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/*
* Copyright 2013 Netflix, Inc.
*
* 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;
import com.google.common.base.Joiner;
import com.google.mockwebserver.MockResponse;
import com.google.mockwebserver.MockWebServer;
import com.google.mockwebserver.SocketPolicy;
import dagger.Lazy;
import dagger.Module;
import dagger.Provides;
import feign.codec.Decoder;
import feign.codec.Encoder;
import feign.codec.ErrorDecoder;
import feign.codec.StringDecoder;
import org.testng.annotations.Test;
import javax.inject.Named;
import javax.inject.Singleton;
import javax.net.ssl.SSLSocketFactory;
import java.io.IOException;
import java.io.Reader;
import java.lang.reflect.Type;
import java.net.URI;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.atomic.AtomicBoolean;
import static dagger.Provides.Type.SET;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertTrue;
import static org.testng.Assert.fail;
@Test
// unbound wildcards are not currently injectable in dagger.
@SuppressWarnings("rawtypes")
public class FeignTest {
@Test public void closeShutsdownExecutorService() throws IOException, InterruptedException {
final ExecutorService service = Executors.newCachedThreadPool();
new Feign(new Lazy<Executor>() {
@Override public Executor get() {
return service;
}
}) {
@Override public <T> T newInstance(Target<T> target) {
return null;
}
}.close();
assertTrue(service.isShutdown());
}
interface TestInterface {
@RequestLine("POST /") String post();
@RequestLine("POST /")
@Body("%7B\"customer_name\": \"{customer_name}\", \"user_name\": \"{user_name}\", \"password\": \"{password}\"%7D")
void login(
@Named("customer_name") String customer, @Named("user_name") String user, @Named("password") String password);
@RequestLine("POST /") void body(List<String> contents);
@RequestLine("POST /") void form(
@Named("customer_name") String customer, @Named("user_name") String user, @Named("password") String password);
@RequestLine("GET /{1}/{2}") Response uriParam(@Named("1") String one, URI endpoint, @Named("2") String two);
@RequestLine("POST /") void incrementVoid(IncrementalCallback<Void> incrementalCallback);
@RequestLine("POST /") void incrementString(IncrementalCallback<String> incrementalCallback);
@RequestLine("POST /") void incrementResponse(IncrementalCallback<Response> incrementalCallback);
@dagger.Module(overrides = true, library = true)
static class Module {
@Provides(type = SET) Encoder defaultEncoder() {
return new Encoder.Text<Object>() {
@Override public String encode(Object object) {
return object.toString();
}
};
}
@Provides(type = SET) Encoder formEncoder() {
return new Encoder.Text<Map<String, ?>>() {
@Override public String encode(Map<String, ?> object) {
return Joiner.on(',').withKeyValueSeparator("=").join(object);
}
};
}
// just run synchronously
@Provides @Singleton @Named("http") Executor httpExecutor() {
return new Executor() {
@Override public void execute(Runnable command) {
command.run();
}
};
}
}
}
@Test
public void incrementVoid() throws IOException, InterruptedException {
final MockWebServer server = new MockWebServer();
server.enqueue(new MockResponse().setResponseCode(200).setBody("foo"));
server.play();
try {
TestInterface api = Feign.create(TestInterface.class, "http://localhost:" + server.getPort(), new TestInterface.Module());
final AtomicBoolean success = new AtomicBoolean();
IncrementalCallback<Void> incrementalCallback = new IncrementalCallback<Void>() {
@Override public void onNext(Void element) {
fail("on next isn't valid for void");
}
@Override public void onSuccess() {
success.set(true);
}
@Override public void onFailure(Throwable cause) {
fail(cause.getMessage());
}
};
api.incrementVoid(incrementalCallback);
assertTrue(success.get());
assertEquals(server.getRequestCount(), 1);
} finally {
server.shutdown();
}
}
@Test
public void incrementResponse() throws IOException, InterruptedException {
final MockWebServer server = new MockWebServer();
server.enqueue(new MockResponse().setResponseCode(200).setBody("foo"));
server.play();
try {
TestInterface api = Feign.create(TestInterface.class, "http://localhost:" + server.getPort(), new TestInterface.Module());
final AtomicBoolean success = new AtomicBoolean();
IncrementalCallback<Response> incrementalCallback = new IncrementalCallback<Response>() {
@Override public void onNext(Response element) {
assertEquals(element.status(), 200);
}
@Override public void onSuccess() {
success.set(true);
}
@Override public void onFailure(Throwable cause) {
fail(cause.getMessage());
}
};
api.incrementResponse(incrementalCallback);
assertTrue(success.get());
assertEquals(server.getRequestCount(), 1);
} finally {
server.shutdown();
}
}
@Test
public void incrementString() throws IOException, InterruptedException {
final MockWebServer server = new MockWebServer();
server.enqueue(new MockResponse().setResponseCode(200).setBody("foo"));
server.play();
try {
TestInterface api = Feign.create(TestInterface.class, "http://localhost:" + server.getPort(), new TestInterface.Module());
final AtomicBoolean success = new AtomicBoolean();
IncrementalCallback<String> incrementalCallback = new IncrementalCallback<String>() {
@Override public void onNext(String element) {
assertEquals(element, "foo");
}
@Override public void onSuccess() {
success.set(true);
}
@Override public void onFailure(Throwable cause) {
fail(cause.getMessage());
}
};
api.incrementString(incrementalCallback);
assertTrue(success.get());
assertEquals(server.getRequestCount(), 1);
} finally {
server.shutdown();
}
}
@Test
public void postTemplateParamsResolve() throws IOException, InterruptedException {
final MockWebServer server = new MockWebServer();
server.enqueue(new MockResponse().setResponseCode(200).setBody("foo"));
server.play();
try {
TestInterface api = Feign.create(TestInterface.class, "http://localhost:" + server.getPort(), new TestInterface.Module());
api.login("netflix", "denominator", "password");
assertEquals(new String(server.takeRequest().getBody()),
"{\"customer_name\": \"netflix\", \"user_name\": \"denominator\", \"password\": \"password\"}");
} finally {
server.shutdown();
}
}
@Test
public void postFormParams() throws IOException, InterruptedException {
final MockWebServer server = new MockWebServer();
server.enqueue(new MockResponse().setResponseCode(200).setBody("foo"));
server.play();
try {
TestInterface api = Feign.create(TestInterface.class, "http://localhost:" + server.getPort(), new TestInterface.Module());
api.form("netflix", "denominator", "password");
assertEquals(new String(server.takeRequest().getBody()),
"customer_name=netflix,user_name=denominator,password=password");
} finally {
server.shutdown();
}
}
@Test
public void postBodyParam() throws IOException, InterruptedException {
final MockWebServer server = new MockWebServer();
server.enqueue(new MockResponse().setResponseCode(200).setBody("foo"));
server.play();
try {
TestInterface api = Feign.create(TestInterface.class, "http://localhost:" + server.getPort(), new TestInterface.Module());
api.body(Arrays.asList("netflix", "denominator", "password"));
assertEquals(new String(server.takeRequest().getBody()), "[netflix, denominator, password]");
} finally {
server.shutdown();
}
}
@Test public void toKeyMethodFormatsAsExpected() throws Exception {
assertEquals(Feign.configKey(TestInterface.class.getDeclaredMethod("post")), "TestInterface#post()");
assertEquals(Feign.configKey(TestInterface.class.getDeclaredMethod("uriParam", String.class, URI.class,
String.class)), "TestInterface#uriParam(String,URI,String)");
}
@dagger.Module(overrides = true, library = true, includes = TestInterface.Module.class)
static class IllegalArgumentExceptionOn404 {
@Provides @Singleton ErrorDecoder errorDecoder() {
return new ErrorDecoder.Default() {
@Override
public Exception decode(String methodKey, Response response) {
if (response.status() == 404)
return new IllegalArgumentException("zone not found");
return super.decode(methodKey, response);
}
};
}
}
@Test(expectedExceptions = IllegalArgumentException.class, expectedExceptionsMessageRegExp = "zone not found")
public void canOverrideErrorDecoder() throws IOException, InterruptedException {
final MockWebServer server = new MockWebServer();
server.enqueue(new MockResponse().setResponseCode(404).setBody("foo"));
server.play();
try {
TestInterface api = Feign.create(TestInterface.class, "http://localhost:" + server.getPort(),
new IllegalArgumentExceptionOn404());
api.post();
} finally {
server.shutdown();
}
}
@Test public void retriesLostConnectionBeforeRead() throws IOException, InterruptedException {
MockWebServer server = new MockWebServer();
server.enqueue(new MockResponse().setSocketPolicy(SocketPolicy.DISCONNECT_AT_START));
server.enqueue(new MockResponse().setResponseCode(200).setBody("success!".getBytes()));
server.play();
try {
TestInterface api = Feign.create(TestInterface.class, "http://localhost:" + server.getPort(),
new TestInterface.Module());
api.post();
assertEquals(server.getRequestCount(), 2);
} finally {
server.shutdown();
}
}
@dagger.Module(overrides = true, library = true, includes = TestInterface.Module.class)
static class DecodeFail {
@Provides(type = SET) Decoder decoder() {
return new Decoder.TextStream<String>() {
@Override
public String decode(Reader reader, Type type) throws IOException {
return "fail";
}
};
}
}
public void overrideTypeSpecificDecoder() throws IOException, InterruptedException {
MockWebServer server = new MockWebServer();
server.enqueue(new MockResponse().setResponseCode(200).setBody("success!".getBytes()));
server.play();
try {
TestInterface api = Feign.create(TestInterface.class, "http://localhost:" + server.getPort(),
new DecodeFail());
assertEquals(api.post(), "fail");
} finally {
server.shutdown();
assertEquals(server.getRequestCount(), 1);
}
}
@dagger.Module(overrides = true, library = true, includes = TestInterface.Module.class)
static class RetryableExceptionOnRetry {
@Provides(type = SET) Decoder decoder() {
return new StringDecoder() {
@Override
public String decode(Reader reader, Type type) throws RetryableException, IOException {
String string = super.decode(reader, type);
if ("retry!".equals(string))
throw new RetryableException(string, null);
return string;
}
};
}
}
/**
* when you must parse a 2xx status to determine if the operation succeeded or not.
*/
public void retryableExceptionInDecoder() throws IOException, InterruptedException {
MockWebServer server = new MockWebServer();
server.enqueue(new MockResponse().setResponseCode(200).setBody("retry!".getBytes()));
server.enqueue(new MockResponse().setResponseCode(200).setBody("success!".getBytes()));
server.play();
try {
TestInterface api = Feign.create(TestInterface.class, "http://localhost:" + server.getPort(),
new RetryableExceptionOnRetry());
assertEquals(api.post(), "success!");
} finally {
server.shutdown();
assertEquals(server.getRequestCount(), 2);
}
}
@dagger.Module(overrides = true, library = true, includes = TestInterface.Module.class)
static class IOEOnDecode {
@Provides(type = SET) Decoder decoder() {
return new Decoder.TextStream<String>() {
@Override
public String decode(Reader reader, Type type) throws IOException {
throw new IOException("error reading response");
}
};
}
}
@Test(expectedExceptions = FeignException.class, expectedExceptionsMessageRegExp = "error reading response POST http://.*")
public void doesntRetryAfterResponseIsSent() throws IOException, InterruptedException {
MockWebServer server = new MockWebServer();
server.enqueue(new MockResponse().setResponseCode(200).setBody("success!".getBytes()));
server.play();
try {
TestInterface api = Feign.create(TestInterface.class, "http://localhost:" + server.getPort(),
new IOEOnDecode());
api.post();
} finally {
server.shutdown();
assertEquals(server.getRequestCount(), 1);
}
}
@Module(injects = Client.Default.class, overrides = true)
static class TrustSSLSockets {
@Provides SSLSocketFactory trustingSSLSocketFactory() {
return TrustingSSLSocketFactory.get();
}
}
@Test public void canOverrideSSLSocketFactory() throws IOException, InterruptedException {
MockWebServer server = new MockWebServer();
server.useHttps(TrustingSSLSocketFactory.get(), false);
server.enqueue(new MockResponse().setResponseCode(200).setBody("success!".getBytes()));
server.play();
try {
TestInterface api = Feign.create(TestInterface.class, "https://localhost:" + server.getPort(),
new TestInterface.Module(), new TrustSSLSockets());
api.post();
} finally {
server.shutdown();
}
}
@Test public void retriesFailedHandshake() throws IOException, InterruptedException {
MockWebServer server = new MockWebServer();
server.useHttps(TrustingSSLSocketFactory.get(), false);
server.enqueue(new MockResponse().setSocketPolicy(SocketPolicy.FAIL_HANDSHAKE));
server.enqueue(new MockResponse().setResponseCode(200).setBody("success!".getBytes()));
server.play();
36BE
try {
TestInterface api = Feign.create(TestInterface.class, "https://localhost:" + server.getPort(),
new TestInterface.Module(), new TrustSSLSockets());
api.post();
assertEquals(server.getRequestCount(), 2);
} finally {
server.shutdown();
}
}
}