/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.jclouds.openstack.swift.v1.features;
import static com.google.common.base.Charsets.US_ASCII;
import static com.google.common.net.HttpHeaders.RANGE;
import static org.jclouds.Constants.PROPERTY_MAX_RETRIES;
import static org.jclouds.Constants.PROPERTY_RETRY_DELAY_START;
import static org.jclouds.Constants.PROPERTY_SO_TIMEOUT;
import static org.jclouds.http.options.GetOptions.Builder.tail;
import static org.jclouds.io.Payloads.newByteSourcePayload;
import static org.jclouds.openstack.swift.v1.features.ContainerApiMockTest.containerResponse;
import static org.jclouds.openstack.swift.v1.options.ListContainerOptions.Builder.marker;
import static org.jclouds.openstack.swift.v1.options.PutOptions.Builder.metadata;
import static org.jclouds.openstack.swift.v1.reference.SwiftHeaders.CONTAINER_ACL_ANYBODY_READ;
import static org.jclouds.openstack.swift.v1.reference.SwiftHeaders.CONTAINER_READ;
import static org.jclouds.openstack.swift.v1.reference.SwiftHeaders.OBJECT_METADATA_PREFIX;
import static org.jclouds.openstack.swift.v1.reference.SwiftHeaders.OBJECT_REMOVE_METADATA_PREFIX;
import static org.jclouds.util.Strings2.toStringAndClose;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertTrue;
import static org.testng.Assert.fail;
import java.io.IOException;
import java.net.URI;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
import org.jclouds.date.internal.SimpleDateFormatDateService;
import org.jclouds.http.HttpResponseException;
import org.jclouds.io.Payload;
import org.jclouds.io.payloads.ByteSourcePayload;
import org.jclouds.openstack.swift.v1.CopyObjectException;
import org.jclouds.openstack.swift.v1.SwiftApi;
import org.jclouds.openstack.swift.v1.domain.ObjectList;
import org.jclouds.openstack.swift.v1.domain.SwiftObject;
import org.jclouds.openstack.swift.v1.options.ListContainerOptions;
import org.jclouds.openstack.swift.v1.reference.SwiftHeaders;
import org.jclouds.openstack.v2_0.internal.BaseOpenStackMockTest;
import org.testng.annotations.Test;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.io.ByteSource;
import com.squareup.okhttp.mockwebserver.MockResponse;
import com.squareup.okhttp.mockwebserver.MockWebServer;
import com.squareup.okhttp.mockwebserver.RecordedRequest;
/**
* Provides mock tests for the {@link ObjectApi}.
*/
@Test(groups = "unit", testName = "ObjectApiMockTest")
public class ObjectApiMockTest extends BaseOpenStackMockTest<SwiftApi> {
SimpleDateFormatDateService dates = new SimpleDateFormatDateService();
static final Payload PAYLOAD = newByteSourcePayload(ByteSource.wrap("swifty".getBytes()));
protected ImmutableList<SwiftObject> parsedObjectsForUrl(String baseUri) {
baseUri += "v1/MossoCloudFS_5bcf396e-39dd-45ff-93a1-712b9aba90a9/myContainer";
return ImmutableList.of(
SwiftObject.builder()
.name("test_obj_1")
.uri(URI.create(baseUri + "/test_obj_1"))
.etag("4281c348eaf83e70ddce0e07221c3d28")
.payload(payload(14, "application/octet-stream"))
.lastModified(dates.iso8601DateParse("2009-02-03T05:26:32.612278")).build(),
SwiftObject.builder()
.name("test_obj_2")
.uri(URI.create(baseUri + "/test_obj_2"))
.etag("b039efe731ad111bc1b0ef221c3849d0")
.payload(payload(64l, "application/octet-stream"))
.lastModified(dates.iso8601DateParse("2009-02-03T05:26:32.612278")).build(),
SwiftObject.builder()
.name("test obj 3")
.uri(URI.create(baseUri + "/test%20obj%203"))
.etag("0b2e80bd0744d9ebb20484149a57c82e")
.payload(payload(14, "application/octet-stream"))
.lastModified(dates.iso8601DateParse("2014-05-20T05:26:32.612278")).build());
}
public void testList() throws Exception {
MockWebServer server = mockOpenStackServer();
server.enqueue(addCommonHeaders(new MockResponse().setBody(stringFromResource("/access.json"))));
server.enqueue(addCommonHeaders(containerResponse()
.addHeader(CONTAINER_READ, CONTAINER_ACL_ANYBODY_READ)
.setBody(stringFromResource("/object_list.json"))));
try {
SwiftApi api = api(server.getUrl("/").toString(), "openstack-swift");
ObjectList objects = api.getObjectApiForRegionAndContainer("DFW", "myContainer").list();
assertEquals(objects, parsedObjectsForUrl(server.getUrl("/").toString()));
assertEquals(objects.getContainer().getName(), "myContainer");
assertTrue(objects.getContainer().getAnybodyRead().get());
assertEquals(server.getRequestCount(), 2);
assertAuthentication(server);
assertRequest(server.takeRequest(), "GET", "/v1/MossoCloudFS_5bcf396e-39dd-45ff-93a1-712b9aba90a9/myContainer/?format=json");
} finally {
server.shutdown();
}
}
public void testListWithOptions() throws Exception {
MockWebServer server = mockOpenStackServer();
server.enqueue(addCommonHeaders(new MockResponse().setBody(stringFromResource("/access.json"))));
server.enqueue(addCommonHeaders(containerResponse()
.addHeader(CONTAINER_READ, CONTAINER_ACL_ANYBODY_READ)
.setBody(stringFromResource("/object_list.json"))));
try {
SwiftApi api = api(server.getUrl("/").toString(), "openstack-swift");
ObjectList objects = api.getObjectApiForRegionAndContainer("DFW", "myContainer").list(new ListContainerOptions());
assertEquals(objects, parsedObjectsForUrl(server.getUrl("/").toString()));
assertEquals(objects.getContainer().getName(), "myContainer");
assertTrue(objects.getContainer().getAnybodyRead().get());
assertEquals(server.getRequestCount(), 2);
assertAuthentication(server);
assertRequest(server.takeRequest(), "GET", "/v1/MossoCloudFS_5bcf396e-39dd-45ff-93a1-712b9aba90a9/myContainer/?format=json");
} finally {
server.shutdown();
}
}
public void testListOptions() throws Exception {
MockWebServer server = mockOpenStackServer();
server.enqueue(addCommonHeaders(new MockResponse().setBody(stringFromResource("/access.json"))));
server.enqueue(addCommonHeaders(containerResponse().setBody(stringFromResource("/object_list.json"))));
try {
SwiftApi api = api(server.getUrl("/").toString(), "openstack-swift");
ObjectList objects = api.getObjectApiForRegionAndContainer("DFW", "myContainer").list(marker("test"));
assertEquals(objects, parsedObjectsForUrl(server.getUrl("/").toString()));
assertEquals(server.getRequestCount(), 2);
assertAuthentication(server);
assertRequest(server.takeRequest(), "GET", "/v1/MossoCloudFS_5bcf396e-39dd-45ff-93a1-712b9aba90a9/myContainer/?format=json&marker=test");
} finally {
server.shutdown();
}
}
public void testCreate() throws Exception {
MockWebServer server = mockOpenStackServer();
server.enqueue(addCommonHeaders(new MockResponse().setBody(stringFromResource("/access.json"))));
server.enqueue(addCommonHeaders(new MockResponse()
.setResponseCode(201)
.addHeader("ETag", "d9f5eb4bba4e2f2f046e54611bc8196b")));
try {
SwiftApi api = api(server.getUrl("/").toString(), "openstack-swift");
assertEquals(
api.getObjectApiForRegionAndContainer("DFW", "myContainer").put("myObject", PAYLOAD,
metadata(metadata)), "d9f5eb4bba4e2f2f046e54611bc8196b");
assertEquals(server.getRequestCount(), 2);
assertAuthentication(server);
RecordedRequest replace = server.takeRequest();
assertRequest(replace, "PUT", "/v1/MossoCloudFS_5bcf396e-39dd-45ff-93a1-712b9aba90a9/myContainer/myObject");
assertEquals(new String(replace.getBody()), "swifty");
for (Entry<String, String> entry : metadata.entrySet()) {
assertEquals(replace.getHeader(OBJECT_METADATA_PREFIX + entry.getKey().toLowerCase()), entry.getValue());
}
} finally {
server.shutdown();
}
}
public void testCreateWithSpacesAndSpecialCharacters() throws Exception {
MockWebServer server = mockOpenStackServer();
server.enqueue(addCommonHeaders(new MockResponse().setBody(stringFromResource("/access.json"))));
server.enqueue(addCommonHeaders(new MockResponse().setResponseCode(201).addHeader("ETag", "d9f5eb4bba4e2f2f046e54611bc8196b")));
final String containerName = "container # ! special";
final String objectName = "object # ! special";
try {
SwiftApi api = api(server.getUrl("/").toString(), "openstack-swift");
assertEquals(
api.getObjectApiForRegionAndContainer("DFW", containerName).put(objectName, PAYLOAD,
metadata(metadata)), "d9f5eb4bba4e2f2f046e54611bc8196b");
assertEquals(server.getRequestCount(), 2);
assertAuthentication(server);
RecordedRequest replace = server.takeRequest();
assertRequest(replace, "PUT", "/v1/MossoCloudFS_5bcf396e-39dd-45ff-93a1-712b9aba90a9/container%20%23%20%21%20special/object%20%23%20%21%20special");
assertEquals(new String(replace.getBody()), "swifty");
} finally {
server.shutdown();
}
}
public void testCreateWith408Retry() throws Exception {
MockWebServer server = mockOpenStackServer();
server.enqueue(addCommonHeaders(new MockResponse().setBody(stringFromResource("/access.json"))));
server.enqueue(addCommonHeaders(new MockResponse().setResponseCode(408))); // 1
server.enqueue(addCommonHeaders(new MockResponse().setResponseCode(408))); // 2
server.enqueue(addCommonHeaders(new MockResponse().setResponseCode(408))); // 3
// Finally success
server.enqueue(addCommonHeaders(new MockResponse()
.setResponseCode(201)
.addHeader("ETag", "d9f5eb4bba4e2f2f046e54611bc8196b")));
try {
Properties overrides = new Properties();
overrides.setProperty(PROPERTY_MAX_RETRIES, 5 + "");
SwiftApi api = api(server.getUrl("/").toString(), "openstack-swift", overrides);
assertEquals(
api.getObjectApiForRegionAndContainer("DFW", "myContainer").put("myObject", PAYLOAD,
metadata(metadata)), "d9f5eb4bba4e2f2f046e54611bc8196b");
assertEquals(server.getRequestCount(), 5);
assertAuthentication(server);
RecordedRequest replace = server.takeRequest();
// This should take a while.
assertRequest(replace, "PUT", "/v1/MossoCloudFS_5bcf396e-39dd-45ff-93a1-712b9aba90a9/myContainer/myObject");
assertEquals(new String(replace.getBody()), "swifty");
for (Entry<String, String> entry : metadata.entrySet()) {
assertEquals(replace.getHeader(OBJECT_METADATA_PREFIX + entry.getKey().toLowerCase()), entry.getValue());
}
} finally {
server.shutdown();
}
}
/** upper-cases first char, and lower-cases rest!! **/
public void testGetWithoutKnowingServerMessesWithMetadataKeyCaseFormat() throws Exception {
MockWebServer server = mockOpenStackServer();
server.enqueue(addCommonHeaders(new MockResponse().setBody(stringFromResource("/access.json"))));
server.enqueue(addCommonHeaders(objectResponse()
// note silly casing
.addHeader(OBJECT_METADATA_PREFIX + "Apiname", "swift")
.addHeader(OBJECT_METADATA_PREFIX + "Apiversion", "v1.1")));
try {
SwiftApi api = api(server.getUrl("/").toString(), "openstack-swift");
SwiftObject object = api.getObjectApiForRegionAndContainer("DFW", "myContainer").getWithoutBody("myObject");
assertEquals(object.getName(), "myObject");
assertEquals(object.getETag(), "8a964ee2a5e88be344f36c22562a6486");
assertEquals(object.getLastModified(), dates.rfc822DateParse("Fri, 12 Jun 2010 13:40:18 GMT"));
for (Entry<String, String> entry : object.getMetadata().entrySet()) {
assertEquals(object.getMetadata().get(entry.getKey().toLowerCase()), entry.getValue());
}
assertEquals(object.getPayload().getContentMetadata().getContentLength(), new Long(4));
assertEquals(object.getPayload().getContentMetadata().getContentType(), "text/plain; charset=UTF-8");
assertEquals(toStringAndClose(object.getPayload().openStream()), "");
assertEquals(server.getRequestCount(), 2);
assertAuthentication(server);
assertRequest(server.takeRequest(), "HEAD", "/v1/MossoCloudFS_5bcf396e-39dd-45ff-93a1-712b9aba90a9/myContainer/myObject");
} finally {
server.shutdown();
}
}
public void testGet() throws Exception {
MockWebServer server = mockOpenStackServer();
server.enqueue(addCommonHeaders(new MockResponse().setBody(stringFromResource("/access.json"))));
server.enqueue(addCommonHeaders(objectResponse()
// note silly casing
.addHeader(OBJECT_METADATA_PREFIX + "Apiname", "swift")
.addHeader(OBJECT_METADATA_PREFIX + "Apiversion", "v1.1")));
try {
SwiftApi api = api(server.getUrl("/").toString(), "openstack-swift");
SwiftObject object = api.getObjectApiForRegionAndContainer("DFW", "myContainer").get("myObject", tail(1));
assertEquals(object.getName(), "myObject");
assertEquals(object.getETag(), "8a964ee2a5e88be344f36c22562a6486");
assertEquals(object.getLastModified(), dates.rfc822DateParse("Fri, 12 Jun 2010 13:40:18 GMT"));
for (Entry<String, String> entry : object.getMetadata().entrySet()) {
assertEquals(object.getMetadata().get(entry.getKey().toLowerCase()), entry.getValue());
}
assertEquals(object.getPayload().getContentMetadata().getContentLength(), new Long(4));
assertEquals(object.getPayload().getContentMetadata().getContentType(), "text/plain; charset=UTF-8");
// note MWS doesn't process Range header at the moment
assertEquals(toStringAndClose(object.getPayload().openStream()), "ABCD");
assertEquals(server.getRequestCount(), 2);
assertEquals(server.takeRequest().getRequestLine(), "POST /tokens HTTP/1.1");
RecordedRequest get = server.takeRequest();
assertEquals(get.getRequestLine(),
"GET /v1/MossoCloudFS_5bcf396e-39dd-45ff-93a1-712b9aba90a9/myContainer/myObject HTTP/1.1");
assertEquals(get.getHeader(RANGE), "bytes=-1");
} finally {
server.shutdown();
}
}
@Test(expectedExceptions = HttpResponseException.class, timeOut = 20000)
public void testCreateWithTimeout() throws Exception {
MockWebServer server = mockOpenStackServer();
server.enqueue(addCommonHeaders(new MockResponse().setBody(stringFromResource("/access.json"))));
// Typically we would enqueue a response for the put. However, in this case, test the timeout by not providing one.
try {
Properties overrides = new Properties();
overrides.setProperty(PROPERTY_SO_TIMEOUT, 5000 + ""); // This time-outs the connection
overrides.setProperty(PROPERTY_MAX_RETRIES, 0 + ""); // 0 retries == 1 try. Semantics.
overrides.setProperty(PROPERTY_RETRY_DELAY_START, 0 + ""); // exponential backoff already working for this call. This is the delay BETWEEN attempts.
final SwiftApi api = api(server.getUrl("/").toString(), "openstack-swift", overrides);
api.getObjectApiForRegionAndContainer("DFW", "myContainer").put("myObject", new ByteSourcePayload(ByteSource.wrap("swifty".getBytes())), metadata(metadata));
fail("testReplaceTimeout test should have failed with an HttpResponseException.");
} finally {
server.shutdown();
}
}
public void testUpdateMetadata() throws Exception {
MockWebServer server = mockOpenStackServer();
server.enqueue(addCommonHeaders(new MockResponse().setBody(stringFromResource("/access.json"))));
server.enqueue(addCommonHeaders(objectResponse()
.addHeader(OBJECT_METADATA_PREFIX + "ApiName", "swift")
.addHeader(OBJECT_METADATA_PREFIX + "ApiVersion", "v1.1")));
try {
SwiftApi api = api(server.getUrl("/").toString(), "openstack-swift");
assertTrue(api.getObjectApiForRegionAndContainer("DFW", "myContainer").updateMetadata("myObject", metadata));
assertEquals(server.getRequestCount(), 2);
assertEquals(server.takeRequest().getRequestLine(), "POST /tokens HTTP/1.1");
RecordedRequest replaceRequest = server.takeRequest();
assertEquals(replaceRequest.getRequestLine(),
"POST /v1/MossoCloudFS_5bcf396e-39dd-45ff-93a1-712b9aba90a9/myContainer/myObject HTTP/1.1");
for (Entry<String, String> entry : metadata.entrySet()) {
assertEquals(replaceRequest.getHeader(OBJECT_METADATA_PREFIX + entry.getKey().toLowerCase()), entry.getValue());
}
} finally {
server.shutdown();
}
}
public void testUpdateMetadataContentType() throws Exception {
MockWebServer server = mockOpenStackServer();
server.enqueue(addCommonHeaders(new MockResponse().setBody(stringFromResource("/access.json"))));
server.enqueue(addCommonHeaders(objectResponse()
.addHeader(OBJECT_METADATA_PREFIX + "ApiName", "swift")
.addHeader(OBJECT_METADATA_PREFIX + "ApiVersion", "v1.1")));
try {
SwiftApi api = api(server.getUrl("/").toString(), "openstack-swift");
assertTrue(api.getObjectApiForRegionAndContainer("DFW", "myContainer").updateMetadata("myObject", metadata));
assertEquals(server.getRequestCount(), 2);
assertEquals(server.takeRequest().getRequestLine(), "POST /tokens HTTP/1.1");
RecordedRequest replaceRequest = server.takeRequest();
assertEquals(replaceRequest.getHeaders("Content-Type").get(0), "", "updateMetadata should send an empty content-type header, but sent "
+ replaceRequest.getHeaders("Content-Type").get(0).toString());
assertEquals(replaceRequest.getRequestLine(),
"POST /v1/MossoCloudFS_5bcf396e-39dd-45ff-93a1-712b9aba90a9/myContainer/myObject HTTP/1.1");
for (Entry<String, String> entry : metadata.entrySet()) {
assertEquals(replaceRequest.getHeader(OBJECT_METADATA_PREFIX + entry.getKey().toLowerCase()), entry.getValue());
}
} finally {
server.shutdown();
}
}
public void testDeleteMetadata() throws Exception {
MockWebServer server = mockOpenStackServer();
server.enqueue(addCommonHeaders(new MockResponse().setBody(stringFromResource("/access.json"))));
server.enqueue(addCommonHeaders(objectResponse()));
try {
SwiftApi api = api(server.getUrl("/").toString(), "openstack-swift");
assertTrue(api.getObjectApiForRegionAndContainer("DFW", "myContainer").deleteMetadata("myObject", metadata));
assertEquals(server.getRequestCount(), 2);
assertEquals(server.takeRequest().getRequestLine(), "POST /tokens HTTP/1.1");
RecordedRequest deleteRequest = server.takeRequest();
assertEquals(deleteRequest.getRequestLine(),
"POST /v1/MossoCloudFS_5bcf396e-39dd-45ff-93a1-712b9aba90a9/myContainer/myObject HTTP/1.1");
for (String key : metadata.keySet()) {
assertEquals(deleteRequest.getHeader(OBJECT_REMOVE_METADATA_PREFIX + key.toLowerCase()), "ignored");
}
} finally {
server.shutdown();
}
}
public void testDelete() throws Exception {
MockWebServer server = mockOpenStackServer();
server.enqueue(addCommonHeaders(new MockResponse().setBody(stringFromResource("/access.json"))));
server.enqueue(addCommonHeaders(new MockResponse().setResponseCode(204)));
try {
SwiftApi api = api(server.getUrl("/").toString(), "openstack-swift");
api.getObjectApiForRegionAndContainer("DFW", "myContainer").delete("myObject");
assertEquals(server.getRequestCount(), 2);
assertEquals(server.takeRequest().getRequestLine(), "POST /tokens HTTP/1.1");
RecordedRequest deleteRequest = server.takeRequest();
assertEquals(deleteRequest.getRequestLine(),
"DELETE /v1/MossoCloudFS_5bcf396e-39dd-45ff-93a1-712b9aba90a9/myContainer/myObject HTTP/1.1");
} finally {
server.shutdown();
}
}
public void testAlreadyDeleted() throws Exception {
MockWebServer server = mockOpenStackServer();
server.enqueue(addCommonHeaders(new MockResponse().setBody(stringFromResource("/access.json"))));
server.enqueue(addCommonHeaders(new MockResponse().setResponseCode(404)));
try {
SwiftApi api = api(server.getUrl("/").toString(), "openstack-swift");
api.getObjectApiForRegionAndContainer("DFW", "myContainer").delete("myObject");
assertEquals(server.getRequestCount(), 2);
assertEquals(server.takeRequest().getRequestLine(), "POST /tokens HTTP/1.1");
RecordedRequest deleteRequest = server.takeRequest();
assertEquals(deleteRequest.getRequestLine(),
"DELETE /v1/MossoCloudFS_5bcf396e-39dd-45ff-93a1-712b9aba90a9/myContainer/myObject HTTP/1.1");
} finally {
server.shutdown();
}
}
public void testCopyObject() throws Exception {
MockWebServer server = mockOpenStackServer();
server.enqueue(addCommonHeaders(new MockResponse().setBody(stringFromResource("/access.json"))));
server.enqueue(addCommonHeaders(new MockResponse().setResponseCode(201)
.addHeader(SwiftHeaders.OBJECT_COPY_FROM, "/bar/foo.txt")));
try {
SwiftApi api = api(server.getUrl("/").toString(), "openstack-swift");
assertTrue(api.getObjectApiForRegionAndContainer("DFW", "foo")
.copy("bar.txt", "bar", "foo.txt"));
assertEquals(server.getRequestCount(), 2);
assertEquals(server.takeRequest().getRequestLine(), "POST /tokens HTTP/1.1");
RecordedRequest copyRequest = server.takeRequest();
assertEquals(copyRequest.getRequestLine(),
"PUT /v1/MossoCloudFS_5bcf396e-39dd-45ff-93a1-712b9aba90a9/foo/bar.txt HTTP/1.1");
} finally {
server.shutdown();
}
}
@Test(expectedExceptions = CopyObjectException.class)
public void testCopyObjectFail() throws InterruptedException, IOException {
MockWebServer server = mockOpenStackServer();
server.enqueue(addCommonHeaders(new MockResponse().setBody(stringFromResource("/access.json"))));
server.enqueue(addCommonHeaders(new MockResponse().setResponseCode(404)
.addHeader(SwiftHeaders.OBJECT_COPY_FROM, "/bogus/foo.txt")));
try {
SwiftApi api = api(server.getUrl("/").toString(), "openstack-swift");
// the following line will throw the CopyObjectException
api.getObjectApiForRegionAndContainer("DFW", "foo").copy("bar.txt", "bogus", "foo.txt");
} finally {
server.shutdown();
}
}
private static final Map<String, String> metadata = ImmutableMap.of("ApiName", "swift", "ApiVersion", "v1.1");
static MockResponse objectResponse() {
return new MockResponse()
.addHeader("Last-Modified", "Fri, 12 Jun 2010 13:40:18 GMT")
.addHeader("ETag", "8a964ee2a5e88be344f36c22562a6486")
// TODO: MWS doesn't allow you to return content length w/o content
// on HEAD!
.setBody("ABCD".getBytes(US_ASCII))
.addHeader("Content-Length", "4").addHeader("Content-Type", "text/plain; charset=UTF-8");
}
static Payload payload(long bytes, String contentType) {
Payload payload = newByteSourcePayload(ByteSource.empty());
payload.getContentMetadata().setContentLength(bytes);
payload.getContentMetadata().setContentType(contentType);
return payload;
}
}