Java 8 is deprecated. You won't be able to deploy Java 8 applications, even if your organization previously used an organization policy to re-enable deployments of legacy runtimes. Your existing Java 8 applications will continue to run and receive traffic. We recommend that you migrate to the latest supported version of Java.

AppAdmin

```
public interface AppAdmin
```
The application administration interface to App Engine. Use this API to update, configure, and otherwise manage an App Engine application. Use AppAdminFactory to retrieve an AppAdmin instance configured for a specific application.
Synchronous versus Asynchronous requests: Some requests, such as update(com.google.appengine.tools.admin.UpdateListener), occur asynchronously and must be monitored with a listener. Other requests, such as updateIndexes(), are made synchronously. In either case, work often continues to occur asynchronously on the remote server after the request has been completed.
Error handling: Most configuration operations require communicating to App Engine's remote administration server occur over a network connection. In cases where unrecoverable failures occur (such as a network failure), this API throws an AdminException.
Application updates occur transactionally. If a failure occurs during update, you must rollback() the incomplete transaction before beginning another.

Nested Class Summary

Nested Classes
Modifier and Type	Interface and Description
`static class`	`AppAdmin.LogSeverity` The severity levels for App Engine application logging.
`static class`	`AppAdmin.UpdateOptions` Settable options for configuring the behavior of update operations.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`configureBackend(java.lang.String backendName)` Reconfigure the backend with the specified name.
`java.util.List<CronEntry>`	`cronInfo()` Locally parses an application's configured cron entries and reports the upcoming several execution times.
`java.lang.String`	`debugVersion()` Sends a synchronous request to turn on debugging for the specified vm version.
`java.lang.String`	`debugVersionState()` Sends a synchronous request to get the status of a debug request for the specified version.
`void`	`deleteBackend(java.lang.String backendName)` Delete the backend with the specified name.
`java.lang.String`	`deleteVersion(java.lang.String appId, java.lang.String moduleId, java.lang.String versionId)` Sends a synchronous request to delete the specified version
`com.google.appengine.tools.admin.ResourceLimits`	`getResourceLimits()` Gets the resource limits.
`AppAdmin.UpdateOptions`	`getUpdateOptions()` Returns the `AppAdmin.UpdateOptions` for this `AppAdmin`.
`java.util.List<BackendsXml.Entry>`	`listBackends()` Retrieve a list of registered backends with their associated state.
`java.lang.String`	`listVersions()` Sends a synchronous request to retrieve the list of versions for each module.
`void`	`migrateTraffic()` Sends a synchronous request to start a traffic migration.
`java.io.Reader`	`requestLogs(int numDays, AppAdmin.LogSeverity severity, boolean includeAll)` Retrieves application logs from the remote administration server.
`void`	`rollback()` Rolls back an "in-progress" transaction.
`void`	`rollbackAllBackends()` Rolls back an "in-progress" transaction on all backends.
`void`	`rollbackBackend(java.lang.String backend)` Rolls back an "in-progress" transaction on a backend.
`void`	`setBackendState(java.lang.String backendName, BackendsXml.State newState)` Update the state of the backend with the specified name to `newState`.
`void`	`setDefaultVersion()` Sends a synchronous request to update the application's default version.
`void`	`stageApplicationWithDefaultResourceLimits(java.io.File stagingDir)` Stage an application directory with default resource limits
`void`	`stageApplicationWithRemoteResourceLimits(java.io.File stagingDir)` Stage an application directory with remote resource limits
`void`	`startModuleVersion()` Start the specified module version.
`void`	`stopModuleVersion()` Stop the specified module version.
`void`	`update(UpdateListener listener)` Uploads a new version of the application and updates its indexes.
`void`	`updateAllBackends(UpdateListener listener)` Redeploy all backends.
`void`	`updateBackend(java.lang.String backendName, UpdateListener listener)` Redeploy the backend with the specified name.
`void`	`updateBackends(java.util.List<java.lang.String> backendNames, UpdateListener listener)` Redeploy the backends with the specified names.
`void`	`updateCron()` Sends a synchronous request to update the application's cron jobs.
`void`	`updateDispatch()` Sends a synchronous request to update the application's Dispatch configuration.
`void`	`updateDos()` Sends a synchronous request to update the application's DoS configuration.
`void`	`updateIndexes()` Sends a synchronous request to update the application's indexes.
`void`	`updateQueues()` Sends a synchronous request to update the application's task queue definitions.
`void`	`vacuumIndexes(com.google.appengine.tools.admin.ConfirmationCallback<com.google.appengine.tools.admin.IndexDeleter.DeleteIndexAction> callback, UpdateListener listener)` Performs the following three steps: Queries the remote administration server for existing indexes that are not included in the local index configuration file.

- Method Detail
  - update
```
void update(UpdateListener listener)
```
    Uploads a new version of the application and updates its indexes. The update may occur asynchronously, so an UpdateListener must be installed to track progress.
    
    Parameters:
    
    listener - The listener to be notified of updates. Must not be null.
    
    Throws:
    
    AdminException - if an error occurs.
  - rollback
```
void rollback()
```
    Rolls back an "in-progress" transaction. This operation occurs synchronously.
    
    Throws:
    
    AdminException - if an error occurs.
  - rollbackBackend
```
void rollbackBackend(java.lang.String backend)
```
    Rolls back an "in-progress" transaction on a backend. This operation occurs synchronously.
    
    Parameters:
    
    backend - to rollback, or null for default app
    
    Throws:
    
    AdminException - if an error occurs.
  - rollbackAllBackends
```
void rollbackAllBackends()
```
    Rolls back an "in-progress" transaction on all backends. This operation occurs synchronously.
    
    Throws:
    
    AdminException - if an error occurs.
  - updateIndexes
```
void updateIndexes()
```
    Sends a synchronous request to update the application's indexes. This work completes asynchronously on the server.
    
    Throws:
    
    AdminException - if an error occurs.
  - updateCron
```
void updateCron()
```
    Sends a synchronous request to update the application's cron jobs. This work completes synchronously on the server.
    
    Throws:
    
    AdminException - if an error occurs.
  - updateQueues
```
void updateQueues()
```
    Sends a synchronous request to update the application's task queue definitions. This work completes synchronously on the server.
    
    Throws:
    
    AdminException - if an error occurs.
  - updateDispatch
```
void updateDispatch()
```
    Sends a synchronous request to update the application's Dispatch configuration.
    
    Throws:
    
    AdminException - if an error occurs.
  - updateDos
```
void updateDos()
```
    Sends a synchronous request to update the application's DoS configuration. This work completes synchronously on the server.
    
    Throws:
    
    AdminException - if an error occurs.
  - cronInfo
```
java.util.List<CronEntry> cronInfo()
```
    Locally parses an application's configured cron entries and reports the upcoming several execution times.
    
    Throws:
    
    AdminException - if an error occurs.
  - getResourceLimits
```
com.google.appengine.tools.admin.ResourceLimits getResourceLimits()
```
    Gets the resource limits. The values returned are a combination of values reported by the adminconsole/appserver plus locally defined defaults for any missing values.
    
    Returns:
    
    The ResourceLimits object.
    
    Throws:
    
    AdminException - if an error occurs.
  - vacuumIndexes
```
void vacuumIndexes(com.google.appengine.tools.admin.ConfirmationCallback<com.google.appengine.tools.admin.IndexDeleter.DeleteIndexAction> callback,
                   UpdateListener listener)
```
    Performs the following three steps:
    1. Queries the remote administration server for existing indexes that are not included in the local index configuration file. We will refer to these as orphaned indexes.
    2. If callback is not null, then the confirmAction method will be called once for each of the orphaned indexes to confirm that it really should be deleted.
    3. A request will be sent to the server to delete each of the confirmed indexes. This work completes asynchronously on the server.
    Parameters:
    
    callback - Used to confirm deletions. May be null in which case no confirmation will be done.
    
    listener - The listener to be notified of updates. Must not be null.
    
    Throws:
    
    AdminException - if an error occurs.
  - requestLogs
```
java.io.Reader requestLogs(int numDays,
                           AppAdmin.LogSeverity severity,
                           boolean includeAll)
```
    Retrieves application logs from the remote administration server.
    
    Parameters:
    
    numDays - The number of days to retrieve logs for. The cut-off point is midnight UTC. Use 0 to get all available logs.
    
    severity - The severity of app-level log messages to get. If null, only request logs are returned.
    
    includeAll - Include everything we know about a request, including ms, cpu_ms and so on.
    
    Returns:
    
    a non-null Reader which can be used to stream the logs from the remote administration server. You should close the Reader when you're finished reading logs. It is ok to close the Reader before all logs have been read (streaming from the server is cancelled).
    
    Throws:
    
    AdminException - if an error occurs.
  - updateBackend
```
void updateBackend(java.lang.String backendName,
                   UpdateListener listener)
```
    Redeploy the backend with the specified name.
  - updateBackends
```
void updateBackends(java.util.List<java.lang.String> backendNames,
                    UpdateListener listener)
```
    Redeploy the backends with the specified names.
  - updateAllBackends
```
void updateAllBackends(UpdateListener listener)
```
    Redeploy all backends.
  - listBackends
```
java.util.List<BackendsXml.Entry> listBackends()
```
    Retrieve a list of registered backends with their associated state.
  - setBackendState
```
void setBackendState(java.lang.String backendName,
                     BackendsXml.State newState)
```
    Update the state of the backend with the specified name to newState.
  - deleteBackend
```
void deleteBackend(java.lang.String backendName)
```
    Delete the backend with the specified name.
  - configureBackend
```
void configureBackend(java.lang.String backendName)
```
    Reconfigure the backend with the specified name.
  - startModuleVersion
```
void startModuleVersion()
```
    Start the specified module version.
  - stopModuleVersion
```
void stopModuleVersion()
```
    Stop the specified module version.
  - setDefaultVersion
```
void setDefaultVersion()
```
    Sends a synchronous request to update the application's default version. This work completes synchronously on the server.
    
    Throws:
    
    AdminException - if an error occurs.
  - listVersions
```
java.lang.String listVersions()
```
    Sends a synchronous request to retrieve the list of versions for each module.
    
    Returns:
    
    Returns the YAML server response as a String.
    
    Throws:
    
    AdminException - if an error occurs.
  - deleteVersion
```
java.lang.String deleteVersion(java.lang.String appId,
                               java.lang.String moduleId,
                               java.lang.String versionId)
```
    Sends a synchronous request to delete the specified version
    
    Parameters:
    
    appId - The application to delete the version from.
    
    moduleId - The module to delete the version from.
    
    versionId - The version to delete.
    
    Returns:
    
    Returns the YAML server response as a String
    
    Throws:
    
    AdminException - if an error occurs.
  - debugVersion
```
java.lang.String debugVersion()
```
    Sends a synchronous request to turn on debugging for the specified vm version.
    
    Returns:
    
    Returns the YAML server response as a String
    
    Throws:
    
    AdminException - if an error occurs.
  - debugVersionState
```
java.lang.String debugVersionState()
```
    Sends a synchronous request to get the status of a debug request for the specified version.
    
    Returns:
    
    Returns the YAML server response as a String
    
    Throws:
    
    AdminException - if an error occurs.
  - migrateTraffic
```
void migrateTraffic()
```
    Sends a synchronous request to start a traffic migration. This work continues asynchronously on the server.
    
    Throws:
    
    AdminException - if an error occurs.
  - stageApplicationWithDefaultResourceLimits
```
void stageApplicationWithDefaultResourceLimits(java.io.File stagingDir)
```
    Stage an application directory with default resource limits
  - stageApplicationWithRemoteResourceLimits
```
void stageApplicationWithRemoteResourceLimits(java.io.File stagingDir)
```
    Stage an application directory with remote resource limits
  - getUpdateOptions
```
AppAdmin.UpdateOptions getUpdateOptions()
```
    Returns the AppAdmin.UpdateOptions for this AppAdmin.

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Last updated 2025-06-16 UTC.

AppAdmin Stay organized with collections Save and categorize content based on your preferences.

Interface AppAdmin

Nested Class Summary

Method Summary

Method Detail

update

rollback

rollbackBackend

rollbackAllBackends

updateIndexes

updateCron

updateQueues

updateDispatch

updateDos

cronInfo

getResourceLimits

vacuumIndexes

requestLogs

updateBackend

updateBackends

updateAllBackends

listBackends

setBackendState

deleteBackend

configureBackend

startModuleVersion

stopModuleVersion

setDefaultVersion

listVersions

deleteVersion

debugVersion

debugVersionState

migrateTraffic

stageApplicationWithDefaultResourceLimits

stageApplicationWithRemoteResourceLimits

getUpdateOptions

AppAdmin