diff options
Diffstat (limited to 'policy-management/src/main/java/org/onap/policy/drools/system/Main.java')
-rw-r--r-- | policy-management/src/main/java/org/onap/policy/drools/system/Main.java | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/policy-management/src/main/java/org/onap/policy/drools/system/Main.java b/policy-management/src/main/java/org/onap/policy/drools/system/Main.java new file mode 100644 index 00000000..fe0cc01f --- /dev/null +++ b/policy-management/src/main/java/org/onap/policy/drools/system/Main.java @@ -0,0 +1,135 @@ +/*- + * ============LICENSE_START======================================================= + * policy-management + * ================================================================================ + * Copyright (C) 2017 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. + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.drools.system; + +import java.io.File; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.util.Properties; + +import org.onap.policy.drools.persistence.SystemPersistence; +import org.onap.policy.drools.utils.PropertyUtil; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Programmatic entry point to the management layer + */ +public class Main { + + /** + * logback configuration file system property + */ + public static final String LOGBACK_CONFIGURATION_FILE_SYSTEM_PROPERTY = "logback.configurationFile"; + + /** + * logback configuration file system property + */ + public static final String LOGBACK_CONFIGURATION_FILE_DEFAULT = "config/logback.xml"; + + /** + * constructor (hides public default one) + */ + private Main() {} + + /** + * main + * + * @param args program arguments + */ + public static void main(String args[]) { + + /* logging defaults */ + + if (System.getProperty(LOGBACK_CONFIGURATION_FILE_SYSTEM_PROPERTY) == null) + System.setProperty(LOGBACK_CONFIGURATION_FILE_SYSTEM_PROPERTY, LOGBACK_CONFIGURATION_FILE_DEFAULT); + + /* 0. boot */ + + PolicyEngine.manager.boot(args); + + Logger logger = LoggerFactory.getLogger(Main.class); + + File configDir = new File(SystemPersistence.CONFIG_DIR_NAME); + + if (!configDir.isDirectory()) { + throw new IllegalArgumentException + ("config directory: " + configDir.getAbsolutePath() + + " not found"); + } + + /* 1. Configure the Engine */ + + try { + Path policyEnginePath = Paths.get(configDir.toPath().toString(), SystemPersistence.PROPERTIES_FILE_ENGINE); + Properties properties = PropertyUtil.getProperties(policyEnginePath.toFile()); + PolicyEngine.manager.configure(properties); + } catch (Exception e) { + logger.warn("Main: cannot initialize {} because of {}", PolicyEngine.manager, e.getMessage(), e); + } + + /* 2. Start the Engine with the basic services only (no Policy Controllers) */ + + try { + boolean success = PolicyEngine.manager.start(); + if (!success) { + logger.warn("Main: {} has been partially started", PolicyEngine.manager); + } + } catch (IllegalStateException e) { + logger.warn("Main: cannot start {} (bad state) because of {}", PolicyEngine.manager, e.getMessage(), e); + } catch (Exception e) { + logger.warn("Main: cannot start {} because of {}", PolicyEngine.manager, e.getMessage(), e); + System.exit(1); + } + + /* 3. Create and start the controllers */ + + File[] controllerFiles = configDir.listFiles(); + for (File config : controllerFiles) { + + if (config.getName().endsWith(SystemPersistence.PROPERTIES_FILE_CONTROLLER_SUFFIX)) { + int idxSuffix = + config.getName().indexOf(SystemPersistence.PROPERTIES_FILE_CONTROLLER_SUFFIX); + int lastIdxSuffix = + config.getName().lastIndexOf(SystemPersistence.PROPERTIES_FILE_CONTROLLER_SUFFIX); + if (idxSuffix != lastIdxSuffix) { + throw new IllegalArgumentException + ("Improper naming of controller properties file: " + + "Expected <controller-name>" + + SystemPersistence.PROPERTIES_FILE_CONTROLLER_SUFFIX); + } + + String name = + config.getName().substring(0, lastIdxSuffix); + try { + Properties properties = PropertyUtil.getProperties(config); + PolicyController controller = PolicyEngine.manager.createPolicyController(name, properties); + controller.start(); + } catch (Exception e) { + logger.error("Main: cannot instantiate policy-controller {} because of {}", name, e.getMessage(), e); + } catch (LinkageError e) { + logger.warn("Main: cannot instantiate policy-controller {} (linkage) because of {}", + name, e.getMessage(), e); + } + } + } + } +} |