Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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. TcSee the License for the * specific language governing permissions and limitations * under the License. */ package org.apache.stratos.autoscaler.client; import org.apache.axis2.transport.http.HTTPConstants; import org.apache.commons.configuration.XMLConfiguration; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.stratos.autoscaler.applications.pojo.ApplicationClusterContext; import org.apache.stratos.autoscaler.exception.cartridge.CartridgeInformationException; import org.apache.stratos.autoscaler.exception.cartridge.SpawningException; import org.apache.stratos.autoscaler.exception.cartridge.TerminationException; import org.apache.stratos.autoscaler.exception.partition.PartitionValidationException; import org.apache.stratos.autoscaler.util.AutoscalerConstants; import org.apache.stratos.autoscaler.util.AutoscalerObjectConverter; import org.apache.stratos.autoscaler.util.AutoscalerUtil; import org.apache.stratos.autoscaler.util.ConfUtil; import org.apache.stratos.cloud.controller.stub.*; import org.apache.stratos.cloud.controller.stub.domain.CartridgeInfo; import org.apache.stratos.cloud.controller.stub.domain.InstanceContext; import org.apache.stratos.cloud.controller.stub.domain.MemberContext; import org.apache.stratos.cloud.controller.stub.domain.Partition; import org.apache.stratos.common.Properties; import org.apache.stratos.common.Property; import org.apache.stratos.common.constants.StratosConstants; import java.rmi.RemoteException; import java.util.ArrayList; import java.util.List; import java.util.Set; /** * This class will call cloud controller web service to take the action decided by Autoscaler */ public class CloudControllerClient { private static final Log log = LogFactory.getLog(CloudControllerClient.class); private static CloudControllerServiceStub stub; /* An instance of a CloudControllerClient is created when the class is loaded. * Since the class is loaded only once, it is guaranteed that an object of * CloudControllerClient is created only once. Hence it is singleton. */ private static class InstanceHolder { private static final CloudControllerClient INSTANCE = new CloudControllerClient(); } public static CloudControllerClient getInstance() { return InstanceHolder.INSTANCE; } private CloudControllerClient() { try { XMLConfiguration conf = ConfUtil.getInstance(null).getConfiguration(); int port = conf.getInt("autoscaler.cloudController.port", AutoscalerConstants.CLOUD_CONTROLLER_DEFAULT_PORT); String hostname = conf.getString("autoscaler.cloudController.hostname", "localhost"); String epr = "https://" + hostname + ":" + port + "/" + AutoscalerConstants.CLOUD_CONTROLLER_SERVICE_SFX; int cloudControllerClientTimeout = conf.getInt("autoscaler.cloudController.clientTimeout", 180000); stub = new CloudControllerServiceStub(epr); stub._getServiceClient().getOptions().setProperty(HTTPConstants.SO_TIMEOUT, cloudControllerClientTimeout); stub._getServiceClient().getOptions().setProperty(HTTPConstants.CONNECTION_TIMEOUT, cloudControllerClientTimeout); } catch (Exception e) { log.error("Could not initialize cloud controller client", e); } } /* * This will validate the given partitions against the given cartridge type. */ public synchronized boolean validateDeploymentPolicy(String cartridgeType, org.apache.stratos.autoscaler.pojo.policy.deployment.partition.network.Partition[] partitions) throws PartitionValidationException { try { if (log.isInfoEnabled()) { log.info(String.format("Validating partitions of policy via cloud controller: [cartridge-type] %s", cartridgeType)); } long startTime = System.currentTimeMillis(); boolean result = stub.validateDeploymentPolicy(cartridgeType, AutoscalerObjectConverter.convertASPartitionsToCCStubPartitions(partitions)); if (log.isDebugEnabled()) { long endTime = System.currentTimeMillis(); log.debug(String.format("Service call validateDeploymentPolicy() returned in %dms", (endTime - startTime))); } return result; } catch (RemoteException e) { log.error(e.getMessage(), e); throw new PartitionValidationException(e.getMessage(), e); } catch (CloudControllerServiceInvalidPartitionExceptionException e) { log.error(e.getFaultMessage().getInvalidPartitionException().getMessage(), e); throw new PartitionValidationException(e.getFaultMessage().getInvalidPartitionException().getMessage()); } catch (CloudControllerServiceInvalidCartridgeTypeExceptionException e) { log.error(e.getFaultMessage().getInvalidCartridgeTypeException().getMessage(), e); throw new PartitionValidationException( e.getFaultMessage().getInvalidCartridgeTypeException().getMessage()); } } /* * Calls the CC to validate the partition. */ public synchronized boolean validatePartition(Partition partition) throws PartitionValidationException { try { if (log.isInfoEnabled()) { log.info(String.format("Validating partition via cloud controller: [id] %s", partition.getId())); } long startTime = System.currentTimeMillis(); boolean result = stub.validatePartition(partition); if (log.isDebugEnabled()) { long endTime = System.currentTimeMillis(); log.debug( String.format("Service call validatePartition() returned in %dms", (endTime - startTime))); } return result; } catch (RemoteException e) { log.error(e.getMessage(), e); throw new PartitionValidationException(e.getMessage(), e); } catch (CloudControllerServiceInvalidPartitionExceptionException e) { log.error(e.getFaultMessage().getInvalidPartitionException().getMessage(), e); throw new PartitionValidationException(e.getFaultMessage().getInvalidPartitionException().getMessage(), e); } } public synchronized MemberContext startInstance(Partition partition, String clusterId, String clusterInstanceId, String networkPartitionId, boolean isPrimary, int minMemberCount) throws SpawningException { try { if (log.isInfoEnabled()) { log.info(String.format( "Trying to spawn an instance via cloud controller: " + "[cluster] %s [partition] %s [network-partition-id] %s", clusterId, partition.getId(), networkPartitionId)); } XMLConfiguration conf = ConfUtil.getInstance(null).getConfiguration(); long expiryTime = conf.getLong(StratosConstants.OBSOLETED_VM_MEMBER_EXPIRY_TIMEOUT, 86400000); if (log.isDebugEnabled()) { log.debug("Member obsolete expiry time is set to: " + expiryTime); } InstanceContext instanceContext = new InstanceContext(); instanceContext.setClusterId(clusterId); instanceContext.setClusterInstanceId(clusterInstanceId); instanceContext.setPartition(partition); instanceContext.setInitTime(System.currentTimeMillis()); instanceContext.setObsoleteExpiryTime(expiryTime); instanceContext.setNetworkPartitionId(networkPartitionId); Properties memberContextProps = new Properties(); Property isPrimaryProp = new Property(); isPrimaryProp.setName("PRIMARY"); isPrimaryProp.setValue(String.valueOf(isPrimary)); Property minCountProp = new Property(); minCountProp.setName(StratosConstants.MIN_COUNT); minCountProp.setValue(String.valueOf(minMemberCount)); memberContextProps.addProperty(isPrimaryProp); memberContextProps.addProperty(minCountProp); instanceContext.setProperties(AutoscalerUtil.toStubProperties(memberContextProps)); long startTime = System.currentTimeMillis(); MemberContext memberContext = stub.startInstance(instanceContext); if (log.isDebugEnabled()) { long endTime = System.currentTimeMillis(); log.debug(String.format("Service call startInstance() returned in %dms", (endTime - startTime))); } return memberContext; } catch (CloudControllerServiceCartridgeNotFoundExceptionException e) { String message = e.getFaultMessage().getCartridgeNotFoundException().getMessage(); log.error(message, e); throw new SpawningException(message, e); } catch (RemoteException e) { log.error(e.getMessage(), e); throw new SpawningException(e.getMessage(), e); } catch (CloudControllerServiceInvalidIaasProviderExceptionException e) { String message = e.getFaultMessage().getInvalidIaasProviderException().getMessage(); log.error(message, e); throw new SpawningException(message, e); } catch (CloudControllerServiceCloudControllerExceptionException e) { String message = e.getMessage(); log.error(message, e); throw new SpawningException(message, e); } } public synchronized void terminateInstances(String clusterId) throws TerminationException { try { if (log.isInfoEnabled()) { log.info(String.format("Terminating all instances of cluster via cloud controller: [cluster] %s", clusterId)); } long startTime = System.currentTimeMillis(); stub.terminateInstances(clusterId); if (log.isDebugEnabled()) { long endTime = System.currentTimeMillis(); log.debug( String.format("Service call terminateInstances() returned in %dms", (endTime - startTime))); } } catch (RemoteException e) { String msg = e.getMessage(); log.error(msg, e); throw new TerminationException(msg, e); } catch (CloudControllerServiceInvalidClusterExceptionException e) { String message = e.getFaultMessage().getInvalidClusterException().getMessage(); log.error(message, e); throw new TerminationException(message, e); } } public synchronized void createApplicationClusters(String appId, Set<ApplicationClusterContext> appClusterContexts) { List<org.apache.stratos.cloud.controller.stub.domain.ApplicationClusterContext> contextDTOs = new ArrayList<org.apache.stratos.cloud.controller.stub.domain.ApplicationClusterContext>(); for (ApplicationClusterContext applicationClusterContext : appClusterContexts) { org.apache.stratos.cloud.controller.stub.domain.ApplicationClusterContext dto = new org.apache.stratos.cloud.controller.stub.domain.ApplicationClusterContext(); dto.setClusterId(applicationClusterContext.getClusterId()); dto.setAutoscalePolicyName(applicationClusterContext.getAutoscalePolicyName()); dto.setDeploymentPolicyName(applicationClusterContext.getDeploymentPolicyName()); dto.setCartridgeType(applicationClusterContext.getCartridgeType()); dto.setHostName(applicationClusterContext.getHostName()); dto.setTenantRange(applicationClusterContext.getTenantRange()); dto.setTextPayload(applicationClusterContext.getTextPayload()); dto.setLbCluster(applicationClusterContext.isLbCluster()); dto.setProperties(AutoscalerUtil.toStubProperties(applicationClusterContext.getProperties())); dto.setDependencyCluterIds(applicationClusterContext.getDependencyCluterId()); contextDTOs.add(dto); } org.apache.stratos.cloud.controller.stub.domain.ApplicationClusterContext[] applicationClusterContextDTOs = new org.apache.stratos.cloud.controller.stub.domain.ApplicationClusterContext[contextDTOs .size()]; contextDTOs.toArray(applicationClusterContextDTOs); try { stub.createApplicationClusters(appId, applicationClusterContextDTOs); } catch (RemoteException e) { String msg = e.getMessage(); log.error(msg, e); //throw new TerminationException(msg, e); } catch (CloudControllerServiceApplicationClusterRegistrationExceptionException e) { String msg = e.getMessage(); log.error(msg, e); } } public void createClusterInstance(String serviceType, String clusterId, String alias, String instanceId, String partitionId, String networkPartitionId) { try { stub.createClusterInstance(serviceType, clusterId, alias, instanceId, partitionId, networkPartitionId); } catch (RemoteException e) { String msg = e.getMessage(); log.error(msg, e); throw new RuntimeException(msg, e); } catch (CloudControllerServiceClusterInstanceCreationExceptionException e) { String msg = e.getMessage(); log.error(msg, e); throw new RuntimeException(msg, e); } } public synchronized void terminateInstance(String memberId) throws TerminationException { try { if (log.isInfoEnabled()) { log.info(String.format("Terminating instance via cloud controller: [member] %s", memberId)); } long startTime = System.currentTimeMillis(); stub.terminateInstance(memberId); if (log.isDebugEnabled()) { long endTime = System.currentTimeMillis(); log.debug( String.format("Service call terminateInstance() returned in %dms", (endTime - startTime))); } } catch (RemoteException e) { String msg = e.getMessage(); log.error(msg, e); throw new TerminationException(msg, e); } catch (CloudControllerServiceInvalidMemberExceptionException e) { String msg = e.getFaultMessage().getInvalidMemberException().getMessage(); log.error(msg, e); throw new TerminationException(msg, e); } catch (CloudControllerServiceInvalidCartridgeTypeExceptionException e) { String msg = e.getFaultMessage().getInvalidCartridgeTypeException().getMessage(); log.error(msg, e); throw new TerminationException(msg, e); } catch (CloudControllerServiceCloudControllerExceptionException e) { String msg = e.getMessage(); log.error(msg, e); throw new TerminationException(msg, e); } } public CartridgeInfo getCartrdgeInformation(String cartridgeType) throws CartridgeInformationException { try { return stub.getCartridgeInfo(cartridgeType); } catch (RemoteException e) { String msg = e.getMessage(); log.error(msg, e); throw new CartridgeInformationException(msg, e); } catch (CloudControllerServiceCartridgeNotFoundExceptionException e) { String msg = e.getMessage(); log.error(msg, e); throw new CartridgeInformationException(msg, e); } } }