#!/usr/bin/env python
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import os
import sys

from ducc_util  import DuccUtil

class DuccRmReconfigure(DuccUtil):
    def __init__(self):
        DuccUtil.__init__(self, True)

    def usage(self, msg):
        if ( msg != None ):
            print msg

        print 'Usage:'
        print '   rm_reconfigure'
        print ''
        print 'Notes:'
        print '    This forces the RM to stop scheduling, reread its configuration, and restart the scheduler.'
        print 'This is the equivalent of stopping RM, waiting for it to quiesce, and restarting RM.'
        sys.exit(1)
    
    def main(self, args):

        print 'Reconfiguring RM'
        DUCC_JVM_OPTS = ' -Dducc.deploy.configuration=' + self.DUCC_HOME + "/resources/ducc.properties "
        DUCC_JVM_OPTS = DUCC_JVM_OPTS + ' -DDUCC_HOME=' + self.DUCC_HOME
        DUCC_JVM_OPTS = DUCC_JVM_OPTS + ' -Dducc.head=' + self.ducc_properties.get('ducc.head')

        self.spawn(self.java(), DUCC_JVM_OPTS, 'org.apache.uima.ducc.common.main.DuccRmAdmin', '--reconfigure')

        # Web server updates Machines page when the classes file changes
        class_file = self.ducc_properties.get('ducc.rm.class.definitions')
        CMD = 'touch ' + self.DUCC_HOME + '/resources/' + class_file
        os.system(CMD)

        return

if __name__ == "__main__":
    np = DuccRmReconfigure()
    np.main(sys.argv[1:])