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/**
* Copyright 2012-2020 The Feign 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 feign.benchmark;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Warmup;
import java.io.IOException;
import java.util.Collection;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import feign.Client;
import feign.Contract;
import feign.Feign;
import feign.MethodMetadata;
import feign.Request;
import feign.Response;
import feign.Target.HardCodedTarget;
@Measurement(iterations = 5, time = 1)
@Warmup(iterations = 10, time = 1)
@Fork(3)
@BenchmarkMode(Mode.Throughput)
@OutputTimeUnit(TimeUnit.SECONDS)
@State(Scope.Thread)
public class WhatShouldWeCacheBenchmarks {
private Contract feignContract;
private Contract cachedContact;
private Client fakeClient;
private Feign cachedFakeFeign;
private FeignTestInterface cachedFakeApi;
@Setup
public void setup() {
feignContract = new Contract.Default();
cachedContact = new Contract() {
private final List<MethodMetadata> cached =
new Default().parseAndValidateMetadata(FeignTestInterface.class);
public List<MethodMetadata> parseAndValidateMetadata(Class<?> declaring) {
return cached;
}
};
fakeClient = new Client() {
public Response execute(Request request, Request.Options options) throws IOException {
Map<String, Collection<String>> headers = new LinkedHashMap<String, Collection<String>>();
return Response.builder()
.body((byte[]) null)
.status(200)
.headers(headers)
.reason("ok")
.request(request)
.build();
}
};
cachedFakeFeign = Feign.builder().client(fakeClient).build();
cachedFakeApi = cachedFakeFeign.newInstance(
new HardCodedTarget<FeignTestInterface>(FeignTestInterface.class, "http://localhost"));
}
/**
* How fast is parsing an api interface?
*/
@Benchmark
public List<MethodMetadata> parseFeignContract() {
return feignContract.parseAndValidateMetadata(FeignTestInterface.class);
}
/**
* How fast is creating a feign instance for each http request, without considering network?
*/
@Benchmark
public Response buildAndQuery_fake() {
return Feign.builder().client(fakeClient)
.target(FeignTestInterface.class, "http://localhost").query();
}
/**
* How fast is creating a feign instance for each http request, without considering network, and
* without re-parsing the annotated http api?
*/
@Benchmark
public Response buildAndQuery_fake_cachedContract() {
return Feign.builder().contract(cachedContact).client(fakeClient)
.target(FeignTestInterface.class, "http://localhost").query();
}
/**
* How fast re-parsing the annotated http api for each http request, without considering network?
*/
@Benchmark
public Response buildAndQuery_fake_cachedFeign() {
return cachedFakeFeign.newInstance(
new HardCodedTarget<FeignTestInterface>(FeignTestInterface.class, "http://localhost"))
.query();
}
/**
* How fast is our advice to use a cached api for each http request, without considering network?
*/
@Benchmark
public Response buildAndQuery_fake_cachedApi() {
return cachedFakeApi.query();
}
}