=params) |
---|
1714 | if fser.name == 'hide_hosts' \ |
---|
1715 | and 'hosts' not in fser.params: |
---|
1716 | fser.params['hosts'] = \ |
---|
1717 | ",".join(tb_hosts.get(fser.exporter, [])) |
---|
1718 | if tb in masters: masters[tb].append(fser) |
---|
1719 | else: masters[tb] = [fser] |
---|
1720 | |
---|
1721 | if fser.portal: |
---|
1722 | if tb not in pmasters: pmasters[tb] = [ fser ] |
---|
1723 | else: pmasters[tb].append(fser) |
---|
1724 | else: |
---|
1725 | self.log.error('Testbed service does not have name " + \ |
---|
1726 | "and importers') |
---|
1727 | return masters, pmasters |
---|
1728 | |
---|
1729 | def generate_keys_and_hosts(self, tmpdir, expid, hosts, tbparams): |
---|
1730 | """ |
---|
1731 | Create the ssh keys necessary for interconnecting the potral nodes and |
---|
1732 | the global hosts file for letting each segment know about the IP |
---|
1733 | addresses in play. Save these into the repo. Add attributes to the |
---|
1734 | autorizer allowing access controllers to download them and return a set |
---|
1735 | of attributes that inform the segments where to find this stuff. Mau |
---|
1736 | raise service_errors in if there are problems. |
---|
1737 | """ |
---|
1738 | gw_pubkey_base = "fed.%s.pub" % self.ssh_type |
---|
1739 | gw_secretkey_base = "fed.%s" % self.ssh_type |
---|
1740 | gw_pubkey = tmpdir + "/keys/" + gw_pubkey_base |
---|
1741 | gw_secretkey = tmpdir + "/keys/" + gw_secretkey_base |
---|
1742 | |
---|
1743 | try: |
---|
1744 | self.generate_ssh_keys(gw_secretkey, self.ssh_type) |
---|
1745 | except ValueError: |
---|
1746 | raise service_error(service_error.server_config, |
---|
1747 | "Bad key type (%s)" % self.ssh_type) |
---|
1748 | |
---|
1749 | |
---|
1750 | # Copy configuration files into the remote file store |
---|
1751 | # The config urlpath |
---|
1752 | configpath = "/%s/config" % expid |
---|
1753 | # The config file system location |
---|
1754 | configdir ="%s%s" % ( self.repodir, configpath) |
---|
1755 | try: |
---|
1756 | os.makedirs(configdir) |
---|
1757 | except EnvironmentError, e: |
---|
1758 | raise service_error(service_error.internal, |
---|
1759 | "Cannot create config directory: %s" % e) |
---|
1760 | try: |
---|
1761 | f = open("%s/hosts" % configdir, "w") |
---|
1762 | print >> f, string.join(hosts, '\n') |
---|
1763 | f.close() |
---|
1764 | except EnvironmentError, e: |
---|
1765 | raise service_error(service_error.internal, |
---|
1766 | "Cannot write hosts file: %s" % e) |
---|
1767 | try: |
---|
1768 | copy_file("%s" % gw_pubkey, "%s/%s" % \ |
---|
1769 | (configdir, gw_pubkey_base)) |
---|
1770 | copy_file("%s" % gw_secretkey, "%s/%s" % \ |
---|
1771 | (configdir, gw_secretkey_base)) |
---|
1772 | except EnvironmentError, e: |
---|
1773 | raise service_error(service_error.internal, |
---|
1774 | "Cannot copy keyfiles: %s" % e) |
---|
1775 | |
---|
1776 | # Allow the individual testbeds to access the configuration files, |
---|
1777 | # again by setting an attribute for the relevant pathnames on each |
---|
1778 | # allocation principal. Yeah, that's a long list comprehension. |
---|
1779 | self.append_experiment_authorization(expid, set([ |
---|
1780 | (tbparams[tb]['allocID']['fedid'], "%s/%s" % (configpath, f)) \ |
---|
1781 | for tb in tbparams.keys() \ |
---|
1782 | for f in ("hosts", gw_secretkey_base, gw_pubkey_base)])) |
---|
1783 | |
---|
1784 | attrs = [ |
---|
1785 | { |
---|
1786 | 'attribute': 'ssh_pubkey', |
---|
1787 | 'value': '%s/%s/config/%s' % \ |
---|
1788 | (self.repo_url, expid, gw_pubkey_base) |
---|
1789 | }, |
---|
1790 | { |
---|
1791 | 'attribute': 'ssh_secretkey', |
---|
1792 | 'value': '%s/%s/config/%s' % \ |
---|
1793 | (self.repo_url, expid, gw_secretkey_base) |
---|
1794 | }, |
---|
1795 | { |
---|
1796 | 'attribute': 'hosts', |
---|
1797 | 'value': '%s/%s/config/hosts' % \ |
---|
1798 | (self.repo_url, expid) |
---|
1799 | }, |
---|
1800 | ] |
---|
1801 | return attrs |
---|
1802 | |
---|
1803 | |
---|
1804 | def get_vtopo(self, req, fid): |
---|
1805 | """ |
---|
1806 | Return the stored virtual topology for this experiment |
---|
1807 | """ |
---|
1808 | rv = None |
---|
1809 | state = None |
---|
1810 | |
---|
1811 | req = req.get('VtopoRequestBody', None) |
---|
1812 | if not req: |
---|
1813 | raise service_error(service_error.req, |
---|
1814 | "Bad request format (no VtopoRequestBody)") |
---|
1815 | exp = req.get('experiment', None) |
---|
1816 | if exp: |
---|
1817 | if exp.has_key('fedid'): |
---|
1818 | key = exp['fedid'] |
---|
1819 | keytype = "fedid" |
---|
1820 | elif exp.has_key('localname'): |
---|
1821 | key = exp['localname'] |
---|
1822 | keytype = "localname" |
---|
1823 | else: |
---|
1824 | raise service_error(service_error.req, "Unknown lookup type") |
---|
1825 | else: |
---|
1826 | raise service_error(service_error.req, "No request?") |
---|
1827 | |
---|
1828 | proof = self.check_experiment_access(fid, key) |
---|
1829 | |
---|
1830 | self.state_lock.acquire() |
---|
1831 | if self.state.has_key(key): |
---|
1832 | if self.state[key].has_key('vtopo'): |
---|
1833 | rv = { 'experiment' : {keytype: key }, |
---|
1834 | 'vtopo': self.state[key]['vtopo'], |
---|
1835 | 'proof': proof.to_dict(), |
---|
1836 | } |
---|
1837 | else: |
---|
1838 | state = self.state[key]['experimentStatus'] |
---|
1839 | self.state_lock.release() |
---|
1840 | |
---|
1841 | if rv: return rv |
---|
1842 | else: |
---|
1843 | if state: |
---|
1844 | raise service_error(service_error.partial, |
---|
1845 | "Not ready: %s" % state) |
---|
1846 | else: |
---|
1847 | raise service_error(service_error.req, "No such experiment") |
---|
1848 | |
---|
1849 | def get_vis(self, req, fid): |
---|
1850 | """ |
---|
1851 | Return the stored visualization for this experiment |
---|
1852 | """ |
---|
1853 | rv = None |
---|
1854 | state = None |
---|
1855 | |
---|
1856 | req = req.get('VisRequestBody', None) |
---|
1857 | if not req: |
---|
1858 | raise service_error(service_error.req, |
---|
1859 | "Bad request format (no VisRequestBody)") |
---|
1860 | exp = req.get('experiment', None) |
---|
1861 | if exp: |
---|
1862 | if exp.has_key('fedid'): |
---|
1863 | key = exp['fedid'] |
---|
1864 | keytype = "fedid" |
---|
1865 | elif exp.has_key('localname'): |
---|
1866 | key = exp['localname'] |
---|
1867 | keytype = "localname" |
---|
1868 | else: |
---|
1869 | raise service_error(service_error.req, "Unknown lookup type") |
---|
1870 | else: |
---|
1871 | raise service_error(service_error.req, "No request?") |
---|
1872 | |
---|
1873 | proof = self.check_experiment_access(fid, key) |
---|
1874 | |
---|
1875 | self.state_lock.acquire() |
---|
1876 | if self.state.has_key(key): |
---|
1877 | if self.state[key].has_key('vis'): |
---|
1878 | rv = { 'experiment' : {keytype: key }, |
---|
1879 | 'vis': self.state[key]['vis'], |
---|
1880 | 'proof': proof.to_dict(), |
---|
1881 | } |
---|
1882 | else: |
---|
1883 | state = self.state[key]['experimentStatus'] |
---|
1884 | self.state_lock.release() |
---|
1885 | |
---|
1886 | if rv: return rv |
---|
1887 | else: |
---|
1888 | if state: |
---|
1889 | raise service_error(service_error.partial, |
---|
1890 | "Not ready: %s" % state) |
---|
1891 | else: |
---|
1892 | raise service_error(service_error.req, "No such experiment") |
---|
1893 | |
---|
1894 | |
---|
1895 | def save_federant_information(self, allocated, tbparams, eid, vtopo, vis, |
---|
1896 | top): |
---|
1897 | """ |
---|
1898 | Store the various data that have changed in the experiment state |
---|
1899 | between when it was started and the beginning of resource allocation. |
---|
1900 | This is basically the information about each local allocation. This |
---|
1901 | fills in the values of the placeholder allocation in the state. It |
---|
1902 | also collects the access proofs and returns them as dicts for a |
---|
1903 | response message. |
---|
1904 | """ |
---|
1905 | # save federant information |
---|
1906 | for k in allocated.keys(): |
---|
1907 | tbparams[k]['federant'] = { |
---|
1908 | 'name': [ { 'localname' : eid} ], |
---|
1909 | 'allocID' : tbparams[k]['allocID'], |
---|
1910 | 'uri': tbparams[k]['uri'], |
---|
1911 | 'proof': tbparams[k]['proof'], |
---|
1912 | } |
---|
1913 | |
---|
1914 | self.state_lock.acquire() |
---|
1915 | self.state[eid]['vtopo'] = vtopo |
---|
1916 | self.state[eid]['vis'] = vis |
---|
1917 | self.state[eid]['experimentdescription'] = \ |
---|
1918 | { 'topdldescription': top.to_dict() } |
---|
1919 | self.state[eid]['federant'] = \ |
---|
1920 | [ tbparams[tb]['federant'] for tb in tbparams.keys() \ |
---|
1921 | if tbparams[tb].has_key('federant') ] |
---|
1922 | # Access proofs for the response message |
---|
1923 | proofs = [copy.deepcopy(p) for k in tbparams.keys()\ |
---|
1924 | for p in tbparams[k]['federant']['proof']] |
---|
1925 | if self.state_filename: |
---|
1926 | self.write_state() |
---|
1927 | self.state_lock.release() |
---|
1928 | return proofs |
---|
1929 | |
---|
1930 | def clear_placeholder(self, eid, expid, tmpdir): |
---|
1931 | """ |
---|
1932 | Clear the placeholder and remove any allocated temporary dir. |
---|
1933 | """ |
---|
1934 | |
---|
1935 | self.state_lock.acquire() |
---|
1936 | del self.state[eid] |
---|
1937 | del self.state[expid] |
---|
1938 | if self.state_filename: self.write_state() |
---|
1939 | self.state_lock.release() |
---|
1940 | if tmpdir and self.cleanup: |
---|
1941 | self.remove_dirs(tmpdir) |
---|
1942 | |
---|
1943 | # end of create_experiment sub-functions |
---|
1944 | |
---|
1945 | def create_experiment(self, req, fid): |
---|
1946 | """ |
---|
1947 | The external interface to experiment creation called from the |
---|
1948 | dispatcher. |
---|
1949 | |
---|
1950 | Creates a working directory, splits the incoming description using the |
---|
1951 | splitter script and parses out the various subsections using the |
---|
1952 | classes above. Once each sub-experiment is created, use pooled threads |
---|
1953 | to instantiate them and start it all up. |
---|
1954 | """ |
---|
1955 | |
---|
1956 | req = req.get('CreateRequestBody', None) |
---|
1957 | if req: |
---|
1958 | key = self.get_experiment_key(req) |
---|
1959 | else: |
---|
1960 | raise service_error(service_error.req, |
---|
1961 | "Bad request format (no CreateRequestBody)") |
---|
1962 | |
---|
1963 | # Import information from the requester |
---|
1964 | if self.auth.import_credentials(data_list=req.get('credential', [])): |
---|
1965 | self.auth.save() |
---|
1966 | |
---|
1967 | # Make sure that the caller can talk to us |
---|
1968 | proof = self.check_experiment_access(fid, key) |
---|
1969 | |
---|
1970 | # Install the testbed map entries supplied with the request into a copy |
---|
1971 | # of the testbed map. |
---|
1972 | tbmap = dict(self.tbmap) |
---|
1973 | for m in req.get('testbedmap', []): |
---|
1974 | if 'testbed' in m and 'uri' in m: |
---|
1975 | tbmap[m['testbed']] = m['uri'] |
---|
1976 | |
---|
1977 | # a place to work |
---|
1978 | try: |
---|
1979 | tmpdir = tempfile.mkdtemp(prefix="split-") |
---|
1980 | os.mkdir(tmpdir+"/keys") |
---|
1981 | except EnvironmentError: |
---|
1982 | raise service_error(service_error.internal, "Cannot create tmp dir") |
---|
1983 | |
---|
1984 | tbparams = { } |
---|
1985 | |
---|
1986 | eid, expid, expcert_file = \ |
---|
1987 | self.get_experiment_ids_and_start(key, tmpdir) |
---|
1988 | |
---|
1989 | # This catches exceptions to clear the placeholder if necessary |
---|
1990 | try: |
---|
1991 | if not (eid and expid): |
---|
1992 | raise service_error(service_error.internal, |
---|
1993 | "Cannot find local experiment info!?") |
---|
1994 | |
---|
1995 | top = self.get_topology(req, tmpdir) |
---|
1996 | self.confirm_software(top) |
---|
1997 | # Assign the IPs |
---|
1998 | hosts, ip_allocator = self.allocate_ips_to_topo(top) |
---|
1999 | # Find the testbeds to look up |
---|
2000 | tb_hosts = { } |
---|
2001 | testbeds = [ ] |
---|
2002 | for e in top.elements: |
---|
2003 | if isinstance(e, topdl.Computer): |
---|
2004 | tb = e.get_attribute('testbed') or 'default' |
---|
2005 | if tb in tb_hosts: tb_hosts[tb].append(e.name) |
---|
2006 | else: |
---|
2007 | tb_hosts[tb] = [ e.name ] |
---|
2008 | testbeds.append(tb) |
---|
2009 | |
---|
2010 | masters, pmasters = self.get_testbed_services(req, testbeds) |
---|
2011 | allocated = { } # Testbeds we can access |
---|
2012 | topo ={ } # Sub topologies |
---|
2013 | connInfo = { } # Connection information |
---|
2014 | |
---|
2015 | self.split_topology(top, topo, testbeds) |
---|
2016 | |
---|
2017 | self.get_access_to_testbeds(testbeds, fid, allocated, |
---|
2018 | tbparams, masters, tbmap, expid, expcert_file) |
---|
2019 | |
---|
2020 | attrs = self.generate_keys_and_hosts(tmpdir, expid, hosts, tbparams) |
---|
2021 | |
---|
2022 | part = experiment_partition(self.auth, self.store_url, tbmap, |
---|
2023 | self.muxmax, self.direct_transit) |
---|
2024 | part.add_portals(top, topo, eid, pmasters, tbparams, ip_allocator, |
---|
2025 | connInfo, expid) |
---|
2026 | |
---|
2027 | auth_attrs = set() |
---|
2028 | # Now get access to the dynamic testbeds (those added above) |
---|
2029 | for tb in [ t for t in topo if t not in allocated]: |
---|
2030 | self.get_access(tb, tbparams, fid, masters, tbmap, |
---|
2031 | expid, expcert_file) |
---|
2032 | allocated[tb] = 1 |
---|
2033 | store_keys = topo[tb].get_attribute('store_keys') |
---|
2034 | # Give the testbed access to keys it exports or imports |
---|
2035 | if store_keys: |
---|
2036 | auth_attrs.update(set([ |
---|
2037 | (tbparams[tb]['allocID']['fedid'], sk) \ |
---|
2038 | for sk in store_keys.split(" ")])) |
---|
2039 | |
---|
2040 | if auth_attrs: |
---|
2041 | self.append_experiment_authorization(expid, auth_attrs) |
---|
2042 | |
---|
2043 | # transit and disconnected testbeds may not have a connInfo entry. |
---|
2044 | # Fill in the blanks. |
---|
2045 | for t in allocated.keys(): |
---|
2046 | if not connInfo.has_key(t): |
---|
2047 | connInfo[t] = { } |
---|
2048 | |
---|
2049 | self.wrangle_software(expid, top, topo, tbparams) |
---|
2050 | |
---|
2051 | vtopo = topdl.topology_to_vtopo(top) |
---|
2052 | vis = self.genviz(vtopo) |
---|
2053 | proofs = self.save_federant_information(allocated, tbparams, |
---|
2054 | eid, vtopo, vis, top) |
---|
2055 | except service_error, e: |
---|
2056 | # If something goes wrong in the parse (usually an access error) |
---|
2057 | # clear the placeholder state. From here on out the code delays |
---|
2058 | # exceptions. Failing at this point returns a fault to the remote |
---|
2059 | # caller. |
---|
2060 | self.clear_placeholder(eid, expid, tmpdir) |
---|
2061 | raise e |
---|
2062 | |
---|
2063 | # Start the background swapper and return the starting state. From |
---|
2064 | # here on out, the state will stick around a while. |
---|
2065 | |
---|
2066 | # Create a logger that logs to the experiment's state object as well as |
---|
2067 | # to the main log file. |
---|
2068 | alloc_log = logging.getLogger('fedd.experiment_control.%s' % eid) |
---|
2069 | alloc_collector = self.list_log(self.state[eid]['log']) |
---|
2070 | h = logging.StreamHandler(alloc_collector) |
---|
2071 | # XXX: there should be a global one of these rather than repeating the |
---|
2072 | # code. |
---|
2073 | h.setFormatter(logging.Formatter("%(asctime)s %(name)s %(message)s", |
---|
2074 | '%d %b %y %H:%M:%S')) |
---|
2075 | alloc_log.addHandler(h) |
---|
2076 | |
---|
2077 | # Start a thread to do the resource allocation |
---|
2078 | t = Thread(target=self.allocate_resources, |
---|
2079 | args=(allocated, masters, eid, expid, tbparams, |
---|
2080 | top, topo, tmpdir, alloc_log, alloc_collector, attrs, |
---|
2081 | connInfo, tbmap, expcert_file), |
---|
2082 | name=eid) |
---|
2083 | t.start() |
---|
2084 | |
---|
2085 | rv = { |
---|
2086 | 'experimentID': [ |
---|
2087 | {'localname' : eid }, { 'fedid': copy.copy(expid) } |
---|
2088 | ], |
---|
2089 | 'experimentStatus': 'starting', |
---|
2090 | 'proof': [ proof.to_dict() ] + proofs, |
---|
2091 | } |
---|
2092 | |
---|
2093 | return rv |
---|
2094 | |
---|
2095 | def get_experiment_fedid(self, key): |
---|
2096 | """ |
---|
2097 | find the fedid associated with the localname key in the state database. |
---|
2098 | """ |
---|
2099 | |
---|
2100 | rv = None |
---|
2101 | self.state_lock.acquire() |
---|
2102 | if self.state.has_key(key): |
---|
2103 | if isinstance(self.state[key], dict): |
---|
2104 | try: |
---|
2105 | kl = [ f['fedid'] for f in \ |
---|
2106 | self.state[key]['experimentID']\ |
---|
2107 | if f.has_key('fedid') ] |
---|
2108 | except KeyError: |
---|
2109 | self.state_lock.release() |
---|
2110 | raise service_error(service_error.internal, |
---|
2111 | "No fedid for experiment %s when getting "+\ |
---|
2112 | "fedid(!?)" % key) |
---|
2113 | if len(kl) == 1: |
---|
2114 | rv = kl[0] |
---|
2115 | else: |
---|
2116 | self.state_lock.release() |
---|
2117 | raise service_error(service_error.internal, |
---|
2118 | "multiple fedids for experiment %s when " +\ |
---|
2119 | "getting fedid(!?)" % key) |
---|
2120 | else: |
---|
2121 | self.state_lock.release() |
---|
2122 | raise service_error(service_error.internal, |
---|
2123 | "Unexpected state for %s" % key) |
---|
2124 | self.state_lock.release() |
---|
2125 | return rv |
---|
2126 | |
---|
2127 | def check_experiment_access(self, fid, key): |
---|
2128 | """ |
---|
2129 | Confirm that the fid has access to the experiment. Though a request |
---|
2130 | may be made in terms of a local name, the access attribute is always |
---|
2131 | the experiment's fedid. |
---|
2132 | """ |
---|
2133 | if not isinstance(key, fedid): |
---|
2134 | key = self.get_experiment_fedid(key) |
---|
2135 | |
---|
2136 | access_ok, proof = self.auth.check_attribute(fid, key, with_proof=True) |
---|
2137 | |
---|
2138 | if access_ok: |
---|
2139 | return proof |
---|
2140 | else: |
---|
2141 | raise service_error(service_error.access, "Access Denied", |
---|
2142 | proof) |
---|
2143 | |
---|
2144 | |
---|
2145 | def get_handler(self, path, fid): |
---|
2146 | """ |
---|
2147 | Perhaps surprisingly named, this function handles HTTP GET requests to |
---|
2148 | this server (SOAP requests are POSTs). |
---|
2149 | """ |
---|
2150 | self.log.info("Get handler %s %s" % (path, fid)) |
---|
2151 | # XXX: log proofs? |
---|
2152 | if self.auth.check_attribute(fid, path): |
---|
2153 | return ("%s/%s" % (self.repodir, path), "application/binary") |
---|
2154 | else: |
---|
2155 | return (None, None) |
---|
2156 | |
---|
2157 | def clean_info_response(self, rv, proof): |
---|
2158 | """ |
---|
2159 | Remove the information in the experiment's state object that is not in |
---|
2160 | the info response. |
---|
2161 | """ |
---|
2162 | # Remove the owner info (should always be there, but...) |
---|
2163 | if rv.has_key('owner'): del rv['owner'] |
---|
2164 | if 'auth' in rv: del rv['auth'] |
---|
2165 | |
---|
2166 | # Convert the log into the allocationLog parameter and remove the |
---|
2167 | # log entry (with defensive programming) |
---|
2168 | if rv.has_key('log'): |
---|
2169 | rv['allocationLog'] = "".join(rv['log']) |
---|
2170 | del rv['log'] |
---|
2171 | else: |
---|
2172 | rv['allocationLog'] = "" |
---|
2173 | |
---|
2174 | if rv['experimentStatus'] != 'active': |
---|
2175 | if rv.has_key('federant'): del rv['federant'] |
---|
2176 | else: |
---|
2177 | # remove the allocationID and uri info from each federant |
---|
2178 | for f in rv.get('federant', []): |
---|
2179 | if f.has_key('allocID'): del f['allocID'] |
---|
2180 | if f.has_key('uri'): del f['uri'] |
---|
2181 | rv['proof'] = proof.to_dict() |
---|
2182 | |
---|
2183 | return rv |
---|
2184 | |
---|
2185 | def get_info(self, req, fid): |
---|
2186 | """ |
---|
2187 | Return all the stored info about this experiment |
---|
2188 | """ |
---|
2189 | rv = None |
---|
2190 | |
---|
2191 | req = req.get('InfoRequestBody', None) |
---|
2192 | if not req: |
---|
2193 | raise service_error(service_error.req, |
---|
2194 | "Bad request format (no InfoRequestBody)") |
---|
2195 | exp = req.get('experiment', None) |
---|
2196 | if exp: |
---|
2197 | if exp.has_key('fedid'): |
---|
2198 | key = exp['fedid'] |
---|
2199 | keytype = "fedid" |
---|
2200 | elif exp.has_key('localname'): |
---|
2201 | key = exp['localname'] |
---|
2202 | keytype = "localname" |
---|
2203 | else: |
---|
2204 | raise service_error(service_error.req, "Unknown lookup type") |
---|
2205 | else: |
---|
2206 | raise service_error(service_error.req, "No request?") |
---|
2207 | |
---|
2208 | proof = self.check_experiment_access(fid, key) |
---|
2209 | |
---|
2210 | # The state may be massaged by the service function that called |
---|
2211 | # get_info (e.g., encoded for XMLRPC transport) so send a copy of the |
---|
2212 | # state. |
---|
2213 | self.state_lock.acquire() |
---|
2214 | if self.state.has_key(key): |
---|
2215 | rv = copy.deepcopy(self.state[key]) |
---|
2216 | self.state_lock.release() |
---|
2217 | |
---|
2218 | if rv: |
---|
2219 | return self.clean_info_response(rv, proof) |
---|
2220 | else: |
---|
2221 | raise service_error(service_error.req, "No such experiment") |
---|
2222 | |
---|
2223 | def get_multi_info(self, req, fid): |
---|
2224 | """ |
---|
2225 | Return all the stored info that this fedid can access |
---|
2226 | """ |
---|
2227 | rv = { 'info': [ ], 'proof': [ ] } |
---|
2228 | |
---|
2229 | self.state_lock.acquire() |
---|
2230 | for key in [ k for k in self.state.keys() if isinstance(k, fedid)]: |
---|
2231 | try: |
---|
2232 | proof = self.check_experiment_access(fid, key) |
---|
2233 | except service_error, e: |
---|
2234 | if e.code == service_error.access: |
---|
2235 | continue |
---|
2236 | else: |
---|
2237 | self.state_lock.release() |
---|
2238 | raise e |
---|
2239 | |
---|
2240 | if self.state.has_key(key): |
---|
2241 | e = copy.deepcopy(self.state[key]) |
---|
2242 | e = self.clean_info_response(e, proof) |
---|
2243 | rv['info'].append(e) |
---|
2244 | rv['proof'].append(proof.to_dict()) |
---|
2245 | self.state_lock.release() |
---|
2246 | return rv |
---|
2247 | |
---|
2248 | def check_termination_status(self, fed_exp, force): |
---|
2249 | """ |
---|
2250 | Confirm that the experiment is sin a valid state to stop (or force it) |
---|
2251 | return the state - invalid states for deletion and force settings cause |
---|
2252 | exceptions. |
---|
2253 | """ |
---|
2254 | self.state_lock.acquire() |
---|
2255 | status = fed_exp.get('experimentStatus', None) |
---|
2256 | |
---|
2257 | if status: |
---|
2258 | if status in ('starting', 'terminating'): |
---|
2259 | if not force: |
---|
2260 | self.state_lock.release() |
---|
2261 | raise service_error(service_error.partial, |
---|
2262 | 'Experiment still being created or destroyed') |
---|
2263 | else: |
---|
2264 | self.log.warning('Experiment in %s state ' % status + \ |
---|
2265 | 'being terminated by force.') |
---|
2266 | self.state_lock.release() |
---|
2267 | return status |
---|
2268 | else: |
---|
2269 | # No status??? trouble |
---|
2270 | self.state_lock.release() |
---|
2271 | raise service_error(service_error.internal, |
---|
2272 | "Experiment has no status!?") |
---|
2273 | |
---|
2274 | |
---|
2275 | def get_termination_info(self, fed_exp): |
---|
2276 | ids = [] |
---|
2277 | term_params = { } |
---|
2278 | self.state_lock.acquire() |
---|
2279 | # experimentID is a list of dicts that are self-describing |
---|
2280 | # identifiers. This finds all the fedids and localnames - the |
---|
2281 | # keys of self.state - and puts them into ids, which is used to delete |
---|
2282 | # the state after everything is swapped out. |
---|
2283 | for id in fed_exp.get('experimentID', []): |
---|
2284 | if 'fedid' in id: |
---|
2285 | ids.append(id['fedid']) |
---|
2286 | repo = "%s" % id['fedid'] |
---|
2287 | if 'localname' in id: ids.append(id['localname']) |
---|
2288 | |
---|
2289 | # Get the experimentAccess - the principal for this experiment. It |
---|
2290 | # is this principal to which credentials have been delegated, and |
---|
2291 | # as which the experiment controller must act. |
---|
2292 | if 'experimentAccess' in fed_exp and \ |
---|
2293 | 'X509' in fed_exp['experimentAccess']: |
---|
2294 | expcert = fed_exp['experimentAccess']['X509'] |
---|
2295 | else: |
---|
2296 | expcert = None |
---|
2297 | |
---|
2298 | # Collect the allocation/segment ids into a dict keyed by the fedid |
---|
2299 | # of the allocation (or a monotonically increasing integer) that |
---|
2300 | # contains a tuple of uri, aid (which is a dict...) |
---|
2301 | for i, fed in enumerate(fed_exp.get('federant', [])): |
---|
2302 | try: |
---|
2303 | uri = fed['uri'] |
---|
2304 | aid = fed['allocID'] |
---|
2305 | k = fed['allocID'].get('fedid', i) |
---|
2306 | except KeyError, e: |
---|
2307 | continue |
---|
2308 | term_params[k] = (uri, aid) |
---|
2309 | # Change the experiment state |
---|
2310 | fed_exp['experimentStatus'] = 'terminating' |
---|
2311 | if self.state_filename: self.write_state() |
---|
2312 | self.state_lock.release() |
---|
2313 | |
---|
2314 | return ids, term_params, expcert, repo |
---|
2315 | |
---|
2316 | |
---|
2317 | def deallocate_resources(self, term_params, expcert, status, force, |
---|
2318 | dealloc_log): |
---|
2319 | tmpdir = None |
---|
2320 | # This try block makes sure the tempdir is cleared |
---|
2321 | try: |
---|
2322 | # If no expcert, try the deallocation as the experiment |
---|
2323 | # controller instance. |
---|
2324 | if expcert and self.auth_type != 'legacy': |
---|
2325 | try: |
---|
2326 | tmpdir = tempfile.mkdtemp(prefix="term-") |
---|
2327 | except EnvironmentError: |
---|
2328 | raise service_error(service_error.internal, |
---|
2329 | "Cannot create tmp dir") |
---|
2330 | cert_file = self.make_temp_certfile(expcert, tmpdir) |
---|
2331 | pw = None |
---|
2332 | else: |
---|
2333 | cert_file = self.cert_file |
---|
2334 | pw = self.cert_pwd |
---|
2335 | |
---|
2336 | # Stop everyone. NB, wait_for_all waits until a thread starts |
---|
2337 | # and then completes, so we can't wait if nothing starts. So, |
---|
2338 | # no tbparams, no start. |
---|
2339 | if len(term_params) > 0: |
---|
2340 | tp = thread_pool(self.nthreads) |
---|
2341 | for k, (uri, aid) in term_params.items(): |
---|
2342 | # Create and start a thread to stop the segment |
---|
2343 | tp.wait_for_slot() |
---|
2344 | t = pooled_thread(\ |
---|
2345 | target=self.terminate_segment(log=dealloc_log, |
---|
2346 | testbed=uri, |
---|
2347 | cert_file=cert_file, |
---|
2348 | cert_pwd=pw, |
---|
2349 | trusted_certs=self.trusted_certs, |
---|
2350 | caller=self.call_TerminateSegment), |
---|
2351 | args=(uri, aid), name=k, |
---|
2352 | pdata=tp, trace_file=self.trace_file) |
---|
2353 | t.start() |
---|
2354 | # Wait for completions |
---|
2355 | tp.wait_for_all_done() |
---|
2356 | |
---|
2357 | # release the allocations (failed experiments have done this |
---|
2358 | # already, and starting experiments may be in odd states, so we |
---|
2359 | # ignore errors releasing those allocations |
---|
2360 | try: |
---|
2361 | for k, (uri, aid) in term_params.items(): |
---|
2362 | self.release_access(None, aid, uri=uri, |
---|
2363 | cert_file=cert_file, cert_pwd=pw) |
---|
2364 | except service_error, e: |
---|
2365 | if status != 'failed' and not force: |
---|
2366 | raise e |
---|
2367 | |
---|
2368 | # Clean up the tmpdir no matter what |
---|
2369 | finally: |
---|
2370 | if tmpdir: self.remove_dirs(tmpdir) |
---|
2371 | |
---|
2372 | def terminate_experiment(self, req, fid): |
---|
2373 | """ |
---|
2374 | Swap this experiment out on the federants and delete the shared |
---|
2375 | information |
---|
2376 | """ |
---|
2377 | tbparams = { } |
---|
2378 | req = req.get('TerminateRequestBody', None) |
---|
2379 | if not req: |
---|
2380 | raise service_error(service_error.req, |
---|
2381 | "Bad request format (no TerminateRequestBody)") |
---|
2382 | |
---|
2383 | key = self.get_experiment_key(req, 'experiment') |
---|
2384 | proof = self.check_experiment_access(fid, key) |
---|
2385 | exp = req.get('experiment', False) |
---|
2386 | force = req.get('force', False) |
---|
2387 | |
---|
2388 | dealloc_list = [ ] |
---|
2389 | |
---|
2390 | |
---|
2391 | # Create a logger that logs to the dealloc_list as well as to the main |
---|
2392 | # log file. |
---|
2393 | dealloc_log = logging.getLogger('fedd.experiment_control.%s' % key) |
---|
2394 | h = logging.StreamHandler(self.list_log(dealloc_list)) |
---|
2395 | # XXX: there should be a global one of these rather than repeating the |
---|
2396 | # code. |
---|
2397 | h.setFormatter(logging.Formatter("%(asctime)s %(name)s %(message)s", |
---|
2398 | '%d %b %y %H:%M:%S')) |
---|
2399 | dealloc_log.addHandler(h) |
---|
2400 | |
---|
2401 | self.state_lock.acquire() |
---|
2402 | fed_exp = self.state.get(key, None) |
---|
2403 | self.state_lock.release() |
---|
2404 | repo = None |
---|
2405 | |
---|
2406 | if fed_exp: |
---|
2407 | status = self.check_termination_status(fed_exp, force) |
---|
2408 | ids, term_params, expcert, repo = self.get_termination_info(fed_exp) |
---|
2409 | self.deallocate_resources(term_params, expcert, status, force, |
---|
2410 | dealloc_log) |
---|
2411 | |
---|
2412 | # Remove the terminated experiment |
---|
2413 | self.state_lock.acquire() |
---|
2414 | for id in ids: |
---|
2415 | self.clear_experiment_authorization(id, need_state_lock=False) |
---|
2416 | if id in self.state: del self.state[id] |
---|
2417 | |
---|
2418 | if self.state_filename: self.write_state() |
---|
2419 | self.state_lock.release() |
---|
2420 | |
---|
2421 | # Delete any synch points associated with this experiment. All |
---|
2422 | # synch points begin with the fedid of the experiment. |
---|
2423 | fedid_keys = set(["fedid:%s" % f for f in ids \ |
---|
2424 | if isinstance(f, fedid)]) |
---|
2425 | for k in self.synch_store.all_keys(): |
---|
2426 | try: |
---|
2427 | if len(k) > 45 and k[0:46] in fedid_keys: |
---|
2428 | self.synch_store.del_value(k) |
---|
2429 | except synch_store.BadDeletionError: |
---|
2430 | pass |
---|
2431 | self.write_store() |
---|
2432 | |
---|
2433 | # Remove software and other cached stuff from the filesystem. |
---|
2434 | if repo: |
---|
2435 | self.remove_dirs("%s/%s" % (self.repodir, repo)) |
---|
2436 | |
---|
2437 | return { |
---|
2438 | 'experiment': exp , |
---|
2439 | 'deallocationLog': string.join(dealloc_list, ''), |
---|
2440 | 'proof': [proof.to_dict()], |
---|
2441 | } |
---|
2442 | else: |
---|
2443 | raise service_error(service_error.req, "No saved state") |
---|
2444 | |
---|
2445 | |
---|
2446 | def GetValue(self, req, fid): |
---|
2447 | """ |
---|
2448 | Get a value from the synchronized store |
---|
2449 | """ |
---|
2450 | req = req.get('GetValueRequestBody', None) |
---|
2451 | if not req: |
---|
2452 | raise service_error(service_error.req, |
---|
2453 | "Bad request format (no GetValueRequestBody)") |
---|
2454 | |
---|
2455 | name = req.get('name', None) |
---|
2456 | wait = req.get('wait', False) |
---|
2457 | rv = { 'name': name } |
---|
2458 | |
---|
2459 | if not name: |
---|
2460 | raise service_error(service_error.req, "No name?") |
---|
2461 | |
---|
2462 | access_ok, proof = self.auth.check_attribute(fid, name, with_proof=True) |
---|
2463 | |
---|
2464 | if access_ok: |
---|
2465 | self.log.debug("[GetValue] asking for %s " % name) |
---|
2466 | try: |
---|
2467 | v = self.synch_store.get_value(name, wait) |
---|
2468 | except synch_store.RevokedKeyError: |
---|
2469 | # No more synch on this key |
---|
2470 | raise service_error(service_error.federant, |
---|
2471 | "Synch key %s revoked" % name) |
---|
2472 | if v is not None: |
---|
2473 | rv['value'] = v |
---|
2474 | rv['proof'] = proof.to_dict() |
---|
2475 | self.log.debug("[GetValue] got %s from %s" % (v, name)) |
---|
2476 | return rv |
---|
2477 | else: |
---|
2478 | raise service_error(service_error.access, "Access Denied", |
---|
2479 | proof=proof) |
---|
2480 | |
---|
2481 | |
---|
2482 | def SetValue(self, req, fid): |
---|
2483 | """ |
---|
2484 | Set a value in the synchronized store |
---|
2485 | """ |
---|
2486 | req = req.get('SetValueRequestBody', None) |
---|
2487 | if not req: |
---|
2488 | raise service_error(service_error.req, |
---|
2489 | "Bad request format (no SetValueRequestBody)") |
---|
2490 | |
---|
2491 | name = req.get('name', None) |
---|
2492 | v = req.get('value', '') |
---|
2493 | |
---|
2494 | if not name: |
---|
2495 | raise service_error(service_error.req, "No name?") |
---|
2496 | |
---|
2497 | access_ok, proof = self.auth.check_attribute(fid, name, with_proof=True) |
---|
2498 | |
---|
2499 | if access_ok: |
---|
2500 | try: |
---|
2501 | self.synch_store.set_value(name, v) |
---|
2502 | self.write_store() |
---|
2503 | self.log.debug("[SetValue] set %s to %s" % (name, v)) |
---|
2504 | except synch_store.CollisionError: |
---|
2505 | # Translate into a service_error |
---|
2506 | raise service_error(service_error.req, |
---|
2507 | "Value already set: %s" %name) |
---|
2508 | except synch_store.RevokedKeyError: |
---|
2509 | # No more synch on this key |
---|
2510 | raise service_error(service_error.federant, |
---|
2511 | "Synch key %s revoked" % name) |
---|
2512 | return { 'name': name, 'value': v, 'proof': proof.to_dict() } |
---|
2513 | else: |
---|
2514 | raise service_error(service_error.access, "Access Denied", |
---|
2515 | proof=proof) |
---|