diff options
Diffstat (limited to 'plugins/plugins-executor/plugins-executor-mvel/src/main')
5 files changed, 427 insertions, 0 deletions
diff --git a/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MVELExecutorParameters.java b/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MVELExecutorParameters.java new file mode 100644 index 000000000..21d124212 --- /dev/null +++ b/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MVELExecutorParameters.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.mvel; + +import org.onap.policy.apex.core.engine.ExecutorParameters; + +/** + * This class provides executor parameters for the MVEL Executor plugin. It specifies the classes that provide the MVEL + * 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 MVELExecutorParameters extends ExecutorParameters { + /** + * Constructor that sets the abstract implementation classes. + */ + public MVELExecutorParameters() { + this.setTaskExecutorPluginClass(MvelTaskExecutor.class.getCanonicalName()); + this.setTaskSelectionExecutorPluginClass(MvelTaskSelectExecutor.class.getCanonicalName()); + this.setStateFinalizerExecutorPluginClass(MvelStateFinalizerExecutor.class.getCanonicalName()); + } +} diff --git a/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelStateFinalizerExecutor.java b/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelStateFinalizerExecutor.java new file mode 100644 index 000000000..8cd76a94d --- /dev/null +++ b/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelStateFinalizerExecutor.java @@ -0,0 +1,118 @@ +/*- + * ============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.mvel; + +import static org.onap.policy.apex.model.utilities.Assertions.argumentNotNull; + +import java.io.Serializable; +import java.util.HashMap; +import java.util.Map; + +import org.mvel2.MVEL; +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 MvelStateFinalizerExecutor is the state finalizer executor for state finalizer logic written in MVEL. + * + * @author Liam Fallon (liam.fallon@ericsson.com) + */ +public class MvelStateFinalizerExecutor extends StateFinalizerExecutor { + // Logger for this class + private static final XLogger LOGGER = XLoggerFactory.getXLogger(MvelStateFinalizerExecutor.class); + + // The MVEL code + private Serializable 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(); + + // Compile the MVEL code + try { + compiled = MVEL.compileExpression(getSubject().getLogic()); + } catch (final Exception e) { + LOGGER.warn("failed to compile MVEL code for state " + getSubject().getKey().getID(), e); + throw new StateMachineException("failed to compile MVEL code for state " + 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); + + // Check and execute the MVEL logic + argumentNotNull(compiled, "MVEL state finalizer logic not compiled."); + + boolean returnValue = false; + try { + // Execute the MVEL code + returnValue = + (boolean) MVEL.executeExpression(compiled, getExecutionContext(), new HashMap<String, Object>()); + } catch (final Exception e) { + LOGGER.warn("failed to execute MVEL code for state " + getSubject().getKey().getID(), e); + throw new StateMachineException("failed to execute MVEL code 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 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()); + } +} diff --git a/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskExecutor.java b/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskExecutor.java new file mode 100644 index 000000000..8599eabac --- /dev/null +++ b/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskExecutor.java @@ -0,0 +1,117 @@ +/*- + * ============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.mvel; + +import static org.onap.policy.apex.model.utilities.Assertions.argumentNotNull; + +import java.io.Serializable; +import java.util.HashMap; +import java.util.Map; + +import org.mvel2.MVEL; +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 MvelTaskExecutor is the task executor for task logic written in MVEL. + * + * @author Liam Fallon (liam.fallon@ericsson.com) + */ +public class MvelTaskExecutor extends TaskExecutor { + // Logger for this class + private static final XLogger LOGGER = XLoggerFactory.getXLogger(MvelTaskExecutor.class); + + // The MVEL code + private Serializable 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(); + + // Compile the MVEL code + try { + compiled = MVEL.compileExpression(getSubject().getTaskLogic().getLogic()); + } catch (final Exception e) { + LOGGER.warn("failed to compile MVEL code for task " + getSubject().getKey().getID(), e); + throw new StateMachineException("failed to compile MVEL code for task " + getSubject().getKey().getID(), e); + } + argumentNotNull(compiled, "MVEL task not compiled."); + } + + /** + * 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); + + // Check and execute the MVEL logic + argumentNotNull(compiled, "MVEL task not compiled."); + boolean returnValue = false; + + try { + // Execute the MVEL code + returnValue = + (boolean) MVEL.executeExpression(compiled, getExecutionContext(), new HashMap<String, Object>()); + } catch (final Exception e) { + LOGGER.warn("failed to execute MVEL code for task " + getSubject().getKey().getID(), e); + throw new StateMachineException("failed to execute MVEL code for task " + 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()); + } +} diff --git a/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskSelectExecutor.java b/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskSelectExecutor.java new file mode 100644 index 000000000..3cb5d9bf6 --- /dev/null +++ b/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskSelectExecutor.java @@ -0,0 +1,120 @@ +/*- + * ============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.mvel; + +import static org.onap.policy.apex.model.utilities.Assertions.argumentNotNull; + +import java.io.Serializable; +import java.util.HashMap; + +import org.mvel2.MVEL; +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 MvelTaskSelectExecutor is the task selection executor for task selection logic written in MVEL. + * + * @author Liam Fallon (liam.fallon@ericsson.com) + */ +public class MvelTaskSelectExecutor extends TaskSelectExecutor { + // Logger for this class + private static final XLogger LOGGER = XLoggerFactory.getXLogger(MvelTaskSelectExecutor.class); + + // The MVEL code + private Serializable 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(); + + // Compile the MVEL code + try { + compiled = MVEL.compileExpression(getSubject().getTaskSelectionLogic().getLogic()); + } catch (final Exception e) { + LOGGER.warn("failed to compile MVEL code for state " + getSubject().getKey().getID(), e); + throw new StateMachineException("failed to compile MVEL code 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); + + // Check and execute the MVEL logic + argumentNotNull(compiled, "MVEL task not compiled."); + + boolean returnValue = false; + try { + // Execute the MVEL code + returnValue = + (boolean) MVEL.executeExpression(compiled, getExecutionContext(), new HashMap<String, Object>()); + } catch (final Exception e) { + LOGGER.warn("failed to execute MVEL code for state " + getSubject().getKey().getID(), e); + throw new StateMachineException("failed to execute MVEL code 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()); + } +} diff --git a/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/package-info.java b/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/package-info.java new file mode 100644 index 000000000..8e8ab889b --- /dev/null +++ b/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/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 MVEL executor plugin for APEX, providing extensions of the abstract classes + * {@link com.ericsson.apex.core.engine.executor.TaskExecutor}, + * {@link com.ericsson.apex.core.engine.executor.TaskSelectExecutor}, and + * {@link com.ericsson.apex.core.engine.executor.StateFinalizerExecutor}. + * + * @author Liam Fallon (liam.fallon@ericsson.com) + */ + +package org.onap.policy.apex.plugins.executor.mvel; |