POLICY-4765: Support for Context Albums across policy sets in ApexClosed

Investigation

Procedure

• Spin up docker-compose environment for testing

• Create two policies that share a context album

• Deploy both policies

• Determine is Policy A can access context modified by Policy B

Steps

• Modify DecisionMaker Policy

  • Split into two seperate policies:

    • One which contains the answer logic

    • One which contains the decision logic

  • Deploy both policies in single Apex engine

  • Policy A and Policy B will both share the AnswerAlbum Context

  • Set the answers using Policy A which contains the logic to set the answers. Policy B does not contain this logic.

  • Make a decision using Policy B. This will choose an answer from the AnswerAlbum.

Step	Description	Result

Step	Description	Result
Modify DecisionMaker Policy	Split into two seperate policies: One which contains the answer logic One which contains the decision logic Policy A & Policy B will share AnswerAlbum and LastAnswerAlbum context	DecisionMakerAnswerPolicy #------------------------------------------------------------------------------- # ============LICENSE_START======================================================= # Copyright (C) 2016-2018 Ericsson. All rights reserved. # ================================================================================ # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # # SPDX-License-Identifier: Apache-2.0 # ============LICENSE_END========================================================= #------------------------------------------------------------------------------- model create name=DecisionMakerPolicyModel schema create name=SimpleStringType flavour=Java schema=java.lang.String schema create name=SimpleIntegerType flavour=Java schema=java.lang.Integer album create name=AnswerAlbum scope=policy writable=true schemaName=SimpleStringType album create name=LastAnswerAlbum scope=policy writable=true schemaName=SimpleIntegerType event create name=AnswerEvent nameSpace=org.onap.policy.apex.domains.decisionmaker source=DCAE target=apex event parameter create name=AnswerEvent parName=a0 schemaName=SimpleStringType event parameter create name=AnswerEvent parName=a1 schemaName=SimpleStringType event parameter create name=AnswerEvent parName=a2 schemaName=SimpleStringType event parameter create name=AnswerEvent parName=a3 schemaName=SimpleStringType event parameter create name=AnswerEvent parName=a4 schemaName=SimpleStringType event parameter create name=AnswerEvent parName=a5 schemaName=SimpleStringType event parameter create name=AnswerEvent parName=a6 schemaName=SimpleStringType task create name=AnswerInitTask task inputfield create name=AnswerInitTask fieldName=a0 schemaName=SimpleStringType task inputfield create name=AnswerInitTask fieldName=a1 schemaName=SimpleStringType task inputfield create name=AnswerInitTask fieldName=a2 schemaName=SimpleStringType task inputfield create name=AnswerInitTask fieldName=a3 schemaName=SimpleStringType task inputfield create name=AnswerInitTask fieldName=a4 schemaName=SimpleStringType task inputfield create name=AnswerInitTask fieldName=a5 schemaName=SimpleStringType task inputfield create name=AnswerInitTask fieldName=a6 schemaName=SimpleStringType task outputfield create name=AnswerInitTask fieldName=a0 schemaName=SimpleStringType task outputfield create name=AnswerInitTask fieldName=a1 schemaName=SimpleStringType task outputfield create name=AnswerInitTask fieldName=a2 schemaName=SimpleStringType task outputfield create name=AnswerInitTask fieldName=a3 schemaName=SimpleStringType task outputfield create name=AnswerInitTask fieldName=a4 schemaName=SimpleStringType task outputfield create name=AnswerInitTask fieldName=a5 schemaName=SimpleStringType task outputfield create name=AnswerInitTask fieldName=a6 schemaName=SimpleStringType task contextref create name=AnswerInitTask albumName=AnswerAlbum task contextref create name=AnswerInitTask albumName=LastAnswerAlbum task logic create name=AnswerInitTask logicFlavour=JAVASCRIPT logic=LS #MACROFILE:"src/main/resources/logic/AnswerInitTask.js" LE policy create name=AnswerInitPolicy template=freestyle firstState=AnswerInitState policy state create name=AnswerInitPolicy stateName=AnswerInitState triggerName=AnswerEvent defaultTaskName=AnswerInitTask policy state output create name=AnswerInitPolicy stateName=AnswerInitState outputName=AnswerInitOutput eventName=AnswerEvent policy state taskref create name=AnswerInitPolicy stateName=AnswerInitState taskName=AnswerInitTask outputType=DIRECT outputName=AnswerInitOutput validate     DecisionMakerDecisionPolicy #------------------------------------------------------------------------------- # ============LICENSE_START======================================================= # Copyright (C) 2016-2018 Ericsson. All rights reserved. # ================================================================================ # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # # SPDX-License-Identifier: Apache-2.0 # ============LICENSE_END========================================================= #------------------------------------------------------------------------------- model create name=DecisionMakerPolicyModelTwo schema create name=SimpleStringType flavour=Java schema=java.lang.String schema create name=SimpleIntegerType flavour=Java schema=java.lang.Integer album create name=AnswerAlbum scope=policy writable=true schemaName=SimpleStringType album create name=LastAnswerAlbum scope=policy writable=true schemaName=SimpleIntegerType event create name=MakeDecisionEvent nameSpace=org.onap.policy.apex.domains.decisionmaker source=DCAE target=apex event parameter create name=MakeDecisionEvent parName=mode schemaName=SimpleStringType event create name=DecisionEvent nameSpace=org.onap.policy.apex.domains.decisionmaker source=DCAE target=apex event parameter create name=DecisionEvent parName=decision schemaName=SimpleStringType task create name=RandomAnswerTask task inputfield create name=RandomAnswerTask fieldName=mode schemaName=SimpleStringType task outputfield create name=RandomAnswerTask fieldName=decision schemaName=SimpleStringType task contextref create name=RandomAnswerTask albumName=AnswerAlbum task logic create name=RandomAnswerTask logicFlavour=JAVASCRIPT logic=LS #MACROFILE:"src/main/resources/logic/RandomAnswerTask.js" LE task create name=PessimisticAnswerTask task inputfield create name=PessimisticAnswerTask fieldName=mode schemaName=SimpleStringType task outputfield create name=PessimisticAnswerTask fieldName=decision schemaName=SimpleStringType task contextref create name=PessimisticAnswerTask albumName=AnswerAlbum task logic create name=PessimisticAnswerTask logicFlavour=JAVASCRIPT logic=LS #MACROFILE:"src/main/resources/logic/PessimisticAnswerTask.js" LE task create name=OptimisticAnswerTask task inputfield create name=OptimisticAnswerTask fieldName=mode schemaName=SimpleStringType task outputfield create name=OptimisticAnswerTask fieldName=decision schemaName=SimpleStringType task contextref create name=OptimisticAnswerTask albumName=AnswerAlbum task logic create name=OptimisticAnswerTask logicFlavour=JAVASCRIPT logic=LS #MACROFILE:"src/main/resources/logic/OptimisticAnswerTask.js" LE task create name=DitheringAnswerTask task inputfield create name=DitheringAnswerTask fieldName=mode schemaName=SimpleStringType task outputfield create name=DitheringAnswerTask fieldName=decision schemaName=SimpleStringType task contextref create name=DitheringAnswerTask albumName=AnswerAlbum task logic create name=DitheringAnswerTask logicFlavour=JAVASCRIPT logic=LS #MACROFILE:"src/main/resources/logic/DitheringAnswerTask.js" LE task create name=RoundRobinAnswerTask task inputfield create name=RoundRobinAnswerTask fieldName=mode schemaName=SimpleStringType task outputfield create name=RoundRobinAnswerTask fieldName=decision schemaName=SimpleStringType task contextref create name=RoundRobinAnswerTask albumName=AnswerAlbum task contextref create name=RoundRobinAnswerTask albumName=LastAnswerAlbum task logic create name=RoundRobinAnswerTask logicFlavour=JAVASCRIPT logic=LS #MACROFILE:"src/main/resources/logic/RoundRobinAnswerTask.js" LE policy create name=DecisionMakerPolicy template=freestyle firstState=MakeDecisionState policy state create name=DecisionMakerPolicy stateName=MakeDecisionState triggerName=MakeDecisionEvent defaultTaskName=RandomAnswerTask policy state output create name=DecisionMakerPolicy stateName=MakeDecisionState outputName=DecisionFinalOutput eventName=DecisionEvent policy state taskref create name=DecisionMakerPolicy stateName=MakeDecisionState taskName=RandomAnswerTask outputType=DIRECT outputName=DecisionFinalOutput policy state taskref create name=DecisionMakerPolicy stateName=MakeDecisionState taskName=PessimisticAnswerTask outputType=DIRECT outputName=DecisionFinalOutput policy state taskref create name=DecisionMakerPolicy stateName=MakeDecisionState taskName=OptimisticAnswerTask outputType=DIRECT outputName=DecisionFinalOutput policy state taskref create name=DecisionMakerPolicy stateName=MakeDecisionState taskName=DitheringAnswerTask outputType=DIRECT outputName=DecisionFinalOutput policy state taskref create name=DecisionMakerPolicy stateName=MakeDecisionState taskName=RoundRobinAnswerTask outputType=DIRECT outputName=DecisionFinalOutput policy state selecttasklogic create name=DecisionMakerPolicy stateName=MakeDecisionState logicFlavour=JAVASCRIPT logic=LS #MACROFILE:"src/main/resources/logic/MakeDecisionStateTSL.js" LE validate
Other Changes	Changes to config Changes to html files for testing Changes to pom to generate policies Changes to ToscaTemplate	ApexConfig.json { "engineServiceParameters": { "name": "MyApexEngine", "version": "0.0.1", "id": 45, "instanceCount": 4, "deploymentPort": 12345, "engineParameters": { "executorParameters": { "JAVASCRIPT": { "parameterClassName": "org.onap.policy.apex.plugins.executor.javascript.JavascriptExecutorParameters" } } } }, "eventInputParameters": { "RESTConsumerTwo": { "carrierTechnologyParameters": { "carrierTechnology": "RESTSERVER", "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restserver.RestServerCarrierTechnologyParameters", "parameters": { "standalone": true, "host": "0.0.0.0", "port": 23325 } }, "eventProtocolParameters": { "eventProtocol": "JSON" }, "synchronousMode": true, "synchronousPeer": "RESTProducerTwo", "synchronousTimeout": 500 } }, "eventOutputParameters": { "logProducerTwo": { "carrierTechnologyParameters": { "carrierTechnology": "FILE", "parameters": { "fileName": "/tmp/EventsOutTwo.json" } }, "eventProtocolParameters": { "eventProtocol": "JSON" } }, "RESTProducerTwo": { "carrierTechnologyParameters":{ "carrierTechnology" : "RESTSERVER", "parameterClassName" : "org.onap.policy.apex.plugins.event.carrier.restserver.RestServerCarrierTechnologyParameters" }, "eventProtocolParameters":{ "eventProtocol" : "JSON" }, "synchronousMode" : true, "synchronousPeer" : "RESTConsumerTwo", "synchronousTimeout" : 500 } } }   ToscaTemplate.json   MakeDecision_server.html   pom.xml
Deploy both policies	Deploy both policies on single Apex instance	Result
Set Answers (Policy A)	Use Policy A to set the answers	Open Logs
Make Decision (Policy B)	Use Policy B to select an answer	Open Result   Result   Result   Result

Conclusion

Apex-pdp engine is capable of sharing context across separate policy sets running in the same apex-pdp engine.

No further changes are required.