Work around limitations with buffering in the jetty component by usin…

…g http4 instead. This problem manifests itself when API-X proxies the retrieval of large (>2MiB) resources from Fedora. (fcrepo4-labs#77)

- Use http4 component instead of jetty in the 'execute-intercept' route
- Includes IT demonstrating the issue whe the jetty component is used

fcrepo-api-x-integration/pom.xml

@@ -287,6 +287,13 @@
       <scope>test</scope>
     </dependency>
 
+    <dependency>
+      <groupId>commons-io</groupId>
+      <artifactId>commons-io</artifactId>
+      <version>2.5</version>
+      <scope>test</scope>
+    </dependency>
+
     <!-- Fedora -->
     <dependency>
       <groupId>org.fcrepo</groupId>

fcrepo-api-x-integration/src/test/java/org/fcrepo/apix/integration/KarafIT.java

@@ -30,6 +30,7 @@
 
 import java.io.File;
 import java.io.FileInputStream;
+import java.io.InputStream;
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -204,10 +205,19 @@ public default Option deployFile(String path) {
      * @return the resulting WebResource
      */
     public default WebResource testResource(String path) {
+        return testResource(path, "text/turtle");
+    }
 
+    /**
+     * Get a test resource from test-classes
+     *
+     * @param path the resource path relative to {@link #testResources}
+     * @return the resulting WebResource
+     */
+    public default WebResource testResource(String path, String contentType) {
         final File file = new File(testResources, path);
         try {
-            return WebResource.of(new FileInputStream(file), "text/turtle", URI.create(FilenameUtils.getBaseName(
+            return WebResource.of(new FileInputStream(file), contentType, URI.create(FilenameUtils.getBaseName(
                     path)), null);
         } catch (final Exception e) {
             throw new RuntimeException(e);
@@ -225,6 +235,34 @@ public default URI postFromTestResource(final String filePath, final URI intoCon
         }
     }
 
+    public default URI postFromTestResource(final String filePath, final URI intoContainer, final String contentType)
+            throws Exception {
+        return postFromTestResource(filePath, intoContainer, contentType,
+                String.format("%s_%s", testMethodName(), getBaseName(filePath)));
+    }
+
+    public default URI postFromTestResource(final String filePath, final URI intoContainer,
+                                            final String contentType, final String slug) throws Exception {
+        try (final WebResource object = testResource(filePath, contentType);
+             final FcrepoResponse response = client.post(intoContainer)
+                     .body(object.representation(), object.contentType())
+                     .slug(slug)
+                     .perform()) {
+            return response.getLocation();
+        }
+    }
+
+    public default URI postFromStream(final InputStream in, final URI intoContainer, final String contentType,
+                                      final String slug) throws Exception {
+        try (final WebResource object = WebResource.of(in, contentType);
+             final FcrepoResponse response = client.post(intoContainer)
+                     .body(object.representation(), object.contentType())
+                     .slug(slug)
+                     .perform()) {
+            return response.getLocation();
+        }
+    }
+
     public static <T> T attempt(final int times, final Callable<T> it) {
 
         Exception caught = null;