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b) Library for Component executions

To design an artifact as a component executor, we should define a Class that inherit AbstractScriptComponentFunction and override function to run actions.

Define Artifacts:

Code Block

language	py
title	Define a Python Artifact
linenumbers	true

from org.onap.ccsdk.cds.blueprintsprocessor.services.execution import AbstractScriptComponentFunction 

class someArtifact(AbstractScriptComponentFunction):

Code Block

language	java
title	Define a Kotlin Artifact
linenumbers	true

import org.onap.ccsdk.cds.blueprintsprocessor.services.execution.AbstractScriptComponentFunction

open class SampleScriptArtifact : AbstractScriptComponentFunction() {

}

Implement your Artifact:

An artifact need to implement at least 2 functions in order to be valid:

Code Block

language	py
title	Implement component process
linenumbers	true

def process(self, resource_assignment):        
        try:
            ######################### Component action here ########################
            #Do action here
            ########################### End ##########################
			
        except JavaException, err:
          log.error("Java Exception in the script {}", err)
        except Exception, err:
          log.error("Python Exception in the script {}", err)
        return None

Code Block

language	py
title	Implement component recover
linenumbers	true

    def recover(self, runtime_exception, resource_assignment):
        log.error("Exception in the script {}", runtime_exception)
        print self.addError(runtime_exception.cause.message)
        return None

Functions available in Artifact script

The main library available while running a Component in CDS is the BlueprintRuntimeService. This provides to the user the Blueprint running context and run-time execution functions.The following shows functions available for all the different Components execution from a python script:

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