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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 '+serverName)
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self.url ='https://cmsweb.cern.ch/crabconf/'
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# self.url ='http://www.pd.infn.it/~lacaprar/Computing/'
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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.split(string.strip(it))) for it in tmp if (it.strip() and not it.strip()[0]=="#")]
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common.logger.debug(5,'All avaialble servers: '+str(serverList))
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# select servers from client version
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compatibleServerList=[]
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for s in serverList:
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vv=string.split(s[1],'-')
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if len(vv[0])==0: vv[0]='0.0.0'
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if len(vv[1])==0: vv[1]='99.99.99'
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for i in 0,1:
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tmp=[]
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[tmp.append(int(t)) for t in vv[i].split('.')]
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vv[i]=tuple(tmp)
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#[vv.append(tuple(t.split('.'))) for t in string.split(s[1],'-')]
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common.prog_version
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#print vv[0],common.prog_version,vv[1]
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if vv[0]<=common.prog_version and common.prog_version<=vv[1]: compatibleServerList.append(s[0])
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common.logger.debug(5,'All avaialble servers compatible with %s: '%common.prog_version_str +str(serverList))
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if len(compatibleServerList)==0:
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msg = "No compatible server available with client version %s\n"%common.prog_version_str
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msg += "Exiting"
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raise CrabException(msg)
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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(compatibleServerList)
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common.logger.debug(5,'Avaialble servers: '+str(compatibleServerList)+' choosen: '+serverName)
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common.logger.write('Avaialble servers: '+str(compatibleServerList)+' 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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self.theConfig['serverGenericName']=serverName
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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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