Repository: stratos
Updated Branches:
  refs/heads/stratos-4.1.x b5d1020da -> 70eaa362d


improving force undeployment


Project: http://git-wip-us.apache.org/repos/asf/stratos/repo
Commit: http://git-wip-us.apache.org/repos/asf/stratos/commit/45228ba3
Tree: http://git-wip-us.apache.org/repos/asf/stratos/tree/45228ba3
Diff: http://git-wip-us.apache.org/repos/asf/stratos/diff/45228ba3

Branch: refs/heads/stratos-4.1.x
Commit: 45228ba3739e53f9cddcbf1b8484b98192bb5ce9
Parents: 21e6c20
Author: reka <[email protected]>
Authored: Wed Sep 16 10:48:04 2015 +0530
Committer: reka <[email protected]>
Committed: Wed Sep 16 10:49:03 2015 +0530

----------------------------------------------------------------------
 .../stratos/autoscaler/monitor/Monitor.java     |   3 +-
 .../monitor/component/ApplicationMonitor.java   |  45 ++---
 .../monitor/component/GroupMonitor.java         |  69 +++----
 .../component/ParentComponentMonitor.java       |   4 +
 .../services/impl/AutoscalerServiceImpl.java    | 183 +++++++++++--------
 .../stratos/autoscaler/util/AutoscalerUtil.java |  38 ++++
 .../activemq-data/testBroker/KahaDB/db-1.log    | Bin 0 -> 33030144 bytes
 .../activemq-data/testBroker/KahaDB/db.data     | Bin 0 -> 49152 bytes
 .../activemq-data/testBroker/KahaDB/db.redo     | Bin 0 -> 49240 bytes
 .../application/ApplicationUpdateTest.java      |   7 +-
 10 files changed, 209 insertions(+), 140 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/stratos/blob/45228ba3/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/Monitor.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/Monitor.java
 
b/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/Monitor.java
index 170d99f..c58ec41 100644
--- 
a/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/Monitor.java
+++ 
b/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/Monitor.java
@@ -22,6 +22,7 @@ import 
org.apache.stratos.autoscaler.monitor.component.ParentComponentMonitor;
 import org.apache.stratos.messaging.domain.instance.Instance;
 
 import java.util.*;
+import java.util.concurrent.ConcurrentHashMap;
 
 /**
  * Abstract class for the monitoring functionality in Autoscaler.
@@ -38,7 +39,7 @@ public abstract class Monitor implements EventHandler, 
Runnable {
     //monitors map, key=InstanceId and 
value=ClusterInstance/GroupInstance/ApplicationInstance
     protected Map<String, Instance> instanceIdToInstanceMap;
     public Monitor() {
-        this.instanceIdToInstanceMap = new HashMap<String, Instance>();
+        this.instanceIdToInstanceMap = new ConcurrentHashMap<String, 
Instance>();
     }
 
     /**

http://git-wip-us.apache.org/repos/asf/stratos/blob/45228ba3/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/component/ApplicationMonitor.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/component/ApplicationMonitor.java
 
b/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/component/ApplicationMonitor.java
index 70ee9d4..e15b795 100644
--- 
a/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/component/ApplicationMonitor.java
+++ 
b/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/component/ApplicationMonitor.java
@@ -445,30 +445,33 @@ public class ApplicationMonitor extends 
ParentComponentMonitor {
                     removeInstanceFromFromInactiveMap(childId, instanceId);
                     removeInstanceFromFromTerminatingMap(childId, instanceId);
 
-                    ApplicationInstance instance = (ApplicationInstance) 
instanceIdToInstanceMap.get(instanceId);
-                    if (instance != null) {
-                        if (isTerminating() || instance.getStatus() == 
ApplicationStatus.Terminating ||
-                                instance.getStatus() == 
ApplicationStatus.Terminated) {
-                            
ServiceReferenceHolder.getInstance().getGroupStatusProcessorChain().process(id,
-                                    appId, instanceId);
-                        } else {
-                            Monitor monitor = getMonitor(childId);
-                            boolean active = false;
-                            if (monitor instanceof GroupMonitor) {
-                                //Checking whether the Group is still active 
in case the faulty member
-                                // identified after scaling up
-                                active = verifyGroupStatus(childId, 
instanceId, GroupStatus.Active);
-                            }
-                            if (!active) {
-                                onChildTerminatedEvent(childId, instanceId);
+                    //If application is forcefully un-deployed, no need to 
handle here.
+                    if(!force) {
+                        ApplicationInstance instance = (ApplicationInstance) 
instanceIdToInstanceMap.get(instanceId);
+                        if (instance != null) {
+                            if (isTerminating() || instance.getStatus() == 
ApplicationStatus.Terminating ||
+                                    instance.getStatus() == 
ApplicationStatus.Terminated) {
+                                
ServiceReferenceHolder.getInstance().getGroupStatusProcessorChain().process(id,
+                                        appId, instanceId);
                             } else {
-                                log.info("[Group Instance] " + instanceId + " 
is still active " +
-                                        "upon termination of the [child ] " + 
childId);
+                                Monitor monitor = getMonitor(childId);
+                                boolean active = false;
+                                if (monitor instanceof GroupMonitor) {
+                                    //Checking whether the Group is still 
active in case the faulty member
+                                    // identified after scaling up
+                                    active = verifyGroupStatus(childId, 
instanceId, GroupStatus.Active);
+                                }
+                                if (!active) {
+                                    onChildTerminatedEvent(childId, 
instanceId);
+                                } else {
+                                    log.info("[Group Instance] " + instanceId 
+ " is still active " +
+                                            "upon termination of the [child ] 
" + childId);
+                                }
                             }
+                        } else {
+                            log.warn("The required instance cannot be found in 
the the [GroupMonitor] " +
+                                    id);
                         }
-                    } else {
-                        log.warn("The required instance cannot be found in the 
the [GroupMonitor] " +
-                                id);
                     }
                 }
             }

http://git-wip-us.apache.org/repos/asf/stratos/blob/45228ba3/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/component/GroupMonitor.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/component/GroupMonitor.java
 
b/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/component/GroupMonitor.java
index bc3052a..3136ed0 100644
--- 
a/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/component/GroupMonitor.java
+++ 
b/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/component/GroupMonitor.java
@@ -504,43 +504,48 @@ public class GroupMonitor extends ParentComponentMonitor {
         removeInstanceFromFromInactiveMap(childId, instanceId);
         removeInstanceFromFromTerminatingMap(childId, instanceId);
 
-        GroupInstance instance = (GroupInstance) 
instanceIdToInstanceMap.get(instanceId);
-        if (instance != null) {
-            // If this parent instance is terminating, then based on child 
notification,
-            // it has to decide its state rather than starting a the children 
recovery
-
-            ApplicationMonitor applicationMonitor = 
AutoscalerContext.getInstance().
-                    getAppMonitor(appId);
-            //In case if the group instance is not in terminating while 
application is
-            // terminating, changing the status to terminating
-            if (applicationMonitor.isTerminating() && 
instance.getStatus().getCode() < 3) {
-                //Sending group instance terminating event
-                ApplicationBuilder.handleGroupTerminatingEvent(appId, id, 
instanceId);
-            }
+        // If this parent instance is terminating, then based on child 
notification,
+        // it has to decide its state rather than starting a the children 
recovery
+
+        ApplicationMonitor applicationMonitor = 
AutoscalerContext.getInstance().
+                getAppMonitor(appId);
+        //If application is forcefully un-deployed, no need to handle here.
+        if(!applicationMonitor.isForce()) {
+            GroupInstance instance = (GroupInstance) 
instanceIdToInstanceMap.get(instanceId);
+            if (instance != null) {
+
+                //In case if the group instance is not in terminating while 
application is
+                // terminating, changing the status to terminating
+                if (applicationMonitor.isTerminating() && 
instance.getStatus().getCode() < 3) {
+                    //Sending group instance terminating event
+                    ApplicationBuilder.handleGroupTerminatingEvent(appId, id, 
instanceId);
+                }
 
-            if (instance.getStatus() == GroupStatus.Terminating ||
-                    instance.getStatus() == GroupStatus.Terminated) {
-                
ServiceReferenceHolder.getInstance().getGroupStatusProcessorChain().process(id,
-                        appId, instanceId);
-            } else {
-                //Checking whether the child who notified is still active.
-                // If it is active(scale down case), no need to act upon it.
-                // Otherwise act upon Termination and see whether it is 
required to start
-                // instance again based on termination behavior
-                boolean active = verifyGroupStatus(childId, instanceId, 
GroupStatus.Active);
-                if (!active) {
-                    onChildTerminatedEvent(childId, instanceId);
+                if (instance.getStatus() == GroupStatus.Terminating ||
+                        instance.getStatus() == GroupStatus.Terminated) {
+                    
ServiceReferenceHolder.getInstance().getGroupStatusProcessorChain().process(id,
+                            appId, instanceId);
                 } else {
-                    log.info("[Group Instance] " + instanceId + " for 
[application] " + appId +
-                            " is still active upon termination" +
-                            " of the [child] " + childId);
+                    //Checking whether the child who notified is still active.
+                    // If it is active(scale down case), no need to act upon 
it.
+                    // Otherwise act upon Termination and see whether it is 
required to start
+                    // instance again based on termination behavior
+                    boolean active = verifyGroupStatus(childId, instanceId, 
GroupStatus.Active);
+                    if (!active) {
+                        onChildTerminatedEvent(childId, instanceId);
+                    } else {
+                        log.info("[Group Instance] " + instanceId + " for 
[application] " + appId +
+                                " is still active upon termination" +
+                                " of the [child] " + childId);
+                    }
                 }
+            } else {
+                log.warn("The required [instance] " + instanceId + " for 
[application] " + appId +
+                        " cannot be found in the the [GroupMonitor] " +
+                        id + " upon termination of the [child] " + childId);
             }
-        } else {
-            log.warn("The required [instance] " + instanceId + " for 
[application] " + appId +
-                    " cannot be found in the the [GroupMonitor] " +
-                    id + " upon termination of the [child] " + childId);
         }
+
     }
 
 

http://git-wip-us.apache.org/repos/asf/stratos/blob/45228ba3/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/component/ParentComponentMonitor.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/component/ParentComponentMonitor.java
 
b/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/component/ParentComponentMonitor.java
index 98e97cf..f05827a 100644
--- 
a/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/component/ParentComponentMonitor.java
+++ 
b/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/monitor/component/ParentComponentMonitor.java
@@ -1062,4 +1062,8 @@ public abstract class ParentComponentMonitor extends 
Monitor {
             return stringBuilder.toString();
         }
     }
+
+    public void removeMonitor(String id) {
+        this.aliasToActiveChildMonitorsMap.remove(id);
+    }
 }

http://git-wip-us.apache.org/repos/asf/stratos/blob/45228ba3/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/services/impl/AutoscalerServiceImpl.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/services/impl/AutoscalerServiceImpl.java
 
b/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/services/impl/AutoscalerServiceImpl.java
index d9023f7..605367f 100644
--- 
a/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/services/impl/AutoscalerServiceImpl.java
+++ 
b/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/services/impl/AutoscalerServiceImpl.java
@@ -41,8 +41,10 @@ import 
org.apache.stratos.autoscaler.exception.application.InvalidApplicationPol
 import 
org.apache.stratos.autoscaler.exception.application.InvalidServiceGroupException;
 import 
org.apache.stratos.autoscaler.exception.application.UnremovableApplicationException;
 import org.apache.stratos.autoscaler.exception.policy.*;
+import org.apache.stratos.autoscaler.monitor.Monitor;
 import org.apache.stratos.autoscaler.monitor.cluster.ClusterMonitor;
 import org.apache.stratos.autoscaler.monitor.component.ApplicationMonitor;
+import org.apache.stratos.autoscaler.monitor.component.GroupMonitor;
 import org.apache.stratos.autoscaler.pojo.Dependencies;
 import org.apache.stratos.autoscaler.pojo.ServiceGroup;
 import org.apache.stratos.autoscaler.pojo.policy.PolicyManager;
@@ -70,6 +72,7 @@ import 
org.apache.stratos.manager.service.stub.domain.application.signup.Artifac
 import org.apache.stratos.messaging.domain.application.Application;
 import org.apache.stratos.messaging.domain.application.ClusterDataHolder;
 import org.apache.stratos.messaging.domain.instance.ClusterInstance;
+import org.apache.stratos.messaging.domain.instance.Instance;
 import org.apache.stratos.messaging.domain.topology.Cluster;
 import org.apache.stratos.messaging.domain.topology.Member;
 import org.apache.stratos.messaging.message.receiver.topology.TopologyManager;
@@ -251,8 +254,7 @@ public class AutoscalerServiceImpl implements 
AutoscalerService {
                 application = 
ApplicationHolder.getApplications().getApplication(applicationId);
                 application.setApplicationPolicyId(applicationPolicyId);
                 ApplicationHolder.persistApplication(application);
-            }
-            finally {
+            } finally {
                 ApplicationHolder.releaseWriteLock();
             }
 
@@ -277,8 +279,7 @@ public class AutoscalerServiceImpl implements 
AutoscalerService {
                     applicationId);
 
             return true;
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             ApplicationContext applicationContext = 
RegistryManager.getInstance().
                     getApplicationContext(applicationId);
             if (applicationContext != null) {
@@ -359,8 +360,7 @@ public class AutoscalerServiceImpl implements 
AutoscalerService {
                             applicationContext.getApplicationId()));
                 }
             }
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             String message =
                     "Could not add application signup: [application-id]" + 
applicationContext.getApplicationId();
             log.error(message, e);
@@ -410,8 +410,7 @@ public class AutoscalerServiceImpl implements 
AutoscalerService {
                 }
             }
 
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             String message = "Could not remove application signup(s)";
             log.error(message, e);
             throw new RuntimeException(message, e);
@@ -481,10 +480,10 @@ public class AutoscalerServiceImpl implements 
AutoscalerService {
             return false;
         }
 
-        boolean applicationSignUpExists =false;
+        boolean applicationSignUpExists = false;
 
         ApplicationContext applicationContext = 
RegistryManager.getInstance().getApplicationContext(applicationId);
-        if(applicationContext.isMultiTenant()){
+        if (applicationContext.isMultiTenant()) {
             StratosManagerServiceClient serviceClient = 
StratosManagerServiceClient.getInstance();
             ApplicationSignUp applicationSignUps[] = 
serviceClient.getApplicationSignUps(applicationId);
 
@@ -564,8 +563,7 @@ public class AutoscalerServiceImpl implements 
AutoscalerService {
             if (log.isInfoEnabled()) {
                 log.info("Application undeployment process started: 
[application-id] " + applicationId);
             }
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             String message = "Could not start application undeployment 
process: [application-id] " + applicationId;
             log.error(message, e);
             throw new RuntimeException(message, e);
@@ -600,8 +598,7 @@ public class AutoscalerServiceImpl implements 
AutoscalerService {
 
             ApplicationBuilder.handleApplicationRemoval(applicationId);
             log.info(String.format("Application deleted successfully: 
[application-id] %s", applicationId));
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             String message = String.format("Could not delete application: 
[application-id] %s", applicationId);
             log.error(message, e);
             throw new RuntimeException(message, e);
@@ -745,8 +742,7 @@ public class AutoscalerServiceImpl implements 
AutoscalerService {
 
         try {
             RegistryManager.getInstance().updateServiceGroup(cartridgeGroup);
-        }
-        catch (org.wso2.carbon.registry.core.exceptions.RegistryException e) {
+        } catch (org.wso2.carbon.registry.core.exceptions.RegistryException e) 
{
             String message = (String.format("Cannot update cartridge group: 
[group-name] %s",
                     cartridgeGroup.getName()));
             throw new RuntimeException(message, e);
@@ -777,8 +773,7 @@ public class AutoscalerServiceImpl implements 
AutoscalerService {
                 }
                 throw new CartridgeGroupNotFoundException(msg);
             }
-        }
-        catch (org.wso2.carbon.registry.core.exceptions.RegistryException e) {
+        } catch (org.wso2.carbon.registry.core.exceptions.RegistryException e) 
{
             String message = "Could not remove cartridge group: " + groupName;
             log.error(message, e);
             throw new RuntimeException(message, e);
@@ -792,8 +787,7 @@ public class AutoscalerServiceImpl implements 
AutoscalerService {
         }
         try {
             return RegistryManager.getInstance().getServiceGroup(name);
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             throw new AutoScalerException("Error occurred while retrieving 
cartridge group", e);
         }
     }
@@ -811,13 +805,11 @@ public class AutoscalerServiceImpl implements 
AutoscalerService {
                 }
             }
             return null;
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             String message = String.format("Could not find cluster id: 
[application-id] %s [alias] %s",
                     applicationId, alias);
             throw new AutoScalerException(message, e);
-        }
-        finally {
+        } finally {
             ApplicationHolder.releaseReadLock();
         }
     }
@@ -833,8 +825,7 @@ public class AutoscalerServiceImpl implements 
AutoscalerService {
     public boolean undeployServiceGroup(String name) throws 
AutoScalerException {
         try {
             RegistryManager.getInstance().removeServiceGroup(name);
-        }
-        catch (RegistryException e) {
+        } catch (RegistryException e) {
             throw new AutoScalerException("Error occurred while removing the 
cartridge groups", e);
         }
         return true;
@@ -950,66 +941,102 @@ public class AutoscalerServiceImpl implements 
AutoscalerService {
                         "[application-id] %s", applicationId));
                 return;
             }
-        }
-        finally {
+        } finally {
             ApplicationHolder.releaseReadLock();
         }
 
-        Set<ClusterDataHolder> allClusters = 
application.getClusterDataRecursively();
-        for (ClusterDataHolder clusterDataHolder : allClusters) {
-            String serviceType = clusterDataHolder.getServiceType();
-            String clusterId = clusterDataHolder.getClusterId();
+        //Stopping the application monitor thread
+        ApplicationMonitor applicationMonitor = 
AutoscalerContext.getInstance().
+                getAppMonitor(applicationId);
+        if (applicationMonitor != null) {
+            applicationMonitor.destroy();
 
-            Cluster cluster;
-            try {
-                TopologyManager.acquireReadLockForCluster(serviceType, 
clusterId);
-                cluster = 
TopologyManager.getTopology().getService(serviceType).getCluster(clusterId);
-            }
-            finally {
-                TopologyManager.releaseReadLockForCluster(serviceType, 
clusterId);
-            }
+            if (applicationMonitor.hasInstance()) {
+                Map<String, Monitor> monitors = applicationMonitor.
+                        getAliasToActiveChildMonitorsMap();
+                AutoscalerUtil.handleForceTermination(monitors.values(),
+                        applicationMonitor, applicationId);
 
-            //If there are no members in cluster Instance, send cluster 
Terminated Event
-            //Stopping the cluster monitor thread
-            ClusterMonitor clusterMonitor = AutoscalerContext.getInstance().
-                    getClusterMonitor(clusterId);
-            if (clusterMonitor != null) {
-                clusterMonitor.destroy();
-            } else {
-                if (log.isDebugEnabled()) {
-                    log.debug(String.format("Cluster monitor cannot be found 
for [application] %s " +
-                            "[cluster] %s", applicationId, clusterId));
-                }
-            }
-            if (cluster != null) {
-                Collection<ClusterInstance> allClusterInstances = 
cluster.getClusterInstances();
-                for (ClusterInstance clusterInstance : allClusterInstances) {
-                    
ClusterStatusEventPublisher.sendClusterTerminatedEvent(applicationId, 
cluster.getServiceName(),
-                            clusterId, clusterInstance.getInstanceId());
+                Collection<Instance> applicationInstances = 
applicationMonitor.getInstances();
+                for (Instance instance : applicationInstances) {
+                    
ApplicationBuilder.handleApplicationInstanceTerminatedEvent(applicationId,
+                            instance.getInstanceId());
                 }
 
-                List<String> memberListToTerminate = new LinkedList<String>();
-                for (Member member : cluster.getMembers()) {
-                    memberListToTerminate.add(member.getMemberId());
-                }
+                Set<ClusterDataHolder> allClusters = 
application.getClusterDataRecursively();
+                for (ClusterDataHolder clusterDataHolder : allClusters) {
+                    String serviceType = clusterDataHolder.getServiceType();
+                    String clusterId = clusterDataHolder.getClusterId();
 
-                for (String memberIdToTerminate : memberListToTerminate) {
+                    Cluster cluster;
                     try {
-                        log.info(String.format(
-                                "Terminating member forcefully [member-id] %s 
of the cluster [cluster-id] %s " +
-                                        "[application-id] %s", 
memberIdToTerminate, clusterId, application));
-                        
AutoscalerCloudControllerClient.getInstance().terminateInstanceForcefully(memberIdToTerminate);
+                        TopologyManager.acquireReadLockForCluster(serviceType, 
clusterId);
+                        cluster = 
TopologyManager.getTopology().getService(serviceType).getCluster(clusterId);
+                    } finally {
+                        TopologyManager.releaseReadLockForCluster(serviceType, 
clusterId);
+                    }
+
+                    //If there are no members in cluster Instance, send 
cluster Terminated Event
+                    //Stopping the cluster monitor thread
+                    ClusterMonitor clusterMonitor = 
AutoscalerContext.getInstance().
+                            getClusterMonitor(clusterId);
+                    if (clusterMonitor != null) {
+                        clusterMonitor.destroy();
+                    } else {
+                        if (log.isDebugEnabled()) {
+                            log.debug(String.format("Cluster monitor cannot be 
found for [application] %s " +
+                                    "[cluster] %s", applicationId, clusterId));
+                        }
                     }
-                    catch (Exception e) {
-                        log.error(
-                                String.format("Forceful termination of member 
%s has failed, but continuing forceful " +
-                                        "deletion of other members", 
memberIdToTerminate));
+                    if (cluster != null) {
+                        Collection<ClusterInstance> allClusterInstances = 
cluster.getClusterInstances();
+
+                        if (allClusterInstances.isEmpty() && clusterMonitor != 
null) {
+                            
AutoscalerContext.getInstance().removeClusterMonitor(clusterId);
+                        }
+
+                        List<String> memberListToTerminate = new 
LinkedList<String>();
+                        for (Member member : cluster.getMembers()) {
+                            memberListToTerminate.add(member.getMemberId());
+                        }
+
+                        for (String memberIdToTerminate : 
memberListToTerminate) {
+                            try {
+                                log.info(String.format(
+                                        "Terminating member forcefully 
[member-id] %s of the cluster [cluster-id] %s " +
+                                                "[application-id] %s", 
memberIdToTerminate, clusterId, application));
+                                
AutoscalerCloudControllerClient.getInstance().terminateInstanceForcefully(memberIdToTerminate);
+                            } catch (Exception e) {
+                                log.error(
+                                        String.format("Forceful termination of 
member %s has failed, but continuing forceful " +
+                                                "deletion of other members", 
memberIdToTerminate));
+                            }
+                        }
                     }
+
                 }
-            }
+            } else {
+                //There is no application instances. Need to directly 
un-deploy the application
+                // stopping application thread
+                ApplicationContext applicationContext = 
AutoscalerContext.getInstance().
+                        getApplicationContext(applicationId);
+                applicationMonitor.destroy();
+                
AutoscalerContext.getInstance().removeAppMonitor(applicationId);
+                // Remove network partition algorithm context
+                
AutoscalerContext.getInstance().removeNetworkPartitionAlgorithmContext(applicationId);
+                // update application status in application context
+                
applicationContext.setStatus(ApplicationContext.STATUS_CREATED);
+                
AutoscalerContext.getInstance().updateApplicationContext(applicationContext);
+                
RegistryManager.getInstance().persistApplicationContext(applicationContext);
 
+                log.info("Application un-deployed successfully: 
[application-id] " + applicationId);
+            }
         }
 
+
+
+
+
     }
 
 
@@ -1137,7 +1164,7 @@ public class AutoscalerServiceImpl implements 
AutoscalerService {
             PartitionRef[] partitions = networkPartitionRef.getPartitionRefs();
             if (null == partitions || partitions.length == 0) {
                 String msg = String.format("Network partition does not have 
any partition references: "
-                        + "[deployment-policy-id] %s [network-partition-id] 
%s", deploymentPolicyId,
+                                + "[deployment-policy-id] %s 
[network-partition-id] %s", deploymentPolicyId,
                         networkPartitionId);
                 log.error(msg);
                 throw new InvalidDeploymentPolicyException(msg);
@@ -1190,23 +1217,20 @@ public class AutoscalerServiceImpl implements 
AutoscalerService {
                             
addNewPartitionsToClusterMonitor(clusterLevelNetworkPartitionContext, 
networkPartition,
                                     deploymentPolicy.getDeploymentPolicyID(),
                                     
clusterMonitor.getClusterContext().getServiceId());
-                        }
-                        catch (RemoteException e) {
+                        } catch (RemoteException e) {
 
                             String message =
                                     "Connection to cloud controller failed, 
Cluster monitor update failed for" +
                                             " [deployment-policy] " + 
deploymentPolicy.getDeploymentPolicyID();
                             log.error(message);
                             throw new 
CloudControllerConnectionException(message, e);
-                        }
-                        catch 
(CloudControllerServiceInvalidPartitionExceptionException e) {
+                        } catch 
(CloudControllerServiceInvalidPartitionExceptionException e) {
 
                             String message = "Invalid partition, Cluster 
monitor update failed for [deployment-policy] "
                                     + deploymentPolicy.getDeploymentPolicyID();
                             log.error(message);
                             throw new 
InvalidDeploymentPolicyException(message, e);
-                        }
-                        catch 
(CloudControllerServiceInvalidCartridgeTypeExceptionException e) {
+                        } catch 
(CloudControllerServiceInvalidCartridgeTypeExceptionException e) {
 
                             String message =
                                     "Invalid cartridge type, Cluster monitor 
update failed for [deployment-policy] "
@@ -1325,8 +1349,7 @@ public class AutoscalerServiceImpl implements 
AutoscalerService {
         try {
             Collection<DeploymentPolicy> deploymentPolicies = 
PolicyManager.getInstance().getDeploymentPolicies();
             return deploymentPolicies.toArray(new 
DeploymentPolicy[deploymentPolicies.size()]);
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             String message = "Could not get deployment policies";
             log.error(message);
             throw new AutoScalerException(message, e);

http://git-wip-us.apache.org/repos/asf/stratos/blob/45228ba3/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/util/AutoscalerUtil.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/util/AutoscalerUtil.java
 
b/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/util/AutoscalerUtil.java
index 3d80094..a639673 100644
--- 
a/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/util/AutoscalerUtil.java
+++ 
b/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/util/AutoscalerUtil.java
@@ -31,10 +31,12 @@ import 
org.apache.stratos.autoscaler.applications.pojo.ApplicationContext;
 import org.apache.stratos.autoscaler.applications.pojo.CartridgeContext;
 import org.apache.stratos.autoscaler.applications.pojo.ComponentContext;
 import org.apache.stratos.autoscaler.applications.pojo.GroupContext;
+import org.apache.stratos.autoscaler.applications.topic.ApplicationBuilder;
 import org.apache.stratos.autoscaler.context.AutoscalerContext;
 import org.apache.stratos.autoscaler.context.InstanceContext;
 import org.apache.stratos.autoscaler.context.cluster.ClusterInstanceContext;
 import 
org.apache.stratos.autoscaler.context.partition.network.NetworkPartitionContext;
+import 
org.apache.stratos.autoscaler.event.publisher.ClusterStatusEventPublisher;
 import org.apache.stratos.autoscaler.exception.AutoScalerException;
 import org.apache.stratos.autoscaler.exception.application.*;
 import 
org.apache.stratos.autoscaler.exception.policy.ApplicatioinPolicyNotExistsException;
@@ -44,10 +46,12 @@ import org.apache.stratos.autoscaler.monitor.MonitorFactory;
 import org.apache.stratos.autoscaler.monitor.cluster.ClusterMonitor;
 import org.apache.stratos.autoscaler.monitor.component.ApplicationMonitor;
 import org.apache.stratos.autoscaler.monitor.component.GroupMonitor;
+import org.apache.stratos.autoscaler.monitor.component.ParentComponentMonitor;
 import org.apache.stratos.autoscaler.pojo.policy.PolicyManager;
 import org.apache.stratos.autoscaler.pojo.policy.deployment.ApplicationPolicy;
 import org.apache.stratos.autoscaler.pojo.policy.deployment.DeploymentPolicy;
 import org.apache.stratos.autoscaler.registry.RegistryManager;
+import org.apache.stratos.cloud.controller.stub.domain.MemberContext;
 import org.apache.stratos.common.Properties;
 import org.apache.stratos.common.Property;
 import org.apache.stratos.common.client.CloudControllerServiceClient;
@@ -57,6 +61,7 @@ import 
org.apache.stratos.messaging.domain.application.Application;
 import org.apache.stratos.messaging.domain.application.Applications;
 import org.apache.stratos.messaging.domain.application.ClusterDataHolder;
 import org.apache.stratos.messaging.domain.application.Group;
+import org.apache.stratos.messaging.domain.instance.Instance;
 import org.apache.stratos.messaging.domain.topology.Service;
 import org.apache.stratos.messaging.domain.topology.Topology;
 import org.apache.stratos.messaging.message.receiver.topology.TopologyManager;
@@ -1017,4 +1022,37 @@ public class AutoscalerUtil {
         }
     }
 
+
+    public static void handleForceTermination(Collection<Monitor> monitors, 
Monitor parentMonitor, String applicationId) {
+        Iterator<Monitor> monitorsIter = monitors.iterator();
+        while(monitorsIter.hasNext()) {
+            Monitor monitor = monitorsIter.next();
+            monitor.destroy();
+            Iterator<Instance> instances = monitor.getInstances().iterator();
+            while(instances.hasNext()) {
+                Instance instance = instances.next();
+                if (monitor instanceof GroupMonitor) {
+                    
ApplicationBuilder.handleGroupInstanceTerminatedEvent(applicationId,
+                            monitor.getId(), instance.getInstanceId());
+                } else {
+                    
ClusterStatusEventPublisher.sendClusterTerminatedEvent(applicationId,
+                            ((ClusterMonitor) monitor).getServiceId(), 
monitor.getId(), instance.getInstanceId());
+                }
+            }
+            if(monitor instanceof ParentComponentMonitor) {
+                ParentComponentMonitor pMonitor = 
(ParentComponentMonitor)parentMonitor;
+                if (!monitor.hasInstance()) {
+                    (pMonitor).removeMonitor(monitor.getId());
+                }
+                Collection<Monitor> childMonitors = pMonitor.
+                        getAliasToActiveChildMonitorsMap().values();
+                if(!childMonitors.isEmpty()) {
+                    handleForceTermination(childMonitors, monitor, 
applicationId);
+                }
+            }
+
+        }
+
+    }
+
 }

http://git-wip-us.apache.org/repos/asf/stratos/blob/45228ba3/components/org.apache.stratos.messaging/activemq-data/testBroker/KahaDB/db-1.log
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.messaging/activemq-data/testBroker/KahaDB/db-1.log
 
b/components/org.apache.stratos.messaging/activemq-data/testBroker/KahaDB/db-1.log
new file mode 100644
index 0000000..f63147c
Binary files /dev/null and 
b/components/org.apache.stratos.messaging/activemq-data/testBroker/KahaDB/db-1.log
 differ

http://git-wip-us.apache.org/repos/asf/stratos/blob/45228ba3/components/org.apache.stratos.messaging/activemq-data/testBroker/KahaDB/db.data
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.messaging/activemq-data/testBroker/KahaDB/db.data
 
b/components/org.apache.stratos.messaging/activemq-data/testBroker/KahaDB/db.data
new file mode 100644
index 0000000..e3832b7
Binary files /dev/null and 
b/components/org.apache.stratos.messaging/activemq-data/testBroker/KahaDB/db.data
 differ

http://git-wip-us.apache.org/repos/asf/stratos/blob/45228ba3/components/org.apache.stratos.messaging/activemq-data/testBroker/KahaDB/db.redo
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.messaging/activemq-data/testBroker/KahaDB/db.redo
 
b/components/org.apache.stratos.messaging/activemq-data/testBroker/KahaDB/db.redo
new file mode 100644
index 0000000..b03cc50
Binary files /dev/null and 
b/components/org.apache.stratos.messaging/activemq-data/testBroker/KahaDB/db.redo
 differ

http://git-wip-us.apache.org/repos/asf/stratos/blob/45228ba3/products/stratos/modules/integration/test-integration/src/test/java/org/apache/stratos/integration/tests/application/ApplicationUpdateTest.java
----------------------------------------------------------------------
diff --git 
a/products/stratos/modules/integration/test-integration/src/test/java/org/apache/stratos/integration/tests/application/ApplicationUpdateTest.java
 
b/products/stratos/modules/integration/test-integration/src/test/java/org/apache/stratos/integration/tests/application/ApplicationUpdateTest.java
index 7148660..a7c1a89 100644
--- 
a/products/stratos/modules/integration/test-integration/src/test/java/org/apache/stratos/integration/tests/application/ApplicationUpdateTest.java
+++ 
b/products/stratos/modules/integration/test-integration/src/test/java/org/apache/stratos/integration/tests/application/ApplicationUpdateTest.java
@@ -24,16 +24,11 @@ import org.apache.commons.logging.LogFactory;
 import org.apache.stratos.common.beans.application.ApplicationBean;
 import org.apache.stratos.common.beans.cartridge.CartridgeGroupBean;
 import org.apache.stratos.common.beans.policy.deployment.ApplicationPolicyBean;
-<<<<<<< 
HEAD:products/stratos/modules/integration/test-integration/src/test/java/org/apache/stratos/integration/tests/application/ApplicationUpdateTest.java
 import org.apache.stratos.integration.common.RestConstants;
 import org.apache.stratos.integration.common.TopologyHandler;
 import org.apache.stratos.integration.tests.StratosIntegrationTest;
-=======
-import org.apache.stratos.integration.tests.RestConstants;
-import org.apache.stratos.integration.tests.StratosTestServerManager;
-import org.apache.stratos.integration.tests.TopologyHandler;
+import org.apache.stratos.integration.common.TopologyHandler;
 import org.apache.stratos.messaging.domain.application.Application;
->>>>>>> Support application update in the Applications 
Topology:products/stratos/modules/integration/src/test/java/org/apache/stratos/integration/tests/application/ApplicationUpdateTest.java
 import org.apache.stratos.messaging.domain.application.ApplicationStatus;
 import org.apache.stratos.messaging.domain.application.ClusterDataHolder;
 import org.apache.stratos.messaging.domain.application.Group;

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