/*
* Copyright 2013-2016 the original author or 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 org.springframework.cloud.netflix.ribbon.apache;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.instanceOf;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.not;
import static org.hamcrest.Matchers.notNullValue;
import static org.hamcrest.Matchers.startsWith;
import static org.junit.Assert.assertThat;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.net.URI;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Collections;
import org.apache.http.HttpEntity;
import org.apache.http.HttpEntityEnclosingRequest;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.client.methods.RequestBuilder;
import org.junit.Test;
import org.springframework.cloud.netflix.feign.encoding.HttpEncoding;
import org.springframework.cloud.netflix.ribbon.support.RibbonRequestCustomizer;
import org.springframework.cloud.netflix.zuul.filters.route.RibbonCommandContext;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.StreamUtils;
/**
* @author Spencer Gibb
*/
public class RibbonApacheHttpRequestTests {
@Test
public void testNullEntity() throws Exception {
String uri = "http://example.com";
LinkedMultiValueMap<String, String> headers = new LinkedMultiValueMap<>();
headers.add("my-header", "my-value");
headers.add(HttpEncoding.CONTENT_LENGTH, "5192");
LinkedMultiValueMap<String, String> params = new LinkedMultiValueMap<>();
params.add("myparam", "myparamval");
RibbonApacheHttpRequest httpRequest =
new RibbonApacheHttpRequest(
new RibbonCommandContext("example", "GET", uri, false, headers, params, null, new ArrayList<RibbonRequestCustomizer>()));
HttpUriRequest request = httpRequest.toRequest(RequestConfig.custom().build());
assertThat("request is wrong type", request, is(not(instanceOf(HttpEntityEnclosingRequest.class))));
assertThat("uri is wrong", request.getURI().toString(), startsWith(uri));
assertThat("my-header is missing", request.getFirstHeader("my-header"), is(notNullValue()));
assertThat("my-header is wrong", request.getFirstHeader("my-header").getValue(), is(equalTo("my-value")));
assertThat("Content-Length is wrong", request.getFirstHeader(HttpEncoding.CONTENT_LENGTH).getValue(), is(equalTo("5192")));
assertThat("myparam is missing", request.getURI().getQuery(), is(equalTo("myparam=myparamval")));
}
@Test
// this situation happens, see https://github.com/spring-cloud/spring-cloud-netflix/issues/1042#issuecomment-227723877
public void testEmptyEntityGet() throws Exception {
String entityValue = "";
testEntity(entityValue, new ByteArrayInputStream(entityValue.getBytes()), false, "GET");
}
@Test
public void testNonEmptyEntityPost() throws Exception {
String entityValue = "abcd";
testEntity(entityValue, new ByteArrayInputStream(entityValue.getBytes()), true, "POST");
}
void testEntity(String entityValue, ByteArrayInputStream requestEntity, boolean addContentLengthHeader, String method) throws IOException {
String lengthString = String.valueOf(entityValue.length());
Long length = null;
URI uri = URI.create("http://example.com");
LinkedMultiValueMap<String, String> headers = new LinkedMultiValueMap<>();
if (addContentLengthHeader) {
headers.add("Content-Length", lengthString);
length = (long) entityValue.length();
}
RibbonRequestCustomizer requestCustomizer = new RibbonRequestCustomizer<RequestBuilder>() {
@Override
public boolean accepts(Class builderClass) {
return builderClass == RequestBuilder.class;
}
@Override
public void customize(RequestBuilder builder) {
builder.addHeader("from-customizer", "foo");
}
};
RibbonCommandContext context = new RibbonCommandContext("example", method,
uri.toString(), false, headers, new LinkedMultiValueMap<String, String>(),
requestEntity, Collections.singletonList(requestCustomizer));
context.setContentLength(length);
RibbonApacheHttpRequest httpRequest = new RibbonApacheHttpRequest(context);
HttpUriRequest request = httpRequest.toRequest(RequestConfig.custom().build());
assertThat("request is wrong type", request, is(instanceOf(HttpEntityEnclosingRequest.class)));
assertThat("uri is wrong", request.getURI().toString(), startsWith(uri.toString()));
if (addContentLengthHeader) {
assertThat("Content-Length is missing", request.getFirstHeader("Content-Length"), is(notNullValue()));
assertThat("Content-Length is wrong", request.getFirstHeader("Content-Length").getValue(),
is(equalTo(lengthString)));
}
assertThat("from-customizer is missing", request.getFirstHeader("from-customizer"), is(notNullValue()));
assertThat("from-customizer is wrong", request.getFirstHeader("from-customizer").getValue(),
is(equalTo("foo")));
HttpEntityEnclosingRequest entityRequest = (HttpEntityEnclosingRequest) request;
assertThat("entity is missing", entityRequest.getEntity(), is(notNullValue()));
HttpEntity entity = entityRequest.getEntity();
assertThat("contentLength is wrong", entity.getContentLength(), is(equalTo((long)entityValue.length())));
assertThat("content is missing", entity.getContent(), is(notNullValue()));
String string = StreamUtils.copyToString(entity.getContent(), Charset.forName("UTF-8"));
assertThat("content is wrong", string, is(equalTo(entityValue)));
}
}