YARN-5956. Refactor ClientRMService for unify error handling across apis. Contributed by Kai Sasaki.

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ClientRMService.java

@@ -194,7 +194,7 @@ public class ClientRMService extends AbstractService implements
   protected RMDelegationTokenSecretManager rmDTSecretManager;
 
   private final RecordFactory recordFactory = RecordFactoryProvider.getRecordFactory(null);
-  InetSocketAddress clientBindAddress;
+  private InetSocketAddress clientBindAddress;
 
   private final ApplicationACLsManager applicationsACLsManager;
   private final QueueACLsManager queueACLsManager;
@@ -204,9 +204,6 @@ public class ClientRMService extends AbstractService implements
   private ReservationSystem reservationSystem;
   private ReservationInputValidator rValidator;
 
-  private static final EnumSet<RMAppState> COMPLETED_APP_STATES = EnumSet.of(
-      RMAppState.FINISHED, RMAppState.FINISHING, RMAppState.FAILED,
-      RMAppState.KILLED, RMAppState.FINAL_SAVING, RMAppState.KILLING);
   private static final EnumSet<RMAppState> ACTIVE_APP_STATES = EnumSet.of(
       RMAppState.ACCEPTED, RMAppState.RUNNING);
 
@@ -296,11 +293,12 @@ public class ClientRMService extends AbstractService implements
 
   /**
    * check if the calling user has the access to application information.
-   * @param callerUGI
-   * @param owner
-   * @param operationPerformed
-   * @param application
-   * @return
+   * @param callerUGI the user information who submit the request
+   * @param owner the user of the application
+   * @param operationPerformed the type of operation defined in
+   *        {@link ApplicationAccessType}
+   * @param application submitted application
+   * @return access is permitted or not
    */
   private boolean checkAccess(UserGroupInformation callerUGI, String owner,
       ApplicationAccessType operationPerformed, RMApp application) {
@@ -377,24 +375,15 @@ public class ClientRMService extends AbstractService implements
   public GetApplicationAttemptReportResponse getApplicationAttemptReport(
       GetApplicationAttemptReportRequest request) throws YarnException,
       IOException {
+    ApplicationId applicationId
+      = request.getApplicationAttemptId().getApplicationId();
     ApplicationAttemptId appAttemptId = request.getApplicationAttemptId();
-    UserGroupInformation callerUGI;
-    try {
-      callerUGI = UserGroupInformation.getCurrentUser();
-    } catch (IOException ie) {
-      LOG.info("Error getting UGI ", ie);
-      throw RPCUtil.getRemoteException(ie);
-    }
-    RMApp application = this.rmContext.getRMApps().get(
-        appAttemptId.getApplicationId());
-    if (application == null) {
-      // If the RM doesn't have the application, throw
-      // ApplicationNotFoundException and let client to handle.
-      throw new ApplicationNotFoundException("Application with id '"
-          + request.getApplicationAttemptId().getApplicationId()
-          + "' doesn't exist in RM. Please check that the job "
-          + "submission was successful.");
-    }
+
+    UserGroupInformation callerUGI = getCallerUgi(applicationId,
+      AuditConstants.GET_APP_ATTEMPT_REPORT);
+    RMApp application = verifyUserAccessForRMApp(applicationId, callerUGI,
+       AuditConstants.GET_APP_ATTEMPT_REPORT, ApplicationAccessType.VIEW_APP,
+       false);
 
     boolean allowAccess = checkAccess(callerUGI, application.getUser(),
         ApplicationAccessType.VIEW_APP, application);
@@ -420,21 +409,13 @@ public class ClientRMService extends AbstractService implements
   public GetApplicationAttemptsResponse getApplicationAttempts(
       GetApplicationAttemptsRequest request) throws YarnException, IOException {
     ApplicationId appId = request.getApplicationId();
-    UserGroupInformation callerUGI;
-    try {
-      callerUGI = UserGroupInformation.getCurrentUser();
-    } catch (IOException ie) {
-      LOG.info("Error getting UGI ", ie);
-      throw RPCUtil.getRemoteException(ie);
-    }
-    RMApp application = this.rmContext.getRMApps().get(appId);
-    if (application == null) {
-      // If the RM doesn't have the application, throw
-      // ApplicationNotFoundException and let client to handle.
-      throw new ApplicationNotFoundException("Application with id '" + appId
-          + "' doesn't exist in RM. Please check that the job submission "
-          + "was successful.");
-    }
+
+    UserGroupInformation callerUGI = getCallerUgi(appId,
+      AuditConstants.GET_APP_ATTEMPTS);
+    RMApp application = verifyUserAccessForRMApp(appId, callerUGI,
+      AuditConstants.GET_APP_ATTEMPTS, ApplicationAccessType.VIEW_APP,
+      false);
+
     boolean allowAccess = checkAccess(callerUGI, application.getUser(),
         ApplicationAccessType.VIEW_APP, application);
     GetApplicationAttemptsResponse response = null;
@@ -469,21 +450,13 @@ public class ClientRMService extends AbstractService implements
     ContainerId containerId = request.getContainerId();
     ApplicationAttemptId appAttemptId = containerId.getApplicationAttemptId();
     ApplicationId appId = appAttemptId.getApplicationId();
-    UserGroupInformation callerUGI;
-    try {
-      callerUGI = UserGroupInformation.getCurrentUser();
-    } catch (IOException ie) {
-      LOG.info("Error getting UGI ", ie);
-      throw RPCUtil.getRemoteException(ie);
-    }
-    RMApp application = this.rmContext.getRMApps().get(appId);
-    if (application == null) {
-      // If the RM doesn't have the application, throw
-      // ApplicationNotFoundException and let client to handle.
-      throw new ApplicationNotFoundException("Application with id '" + appId
-          + "' doesn't exist in RM. Please check that the job submission "
-          + "was successful.");
-    }
+
+    UserGroupInformation callerUGI = getCallerUgi(appId,
+        AuditConstants.GET_CONTAINER_REPORT);
+    RMApp application = verifyUserAccessForRMApp(appId, callerUGI,
+        AuditConstants.GET_CONTAINER_REPORT, ApplicationAccessType.VIEW_APP,
+        false);
+
     boolean allowAccess = checkAccess(callerUGI, application.getUser(),
         ApplicationAccessType.VIEW_APP, application);
     GetContainerReportResponse response = null;
@@ -494,13 +467,13 @@ public class ClientRMService extends AbstractService implements
             "ApplicationAttempt with id '" + appAttemptId +
             "' doesn't exist in RM.");
       }
-      RMContainer rmConatiner = this.rmContext.getScheduler().getRMContainer(
+      RMContainer rmContainer = this.rmContext.getScheduler().getRMContainer(
           containerId);
-      if (rmConatiner == null) {
+      if (rmContainer == null) {
         throw new ContainerNotFoundException("Container with id '" + containerId
             + "' doesn't exist in RM.");
       }
-      response = GetContainerReportResponse.newInstance(rmConatiner
+      response = GetContainerReportResponse.newInstance(rmContainer
           .createContainerReport());
     } else {
       throw new YarnException("User " + callerUGI.getShortUserName()
@@ -520,21 +493,13 @@ public class ClientRMService extends AbstractService implements
       throws YarnException, IOException {
     ApplicationAttemptId appAttemptId = request.getApplicationAttemptId();
     ApplicationId appId = appAttemptId.getApplicationId();
-    UserGroupInformation callerUGI;
-    try {
-      callerUGI = UserGroupInformation.getCurrentUser();
-    } catch (IOException ie) {
-      LOG.info("Error getting UGI ", ie);
-      throw RPCUtil.getRemoteException(ie);
-    }
-    RMApp application = this.rmContext.getRMApps().get(appId);
-    if (application == null) {
-      // If the RM doesn't have the application, throw
-      // ApplicationNotFoundException and let client to handle.
-      throw new ApplicationNotFoundException("Application with id '" + appId
-          + "' doesn't exist in RM. Please check that the job submission "
-          + "was successful.");
-    }
+
+    UserGroupInformation callerUGI = getCallerUgi(appId,
+        AuditConstants.GET_CONTAINERS);
+    RMApp application = verifyUserAccessForRMApp(appId, callerUGI,
+        AuditConstants.GET_CONTAINERS, ApplicationAccessType.VIEW_APP,
+        false);
+
     boolean allowAccess = checkAccess(callerUGI, application.getUser(),
         ApplicationAccessType.VIEW_APP, application);
     GetContainersResponse response = null;
@@ -651,9 +616,8 @@ public class ClientRMService extends AbstractService implements
       throw e;
     }
 
-    SubmitApplicationResponse response = recordFactory
+    return recordFactory
         .newRecordInstance(SubmitApplicationResponse.class);
-    return response;
   }
 
   @SuppressWarnings("unchecked")
@@ -664,26 +628,11 @@ public class ClientRMService extends AbstractService implements
     ApplicationAttemptId attemptId = request.getApplicationAttemptId();
     ApplicationId applicationId = attemptId.getApplicationId();
 
-    UserGroupInformation callerUGI;
-    try {
-      callerUGI = UserGroupInformation.getCurrentUser();
-    } catch (IOException ie) {
-      LOG.info("Error getting UGI ", ie);
-      RMAuditLogger.logFailure("UNKNOWN", AuditConstants.FAIL_ATTEMPT_REQUEST,
-          "UNKNOWN", "ClientRMService" , "Error getting UGI",
-          applicationId, attemptId);
-      throw RPCUtil.getRemoteException(ie);
-    }
-
-    RMApp application = this.rmContext.getRMApps().get(applicationId);
-    if (application == null) {
-      RMAuditLogger.logFailure(callerUGI.getUserName(),
-          AuditConstants.FAIL_ATTEMPT_REQUEST, "UNKNOWN", "ClientRMService",
-          "Trying to fail an attempt of an absent application", applicationId,
-          attemptId);
-      throw new ApplicationNotFoundException("Trying to fail an attempt "
-          + attemptId + " of an absent application " + applicationId);
-    }
+    UserGroupInformation callerUGI = getCallerUgi(applicationId,
+        AuditConstants.FAIL_ATTEMPT_REQUEST);
+    RMApp application = verifyUserAccessForRMApp(applicationId, callerUGI,
+        AuditConstants.FAIL_ATTEMPT_REQUEST, ApplicationAccessType.MODIFY_APP,
+       true);
 
     RMAppAttempt appAttempt = application.getAppAttempts().get(attemptId);
     if (appAttempt == null) {
@@ -691,28 +640,14 @@ public class ClientRMService extends AbstractService implements
           "ApplicationAttempt with id '" + attemptId + "' doesn't exist in RM.");
     }
 
-    if (!checkAccess(callerUGI, application.getUser(),
-        ApplicationAccessType.MODIFY_APP, application)) {
-      RMAuditLogger.logFailure(callerUGI.getShortUserName(),
-          AuditConstants.FAIL_ATTEMPT_REQUEST,
-          "User doesn't have permissions to "
-              + ApplicationAccessType.MODIFY_APP.toString(), "ClientRMService",
-          AuditConstants.UNAUTHORIZED_USER, applicationId);
-      throw RPCUtil.getRemoteException(new AccessControlException("User "
-          + callerUGI.getShortUserName() + " cannot perform operation "
-          + ApplicationAccessType.MODIFY_APP.name() + " on " + applicationId));
-    }
-
     FailApplicationAttemptResponse response =
         recordFactory.newRecordInstance(FailApplicationAttemptResponse.class);
 
-    if (!ACTIVE_APP_STATES.contains(application.getState())) {
-      if (COMPLETED_APP_STATES.contains(application.getState())) {
-        RMAuditLogger.logSuccess(callerUGI.getShortUserName(),
-            AuditConstants.FAIL_ATTEMPT_REQUEST, "ClientRMService",
-            applicationId);
-        return response;
-      }
+    if (application.isAppInCompletedStates()) {
+      RMAuditLogger.logSuccess(callerUGI.getShortUserName(),
+      AuditConstants.FAIL_ATTEMPT_REQUEST, "ClientRMService",
+          applicationId);
+      return response;
     }
 
     this.rmContext.getDispatcher().getEventHandler().handle(
@@ -790,7 +725,7 @@ public class ClientRMService extends AbstractService implements
         .handle(new RMAppKillByClientEvent(applicationId, message.toString(),
             callerUGI, remoteAddress));
 
-    // For UnmanagedAMs, return true so they don't retry
+    // For Unmanaged AMs, return true so they don't retry
     return KillApplicationResponse.newInstance(
         application.getApplicationSubmissionContext().getUnmanagedAM());
   }
@@ -1082,15 +1017,15 @@ public class ClientRMService extends AbstractService implements
       RMDelegationTokenIdentifier tokenIdentifier =
           new RMDelegationTokenIdentifier(owner, new Text(request.getRenewer()), 
               realUser);
-      Token<RMDelegationTokenIdentifier> realRMDTtoken =
+      Token<RMDelegationTokenIdentifier> realRMDToken =
           new Token<RMDelegationTokenIdentifier>(tokenIdentifier,
               this.rmDTSecretManager);
       response.setRMDelegationToken(
           BuilderUtils.newDelegationToken(
-              realRMDTtoken.getIdentifier(),
-              realRMDTtoken.getKind().toString(),
-              realRMDTtoken.getPassword(),
-              realRMDTtoken.getService().toString()
+              realRMDToken.getIdentifier(),
+              realRMDToken.getKind().toString(),
+              realRMDToken.getPassword(),
+              realRMDToken.getService().toString()
               ));
       return response;
     } catch(IOException io) {
@@ -1150,37 +1085,11 @@ public class ClientRMService extends AbstractService implements
       MoveApplicationAcrossQueuesRequest request) throws YarnException {
     ApplicationId applicationId = request.getApplicationId();
 
-    UserGroupInformation callerUGI;
-    try {
-      callerUGI = UserGroupInformation.getCurrentUser();
-    } catch (IOException ie) {
-      LOG.info("Error getting UGI ", ie);
-      RMAuditLogger.logFailure("UNKNOWN", AuditConstants.MOVE_APP_REQUEST,
-          "UNKNOWN", "ClientRMService" , "Error getting UGI",
-          applicationId);
-      throw RPCUtil.getRemoteException(ie);
-    }
-
-    RMApp application = this.rmContext.getRMApps().get(applicationId);
-    if (application == null) {
-      RMAuditLogger.logFailure(callerUGI.getUserName(),
-          AuditConstants.MOVE_APP_REQUEST, "UNKNOWN", "ClientRMService",
-          "Trying to move an absent application", applicationId);
-      throw new ApplicationNotFoundException("Trying to move an absent"
-          + " application " + applicationId);
-    }
-
-    if (!checkAccess(callerUGI, application.getUser(),
-        ApplicationAccessType.MODIFY_APP, application)) {
-      RMAuditLogger.logFailure(callerUGI.getShortUserName(),
-          AuditConstants.MOVE_APP_REQUEST,
-          "User doesn't have permissions to "
-              + ApplicationAccessType.MODIFY_APP.toString(), "ClientRMService",
-          AuditConstants.UNAUTHORIZED_USER, applicationId);
-      throw RPCUtil.getRemoteException(new AccessControlException("User "
-          + callerUGI.getShortUserName() + " cannot perform operation "
-          + ApplicationAccessType.MODIFY_APP.name() + " on " + applicationId));
-    }
+    UserGroupInformation callerUGI = getCallerUgi(applicationId,
+        AuditConstants.MOVE_APP_REQUEST);
+    RMApp application = verifyUserAccessForRMApp(applicationId, callerUGI,
+         AuditConstants.MOVE_APP_REQUEST, ApplicationAccessType.MODIFY_APP,
+        true);
 
     // Moves only allowed when app is in a state that means it is tracked by
     // the scheduler. Introducing SUBMITTED state also to this list as there
@@ -1206,9 +1115,8 @@ public class ClientRMService extends AbstractService implements
 
     RMAuditLogger.logSuccess(callerUGI.getShortUserName(), 
         AuditConstants.MOVE_APP_REQUEST, "ClientRMService" , applicationId);
-    MoveApplicationAcrossQueuesResponse response = recordFactory
+    return recordFactory
         .newRecordInstance(MoveApplicationAcrossQueuesResponse.class);
-    return response;
   }
 
   private String getRenewerForToken(Token<RMDelegationTokenIdentifier> token)
@@ -1247,7 +1155,7 @@ public class ClientRMService extends AbstractService implements
   @Override
   public GetNewReservationResponse getNewReservation(
       GetNewReservationRequest request) throws YarnException, IOException {
-    checkReservationSytem(AuditConstants.CREATE_NEW_RESERVATION_REQUEST);
+    checkReservationSystem(AuditConstants.CREATE_NEW_RESERVATION_REQUEST);
     GetNewReservationResponse response =
         recordFactory.newRecordInstance(GetNewReservationResponse.class);
 
@@ -1261,7 +1169,7 @@ public class ClientRMService extends AbstractService implements
   public ReservationSubmissionResponse submitReservation(
       ReservationSubmissionRequest request) throws YarnException, IOException {
     // Check if reservation system is enabled
-    checkReservationSytem(AuditConstants.SUBMIT_RESERVATION_REQUEST);
+    checkReservationSystem(AuditConstants.SUBMIT_RESERVATION_REQUEST);
     ReservationSubmissionResponse response =
         recordFactory.newRecordInstance(ReservationSubmissionResponse.class);
     ReservationId reservationId = request.getReservationId();
@@ -1320,7 +1228,7 @@ public class ClientRMService extends AbstractService implements
   public ReservationUpdateResponse updateReservation(
       ReservationUpdateRequest request) throws YarnException, IOException {
     // Check if reservation system is enabled
-    checkReservationSytem(AuditConstants.UPDATE_RESERVATION_REQUEST);
+    checkReservationSystem(AuditConstants.UPDATE_RESERVATION_REQUEST);
     ReservationUpdateResponse response =
         recordFactory.newRecordInstance(ReservationUpdateResponse.class);
     // Validate the input
@@ -1359,7 +1267,7 @@ public class ClientRMService extends AbstractService implements
   public ReservationDeleteResponse deleteReservation(
       ReservationDeleteRequest request) throws YarnException, IOException {
     // Check if reservation system is enabled
-    checkReservationSytem(AuditConstants.DELETE_RESERVATION_REQUEST);
+    checkReservationSystem(AuditConstants.DELETE_RESERVATION_REQUEST);
     ReservationDeleteResponse response =
         recordFactory.newRecordInstance(ReservationDeleteResponse.class);
     // Validate the input
@@ -1398,7 +1306,7 @@ public class ClientRMService extends AbstractService implements
   public ReservationListResponse listReservations(
         ReservationListRequest requestInfo) throws YarnException, IOException {
     // Check if reservation system is enabled
-    checkReservationSytem(AuditConstants.LIST_RESERVATION_REQUEST);
+    checkReservationSystem(AuditConstants.LIST_RESERVATION_REQUEST);
     ReservationListResponse response =
             recordFactory.newRecordInstance(ReservationListResponse.class);
 
@@ -1473,7 +1381,7 @@ public class ClientRMService extends AbstractService implements
     return response;
   }
 
-  private void checkReservationSytem(String auditConstant) throws YarnException {
+  private void checkReservationSystem(String auditConstant) throws YarnException {
     // Check if reservation is enabled
     if (reservationSystem == null) {
       throw RPCUtil.getRemoteException("Reservation is not enabled."
@@ -1592,7 +1500,8 @@ public class ClientRMService extends AbstractService implements
     UserGroupInformation callerUGI =
         getCallerUgi(applicationId, AuditConstants.UPDATE_APP_PRIORITY);
     RMApp application = verifyUserAccessForRMApp(applicationId, callerUGI,
-        AuditConstants.UPDATE_APP_PRIORITY);
+        AuditConstants.UPDATE_APP_PRIORITY, ApplicationAccessType.MODIFY_APP,
+        true);
 
     UpdateApplicationPriorityResponse response = recordFactory
         .newRecordInstance(UpdateApplicationPriorityResponse.class);
@@ -1635,9 +1544,14 @@ public class ClientRMService extends AbstractService implements
   }
 
   /**
-   * Signal a container.
+   * Send a signal to a container.
+   *
    * After the request passes some sanity check, it will be delivered
    * to RMNodeImpl so that the next NM heartbeat will pick up the signal request
+   * @param request request to signal a container
+   * @return the response of sending signal request
+   * @throws YarnException rpc related exception
+   * @throws IOException fail to obtain user group information
    */
   @SuppressWarnings("unchecked")
   @Override
@@ -1709,7 +1623,8 @@ public class ClientRMService extends AbstractService implements
     UserGroupInformation callerUGI =
         getCallerUgi(applicationId, AuditConstants.UPDATE_APP_TIMEOUTS);
     RMApp application = verifyUserAccessForRMApp(applicationId, callerUGI,
-        AuditConstants.UPDATE_APP_TIMEOUTS);
+        AuditConstants.UPDATE_APP_TIMEOUTS, ApplicationAccessType.MODIFY_APP,
+        true);
 
     if (applicationTimeouts.isEmpty()) {
       String message =
@@ -1728,7 +1643,7 @@ public class ClientRMService extends AbstractService implements
     if (!EnumSet
         .of(RMAppState.SUBMITTED, RMAppState.ACCEPTED, RMAppState.RUNNING)
         .contains(state)) {
-      if (COMPLETED_APP_STATES.contains(state)) {
+      if (application.isAppInCompletedStates()) {
         // If Application is in any of the final states, update timeout
         // can be skipped rather throwing exception.
         RMAuditLogger.logSuccess(callerUGI.getShortUserName(),
@@ -1773,26 +1688,35 @@ public class ClientRMService extends AbstractService implements
   }
 
   private RMApp verifyUserAccessForRMApp(ApplicationId applicationId,
-      UserGroupInformation callerUGI, String operation) throws YarnException {
+                                         UserGroupInformation callerUGI, String operation,
+                                         ApplicationAccessType accessType,
+                                         boolean needCheckAccess) throws YarnException {
     RMApp application = this.rmContext.getRMApps().get(applicationId);
     if (application == null) {
       RMAuditLogger.logFailure(callerUGI.getUserName(), operation, "UNKNOWN",
-          "ClientRMService",
-          "Trying to " + operation + " of an absent application",
-          applicationId);
-      throw new ApplicationNotFoundException("Trying to " + operation
-          + " of an absent application " + applicationId);
-    }
-
-    if (!checkAccess(callerUGI, application.getUser(),
-        ApplicationAccessType.MODIFY_APP, application)) {
-      RMAuditLogger.logFailure(callerUGI.getShortUserName(), operation,
-          "User doesn't have permissions to "
-              + ApplicationAccessType.MODIFY_APP.toString(),
-          "ClientRMService", AuditConstants.UNAUTHORIZED_USER, applicationId);
-      throw RPCUtil.getRemoteException(new AccessControlException("User "
-          + callerUGI.getShortUserName() + " cannot perform operation "
-          + ApplicationAccessType.MODIFY_APP.name() + " on " + applicationId));
+              "ClientRMService",
+              "Trying to " + operation + " of an absent application",
+              applicationId);
+      // If the RM doesn't have the application, throw
+      // ApplicationNotFoundException and let client to handle.
+      throw new ApplicationNotFoundException("Application with id '"
+              + applicationId + "' doesn't exist in RM. "
+              + "Please check that the job "
+              + "submission was successful.");
+    }
+
+    if (needCheckAccess) {
+      if (!checkAccess(callerUGI, application.getUser(),
+              accessType, application)) {
+        RMAuditLogger.logFailure(callerUGI.getShortUserName(), operation,
+                "User doesn't have permissions to "
+                        + accessType.toString(),
+                "ClientRMService", AuditConstants.UNAUTHORIZED_USER,
+                applicationId);
+        throw RPCUtil.getRemoteException(new AccessControlException("User "
+                + callerUGI.getShortUserName() + " cannot perform operation "
+                + accessType.name() + " on " + applicationId));
+      }
     }
     return application;
   }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/RMAuditLogger.java

@@ -54,6 +54,11 @@ public class RMAuditLogger {
     public static final String GET_APP_STATE = "Get Application State";
     public static final String GET_APP_PRIORITY = "Get Application Priority";
     public static final String GET_APP_QUEUE = "Get Application Queue";
+    public static final String GET_APP_ATTEMPTS = "Get Application Attempts";
+    public static final String GET_APP_ATTEMPT_REPORT
+        = "Get Application Attempt Report";
+    public static final String GET_CONTAINERS = "Get Containers";
+    public static final String GET_CONTAINER_REPORT = "Get Container Report";
     public static final String FINISH_SUCCESS_APP = "Application Finished - Succeeded";
     public static final String FINISH_FAILED_APP = "Application Finished - Failed";
     public static final String FINISH_KILLED_APP = "Application Finished - Killed";