Add component function scripting service

Change-Id: I7c5b49617823dd623566fb4be4d431012420e17c
Issue-ID: CCSDK-959
Signed-off-by: Muthuramalingam, Brinda Santh <brindasanth@in.ibm.com>

10 files changed, 462 insertions, 15 deletions

diff --git a/ms/blueprintsprocessor/modules/commons/rest-lib/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/rest/BluePrintRestLibConfiguration.kt b/ms/blueprintsprocessor/modules/commons/rest-lib/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/rest/BluePrintRestLibConfiguration.kt
index 50d69aee..f63e39f3 100644
--- a/ms/blueprintsprocessor/modules/commons/rest-lib/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/rest/BluePrintRestLibConfiguration.kt
+++ b/ms/blueprintsprocessor/modules/commons/rest-lib/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/rest/BluePrintRestLibConfiguration.kt
@@ -1,5 +1,6 @@
 /*
  * Copyright © 2017-2018 AT&T Intellectual Property.
+ * Modifications Copyright © 2019 IBM.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -28,6 +29,7 @@ open class BluePrintRestLibConfiguration
 
 class RestLibConstants {
     companion object {
+        const val SERVICE_BLUEPRINT_REST_LIB_PROPERTY = "blueprint-rest-lib-property-service"
         const val TYPE_BASIC_AUTH = "basic-auth"
         const val TYPE_SSL_BASIC_AUTH = "ssl-basic-auth"
         const val TYPE_DME2_PROXY = "dme2-proxy"
diff --git a/ms/blueprintsprocessor/modules/commons/rest-lib/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/rest/service/BluePrintRestLibPropertyService.kt b/ms/blueprintsprocessor/modules/commons/rest-lib/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/rest/service/BluePrintRestLibPropertyService.kt
index 21d080d5..47577b39 100644
--- a/ms/blueprintsprocessor/modules/commons/rest-lib/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/rest/service/BluePrintRestLibPropertyService.kt
+++ b/ms/blueprintsprocessor/modules/commons/rest-lib/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/rest/service/BluePrintRestLibPropertyService.kt
@@ -1,5 +1,6 @@
 /*
  * Copyright © 2017-2018 AT&T Intellectual Property.
+ * Modifications Copyright © 2019 IBM.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,7 +22,7 @@ import org.onap.ccsdk.apps.blueprintsprocessor.rest.*
 import org.onap.ccsdk.apps.controllerblueprints.core.BluePrintProcessorException
 import org.springframework.stereotype.Service
 
-@Service
+@Service(RestLibConstants.SERVICE_BLUEPRINT_REST_LIB_PROPERTY)
 open class BluePrintRestLibPropertyService(private var bluePrintProperties: BluePrintProperties) {
 
     @Throws(BluePrintProcessorException::class)
@@ -49,22 +50,31 @@ open class BluePrintRestLibPropertyService(private var bluePrintProperties: Blue
     @Throws(BluePrintProcessorException::class)
     fun blueprintWebClientService(selector: String): BlueprintWebClientService {
         val prefix = "blueprintsprocessor.restclient.$selector"
-        val beanProperties = restClientProperties(prefix)
-        when (beanProperties) {
+        val restClientProperties = restClientProperties(prefix)
+        return blueprintWebClientService(restClientProperties)
+    }
+
+
+    fun blueprintDynamicWebClientService(sourceType: String, selector: String): BlueprintWebClientService {
+        TODO()
+    }
+
+    @Throws(BluePrintProcessorException::class)
+    fun blueprintWebClientService(restClientProperties: RestClientProperties): BlueprintWebClientService {
+        when (restClientProperties) {
             is BasicAuthRestClientProperties -> {
-                return BasicAuthRestClientService(beanProperties)
+                return BasicAuthRestClientService(restClientProperties)
             }
             is SSLBasicAuthRestClientProperties -> {
-                return SSLBasicAuthRestClientService(beanProperties)
+                return SSLBasicAuthRestClientService(restClientProperties)
             }
             is DME2RestClientProperties -> {
-                return DME2ProxyRestClientService(beanProperties)
+                return DME2ProxyRestClientService(restClientProperties)
             }
             else -> {
-                throw BluePrintProcessorException("couldn't get rest service for selector($selector)")
+                throw BluePrintProcessorException("couldn't get rest service for")
             }
         }
-
     }
 
     fun basicAuthRestClientProperties(prefix: String): BasicAuthRestClientProperties {
diff --git a/ms/blueprintsprocessor/modules/services/execution-service/pom.xml b/ms/blueprintsprocessor/modules/services/execution-service/pom.xml
index ea5f31a3..283a8a66 100644
--- a/ms/blueprintsprocessor/modules/services/execution-service/pom.xml
+++ b/ms/blueprintsprocessor/modules/services/execution-service/pom.xml
@@ -30,6 +30,10 @@
 
     <dependencies>
         <dependency>
+            <groupId>org.python</groupId>
+            <artifactId>jython-standalone</artifactId>
+        </dependency>
+        <dependency>
             <groupId>org.onap.ccsdk.apps.controllerblueprints</groupId>
             <artifactId>blueprint-core</artifactId>
         </dependency>
diff --git a/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/AbstractComponentFunction.kt b/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/AbstractComponentFunction.kt
index f7c901df..930dc074 100644
--- a/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/AbstractComponentFunction.kt
+++ b/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/AbstractComponentFunction.kt
@@ -1,5 +1,6 @@
 /*

  *  Copyright © 2017-2018 AT&T Intellectual Property.

+ *  Modifications Copyright © 2019 IBM.

  *

  *  Licensed under the Apache License, Version 2.0 (the "License");

  *  you may not use this file except in compliance with the License.

@@ -48,22 +49,26 @@ abstract class AbstractComponentFunction : BlueprintFunctionNode<ExecutionServic
     lateinit var operationName: String

     lateinit var nodeTemplateName: String

     var operationInputs: MutableMap<String, JsonNode> = hashMapOf()

+    /**

+     * Store Dynamic Dependency Instances

+     */

+    var functionDependencyInstances: MutableMap<String, Any> = hashMapOf()

 

     override fun getName(): String {

         return stepName

     }

 

-    override fun prepareRequest(executionRequest: ExecutionServiceInput): ExecutionServiceInput {
+    override fun prepareRequest(executionRequest: ExecutionServiceInput): ExecutionServiceInput {

         checkNotNull(bluePrintRuntimeService) { "failed to prepare blueprint runtime" }

 

         check(stepName.isNotEmpty()) { "failed to assign step name" }

 

-        this.executionServiceInput = executionRequest
+        this.executionServiceInput = executionRequest

 

-        processId = executionRequest.commonHeader.requestId
+        processId = executionRequest.commonHeader.requestId

         check(processId.isNotEmpty()) { "couldn't get process id for step($stepName)" }

 

-        workflowName = executionRequest.actionIdentifiers.actionName
+        workflowName = executionRequest.actionIdentifiers.actionName

         check(workflowName.isNotEmpty()) { "couldn't get action name for step($stepName)" }

 

         log.info("preparing request id($processId) for workflow($workflowName) step($stepName)")

@@ -88,14 +93,14 @@ abstract class AbstractComponentFunction : BlueprintFunctionNode<ExecutionServic
 

         this.operationInputs.putAll(operationResolvedProperties)

 

-        return executionRequest
+        return executionRequest

     }

 

     override fun prepareResponse(): ExecutionServiceOutput {

         log.info("Preparing Response...")

         executionServiceOutput.commonHeader = executionServiceInput.commonHeader

-        executionServiceOutput.actionIdentifiers = executionServiceInput.actionIdentifiers
-        executionServiceOutput.payload = executionServiceInput.payload
+        executionServiceOutput.actionIdentifiers = executionServiceInput.actionIdentifiers

+        executionServiceOutput.payload = executionServiceInput.payload

 

         // Resolve the Output Expression

         val stepOutputs = bluePrintRuntimeService

@@ -126,4 +131,12 @@ abstract class AbstractComponentFunction : BlueprintFunctionNode<ExecutionServic
     fun setAttribute(key: String, value: JsonNode) {

         bluePrintRuntimeService.setNodeTemplateAttributeValue(nodeTemplateName, key, value)

     }

+

+    /**

+     * This will be called from the scripts to serve instance from runtime to scripts.

+     */

+    open fun <T> functionDependencyInstanceAsType(name: String): T {

+        return functionDependencyInstances[name] as? T

+                ?: throw BluePrintProcessorException("couldn't get script property instance ($name)")

+    }

 }
\ No newline at end of file
diff --git a/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/ComponentFunctionScriptingService.kt b/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/ComponentFunctionScriptingService.kt
new file mode 100644
index 00000000..ecdd454e
--- /dev/null
+++ b/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/ComponentFunctionScriptingService.kt
@@ -0,0 +1,77 @@
+/*
+ *  Copyright © 2018 IBM.
+ *
+ *  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.
+ */
+
+package org.onap.ccsdk.apps.blueprintsprocessor.services.execution
+
+import org.onap.ccsdk.apps.blueprintsprocessor.services.execution.scripts.BlueprintJythonService
+import org.onap.ccsdk.apps.controllerblueprints.core.BluePrintConstants
+import org.onap.ccsdk.apps.controllerblueprints.core.BluePrintProcessorException
+import org.onap.ccsdk.apps.controllerblueprints.core.interfaces.BluePrintScriptsService
+import org.onap.ccsdk.apps.controllerblueprints.core.service.BluePrintContext
+import org.slf4j.LoggerFactory
+import org.springframework.context.ApplicationContext
+import org.springframework.stereotype.Service
+
+@Service
+class ComponentFunctionScriptingService(private val applicationContext: ApplicationContext,
+                                        private val bluePrintScriptsService: BluePrintScriptsService,
+                                        private val blueprintJythonService: BlueprintJythonService) {
+
+    private val log = LoggerFactory.getLogger(ComponentFunctionScriptingService::class.java)
+
+    fun <T : AbstractComponentFunction> scriptInstance(componentFunction: AbstractComponentFunction, scriptType: String,
+                                                       scriptClassReference: String,
+                                                       instanceDependencies: MutableList<String>): T {
+        log.info("creating component function of script type($scriptType), reference name($scriptClassReference) and " +
+                "instanceDependencies($instanceDependencies)")
+
+        val scriptComponent: T = scriptInstance(componentFunction.bluePrintRuntimeService.bluePrintContext(),
+                scriptType, scriptClassReference)
+        populateScriptDependencies(scriptComponent, instanceDependencies)
+        return scriptComponent
+    }
+
+
+    fun <T : AbstractComponentFunction> scriptInstance(bluePrintContext: BluePrintContext, scriptType: String,
+                                                       scriptClassReference: String): T {
+        var scriptComponent: T? = null
+
+        when (scriptType) {
+            BluePrintConstants.SCRIPT_INTERNAL -> {
+                scriptComponent = bluePrintScriptsService.scriptInstance<T>(scriptClassReference)
+            }
+            BluePrintConstants.SCRIPT_KOTLIN -> {
+                scriptComponent = bluePrintScriptsService.scriptInstance<T>(bluePrintContext, scriptClassReference, false)
+            }
+            BluePrintConstants.SCRIPT_JYTHON -> {
+                scriptComponent = blueprintJythonService.jythonComponentInstance(bluePrintContext, scriptClassReference) as T
+            }
+            else -> {
+                throw BluePrintProcessorException("script type($scriptType) is not supported")
+            }
+        }
+        return scriptComponent
+    }
+
+
+    private fun populateScriptDependencies(componentFunction: AbstractComponentFunction,
+                                   instanceDependencies: MutableList<String>) {
+        instanceDependencies.forEach { instanceDependency ->
+            componentFunction.functionDependencyInstances[instanceDependency] = applicationContext
+                    .getBean(instanceDependency)
+        }
+    }
+}
\ No newline at end of file
diff --git a/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/scripts/BlueprintJythonService.kt b/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/scripts/BlueprintJythonService.kt
new file mode 100644
index 00000000..9c039016
--- /dev/null
+++ b/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/scripts/BlueprintJythonService.kt
@@ -0,0 +1,130 @@
+/*
+ * Copyright © 2019 IBM, Bell Canada.
+ *
+ * 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.
+ */
+package org.onap.ccsdk.apps.blueprintsprocessor.services.execution.scripts
+
+import com.fasterxml.jackson.databind.JsonNode
+import com.fasterxml.jackson.databind.node.ArrayNode
+import org.apache.commons.io.FilenameUtils
+import org.onap.ccsdk.apps.blueprintsprocessor.services.execution.AbstractComponentFunction
+import org.onap.ccsdk.apps.controllerblueprints.core.BluePrintProcessorException
+import org.onap.ccsdk.apps.controllerblueprints.core.checkNotEmptyOrThrow
+import org.onap.ccsdk.apps.controllerblueprints.core.data.OperationAssignment
+import org.onap.ccsdk.apps.controllerblueprints.core.service.BluePrintContext
+import org.onap.ccsdk.apps.controllerblueprints.core.utils.JacksonUtils
+import org.slf4j.Logger
+import org.slf4j.LoggerFactory
+import org.springframework.context.ApplicationContext
+import org.springframework.stereotype.Service
+import java.io.File
+
+@Service
+class BlueprintJythonService(val pythonExecutorProperty: PythonExecutorProperty,
+                             private val applicationContext: ApplicationContext) {
+
+    val log: Logger = LoggerFactory.getLogger(BlueprintJythonService::class.java)
+
+    inline fun <reified T> jythonInstance(blueprintContext: BluePrintContext, pythonClassName: String, content: String,
+                                          dependencyInstanceNames: MutableMap<String, Any>?): T {
+
+        val blueprintBasePath: String = blueprintContext.rootPath
+        val pythonPath: MutableList<String> = arrayListOf()
+        pythonPath.add(blueprintBasePath)
+        pythonPath.addAll(pythonExecutorProperty.modulePaths)
+
+        val blueprintPythonConfigurations = BluePrintPython(pythonExecutorProperty.executionPath, pythonPath, arrayListOf())
+
+        val blueprintPythonHost = BlueprintPythonHost(blueprintPythonConfigurations)
+        val pyObject = blueprintPythonHost.getPythonComponent(content, pythonClassName, dependencyInstanceNames)
+
+        log.info("Component Object {}", pyObject)
+
+        return pyObject.__tojava__(T::class.java) as T
+    }
+
+    fun jythonComponentInstance(bluePrintContext: BluePrintContext, scriptClassReference: String):
+            AbstractComponentFunction {
+        val blueprintBasePath: String = bluePrintContext.rootPath
+
+        val pythonFileName = bluePrintContext.rootPath
+                .plus(File.separator)
+                .plus(scriptClassReference)
+
+        val pythonClassName = FilenameUtils.getBaseName(pythonFileName)
+        log.info("Getting Jython Script Class($pythonClassName)")
+
+        val content: String = JacksonUtils.getContent(pythonFileName)
+
+        val pythonPath: MutableList<String> = arrayListOf()
+        pythonPath.add(blueprintBasePath)
+        pythonPath.addAll(pythonExecutorProperty.modulePaths)
+
+        val jythonInstances: MutableMap<String, Any> = hashMapOf()
+        jythonInstances["log"] = LoggerFactory.getLogger(pythonClassName)
+
+        return jythonInstance<AbstractComponentFunction>(bluePrintContext, pythonClassName,
+                content, jythonInstances)
+    }
+
+    fun jythonComponentInstance(abstractComponentFunction: AbstractComponentFunction): AbstractComponentFunction {
+
+        val bluePrintRuntimeService = abstractComponentFunction.bluePrintRuntimeService
+        val bluePrintContext = bluePrintRuntimeService.bluePrintContext()
+        val nodeTemplateName: String = abstractComponentFunction.nodeTemplateName
+        val operationInputs: MutableMap<String, JsonNode> = abstractComponentFunction.operationInputs
+
+        val operationAssignment: OperationAssignment = bluePrintContext
+                .nodeTemplateInterfaceOperation(abstractComponentFunction.nodeTemplateName,
+                        abstractComponentFunction.interfaceName, abstractComponentFunction.operationName)
+
+        val blueprintBasePath: String = bluePrintContext.rootPath
+
+        val artifactName: String = operationAssignment.implementation?.primary
+                ?: throw BluePrintProcessorException("missing primary field to get artifact name for node template ($nodeTemplateName)")
+
+        val artifactDefinition = bluePrintRuntimeService.resolveNodeTemplateArtifactDefinition(nodeTemplateName, artifactName)
+
+        val pythonFileName = artifactDefinition.file
+                ?: throw BluePrintProcessorException("missing file name for node template ($nodeTemplateName)'s artifactName($artifactName)")
+
+        val pythonClassName = FilenameUtils.getBaseName(pythonFileName)
+        log.info("Getting Jython Script Class($pythonClassName)")
+
+        val content: String? = bluePrintRuntimeService.resolveNodeTemplateArtifact(nodeTemplateName, artifactName)
+
+        checkNotEmptyOrThrow(content, "artifact ($artifactName) content is empty")
+
+        val pythonPath: MutableList<String> = operationAssignment.implementation?.dependencies ?: arrayListOf()
+        pythonPath.add(blueprintBasePath)
+        pythonPath.addAll(pythonExecutorProperty.modulePaths)
+
+        val jythonInstances: MutableMap<String, Any> = hashMapOf()
+        jythonInstances["log"] = LoggerFactory.getLogger(nodeTemplateName)
+
+        val instanceDependenciesNode: ArrayNode = operationInputs[PythonExecutorConstants.INPUT_INSTANCE_DEPENDENCIES] as? ArrayNode
+                ?: throw BluePrintProcessorException("Failed to get property(${PythonExecutorConstants.INPUT_INSTANCE_DEPENDENCIES})")
+
+        instanceDependenciesNode.forEach { instanceName ->
+            jythonInstances[instanceName.textValue()] = applicationContext.getBean(instanceName.textValue())
+        }
+
+        val scriptComponentFunction = jythonInstance<AbstractComponentFunction>(bluePrintContext, pythonClassName,
+                content!!, jythonInstances)
+
+        return scriptComponentFunction
+
+    }
+
+}
\ No newline at end of file
diff --git a/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/scripts/BlueprintPythonHost.kt b/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/scripts/BlueprintPythonHost.kt
new file mode 100644
index 00000000..e5b248b6
--- /dev/null
+++ b/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/scripts/BlueprintPythonHost.kt
@@ -0,0 +1,46 @@
+/*
+ * Copyright © 2019 IBM, Bell Canada.
+ *
+ * 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.
+ */
+package org.onap.ccsdk.apps.blueprintsprocessor.services.execution.scripts
+
+import org.python.core.PyObject
+import org.python.util.PythonInterpreter
+
+open class BlueprintPythonHost(private val bluePrintPython: BluePrintPython){
+    private val blueprintPythonInterpreterProxy: BlueprintPythonInterpreterProxy
+
+    init {
+        PythonInterpreter.initialize(System.getProperties(), bluePrintPython.props, bluePrintPython.argv.toTypedArray())
+        blueprintPythonInterpreterProxy = BlueprintPythonInterpreterProxy(bluePrintPython)
+    }
+
+    /**
+     * getPythonComponent Purpose: execute the python script and return the python interpreter object
+     *
+     * @param content String
+     * @param interfaceName String
+     * @param properties MutableMap<String, Any>
+     * @return pyObject PyObject
+     */
+    fun getPythonComponent(content: String?, interfaceName: String, properties: MutableMap<String, Any>?): PyObject {
+        bluePrintPython.content = content!!
+        bluePrintPython.pythonClassName = interfaceName
+        bluePrintPython.moduleName = "Blueprint Python Script [Class Name = $interfaceName]"
+
+        return blueprintPythonInterpreterProxy.getPythonInstance(properties)
+    }
+
+    //TODO Check potential errors in python scripts
+}
\ No newline at end of file
diff --git a/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/scripts/BlueprintPythonInterpreterProxy.kt b/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/scripts/BlueprintPythonInterpreterProxy.kt
new file mode 100644
index 00000000..735b8d77
--- /dev/null
+++ b/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/scripts/BlueprintPythonInterpreterProxy.kt
@@ -0,0 +1,40 @@
+/*
+ * Copyright © 2019 IBM, Bell Canada.
+ *
+ * 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.
+ */
+package org.onap.ccsdk.apps.blueprintsprocessor.services.execution.scripts
+
+import org.python.core.PyObject
+import org.python.util.PythonInterpreter
+
+open class BlueprintPythonInterpreterProxy(private val bluePrintPython: BluePrintPython): PythonInterpreter(){
+
+    fun getPythonInstance(properties: MutableMap<String, Any>?): PyObject{
+        properties?.forEach { (name, value) ->
+            this.set(name, value)
+        }
+
+        this.exec("import sys")
+
+        bluePrintPython.content.let {
+            this.exec(bluePrintPython.content)
+        }
+
+        val initCommand = bluePrintPython.pythonClassName.plus(" = ").plus(
+                                                        bluePrintPython.pythonClassName).plus("()")
+        this.exec(initCommand)
+
+        return this.get(bluePrintPython.pythonClassName)
+    }
+}
\ No newline at end of file
diff --git a/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/scripts/PythonExecutorConfiguration.kt b/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/scripts/PythonExecutorConfiguration.kt
new file mode 100644
index 00000000..fa3e3a13
--- /dev/null
+++ b/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/scripts/PythonExecutorConfiguration.kt
@@ -0,0 +1,68 @@
+/*
+ * Copyright © 2017-2018 AT&T Intellectual Property.
+ *
+ * Modifications Copyright © 2019 IBM, Bell Canada.
+ *
+ * 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.
+ */
+
+package org.onap.ccsdk.apps.blueprintsprocessor.services.execution.scripts
+
+import org.springframework.beans.factory.annotation.Value
+import org.springframework.boot.context.properties.EnableConfigurationProperties
+import org.springframework.context.annotation.ComponentScan
+import org.springframework.context.annotation.Configuration
+import java.io.File
+import java.util.*
+
+@Configuration
+@ComponentScan
+@EnableConfigurationProperties
+open class PythonExecutorConfiguration
+
+@Configuration
+open class PythonExecutorProperty {
+    @Value("\${blueprints.processor.functions.python.executor.executionPath}")
+    lateinit var executionPath: String
+    @Value("#{'\${blueprints.processor.functions.python.executor.modulePaths}'.split(',')}")
+    lateinit var modulePaths: List<String>
+}
+
+class PythonExecutorConstants {
+    companion object {
+        const val INPUT_INSTANCE_DEPENDENCIES = "instance-dependencies"
+    }
+}
+
+open class BluePrintPython(executablePath: String, blueprintPythonPlatform: MutableList<String>,
+                           val argv: MutableList<String>){
+    lateinit var moduleName: String
+    lateinit var pythonClassName: String
+    lateinit var content: String
+    var props: Properties = Properties()
+
+    init {
+        // Build up the python.path
+        val sb = StringBuilder()
+        sb.append(System.getProperty("java.class.path"))
+
+        for (p in blueprintPythonPlatform) {
+            sb.append(File.pathSeparator).append(p)
+        }
+
+        props["python.import.site"] = "true"
+        props.setProperty("python.path", sb.toString())
+        props.setProperty("python.verbose", "error")
+        props.setProperty("python.executable", executablePath)
+    }
+}
\ No newline at end of file
diff --git a/ms/blueprintsprocessor/modules/services/execution-service/src/test/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/scripts/BlueprintJythonServiceTest.kt b/ms/blueprintsprocessor/modules/services/execution-service/src/test/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/scripts/BlueprintJythonServiceTest.kt
new file mode 100644
index 00000000..b48a10e9
--- /dev/null
+++ b/ms/blueprintsprocessor/modules/services/execution-service/src/test/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/services/execution/scripts/BlueprintJythonServiceTest.kt
@@ -0,0 +1,57 @@
+/*
+ * Copyright © 2019 IBM, Bell Canada.
+ *
+ * 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.
+ */
+package org.onap.ccsdk.apps.blueprintsprocessor.services.execution.scripts
+
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.onap.ccsdk.apps.blueprintsprocessor.core.api.data.ExecutionServiceInput
+import org.onap.ccsdk.apps.blueprintsprocessor.services.execution.AbstractComponentFunction
+import org.onap.ccsdk.apps.controllerblueprints.core.utils.BluePrintMetadataUtils
+import org.onap.ccsdk.apps.controllerblueprints.core.utils.JacksonUtils
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.test.context.ContextConfiguration
+import org.springframework.test.context.TestPropertySource
+import org.springframework.test.context.junit4.SpringRunner
+import kotlin.test.assertNotNull
+
+@RunWith(SpringRunner::class)
+@ContextConfiguration(classes = [BlueprintJythonService::class, PythonExecutorProperty::class])
+@TestPropertySource(properties =
+["blueprints.processor.functions.python.executor.modulePaths=./../../../../../components/scripts/python/ccsdk_blueprints",
+    "blueprints.processor.functions.python.executor.executionPath=./../../../../../components/scripts/python/ccsdk_blueprints"])
+class BlueprintJythonServiceTest {
+
+    @Autowired
+    private lateinit var blueprintJythonService: BlueprintJythonService
+
+    @Test
+    fun testGetAbstractPythonPlugin() {
+        val bluePrintContext = BluePrintMetadataUtils.getBluePrintContext(
+                "./../../../../../components/model-catalog/blueprint-model/test-blueprint/baseconfiguration")
+
+        val dependencies: MutableMap<String, Any> = hashMapOf()
+
+        val content = JacksonUtils.getContent("./../../../../." +
+                "./components/model-catalog/blueprint-model/test-blueprint/baseconfiguration/Scripts/python/SamplePythonComponentNode.py")
+
+        val abstractComponentFunction = blueprintJythonService.jythonInstance<AbstractComponentFunction>(bluePrintContext, "SamplePythonComponentNode", content, dependencies)
+
+        assertNotNull(abstractComponentFunction, "failed to get python component")
+
+        abstractComponentFunction.process(ExecutionServiceInput())
+
+    }
+}
\ No newline at end of file