| 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 | import os.path |
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| 6 | |
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| 7 | import tempfile |
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| 8 | import subprocess |
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| 9 | import logging |
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| 10 | import time |
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| 11 | import signal |
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| 12 | |
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| 13 | import util |
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| 14 | |
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| 15 | from deter import topdl |
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| 16 | |
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| 17 | from ssh_emulab_segment import ssh_emulab_segment |
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| 18 | from xmlrpc_emulab_segment import xmlrpc_emulab_segment |
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| 19 | |
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| 20 | |
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| 21 | class start_segment(ssh_emulab_segment, xmlrpc_emulab_segment): |
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| 22 | def __init__(self, log=None, keyfile=None, debug=False, boss=None, |
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| 23 | ops=None, cert=None): |
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| 24 | ssh_emulab_segment.__init__(self, log=log, keyfile=keyfile, debug=debug) |
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| 25 | xmlrpc_emulab_segment.__init__(self, boss=boss, ops=ops, cert=cert) |
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| 26 | # XXX: better way to work this... |
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| 27 | self.containerize = '/share/containers-dev/containerize.py --config /share/containers-dev/site.conf %s %s %s' |
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| 28 | |
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| 29 | def get_mapping(self, pid, eid): |
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| 30 | """ |
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| 31 | Containers's info reporting is not sufficient to support this yet |
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| 32 | """ |
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| 33 | pass |
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| 34 | |
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| 35 | def set_up_experiment_filespace(self, user, host, pid, eid, tmpdir): |
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| 36 | """ |
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| 37 | Send all the software and configuration files into the experiment's |
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| 38 | file space. To reduce the number of ssh connections, we script many |
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| 39 | changes and execute the script. |
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| 40 | """ |
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| 41 | # Configuration directories on the remote machine |
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| 42 | proj_dir = "/proj/%s/exp/%s/tmp" % (pid, eid) |
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| 43 | softdir = "/proj/%s/software/%s" % (pid, eid) |
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| 44 | # Local software dir |
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| 45 | lsoftdir = "%s/software" % tmpdir |
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| 46 | |
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| 47 | # Open up a temporary file to contain a script for setting up the |
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| 48 | # filespace for the new experiment. |
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| 49 | self.log.info("[start_segment]: creating script file") |
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| 50 | try: |
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| 51 | sf, scriptname = tempfile.mkstemp() |
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| 52 | scriptfile = os.fdopen(sf, 'w') |
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| 53 | except EnvironmentError: |
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| 54 | return False |
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| 55 | |
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| 56 | scriptbase = os.path.basename(scriptname) |
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| 57 | |
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| 58 | # Script the filesystem changes |
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| 59 | print >>scriptfile, "/bin/rm -rf %s" % proj_dir |
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| 60 | # Clear and create the software directory |
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| 61 | print >>scriptfile, "/bin/rm -rf %s/*" % softdir |
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| 62 | print >>scriptfile, 'mkdir -p %s' % proj_dir |
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| 63 | if os.path.isdir(lsoftdir): |
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| 64 | print >>scriptfile, 'mkdir -p %s' % softdir |
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| 65 | print >>scriptfile, "rm -f %s" % scriptbase |
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| 66 | scriptfile.close() |
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| 67 | |
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| 68 | # Move the script to the remote machine |
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| 69 | # XXX: could collide tempfile names on the remote host |
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| 70 | if self.scp_file(scriptname, user, host, scriptbase): |
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| 71 | os.remove(scriptname) |
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| 72 | else: |
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| 73 | return False |
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| 74 | |
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| 75 | # Execute the script (and the script's last line deletes it) |
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| 76 | if not self.ssh_cmd(user, host, "sh -x %s" % scriptbase): |
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| 77 | return False |
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| 78 | |
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| 79 | for f in os.listdir(tmpdir): |
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| 80 | if not os.path.isdir("%s/%s" % (tmpdir, f)): |
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| 81 | if not self.scp_file("%s/%s" % (tmpdir, f), user, host, |
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| 82 | "%s/%s" % (proj_dir, f)): |
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| 83 | return False |
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| 84 | if os.path.isdir(lsoftdir): |
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| 85 | for f in os.listdir(lsoftdir): |
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| 86 | if not os.path.isdir("%s/%s" % (lsoftdir, f)): |
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| 87 | if not self.scp_file("%s/%s" % (lsoftdir, f), |
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| 88 | user, host, "%s/%s" % (softdir, f)): |
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| 89 | return False |
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| 90 | return True |
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| 91 | |
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| 92 | |
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| 93 | def __call__(self, parent, eid, pid, user, tclfile, tmpdir, timeout=0, |
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| 94 | gid=None): |
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| 95 | """ |
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| 96 | Start a sub-experiment on a federant. |
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| 97 | |
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| 98 | Get the current state, and terminate the experiment if it exists. The |
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| 99 | group membership of the experiment is difficult to determine or change, |
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| 100 | so start with a clean slate. Create a new one and ship data |
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| 101 | and configs and start the experiment. There are small ordering |
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| 102 | differences based on the initial state of the sub-experiment. |
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| 103 | """ |
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| 104 | |
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| 105 | # containers listens to the filename extension. tclfile here is really |
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| 106 | # topdl, but we'll move it to a different filename. |
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| 107 | if tclfile.endswith('.tcl'): |
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| 108 | topdlfile = os.path.join(tmpdir, 'experiment.xml') |
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| 109 | self.ssh_cmd(user, self.ops, 'mv %s %s' % (tclfile, topdlfile)) |
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| 110 | else: |
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| 111 | topdlfile = tclfile |
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| 112 | |
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| 113 | |
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| 114 | state = self.get_state(pid, eid) |
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| 115 | |
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| 116 | if state != 'none': |
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| 117 | self.terminate_exp(pid, eid) |
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| 118 | |
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| 119 | cmd = self.containerize % (pid, eid, topdlfile) |
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| 120 | |
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| 121 | if not self.ssh_cmd(user, self.ops, cmd): |
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| 122 | self.log.error("Cannot create containers experiment") |
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| 123 | return False |
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| 124 | |
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| 125 | if not self.set_up_experiment_filespace(user, self.ops, |
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| 126 | pid, eid, tmpdir): |
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| 127 | return False |
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| 128 | |
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| 129 | if not self.swap_exp(pid, eid, 'in'): |
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| 130 | self.log.error("swap in failed") |
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| 131 | return False |
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| 132 | # Everything has gone OK. |
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| 133 | self.get_mapping(pid,eid) |
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| 134 | return True |
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| 135 | |
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| 136 | class stop_segment(ssh_emulab_segment, xmlrpc_emulab_segment): |
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| 137 | def __init__(self, log=None, keyfile=None, debug=False, boss=None, |
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| 138 | ops=None, cert=None): |
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| 139 | ssh_emulab_segment.__init__(self, log=log, keyfile=keyfile, debug=debug) |
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| 140 | xmlrpc_emulab_segment.__init__(self, boss=boss, ops=ops, cert=cert) |
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| 141 | |
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| 142 | def __call__(self, parent, user, pid, eid, gid=None, terminate=False): |
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| 143 | """ |
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| 144 | Stop a sub experiment by calling swapexp on the federant |
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| 145 | """ |
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| 146 | |
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| 147 | self.log.info("[stop_segment]: Stopping %s" % eid) |
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| 148 | rv = False |
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| 149 | try: |
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| 150 | # Clean out tar files: we've gone over quota in the past |
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| 151 | self.ssh_cmd(user, self.ops, |
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| 152 | "rm -rf /proj/%s/software/%s" % (pid, eid)) |
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| 153 | rv = self.swap_exp(pid, eid, 'out') |
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| 154 | if terminate: |
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| 155 | rv = self.terminate_exp(pid, eid) |
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| 156 | except self.ssh_cmd_timeout: |
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| 157 | rv = False |
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| 158 | return rv |
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| 159 | |
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| 160 | class info_segment(ssh_emulab_segment, xmlrpc_emulab_segment): |
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| 161 | def __init__(self, log=None, keyfile=None, debug=False, boss=None, |
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| 162 | ops=None, cert=None): |
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| 163 | ssh_emulab_segment.__init__(self, log=log, keyfile=keyfile, debug=debug) |
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| 164 | xmlrpc_emulab_segment.__init__(self, boss=boss, ops=ops, cert=cert) |
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| 165 | |
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| 166 | def get_mapping(self, pid, eid): |
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| 167 | """ |
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| 168 | Benito's info reporting is not sufficient to support this yet |
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| 169 | """ |
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| 170 | pass |
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| 171 | |
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| 172 | def __call__(self, parent, user, pid, eid): |
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| 173 | self.log.info("[info_segment]: Getting info from %s" % eid) |
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| 174 | self.get_mapping(pid,eid) |
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| 175 | return True |
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| 176 | |
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| 177 | class operation_segment(ssh_emulab_segment, xmlrpc_emulab_segment): |
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| 178 | def __init__(self, log=None, keyfile=None, debug=False, boss=None, |
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| 179 | ops=None, cert=None): |
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| 180 | ssh_emulab_segment.__init__(self, log=log, keyfile=keyfile, debug=debug) |
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| 181 | xmlrpc_emulab_segment.__init__(self, boss=boss, ops=ops, cert=cert) |
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| 182 | |
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| 183 | def __call__(self, parent, op, targets, param, top): |
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| 184 | self.status.append('operations not yet supported') |
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| 185 | return True |
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