Interface SpannerOptions.CallContextConfigurator

Version 6.18.0

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public static interface SpannerOptions.CallContextConfigurator

CallContextConfigurator can be used to modify the ApiCallContext for one or more specific RPCs. This can be used to set specific timeout value for RPCs or use specific CallCredentials for an RPC. The CallContextConfigurator must be set as a value on the Context using the SpannerOptions#CALL_CONTEXT_CONFIGURATOR_KEY key.

This API is meant for advanced users. Most users should instead use the SpannerCallContextTimeoutConfigurator for setting timeouts per RPC.

Example usage:

 CallContextConfigurator configurator =
     new CallContextConfigurator() {
       public 

Methods

<ReqT,RespT>configure(ApiCallContext context, ReqT request, MethodDescriptor<ReqT,RespT> method)

public abstract ApiCallContext <ReqT,RespT>configure(ApiCallContext context, ReqT request, MethodDescriptor<ReqT,RespT> method)

Configure a ApiCallContext for a specific RPC call.

Parameters

Name	Description
context	ApiCallContext The default context. This can be used to inspect the current values.
request	ReqT The request that will be sent.
method	io.grpc.MethodDescriptor<ReqT,RespT> The method that is being called.

Returns

Type	Description
ApiCallContext	An ApiCallContext that will be merged with the default ApiCallContext. If null is returned, no changes to the default ApiCallContext will be made.