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authorramverma <ram.krishna.verma@ericsson.com>2018-06-11 11:27:47 +0100
committerramverma <ram.krishna.verma@ericsson.com>2018-06-11 17:17:24 +0100
commitd48fd41c995cca495a945da4c183a70bff765dea (patch)
tree38b803637a13c5af6afc16ff7e2b7a2c6b168fc3 /plugins/plugins-executor/plugins-executor-javascript/src
parentd0746b062ca6b85eae756db6eb6c4dead037a35a (diff)
Adding plugin-executor module to apex-pdp
Change-Id: I711eaaff3707aa6398c26f1a124fedeb1d0e11f4 Issue-ID: POLICY-862 Signed-off-by: ramverma <ram.krishna.verma@ericsson.com>
Diffstat (limited to 'plugins/plugins-executor/plugins-executor-javascript/src')
-rw-r--r--plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/JavascriptExecutorParameters.java42
-rw-r--r--plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/JavascriptStateFinalizerExecutor.java127
-rw-r--r--plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/JavascriptTaskExecutor.java139
-rw-r--r--plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/JavascriptTaskSelectExecutor.java144
-rw-r--r--plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/package-info.java30
5 files changed, 482 insertions, 0 deletions
diff --git a/plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/JavascriptExecutorParameters.java b/plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/JavascriptExecutorParameters.java
new file mode 100644
index 000000000..bbbea9308
--- /dev/null
+++ b/plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/JavascriptExecutorParameters.java
@@ -0,0 +1,42 @@
+/*-
+ * ============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=========================================================
+ */
+
+package org.onap.policy.apex.plugins.executor.javascript;
+
+import org.onap.policy.apex.core.engine.ExecutorParameters;
+
+/**
+ * This class provides executor parameters for the Javascipt Executor plugin. It specifies the classes that provide the
+ * Javascript implementations of the abstract classes {@link org.onap.policy.apex.core.engine.executor.TaskExecutor},
+ * {@link org.onap.policy.apex.core.engine.executor.TaskSelectExecutor}, and
+ * {@link org.onap.policy.apex.core.engine.executor.StateFinalizerExecutor}.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+public class JavascriptExecutorParameters extends ExecutorParameters {
+ /**
+ * Constructor that sets the abstract implementation classes.
+ */
+ public JavascriptExecutorParameters() {
+ this.setTaskExecutorPluginClass(JavascriptTaskExecutor.class.getCanonicalName());
+ this.setTaskSelectionExecutorPluginClass(JavascriptTaskSelectExecutor.class.getCanonicalName());
+ this.setStateFinalizerExecutorPluginClass(JavascriptStateFinalizerExecutor.class.getCanonicalName());
+ }
+}
diff --git a/plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/JavascriptStateFinalizerExecutor.java b/plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/JavascriptStateFinalizerExecutor.java
new file mode 100644
index 000000000..66c036375
--- /dev/null
+++ b/plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/JavascriptStateFinalizerExecutor.java
@@ -0,0 +1,127 @@
+/*-
+ * ============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=========================================================
+ */
+
+package org.onap.policy.apex.plugins.executor.javascript;
+
+import java.util.Map;
+
+import javax.script.Compilable;
+import javax.script.CompiledScript;
+import javax.script.ScriptEngine;
+import javax.script.ScriptEngineManager;
+import javax.script.ScriptException;
+
+import org.onap.policy.apex.context.ContextException;
+import org.onap.policy.apex.core.engine.executor.StateFinalizerExecutor;
+import org.onap.policy.apex.core.engine.executor.exception.StateMachineException;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
+
+/**
+ * The Class JavascriptStateFinalizerExecutor is the state finalizer executor for state finalizer logic written in
+ * Javascript It is unlikely that this is thread safe.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+public class JavascriptStateFinalizerExecutor extends StateFinalizerExecutor {
+ // Logger for this class
+ private static final XLogger LOGGER = XLoggerFactory.getXLogger(JavascriptStateFinalizerExecutor.class);
+
+ // Javascript engine
+ private ScriptEngine engine = new ScriptEngineManager().getEngineByName("JavaScript");
+ private CompiledScript compiled = null;
+
+ /**
+ * Prepares the state finalizer for processing.
+ *
+ * @throws StateMachineException thrown when a state machine execution error occurs
+ */
+ @Override
+ public void prepare() throws StateMachineException {
+ // Call generic prepare logic
+ super.prepare();
+ try {
+ compiled = ((Compilable) engine).compile(getSubject().getLogic());
+ } catch (final ScriptException e) {
+ LOGGER.error("execute: state finalizer logic failed to compile for state finalizer \""
+ + getSubject().getKey().getID() + "\"");
+ throw new StateMachineException("state finalizer logic failed to compile for state finalizer \""
+ + getSubject().getKey().getID() + "\"", e);
+ }
+ }
+
+ /**
+ * Executes the executor for the state finalizer logic in a sequential manner.
+ *
+ * @param executionID the execution ID for the current APEX policy execution
+ * @param incomingFields the incoming fields for finalisation
+ * @return The state output for the state
+ * @throws StateMachineException on an execution error
+ * @throws ContextException on context errors
+ */
+ @Override
+ public String execute(final long executionID, final Map<String, Object> incomingFields)
+ throws StateMachineException, ContextException {
+ // Do execution pre work
+ executePre(executionID, incomingFields);
+
+ // Set up the Javascript engine
+ engine.put("executor", getExecutionContext());
+
+ // Check and execute the Javascript logic
+ boolean returnValue = false;
+ try {
+ if (compiled == null) {
+ engine.eval(getSubject().getLogic());
+ } else {
+ compiled.eval(engine.getContext());
+ }
+ } catch (final ScriptException e) {
+ LOGGER.error("execute: state finalizer logic failed to run for state finalizer \""
+ + getSubject().getKey().getID() + "\"");
+ throw new StateMachineException("state finalizer logic failed to run for state finalizer \""
+ + getSubject().getKey().getID() + "\"", e);
+ }
+
+ returnValue = (boolean) engine.get("returnValue");
+
+ // Do the execution post work
+ executePost(returnValue);
+
+ // Send back the return event
+ if (returnValue) {
+ return getOutgoing();
+ } else {
+ return null;
+ }
+ }
+
+ /**
+ * Cleans up the state finalizer after processing.
+ *
+ * @throws StateMachineException thrown when a state machine execution error occurs
+ */
+ @Override
+ public void cleanUp() throws StateMachineException {
+ LOGGER.debug("cleanUp:" + getSubject().getKey().getID() + "," + getSubject().getLogicFlavour() + ","
+ + getSubject().getLogic());
+ engine = null;
+ }
+}
diff --git a/plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/JavascriptTaskExecutor.java b/plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/JavascriptTaskExecutor.java
new file mode 100644
index 000000000..80f744b5d
--- /dev/null
+++ b/plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/JavascriptTaskExecutor.java
@@ -0,0 +1,139 @@
+/*-
+ * ============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=========================================================
+ */
+
+package org.onap.policy.apex.plugins.executor.javascript;
+
+import java.util.Map;
+
+import javax.script.Compilable;
+import javax.script.CompiledScript;
+import javax.script.ScriptEngine;
+import javax.script.ScriptEngineManager;
+import javax.script.ScriptException;
+
+import org.onap.policy.apex.context.ContextException;
+import org.onap.policy.apex.core.engine.executor.TaskExecutor;
+import org.onap.policy.apex.core.engine.executor.exception.StateMachineException;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
+
+/**
+ * The Class JavascriptTaskExecutor is the task executor for task logic written in Javascript It is unlikely that this
+ * is thread safe.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+public class JavascriptTaskExecutor extends TaskExecutor {
+ // Logger for this class
+ private static final XLogger LOGGER = XLoggerFactory.getXLogger(JavascriptTaskExecutor.class);
+
+ // Javascript engine
+ private ScriptEngine engine = new ScriptEngineManager().getEngineByName("JavaScript");
+ private CompiledScript compiled = null;
+
+ /**
+ * Prepares the task for processing.
+ *
+ * @throws StateMachineException thrown when a state machine execution error occurs
+ */
+ @Override
+ public void prepare() throws StateMachineException {
+ // Call generic prepare logic
+ super.prepare();
+ try {
+ compiled = ((Compilable) engine).compile(getSubject().getTaskLogic().getLogic());
+ } catch (final ScriptException e) {
+ LOGGER.error("execute: task logic failed to compile for task \"" + getSubject().getKey().getID() + "\"");
+ throw new StateMachineException(
+ "task logic failed to compile for task \"" + getSubject().getKey().getID() + "\"", e);
+ }
+ }
+
+ /**
+ * Executes the executor for the task in a sequential manner.
+ *
+ * @param executionID the execution ID for the current APEX policy execution
+ * @param incomingFields the incoming fields
+ * @return The outgoing fields
+ * @throws StateMachineException on an execution error
+ * @throws ContextException on context errors
+ */
+ @Override
+ public Map<String, Object> execute(final long executionID, final Map<String, Object> incomingFields)
+ throws StateMachineException, ContextException {
+ // Do execution pre work
+ executePre(executionID, incomingFields);
+
+ // Set up the Javascript engine
+ engine.put("executor", getExecutionContext());
+
+ // Check and execute the Javascript logic
+ boolean returnValue = false;
+ try {
+ if (compiled == null) {
+ engine.eval(getSubject().getTaskLogic().getLogic());
+ } else {
+ compiled.eval(engine.getContext());
+ }
+ } catch (final ScriptException e) {
+ LOGGER.error("execute: task logic failed to run for task \"" + getSubject().getKey().getID() + "\"");
+ throw new StateMachineException(
+ "task logic failed to run for task \"" + getSubject().getKey().getID() + "\"", e);
+ }
+
+ try {
+ final Object ret = engine.get("returnValue");
+ if (ret == null) {
+ LOGGER.error("execute: task logic failed to set a return value for task \""
+ + getSubject().getKey().getID() + "\"");
+ throw new StateMachineException("execute: task logic failed to set a return value for task \""
+ + getSubject().getKey().getID() + "\"");
+ }
+ returnValue = (Boolean) ret;
+ } catch (NullPointerException | ClassCastException e) {
+ LOGGER.error("execute: task selection logic failed to set a correct return value for state \""
+ + getSubject().getKey().getID() + "\"", e);
+ throw new StateMachineException("execute: task selection logic failed to set a return value for state \""
+ + getSubject().getKey().getID() + "\"", e);
+ }
+
+ // Do the execution post work
+ executePost(returnValue);
+
+ // Send back the return event
+ if (returnValue) {
+ return getOutgoing();
+ } else {
+ return null;
+ }
+ }
+
+ /**
+ * Cleans up the task after processing.
+ *
+ * @throws StateMachineException thrown when a state machine execution error occurs
+ */
+ @Override
+ public void cleanUp() throws StateMachineException {
+ LOGGER.debug("cleanUp:" + getSubject().getKey().getID() + "," + getSubject().getTaskLogic().getLogicFlavour()
+ + "," + getSubject().getTaskLogic().getLogic());
+ engine = null;
+ }
+}
diff --git a/plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/JavascriptTaskSelectExecutor.java b/plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/JavascriptTaskSelectExecutor.java
new file mode 100644
index 000000000..aa9c6650f
--- /dev/null
+++ b/plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/JavascriptTaskSelectExecutor.java
@@ -0,0 +1,144 @@
+/*-
+ * ============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=========================================================
+ */
+
+package org.onap.policy.apex.plugins.executor.javascript;
+
+import javax.script.Compilable;
+import javax.script.CompiledScript;
+import javax.script.ScriptEngine;
+import javax.script.ScriptEngineManager;
+import javax.script.ScriptException;
+
+import org.onap.policy.apex.context.ContextException;
+import org.onap.policy.apex.core.engine.event.EnEvent;
+import org.onap.policy.apex.core.engine.executor.TaskSelectExecutor;
+import org.onap.policy.apex.core.engine.executor.exception.StateMachineException;
+import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
+
+/**
+ * The Class JavascriptTaskSelectExecutor is the task selection executor for task selection logic written in Javascript
+ * It is unlikely that this is thread safe.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+public class JavascriptTaskSelectExecutor extends TaskSelectExecutor {
+ // Logger for this class
+ private static final XLogger LOGGER = XLoggerFactory.getXLogger(JavascriptTaskSelectExecutor.class);
+
+ // Javascript engine
+ private ScriptEngine engine = new ScriptEngineManager().getEngineByName("JavaScript");
+ private CompiledScript compiled = null;
+
+ /**
+ * Prepares the task for processing.
+ *
+ * @throws StateMachineException thrown when a state machine execution error occurs
+ */
+ @Override
+ public void prepare() throws StateMachineException {
+ // Call generic prepare logic
+ super.prepare();
+ try {
+ compiled = ((Compilable) engine).compile(getSubject().getTaskSelectionLogic().getLogic());
+ } catch (final ScriptException e) {
+ LOGGER.error("execute: task selection logic failed to compile for state \"" + getSubject().getKey().getID()
+ + "\"");
+ throw new StateMachineException(
+ "task selection logic failed to compile for state \"" + getSubject().getKey().getID() + "\"", e);
+ }
+
+ }
+
+ /**
+ * Executes the executor for the task in a sequential manner.
+ *
+ * @param executionID the execution ID for the current APEX policy execution
+ * @param incomingEvent the incoming event
+ * @return The outgoing event
+ * @throws StateMachineException on an execution error
+ * @throws ContextException on context errors
+ */
+ @Override
+ public AxArtifactKey execute(final long executionID, final EnEvent incomingEvent)
+ throws StateMachineException, ContextException {
+ // Do execution pre work
+ executePre(executionID, incomingEvent);
+
+ // Set up the Javascript engine
+ engine.put("executor", getExecutionContext());
+
+ // Check and execute the Javascript logic
+ boolean returnValue = false;
+ try {
+ if (compiled == null) {
+ engine.eval(getSubject().getTaskSelectionLogic().getLogic());
+ } else {
+ compiled.eval(engine.getContext());
+ }
+ } catch (final ScriptException e) {
+ LOGGER.error(
+ "execute: task selection logic failed to run for state \"" + getSubject().getKey().getID() + "\"");
+ throw new StateMachineException(
+ "task selection logic failed to run for state \"" + getSubject().getKey().getID() + "\"", e);
+ }
+
+ try {
+ final Object ret = engine.get("returnValue");
+ if (ret == null) {
+ LOGGER.error("execute: task selection logic failed to set a return value for state \""
+ + getSubject().getKey().getID() + "\"");
+ throw new StateMachineException(
+ "execute: task selection logic failed to set a return value for state \""
+ + getSubject().getKey().getID() + "\"");
+ }
+ returnValue = (Boolean) ret;
+ } catch (NullPointerException | ClassCastException e) {
+ LOGGER.error("execute: task selection logic failed to set a correct return value for state \""
+ + getSubject().getKey().getID() + "\"", e);
+ throw new StateMachineException("execute: task selection logic failed to set a return value for state \""
+ + getSubject().getKey().getID() + "\"", e);
+ }
+
+ // Do the execution post work
+ executePost(returnValue);
+
+ // Send back the return event
+ if (returnValue) {
+ return getOutgoing();
+ } else {
+ return null;
+ }
+ }
+
+ /**
+ * Cleans up the task after processing.
+ *
+ * @throws StateMachineException thrown when a state machine execution error occurs
+ */
+ @Override
+ public void cleanUp() throws StateMachineException {
+ LOGGER.debug("cleanUp:" + getSubject().getKey().getID() + ","
+ + getSubject().getTaskSelectionLogic().getLogicFlavour() + ","
+ + getSubject().getTaskSelectionLogic().getLogic());
+ engine = null;
+ }
+}
diff --git a/plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/package-info.java b/plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/package-info.java
new file mode 100644
index 000000000..7f7ba3918
--- /dev/null
+++ b/plugins/plugins-executor/plugins-executor-javascript/src/main/java/org/onap/policy/apex/plugins/executor/javascript/package-info.java
@@ -0,0 +1,30 @@
+/*-
+ * ============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=========================================================
+ */
+
+/**
+ * Implements the Javascript executor plugin for APEX, providing extensions of the abstract classes
+ * {@link org.onap.policy.apex.core.engine.executor.TaskExecutor},
+ * {@link org.onap.policy.apex.core.engine.executor.TaskSelectExecutor}, and
+ * {@link org.onap.policy.apex.core.engine.executor.StateFinalizerExecutor}.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+
+package org.onap.policy.apex.plugins.executor.javascript;