| /* |
| * Copyright 2017, gRPC Authors All rights reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package io.grpc; |
| |
| import javax.annotation.concurrent.ThreadSafe; |
| |
| /** |
| * Listens to events on a stream to collect metrics. |
| */ |
| @ExperimentalApi("https://github.com/grpc/grpc-java/issues/2861") |
| @ThreadSafe |
| public abstract class StreamTracer { |
| /** |
| * Stream is closed. This will be called exactly once. |
| */ |
| public void streamClosed(Status status) { |
| } |
| |
| /** |
| * An outbound message has been passed to the stream. This is called as soon as the stream knows |
| * about the message, but doesn't have further guarantee such as whether the message is serialized |
| * or not. |
| */ |
| public void outboundMessage() { |
| } |
| |
| /** |
| * An inbound message has been received by the stream. This is called as soon as the stream knows |
| * about the message, but doesn't have further guarantee such as whether the message is |
| * deserialized or not. |
| */ |
| public void inboundMessage() { |
| } |
| |
| /** |
| * The wire size of some outbound data is revealed. This can only used to record the accumulative |
| * outbound wire size. There is no guarantee wrt timing or granularity of this method. |
| */ |
| public void outboundWireSize(long bytes) { |
| } |
| |
| /** |
| * The uncompressed size of some outbound data is revealed. This can only used to record the |
| * accumulative outbound uncompressed size. There is no guarantee wrt timing or granularity of |
| * this method. |
| */ |
| public void outboundUncompressedSize(long bytes) { |
| } |
| |
| /** |
| * The wire size of some inbound data is revealed. This can only be used to record the |
| * accumulative received wire size. There is no guarantee wrt timing or granularity of this |
| * method. |
| */ |
| public void inboundWireSize(long bytes) { |
| } |
| |
| /** |
| * The uncompressed size of some inbound data is revealed. This can only used to record the |
| * accumulative received uncompressed size. There is no guarantee wrt timing or granularity of |
| * this method. |
| */ |
| public void inboundUncompressedSize(long bytes) { |
| } |
| } |