#####################################################################
# launchJava.py (Jython)
#
# Launches the PrintEnvComponent, sets the parameters to the
# System properties set by the run.sh script, and calls write.
#
# Example code by Albert L. Rossi, IU Extreme! Computing
# December 2001
#####################################################################

import sys
import cca

from java.lang import *
from jarray import *

machine = "k2.extreme.indiana.edu"

print "\ncreating component wrapper\n"
xmlpath = "../xml/printEnv.xml"
componentProxy = cca.createComponent (xmlpath)

print "\ninstantiating component on", machine, "\n"
cca.setMachineName (componentProxy, machine)
cca.setCreationMechanism (componentProxy, "gram")
cca.createInstance (componentProxy)

usesPortClassName = "demo.UsesParamControl"
usesPortType = "http://www.extreme.indiana.edu/demo/wsdl#control"
providesPortName = "controlProvidesPort"

###########################################################
## The array nesting here reflects the following semantics:
## invokeMethodOnComponent takes an array of Objects
## representing the parameters of the method, in this case
## "sendParameter"; this is itself just a single array of 
## Objects, which in turn represents the arguments of
## the method to be called by "sendParameter": that is,
## in this instance, the component's "init", which again
## takes a single argument, an array of Strings.
###########################################################
methodName = "sendParameter"
methodParams = zeros(1, Object)    #invokeMethodOnComponent
methodParams[0] = zeros(1, Object) #sendParameter
args = zeros(4, String)            #component's init
args[0] = String("HOME")
args[1] = String("log")
args[2] = String("java.compiler")
args[3] = String("PYTHONPATH")
methodParams[0][0] = args

print "\ninitializing component\n"
cca.invokeMethodOnComponent(componentProxy, 
                            usesPortClassName, 
                            usesPortType,
			    providesPortName, 
                            methodName, 
                            methodParams)

usesPortClassName = "demo.UsesPrintEnv"
usesPortType = "http://www.extreme.indiana.edu/demo/wsdl#provides"
providesPortName = "printEnvProvidesPort"

methodName = "write"
methodParams = zeros(0, Object)

print "\ncalling write\n"
cca.invokeMethodOnComponent(componentProxy, 
                            usesPortClassName, 
                            usesPortType,
			    providesPortName, 
                            methodName, 
                            methodParams)

usesPortClassName = "demo.UsesParamControl"
usesPortType = "http://www.extreme.indiana.edu/demo/wsdl#control"
providesPortName = "controlProvidesPort"

methodName = "kill"
methodParams = zeros(0, Object)

print "\nkilling component\n"
cca.invokeMethodOnComponent(componentProxy, 
                            usesPortClassName, 
                            usesPortType,
			    providesPortName, 
                            methodName, 
                            methodParams)

print "\ndone"
## comment this out if you are running from a portal
System.exit(0)