| 1 | #----------------------------------#
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| 2 | # -- Author: V.Garonne
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| 3 | # -- Date: 08/25/2006
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| 4 | # -- Name: tbroadcast
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| 5 | # -- Description: mainc class
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| 6 | #----------------------------------#
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| 7 |
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| 8 | import os
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| 9 | import sys
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| 10 | import time
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| 11 | import string
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| 12 | import random
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| 13 | import commands
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| 14 |
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| 15 | from threadpool import WorkRequest
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| 16 | from threadpool import ThreadPool
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| 17 | from threadpool import NoResultsPending
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| 18 | from threadpool import NoWorkersAvailable
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| 19 | from threadpool import makeRequests
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| 20 | from executer import exeCommand
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| 21 |
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| 22 | class Scheduler:
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| 23 |
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| 24 | def __init__(self, num_workers=20):
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| 25 | self.pool = ThreadPool(num_workers=num_workers)
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| 26 | self.packages = {}
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| 27 | self.instanciate_packages ()
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| 28 |
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| 29 | def instanciate_packages(self):
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| 30 | # We create the schedule of the work units
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| 31 | cmd = 'cmt show uses'
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| 32 | status, output = commands.getstatusoutput (cmd)
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| 33 | if status != 0:
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| 34 | print output
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| 35 | sys.exit(-1)
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| 36 | lines = string.split(output, '\n')
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| 37 | current_package = self.get_current_package()
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| 38 | self.packages [current_package] = {'version': '*', 'dependencies': list(), 'status': 'waiting', 'path':os.getcwd()}
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| 39 | for line in lines:
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| 40 | if line [0] == '#' and line[:5] != "#CMT>" and line not in ['# Selection :','#']:
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| 41 | name = string.split (line)[2]
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| 42 | version = string.split (line)[3]
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| 43 | if name not in self.packages[current_package]['dependencies']:
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| 44 | self.packages[current_package]['dependencies'].append (name)
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| 45 | if not self.packages.has_key (name):
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| 46 | self.packages [name] = {'version': version, 'dependencies': list(), 'status': 'waiting', 'path':self.get_package_path(name)}
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| 47 | found = False
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| 48 | for ligne in lines:
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| 49 | if ligne [0] == '#' and ligne[:5] != "#CMT>" and ligne not in ['# Selection :','#']:
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| 50 | if found:
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| 51 | if level < string.find(ligne, 'use'):
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| 52 | if string.split (ligne)[2] not in self.packages[name]['dependencies']:
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| 53 | self.packages[name]['dependencies'].append (string.split (ligne)[2])
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| 54 | else:
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| 55 | found = False
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| 56 | if name == string.split (ligne)[2]:
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| 57 | level = string.find(ligne, 'use')
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| 58 | found = True
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| 59 |
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| 60 | def get_current_package(self):
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| 61 | cmd = 'cmt show macro package'
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| 62 | status, output = commands.getstatusoutput (cmd)
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| 63 | if status != 0:
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| 64 | print output
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| 65 | sys.exit(-1)
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| 66 | lines = string.split(output, '\n')
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| 67 | for line in lines:
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| 68 | if line [0] != '#':
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| 69 | start = string.find(line,"'")
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| 70 | end = string.find(line[start+1:len(line)],"'")
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| 71 | return line [start+1:start+end+1]
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| 72 |
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| 73 | def get_work_area_path (self, name):
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| 74 | return self.packages [name]['path']
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| 75 |
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| 76 | def get_package_path (self, name):
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| 77 | cmd = 'cmt -use='+name+' run pwd'
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| 78 | status, output = commands.getstatusoutput (cmd)
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| 79 | if status != 0:
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| 80 | print output
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| 81 | sys.exit(-1)
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| 82 | lines = string.split(output, '\n')
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| 83 | for line in lines:
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| 84 | if line [0] != '#':
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| 85 | return line
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| 86 |
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| 87 | def print_dependencies(self):
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| 88 | print '# ------------------------'
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| 89 | print '# package --> dependencies'
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| 90 | print '# ------------------------'
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| 91 | for key in self.packages.keys():
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| 92 | print key, '-->', self.packages[key] ['dependencies'],',', self.packages[key] ['status']
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| 93 |
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| 94 | def is_work_unit_waiting (self, name):
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| 95 | return self.packages[name] ['status'] == 'waiting'
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| 96 |
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| 97 | def set_work_unit_status (self, name, status):
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| 98 | self.packages[name] ['status'] = status
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| 99 |
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| 100 | def get_dependencies (self, name):
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| 101 | return self.packages[name] ['dependencies']
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| 102 |
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| 103 | def get_next_work_units (self):
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| 104 | result = list ()
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| 105 | for key in self.packages.keys():
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| 106 | if len(self.get_dependencies (key)) == 0 and self.is_work_unit_waiting(key) :
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| 107 | result.append(key)
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| 108 | return result
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| 109 |
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| 110 | def suppress_work_unit (self, name):
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| 111 | print '# remove', name, 'from schedule'
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| 112 | for key in self.packages.keys():
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| 113 | if name in self.packages[key]['dependencies']:
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| 114 | self.packages[key]['dependencies'].remove(name)
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| 115 |
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| 116 | def add_work_unit (self, name, cmd):
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| 117 | if self.is_work_unit_waiting (name):
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| 118 | # we create requests
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| 119 | arg = {'cmd': cmd , 'package':name}
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| 120 | req = WorkRequest(self.do_execute, [arg] , None, callback=self.result_callback, exc_callback=self.handle_exception)
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| 121 | # then we put the work request in the queue...
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| 122 | self.set_work_unit_status (name, 'queued')
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| 123 | self.pool.putRequest(req)
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| 124 | #print "# Work request #%s added on %s." % (req.requestID, str(arg['package']))
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| 125 |
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| 126 | def execute (self, command):
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| 127 | self.print_dependencies ()
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| 128 | packages = self.get_next_work_units()
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| 129 | if len(packages) !=0:
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| 130 | print '\n# Execute parallel actions within ', packages
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| 131 | for package in packages:
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| 132 | self.add_work_unit (package, command)
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| 133 |
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| 134 | def execute_all(self,command):
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| 135 | self.execute (command)
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| 136 | self.wait()
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| 137 |
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| 138 | def wait (self):
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| 139 | self.pool.wait()
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| 140 |
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| 141 | # this will be called each time a result is available
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| 142 | def result_callback(self, request, result):
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| 143 | #print "**Result: %s from request #%s" % (str(result), request.requestID)
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| 144 | print "# Result: %s from request #%s" % (result['package'], request.requestID)
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| 145 | self.execute (result['cmd'])
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| 146 |
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| 147 | # the work the threads will have to do
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| 148 | def do_execute(self, arg):
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| 149 | path = self.get_work_area_path (arg['package'])
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| 150 | print '#--------------------------------------------------------------'
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| 151 | print '# Now trying ['+ arg['cmd']+'] in ' + path
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| 152 | print '#--------------------------------------------------------------'
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| 153 | self.set_work_unit_status (arg['package'], 'running')
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| 154 | cmd = "cmt -use="+ arg['package'] + " run '"+ arg['cmd'] + "'"
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| 155 | os.chdir(path)
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| 156 | cmd = arg['cmd']
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| 157 | status, output, error, pythonError = exeCommand(cmd, iTimeout = 10)
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| 158 | self.suppress_work_unit (arg['package'])
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| 159 | self.set_work_unit_status (arg['package'], 'done')
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| 160 | # status, output= commands.getstatusoutput(cmd)
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| 161 | #print output
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| 162 | #if status != 0:
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| 163 | # raise RuntimeError(output)
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| 164 | return {'output':output, 'cmd': arg['cmd'], 'package':arg['package']}
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| 165 |
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| 166 | # this will be called when an exception occurs within a thread
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| 167 | def handle_exception(self, request, exc_info):
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| 168 | print "# Exception occured in request #%s: %s" % \
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| 169 | (request.requestID, exc_info[1])
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| 170 | #--------- EoF --------# |
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