#19285

Committed 13 Jun 2024 11:09PM UTC coverage: 88.314% (+0.01%) from 88.3%

Build # #19285

Build Type

push

github

Committed by

web-flow

Commit Message

examples: Add GCP CSM Observability example (v1.65.x backport)  (#11286)

Add GCP CSM observability example client and example server. This is intended to be built as docker images and deployed as part of CSM observability.

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32050 of 36291 relevant lines covered (88.31%)

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91.43

/../netty/src/main/java/io/grpc/netty/ClientTransportLifecycleManager.java

/*
 * Copyright 2016 The gRPC Authors
 *
 * 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.netty;

import com.google.errorprone.annotations.CanIgnoreReturnValue;
import io.grpc.Attributes;
import io.grpc.Status;
import io.grpc.internal.ManagedClientTransport;

/** Maintainer of transport lifecycle status. */
final class ClientTransportLifecycleManager {
  private final ManagedClientTransport.Listener listener;
  private boolean transportReady;
  private boolean transportShutdown;
  private boolean transportInUse;
  /** null iff !transportShutdown. */
  private Status shutdownStatus;
  /** null iff !transportShutdown. */
  private Throwable shutdownThrowable;
  private boolean transportTerminated;

  public ClientTransportLifecycleManager(ManagedClientTransport.Listener listener) {
    this.listener = listener;
  }

  public Attributes filterAttributes(Attributes attributes) {
    if (transportReady || transportShutdown) {
      return attributes;
    }
    return listener.filterTransport(attributes);
  }

  public void notifyReady() {
    if (transportReady || transportShutdown) {
      return;
    }
    transportReady = true;
    listener.transportReady();
  }

  /**
   * Marks transport as shutdown, but does not set the error status. This must eventually be
   * followed by a call to notifyShutdown.
   */
  public void notifyGracefulShutdown(Status s) {
    if (transportShutdown) {
      return;
    }
    transportShutdown = true;
    listener.transportShutdown(s);
  }

  /** Returns {@code true} if was the first shutdown. */
  @CanIgnoreReturnValue
  public boolean notifyShutdown(Status s) {
    notifyGracefulShutdown(s);
    if (shutdownStatus != null) {
      return false;
    }
    shutdownStatus = s;
    shutdownThrowable = s.asException();
    return true;
  }

  public void notifyInUse(boolean inUse) {
    if (inUse == transportInUse) {
      return;
    }
    transportInUse = inUse;
    listener.transportInUse(inUse);
  }

  public void notifyTerminated(Status s) {
    if (transportTerminated) {
      return;
    }
    transportTerminated = true;
    notifyShutdown(s);
    listener.transportTerminated();
  }

  public Status getShutdownStatus() {
    return shutdownStatus;
  }

  public Throwable getShutdownThrowable() {
    return shutdownThrowable;
  }
}

1	/*
2	* Copyright 2016 The gRPC Authors
3	*
4	* Licensed under the Apache License, Version 2.0 (the "License");
5	* you may not use this file except in compliance with the License.
6	* You may obtain a copy of the License at
7	*
8	* http://www.apache.org/licenses/LICENSE-2.0
9	*
10	* Unless required by applicable law or agreed to in writing, software
11	* distributed under the License is distributed on an "AS IS" BASIS,
12	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13	* See the License for the specific language governing permissions and
14	* limitations under the License.
15	*/
16
17	package io.grpc.netty;
18
19	import com.google.errorprone.annotations.CanIgnoreReturnValue;
20	import io.grpc.Attributes;
21	import io.grpc.Status;
22	import io.grpc.internal.ManagedClientTransport;
23
24	/** Maintainer of transport lifecycle status. */
25	final class ClientTransportLifecycleManager {
26	private final ManagedClientTransport.Listener listener;
27	private boolean transportReady;
28	private boolean transportShutdown;
29	private boolean transportInUse;
30	/** null iff !transportShutdown. */
31	private Status shutdownStatus;
32	/** null iff !transportShutdown. */
33	private Throwable shutdownThrowable;
34	private boolean transportTerminated;
35
36	public ClientTransportLifecycleManager(ManagedClientTransport.Listener listener) {	1✔
37	this.listener = listener;	1✔
38	}	1✔
39
40	public Attributes filterAttributes(Attributes attributes) {
41	if (transportReady \|\| transportShutdown) {	1✔
42	return attributes;	×
43	}
44	return listener.filterTransport(attributes);	1✔
45	}
46
47	public void notifyReady() {
48	if (transportReady \|\| transportShutdown) {	1✔
49	return;	×
50	}
51	transportReady = true;	1✔
52	listener.transportReady();	1✔
53	}	1✔
54
55	/**
56	* Marks transport as shutdown, but does not set the error status. This must eventually be
57	* followed by a call to notifyShutdown.
58	*/
59	public void notifyGracefulShutdown(Status s) {
60	if (transportShutdown) {	1✔
61	return;	1✔
62	}
63	transportShutdown = true;	1✔
64	listener.transportShutdown(s);	1✔
65	}	1✔
66
67	/** Returns {@code true} if was the first shutdown. */
68	@CanIgnoreReturnValue
69	public boolean notifyShutdown(Status s) {
70	notifyGracefulShutdown(s);	1✔
71	if (shutdownStatus != null) {	1✔
72	return false;	1✔
73	}
74	shutdownStatus = s;	1✔
75	shutdownThrowable = s.asException();	1✔
76	return true;	1✔
77	}
78
79	public void notifyInUse(boolean inUse) {
80	if (inUse == transportInUse) {	1✔
81	return;	×
82	}
83	transportInUse = inUse;	1✔
84	listener.transportInUse(inUse);	1✔
85	}	1✔
86
87	public void notifyTerminated(Status s) {
88	if (transportTerminated) {	1✔
89	return;	1✔
90	}
91	transportTerminated = true;	1✔
92	notifyShutdown(s);	1✔
93	listener.transportTerminated();	1✔
94	}	1✔
95
96	public Status getShutdownStatus() {
97	return shutdownStatus;	1✔
98	}
99
100	public Throwable getShutdownThrowable() {
101	return shutdownThrowable;	1✔
102	}
103	}

grpc / grpc-java / #19285

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