com.gremlin.db.dynamo.client

Class GremlinDynamoRequestInterceptor

java.lang.Object

com.amazonaws.handlers.RequestHandler2

com.gremlin.db.dynamo.client.GremlinDynamoRequestInterceptor

All Implemented Interfaces:

com.amazonaws.handlers.IRequestHandler2

public class GremlinDynamoRequestInterceptor
extends com.amazonaws.handlers.RequestHandler2

This class integrates Gremlin with the DynamoDB client You may inject this interceptor at the point where the DynamoDB client is created. This allows Gremlin to include the Dynamo table name and operation in the generated TrafficCoordinates and for all calls to get instrumented without a call-site reference. It also transparently handles timeout calculations. It limits the amount of Gremlin latency to the Dynamo timeout

Constructor Summary

Constructors

Constructor and Description
GremlinDynamoRequestInterceptor(GremlinService gremlinService, int clientExecutionTimeout, int clientRequestTimeout) Construct on instance of this interceptor.

Method Summary

Modifier and Type	Method and Description
com.amazonaws.AmazonWebServiceRequest	beforeExecution(com.amazonaws.AmazonWebServiceRequest request)
void	beforeRequest(com.amazonaws.Request<?> request)

Methods inherited from class com.amazonaws.handlers.RequestHandler2

adapt, afterAttempt, afterError, afterResponse, beforeAttempt, beforeMarshalling, beforeUnmarshalling

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GremlinDynamoRequestInterceptor

public GremlinDynamoRequestInterceptor(GremlinService gremlinService,
                                       int clientExecutionTimeout,
                                       int clientRequestTimeout)

Construct on instance of this interceptor. Once constructed, you'll need to add it to the instance of the DynamoDB client you've already got.

Parameters:

gremlinService - instance of GremlinService that handles communication to Gremlin

clientExecutionTimeout - timeout you've configured for DynamoDB execution

clientRequestTimeout - timeout you've configured for DynamoDB request

Method Detail

beforeExecution

public com.amazonaws.AmazonWebServiceRequest beforeExecution(com.amazonaws.AmazonWebServiceRequest request)

Specified by:

beforeExecution in interface com.amazonaws.handlers.IRequestHandler2

Overrides:

beforeExecution in class com.amazonaws.handlers.RequestHandler2

beforeRequest

public void beforeRequest(com.amazonaws.Request<?> request)

Specified by:

beforeRequest in interface com.amazonaws.handlers.IRequestHandler2

Overrides:

beforeRequest in class com.amazonaws.handlers.RequestHandler2