Implement Base Jython Executor function.

Change-Id: I3fb066a021de4a7b3aa1fce7f6c191bc3944fb51
Issue-ID: CCSDK-696
Signed-off-by: Muthuramalingam, Brinda Santh(bs2796) <bs2796@att.com>

9 files changed, 402 insertions, 2 deletions

diff --git a/ms/blueprintsprocessor/functions/pom.xml b/ms/blueprintsprocessor/functions/pom.xml
index 50ea7b0e7..efd550ddb 100644
--- a/ms/blueprintsprocessor/functions/pom.xml
+++ b/ms/blueprintsprocessor/functions/pom.xml
@@ -31,6 +31,7 @@
     <description>Blueprints Processor Functions POM</description>
     <modules>
         <module>resource-resolution</module>
+        <module>python-executor</module>
     </modules>
 
     <dependencies>
diff --git a/ms/blueprintsprocessor/functions/python-executor/pom.xml b/ms/blueprintsprocessor/functions/python-executor/pom.xml
new file mode 100644
index 000000000..4f9cc7458
--- /dev/null
+++ b/ms/blueprintsprocessor/functions/python-executor/pom.xml
@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright © 2017-2018 AT&T Intellectual Property.
+  ~
+  ~ 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.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>functions</artifactId>
+        <groupId>org.onap.ccsdk.apps.blueprintsprocessor</groupId>
+        <version>0.4.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.onap.ccsdk.apps.blueprintsprocessor.functions</groupId>
+    <artifactId>python-executor</artifactId>
+    <name>Blueprints Processor Function - Python Executor</name>
+    <description>Blueprints Processor Function - Python Executor</description>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.python</groupId>
+            <artifactId>jython-standalone</artifactId>
+        </dependency>
+    </dependencies>
+
+
+</project>
\ No newline at end of file
diff --git a/ms/blueprintsprocessor/functions/python-executor/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/functions/python/executor/ComponentPythonExecutor.kt b/ms/blueprintsprocessor/functions/python-executor/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/functions/python/executor/ComponentPythonExecutor.kt
new file mode 100644
index 000000000..823b13f27
--- /dev/null
+++ b/ms/blueprintsprocessor/functions/python-executor/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/functions/python/executor/ComponentPythonExecutor.kt
@@ -0,0 +1,82 @@
+/*
+ * Copyright © 2017-2018 AT&T Intellectual Property.
+ *
+ * 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.functions.python.executor
+
+import org.apache.commons.io.FilenameUtils
+import org.onap.ccsdk.apps.blueprintsprocessor.core.api.data.ExecutionServiceInput
+import org.onap.ccsdk.apps.blueprintsprocessor.functions.python.executor.utils.PythonExecutorUtils
+import org.onap.ccsdk.apps.blueprintsprocessor.services.execution.AbstractComponentFunction
+import org.onap.ccsdk.apps.controllerblueprints.core.BluePrintConstants
+import org.onap.ccsdk.apps.controllerblueprints.core.BluePrintProcessorException
+import org.onap.ccsdk.apps.controllerblueprints.core.checkNotEmptyNThrow
+import org.onap.ccsdk.apps.controllerblueprints.core.data.OperationAssignment
+import org.slf4j.LoggerFactory
+import org.springframework.stereotype.Component
+
+@Component("component-python-executor")
+class ComponentPythonExecutor(private val pythonExecutorProperty: PythonExecutorProperty) : AbstractComponentFunction() {
+
+    private val log = LoggerFactory.getLogger(ComponentPythonExecutor::class.java)
+
+    private var componentFunction: AbstractComponentFunction? = null
+
+
+    override fun process(executionServiceInput: ExecutionServiceInput) {
+
+        log.info("Processing : ${executionServiceInput.metadata}")
+        checkNotNull(bluePrintRuntimeService) { "failed to get bluePrintRuntimeService" }
+
+        val bluePrintContext = bluePrintRuntimeService!!.bluePrintContext()
+
+        val operationAssignment: OperationAssignment = bluePrintContext
+                .nodeTemplateInterfaceOperation(nodeTemplateName, interfaceName, operationName)
+
+        val blueprintBasePath: String = bluePrintRuntimeService!!.get(BluePrintConstants.PROPERTY_BLUEPRINT_BASE_PATH)?.asText()
+                ?: throw BluePrintProcessorException("python execute path is missing for node template ($nodeTemplateName)")
+
+        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($artifactName)")
+
+        val pythonClassName = FilenameUtils.getBaseName(pythonFileName)
+
+        val content: String? = bluePrintRuntimeService!!.resolveNodeTemplateArtifact(nodeTemplateName, artifactName)
+
+        checkNotEmptyNThrow(content, "artifact ($artifactName) content is empty")
+
+        val pythonPath: MutableList<String> = operationAssignment.implementation?.dependencies ?: arrayListOf()
+        pythonPath.add(blueprintBasePath)
+        pythonPath.addAll(pythonExecutorProperty.modulePaths)
+
+        val properties: MutableMap<String, Any> = hashMapOf()
+        properties["log"] = log
+
+        componentFunction = PythonExecutorUtils.getPythonComponent(pythonExecutorProperty.executionPath, pythonPath, content, pythonClassName, properties)
+
+        componentFunction!!.process(executionServiceInput)
+
+    }
+
+    override fun recover(runtimeException: RuntimeException, executionRequest: ExecutionServiceInput) {
+        componentFunction!!.recover(runtimeException, executionRequest)
+    }
+
+}
\ No newline at end of file
diff --git a/ms/blueprintsprocessor/functions/python-executor/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/functions/python/executor/PythonExecutorConfiguration.kt b/ms/blueprintsprocessor/functions/python-executor/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/functions/python/executor/PythonExecutorConfiguration.kt
new file mode 100644
index 000000000..dd80fb0ae
--- /dev/null
+++ b/ms/blueprintsprocessor/functions/python-executor/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/functions/python/executor/PythonExecutorConfiguration.kt
@@ -0,0 +1,36 @@
+/*
+ * Copyright © 2017-2018 AT&T Intellectual Property.
+ *
+ * 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.functions.python.executor
+
+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
+
+@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>
+
+}
\ No newline at end of file
diff --git a/ms/blueprintsprocessor/functions/python-executor/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/functions/python/executor/utils/PythonExecutorUtils.kt b/ms/blueprintsprocessor/functions/python-executor/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/functions/python/executor/utils/PythonExecutorUtils.kt
new file mode 100644
index 000000000..66c919d4d
--- /dev/null
+++ b/ms/blueprintsprocessor/functions/python-executor/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/functions/python/executor/utils/PythonExecutorUtils.kt
@@ -0,0 +1,77 @@
+/*
+ * Copyright © 2017-2018 AT&T Intellectual Property.
+ *
+ * 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.functions.python.executor.utils
+
+import org.onap.ccsdk.apps.blueprintsprocessor.services.execution.AbstractComponentFunction
+import org.python.core.PyObject
+import org.python.util.PythonInterpreter
+import org.slf4j.LoggerFactory
+import java.util.*
+
+class PythonExecutorUtils {
+    companion object {
+
+        private val log = LoggerFactory.getLogger(PythonExecutorUtils::class.java)
+
+        fun getPythonComponent(executePath: String, pythonPath: MutableList<String>, content: String?, interfaceName: String,
+                               properties: MutableMap<String, Any>): AbstractComponentFunction {
+
+            initPython(executePath, pythonPath, arrayListOf())
+            val pythonInterpreter = PythonInterpreter()
+
+            properties.forEach { (name, value) ->
+                pythonInterpreter.set(name, value)
+            }
+
+            pythonInterpreter.exec("import sys")
+
+            content?.let {
+                pythonInterpreter.exec(content)
+            }
+
+            val initCommand = interfaceName.plus(" = ").plus(interfaceName).plus("()")
+            pythonInterpreter.exec(initCommand)
+            val pyObject: PyObject = pythonInterpreter.get(interfaceName)
+
+            log.info("Component Object {}", pyObject)
+
+            return pyObject.__tojava__(AbstractComponentFunction::class.java) as AbstractComponentFunction
+        }
+
+        private fun initPython(executablePath: String,
+                       pythonPath: MutableList<String>, argv: MutableList<String>) {
+
+            val props = Properties()
+            // Build up the python.path
+            val sb = StringBuilder()
+            sb.append(System.getProperty("java.class.path"))
+
+            for (p in pythonPath) {
+                sb.append(":").append(p)
+            }
+            log.debug("Paths : $sb")
+
+            props["python.import.site"] = "true"
+            props.setProperty("python.path", sb.toString())
+            props.setProperty("python.verbose", "error")
+            props.setProperty("python.executable", executablePath)
+
+            PythonInterpreter.initialize(System.getProperties(), props, argv.toTypedArray())
+        }
+
+    }
+}
\ No newline at end of file
diff --git a/ms/blueprintsprocessor/functions/python-executor/src/test/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/functions/python/executor/ComponentPythonExecutorTest.kt b/ms/blueprintsprocessor/functions/python-executor/src/test/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/functions/python/executor/ComponentPythonExecutorTest.kt
new file mode 100644
index 000000000..e16f2f030
--- /dev/null
+++ b/ms/blueprintsprocessor/functions/python-executor/src/test/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/functions/python/executor/ComponentPythonExecutorTest.kt
@@ -0,0 +1,76 @@
+/*
+ * Copyright © 2017-2018 AT&T Intellectual Property.
+ *
+ * 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.functions.python.executor
+
+import com.fasterxml.jackson.databind.JsonNode
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.onap.ccsdk.apps.blueprintsprocessor.core.api.data.ActionIdentifiers
+import org.onap.ccsdk.apps.blueprintsprocessor.core.api.data.CommonHeader
+import org.onap.ccsdk.apps.blueprintsprocessor.core.api.data.ExecutionServiceInput
+import org.onap.ccsdk.apps.controllerblueprints.core.BluePrintConstants
+import org.onap.ccsdk.apps.controllerblueprints.core.putJsonElement
+import org.onap.ccsdk.apps.controllerblueprints.core.utils.BluePrintMetadataUtils
+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
+
+@RunWith(SpringRunner::class)
+@ContextConfiguration(classes = [PythonExecutorConfiguration::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 ComponentPythonExecutorTest {
+
+    @Autowired
+    lateinit var componentPythonExecutor: ComponentPythonExecutor
+
+
+    @Test
+    fun testPythonComponentInjection() {
+
+        val executionServiceInput = ExecutionServiceInput()
+        val commonHeader = CommonHeader()
+        commonHeader.requestId = "1234"
+        executionServiceInput.commonHeader = commonHeader
+
+        val actionIdentifiers = ActionIdentifiers()
+        actionIdentifiers.blueprintName = "baseconfiguration"
+        actionIdentifiers.blueprintVersion = "1.0.0"
+        actionIdentifiers.actionName = "activate"
+        executionServiceInput.actionIdentifiers = actionIdentifiers
+
+
+        val bluePrintRuntimeService = BluePrintMetadataUtils.getBluePrintRuntime(commonHeader.requestId,
+                "./../../../../components/model-catalog/blueprint-model/starter-blueprint/baseconfiguration")
+
+        componentPythonExecutor.bluePrintRuntimeService = bluePrintRuntimeService
+
+
+        val metaData: MutableMap<String, JsonNode> = hashMapOf()
+        metaData.putJsonElement(BluePrintConstants.PROPERTY_CURRENT_STEP, "resource-assignment-py")
+        metaData.putJsonElement(BluePrintConstants.PROPERTY_CURRENT_NODE_TEMPLATE, "resource-assignment-py")
+        metaData.putJsonElement(BluePrintConstants.PROPERTY_CURRENT_INTERFACE, "DefaultComponentNode")
+        metaData.putJsonElement(BluePrintConstants.PROPERTY_CURRENT_OPERATION, "process")
+        executionServiceInput.metadata = metaData
+
+        componentPythonExecutor.apply(executionServiceInput)
+
+    }
+}
\ No newline at end of file
diff --git a/ms/blueprintsprocessor/functions/python-executor/src/test/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/functions/python/executor/utils/PythonExecutorUtilsTest.kt b/ms/blueprintsprocessor/functions/python-executor/src/test/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/functions/python/executor/utils/PythonExecutorUtilsTest.kt
new file mode 100644
index 000000000..6197c4b28
--- /dev/null
+++ b/ms/blueprintsprocessor/functions/python-executor/src/test/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/functions/python/executor/utils/PythonExecutorUtilsTest.kt
@@ -0,0 +1,52 @@
+/*
+ * Copyright © 2017-2018 AT&T Intellectual Property.
+ *
+ * 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.functions.python.executor.utils
+
+import org.junit.Test
+import org.onap.ccsdk.apps.blueprintsprocessor.core.api.data.ExecutionServiceInput
+import org.onap.ccsdk.apps.controllerblueprints.core.utils.JacksonUtils
+import org.slf4j.LoggerFactory
+import kotlin.test.assertNotNull
+
+
+class PythonExecutorUtilsTest {
+
+    private val log = LoggerFactory.getLogger(PythonExecutorUtils::class.java)
+
+    @Test
+    fun testGetPythonComponent() {
+
+        val pythonPath: MutableList<String> = arrayListOf()
+        pythonPath.add("./../../../../components/scripts/python/ccsdk_blueprints")
+
+        val properties: MutableMap<String, Any> = hashMapOf()
+        properties["logger"] = log
+
+        val content = JacksonUtils.getContent("./../../../../components/scripts/python/ccsdk_blueprints/sample_blueprint_component.py")
+
+        val abstractComponentFunction = PythonExecutorUtils.getPythonComponent("/home/brindasanth/onap/apps/components/scripts/python/ccsdk_blueprints", pythonPath, content,
+                "SampleBlueprintComponent", properties)
+
+        assertNotNull(abstractComponentFunction, "failed to get python component")
+
+        abstractComponentFunction.process(ExecutionServiceInput())
+
+    }
+
+
+}
+
diff --git a/ms/blueprintsprocessor/functions/python-executor/src/test/resources/logback-test.xml b/ms/blueprintsprocessor/functions/python-executor/src/test/resources/logback-test.xml
new file mode 100644
index 000000000..a816a06c5
--- /dev/null
+++ b/ms/blueprintsprocessor/functions/python-executor/src/test/resources/logback-test.xml
@@ -0,0 +1,35 @@
+<!--

+  ~ Copyright © 2017-2018 AT&T Intellectual Property.

+  ~

+  ~ 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.

+  -->

+

+<configuration>

+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">

+        <!-- encoders are assigned the type

+             ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->

+        <encoder>

+            <pattern>%d{HH:mm:ss.SSS} %-5level %logger{100} - %msg%n</pattern>

+        </encoder>

+    </appender>

+

+

+    <logger name="org.springframework" level="warn"/>

+    <logger name="org.hibernate" level="info"/>

+    <logger name="org.onap.ccsdk.apps.blueprintsprocessor" level="info"/>

+

+    <root level="warn">

+        <appender-ref ref="STDOUT"/>

+    </root>

+

+</configuration>

diff --git a/ms/blueprintsprocessor/functions/resource-resolution/pom.xml b/ms/blueprintsprocessor/functions/resource-resolution/pom.xml
index a2d3bb85e..858be70cd 100644
--- a/ms/blueprintsprocessor/functions/resource-resolution/pom.xml
+++ b/ms/blueprintsprocessor/functions/resource-resolution/pom.xml
@@ -25,7 +25,7 @@
     <groupId>org.onap.ccsdk.apps.blueprintsprocessor.functions</groupId>
     <artifactId>resource-resolution</artifactId>
     <packaging>jar</packaging>
-    <name>Blueprints Processor Resolution Service</name>
-    <description>Blueprints Processor Resolution Service</description>
+    <name>Blueprints Processor Function - Resource Resolution</name>
+    <description>Blueprints Processor Function - Resource Resolution</description>
 
 </project>