[23dec62] | 1 | #!/usr/local/bin/python |
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| 2 | |
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| 3 | import os,sys |
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| 4 | import re |
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| 5 | import string |
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| 6 | import copy |
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| 7 | import pickle |
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| 8 | import logging |
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| 9 | import time |
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| 10 | |
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| 11 | from threading import * |
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| 12 | from subprocess import Popen, call, PIPE, STDOUT |
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| 13 | |
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| 14 | from util import * |
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| 15 | from allocate_project import allocate_project_local, allocate_project_remote |
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| 16 | from access_project import access_project |
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| 17 | from fedid import fedid, generate_fedid |
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| 18 | from authorizer import authorizer |
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| 19 | from service_error import service_error |
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| 20 | from remote_service import xmlrpc_handler, soap_handler, service_caller |
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| 21 | |
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| 22 | import httplib |
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| 23 | import tempfile |
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| 24 | from urlparse import urlparse |
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| 25 | |
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| 26 | import topdl |
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| 27 | import list_log |
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| 28 | import proxy_emulab_segment |
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| 29 | import local_emulab_segment |
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| 30 | |
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| 31 | |
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| 32 | # Make log messages disappear if noone configures a fedd logger |
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| 33 | class nullHandler(logging.Handler): |
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| 34 | def emit(self, record): pass |
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| 35 | |
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| 36 | fl = logging.getLogger("fedd.access") |
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| 37 | fl.addHandler(nullHandler()) |
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| 38 | |
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| 39 | class access: |
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| 40 | """ |
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| 41 | The implementation of access control based on mapping users to projects. |
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| 42 | |
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| 43 | Users can be mapped to existing projects or have projects created |
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| 44 | dynamically. This implements both direct requests and proxies. |
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| 45 | """ |
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| 46 | |
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| 47 | class parse_error(RuntimeError): pass |
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| 48 | |
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| 49 | |
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| 50 | proxy_RequestAccess= service_caller('RequestAccess') |
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| 51 | proxy_ReleaseAccess= service_caller('ReleaseAccess') |
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| 52 | |
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| 53 | def __init__(self, config=None, auth=None): |
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| 54 | """ |
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| 55 | Initializer. Pulls parameters out of the ConfigParser's access section. |
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| 56 | """ |
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| 57 | |
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| 58 | # Make sure that the configuration is in place |
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| 59 | if not config: |
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| 60 | raise RunTimeError("No config to dragon_access.access") |
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| 61 | |
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| 62 | self.project_priority = config.getboolean("access", "project_priority") |
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| 63 | self.allow_proxy = False |
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| 64 | self.certdir = config.get("access","certdir") |
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| 65 | self.create_debug = config.getboolean("access", "create_debug") |
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| 66 | self.cli_dir = config.get("access", "cli_dir") |
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| 67 | self.axis2_home = config.get("access", "axis2_home") |
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| 68 | self.idc_url = config.get("access", "idc") |
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[36fec1b] | 69 | self.domain = config.get("access", "domain") |
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[23dec62] | 70 | |
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| 71 | self.attrs = { } |
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| 72 | self.access = { } |
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| 73 | # State is a dict of dicts indexed by segment fedid that includes the |
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| 74 | # owners of the segment as fedids (who can manipulate it, key: owners), |
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| 75 | # the repo dir/user for the allocation (key: user), Current allocation |
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| 76 | # log (key: log), and GRI of the reservation once made (key: gri) |
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| 77 | self.state = { } |
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| 78 | self.log = logging.getLogger("fedd.access") |
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| 79 | set_log_level(config, "access", self.log) |
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| 80 | self.state_lock = Lock() |
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| 81 | if not (self.cli_dir and self.axis2_home and self.idc_url): |
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| 82 | self.log.error("Must specify all of cli_dir, axis2_home, " +\ |
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| 83 | "idc in the [access] section of the configuration") |
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| 84 | |
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| 85 | if auth: self.auth = auth |
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| 86 | else: |
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| 87 | self.log.error(\ |
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| 88 | "[access]: No authorizer initialized, creating local one.") |
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| 89 | auth = authorizer() |
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| 90 | |
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| 91 | tb = config.get('access', 'testbed') |
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| 92 | if tb: self.testbed = [ t.strip() for t in tb.split(',') ] |
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| 93 | else: self.testbed = [ ] |
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| 94 | |
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| 95 | if config.has_option("access", "accessdb"): |
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| 96 | self.read_access(config.get("access", "accessdb")) |
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| 97 | |
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| 98 | self.state_filename = config.get("access", "access_state") |
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| 99 | self.read_state() |
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| 100 | |
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| 101 | # Keep cert_file and cert_pwd coming from the same place |
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| 102 | self.cert_file = config.get("access", "cert_file") |
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| 103 | if self.cert_file: |
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| 104 | self.sert_pwd = config.get("access", "cert_pw") |
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| 105 | else: |
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| 106 | self.cert_file = config.get("globals", "cert_file") |
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| 107 | self.sert_pwd = config.get("globals", "cert_pw") |
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| 108 | |
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| 109 | self.trusted_certs = config.get("access", "trusted_certs") or \ |
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| 110 | config.get("globals", "trusted_certs") |
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| 111 | |
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| 112 | self.soap_services = {\ |
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| 113 | 'RequestAccess': soap_handler("RequestAccess", self.RequestAccess), |
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| 114 | 'ReleaseAccess': soap_handler("ReleaseAccess", self.ReleaseAccess), |
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| 115 | 'StartSegment': soap_handler("StartSegment", self.StartSegment), |
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| 116 | 'TerminateSegment': soap_handler("TerminateSegment", |
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| 117 | self.TerminateSegment), |
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| 118 | } |
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| 119 | self.xmlrpc_services = {\ |
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| 120 | 'RequestAccess': xmlrpc_handler('RequestAccess', |
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| 121 | self.RequestAccess), |
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| 122 | 'ReleaseAccess': xmlrpc_handler('ReleaseAccess', |
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| 123 | self.ReleaseAccess), |
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| 124 | 'StartSegment': xmlrpc_handler("StartSegment", self.StartSegment), |
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| 125 | 'TerminateSegment': xmlrpc_handler('TerminateSegment', |
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| 126 | self.TerminateSegment), |
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| 127 | } |
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| 128 | |
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| 129 | def read_access(self, config): |
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| 130 | """ |
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| 131 | Read a configuration file and set internal parameters. |
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| 132 | |
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| 133 | There are access lines of the |
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| 134 | form (tb, proj, user) -> user that map the first tuple of |
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| 135 | names to the user for for access purposes. Names in the key (left side) |
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| 136 | can include "<NONE> or <ANY>" to act as wildcards or to require the |
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| 137 | fields to be empty. Similarly aproj or auser can be <SAME> or |
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| 138 | <DYNAMIC> indicating that either the matching key is to be used or a |
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| 139 | dynamic user or project will be created. These names can also be |
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| 140 | federated IDs (fedid's) if prefixed with fedid:. The user is the repo |
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| 141 | directory that contains the DRAGON user credentials. |
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| 142 | Testbed attributes outside the forms above can be given using the |
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| 143 | format attribute: name value: value. The name is a single word and the |
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| 144 | value continues to the end of the line. Empty lines and lines startin |
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| 145 | with a # are ignored. |
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| 146 | |
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| 147 | Parsing errors result in a self.parse_error exception being raised. |
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| 148 | """ |
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| 149 | lineno=0 |
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| 150 | name_expr = "["+string.ascii_letters + string.digits + "\.\-_]+" |
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| 151 | fedid_expr = "fedid:[" + string.hexdigits + "]+" |
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| 152 | key_name = "(<ANY>|<NONE>|"+fedid_expr + "|"+ name_expr + ")" |
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| 153 | |
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| 154 | attr_re = re.compile('attribute:\s*([\._\-a-z0-9]+)\s+value:\s*(.*)', |
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| 155 | re.IGNORECASE) |
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| 156 | access_re = re.compile('\('+key_name+'\s*,\s*'+key_name+'\s*,\s*'+ |
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| 157 | key_name+'\s*\)\s*->\s*\(('+name_expr +')\s*\)', re.IGNORECASE) |
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| 158 | |
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| 159 | def parse_name(n): |
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| 160 | if n.startswith('fedid:'): return fedid(hexstr=n[len('fedid:'):]) |
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| 161 | else: return n |
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| 162 | |
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| 163 | def auth_name(n): |
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| 164 | if isinstance(n, basestring): |
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| 165 | if n =='<any>' or n =='<none>': return None |
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| 166 | else: return unicode(n) |
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| 167 | else: |
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| 168 | return n |
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| 169 | |
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| 170 | f = open(config, "r"); |
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| 171 | for line in f: |
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| 172 | lineno += 1 |
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| 173 | line = line.strip(); |
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| 174 | if len(line) == 0 or line.startswith('#'): |
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| 175 | continue |
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| 176 | |
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| 177 | # Extended (attribute: x value: y) attribute line |
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| 178 | m = attr_re.match(line) |
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| 179 | if m != None: |
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| 180 | attr, val = m.group(1,2) |
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| 181 | self.attrs[attr] = val |
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| 182 | continue |
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| 183 | |
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| 184 | # Access line (t, p, u) -> (a) line |
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| 185 | # XXX: you are here |
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| 186 | m = access_re.match(line) |
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| 187 | if m != None: |
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| 188 | access_key = tuple([ parse_name(x) for x in m.group(1,2,3)]) |
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| 189 | auth_key = tuple([ auth_name(x) for x in access_key]) |
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| 190 | user_name = auth_name(parse_name(m.group(4))) |
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| 191 | |
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| 192 | self.access[access_key] = user_name |
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| 193 | self.auth.set_attribute(auth_key, "access") |
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| 194 | continue |
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| 195 | |
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| 196 | # Nothing matched to here: unknown line - raise exception |
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| 197 | f.close() |
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| 198 | raise self.parse_error("Unknown statement at line %d of %s" % \ |
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| 199 | (lineno, config)) |
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| 200 | f.close() |
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| 201 | |
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| 202 | def get_users(self, obj): |
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| 203 | """ |
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| 204 | Return a list of the IDs of the users in dict |
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| 205 | """ |
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| 206 | if obj.has_key('user'): |
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| 207 | return [ unpack_id(u['userID']) \ |
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| 208 | for u in obj['user'] if u.has_key('userID') ] |
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| 209 | else: |
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| 210 | return None |
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| 211 | |
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| 212 | def write_state(self): |
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| 213 | if self.state_filename: |
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| 214 | try: |
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| 215 | f = open(self.state_filename, 'w') |
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| 216 | pickle.dump(self.state, f) |
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| 217 | except IOError, e: |
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| 218 | self.log.error("Can't write file %s: %s" % \ |
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| 219 | (self.state_filename, e)) |
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| 220 | except pickle.PicklingError, e: |
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| 221 | self.log.error("Pickling problem: %s" % e) |
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| 222 | except TypeError, e: |
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| 223 | self.log.error("Pickling problem (TypeError): %s" % e) |
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| 224 | |
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| 225 | |
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| 226 | def read_state(self): |
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| 227 | """ |
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| 228 | Read a new copy of access state. Old state is overwritten. |
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| 229 | |
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| 230 | State format is a simple pickling of the state dictionary. |
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| 231 | """ |
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| 232 | if self.state_filename: |
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| 233 | try: |
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| 234 | f = open(self.state_filename, "r") |
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| 235 | self.state = pickle.load(f) |
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| 236 | self.log.debug("[read_state]: Read state from %s" % \ |
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| 237 | self.state_filename) |
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| 238 | except IOError, e: |
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| 239 | self.log.warning(("[read_state]: No saved state: " +\ |
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| 240 | "Can't open %s: %s") % (self.state_filename, e)) |
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| 241 | except EOFError, e: |
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| 242 | self.log.warning(("[read_state]: " +\ |
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| 243 | "Empty or damaged state file: %s:") % \ |
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| 244 | self.state_filename) |
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| 245 | except pickle.UnpicklingError, e: |
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| 246 | self.log.warning(("[read_state]: No saved state: " + \ |
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| 247 | "Unpickling failed: %s") % e) |
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| 248 | |
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| 249 | # Add the ownership attributes to the authorizer. Note that the |
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| 250 | # indices of the allocation dict are strings, but the attributes are |
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| 251 | # fedids, so there is a conversion. |
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| 252 | for k in self.state.keys(): |
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| 253 | for o in self.state[k].get('owners', []): |
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| 254 | self.auth.set_attribute(o, fedid(hexstr=k)) |
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| 255 | self.auth.set_attribute(fedid(hexstr=k),fedid(hexstr=k)) |
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| 256 | |
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| 257 | |
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| 258 | def permute_wildcards(self, a, p): |
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| 259 | """Return a copy of a with various fields wildcarded. |
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| 260 | |
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| 261 | The bits of p control the wildcards. A set bit is a wildcard |
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| 262 | replacement with the lowest bit being user then project then testbed. |
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| 263 | """ |
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| 264 | if p & 1: user = ["<any>"] |
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| 265 | else: user = a[2] |
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| 266 | if p & 2: proj = "<any>" |
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| 267 | else: proj = a[1] |
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| 268 | if p & 4: tb = "<any>" |
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| 269 | else: tb = a[0] |
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| 270 | |
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| 271 | return (tb, proj, user) |
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| 272 | |
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| 273 | def find_access(self, search): |
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| 274 | """ |
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| 275 | Search the access DB for a match on this tuple. Return the matching |
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| 276 | user (repo dir). |
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| 277 | |
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| 278 | NB, if the initial tuple fails to match we start inserting wildcards in |
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| 279 | an order determined by self.project_priority. Try the list of users in |
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| 280 | order (when wildcarded, there's only one user in the list). |
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| 281 | """ |
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| 282 | if self.project_priority: perm = (0, 1, 2, 3, 4, 5, 6, 7) |
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| 283 | else: perm = (0, 2, 1, 3, 4, 6, 5, 7) |
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| 284 | |
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| 285 | for p in perm: |
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| 286 | s = self.permute_wildcards(search, p) |
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| 287 | # s[2] is None on an anonymous, unwildcarded request |
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| 288 | if s[2] != None: |
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| 289 | for u in s[2]: |
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| 290 | if self.access.has_key((s[0], s[1], u)): |
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| 291 | return self.access[(s[0], s[1], u)] |
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| 292 | else: |
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| 293 | if self.access.has_key(s): |
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| 294 | return self.access[s] |
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| 295 | return None |
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| 296 | |
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| 297 | def lookup_access(self, req, fid): |
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| 298 | """ |
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| 299 | Determine the allowed access for this request. Return the access and |
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| 300 | which fields are dynamic. |
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| 301 | |
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| 302 | The fedid is needed to construct the request |
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| 303 | """ |
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| 304 | # Search keys |
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| 305 | tb = None |
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| 306 | project = None |
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| 307 | user = None |
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| 308 | # Return values |
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| 309 | rp = access_project(None, ()) |
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| 310 | ru = None |
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| 311 | |
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| 312 | if req.has_key('project'): |
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| 313 | p = req['project'] |
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| 314 | if p.has_key('name'): |
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| 315 | project = unpack_id(p['name']) |
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| 316 | user = self.get_users(p) |
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| 317 | else: |
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| 318 | user = self.get_users(req) |
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| 319 | |
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| 320 | user_fedids = [ u for u in user if isinstance(u, fedid)] |
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| 321 | # Determine how the caller is representing itself. If its fedid shows |
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| 322 | # up as a project or a singleton user, let that stand. If neither the |
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| 323 | # usernames nor the project name is a fedid, the caller is a testbed. |
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| 324 | if project and isinstance(project, fedid): |
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| 325 | if project == fid: |
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| 326 | # The caller is the project (which is already in the tuple |
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| 327 | # passed in to the authorizer) |
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| 328 | owners = user_fedids |
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| 329 | owners.append(project) |
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| 330 | else: |
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| 331 | raise service_error(service_error.req, |
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| 332 | "Project asserting different fedid") |
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| 333 | else: |
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| 334 | if fid not in user_fedids: |
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| 335 | tb = fid |
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| 336 | owners = user_fedids |
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| 337 | owners.append(fid) |
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| 338 | else: |
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| 339 | if len(fedids) > 1: |
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| 340 | raise service_error(service_error.req, |
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| 341 | "User asserting different fedid") |
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| 342 | else: |
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| 343 | # Which is a singleton |
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| 344 | owners = user_fedids |
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| 345 | # Confirm authorization |
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| 346 | |
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| 347 | for u in user: |
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| 348 | self.log.debug("[lookup_access] Checking access for %s" % \ |
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| 349 | ((tb, project, u),)) |
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| 350 | if self.auth.check_attribute((tb, project, u), 'access'): |
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| 351 | self.log.debug("[lookup_access] Access granted") |
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| 352 | break |
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| 353 | else: |
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| 354 | self.log.debug("[lookup_access] Access Denied") |
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| 355 | else: |
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| 356 | raise service_error(service_error.access, "Access denied") |
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| 357 | |
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| 358 | # This maps a valid user to the Emulab projects and users to use |
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| 359 | found = self.find_access((tb, project, user)) |
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| 360 | |
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| 361 | if found == None: |
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| 362 | raise service_error(service_error.access, |
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| 363 | "Access denied - cannot map access") |
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| 364 | return found, owners |
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| 365 | |
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| 366 | def RequestAccess(self, req, fid): |
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| 367 | """ |
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| 368 | Handle the access request. Proxy if not for us. |
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| 369 | |
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| 370 | Parse out the fields and make the allocations or rejections if for us, |
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| 371 | otherwise, assuming we're willing to proxy, proxy the request out. |
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| 372 | """ |
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| 373 | |
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| 374 | # The dance to get into the request body |
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| 375 | if req.has_key('RequestAccessRequestBody'): |
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| 376 | req = req['RequestAccessRequestBody'] |
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| 377 | else: |
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| 378 | raise service_error(service_error.req, "No request!?") |
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| 379 | |
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| 380 | if req.has_key('destinationTestbed'): |
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| 381 | dt = unpack_id(req['destinationTestbed']) |
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| 382 | |
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| 383 | if dt == None or dt in self.testbed: |
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| 384 | # Request for this fedd |
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| 385 | found, owners = self.lookup_access(req, fid) |
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| 386 | # keep track of what's been added |
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| 387 | allocID, alloc_cert = generate_fedid(subj="alloc", log=self.log) |
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| 388 | aid = unicode(allocID) |
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| 389 | |
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| 390 | self.state_lock.acquire() |
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| 391 | self.state[aid] = { } |
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| 392 | self.state[aid]['user'] = found |
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| 393 | self.state[aid]['owners'] = owners |
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| 394 | self.write_state() |
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| 395 | self.state_lock.release() |
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| 396 | for o in owners: |
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| 397 | self.auth.set_attribute(o, allocID) |
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| 398 | self.auth.set_attribute(allocID, allocID) |
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| 399 | |
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| 400 | try: |
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| 401 | f = open("%s/%s.pem" % (self.certdir, aid), "w") |
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| 402 | print >>f, alloc_cert |
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| 403 | f.close() |
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| 404 | except IOError, e: |
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| 405 | raise service_error(service_error.internal, |
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| 406 | "Can't open %s/%s : %s" % (self.certdir, aid, e)) |
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| 407 | return { 'allocID': { 'fedid': allocID } } |
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| 408 | else: |
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| 409 | if self.allow_proxy: |
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| 410 | resp = self.proxy_RequestAccess.call_service(dt, req, |
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| 411 | self.cert_file, self.cert_pwd, |
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| 412 | self.trusted_certs) |
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| 413 | if resp.has_key('RequestAccessResponseBody'): |
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| 414 | return resp['RequestAccessResponseBody'] |
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| 415 | else: |
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| 416 | return None |
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| 417 | else: |
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| 418 | raise service_error(service_error.access, |
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| 419 | "Access proxying denied") |
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| 420 | |
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| 421 | def ReleaseAccess(self, req, fid): |
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| 422 | # The dance to get into the request body |
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| 423 | if req.has_key('ReleaseAccessRequestBody'): |
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| 424 | req = req['ReleaseAccessRequestBody'] |
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| 425 | else: |
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| 426 | raise service_error(service_error.req, "No request!?") |
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| 427 | |
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| 428 | if req.has_key('destinationTestbed'): |
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| 429 | dt = unpack_id(req['destinationTestbed']) |
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| 430 | else: |
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| 431 | dt = None |
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| 432 | |
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| 433 | if dt == None or dt in self.testbed: |
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| 434 | # Local request |
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| 435 | try: |
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| 436 | if req['allocID'].has_key('localname'): |
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| 437 | auth_attr = aid = req['allocID']['localname'] |
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| 438 | elif req['allocID'].has_key('fedid'): |
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| 439 | aid = unicode(req['allocID']['fedid']) |
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| 440 | auth_attr = req['allocID']['fedid'] |
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| 441 | else: |
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| 442 | raise service_error(service_error.req, |
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| 443 | "Only localnames and fedids are understood") |
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| 444 | except KeyError: |
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| 445 | raise service_error(service_error.req, "Badly formed request") |
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| 446 | |
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| 447 | self.log.debug("[access] deallocation requested for %s", aid) |
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| 448 | if not self.auth.check_attribute(fid, auth_attr): |
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| 449 | self.log.debug("[access] deallocation denied for %s", aid) |
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| 450 | raise service_error(service_error.access, "Access Denied") |
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| 451 | |
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| 452 | self.state_lock.acquire() |
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| 453 | if self.state.has_key(aid): |
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| 454 | self.log.debug("Found allocation for %s" %aid) |
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| 455 | del self.state[aid] |
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| 456 | self.write_state() |
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| 457 | self.state_lock.release() |
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| 458 | # And remove the access cert |
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| 459 | cf = "%s/%s.pem" % (self.certdir, aid) |
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| 460 | self.log.debug("Removing %s" % cf) |
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| 461 | os.remove(cf) |
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| 462 | return { 'allocID': req['allocID'] } |
---|
| 463 | else: |
---|
| 464 | self.state_lock.release() |
---|
| 465 | raise service_error(service_error.req, "No such allocation") |
---|
| 466 | |
---|
| 467 | else: |
---|
| 468 | if self.allow_proxy: |
---|
| 469 | resp = self.proxy_ReleaseAccess.call_service(dt, req, |
---|
| 470 | self.cert_file, self.cert_pwd, |
---|
| 471 | self.trusted_certs) |
---|
| 472 | if resp.has_key('ReleaseAccessResponseBody'): |
---|
| 473 | return resp['ReleaseAccessResponseBody'] |
---|
| 474 | else: |
---|
| 475 | return None |
---|
| 476 | else: |
---|
| 477 | raise service_error(service_error.access, |
---|
| 478 | "Access proxying denied") |
---|
| 479 | |
---|
| 480 | def extract_parameters(self, top): |
---|
| 481 | """ |
---|
| 482 | DRAGON currently supports a fixed capacity link between two endpoints. |
---|
| 483 | Those endpoints may specify a VPN (or list or range) to use. This |
---|
| 484 | extracts the DRAGON endpoints and vpn preferences from the segments (as |
---|
| 485 | attributes) and the capacity of the connection as given by the |
---|
| 486 | substrate. The two endpoints VLAN choices are intersected to get set |
---|
| 487 | of VLANs that are acceptable (no VLAN requiremnets means any is |
---|
| 488 | acceptable). |
---|
| 489 | """ |
---|
| 490 | segments = filter(lambda x: isinstance(x, topdl.Segment), top.elements) |
---|
| 491 | |
---|
| 492 | if len(segments) != 2 or len(top.substrates) != 1: |
---|
| 493 | raise service_error(service_error.req, |
---|
| 494 | "Requests to DRAGON must have exactlty two segments " +\ |
---|
| 495 | "and one substrate") |
---|
| 496 | |
---|
| 497 | ends = [ ] |
---|
| 498 | for s in segments: |
---|
| 499 | ep = s.get_attribute('dragon_endpoint') |
---|
| 500 | if not ep: |
---|
| 501 | raise service_error(service_error.req, |
---|
[69692a9] | 502 | "Missing DRAGON endpoint for %s" % s.id) |
---|
[23dec62] | 503 | v = s.get_attribute('vlans') |
---|
| 504 | vlans = None |
---|
| 505 | vset = set() |
---|
| 506 | # the vlans can be a single integer, a comma separated list or a |
---|
| 507 | # comma separated lists of dashed ranges. E.g 100 or 100,300 or |
---|
| 508 | # 100,300-305,400 |
---|
| 509 | if v: |
---|
| 510 | if v.count(",") > 0 : |
---|
| 511 | vl = [ x.strip() for x in v.split(",") ] |
---|
| 512 | else: |
---|
| 513 | vl = [ v ] |
---|
| 514 | for v in vl: |
---|
| 515 | try: |
---|
| 516 | if v.count("-")> 0: |
---|
| 517 | f, t = v.split("-", 1) |
---|
| 518 | for i in range(int(f), int(t)+1): |
---|
| 519 | vset.add(i) |
---|
| 520 | else: |
---|
| 521 | vset.add(int(v)) |
---|
| 522 | except ValueError: |
---|
| 523 | raise service_error(service_error.req, |
---|
| 524 | "VLAN tags must be integers (%s)" %s.name) |
---|
| 525 | if len(vset) > 0: |
---|
| 526 | if vlans: vlans &= vest |
---|
| 527 | else: vlans = vset |
---|
| 528 | ends.append(ep) |
---|
| 529 | |
---|
| 530 | |
---|
| 531 | sub = top.substrates[0] |
---|
| 532 | if sub.capacity: |
---|
| 533 | cap = int(sub.capacity.rate / 1000.0) |
---|
| 534 | if cap < 1: cap = 1 |
---|
| 535 | else: |
---|
| 536 | cap = 100 |
---|
| 537 | |
---|
[36fec1b] | 538 | |
---|
| 539 | # DRAGON's command line tool barfs if the source (ends[0]) is not in |
---|
| 540 | # the domain controlled by the IDC. This code ensures this situation. |
---|
| 541 | if self.domain and not ends[0].endswith(self.domain): |
---|
| 542 | hold = ends[0] |
---|
| 543 | for i, e in enumerate(ends): |
---|
| 544 | if i == 0: continue |
---|
| 545 | if e.endswith(self.domain): |
---|
| 546 | ends[0] = e |
---|
| 547 | ends[i] = hold |
---|
| 548 | break |
---|
| 549 | else: |
---|
| 550 | raise service_error(service_error.req, |
---|
| 551 | "No endpoint in my domain") |
---|
| 552 | |
---|
| 553 | |
---|
[23dec62] | 554 | return cap, ends[0], ends[1], vlans |
---|
| 555 | |
---|
| 556 | |
---|
| 557 | def start_segment(self, repo, fr, to, cap, vpns=[], start=None, end=None, |
---|
| 558 | log=None): |
---|
| 559 | """ |
---|
| 560 | Do the actual work of creating the dragon connecton. |
---|
| 561 | """ |
---|
| 562 | if not log: log = self.log |
---|
| 563 | gri_re = re.compile("GRI:\s*(.*)", re.IGNORECASE) |
---|
| 564 | status_re = re.compile("Status:\s*(.*)", re.IGNORECASE) |
---|
| 565 | source_re = re.compile("Source\s+Endpoint:\s*(.*)", re.IGNORECASE) |
---|
| 566 | dest_re = re.compile("Destination\s+Endpoint:\s*(.*)", re.IGNORECASE) |
---|
| 567 | path_re = re.compile("Path:") |
---|
| 568 | |
---|
| 569 | if not vpns: |
---|
| 570 | vpns = [ None, None, None, None, None] |
---|
| 571 | |
---|
| 572 | if not start: |
---|
| 573 | start = time.time() |
---|
| 574 | if not end: |
---|
[ab33158] | 575 | end = start + 120 *60 |
---|
[23dec62] | 576 | |
---|
| 577 | |
---|
| 578 | status = None |
---|
| 579 | gri = None |
---|
| 580 | rv = None |
---|
| 581 | vlan_no = None |
---|
| 582 | for v in vpns: |
---|
| 583 | cmd = ['env', 'AXIS2_HOME=%s' % self.axis2_home, './run.sh', |
---|
| 584 | 'createReservation', '-repo', repo , '-url', self.idc_url, |
---|
| 585 | '-l2source', fr, '-l2dest', to, '-bwidth', "%s" % cap, |
---|
| 586 | '-vlan', "%s" % v, '-desc', 'fedd created connection', |
---|
| 587 | '-pathsetup', 'timer-automatic', '-start', "%d" % int(start), |
---|
| 588 | '-end', "%d" % int(end)] |
---|
| 589 | log.debug("[start_segment]: %s" % " ".join(cmd)) |
---|
| 590 | if not self.create_debug: |
---|
| 591 | p = Popen(cmd, cwd=self.cli_dir, |
---|
| 592 | stdout=PIPE, stderr=STDOUT, |
---|
| 593 | close_fds=True) |
---|
| 594 | for line in p.stdout: |
---|
| 595 | m = status_re.match(line) |
---|
| 596 | if m: |
---|
| 597 | status = m.group(1) |
---|
| 598 | continue |
---|
| 599 | m = gri_re.match(line) |
---|
| 600 | if m: |
---|
| 601 | gri = m.group(1) |
---|
| 602 | rv = p.wait() |
---|
| 603 | else: |
---|
| 604 | rv = 0 |
---|
| 605 | status = 'ACCEPTED' |
---|
| 606 | gri = 'debug_gri' |
---|
| 607 | |
---|
| 608 | # Reservation in progress. Poll the IDC until we know the outcome |
---|
| 609 | cmd = ['env', 'AXIS2_HOME=%s' % self.axis2_home, './run.sh', |
---|
| 610 | 'query', '-repo', repo , '-url', self.idc_url, '-gri', gri] |
---|
| 611 | |
---|
[ab33158] | 612 | while status in ('ACCEPTED', 'INSETUP', 'INCREATE', 'PENDING'): |
---|
[23dec62] | 613 | log.debug("[start_segment]: %s" % " ".join(cmd)) |
---|
| 614 | if not self.create_debug: |
---|
| 615 | p = Popen(cmd, cwd=self.cli_dir, |
---|
| 616 | stdout=PIPE, stderr=STDOUT, |
---|
| 617 | close_fds=True) |
---|
| 618 | in_path = False |
---|
| 619 | vpn1 = None |
---|
| 620 | vpn2 = None |
---|
| 621 | src = None |
---|
| 622 | dest = None |
---|
| 623 | for line in p.stdout: |
---|
| 624 | if not in_path: |
---|
| 625 | m = status_re.match(line) |
---|
| 626 | if m: |
---|
| 627 | status = m.group(1) |
---|
| 628 | continue |
---|
| 629 | m = source_re.match(line) |
---|
| 630 | if m: |
---|
| 631 | src = m.group(1) |
---|
| 632 | continue |
---|
| 633 | m = dest_re.match(line) |
---|
| 634 | if m: |
---|
| 635 | dest = m.group(1) |
---|
| 636 | continue |
---|
| 637 | m = path_re.match(line) |
---|
| 638 | if m: |
---|
| 639 | in_path = True |
---|
| 640 | if src and dest: |
---|
| 641 | vpn1_re = re.compile( |
---|
| 642 | "\s*%s,\s*\w+\s*,\s*(\d+)" % \ |
---|
| 643 | src.replace("*", "\*")) |
---|
| 644 | vpn2_re = re.compile( |
---|
| 645 | "\s*%s,\s*\w+\s*,\s*(\d+)" % \ |
---|
| 646 | dest.replace("*", "\*")) |
---|
| 647 | else: |
---|
| 648 | raise service_error(service_error.internal, |
---|
| 649 | "Strange output from query") |
---|
| 650 | else: |
---|
| 651 | m = vpn1_re.match(line) |
---|
| 652 | if m: |
---|
| 653 | vpn1 = m.group(1) |
---|
| 654 | continue |
---|
| 655 | m = vpn2_re.match(line) |
---|
| 656 | if m: |
---|
| 657 | vpn2 = m.group(1) |
---|
| 658 | continue |
---|
| 659 | rv = p.wait() |
---|
| 660 | if vpn1 == vpn2: |
---|
| 661 | if v is not None: |
---|
| 662 | if int(vpn1) == v: |
---|
| 663 | vlan_no = int(v) |
---|
| 664 | else: |
---|
| 665 | raise service_error(service_error.federant, |
---|
| 666 | "Unexpected vlan assignment") |
---|
| 667 | else: |
---|
| 668 | vlan_no = int(v) |
---|
| 669 | else: |
---|
| 670 | raise service_error(service_error.internal, |
---|
| 671 | "Different VPNs on DRAGON ends") |
---|
[68bb551] | 672 | log.debug("Status: %s" % status or "none") |
---|
[23dec62] | 673 | else: |
---|
| 674 | status = 'ACTIVE' |
---|
| 675 | vlan_no = int(v) or 1 |
---|
[ab33158] | 676 | if status in ('ACCEPTED', 'INSETUP', 'INCREATE', 'PENDING'): |
---|
| 677 | time.sleep(45) |
---|
[23dec62] | 678 | if status in ('ACTIVE', 'FINISHED', 'CANCELLED'): |
---|
| 679 | break |
---|
| 680 | |
---|
| 681 | if (rv == 0 and gri and vlan_no and status == 'ACTIVE'): |
---|
| 682 | return gri, vlan_no |
---|
| 683 | else: |
---|
[69692a9] | 684 | raise service_error(service_error.federant, |
---|
| 685 | "Cannot make reservation") |
---|
[23dec62] | 686 | |
---|
| 687 | def stop_segment(self, repo, gri, log=None): |
---|
| 688 | if not log: log = self.log |
---|
| 689 | cmd = ['env', 'AXIS2_HOME=%s' % self.axis2_home, './run.sh', |
---|
| 690 | 'cancel', '-repo', repo , '-url', self.idc_url, '-gri', gri] |
---|
| 691 | |
---|
| 692 | |
---|
| 693 | self.log.debug("[stop_segment]: %s" % " ".join(cmd)) |
---|
| 694 | if not self.create_debug: |
---|
| 695 | try: |
---|
| 696 | f = open("/dev/null", "w") |
---|
| 697 | call(cmd, cwd=self.cli_dir, stdout=f, stderr=f, close_fds=True) |
---|
| 698 | f.close() |
---|
| 699 | except IOError, e: |
---|
| 700 | raise service_error(service_error.internal, |
---|
| 701 | "Failed to open /dev/null: %s" % e) |
---|
| 702 | |
---|
| 703 | def StartSegment(self, req, fid): |
---|
| 704 | err = None # Any service_error generated after tmpdir is created |
---|
| 705 | rv = None # Return value from segment creation |
---|
| 706 | |
---|
| 707 | try: |
---|
| 708 | req = req['StartSegmentRequestBody'] |
---|
| 709 | except KeyError: |
---|
| 710 | raise service_error(server_error.req, "Badly formed request") |
---|
| 711 | |
---|
| 712 | auth_attr = req['allocID']['fedid'] |
---|
| 713 | aid = "%s" % auth_attr |
---|
| 714 | attrs = req.get('fedAttr', []) |
---|
| 715 | if not self.auth.check_attribute(fid, auth_attr): |
---|
| 716 | raise service_error(service_error.access, "Access denied") |
---|
| 717 | |
---|
| 718 | if req.has_key('segmentdescription') and \ |
---|
| 719 | req['segmentdescription'].has_key('topdldescription'): |
---|
| 720 | topo = \ |
---|
| 721 | topdl.Topology(**req['segmentdescription']['topdldescription']) |
---|
| 722 | else: |
---|
| 723 | raise service_error(service_error.req, |
---|
| 724 | "Request missing segmentdescription'") |
---|
| 725 | |
---|
| 726 | cap, src, dest, vlans = self.extract_parameters(topo) |
---|
| 727 | ename = aid |
---|
| 728 | |
---|
| 729 | for a in attrs: |
---|
| 730 | if a['attribute'] == 'experiment_name': |
---|
| 731 | ename = a['value'] |
---|
| 732 | |
---|
| 733 | repo = None |
---|
| 734 | self.state_lock.acquire() |
---|
| 735 | if self.state.has_key(aid): |
---|
| 736 | repo = self.state[aid]['user'] |
---|
| 737 | self.state[aid]['log'] = [ ] |
---|
| 738 | # Create a logger that logs to the experiment's state object as |
---|
| 739 | # well as to the main log file. |
---|
| 740 | alloc_log = logging.getLogger('fedd.access.%s' % ename) |
---|
| 741 | h = logging.StreamHandler( |
---|
| 742 | list_log.list_log(self.state[aid]['log'])) |
---|
| 743 | # XXX: there should be a global one of these rather than |
---|
| 744 | # repeating the code. |
---|
| 745 | h.setFormatter(logging.Formatter( |
---|
| 746 | "%(asctime)s %(name)s %(message)s", |
---|
| 747 | '%d %b %y %H:%M:%S')) |
---|
| 748 | alloc_log.addHandler(h) |
---|
| 749 | self.write_state() |
---|
| 750 | self.state_lock.release() |
---|
| 751 | |
---|
| 752 | if not repo: |
---|
| 753 | raise service_error(service_error.internal, |
---|
| 754 | "Can't find creation user for %s" %aid) |
---|
| 755 | |
---|
[68bb551] | 756 | gri, vlan_no = self.start_segment(repo, src, dest, cap, vlans, |
---|
| 757 | log=alloc_log) |
---|
[23dec62] | 758 | |
---|
| 759 | if gri: |
---|
| 760 | # Grab the log (this is some anal locking, but better safe than |
---|
| 761 | # sorry) |
---|
| 762 | self.state_lock.acquire() |
---|
| 763 | self.state[aid]['gri'] = gri |
---|
| 764 | logv = "".join(self.state[aid]['log']) |
---|
| 765 | self.write_state() |
---|
| 766 | self.state_lock.release() |
---|
| 767 | |
---|
[68bb551] | 768 | return { |
---|
| 769 | 'allocID': req['allocID'], |
---|
| 770 | 'allocationLog': logv, |
---|
| 771 | 'fedAttr': [ |
---|
| 772 | {'attribute': 'vlan', 'value': '%d' % vlan_no } |
---|
| 773 | ] |
---|
| 774 | } |
---|
[23dec62] | 775 | elif err: |
---|
| 776 | raise service_error(service_error.federant, |
---|
| 777 | "Swapin failed: %s" % err) |
---|
| 778 | else: |
---|
| 779 | raise service_error(service_error.federant, "Swapin failed") |
---|
| 780 | |
---|
| 781 | def TerminateSegment(self, req, fid): |
---|
| 782 | try: |
---|
| 783 | req = req['TerminateSegmentRequestBody'] |
---|
| 784 | except KeyError: |
---|
| 785 | raise service_error(server_error.req, "Badly formed request") |
---|
| 786 | |
---|
| 787 | auth_attr = req['allocID']['fedid'] |
---|
| 788 | aid = "%s" % auth_attr |
---|
[ab33158] | 789 | |
---|
| 790 | self.log.debug("Terminate request for %s" %aid) |
---|
[23dec62] | 791 | attrs = req.get('fedAttr', []) |
---|
| 792 | if not self.auth.check_attribute(fid, auth_attr): |
---|
| 793 | raise service_error(service_error.access, "Access denied") |
---|
| 794 | |
---|
| 795 | self.state_lock.acquire() |
---|
| 796 | if self.state.has_key(aid): |
---|
| 797 | gri = self.state[aid].get('gri', None) |
---|
| 798 | user = self.state[aid].get('user', None) |
---|
| 799 | else: |
---|
| 800 | gri = None |
---|
| 801 | user = None |
---|
| 802 | self.state_lock.release() |
---|
[ab33158] | 803 | self.log.debug("Stop segment for user: %s gre %s" %(user, gri)) |
---|
[23dec62] | 804 | |
---|
| 805 | if not gri: |
---|
| 806 | raise service_error(service_error.internal, |
---|
| 807 | "Can't find gri for %s" % aid) |
---|
| 808 | |
---|
| 809 | if not user: |
---|
| 810 | raise service_error(service_error.internal, |
---|
| 811 | "Can't find creation user for %s" % aid) |
---|
[ab33158] | 812 | |
---|
| 813 | self.log.debug("Stop segment for GRI: %s" %gri) |
---|
[23dec62] | 814 | self.stop_segment(user, gri) |
---|
| 815 | return { 'allocID': req['allocID'] } |
---|