Package io.grpc.inprocess

Class InProcessChannelBuilder

java.lang.Object

io.grpc.ManagedChannelBuilder<InProcessChannelBuilder>

io.grpc.ForwardingChannelBuilder2<InProcessChannelBuilder>

io.grpc.inprocess.InProcessChannelBuilder

@ExperimentalApi("https://github.com/grpc/grpc-java/issues/1783")
public final class InProcessChannelBuilder
extends ForwardingChannelBuilder2<InProcessChannelBuilder>

Builder for a channel that issues in-process requests. Clients identify the in-process server by its name.

The channel is intended to be fully-featured, high performance, and useful in testing.

For usage examples, see InProcessServerBuilder.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static final class	InProcessChannelBuilder.InProcessClientTransportFactory	Creates InProcess transports.

Nested classes/interfaces inherited from class io.grpc.ManagedChannelBuilder

ManagedChannelBuilder.InterceptorFactory

Field Summary

Fields

Modifier and Type	Field	Description
private long	assumedMessageSize
private final ManagedChannelImplBuilder	managedChannelImplBuilder
private int	maxInboundMetadataSize
private ScheduledExecutorService	scheduledExecutorService
private boolean	transportIncludeStatusCause

Constructor Summary

Constructors

Modifier	Constructor	Description
private	InProcessChannelBuilder(SocketAddress directAddress, String target)

Method Summary

Modifier and Type	Method	Description
InProcessChannelBuilder	assumedMessageSize(long assumedMessageSize)	Assumes RPC messages are the specified size.
(package private) ClientTransportFactory	buildTransportFactory()
protected ManagedChannelBuilder<?>	delegate()	Returns the delegated ManagedChannelBuilder.
static InProcessChannelBuilder	forAddress(String name, int port)	Always fails.
static InProcessChannelBuilder	forAddress(SocketAddress address)	Create a channel builder that will connect to the server referenced by the given address.
static InProcessChannelBuilder	forName(String name)	Create a channel builder that will connect to the server with the given name.
static InProcessChannelBuilder	forTarget(String target)	Create a channel builder that will connect to the server referenced by the given target URI.
InProcessChannelBuilder	keepAliveTime(long keepAliveTime, TimeUnit timeUnit)	Does nothing.
InProcessChannelBuilder	keepAliveTimeout(long keepAliveTimeout, TimeUnit timeUnit)	Does nothing.
InProcessChannelBuilder	keepAliveWithoutCalls(boolean enable)	Does nothing.
InProcessChannelBuilder	maxInboundMessageSize(int max)	Sets the maximum message size allowed to be received on the channel.
InProcessChannelBuilder	maxInboundMetadataSize(int bytes)	Sets the maximum size of metadata allowed to be received.
InProcessChannelBuilder	propagateCauseWithStatus(boolean enable)	Sets whether to include the cause with the status that is propagated forward from the InProcessTransport.
InProcessChannelBuilder	scheduledExecutorService(ScheduledExecutorService scheduledExecutorService)	Provides a custom scheduled executor service.
(package private) void	setStatsEnabled(boolean value)
InProcessChannelBuilder	usePlaintext()	Does nothing.
InProcessChannelBuilder	useTransportSecurity()	Does nothing.

Methods inherited from class io.grpc.ForwardingChannelBuilder2

addMetricSink, addTransportFilter, build, compressorRegistry, decompressorRegistry, defaultLoadBalancingPolicy, defaultServiceConfig, directExecutor, disableRetry, disableServiceConfigLookUp, enableRetry, executor, idleTimeout, intercept, intercept, interceptWithTarget, maxHedgedAttempts, maxRetryAttempts, maxTraceEvents, nameResolverFactory, offloadExecutor, overrideAuthority, perRpcBufferLimit, proxyDetector, retryBufferSize, setBinaryLog, toString, userAgent

Methods inherited from class java.lang.Object

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

Field Details

managedChannelImplBuilder

private final ManagedChannelImplBuilder managedChannelImplBuilder

scheduledExecutorService

private ScheduledExecutorService scheduledExecutorService

maxInboundMetadataSize

private int maxInboundMetadataSize

transportIncludeStatusCause

private boolean transportIncludeStatusCause

assumedMessageSize

private long assumedMessageSize

Constructor Details

InProcessChannelBuilder

private InProcessChannelBuilder(@Nullable
 SocketAddress directAddress,
 @Nullable
 String target)

Method Details

forName

public static InProcessChannelBuilder forName(String name)

Create a channel builder that will connect to the server with the given name.

Parameters:

name - the identity of the server to connect to

Returns:

a new builder

forTarget

public static InProcessChannelBuilder forTarget(String target)

Create a channel builder that will connect to the server referenced by the given target URI. Only intended for use with a custom name resolver.

Parameters:

target - the identity of the server to connect to

Returns:

a new builder

forAddress

public static InProcessChannelBuilder forAddress(SocketAddress address)

Create a channel builder that will connect to the server referenced by the given address.

Parameters:

address - the address of the server to connect to

Returns:

a new builder

forAddress

public static InProcessChannelBuilder forAddress(String name,
 int port)

Always fails. Call forName(java.lang.String) instead.

delegate

@Internal
protected ManagedChannelBuilder<?> delegate()

Description copied from class: ForwardingChannelBuilder2

Returns the delegated ManagedChannelBuilder.

Specified by:

delegate in class ForwardingChannelBuilder2<InProcessChannelBuilder>

maxInboundMessageSize

public InProcessChannelBuilder maxInboundMessageSize(int max)

Description copied from class: ManagedChannelBuilder

Sets the maximum message size allowed to be received on the channel. If not called, defaults to 4 MiB. The default provides protection to clients who haven't considered the possibility of receiving large messages while trying to be large enough to not be hit in normal usage.

This method is advisory, and implementations may decide to not enforce this. Currently, the only known transport to not enforce this is InProcessTransport.

Overrides:

maxInboundMessageSize in class ForwardingChannelBuilder2<InProcessChannelBuilder>

Parameters:

max - the maximum number of bytes a single message can be.

Returns:

this

useTransportSecurity

public InProcessChannelBuilder useTransportSecurity()

Does nothing.

Overrides:

useTransportSecurity in class ForwardingChannelBuilder2<InProcessChannelBuilder>

Returns:

this

usePlaintext

public InProcessChannelBuilder usePlaintext()

Does nothing.

Overrides:

usePlaintext in class ForwardingChannelBuilder2<InProcessChannelBuilder>

Returns:

this

keepAliveTime

public InProcessChannelBuilder keepAliveTime(long keepAliveTime,
 TimeUnit timeUnit)

Does nothing.

Overrides:

keepAliveTime in class ForwardingChannelBuilder2<InProcessChannelBuilder>

See Also:

• gRFC A8 Client-side Keepalive

keepAliveTimeout

public InProcessChannelBuilder keepAliveTimeout(long keepAliveTimeout,
 TimeUnit timeUnit)

Does nothing.

Overrides:

keepAliveTimeout in class ForwardingChannelBuilder2<InProcessChannelBuilder>

See Also:

• gRFC A8 Client-side Keepalive

keepAliveWithoutCalls

public InProcessChannelBuilder keepAliveWithoutCalls(boolean enable)

Does nothing.

Overrides:

keepAliveWithoutCalls in class ForwardingChannelBuilder2<InProcessChannelBuilder>

See Also:

• ManagedChannelBuilder.keepAliveTime(long, TimeUnit)
• gRFC A8 Client-side Keepalive

scheduledExecutorService

public InProcessChannelBuilder scheduledExecutorService(ScheduledExecutorService scheduledExecutorService)

Provides a custom scheduled executor service.

It's an optional parameter. If the user has not provided a scheduled executor service when the channel is built, the builder will use a static cached thread pool.

Returns:

this

Since:

1.11.0

maxInboundMetadataSize

public InProcessChannelBuilder maxInboundMetadataSize(int bytes)

Sets the maximum size of metadata allowed to be received. Integer.MAX_VALUE disables the enforcement. Defaults to no limit (Integer.MAX_VALUE).

There is potential for performance penalty when this setting is enabled, as the Metadata must actually be serialized. Since the current implementation of Metadata pre-serializes, it's currently negligible. But Metadata is free to change its implementation.

Overrides:

maxInboundMetadataSize in class ForwardingChannelBuilder2<InProcessChannelBuilder>

Parameters:

bytes - the maximum size of received metadata

Returns:

this

Throws:

IllegalArgumentException - if bytes is non-positive

Since:

1.17.0

propagateCauseWithStatus

public InProcessChannelBuilder propagateCauseWithStatus(boolean enable)

Sets whether to include the cause with the status that is propagated forward from the InProcessTransport. This was added to make debugging failing tests easier by showing the cause of the status.

By default, this is set to false. A default value of false maintains consistency with other transports which strip causal information from the status to avoid leaking information to untrusted clients, and to avoid sharing language-specific information with the client. For the in-process implementation, this is not a concern.

Parameters:

enable - whether to include cause in status

Returns:

this

assumedMessageSize

public InProcessChannelBuilder assumedMessageSize(long assumedMessageSize)

Assumes RPC messages are the specified size. This avoids serializing messages for metrics and retry memory tracking. This can dramatically improve performance when accurate message sizes are not needed and if nothing else needs the serialized message.

Parameters:

assumedMessageSize - length of InProcess transport's messageSize.

Returns:

this

Throws:

IllegalArgumentException - if assumedMessageSize is negative.

buildTransportFactory

ClientTransportFactory buildTransportFactory()

setStatsEnabled

void setStatsEnabled(boolean value)