Moved executor from request factory up to core

riptide-backup/src/test/java/org/zalando/riptide/backup/BackupRequestPluginTest.java

@@ -8,11 +8,11 @@
 import org.junit.Rule;
 import org.junit.Test;
 import org.springframework.core.task.AsyncListenableTaskExecutor;
-import org.springframework.http.client.AsyncClientHttpRequestFactory;
+import org.springframework.http.client.ClientHttpRequestFactory;
 import org.springframework.scheduling.concurrent.ConcurrentTaskExecutor;
 import org.zalando.riptide.Http;
 import org.zalando.riptide.capture.Completion;
-import org.zalando.riptide.httpclient.RestAsyncClientHttpRequestFactory;
+import org.zalando.riptide.httpclient.ApacheClientHttpRequestFactory;
 
 import java.io.IOException;
 import java.util.concurrent.Executors;
@@ -37,9 +37,10 @@ public final class BackupRequestPluginTest {
 
     private final CloseableHttpClient client = HttpClientBuilder.create().build();
     private final AsyncListenableTaskExecutor executor = new ConcurrentTaskExecutor(Executors.newFixedThreadPool(2));
-    private final AsyncClientHttpRequestFactory factory = new RestAsyncClientHttpRequestFactory(client, executor);
+    private final ClientHttpRequestFactory factory = new ApacheClientHttpRequestFactory(client);
 
     private final Http unit = Http.builder()
+            .executor(executor)
             .requestFactory(factory)
             .baseUrl(driver.getBaseUrl())
             .plugin(new BackupRequestPlugin(newSingleThreadScheduledExecutor(), 1, SECONDS, executor))
@@ -125,6 +126,7 @@ public void shouldSendBackupRequestsForGetWithBody() throws Throwable {
     @Test
     public void shouldSendBackupRequestForCustomSafeDetectedRequest() throws Throwable {
         final Http unit = Http.builder()
+                .executor(executor)
                 .requestFactory(factory)
                 .baseUrl(driver.getBaseUrl())
                 .plugin(new BackupRequestPlugin(newSingleThreadScheduledExecutor(), 1, SECONDS, executor)

riptide-capture/src/test/java/org/zalando/riptide/capture/CaptureTest.java

@@ -11,13 +11,14 @@
 import org.springframework.http.converter.StringHttpMessageConverter;
 import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
 import org.springframework.test.web.client.MockRestServiceServer;
-import org.springframework.web.client.AsyncRestTemplate;
+import org.springframework.web.client.RestTemplate;
 import org.zalando.riptide.Http;
 
 import java.io.IOException;
 import java.util.NoSuchElementException;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.CompletionException;
+import java.util.concurrent.Executors;
 
 import static org.hamcrest.Matchers.instanceOf;
 import static org.hamcrest.Matchers.is;
@@ -42,10 +43,11 @@ public final class CaptureTest {
     private final MockRestServiceServer server;
 
     public CaptureTest() {
-        final AsyncRestTemplate template = new AsyncRestTemplate();
+        final RestTemplate template = new RestTemplate();
         this.server = MockRestServiceServer.createServer(template);
         this.unit = Http.builder()
-                .requestFactory(template.getAsyncRequestFactory())
+                .executor(Executors.newSingleThreadExecutor())
+                .requestFactory(template.getRequestFactory())
                 .converter(createJsonConverter())
                 .converter(new StringHttpMessageConverter())
                 .baseUrl("https://api.example.com")

riptide-core/src/main/java/org/zalando/riptide/DefaultHttp.java

@@ -4,31 +4,35 @@
 import com.google.common.collect.ImmutableMultimap;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpMethod;
-import org.springframework.http.client.AsyncClientHttpRequestFactory;
+import org.springframework.http.client.ClientHttpRequestFactory;
 import org.springframework.http.converter.HttpMessageConverter;
 
 import java.net.URI;
 import java.util.List;
+import java.util.concurrent.Executor;
 import java.util.function.Supplier;
 
-import static com.google.common.base.Preconditions.checkNotNull;
+import static java.util.Objects.requireNonNull;
 import static org.springframework.http.HttpHeaders.readOnlyHttpHeaders;
 
 final class DefaultHttp implements Http {
 
     private static final HttpHeaders EMPTY = readOnlyHttpHeaders(new HttpHeaders());
 
-    private final AsyncClientHttpRequestFactory requestFactory;
+    private final Executor executor;
+    private final ClientHttpRequestFactory requestFactory;
     private final MessageWorker worker;
     private final Supplier<URI> baseUrlProvider;
     private final RequestArguments arguments;
     private final Plugin plugin;
 
-    DefaultHttp(final AsyncClientHttpRequestFactory requestFactory, final List<HttpMessageConverter<?>> converters,
+    DefaultHttp(final Executor executor, final ClientHttpRequestFactory requestFactory,
+            final List<HttpMessageConverter<?>> converters,
             final Supplier<URI> baseUrlProvider, final UrlResolution resolution, final Plugin plugin) {
-        this.requestFactory = checkNotNull(requestFactory, "request factory");
+        this.executor = requireNonNull(executor, "executor");
+        this.requestFactory = requireNonNull(requestFactory, "request factory");
         this.worker = new MessageWorker(converters);
-        this.baseUrlProvider = checkNotNull(baseUrlProvider, "base url provider");
+        this.baseUrlProvider = requireNonNull(baseUrlProvider, "base url provider");
         this.arguments = RequestArguments.create().withUrlResolution(resolution);
         this.plugin = plugin;
     }
@@ -178,7 +182,7 @@ public Requester execute(final HttpMethod method) {
     }
 
     private Requester execute(final RequestArguments arguments) {
-        return new Requester(requestFactory, worker, arguments, plugin, ImmutableMultimap.of(), EMPTY);
+        return new Requester(executor, requestFactory, worker, arguments, plugin, ImmutableMultimap.of(), EMPTY);
     }
 
 }

riptide-core/src/main/java/org/zalando/riptide/DefaultHttpBuilder.java

@@ -1,24 +1,27 @@
 package org.zalando.riptide;
 
 import com.google.common.collect.ImmutableList;
-import org.springframework.http.client.AsyncClientHttpRequestFactory;
+import org.springframework.http.client.ClientHttpRequestFactory;
 import org.springframework.http.converter.HttpMessageConverter;
 import org.springframework.web.client.RestTemplate;
 import org.zalando.riptide.Http.ConfigurationStage;
+import org.zalando.riptide.Http.ExecutorStage;
 import org.zalando.riptide.Http.FinalStage;
 import org.zalando.riptide.Http.RequestFactoryStage;
 
+import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.concurrent.Executor;
 import java.util.function.Supplier;
 
 import static com.google.common.base.MoreObjects.firstNonNull;
 import static com.google.common.base.Preconditions.checkArgument;
 import static org.zalando.riptide.Plugin.compound;
 
-final class DefaultHttpBuilder implements RequestFactoryStage, ConfigurationStage, FinalStage {
+final class DefaultHttpBuilder implements ExecutorStage, RequestFactoryStage, ConfigurationStage, FinalStage {
 
     // package private so we can trick code coverage
     static class Converters {
@@ -41,7 +44,8 @@ private Plugins() {
 
     private static final UrlResolution DEFAULT_RESOLUTION = UrlResolution.RFC;
 
-    private AsyncClientHttpRequestFactory requestFactory;
+    private Executor executor;
+    private ClientHttpRequestFactory requestFactory;
     private final List<HttpMessageConverter<?>> converters = new ArrayList<>();
     private Supplier<URI> baseUrlProvider = () -> null;
     private UrlResolution resolution = DEFAULT_RESOLUTION;
@@ -52,7 +56,13 @@ private Plugins() {
     }
 
     @Override
-    public ConfigurationStage requestFactory(final AsyncClientHttpRequestFactory requestFactory) {
+    public RequestFactoryStage executor(final Executor executor) {
+        this.executor = executor;
+        return this;
+    }
+
+    @Override
+    public ConfigurationStage requestFactory(final ClientHttpRequestFactory requestFactory) {
         this.requestFactory = requestFactory;
         return this;
     }
@@ -63,7 +73,7 @@ public ConfigurationStage defaultConverters() {
     }
 
     @Override
-    public ConfigurationStage converters(final Iterable<HttpMessageConverter<?>> converters) {
+    public ConfigurationStage converters(@Nonnull final Iterable<HttpMessageConverter<?>> converters) {
         converters.forEach(this::converter);
         return this;
     }
@@ -108,7 +118,7 @@ public ConfigurationStage defaultPlugins() {
     }
 
     @Override
-    public ConfigurationStage plugins(final Iterable<Plugin> plugins) {
+    public ConfigurationStage plugins(@Nonnull final Iterable<Plugin> plugins) {
         plugins.forEach(this::plugin);
         return this;
     }
@@ -121,7 +131,7 @@ public ConfigurationStage plugin(final Plugin plugin) {
 
     @Override
     public Http build() {
-        return new DefaultHttp(requestFactory, converters(), baseUrlProvider, resolution, compound(plugins()));
+        return new DefaultHttp(executor, requestFactory, converters(), baseUrlProvider, resolution, compound(plugins()));
     }
 
     private List<HttpMessageConverter<?>> converters() {

riptide-core/src/main/java/org/zalando/riptide/Http.java

@@ -2,16 +2,13 @@
 
 import org.apiguardian.api.API;
 import org.springframework.http.HttpMethod;
-import org.springframework.http.client.AsyncClientHttpRequestFactory;
-import org.springframework.http.client.SimpleClientHttpRequestFactory;
+import org.springframework.http.client.ClientHttpRequestFactory;
 import org.springframework.http.converter.HttpMessageConverter;
-import org.springframework.scheduling.concurrent.ConcurrentTaskExecutor;
-import org.springframework.web.client.AsyncRestTemplate;
 import org.springframework.web.client.RestTemplate;
 
 import javax.annotation.Nullable;
 import java.net.URI;
-import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executor;
 import java.util.function.Supplier;
 
 import static org.apiguardian.api.API.Status.STABLE;
@@ -26,7 +23,6 @@
  *     .dispatch(..)}</pre>
  *
  * @see RestTemplate
- * @see AsyncRestTemplate
  */
 @API(status = STABLE)
 public interface Http {
@@ -67,17 +63,16 @@ public interface Http {
     Requester execute(HttpMethod method, URI uri);
     Requester execute(HttpMethod method);
 
-    static RequestFactoryStage builder() {
+    static ExecutorStage builder() {
         return new DefaultHttpBuilder();
     }
 
+    interface ExecutorStage {
+        RequestFactoryStage executor(Executor executor);
+    }
+
     interface RequestFactoryStage {
-        ConfigurationStage requestFactory(AsyncClientHttpRequestFactory requestFactory);
-        default ConfigurationStage simpleRequestFactory(final ExecutorService executor) {
-            final SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();
-            factory.setTaskExecutor(new ConcurrentTaskExecutor(executor));
-            return requestFactory(factory);
-        }
+        ConfigurationStage requestFactory(ClientHttpRequestFactory requestFactory);
     }
 
     interface ConfigurationStage extends FinalStage {

riptide-core/src/main/java/org/zalando/riptide/MessageWorker.java

@@ -6,13 +6,14 @@
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
-import org.springframework.http.client.AsyncClientHttpRequest;
+import org.springframework.http.client.ClientHttpRequest;
 import org.springframework.http.client.ClientHttpResponse;
 import org.springframework.http.converter.HttpMessageConverter;
 import org.springframework.web.client.HttpMessageConverterExtractor;
 import org.springframework.web.client.ResponseExtractor;
 import org.springframework.web.client.RestClientException;
 
+import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import java.io.IOException;
 import java.lang.reflect.ParameterizedType;
@@ -66,7 +67,8 @@ private <I> I cast(final Object result) {
     }
 
     @Override
-    public <T> void write(final AsyncClientHttpRequest request, final HttpEntity<T> entity) throws IOException {
+    public <T> void write(@Nonnull final ClientHttpRequest request, @Nonnull final HttpEntity<T> entity)
+            throws IOException {
         final HttpHeaders headers = entity.getHeaders();
         request.getHeaders().putAll(headers);
 

riptide-core/src/main/java/org/zalando/riptide/MessageWriter.java

@@ -2,7 +2,7 @@
 
 import org.apiguardian.api.API;
 import org.springframework.http.HttpEntity;
-import org.springframework.http.client.AsyncClientHttpRequest;
+import org.springframework.http.client.ClientHttpRequest;
 
 import java.io.IOException;
 
@@ -11,6 +11,6 @@
 @API(status = STABLE)
 interface MessageWriter {
 
-    <T> void write(AsyncClientHttpRequest request, HttpEntity<T> entity) throws IOException;
+    <T> void write(ClientHttpRequest request, HttpEntity<T> entity) throws IOException;
 
 }