com.amazonaws.services.cognitoidentity

Interface AmazonCognitoIdentity

All Known Subinterfaces:

AmazonCognitoIdentityAsync

All Known Implementing Classes:

AbstractAmazonCognitoIdentity, AbstractAmazonCognitoIdentityAsync, AmazonCognitoIdentityAsyncClient, AmazonCognitoIdentityClient

public interface AmazonCognitoIdentity

Interface for accessing Amazon Cognito Identity.

Amazon Cognito

Amazon Cognito is a web service that delivers scoped temporary credentials to mobile devices and other untrusted environments. Amazon Cognito uniquely identifies a device and supplies the user with a consistent identity over the lifetime of an application.

Using Amazon Cognito, you can enable authentication with one or more third-party identity providers (Facebook, Google, or Login with Amazon), and you can also choose to support unauthenticated access from your app. Cognito delivers a unique identifier for each user and acts as an OpenID token provider trusted by AWS Security Token Service (STS) to access temporary, limited-privilege AWS credentials.

To provide end-user credentials, first make an unsigned call to GetId. If the end user is authenticated with one of the supported identity providers, set the Logins map with the identity provider token. GetId returns a unique identifier for the user.

Next, make an unsigned call to GetCredentialsForIdentity. This call expects the same Logins map as the GetId call, as well as the IdentityID originally returned by GetId . Assuming your identity pool has been configured via the SetIdentityPoolRoles operation, GetCredentialsForIdentity will return AWS credentials for your use. If your pool has not been configured with SetIdentityPoolRoles, or if you want to follow legacy flow, make an unsigned call to GetOpenIdToken, which returns the OpenID token necessary to call STS and retrieve AWS credentials. This call expects the same Logins map as the GetId call, as well as the IdentityID originally returned by GetId. The token returned by GetOpenIdToken can be passed to the STS operation AssumeRoleWithWebIdentity to retrieve AWS credentials.

If you want to use Amazon Cognito in an Android, iOS, or Unity application, you will probably want to make API calls via the AWS Mobile SDK. To learn more, see the AWS Mobile SDK Developer Guide.

Method Summary

Methods

Modifier and Type	Method and Description
CreateIdentityPoolResult	createIdentityPool(CreateIdentityPoolRequest createIdentityPoolRequest) Creates a new identity pool.
DeleteIdentitiesResult	deleteIdentities(DeleteIdentitiesRequest deleteIdentitiesRequest) Deletes identities from an identity pool.
void	deleteIdentityPool(DeleteIdentityPoolRequest deleteIdentityPoolRequest) Deletes a user pool.
DescribeIdentityResult	describeIdentity(DescribeIdentityRequest describeIdentityRequest) Returns metadata related to the given identity, including when the identity was created and any associated linked logins.
DescribeIdentityPoolResult	describeIdentityPool(DescribeIdentityPoolRequest describeIdentityPoolRequest) Gets details about a particular identity pool, including the pool name, ID description, creation date, and current number of users.
ResponseMetadata	getCachedResponseMetadata(AmazonWebServiceRequest request) Returns additional metadata for a previously executed successful request, typically used for debugging issues where a service isn't acting as expected.
GetCredentialsForIdentityResult	getCredentialsForIdentity(GetCredentialsForIdentityRequest getCredentialsForIdentityRequest) Returns credentials for the provided identity ID.
GetIdResult	getId(GetIdRequest getIdRequest) Generates (or retrieves) a Cognito ID.
GetIdentityPoolRolesResult	getIdentityPoolRoles(GetIdentityPoolRolesRequest getIdentityPoolRolesRequest) Gets the roles for an identity pool.
GetOpenIdTokenResult	getOpenIdToken(GetOpenIdTokenRequest getOpenIdTokenRequest) Gets an OpenID token, using a known Cognito ID.
GetOpenIdTokenForDeveloperIdentityResult	getOpenIdTokenForDeveloperIdentity(GetOpenIdTokenForDeveloperIdentityRequest getOpenIdTokenForDeveloperIdentityRequest) Registers (or retrieves) a Cognito IdentityId and an OpenID Connect token for a user authenticated by your backend authentication process.
ListIdentitiesResult	listIdentities(ListIdentitiesRequest listIdentitiesRequest) Lists the identities in a pool.
ListIdentityPoolsResult	listIdentityPools(ListIdentityPoolsRequest listIdentityPoolsRequest) Lists all of the Cognito identity pools registered for your account.
LookupDeveloperIdentityResult	lookupDeveloperIdentity(LookupDeveloperIdentityRequest lookupDeveloperIdentityRequest) Retrieves the IdentityID associated with a DeveloperUserIdentifier or the list of DeveloperUserIdentifiers associated with an IdentityId for an existing identity.
MergeDeveloperIdentitiesResult	mergeDeveloperIdentities(MergeDeveloperIdentitiesRequest mergeDeveloperIdentitiesRequest) Merges two users having different IdentityIds, existing in the same identity pool, and identified by the same developer provider.
void	setEndpoint(String endpoint) Overrides the default endpoint for this client ("https://cognito-identity.us-east-1.amazonaws.com").
void	setIdentityPoolRoles(SetIdentityPoolRolesRequest setIdentityPoolRolesRequest) Sets the roles for an identity pool.
void	setRegion(Region region) An alternative to setEndpoint(String), sets the regional endpoint for this client's service calls.
void	shutdown() Shuts down this client object, releasing any resources that might be held open.
void	unlinkDeveloperIdentity(UnlinkDeveloperIdentityRequest unlinkDeveloperIdentityRequest) Unlinks a DeveloperUserIdentifier from an existing identity.
void	unlinkIdentity(UnlinkIdentityRequest unlinkIdentityRequest) Unlinks a federated identity from an existing account.
UpdateIdentityPoolResult	updateIdentityPool(UpdateIdentityPoolRequest updateIdentityPoolRequest) Updates a user pool.

Method Detail

setEndpoint

void setEndpoint(String endpoint)

Overrides the default endpoint for this client ("https://cognito-identity.us-east-1.amazonaws.com"). Callers can use this method to control which AWS region they want to work with.

Callers can pass in just the endpoint (ex: "cognito-identity.us-east-1.amazonaws.com") or a full URL, including the protocol (ex: "https://cognito-identity.us-east-1.amazonaws.com"). If the protocol is not specified here, the default protocol from this client's ClientConfiguration will be used, which by default is HTTPS.

For more information on using AWS regions with the AWS SDK for Java, and a complete list of all available endpoints for all AWS services, see: http://developer.amazonwebservices.com/connect/entry.jspa?externalID= 3912

This method is not threadsafe. An endpoint should be configured when the client is created and before any service requests are made. Changing it afterwards creates inevitable race conditions for any service requests in transit or retrying.

Parameters:

endpoint - The endpoint (ex: "cognito-identity.us-east-1.amazonaws.com") or a full URL, including the protocol (ex: "https://cognito-identity.us-east-1.amazonaws.com") of the region specific AWS endpoint this client will communicate with.

setRegion

void setRegion(Region region)

An alternative to setEndpoint(String), sets the regional endpoint for this client's service calls. Callers can use this method to control which AWS region they want to work with.

By default, all service endpoints in all regions use the https protocol. To use http instead, specify it in the ClientConfiguration supplied at construction.

This method is not threadsafe. A region should be configured when the client is created and before any service requests are made. Changing it afterwards creates inevitable race conditions for any service requests in transit or retrying.

Parameters:

region - The region this client will communicate with. See Region.getRegion(com.amazonaws.regions.Regions) for accessing a given region. Must not be null and must be a region where the service is available.

See Also:

Region.getRegion(com.amazonaws.regions.Regions), Region.createClient(Class, com.amazonaws.auth.AWSCredentialsProvider, ClientConfiguration), Region.isServiceSupported(String)

createIdentityPool

CreateIdentityPoolResult createIdentityPool(CreateIdentityPoolRequest createIdentityPoolRequest)

Creates a new identity pool. The identity pool is a store of user identity information that is specific to your AWS account. The limit on identity pools is 60 per account. The keys for SupportedLoginProviders are as follows:

• Facebook: graph.facebook.com
• Google: accounts.google.com
• Amazon: www.amazon.com
• Twitter: api.twitter.com
• Digits: www.digits.com

You must use AWS Developer credentials to call this API.

Parameters:

createIdentityPoolRequest - Input to the CreateIdentityPool action.

Returns:

Result of the CreateIdentityPool operation returned by the service.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

ResourceConflictException - Thrown when a user tries to use a login which is already linked to another account.

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

LimitExceededException - Thrown when the total number of user pools has exceeded a preset limit.

deleteIdentities

DeleteIdentitiesResult deleteIdentities(DeleteIdentitiesRequest deleteIdentitiesRequest)

Deletes identities from an identity pool. You can specify a list of 1-60 identities that you want to delete.

You must use AWS Developer credentials to call this API.

Parameters:

deleteIdentitiesRequest - Input to the DeleteIdentities action.

Returns:

Result of the DeleteIdentities operation returned by the service.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

deleteIdentityPool

void deleteIdentityPool(DeleteIdentityPoolRequest deleteIdentityPoolRequest)

Deletes a user pool. Once a pool is deleted, users will not be able to authenticate with the pool.

You must use AWS Developer credentials to call this API.

Parameters:

deleteIdentityPoolRequest - Input to the DeleteIdentityPool action.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

ResourceNotFoundException - Thrown when the requested resource (for example, a dataset or record) does not exist.

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

describeIdentity

DescribeIdentityResult describeIdentity(DescribeIdentityRequest describeIdentityRequest)

Returns metadata related to the given identity, including when the identity was created and any associated linked logins.

You must use AWS Developer credentials to call this API.

Parameters:

describeIdentityRequest - Input to the DescribeIdentity action.

Returns:

Result of the DescribeIdentity operation returned by the service.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

ResourceNotFoundException - Thrown when the requested resource (for example, a dataset or record) does not exist.

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

describeIdentityPool

DescribeIdentityPoolResult describeIdentityPool(DescribeIdentityPoolRequest describeIdentityPoolRequest)

Gets details about a particular identity pool, including the pool name, ID description, creation date, and current number of users.

You must use AWS Developer credentials to call this API.

Parameters:

describeIdentityPoolRequest - Input to the DescribeIdentityPool action.

Returns:

Result of the DescribeIdentityPool operation returned by the service.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

ResourceNotFoundException - Thrown when the requested resource (for example, a dataset or record) does not exist.

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

getCredentialsForIdentity

GetCredentialsForIdentityResult getCredentialsForIdentity(GetCredentialsForIdentityRequest getCredentialsForIdentityRequest)

Returns credentials for the provided identity ID. Any provided logins will be validated against supported login providers. If the token is for cognito-identity.amazonaws.com, it will be passed through to AWS Security Token Service with the appropriate role for the token.

This is a public API. You do not need any credentials to call this API.

Parameters:

getCredentialsForIdentityRequest - Input to the GetCredentialsForIdentity action.

Returns:

Result of the GetCredentialsForIdentity operation returned by the service.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

ResourceNotFoundException - Thrown when the requested resource (for example, a dataset or record) does not exist.

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

ResourceConflictException - Thrown when a user tries to use a login which is already linked to another account.

TooManyRequestsException - Thrown when a request is throttled.

InvalidIdentityPoolConfigurationException - Thrown if the identity pool has no role associated for the given auth type (auth/unauth) or if the AssumeRole fails.

InternalErrorException - Thrown when the service encounters an error during processing the request.

ExternalServiceException - An exception thrown when a dependent service such as Facebook or Twitter is not responding

getId

GetIdResult getId(GetIdRequest getIdRequest)

Generates (or retrieves) a Cognito ID. Supplying multiple logins will create an implicit linked account.

This is a public API. You do not need any credentials to call this API.

Parameters:

getIdRequest - Input to the GetId action.

Returns:

Result of the GetId operation returned by the service.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

ResourceNotFoundException - Thrown when the requested resource (for example, a dataset or record) does not exist.

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

ResourceConflictException - Thrown when a user tries to use a login which is already linked to another account.

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

LimitExceededException - Thrown when the total number of user pools has exceeded a preset limit.

ExternalServiceException - An exception thrown when a dependent service such as Facebook or Twitter is not responding

getIdentityPoolRoles

GetIdentityPoolRolesResult getIdentityPoolRoles(GetIdentityPoolRolesRequest getIdentityPoolRolesRequest)

Gets the roles for an identity pool.

You must use AWS Developer credentials to call this API.

Parameters:

getIdentityPoolRolesRequest - Input to the GetIdentityPoolRoles action.

Returns:

Result of the GetIdentityPoolRoles operation returned by the service.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

ResourceNotFoundException - Thrown when the requested resource (for example, a dataset or record) does not exist.

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

ResourceConflictException - Thrown when a user tries to use a login which is already linked to another account.

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

getOpenIdToken

GetOpenIdTokenResult getOpenIdToken(GetOpenIdTokenRequest getOpenIdTokenRequest)

Gets an OpenID token, using a known Cognito ID. This known Cognito ID is returned by GetId. You can optionally add additional logins for the identity. Supplying multiple logins creates an implicit link.

The OpenId token is valid for 15 minutes.

This is a public API. You do not need any credentials to call this API.

Parameters:

getOpenIdTokenRequest - Input to the GetOpenIdToken action.

Returns:

Result of the GetOpenIdToken operation returned by the service.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

ResourceNotFoundException - Thrown when the requested resource (for example, a dataset or record) does not exist.

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

ResourceConflictException - Thrown when a user tries to use a login which is already linked to another account.

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

ExternalServiceException - An exception thrown when a dependent service such as Facebook or Twitter is not responding

getOpenIdTokenForDeveloperIdentity

GetOpenIdTokenForDeveloperIdentityResult getOpenIdTokenForDeveloperIdentity(GetOpenIdTokenForDeveloperIdentityRequest getOpenIdTokenForDeveloperIdentityRequest)

Registers (or retrieves) a Cognito IdentityId and an OpenID Connect token for a user authenticated by your backend authentication process. Supplying multiple logins will create an implicit linked account. You can only specify one developer provider as part of the Logins map, which is linked to the identity pool. The developer provider is the "domain" by which Cognito will refer to your users.

You can use GetOpenIdTokenForDeveloperIdentity to create a new identity and to link new logins (that is, user credentials issued by a public provider or developer provider) to an existing identity. When you want to create a new identity, the IdentityId should be null. When you want to associate a new login with an existing authenticated/unauthenticated identity, you can do so by providing the existing IdentityId. This API will create the identity in the specified IdentityPoolId.

You must use AWS Developer credentials to call this API.

Parameters:

getOpenIdTokenForDeveloperIdentityRequest - Input to the GetOpenIdTokenForDeveloperIdentity action.

Returns:

Result of the GetOpenIdTokenForDeveloperIdentity operation returned by the service.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

ResourceNotFoundException - Thrown when the requested resource (for example, a dataset or record) does not exist.

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

ResourceConflictException - Thrown when a user tries to use a login which is already linked to another account.

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

DeveloperUserAlreadyRegisteredException - The provided developer user identifier is already registered with Cognito under a different identity ID.

listIdentities

ListIdentitiesResult listIdentities(ListIdentitiesRequest listIdentitiesRequest)

Lists the identities in a pool.

You must use AWS Developer credentials to call this API.

Parameters:

listIdentitiesRequest - Input to the ListIdentities action.

Returns:

Result of the ListIdentities operation returned by the service.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

ResourceNotFoundException - Thrown when the requested resource (for example, a dataset or record) does not exist.

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

listIdentityPools

ListIdentityPoolsResult listIdentityPools(ListIdentityPoolsRequest listIdentityPoolsRequest)

Lists all of the Cognito identity pools registered for your account.

You must use AWS Developer credentials to call this API.

Parameters:

listIdentityPoolsRequest - Input to the ListIdentityPools action.

Returns:

Result of the ListIdentityPools operation returned by the service.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

lookupDeveloperIdentity

LookupDeveloperIdentityResult lookupDeveloperIdentity(LookupDeveloperIdentityRequest lookupDeveloperIdentityRequest)

Retrieves the IdentityID associated with a DeveloperUserIdentifier or the list of DeveloperUserIdentifiers associated with an IdentityId for an existing identity. Either IdentityID or DeveloperUserIdentifier must not be null. If you supply only one of these values, the other value will be searched in the database and returned as a part of the response. If you supply both, DeveloperUserIdentifier will be matched against IdentityID. If the values are verified against the database, the response returns both values and is the same as the request. Otherwise a ResourceConflictException is thrown.

You must use AWS Developer credentials to call this API.

Parameters:

lookupDeveloperIdentityRequest - Input to the LookupDeveloperIdentityInput action.

Returns:

Result of the LookupDeveloperIdentity operation returned by the service.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

ResourceNotFoundException - Thrown when the requested resource (for example, a dataset or record) does not exist.

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

ResourceConflictException - Thrown when a user tries to use a login which is already linked to another account.

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

mergeDeveloperIdentities

MergeDeveloperIdentitiesResult mergeDeveloperIdentities(MergeDeveloperIdentitiesRequest mergeDeveloperIdentitiesRequest)

Merges two users having different IdentityIds, existing in the same identity pool, and identified by the same developer provider. You can use this action to request that discrete users be merged and identified as a single user in the Cognito environment. Cognito associates the given source user (SourceUserIdentifier) with the IdentityId of the DestinationUserIdentifier . Only developer-authenticated users can be merged. If the users to be merged are associated with the same public provider, but as two different users, an exception will be thrown.

You must use AWS Developer credentials to call this API.

Parameters:

mergeDeveloperIdentitiesRequest - Input to the MergeDeveloperIdentities action.

Returns:

Result of the MergeDeveloperIdentities operation returned by the service.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

ResourceNotFoundException - Thrown when the requested resource (for example, a dataset or record) does not exist.

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

ResourceConflictException - Thrown when a user tries to use a login which is already linked to another account.

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

setIdentityPoolRoles

void setIdentityPoolRoles(SetIdentityPoolRolesRequest setIdentityPoolRolesRequest)

Sets the roles for an identity pool. These roles are used when making calls to GetCredentialsForIdentity action.

You must use AWS Developer credentials to call this API.

Parameters:

setIdentityPoolRolesRequest - Input to the SetIdentityPoolRoles action.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

ResourceNotFoundException - Thrown when the requested resource (for example, a dataset or record) does not exist.

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

ResourceConflictException - Thrown when a user tries to use a login which is already linked to another account.

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

ConcurrentModificationException - Thrown if there are parallel requests to modify a resource.

unlinkDeveloperIdentity

void unlinkDeveloperIdentity(UnlinkDeveloperIdentityRequest unlinkDeveloperIdentityRequest)

Unlinks a DeveloperUserIdentifier from an existing identity. Unlinked developer users will be considered new identities next time they are seen. If, for a given Cognito identity, you remove all federated identities as well as the developer user identifier, the Cognito identity becomes inaccessible.

You must use AWS Developer credentials to call this API.

Parameters:

unlinkDeveloperIdentityRequest - Input to the UnlinkDeveloperIdentity action.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

ResourceNotFoundException - Thrown when the requested resource (for example, a dataset or record) does not exist.

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

ResourceConflictException - Thrown when a user tries to use a login which is already linked to another account.

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

unlinkIdentity

void unlinkIdentity(UnlinkIdentityRequest unlinkIdentityRequest)

Unlinks a federated identity from an existing account. Unlinked logins will be considered new identities next time they are seen. Removing the last linked login will make this identity inaccessible.

This is a public API. You do not need any credentials to call this API.

Parameters:

unlinkIdentityRequest - Input to the UnlinkIdentity action.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

ResourceNotFoundException - Thrown when the requested resource (for example, a dataset or record) does not exist.

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

ResourceConflictException - Thrown when a user tries to use a login which is already linked to another account.

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

ExternalServiceException - An exception thrown when a dependent service such as Facebook or Twitter is not responding

updateIdentityPool

UpdateIdentityPoolResult updateIdentityPool(UpdateIdentityPoolRequest updateIdentityPoolRequest)

Updates a user pool.

You must use AWS Developer credentials to call this API.

Parameters:

updateIdentityPoolRequest - An object representing a Cognito identity pool.

Returns:

Result of the UpdateIdentityPool operation returned by the service.

Throws:

InvalidParameterException - Thrown for missing or bad input parameter(s).

ResourceNotFoundException - Thrown when the requested resource (for example, a dataset or record) does not exist.

NotAuthorizedException - Thrown when a user is not authorized to access the requested resource.

ResourceConflictException - Thrown when a user tries to use a login which is already linked to another account.

TooManyRequestsException - Thrown when a request is throttled.

InternalErrorException - Thrown when the service encounters an error during processing the request.

ConcurrentModificationException - Thrown if there are parallel requests to modify a resource.

shutdown

void shutdown()

Shuts down this client object, releasing any resources that might be held open. This is an optional method, and callers are not expected to call it, but can if they want to explicitly release any open resources. Once a client has been shutdown, it should not be used to make any more requests.

getCachedResponseMetadata

ResponseMetadata getCachedResponseMetadata(AmazonWebServiceRequest request)

Returns additional metadata for a previously executed successful request, typically used for debugging issues where a service isn't acting as expected. This data isn't considered part of the result data returned by an operation, so it's available through this separate, diagnostic interface.

Response metadata is only cached for a limited period of time, so if you need to access this extra diagnostic information for an executed request, you should use this method to retrieve it as soon as possible after executing a request.

Parameters:

request - The originally executed request.

Returns:

The response metadata for the specified request, or null if none is available.