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Fix grpc instrumentation of callbacks #4097

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merged 4 commits into from
Sep 13, 2021
Merged

Fix grpc instrumentation of callbacks #4097

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de32155
Fix grpc instrumentation of callbacks
trask Sep 11, 2021
89451dd
Merge remote-tracking branch 'upstream/main' into grpc-callbacks
trask Sep 13, 2021
7560ad1
Add ListenableFuture test
trask Sep 13, 2021
383ca4a
Futures.transform
trask Sep 13, 2021
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113 changes: 112 additions & 1 deletion ...esting/src/main/groovy/io/opentelemetry/instrumentation/grpc/v1_6/AbstractGrpcTest.groovy
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@

package io.opentelemetry.instrumentation.grpc.v1_6

import com.google.common.util.concurrent.MoreExecutors
import example.GreeterGrpc
import example.Helloworld
import io.grpc.BindableService
Expand Down Expand Up @@ -143,7 +144,117 @@ abstract class AbstractGrpcTest extends InstrumentationSpecification {
paramName << ["some name", "some other name"]
}

def "test callback"() {
def "test ListenableFuture callback"() {
setup:
BindableService greeter = new GreeterGrpc.GreeterImplBase() {
@Override
void sayHello(
final Helloworld.Request req, final StreamObserver<Helloworld.Response> responseObserver) {
final Helloworld.Response reply = Helloworld.Response.newBuilder().setMessage("Hello $req.name").build()
responseObserver.onNext(reply)
responseObserver.onCompleted()
}
}
def port = PortUtils.findOpenPort()
Server server = configureServer(ServerBuilder.forPort(port).addService(greeter)).build().start()
ManagedChannelBuilder channelBuilder = configureClient(ManagedChannelBuilder.forAddress("localhost", port))

// Depending on the version of gRPC usePlainText may or may not take an argument.
try {
channelBuilder.usePlaintext()
} catch (MissingMethodException e) {
channelBuilder.usePlaintext(true)
}
ManagedChannel channel = channelBuilder.build()
GreeterGrpc.GreeterFutureStub client = GreeterGrpc.newFutureStub(channel)

when:
AtomicReference<Helloworld.Response> response = new AtomicReference<>()
AtomicReference<Throwable> error = new AtomicReference<>()
CountDownLatch latch = new CountDownLatch(1)
runWithSpan("parent") {
def future = client.sayHello(Helloworld.Request.newBuilder().setName("test").build())
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It's probably worth using the idiomatic API

def future = Futures.transform(
  client.sayHelo(...)
  response -> {
    runWithSpan("child");
    return response;
  },
  MoreExecutors.directExecutor());

try {
  response.set(future.get());
 } catch (Throwable t) {
  error.set(t);
}

future.addListener({
try {
response.set(future.get())
} catch (Exception e) {
error.set(e);
}
runWithSpan("child") {}
latch.countDown()
}, MoreExecutors.directExecutor())
}

latch.await(10, TimeUnit.SECONDS)

then:
error.get() == null
response.get().message == "Hello test"

assertTraces(1) {
trace(0, 4) {
span(0) {
name "parent"
kind SpanKind.INTERNAL
hasNoParent()
}
span(1) {
name "example.Greeter/SayHello"
kind CLIENT
childOf span(0)
event(0) {
eventName "message"
attributes {
"message.type" "SENT"
"message.id" 1
}
}
attributes {
"${SemanticAttributes.RPC_SYSTEM.key}" "grpc"
"${SemanticAttributes.RPC_SERVICE.key}" "example.Greeter"
"${SemanticAttributes.RPC_METHOD.key}" "SayHello"
"${SemanticAttributes.NET_TRANSPORT}" SemanticAttributes.NetTransportValues.IP_TCP
"${SemanticAttributes.RPC_GRPC_STATUS_CODE}" Status.Code.OK.value()
}
}
span(2) {
name "example.Greeter/SayHello"
kind SERVER
childOf span(1)
event(0) {
eventName "message"
attributes {
"message.type" "RECEIVED"
"message.id" 1
}
}
attributes {
"${SemanticAttributes.RPC_SYSTEM.key}" "grpc"
"${SemanticAttributes.RPC_SERVICE.key}" "example.Greeter"
"${SemanticAttributes.RPC_METHOD.key}" "SayHello"
"${SemanticAttributes.NET_PEER_IP.key}" "127.0.0.1"
// "localhost" on linux, "127.0.0.1" on windows
"${SemanticAttributes.NET_PEER_NAME.key}" { it == "localhost" || it == "127.0.0.1" }
"${SemanticAttributes.NET_PEER_PORT.key}" Long
"${SemanticAttributes.NET_TRANSPORT.key}" SemanticAttributes.NetTransportValues.IP_TCP
"${SemanticAttributes.RPC_GRPC_STATUS_CODE.key}" Status.Code.OK.value()
}
}
span(3) {
name "child"
kind SpanKind.INTERNAL
childOf span(0)
}
}
}

cleanup:
channel?.shutdownNow()?.awaitTermination(10, TimeUnit.SECONDS)
server?.shutdownNow()?.awaitTermination()
}


def "test onCompleted callback"() {
setup:
BindableService greeter = new GreeterGrpc.GreeterImplBase() {
@Override
Expand Down