/*
* 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.catalina.ant;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import org.apache.tools.ant.BuildException;
/**
* Ant task that implements the <code>/status</code> command, supported by the
* mod_jk status (1.2.9) application.
*
* @author Peter Rossbach
*
* @since 5.5.9
*/
public class JKStatusUpdateTask extends AbstractCatalinaTask {
private String worker = "lb";
private String workerType = "lb";
private int internalid = 0;
private Integer lbRetries;
private Integer lbRecovertime;
private Boolean lbStickySession = Boolean.TRUE;
private Boolean lbForceSession = Boolean.FALSE;
private Integer workerLoadFactor;
private String workerRedirect;
private String workerClusterDomain;
private Boolean workerDisabled = Boolean.FALSE;
private Boolean workerStopped = Boolean.FALSE;
private boolean isLBMode = true;
private String workerLb;
/**
*
*/
public JKStatusUpdateTask() {
super();
setUrl("http://localhost/status");
}
/**
* @return Returns the internalid.
*/
public int getInternalid() {
return internalid;
}
/**
* @param internalid
* The internalid to set.
*/
public void setInternalid(int internalid) {
this.internalid = internalid;
}
/**
* @return Returns the lbForceSession.
*/
public Boolean getLbForceSession() {
return lbForceSession;
}
/**
* @param lbForceSession
* The lbForceSession to set.
*/
public void setLbForceSession(Boolean lbForceSession) {
this.lbForceSession = lbForceSession;
}
/**
* @return Returns the lbRecovertime.
*/
public Integer getLbRecovertime() {
return lbRecovertime;
}
/**
* @param lbRecovertime
* The lbRecovertime to set.
*/
public void setLbRecovertime(Integer lbRecovertime) {
this.lbRecovertime = lbRecovertime;
}
/**
* @return Returns the lbRetries.
*/
public Integer getLbRetries() {
return lbRetries;
}
/**
* @param lbRetries
* The lbRetries to set.
*/
public void setLbRetries(Integer lbRetries) {
this.lbRetries = lbRetries;
}
/**
* @return Returns the lbStickySession.
*/
public Boolean getLbStickySession() {
return lbStickySession;
}
/**
* @param lbStickySession
* The lbStickySession to set.
*/
public void setLbStickySession(Boolean lbStickySession) {
this.lbStickySession = lbStickySession;
}
/**
* @return Returns the worker.
*/
public String getWorker() {
return worker;
}
/**
* @param worker
* The worker to set.
*/
public void setWorker(String worker) {
this.worker = worker;
}
/**
* @return Returns the workerType.
*/
public String getWorkerType() {
return workerType;
}
/**
* @param workerType
* The workerType to set.
*/
public void setWorkerType(String workerType) {
this.workerType = workerType;
}
/**
* @return Returns the workerLb.
*/
public String getWorkerLb() {
return workerLb;
}
/**
* @param workerLb
* The workerLb to set.
*/
public void setWorkerLb(String workerLb) {
this.workerLb = workerLb;
}
/**
* @return Returns the workerClusterDomain.
*/
public String getWorkerClusterDomain() {
return workerClusterDomain;
}
/**
* @param workerClusterDomain
* The workerClusterDomain to set.
*/
public void setWorkerClusterDomain(String workerClusterDomain) {
this.workerClusterDomain = workerClusterDomain;
}
/**
* @return Returns the workerDisabled.
*/
public Boolean getWorkerDisabled() {
return workerDisabled;
}
/**
* @param workerDisabled
* The workerDisabled to set.
*/
public void setWorkerDisabled(Boolean workerDisabled) {
this.workerDisabled = workerDisabled;
}
/**
* @return Returns the workerStopped.
*/
public Boolean getWorkerStopped() {
return workerStopped;
}
/**
* @param workerStopped The workerStopped to set.
*/
public void setWorkerStopped(Boolean workerStopped) {
this.workerStopped = workerStopped;
}
/**
* @return Returns the workerLoadFactor.
*/
public Integer getWorkerLoadFactor() {
return workerLoadFactor;
}
/**
* @param workerLoadFactor
* The workerLoadFactor to set.
*/
public void setWorkerLoadFactor(Integer workerLoadFactor) {
this.workerLoadFactor = workerLoadFactor;
}
/**
* @return Returns the workerRedirect.
*/
public String getWorkerRedirect() {
return workerRedirect;
}
/**
* @param workerRedirect
* The workerRedirect to set.
*/
public void setWorkerRedirect(String workerRedirect) {
this.workerRedirect = workerRedirect;
}
/**
* Execute the requested operation.
*
* @exception BuildException
* if an error occurs
*/
public void execute() throws BuildException {
super.execute();
checkParameter();
StringBuffer sb = createLink();
execute(sb.toString(), null, null, -1);
}
/**
* Create JkStatus link
* <ul>
* <li><b>load balance example:
* </b>http://localhost/status?cmd=update&mime=txt&w=lb&lf=false&ls=true</li>
* <li><b>worker example:
* </b>http://localhost/status?cmd=update&mime=txt&w=node1&l=lb&wf=1&wd=false&ws=false
* </li>
* </ul>
*
* @return create jkstatus link
*/
private StringBuffer createLink() {
// Building URL
StringBuffer sb = new StringBuffer();
try {
sb.append("?cmd=update&mime=txt");
sb.append("&w=");
sb.append(URLEncoder.encode(worker, getCharset()));
if (isLBMode) {
//http://localhost/status?cmd=update&mime=txt&w=lb&lf=false&ls=true
if ((lbRetries != null)) { // > 0
sb.append("&lr=");
sb.append(lbRetries);
}
if ((lbRecovertime != null)) { // > 59
sb.append("<=");
sb.append(lbRecovertime);
}
if ((lbStickySession != null)) {
sb.append("&ls=");
sb.append(lbStickySession);
}
if ((lbForceSession != null)) {
sb.append("&lf=");
sb.append(lbForceSession);
}
} else {
//http://localhost/status?cmd=update&mime=txt&w=node1&l=lb&wf=1&wd=false&ws=false
if ((workerLb != null)) { // must be configured
sb.append("&l=");
sb.append(URLEncoder.encode(workerLb, getCharset()));
}
if ((workerLoadFactor != null)) { // >= 1
sb.append("&wf=");
sb.append(workerLoadFactor);
}
if ((workerDisabled != null)) {
sb.append("&wd=");
sb.append(workerDisabled);
}
if ((workerStopped != null)) {
sb.append("&ws=");
sb.append(workerStopped);
}
if ((workerRedirect != null)) { // other worker conrecte lb's
sb.append("&wr=");
}
if ((workerClusterDomain != null)) {
sb.append("&wc=");
sb.append(URLEncoder.encode(workerClusterDomain,
getCharset()));
}
}
} catch (UnsupportedEncodingException e) {
throw new BuildException("Invalid 'charset' attribute: "
+ getCharset());
}
return sb;
}
/**
* check correct lb and worker pararmeter
*/
protected void checkParameter() {
if (worker == null) {
throw new BuildException("Must specify 'worker' attribute");
}
if (workerType == null) {
throw new BuildException("Must specify 'workerType' attribute");
}
if ("lb".equals(workerType)) {
if (lbRecovertime == null && lbRetries == null) {
throw new BuildException(
"Must specify at a lb worker either 'lbRecovertime' or"
+ "'lbRetries' attribute");
}
if (lbStickySession == null || lbForceSession == null) {
throw new BuildException("Must specify at a lb worker either"
+ "'lbStickySession' and 'lbForceSession' attribute");
}
if (null != lbRecovertime && 60 < lbRecovertime.intValue()) {
throw new BuildException(
"The 'lbRecovertime' must be greater than 59");
}
if (null != lbRetries && 1 < lbRetries.intValue()) {
throw new BuildException(
"The 'lbRetries' must be greater than 1");
}
isLBMode = true;
} else if ("worker".equals(workerType)) {
if (workerDisabled == null) {
throw new BuildException(
"Must specify at a node worker 'workerDisabled' attribute");
}
if (workerStopped == null) {
throw new BuildException(
"Must specify at a node worker 'workerStopped' attribute");
}
if (workerLoadFactor == null ) {
throw new BuildException(
"Must specify at a node worker 'workerLoadFactor' attribute");
}
if (workerClusterDomain == null) {
throw new BuildException(
"Must specify at a node worker 'workerClusterDomain' attribute");
}
if (workerRedirect == null) {
throw new BuildException(
"Must specify at a node worker 'workerRedirect' attribute");
}
if (workerLb == null) {
throw new BuildException("Must specify 'workerLb' attribute");
}
if (workerLoadFactor.intValue() < 1) {
throw new BuildException(
"The 'workerLoadFactor' must be greater or equal 1");
}
isLBMode = false;
} else {
throw new BuildException(
"Only 'lb' and 'worker' supported as workerType attribute");
}
}
}