#! /usr/bin/env python
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# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
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#
#     http://www.apache.org/licenses/LICENSE-2.0
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import sys
import os
import getopt

#designed to run only here, relative to ducc_runtime
DUCC_HOME = os.path.abspath(__file__ + '/../../..')
sys.path.append(DUCC_HOME + '/admin')

from ducc_util  import DuccUtil
from properties import Properties

class RegService(DuccUtil):

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

        print 'This script creates a service descriptor for one of the 10 defined sample'
        print 'services and registers it.  It optionally writes the descriptor to a'
        print 'file, optionally starts the service, and optionally allows the registration'
        print 'of multiple instances of the service.'
        print ''
        print 'Usage:'
        print ''
        print '   define_service --id <id> [--file <descriptor file>] [--instances <num instances>] [--description "text"]'
        print '   define_service   -i <id> [ -f    <descriptor file>] [ -n         <num instances>]'
        print ''
        print 'Where:'
        print '    -i  <id>'
        print '    -id <id> Specifies which of the 10 defined services to register.'
        print '            The services are identical aside from their endpoint, to allow'
        print '            convenient testing of multiple services.'
        print ''
        print '    -f     <descriptor file>'
        print '    --file <descriptor file> If given, also write out the generated service descriptor'
        print '            to this file.'
        print ''
        print '    -n          <num instances>'
        print '    --instances <num instances> If given, specifies the default number instances of the service.'
        print '            The number of instances is optional.  If not given, one instance'
        print '            is registered. This may be modified with ducc_services --instances <n> later.'  
        print ''
        print '    --description "text" If given, specifies the description for this service.'
        print ''
        print 'Notes:'
        print '   This is not a replacement or substitute for the "ducc_services" CLI. This script'
        print '   is intended only to build a service descriptor for one of the predefined sample'
        print'    services for test and verification purposes.'
        print '' 
        sys.exit(1)

    def main(self, argv):

        svcid = None
        outfile = None
        instances = 1
        props = Properties()
        description = None

        if ( len(argv) == 0 ):
            self.usage(None)

        opts, args  = getopt.getopt(argv, 'i:f:n:?h', ['id=', 'file=', 'instances=', 'description=', 'help'])   
        for ( o, a ) in opts:
            if o in ('-i', '--id'):
                svcid = a
            elif o in ('-f', '--file'):
                outfile = a
                props = Properties()
            elif o in ('-n', '--instances'):
                instances = int(a)
            elif o in ('--description'):
                description = a
            elif o in ('-h', '--help'):
                self.usage()

        if ( svcid == None ):
            self.usage("Missing service id")

        if ( description == None ):
            description = "Test Service "+svcid
            
        self.examples_classpath = self.DUCC_HOME + '/lib/uima-ducc/examples/*'
        self.examples_classpath = self.examples_classpath + ':' + self.DUCC_HOME + '/apache-uima/lib/*'
        self.examples_classpath = self.examples_classpath + ':' + self.DUCC_HOME + '/apache-uima/apache-activemq/lib/*'
        self.examples_classpath = self.examples_classpath + ':' + self.DUCC_HOME + '/apache-uima/apache-activemq/lib/optional/*'
        self.examples_classpath = self.examples_classpath + ':' + self.DUCC_HOME + '/examples/simple/resources/service'

        plain_broker_url = self.broker_protocol + '://' + self.broker_host + ':' + self.broker_port
        props.put('description', description)
        props.put('process_descriptor_DD', self.DUCC_HOME + '/examples/simple/resources/service/Service_FixedSleep_' + svcid + '.xml')
        props.put('process_memory_size', '15')
        props.put('classpath', self.examples_classpath);
        props.put('process_jvm_args', '-DdefaultBrokerURL=' + plain_broker_url)
        props.put('environment', 'AE_INIT_TIME=5000 AE_INIT_RANGE=1000 INIT_ERROR=0')
        props.put('scheduling_class', 'fixed')
        props.put('working_directory', os.getcwd())
        props.put('service_ping_arguments', 'broker-jmx-port=' + self.broker_jmx_port)

        if ( outfile != None ):
            props.write(outfile)
            print outfile, 'created.'
        
        CMD = ' '.join((self.DUCC_HOME + '/bin/ducc_services', '--register', '--instances', str(instances)))
        for (k, v) in props.items():
            CMD = CMD + ' --' + k + " '" + v.v + "'"
        print CMD
        os.system(CMD)

if __name__ == "__main__":
    rs = RegService()
    rs.main(sys.argv[1:])