/*
* 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 java.io.InputStream;
import java.net.URI;
import java.util.List;
import org.springframework.cloud.netflix.zuul.filters.ZuulProperties;
import org.springframework.cloud.netflix.zuul.filters.route.support.AbstractRibbonCommand;
import org.springframework.http.HttpMethod;
import org.springframework.util.MultiValueMap;
import com.netflix.client.config.IClientConfig;
import com.netflix.client.http.HttpRequest;
import com.netflix.client.http.HttpResponse;
import com.netflix.niws.client.http.RestClient;
import static org.springframework.cloud.netflix.ribbon.support.RibbonRequestCustomizer.Runner.customize;
/**
* Hystrix wrapper around Eureka Ribbon command
*
* see <a href="https://github.com/Netflix/zuul/blob/master/zuul-netflix/src/main/java/com/netflix/zuul/dependency/ribbon/hystrix/RibbonCommand.java">original</a>
*/
@SuppressWarnings("deprecation")
public class RestClientRibbonCommand extends AbstractRibbonCommand<RestClient, HttpRequest, HttpResponse> {
public RestClientRibbonCommand(String commandKey, RestClient client,
RibbonCommandContext context, ZuulProperties zuulProperties) {
super(commandKey, client, context, zuulProperties);
}
public RestClientRibbonCommand(String commandKey, RestClient client,
RibbonCommandContext context, ZuulProperties zuulProperties,
ZuulFallbackProvider zuulFallbackProvider) {
super(commandKey, client, context, zuulProperties, zuulFallbackProvider);
}
public RestClientRibbonCommand(String commandKey, RestClient client,
RibbonCommandContext context, ZuulProperties zuulProperties,
ZuulFallbackProvider zuulFallbackProvider, IClientConfig config) {
super(commandKey, client, context, zuulProperties, zuulFallbackProvider, config);
}
@Deprecated
public RestClientRibbonCommand(String commandKey, RestClient restClient,
HttpRequest.Verb verb, String uri, Boolean retryable,
MultiValueMap<String, String> headers, MultiValueMap<String, String> params,
InputStream requestEntity) {
this(commandKey, restClient, new RibbonCommandContext(commandKey, verb.verb(),
uri, retryable, headers, params, requestEntity), new ZuulProperties());
}
@Override
protected HttpRequest createRequest() throws Exception {
final InputStream requestEntity;
// ApacheHttpClient4Handler does not support body in delete requests
if (getContext().getMethod().equalsIgnoreCase(HttpMethod.DELETE.toString())) {
requestEntity = null;
} else {
requestEntity = this.context.getRequestEntity();
}
HttpRequest.Builder builder = HttpRequest.newBuilder()
.verb(getVerb(this.context.getMethod())).uri(this.context.uri())
.entity(requestEntity);
if (this.context.getRetryable() != null) {
builder.setRetriable(this.context.getRetryable());
}
for (String name : this.context.getHeaders().keySet()) {
List<String> values = this.context.getHeaders().get(name);
for (String value : values) {
builder.header(name, value);
}
}
for (String name : this.context.getParams().keySet()) {
List<String> values = this.context.getParams().get(name);
for (String value : values) {
builder.queryParams(name, value);
}
}
customizeRequest(builder);
return builder.build();
}
protected void customizeRequest(HttpRequest.Builder requestBuilder) {
customize(this.context.getRequestCustomizers(), requestBuilder);
}
@Deprecated
public URI getUri() {
return this.context.uri();
}
@SuppressWarnings("unused")
@Deprecated
public HttpRequest.Verb getVerb() {
return getVerb(this.context.getVerb());
}
protected static HttpRequest.Verb getVerb(String method) {
if (method == null)
return HttpRequest.Verb.GET;
try {
return HttpRequest.Verb.valueOf(method.toUpperCase());
}
catch (IllegalArgumentException e) {
return HttpRequest.Verb.GET;
}
}
}