/*
* 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.zuul.filters.route;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.notNullValue;
import static org.hamcrest.Matchers.startsWith;
import static org.hamcrest.core.IsNull.nullValue;
import static org.junit.Assert.assertThat;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.net.URI;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Collections;
import org.junit.Before;
import org.junit.Test;
import org.springframework.cloud.netflix.ribbon.support.RibbonRequestCustomizer;
import org.springframework.cloud.netflix.zuul.filters.ZuulProperties;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.StreamUtils;
import com.netflix.client.http.HttpRequest;
import com.netflix.client.http.HttpRequest.Verb;
/**
* @author Spencer Gibb
*/
public class RestClientRibbonCommandTests {
private ZuulProperties zuulProperties;
@Before
public void setUp() {
zuulProperties = new ZuulProperties();
}
/**
* Tests old constructors kept for backwards compatibility with Spring Cloud Sleuth 1.x versions
*/
@Test
@Deprecated
public void testNullEntityWithOldConstruct() throws Exception {
String uri = "http://example.com";
LinkedMultiValueMap<String, String> headers = new LinkedMultiValueMap<>();
headers.add("my-header", "my-value");
LinkedMultiValueMap<String, String> params = new LinkedMultiValueMap<>();
params.add("myparam", "myparamval");
RestClientRibbonCommand command =
new RestClientRibbonCommand("cmd", null,Verb.GET ,uri, false, headers, params, null);
HttpRequest request = command.createRequest();
assertThat("uri is wrong", request.getUri().toString(), startsWith(uri));
assertThat("my-header is wrong", request.getHttpHeaders().getFirstValue("my-header"), is(equalTo("my-value")));
assertThat("myparam is missing", request.getQueryParams().get("myparam").iterator().next(), is(equalTo("myparamval")));
command =
new RestClientRibbonCommand("cmd", null,
new RibbonCommandContext("example", "GET", uri, false, headers, params, null),
zuulProperties);
request = command.createRequest();
assertThat("uri is wrong", request.getUri().toString(), startsWith(uri));
assertThat("my-header is wrong", request.getHttpHeaders().getFirstValue("my-header"), is(equalTo("my-value")));
assertThat("myparam is missing", request.getQueryParams().get("myparam").iterator().next(), is(equalTo("myparamval")));
}
@Test
public void testNullEntity() throws Exception {
String uri = "http://example.com";
LinkedMultiValueMap<String, String> headers = new LinkedMultiValueMap<>();
headers.add("my-header", "my-value");
LinkedMultiValueMap<String, String> params = new LinkedMultiValueMap<>();
params.add("myparam", "myparamval");
RestClientRibbonCommand command =
new RestClientRibbonCommand("cmd", null,
new RibbonCommandContext("example", "GET", uri, false, headers, params, null, new ArrayList<RibbonRequestCustomizer>()),
zuulProperties);
HttpRequest request = command.createRequest();
assertThat("uri is wrong", request.getUri().toString(), startsWith(uri));
assertThat("my-header is wrong", request.getHttpHeaders().getFirstValue("my-header"), is(equalTo("my-value")));
assertThat("myparam is missing", request.getQueryParams().get("myparam").iterator().next(), is(equalTo("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");
}
@Test
public void testNonEmptyEntityDelete() throws Exception {
String entityValue = "abcd";
testEntity(entityValue, new ByteArrayInputStream(entityValue.getBytes()), true, "DELETE");
}
void testEntity(String entityValue, ByteArrayInputStream requestEntity, boolean addContentLengthHeader, String method) throws Exception {
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<HttpRequest.Builder>() {
@Override
public boolean accepts(Class builderClass) {
return builderClass == HttpRequest.Builder.class;
}
@Override
public void customize(HttpRequest.Builder builder) {
builder.header("from-customizer", "foo");
}
};
RibbonCommandContext context = new RibbonCommandContext("example", method,
uri.toString(), false, headers, new LinkedMultiValueMap<String, String>(),
requestEntity, Collections.singletonList(requestCustomizer));
context.setContentLength(length);
RestClientRibbonCommand command = new RestClientRibbonCommand("cmd", null, context, zuulProperties);
HttpRequest request = command.createRequest();
assertThat("uri is wrong", request.getUri().toString(), startsWith(uri.toString()));
if (addContentLengthHeader) {
assertThat("Content-Length is wrong", request.getHttpHeaders().getFirstValue("Content-Length"),
is(equalTo(lengthString)));
}
assertThat("from-customizer is wrong", request.getHttpHeaders().getFirstValue("from-customizer"),
is(equalTo("foo")));
if (method.equalsIgnoreCase("DELETE")) {
assertThat("entity is was non-null", request.getEntity(), is(nullValue()));
} else {
assertThat("entity is missing", request.getEntity(), is(notNullValue()));
assertThat("entity is wrong type", InputStream.class.isAssignableFrom(request.getEntity().getClass()), is(true));
InputStream entity = (InputStream) request.getEntity();
String string = StreamUtils.copyToString(entity, Charset.forName("UTF-8"));
assertThat("content is wrong", string, is(equalTo(entityValue)));
}
}
}