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Diffstat (limited to 'core/src/main/java/org/onap/policy/apex/core/engine/executor/context/AxTaskFacade.java')
| -rw-r--r-- | core/src/main/java/org/onap/policy/apex/core/engine/executor/context/AxTaskFacade.java | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/core/src/main/java/org/onap/policy/apex/core/engine/executor/context/AxTaskFacade.java b/core/src/main/java/org/onap/policy/apex/core/engine/executor/context/AxTaskFacade.java new file mode 100644 index 000000000..8a310c616 --- /dev/null +++ b/core/src/main/java/org/onap/policy/apex/core/engine/executor/context/AxTaskFacade.java @@ -0,0 +1,141 @@ +/*- + * ============LICENSE_START======================================================= + * Copyright (C) 2016-2018 Ericsson. All rights reserved. + * Modifications Copyright (C) 2021 Bell Canada. All rights reserved. + * Modifications Copyright (C) 2021 AT&T Intellectual Property. 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.core.engine.executor.context; + +import lombok.AllArgsConstructor; +import org.onap.policy.apex.context.SchemaHelper; +import org.onap.policy.apex.context.impl.schema.SchemaHelperFactory; +import org.onap.policy.apex.core.engine.event.EnException; +import org.onap.policy.apex.core.engine.executor.exception.StateMachineRuntimeException; +import org.onap.policy.apex.model.eventmodel.concepts.AxField; +import org.onap.policy.apex.model.policymodel.concepts.AxTask; +import org.slf4j.ext.XLogger; +import org.slf4j.ext.XLoggerFactory; + +/** + * The Class AxTaskFacade acts as a facade into the AxTask class so that task logic can easily + * access information in an AxTask instance. + * + * @author Sven van der Meer (sven.van.der.meer@ericsson.com) + */ +@AllArgsConstructor +public class AxTaskFacade { + // Logger for this class + private static final XLogger LOGGER = XLoggerFactory.getXLogger(AxTaskFacade.class); + + // CHECKSTYLE:OFF: checkstyle:visibilityModifier Logic has access to this field + + /** + * The full definition of the task we are presenting a facade to, executing logic has full + * access to the task definition. + */ + public final AxTask task; + + // CHECKSTYLE:ON: checkstyle:visibilityModifier + + /** + * Gets the name of the task. + * + * @return the task name + */ + public String getTaskName() { + return task.getKey().getName(); + } + + /** + * Gets the task ID. + * + * @return the task ID + */ + public String getId() { + return task.getId(); + } + + /** + * Creates a schema helper for an incoming field of this task. + * + * @param fieldName The name of the field to get a schema helper for + * @return the schema helper for this field + */ + public SchemaHelper getInFieldSchemaHelper(final String fieldName) { + // Find the field for the field name + return getFieldSchemaHelper(fieldName, task.getInputEvent().getParameterMap().get(fieldName), "incoming"); + } + + /** + * Creates a schema helper for an outgoing field of this task. + * This method can be used only when there is a single event output as part of a task + * + * @param fieldName The name of the field to get a schema helper for + * @return the schema helper for this field + */ + public SchemaHelper getOutFieldSchemaHelper(final String fieldName) { + // Find the field for the field name + return getFieldSchemaHelper(fieldName, + task.getOutputEvents().values().iterator().next().getParameterMap().get(fieldName), "outgoing"); + } + + /** + * Creates a schema helper for an outgoing field of this task. + * This method can be used when there are multiple event outputs from a task + * + * @param eventName the name of the event to which the field belongs to + * @param fieldName The name of the field to get a schema helper for + * @return the schema helper for this field + */ + public SchemaHelper getOutFieldSchemaHelper(final String eventName, final String fieldName) { + // Find the field for the field name + return getFieldSchemaHelper(fieldName, task.getOutputEvents().get(eventName).getParameterMap().get(fieldName), + "outgoing"); + } + + /** + * Creates a schema helper for an incoming field of this task. + * + * @param fieldName The name of the field to get a schema helper for + * @param field the field + * @param directionString the direction string + * @return the schema helper for this field + */ + private SchemaHelper getFieldSchemaHelper(final String fieldName, final AxField field, + final String directionString) { + // Find the field for the field name + if (field == null) { + final String message = "no " + directionString + " field with name \"" + fieldName + "\" defined on task \"" + + task.getId() + "\""; + LOGGER.warn(message); + throw new StateMachineRuntimeException(message); + } + + // Get a schema helper to handle translations of fields to and from the schema + try { + return new SchemaHelperFactory().createSchemaHelper(field.getKey(), field.getSchema()); + } catch (final Exception e) { + final String message = "schema helper cannot be created for task field \"" + fieldName + "\" with key \"" + + field.getId() + "\" with schema \"" + field.getSchema() + "\""; + LOGGER.warn(message, e); + throw new EnException(message, e); + } + } + +} |