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package com.sun.enterprise.deployment.client;
import java.util.*;
import com.sun.enterprise.deployapi.SunTarget;
import com.sun.enterprise.deployment.backend.DeploymentStatus;
import com.sun.enterprise.deployment.util.DeploymentProperties;
import com.sun.appserv.management.client.ConnectionSource;
import com.sun.appserv.management.client.ProxyFactory;
import com.sun.appserv.management.deploy.DeploymentMgr;
import com.sun.appserv.management.deploy.DeploymentSupport;
public class RollBackAction {
// Stores the moduleID and options required for undeploy
private String moduleID = null;
private Map options = null;
private int currentOperation = 0;
// Keeps track of the targets on which operations are already over and state of each target
private Map targetState = null;
private Vector targetList = null;
// Used to indicate state of the app on a target
public static final int APP_REF_CREATED = 1;
public static final int APP_STARTED = 2;
public static final int APP_REF_DELETED = 3;
public static final int APP_STOPPED = 4;
// Used to indicate what operation is currently being done
public static final int DEPLOY_OPERATION = 1;
public static final int UNDEPLOY_OPERATION = 2;
public static final int CREATE_APP_REF_OPERATION = 3;
public static final int DELETE_APP_REF_OPERATION = 4;
public RollBackAction(int operation, String moduleID, Map options) {
this.currentOperation = operation;
this.moduleID = moduleID;
this.options = options;
}
// Called after successful completion of each start/create-app-ref on a target
public void addTarget(SunTarget target, int state) {
if(targetList == null) {
targetList = new Vector();
targetState= new HashMap();
}
targetState.put(target.getName(), new Integer(state));
targetList.add(target);
return;
}
// Called when the client wants to rollback current operation
public boolean rollback(ConnectionSource dasConnection, DeploymentStatus rollbackStatus) {
boolean retVal = false;
switch(currentOperation) {
case DEPLOY_OPERATION :
if(!stopModules(dasConnection, rollbackStatus)) {
return false;
}
if(!deleteAppRefs(dasConnection, rollbackStatus)) {
return false;
}
retVal = undeployModule(dasConnection, rollbackStatus);
break;
case CREATE_APP_REF_OPERATION :
if(!stopModules(dasConnection, rollbackStatus)) {
return false;
}
retVal = deleteAppRefs(dasConnection, rollbackStatus);
break;
case UNDEPLOY_OPERATION :
retVal = true; // failures during undeploy from domain will never be rolled back
break;
case DELETE_APP_REF_OPERATION :
if(!createAppRefs(dasConnection, rollbackStatus)) {
return false;
}
retVal = startModules(dasConnection, rollbackStatus);
break;
default :
break;
}
return retVal;
}
private boolean undeployModule(ConnectionSource dasConnection, DeploymentStatus rollbackStatus) {
DeploymentMgr deplMgr = ProxyFactory.getInstance(dasConnection).getDomainRoot().getDeploymentMgr();
Map undeployStatus = deplMgr.undeploy(moduleID, options);
com.sun.appserv.management.deploy.DeploymentStatus finalStatusFromMBean =
DeploymentSupport.mapToDeploymentStatus(undeployStatus);
DeploymentStatus tmp = DeploymentClientUtils.getDeploymentStatusFromAdminStatus(finalStatusFromMBean);
rollbackStatus.addSubStage(tmp);
if (tmp!=null && tmp.getStatus() < DeploymentStatus.WARNING) {
return false;
}
return true;
}
private boolean deleteAppRefs(ConnectionSource dasConnection, DeploymentStatus rollbackStatus) {
if(targetList == null) {
return true;
}
if("true".equals(options.get(DeploymentProperties.DEPLOY_OPTION_FORCE_KEY))) {
options.put(DeploymentProperties.DEPLOY_OPTION_CASCADE_KEY, "false");
} else {
options.put(DeploymentProperties.DEPLOY_OPTION_CASCADE_KEY, "true");
}
try {
SunTarget[] targetObjs = (SunTarget[]) targetList.toArray(new SunTarget[targetList.size()]);
for(int i=0; i<targetObjs.length; i++) {
int state = ((Integer)targetState.get(targetObjs[i].getName())).intValue();
if(state == APP_REF_CREATED) {
DeploymentStatus status =
DeploymentClientUtils.deleteApplicationReference(
dasConnection.getExistingMBeanServerConnection(),
moduleID, targetObjs[i], options);
rollbackStatus.addSubStage(status);
if (status!=null && status.getStatus() < DeploymentStatus.WARNING) {
return false;
}
targetState.remove(targetObjs[i].getName());
}
}
} catch (Exception e) {
return false;
}
return true;
}
private boolean stopModules(ConnectionSource dasConnection, DeploymentStatus rollbackStatus) {
if(targetList == null) {
return true;
}
Map tmpOptions = new HashMap();
tmpOptions.putAll(options);
tmpOptions.put(DeploymentProperties.DEPLOY_OPTION_CASCADE_KEY, "true");
tmpOptions.put(DeploymentProperties.DEPLOY_OPTION_FORCE_KEY, "true");
try {
SunTarget[] targetObjs = (SunTarget[]) targetList.toArray(new SunTarget[targetList.size()]);
for(int i=0; i<targetObjs.length; i++) {
int state = ((Integer)targetState.get(targetObjs[i].getName())).intValue();
if(state == APP_STARTED) {
DeploymentStatus status =
DeploymentClientUtils.stopApplication(
dasConnection.getExistingMBeanServerConnection(),
moduleID, targetObjs[i], tmpOptions);
rollbackStatus.addSubStage(status);
if (status!=null && status.getStatus() < DeploymentStatus.WARNING) {
return false;
}
targetState.put(targetObjs[i].getName(), new Integer(APP_REF_CREATED));
}
}
} catch (Exception e) {
return false;
}
return true;
}
private boolean createAppRefs(ConnectionSource dasConnection, DeploymentStatus rollbackStatus) {
if(targetList == null) {
return true;
}
try {
SunTarget[] targetObjs = (SunTarget[]) targetList.toArray(new SunTarget[targetList.size()]);
for(int i=0; i<targetObjs.length; i++) {
int state = ((Integer)targetState.get(targetObjs[i].getName())).intValue();
if(state == APP_REF_DELETED) {
DeploymentStatus status =
DeploymentClientUtils.createApplicationReference(
dasConnection.getExistingMBeanServerConnection(),
moduleID, targetObjs[i], options);
rollbackStatus.addSubStage(status);
if (status!=null && status.getStatus() < DeploymentStatus.WARNING) {
return false;
}
targetState.put(targetObjs[i].getName(), new Integer(APP_STOPPED));
}
}
} catch (Exception e) {
return false;
}
return true;
}
private boolean startModules(ConnectionSource dasConnection, DeploymentStatus rollbackStatus) {
if(targetList == null) {
return true;
}
try {
SunTarget[] targetObjs = (SunTarget[]) targetList.toArray(new SunTarget[targetList.size()]);
for(int i=0; i<targetObjs.length; i++) {
int state = ((Integer)targetState.get(targetObjs[i].getName())).intValue();
if(state == APP_STOPPED) {
DeploymentStatus status =
DeploymentClientUtils.startApplication(
dasConnection.getExistingMBeanServerConnection(),
moduleID, targetObjs[i], options);
rollbackStatus.addSubStage(status);
// We don't check the start return because we can't do anything if the instance is down
targetState.remove(targetObjs[i].getName());
}
}
} catch (Exception e) {
return false;
}
return true;
}
}
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