1 | #!/usr/local/bin/python |
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2 | |
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3 | import os,sys |
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4 | |
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5 | from ZSI import * |
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6 | from M2Crypto import SSL |
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7 | from M2Crypto.SSL.SSLServer import SSLServer |
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8 | import M2Crypto.httpslib |
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9 | |
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10 | import xml.parsers.expat |
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11 | |
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12 | import re |
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13 | import random |
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14 | import string |
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15 | import subprocess |
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16 | import tempfile |
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17 | import copy |
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18 | import pickle |
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19 | |
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20 | import traceback |
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21 | |
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22 | from threading import * |
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23 | |
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24 | from subprocess import * |
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25 | |
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26 | from fedd_services import * |
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27 | from fedd_internal_services import * |
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28 | from fedd_util import * |
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29 | import parse_detail |
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30 | from service_error import * |
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31 | |
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32 | import logging |
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33 | |
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34 | class nullHandler(logging.Handler): |
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35 | def emit(self, record): pass |
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36 | |
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37 | fl = logging.getLogger("fedd.experiment_control") |
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38 | fl.addHandler(nullHandler()) |
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39 | |
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40 | class fedd_split_local: |
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41 | def __init__(self, config=None): |
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42 | """ |
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43 | Intialize the various attributes, most from the config object |
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44 | """ |
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45 | if config.has_section("splitter"): |
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46 | self.debug = config.getboolean("splitter", "debug") |
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47 | self.muxmax = config.getint("splitter", "muxmax", 3) |
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48 | else: |
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49 | self.debug = False |
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50 | self.muxmax = 3 |
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51 | |
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52 | self.log = logging.getLogger("fedd.splitter") |
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53 | self.tclsh = "/usr/local/bin/otclsh" |
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54 | self.tcl_splitter = "/usr/testbed/lib/ns2ir/parse.tcl" |
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55 | self.trace_file = sys.stderr |
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56 | |
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57 | # Dispatch tables |
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58 | self.soap_services = {\ |
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59 | 'Ns2Split': make_soap_handler(\ |
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60 | Ns2SplitRequestMessage.typecode, |
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61 | getattr(self, "run_splitter"), |
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62 | Ns2SplitResponseMessage, |
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63 | "Ns2SplitResponseBody"), |
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64 | } |
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65 | |
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66 | self.xmlrpc_services = {\ |
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67 | 'Ns2Split': make_xmlrpc_handler(\ |
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68 | getattr(self, "run_splitter"), |
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69 | "Ns2SplitResponseBody"), |
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70 | } |
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71 | |
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72 | def run_splitter(self, req, fid): |
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73 | """ |
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74 | The external interface to experiment creation called from the |
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75 | dispatcher. |
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76 | |
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77 | Creates a working directory, splits the incoming description using the |
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78 | splitter script and parses out the avrious subsections using the |
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79 | lcasses above. Once each sub-experiment is created, use pooled threads |
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80 | to instantiate them and start it all up. |
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81 | """ |
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82 | try: |
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83 | tmpdir = tempfile.mkdtemp(prefix="split-") |
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84 | except IOError: |
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85 | raise service_error(service_error.internal, "Cannot create tmp dir") |
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86 | |
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87 | tclfile = tmpdir + "/experiment.tcl" |
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88 | pid = "dummy" |
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89 | gid = "dummy" |
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90 | eid = "dummy" |
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91 | |
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92 | req = req.get('Ns2SplitRequestBody', None) |
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93 | if not req: |
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94 | raise service_error(service_error.req, |
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95 | "Bad request format (no Ns2SplitRequestBody)") |
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96 | # The tcl parser needs to read a file so put the content into that file |
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97 | descr=req.get('description', None) |
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98 | if descr: |
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99 | file_content=descr.get('ns2description', None) |
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100 | if file_content: |
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101 | try: |
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102 | f = open(tclfile, 'w') |
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103 | f.write(file_content) |
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104 | f.close() |
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105 | except IOError: |
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106 | raise service_error(service_error.internal, |
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107 | "Cannot write temp experiment description") |
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108 | else: |
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109 | raise service_error(service_error.req, |
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110 | "Only ns2descriptions supported") |
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111 | else: |
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112 | raise service_error(service_error.req, "No description") |
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113 | |
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114 | master = req.get('master', None) |
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115 | if master == None: |
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116 | raise service_error(service_error.req, "No master testbed label") |
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117 | |
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118 | |
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119 | tclcmd = [self.tclsh, self.tcl_splitter, '-s', '-x', |
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120 | str(self.muxmax), '-m', master, pid, gid, eid, tclfile] |
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121 | tclparser = Popen(tclcmd, stdout=PIPE) |
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122 | |
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123 | out = "" |
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124 | # Package up the split data |
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125 | for line in tclparser.stdout: |
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126 | out += line |
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127 | |
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128 | # Walk up tmpdir, deleting as we go |
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129 | for path, dirs, files in os.walk(tmpdir, topdown=False): |
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130 | for f in files: |
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131 | os.remove(os.path.join(path, f)) |
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132 | for d in dirs: |
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133 | os.rmdir(os.path.join(path, d)) |
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134 | os.rmdir(tmpdir) |
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135 | |
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136 | resp = { 'output' : out } |
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137 | |
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138 | return resp |
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139 | |
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140 | |
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