| /** |
| * 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. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.ambari.server.serveraction.upgrades; |
| import static org.apache.ambari.server.agent.ExecutionCommand.KeyNames.VERSION; |
| |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentMap; |
| |
| import org.apache.ambari.server.AmbariException; |
| import org.apache.ambari.server.actionmanager.HostRoleStatus; |
| import org.apache.ambari.server.agent.CommandReport; |
| import org.apache.ambari.server.api.services.AmbariMetaInfo; |
| import org.apache.ambari.server.configuration.Configuration; |
| import org.apache.ambari.server.controller.AmbariServer; |
| import org.apache.ambari.server.controller.internal.UpgradeResourceProvider; |
| import org.apache.ambari.server.serveraction.AbstractServerAction; |
| import org.apache.ambari.server.serveraction.ServerAction; |
| import org.apache.ambari.server.state.Cluster; |
| import org.apache.ambari.server.state.Clusters; |
| import org.apache.ambari.server.state.StackId; |
| import org.apache.ambari.server.state.StackInfo; |
| import org.apache.ambari.server.state.stack.UpgradePack; |
| import org.apache.ambari.server.state.stack.upgrade.Direction; |
| |
| import com.google.inject.Inject; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Action that represents updating the Desired Stack Id during the middle of a stack upgrade (typically NonRolling). |
| * In a {@link org.apache.ambari.server.state.stack.upgrade.UpgradeType#NON_ROLLING}, the effective Stack Id is |
| * actually changed half-way through calculating the Actions, and this serves to update the database to make it |
| * evident to the user at which point it changed. |
| */ |
| public class UpdateDesiredStackAction extends AbstractServerAction { |
| |
| /** |
| * Logger. |
| */ |
| private static final Logger LOG = LoggerFactory.getLogger(UpdateDesiredStackAction.class); |
| |
| public static final String COMMAND_PARAM_VERSION = VERSION; |
| public static final String COMMAND_DOWNGRADE_FROM_VERSION = "downgrade_from_version"; |
| public static final String COMMAND_PARAM_DIRECTION = "upgrade_direction"; |
| public static final String COMMAND_PARAM_UPGRADE_PACK = "upgrade_pack"; |
| |
| /** |
| * The original "current" stack of the cluster before the upgrade started. |
| * This is the same regardless of whether the current direction is |
| * {@link Direction#UPGRADE} or {@link Direction#DOWNGRADE}. |
| */ |
| public static final String COMMAND_PARAM_ORIGINAL_STACK = "original_stack"; |
| |
| /** |
| * The target upgrade stack before the upgrade started. This is the same |
| * regardless of whether the current direction is {@link Direction#UPGRADE} or |
| * {@link Direction#DOWNGRADE}. |
| */ |
| public static final String COMMAND_PARAM_TARGET_STACK = "target_stack"; |
| |
| /** |
| * The Cluster that this ServerAction implementation is executing on. |
| */ |
| @Inject |
| private Clusters clusters; |
| |
| @Inject |
| private AmbariMetaInfo ambariMetaInfo; |
| |
| /** |
| * The Ambari configuration. |
| */ |
| @Inject |
| private Configuration m_configuration; |
| |
| @Override |
| public CommandReport execute(ConcurrentMap<String, Object> requestSharedDataContext) |
| throws AmbariException, InterruptedException { |
| Map<String, String> commandParams = getExecutionCommand().getCommandParams(); |
| |
| StackId originalStackId = new StackId(commandParams.get(COMMAND_PARAM_ORIGINAL_STACK)); |
| StackId targetStackId = new StackId(commandParams.get(COMMAND_PARAM_TARGET_STACK)); |
| Direction direction = Direction.UPGRADE; |
| if(commandParams.containsKey(COMMAND_PARAM_DIRECTION) |
| && "downgrade".equals(commandParams.get(COMMAND_PARAM_DIRECTION).toLowerCase())) { |
| direction = Direction.DOWNGRADE; |
| } |
| String version = commandParams.get(COMMAND_PARAM_VERSION); |
| String upgradePackName = commandParams.get(COMMAND_PARAM_UPGRADE_PACK); |
| String clusterName = getExecutionCommand().getClusterName(); |
| UpgradePack upgradePack = ambariMetaInfo.getUpgradePacks(originalStackId.getStackName(), originalStackId.getStackVersion()).get(upgradePackName); |
| |
| Map<String, String> roleParams = getExecutionCommand().getRoleParams(); |
| |
| // Make a best attempt at setting the username |
| String userName; |
| if (roleParams != null && roleParams.containsKey(ServerAction.ACTION_USER_NAME)) { |
| userName = roleParams.get(ServerAction.ACTION_USER_NAME); |
| } else { |
| userName = m_configuration.getAnonymousAuditName(); |
| LOG.warn(String.format("Did not receive role parameter %s, will save configs using anonymous username %s", ServerAction.ACTION_USER_NAME, userName)); |
| } |
| |
| return updateDesiredStack(clusterName, originalStackId, targetStackId, version, direction, upgradePack, userName); |
| } |
| |
| /** |
| * Set the cluster's Desired Stack Id during an upgrade. |
| * |
| * @param clusterName the name of the cluster the action is meant for |
| * @param originalStackId the stack Id of the cluster before the upgrade. |
| * @param targetStackId the stack Id that was desired for this upgrade. |
| * @param direction direction, either upgrade or downgrade |
| * @param upgradePack Upgrade Pack to use |
| * @param userName username performing the action |
| * @return the command report to return |
| */ |
| private CommandReport updateDesiredStack( |
| String clusterName, StackId originalStackId, StackId targetStackId, |
| String version, Direction direction, UpgradePack upgradePack, String userName) |
| throws AmbariException, InterruptedException { |
| StringBuilder out = new StringBuilder(); |
| StringBuilder err = new StringBuilder(); |
| |
| try { |
| Cluster cluster = clusters.getCluster(clusterName); |
| StackId currentClusterStackId = cluster.getCurrentStackVersion(); |
| out.append(String.format("Params: %s %s %s %s %s %s\n", |
| clusterName, originalStackId.getStackId(), targetStackId.getStackId(), version, direction.getText(false), upgradePack.getName())); |
| |
| out.append(String.format("Checking if can update the Desired Stack Id to %s. The cluster's current Stack Id is %s\n", targetStackId.getStackId(), currentClusterStackId.getStackId())); |
| |
| // Ensure that the target stack id exist |
| StackInfo desiredClusterStackInfo = ambariMetaInfo.getStack(targetStackId.getStackName(), targetStackId.getStackVersion()); |
| if (null == desiredClusterStackInfo) { |
| String message = String.format("Parameter %s has an invalid value: %s. That Stack Id does not exist.\n", |
| COMMAND_PARAM_TARGET_STACK, targetStackId.getStackId()); |
| err.append(message); |
| out.append(message); |
| return createCommandReport(-1, HostRoleStatus.FAILED, "{}", out.toString(), err.toString()); |
| } |
| |
| // Ensure that the current Stack Id coincides with the parameter that the user passed in. |
| if (!currentClusterStackId.equals(originalStackId)) { |
| String message = String.format("Parameter %s has invalid value: %s. " + |
| "The cluster is currently on stack %s, " + currentClusterStackId.getStackId() + |
| ", yet the parameter to this function indicates a different value.\n", COMMAND_PARAM_ORIGINAL_STACK, originalStackId.getStackId(), currentClusterStackId.getStackId()); |
| err.append(message); |
| out.append(message); |
| return createCommandReport(-1, HostRoleStatus.FAILED, "{}", out.toString(), err.toString()); |
| } |
| |
| // Check for a no-op |
| if (currentClusterStackId.equals(targetStackId)) { |
| String message = String.format("Success! The cluster's Desired Stack Id was already set to %s\n", targetStackId.getStackId()); |
| out.append(message); |
| return createCommandReport(0, HostRoleStatus.COMPLETED, "{}", out.toString(), err.toString()); |
| } |
| |
| // Create Create new configurations that are a merge between the current stack and the desired stack |
| // Also updates the desired stack version. |
| UpgradeResourceProvider upgradeResourceProvider = new UpgradeResourceProvider(AmbariServer.getController()); |
| upgradeResourceProvider.applyStackAndProcessConfigurations(targetStackId.getStackName(), cluster, version, direction, upgradePack, userName); |
| String message = String.format("Success! Set cluster's %s Desired Stack Id to %s.\n", clusterName, targetStackId.getStackId()); |
| out.append(message); |
| |
| return createCommandReport(0, HostRoleStatus.COMPLETED, "{}", out.toString(), err.toString()); |
| } catch (Exception e) { |
| StringWriter sw = new StringWriter(); |
| e.printStackTrace(new PrintWriter(sw)); |
| err.append(sw.toString()); |
| |
| return createCommandReport(-1, HostRoleStatus.FAILED, "{}", out.toString(), err.toString()); |
| } |
| } |
| } |