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from crab_logger import Logger
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from crab_exceptions import *
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from crab_util import *
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import common
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import urllib
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import os, time
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class ServerConfig:
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def __init__(self, serverName):
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import string
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serverName = string.lower(serverName)
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common.logger.debug(5,'Calling ServerConfig')
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# self.url = 'http://cmsdoc.cern.ch/cms/ccs/wm/www/Crab/useful_script/'
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self.url ='https://cmsweb.cern.ch/crabconf/files/'
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if 'default' in serverName:
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common.logger.debug(5,'getting serverlist from web')
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# get a list of available servers
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serverListFileName ='AvalableServerList'
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serverListFile = self.getConfig_(serverListFileName)
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# parse the localCfg file
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f = open(serverListFile, 'r')
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tmp = f.readlines()
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f.close()
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if not tmp:
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msg = 'List of avalable Server '+serverListFileName+' from '+self.url+' is empty\n'
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msg += 'Please report to CRAB feedback hypernews'
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raise CrabException(msg)
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# clean up empty lines and comments
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serverList=[]
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[serverList.append(string.strip(it)) for it in tmp if (it.strip() and not it.strip()[0]=="#")]
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# if more than one, pick up a random one, waiting for something smarter (SiteDB)
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import random
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serverName = random.choice(serverList)
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common.logger.debug(5,'Avaialble servers: '+str(serverList)+' choosen: '+serverName)
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common.logger.write('Avaialble servers: '+str(serverList)+' choosen: '+serverName)
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if 'server_' in serverName:
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configFileName = '%s.conf'%serverName
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else:
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configFileName = 'server_%s.conf'%serverName
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localCfg = self.getConfig_(configFileName)
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# parse the localCfg file
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f = open(localCfg, 'r')
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l = ''.join( f.readlines() )
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f.close()
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if not l:
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l = str('{}')
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self.theConfig = eval(l)
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pass
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def config(self):
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return self.theConfig
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def downloadFile(self, url, destination):
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try:
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f = urllib.urlopen(url)
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data = f.read()
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if '<!' in data[:2]:
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raise IOError
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ff = open(destination, 'w')
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ff.write(data)
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ff.close()
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except IOError:
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raise CrabException('Cannot download config file '+destination+' from '+self.url)
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def getConfig_(self, configFileName):
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url = self.url+configFileName
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if not os.path.exists(configFileName):
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common.logger.message('Downloading config files for '+url)
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self.downloadFile( url, configFileName)
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else:
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statinfo = os.stat(configFileName)
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## if the file is older then 12 hours it is re-downloaded to update the configuration
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oldness = 12*3600
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if (time.time() - statinfo.st_ctime) > oldness:
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common.logger.message('Downloading config files for '+url)
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self.downloadFile( url, configFileName)
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pass
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return os.getcwd()+'/'+configFileName
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