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/**
* MigrateDiskTask.java
*
* Copyright (c) 2011 Gluster, Inc. <http://www.gluster.com>
* This file is part of Gluster Management Console.
*
* Gluster Management Console is free software; you can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License as published
* by the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Gluster Management Console is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License
* for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see
* <http://www.gnu.org/licenses/>.
*/
package com.gluster.storage.management.gateway.tasks;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.ContextLoader;
import com.gluster.storage.management.core.exceptions.ConnectionException;
import com.gluster.storage.management.core.exceptions.GlusterRuntimeException;
import com.gluster.storage.management.core.model.Status;
import com.gluster.storage.management.core.model.TaskInfo.TASK_TYPE;
import com.gluster.storage.management.core.model.TaskStatus;
import com.gluster.storage.management.core.utils.ProcessResult;
import com.gluster.storage.management.gateway.services.ClusterService;
import com.gluster.storage.management.gateway.utils.GlusterUtil;
import com.gluster.storage.management.gateway.utils.ServerUtil;
import com.sun.jersey.core.util.Base64;
public class MigrateBrickTask extends Task {
private String fromBrick;
private String toBrick;
private Boolean autoCommit;
private GlusterUtil glusterUtil;
protected ServerUtil serverUtil;
public String getFromBrick() {
return fromBrick;
}
public void setFromBrick(String fromBrick) {
this.fromBrick = fromBrick;
}
public String getToBrick() {
return toBrick;
}
public void setToBrick(String toBrick) {
this.toBrick = toBrick;
}
public Boolean getAutoCommit() {
return autoCommit;
}
public void setAutoCommit(Boolean autoCommit) {
this.autoCommit = autoCommit;
}
public MigrateBrickTask(ClusterService clusterService, String clusterName, String volumeName, String fromBrick,
String toBrick) {
super(clusterService, clusterName, TASK_TYPE.BRICK_MIGRATE, volumeName + "#" + fromBrick + "#" + toBrick,
"Brick Migration on volume [" + volumeName + "] from [" + fromBrick + "] to [" + toBrick + "]", true,
true, true);
setFromBrick(fromBrick);
setToBrick(toBrick);
taskInfo.setName(getId());
init();
}
private void init() {
ApplicationContext ctx = ContextLoader.getCurrentWebApplicationContext();
glusterUtil = ctx.getBean(GlusterUtil.class);
serverUtil = ctx.getBean(ServerUtil.class);
}
@Override
public String getId() {
return new String(Base64.encode(clusterName + "-" + taskInfo.getType() + "-" + taskInfo.getReference() + "-" + fromBrick + "-"
+ toBrick));
}
@Override
public void start() {
try {
startMigration(getOnlineServer().getName());
} catch (Exception e) {
// check if online server has gone offline. If yes, try again one more time.
if (e instanceof ConnectionException || serverUtil.isServerOnline(getOnlineServer()) == false) {
// online server might have gone Offline. try with a new one.
startMigration(getNewOnlineServer().getName());
} else {
throw new GlusterRuntimeException(e.getMessage());
}
}
}
private void startMigration(String onlineServerName) {
String volumeName = getTaskInfo().getReference().split("#")[0];
String output = glusterUtil.executeBrickMigration(onlineServerName, volumeName,
getFromBrick(), getToBrick(), "start");
if (output.matches(".*started successfully$")) {
getTaskInfo().setStatus(
new TaskStatus(new Status(Status.STATUS_CODE_RUNNING, output)));
}
}
@Override
public void pause() {
try {
pauseMigration(getOnlineServer().getName());
} catch (Exception e) {
// check if online server has gone offline. If yes, try again one more time.
if (e instanceof ConnectionException || serverUtil.isServerOnline(getOnlineServer()) == false) {
// online server might have gone offline. try with a new one.
pauseMigration(getNewOnlineServer().getName());
} else {
throw new GlusterRuntimeException(e.getMessage());
}
}
}
private void pauseMigration(String onlineServer) {
String volumeName = getTaskInfo().getReference().split("#")[0];
String output = glusterUtil.executeBrickMigration(onlineServer, volumeName,
getFromBrick(), getToBrick(), "pause");
TaskStatus taskStatus = new TaskStatus();
if (output.matches(".*paused successfully$")) {
taskStatus.setCode(Status.STATUS_CODE_PAUSE);
taskStatus.setMessage(output);
getTaskInfo().setStatus(taskStatus);
return;
}
}
@Override
public void resume() {
start();
}
@Override
public void commit() {
try {
commitMigration(getOnlineServer().getName());
} catch (Exception e) {
// check if online server has gone offline. If yes, try again one more time.
if (e instanceof ConnectionException || serverUtil.isServerOnline(getOnlineServer()) == false) {
// online server might have gone offline. try with a new one.
commitMigration(getNewOnlineServer().getName());
} else {
throw new GlusterRuntimeException(e.getMessage());
}
}
}
private void commitMigration(String serverName) {
String volumeName = getTaskInfo().getReference().split("#")[0];
String output = glusterUtil.executeBrickMigration(serverName, volumeName, getFromBrick(), getToBrick(),
"commit");
TaskStatus taskStatus = new TaskStatus();
if (output.matches(".*commit successful$")) {
taskStatus.setCode(Status.STATUS_CODE_SUCCESS);
taskStatus.setMessage(output);
getTaskInfo().setStatus(taskStatus);
}
}
@Override
public void stop() {
try {
stopMigration(getOnlineServer().getName());
} catch (Exception e) {
// check if online server has gone offline. If yes, try again one more time.
if (e instanceof ConnectionException || serverUtil.isServerOnline(getOnlineServer()) == false) {
// online server might have gone offline. try with a new one.
stopMigration(getNewOnlineServer().getName());
} else {
throw new GlusterRuntimeException(e.getMessage());
}
}
}
private void stopMigration(String serverName) {
String volumeName = getTaskInfo().getReference().split("#")[0];
String output = glusterUtil.executeBrickMigration(serverName, volumeName, getFromBrick(),
getToBrick(), "abort");
TaskStatus taskStatus = new TaskStatus();
if (output.matches(".*aborted successfully$")) {
taskStatus.setCode(Status.STATUS_CODE_SUCCESS);
taskStatus.setMessage(output);
getTaskInfo().setStatus(taskStatus);
}
}
@Override
public TaskStatus checkStatus() {
try {
return checkMigrationStatus(getOnlineServer().getName());
} catch (Exception e) {
// check if online server has gone offline. If yes, try again one more time.
if (e instanceof ConnectionException || serverUtil.isServerOnline(getOnlineServer()) == false) {
// online server might have gone offline. try with a new one.
return checkMigrationStatus(getNewOnlineServer().getName());
}
}
return null;
}
private TaskStatus checkMigrationStatus(String serverName) {
// For committed task, status command (CLI) is invalid, just return current status
if (getTaskInfo().getStatus().getCode() == Status.STATUS_CODE_SUCCESS) {
return getTaskInfo().getStatus();
}
TaskStatus taskStatus = new TaskStatus();
String volumeName = getTaskInfo().getReference().split("#")[0];
String output = glusterUtil.executeBrickMigration(serverName, volumeName, getFromBrick(),
getToBrick(), "status");
if (output.matches("^Number of files migrated.*Migration complete$")
|| output.matches("^Number of files migrated = 0 .*Current file=")) {
// Note: Workaround - if no file in the volume brick to migrate,
// Gluster CLI is not giving proper (complete) status
taskStatus.setCode(Status.STATUS_CODE_COMMIT_PENDING);
if (autoCommit) {
commitMigration(serverName);
return getTaskInfo().getStatus(); // return the committed status
} else {
taskStatus.setMessage(output.replaceAll("Migration complete", "Commit pending"));
}
} else if (output.matches("^Number of files migrated.*Current file=.*")) {
taskStatus.setCode(Status.STATUS_CODE_RUNNING);
} else if (output.matches("^replace brick has been paused.*")) {
taskStatus.setCode(Status.STATUS_CODE_PAUSE);
} else {
taskStatus.setCode(Status.STATUS_CODE_FAILURE);
}
taskStatus.setMessage(output);
taskInfo.setStatus(taskStatus); // Update the task status
return taskStatus;
}
}
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