net.nikore.gozer.router.RibbonUtils.java Source code

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Here is the source code for net.nikore.gozer.router.RibbonUtils.java

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/**
 * Copyright (C) 2015 Matt Christiansen (matt@nikore.net)
 *
 * 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 net.nikore.gozer.router;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;

import javax.servlet.http.HttpServletRequest;

import com.google.inject.Inject;
import com.netflix.ribbon.transport.netty.http.LoadBalancingHttpClient;

import io.netty.buffer.ByteBuf;
import io.netty.handler.codec.http.HttpMethod;
import io.reactivex.netty.protocol.http.client.HttpClientRequest;
import net.nikore.gozer.constants.GozerHeaders;

public class RibbonUtils {
    private final LoadBalancingHttpClient<ByteBuf, ByteBuf> client;

    @Inject
    public RibbonUtils(LoadBalancingHttpClient<ByteBuf, ByteBuf> client) {
        this.client = client;
    }

    public HttpMethod getVerb(HttpServletRequest request) {
        String method = request.getMethod();

        if (method == null) {
            return HttpMethod.GET;
        } else {
            return HttpMethod.valueOf(method);
        }
    }

    public SimpleRibbonResponse simpleRequest(HttpClientRequest<ByteBuf> request) {
        CountDownLatch latch = new CountDownLatch(1);
        final SimpleRibbonResponse[] rtn = new SimpleRibbonResponse[1];

        client.submit(request).subscribe(response -> {
            response.getContent().subscribe(content -> {
                boolean gzip = (response.getHeaders().get(GozerHeaders.CONTENT_ENCODING.getName()) != null);
                byte[] bytes = new byte[content.readableBytes()];
                content.readBytes(bytes);
                rtn[0] = new SimpleRibbonResponse(response.getStatus().code(), bytes, gzip);
                latch.countDown();
            });
        });

        try {
            latch.await(5, TimeUnit.DAYS);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return rtn[0];
    }
}