sila_java.library.server_base.metadata

Class MetadataExtractingInterceptor

java.lang.Object

sila_java.library.server_base.metadata.MetadataExtractingInterceptor

All Implemented Interfaces:

ServerInterceptor

public class MetadataExtractingInterceptor
extends Object
implements ServerInterceptor

gRPC server interceptor which captures incoming SiLA Client Metadata message bytes and attaches it to the Context.current() as ServerMetadataContainer

Field Summary

Fields

Modifier and Type	Field and Description
static Context.Key<ServerMetadataContainer>	SILA_METADATA_KEY

Constructor Summary

Constructors

Constructor and Description
MetadataExtractingInterceptor()

Method Summary

Modifier and Type	Method and Description
<ReqT,RespT> ServerCall.Listener<ReqT>	interceptCall(ServerCall<ReqT,RespT> call, Metadata headers, ServerCallHandler<ReqT,RespT> next) Capture incoming SiLA Client Metadata message bytes in an ServerMetadataContainer and attach it to Context.current(), then continue handling the call

Methods inherited from class java.lang.Object

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

Field Detail

SILA_METADATA_KEY

public static final Context.Key<ServerMetadataContainer> SILA_METADATA_KEY

Constructor Detail

MetadataExtractingInterceptor

public MetadataExtractingInterceptor()

Method Detail

interceptCall

public <ReqT,RespT> ServerCall.Listener<ReqT> interceptCall(ServerCall<ReqT,RespT> call,
                                                            Metadata headers,
                                                            ServerCallHandler<ReqT,RespT> next)

Capture incoming SiLA Client Metadata message bytes in an ServerMetadataContainer and attach it to Context.current(), then continue handling the call

Specified by:

interceptCall in interface ServerInterceptor

Type Parameters:

ReqT - Request type

RespT - Response type

Parameters:

call - object to receive response messages

headers - which can contain extra call metadata from ClientCall.start(io.grpc.ClientCall.Listener<RespT>, io.grpc.Metadata), e.g. authentication credentials.

next - next processor in the interceptor chain

Returns:

The incoming call, with SiLA Client Metadata message bytes attached to Context.current()

Implementation Note:

Does not parse the SiLA Client Metadata messages