[c119839] | 1 | #!/usr/local/bin/python |
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| 2 | |
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| 3 | import sys, os |
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| 4 | import re |
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| 5 | |
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| 6 | import tempfile |
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| 7 | import subprocess |
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| 8 | import logging |
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| 9 | import time |
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| 10 | import random |
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| 11 | import string |
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| 12 | import signal |
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| 13 | |
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| 14 | import xml.parsers.expat |
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| 15 | from threading import Thread |
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| 16 | |
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| 17 | from proxy_segment import proxy_segment |
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| 18 | from service_error import service_error |
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| 19 | from remote_service import service_caller |
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| 20 | from util import fedd_ssl_context |
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| 21 | |
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| 22 | import topdl |
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| 23 | |
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| 24 | class segment_base(proxy_segment): |
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| 25 | class ProtoGENIError(Exception): |
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| 26 | def __init__(self, op, code, output): |
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| 27 | Exception.__init__(self, output) |
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| 28 | self.op = op |
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| 29 | self.code = code |
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| 30 | self.output = output |
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| 31 | |
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| 32 | def __init__(self, log=None, keyfile=None, debug=False, |
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| 33 | ch_url=None, sa_url=None, cm_url=None): |
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| 34 | proxy_segment.__init__(self, log=log, keyfile=keyfile, debug=debug) |
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| 35 | |
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| 36 | self.ProtoGENIError = start_segment.ProtoGENIError |
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| 37 | self.ch_url = ch_url |
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| 38 | self.sa_url = sa_url |
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| 39 | self.cm_url = cm_url |
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| 40 | |
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| 41 | self.call_SetValue = service_caller('SetValue') |
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| 42 | |
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| 43 | self.debug_fail = ['Resolve'] |
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| 44 | self.debug_response = { |
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| 45 | 'RedeemTicket': ("XML blob1", "XML blob2"), |
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| 46 | 'SliceStatus': { 'status': 'ready' }, |
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| 47 | } |
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| 48 | |
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| 49 | |
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| 50 | def pg_call(self, url, method, params, context): |
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| 51 | s = service_caller(method, request_body_name="", strict=False) |
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| 52 | self.log.debug("Calling %s %s" % (url, method)) |
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| 53 | if not self.debug: |
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| 54 | r = s.call_xmlrpc_service(url, params, context=context) |
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| 55 | if r.get('code', -1) != 0: |
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| 56 | raise self.ProtoGENIError(op=method, |
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| 57 | code=r.get('code', 'unknown'), |
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| 58 | output=r.get('output', 'No output')) |
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| 59 | else: |
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| 60 | return r.get('value', None) |
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| 61 | else: |
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| 62 | if method in self.debug_fail: |
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| 63 | raise self.ProtoGENIError(op=method, code='unknown', |
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| 64 | output='No output') |
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| 65 | elif self.debug_response.has_key(method): |
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| 66 | return self.debug_response[method] |
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| 67 | else: |
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| 68 | return "%s XML blob" % method |
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| 69 | |
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| 70 | |
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| 71 | class start_segment(segment_base): |
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| 72 | def __init__(self, log=None, keyfile=None, debug=False, |
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| 73 | ch_url=None, sa_url=None, cm_url=None): |
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| 74 | segment_base.__init__(self, log=log, keyfile=keyfile, debug=debug, |
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| 75 | ch_url=cm_url, sa_url=sa_url, cm_url=cm_url) |
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| 76 | |
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| 77 | |
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| 78 | # Turn the manifest into a dict were each virtual nodename (i.e. the topdl |
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| 79 | # name) has an entry with the allocated machine in hostname and the |
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| 80 | # interfaces in 'interfaces'. I love having XML parser code lying around. |
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| 81 | def manifest_to_dict(self, manifest): |
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| 82 | # XXX |
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| 83 | # if self.debug: return { } |
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| 84 | |
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| 85 | # The class allows us to keep a little state - the dict under |
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| 86 | # consteruction and the current entry in that dict for the interface |
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| 87 | # element code. |
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| 88 | class manifest_parser: |
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| 89 | def __init__(self): |
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| 90 | self.d = { } |
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| 91 | self.current_key=None |
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| 92 | |
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| 93 | # If the element is a node, create a dict entry for it. If it's an |
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| 94 | # interface inside a node, add an entry in the interfaces list with |
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| 95 | # the virtual name and component id. |
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| 96 | def start_element(self, name, attrs): |
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| 97 | if name == 'node': |
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| 98 | self.current_key = attrs.get('virtual_id',"") |
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| 99 | if self.current_key: |
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| 100 | self.d[self.current_key] = { |
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| 101 | 'hostname': attrs.get('hostname', None), |
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| 102 | 'interfaces': { } |
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| 103 | } |
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| 104 | elif name == 'interface' and self.current_key: |
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| 105 | self.d[self.current_key]['interfaces']\ |
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| 106 | [attrs.get('virtual_id','')] = \ |
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| 107 | attrs.get('component_id', None) |
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| 108 | # When a node is finished, clear current_key |
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| 109 | def end_element(self, name): |
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| 110 | if name == 'node': self.current_key = None |
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| 111 | |
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| 112 | |
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| 113 | mp = manifest_parser() |
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| 114 | p = xml.parsers.expat.ParserCreate() |
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| 115 | # These are bound to the class we just created |
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| 116 | p.StartElementHandler = mp.start_element |
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| 117 | p.EndElementHandler = mp.end_element |
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| 118 | |
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| 119 | p.Parse(manifest) |
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| 120 | return mp.d |
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| 121 | |
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| 122 | |
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| 123 | |
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| 124 | def export_store_info(self, cf, nodes, ssh_port, connInfo): |
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| 125 | """ |
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| 126 | For the export requests in the connection info, install the peer names |
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| 127 | at the experiment controller via SetValue calls. |
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| 128 | """ |
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| 129 | |
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| 130 | for c in connInfo: |
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| 131 | for p in [ p for p in c.get('parameter', []) \ |
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| 132 | if p.get('type', '') == 'output']: |
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| 133 | |
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| 134 | if p.get('name', '') == 'peer': |
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| 135 | k = p.get('key', None) |
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| 136 | surl = p.get('store', None) |
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| 137 | if surl and k and k.index('/') != -1: |
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| 138 | if self.debug: |
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| 139 | req = { 'name': k, 'value': 'debug' } |
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| 140 | self.call_SetValue(surl, req, cf) |
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| 141 | else: |
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| 142 | value = nodes.get(k[k.index('/')+1:], |
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| 143 | {}).get('hostname',"") |
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| 144 | if value: |
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| 145 | req = { 'name': k, 'value': value } |
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| 146 | self.call_SetValue(surl, req, cf) |
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| 147 | else: |
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| 148 | self.log.error("No hostname for %s" % \ |
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| 149 | k[k.index('/'):]) |
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| 150 | else: |
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| 151 | self.log.error("Bad export request: %s" % p) |
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| 152 | elif p.get('name', '') == 'ssh_port': |
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| 153 | k = p.get('key', None) |
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| 154 | surl = p.get('store', None) |
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| 155 | if surl and k: |
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| 156 | req = { 'name': k, 'value': self.ssh_port } |
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| 157 | self.call_SetValue(surl, req, cf) |
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| 158 | else: |
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| 159 | self.log.error("Bad export request: %s" % p) |
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| 160 | else: |
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| 161 | |
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| 162 | self.log.error("Unknown export parameter: %s" % \ |
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| 163 | p.get('name')) |
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| 164 | continue |
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| 165 | |
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| 166 | def configure_nodes(self, topo, nodes, user, host, sshd, sshd_config, |
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| 167 | gate_cmd, node_cmd, pubkey, secretkey, stagingdir, tmpdir): |
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| 168 | |
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| 169 | fed_dir = "/usr/local/federation" |
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| 170 | ssh = "/usr/bin/ssh -n -o 'ForwardX11 no' -o 'StrictHostKeyChecking no' " |
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| 171 | scp = "/usr/bin/scp -o 'ForwardX11 no' -o 'StrictHostKeyChecking no' " |
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| 172 | ifconfig = "/sbin/ifconfig" |
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| 173 | tar = "/bin/tar" |
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| 174 | |
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| 175 | for e in [ e for e in topo.elements if isinstance(e, topdl.Computer)]: |
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| 176 | vname = e.name[0] |
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| 177 | node = nodes.get(vname, {}) |
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| 178 | pname = node.get('hostname', None) |
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| 179 | if pname: |
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| 180 | script = open("%s/%s.startup" %(tmpdir, pname), "w") |
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| 181 | # Reset the interfaces to the ones in the topo file |
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| 182 | for i in [ i for i in e.interface \ |
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| 183 | if not i.get_attribute('portal')]: |
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| 184 | pinf = node['interfaces'].get(i.name, None) |
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| 185 | addr = i.get_attribute('ip4_address') |
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| 186 | netmask = i.get_attribute('ip4_netmask') or '255.255.255.0' |
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| 187 | if pinf and addr: |
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| 188 | print >>script, \ |
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| 189 | "%s %s %s netmask %s" % \ |
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| 190 | (ifconfig, pinf, addr, netmask) |
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| 191 | else: |
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| 192 | self.log.error("Missing interface or address for %s" \ |
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| 193 | % i.name) |
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| 194 | |
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| 195 | for s in e.software: |
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| 196 | # XXX: Just tarfiles for now |
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| 197 | if not (s.location and s.install): |
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| 198 | continue |
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| 199 | s_base = s.location.rpartition('/')[2] |
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| 200 | print >>script, "%s %s@%s:%s/%s ." % \ |
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| 201 | (scp, user, host, stagingdir, s_base) |
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| 202 | print >>script, \ |
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| 203 | "%s -C %s -xzf %s" % (tar, s.install, s_base) |
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| 204 | for f in ('hosts', pubkey, secretkey): |
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| 205 | print >>script, "%s %s@%s:%s/%s %s/etc" % \ |
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| 206 | (scp, user, host, stagingdir, f, fed_dir) |
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| 207 | if sshd: |
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| 208 | print >>script, "%s %s@%s:%s %s/bin" % \ |
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| 209 | (scp, user, host, sshd, fed_dir) |
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| 210 | if sshd_config: |
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| 211 | print >>script, "%s %s@%s:%s %s/etc" % \ |
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| 212 | (scp, user, host, sshd_config, fed_dir) |
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| 213 | if os.access("%s/%s.gw.conf" % (tmpdir, vname), os.R_OK): |
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| 214 | print >>script, "%s %s@%s:%s/%s.gw.conf %s/etc" % \ |
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| 215 | (scp, user, host, stagingdir, vname, fed_dir) |
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| 216 | |
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| 217 | # Start commands |
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| 218 | if e.get_attribute('portal') and gate_cmd: |
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| 219 | # Portals never have a user-specified start command |
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| 220 | print >>script, gate_cmd |
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| 221 | elif node_cmd: |
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| 222 | if e.get_attribute('startup'): |
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| 223 | print >>script, "%s \\$USER '%s'" % \ |
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| 224 | (node_cmd, e.get_attribute('startup')) |
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| 225 | else: |
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| 226 | print >>script, node_cmd |
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| 227 | script.close() |
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| 228 | if not self.scp_file("%s/%s.startup" % (tmpdir, pname), |
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| 229 | user, pname): |
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| 230 | self.log.error("Could not copy script to %s" % pname) |
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| 231 | else: |
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| 232 | self.log.error("Unmapped node: %s" % vname) |
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| 233 | |
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| 234 | def start_nodes(self, user, nodes): |
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| 235 | threads = [ ] |
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| 236 | for n in nodes: |
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| 237 | t = Thread(target=self.ssh_cmd, args=(user, n, |
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| 238 | "sudo /bin/sh ./%s.startup" % n)) |
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| 239 | t.start() |
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| 240 | threads.append(t) |
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| 241 | |
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| 242 | done = [not t.isAlive() for t in threads] |
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| 243 | while not all(done): |
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| 244 | self.log.info("Waiting for threads %s" % done) |
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| 245 | time.sleep(10) |
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| 246 | done = [not t.isAlive() for t in threads] |
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| 247 | |
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| 248 | |
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| 249 | |
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| 250 | |
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| 251 | def __call__(self, parent, aid, user, rspec, pubkey, secretkey, |
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| 252 | stagingdir, tmpdir, certfile, certpw, export_certfile, topo, |
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| 253 | connInfo, timeout=0): |
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| 254 | """ |
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| 255 | Start a sub-experiment on a federant. |
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| 256 | |
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| 257 | Get the current state, modify or create as appropriate, ship data |
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| 258 | and configs and start the experiment. There are small ordering |
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| 259 | differences based on the initial state of the sub-experiment. |
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| 260 | """ |
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| 261 | |
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| 262 | def random_slicename(user): |
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| 263 | slicename = user |
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| 264 | for i in range(0,5): |
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| 265 | slicename += random.choice(string.ascii_letters) |
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| 266 | return slicename |
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| 267 | |
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| 268 | host = parent.staging_host |
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| 269 | ctxt = fedd_ssl_context(my_cert=certfile, password=certpw) |
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| 270 | # Local software dir |
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| 271 | lsoftdir = "%s/software" % tmpdir |
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| 272 | |
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| 273 | # Open up a temporary file to contain a script for setting up the |
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| 274 | # filespace for the new experiment. |
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| 275 | self.log.info("[start_segment]: creating script file") |
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| 276 | try: |
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| 277 | sf, scriptname = tempfile.mkstemp() |
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| 278 | scriptfile = os.fdopen(sf, 'w') |
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| 279 | except IOError: |
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| 280 | return False |
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| 281 | |
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| 282 | scriptbase = os.path.basename(scriptname) |
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| 283 | |
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| 284 | # Script the filesystem changes |
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| 285 | print >>scriptfile, "/bin/rm -rf %s" % stagingdir |
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| 286 | print >>scriptfile, 'mkdir -p %s' % stagingdir |
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| 287 | print >>scriptfile, "rm -f %s" % scriptbase |
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| 288 | scriptfile.close() |
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| 289 | |
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| 290 | # Move the script to the remote machine |
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| 291 | # XXX: could collide tempfile names on the remote host |
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| 292 | if self.scp_file(scriptname, user, host, scriptbase): |
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| 293 | os.remove(scriptname) |
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| 294 | else: |
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| 295 | return False |
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| 296 | |
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| 297 | # Execute the script (and the script's last line deletes it) |
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| 298 | if not self.ssh_cmd(user, host, "sh -x %s" % scriptbase): |
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| 299 | return False |
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| 300 | |
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| 301 | # Copy software to the staging machine |
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| 302 | for d in (tmpdir, lsoftdir): |
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| 303 | if os.path.isdir(d): |
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| 304 | for f in os.listdir(d): |
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| 305 | if not os.path.isdir("%s/%s" % (d, f)): |
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| 306 | if not self.scp_file("%s/%s" % (d, f), |
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| 307 | user, host, "%s/%s" % (stagingdir, f)): |
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| 308 | self.log.error("Scp failed") |
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| 309 | return False |
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| 310 | |
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| 311 | try: |
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| 312 | gcred = self.pg_call(self.sa_url, 'GetCredential', {}, ctxt) |
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| 313 | except self.ProtoGENIError, e: |
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| 314 | raise service_error(service_error.federant, |
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| 315 | "ProtoGENI: %s" % e) |
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| 316 | # Find a slicename not in use |
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| 317 | slicename = "fabereGpgL" |
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| 318 | while True: |
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| 319 | slicename = random_slicename(user) |
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| 320 | try: |
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| 321 | param = { |
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| 322 | 'credential': gcred, |
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| 323 | 'hrn': slicename, |
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| 324 | 'type': 'Slice' |
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| 325 | } |
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| 326 | self.pg_call(self.sa_url, 'Resolve', param, ctxt) |
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| 327 | except self.ProtoGENIError, e: |
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| 328 | print e |
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| 329 | break |
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| 330 | |
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| 331 | self.log.info("Creating %s" % slicename) |
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| 332 | f = open("./rspec", "w") |
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| 333 | print >>f, "%s" % rspec |
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| 334 | f.close() |
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| 335 | # Create the slice and allocate resources. If any of this stuff fails, |
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| 336 | # the allocations will time out on PG in short order, so we just raise |
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| 337 | # the service_error. |
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| 338 | try: |
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| 339 | param = { |
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| 340 | 'credential': gcred, |
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| 341 | 'hrn': slicename, |
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| 342 | 'type': 'Slice' |
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| 343 | } |
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| 344 | slice_cred = self.pg_call(self.sa_url, 'Register', param, ctxt) |
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| 345 | f = open("./slice_cred", "w") |
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| 346 | print >>f, slice_cred |
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| 347 | f.close() |
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| 348 | # Populate the ssh keys (let PG format them) |
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| 349 | param = { |
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| 350 | 'credential': gcred, |
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| 351 | } |
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| 352 | keys = self.pg_call(self.sa_url, 'GetKeys', param, ctxt) |
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| 353 | # Grab and redeem a ticket |
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| 354 | param = { |
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| 355 | 'credential': slice_cred, |
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| 356 | 'rspec': rspec, |
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| 357 | } |
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| 358 | ticket = self.pg_call(self.cm_url, 'GetTicket', param, ctxt) |
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| 359 | f = open("./ticket", "w") |
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| 360 | print >>f, ticket |
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| 361 | f.close() |
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| 362 | param = { |
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| 363 | 'credential': slice_cred, |
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| 364 | 'keys': keys, |
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| 365 | 'ticket': ticket, |
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| 366 | } |
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| 367 | sliver_cred, manifest = self.pg_call(self.cm_url, |
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| 368 | 'RedeemTicket', param, ctxt) |
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| 369 | f = open("./sliver_cred", "w") |
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| 370 | print >>f, sliver_cred |
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| 371 | f.close() |
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| 372 | f = open("./manifest", "w") |
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| 373 | print >>f, manifest |
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| 374 | f.close() |
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| 375 | # start 'em up |
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| 376 | param = { |
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| 377 | 'credential': sliver_cred, |
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| 378 | } |
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| 379 | self.pg_call(self.cm_url, 'StartSliver', param, ctxt) |
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| 380 | except self.ProtoGENIError, e: |
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| 381 | raise service_error(service_error.federant, |
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| 382 | "ProtoGENI: %s" % e) |
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| 383 | |
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| 384 | # With manifest in hand, we can export the portal node names. |
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| 385 | nodes = self.manifest_to_dict(manifest) |
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| 386 | self.export_store_info(export_certfile, nodes, parent.ssh_port, |
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| 387 | connInfo) |
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| 388 | |
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| 389 | # Now we wait for the nodes to start on PG |
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| 390 | status = 'notready' |
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| 391 | try: |
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| 392 | while status == 'notready': |
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| 393 | param = { |
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| 394 | 'credential': slice_cred |
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| 395 | } |
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| 396 | r = self.pg_call(self.cm_url, 'SliceStatus', param, ctxt) |
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| 397 | print r |
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| 398 | status = r.get('status', 'notready') |
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| 399 | if status == 'notready': |
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| 400 | time.sleep(30) |
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| 401 | except Self.ProtoGENIError, e: |
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| 402 | raise service_error(service_error.federant, |
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| 403 | "ProtoGENI: %s" % e) |
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| 404 | |
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| 405 | if status == 'failed': |
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| 406 | self.log.error('Sliver failed to start on ProtoGENI') |
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| 407 | try: |
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| 408 | param = { |
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| 409 | 'credential': slice_cred |
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| 410 | } |
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| 411 | self.pg_call(self.cm_url, 'DeleteSliver', param, ctxt) |
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| 412 | except self.ProtoGENIError, e: |
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| 413 | raise service_error(service_error.federant, |
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| 414 | "ProtoGENI: %s" % e) |
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| 415 | return False |
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| 416 | else: |
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| 417 | parent.state_lock.acquire() |
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| 418 | parent.allocation[aid]['slice_credential'] = slice_cred |
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| 419 | parent.allocation[aid]['sliver_credential'] = sliver_cred |
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| 420 | parent.allocation[aid]['manifest'] = manifest |
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| 421 | parent.allocation[aid]['certfile'] = certfile |
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| 422 | parent.allocation[aid]['certpw'] = certpw |
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| 423 | parent.write_state() |
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| 424 | parent.state_lock.release() |
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| 425 | |
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| 426 | # The startcmds for portals and standard nodes (the Master Slave |
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| 427 | # distinction is going away) |
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| 428 | gate_cmd = parent.attrs.get('SlaveConnectorStartCmd', '/bin/true') |
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| 429 | node_cmd = parent.attrs.get('SlaveNodeStartCmd', 'bin/true') |
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| 430 | |
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| 431 | # Now we have configuration to do for ProtoGENI |
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| 432 | self.configure_nodes(topo, nodes, user, parent.staging_host, |
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| 433 | parent.sshd, parent.sshd_config, gate_cmd, node_cmd, |
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| 434 | pubkey, secretkey, stagingdir, tmpdir) |
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| 435 | |
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| 436 | self.start_nodes(user, [ n['hostname'] for n in nodes.values()]) |
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| 437 | |
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| 438 | # Everything has gone OK. |
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| 439 | return True |
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| 440 | |
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| 441 | class stop_segment(segment_base): |
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| 442 | def __init__(self, log=None, keyfile=None, debug=False, |
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| 443 | ch_url=None, sa_url=None, cm_url=None): |
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| 444 | segment_base.__init__(self, log=log, keyfile=keyfile, debug=debug, |
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| 445 | ch_url=cm_url, sa_url=sa_url, cm_url=cm_url) |
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| 446 | |
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| 447 | def __call__(self, parent, user, stagingdir, slice_cred, certfile, certpw): |
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| 448 | """ |
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| 449 | Stop a sub experiment by calling swapexp on the federant |
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| 450 | """ |
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| 451 | host = parent.staging_host |
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| 452 | rv = False |
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| 453 | try: |
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| 454 | # Clean out tar files: we've gone over quota in the past |
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| 455 | if stagingdir: |
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| 456 | self.ssh_cmd(user, host, "rm -rf %s" % stagingdir) |
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| 457 | if slice_cred: |
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| 458 | self.log.error('Removing Sliver on ProtoGENI') |
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| 459 | ctxt = fedd_ssl_context(my_cert=certfile, password=certpw) |
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| 460 | try: |
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| 461 | param = { |
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| 462 | 'credential': slice_cred |
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| 463 | } |
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| 464 | self.pg_call(self.cm_url, 'DeleteSlice', param, ctxt) |
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| 465 | except self.ProtoGENIError, e: |
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| 466 | raise service_error(service_error.federant, |
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| 467 | "ProtoGENI: %s" % e) |
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| 468 | return True |
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| 469 | except self.ssh_cmd_timeout: |
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| 470 | rv = False |
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| 471 | return rv |
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| 472 | |
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