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public final class InstantiatingGrpcChannelProvider implements TransportChannelProvider
InstantiatingGrpcChannelProvider is a TransportChannelProvider which constructs a gRPC ManagedChannel with a number of configured inputs every time getChannel(...) is called. These inputs include a port, a service address, and credentials.
The credentials can either be supplied directly (by providing a FixedCredentialsProvider to Builder.setCredentialsProvider()) or acquired implicitly from Application Default Credentials (by providing a GoogleCredentialsProvider to Builder.setCredentialsProvider()).
The client lib header and generator header values are used to form a value that goes into the http header of requests to the service.
Implements
TransportChannelProviderStatic Methods
newBuilder()
public static InstantiatingGrpcChannelProvider.Builder newBuilder()
Type | Description |
InstantiatingGrpcChannelProvider.Builder |
Methods
acceptsPoolSize()
public boolean acceptsPoolSize()
Reports whether this provider allows pool size customization.
Type | Description |
boolean |
getEndpoint()
public String getEndpoint()
The endpoint to be used for the channel.
Type | Description |
String |
getKeepAliveTime()
public Duration getKeepAliveTime()
The time without read activity before sending a keepalive ping.
Type | Description |
org.threeten.bp.Duration |
getKeepAliveTimeout()
public Duration getKeepAliveTimeout()
The time without read activity after sending a keepalive ping.
Type | Description |
org.threeten.bp.Duration |
getKeepAliveWithoutCalls()
public Boolean getKeepAliveWithoutCalls()
Whether keepalive will be performed when there are no outstanding RPCs.
Type | Description |
Boolean |
getMaxInboundMetadataSize()
public Integer getMaxInboundMetadataSize()
The maximum metadata size allowed to be received on the channel.
Type | Description |
Integer |
getTransportChannel()
public TransportChannel getTransportChannel()
Provides a Transport, which could either be a new instance for every call, or the same instance, depending on the implementation.
If #needsExecutor() is true, then #withExecutor(Executor) needs to be called first to provide an executor.
If #needsHeaders() is true, then #withHeaders(Map) needs to be called first to provide headers.
if #needsEndpoint() is true, then #withEndpoint(String) needs to be called first to provide an endpoint.
Type | Description |
TransportChannel |
Type | Description |
IOException |
getTransportName()
public String getTransportName()
The name of the transport.
This string can be used for identifying transports for switching logic.
Type | Description |
String |
needsCredentials()
public boolean needsCredentials()
True if credentials are needed before channel creation.
Type | Description |
boolean |
needsEndpoint()
public boolean needsEndpoint()
True if the TransportProvider has no endpoint set.
Type | Description |
boolean |
needsExecutor() (deprecated)
public boolean needsExecutor()
Deprecated. If executor is not set, this channel provider will create channels with default grpc executor.
True if the TransportProvider needs an executor.
Type | Description |
boolean |
needsHeaders()
public boolean needsHeaders()
True if the TransportProvider has no headers provided.
Type | Description |
boolean |
shouldAutoClose()
public boolean shouldAutoClose()
Indicates whether the TransportChannel should be closed by the containing client class.
Type | Description |
boolean |
toBuilder()
public InstantiatingGrpcChannelProvider.Builder toBuilder()
Type | Description |
InstantiatingGrpcChannelProvider.Builder |
withCredentials(Credentials credentials)
public TransportChannelProvider withCredentials(Credentials credentials)
Sets the credentials that will be applied before channel creation.
Name | Description |
credentials | com.google.auth.Credentials |
Type | Description |
TransportChannelProvider |
withEndpoint(String endpoint)
public TransportChannelProvider withEndpoint(String endpoint)
Specify the endpoint the channel should connect to.
The value of endpoint
must be of the form host:port
.
Name | Description |
endpoint | String The endpoint to connect to |
Type | Description |
TransportChannelProvider | A new InstantiatingGrpcChannelProvider with the specified endpoint configured |
withExecutor(Executor executor)
public TransportChannelProvider withExecutor(Executor executor)
Sets the executor to use when constructing a new TransportChannel.
Name | Description |
executor | Executor |
Type | Description |
TransportChannelProvider |
withExecutor(ScheduledExecutorService executor)
public TransportChannelProvider withExecutor(ScheduledExecutorService executor)
Name | Description |
executor | ScheduledExecutorService |
Type | Description |
TransportChannelProvider |
withHeaders(Map<String,String> headers)
public TransportChannelProvider withHeaders(Map<String,String> headers)
Sets the headers to use when constructing a new TransportChannel.
This method should only be called if #needsHeaders() returns true.
Name | Description |
headers | Map<String,String> |
Type | Description |
TransportChannelProvider |
withPoolSize(int size)
public TransportChannelProvider withPoolSize(int size)
Number of underlying transport channels to open. Calls will be load balanced across them.
Name | Description |
size | int |
Type | Description |
TransportChannelProvider |