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