org.zalando.riptide.Requester Maven / Gradle / Ivy

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package org.zalando.riptide;

/*
 * ⁣
 * Riptide
 * ⁣⁣
 * Copyright (C) 2015 - 2016 Zalando SE
 * ⁣⁣
 * 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.
 * ⁣
 */

import com.google.common.collect.Lists;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.util.concurrent.ListenableFuture;

import javax.annotation.Nullable;
import java.io.IOException;

public abstract class Requester extends Dispatcher {

    private final HttpHeaders headers = new HttpHeaders();

    public final Requester header(final String name, final String value) {
        headers.add(name, value);
        return this;
    }

    public final Requester headers(final HttpHeaders headers) {
        this.headers.putAll(headers);
        return this;
    }

    public final Requester accept(final MediaType acceptableMediaType, final MediaType... acceptableMediaTypes) {
        headers.setAccept(Lists.asList(acceptableMediaType, acceptableMediaTypes));
        return this;
    }

    public final Requester contentType(final MediaType contentType) {
        headers.setContentType(contentType);
        return this;
    }

    public final  Dispatcher body(final T body) throws IOException {
        return execute(headers, body);
    }

    @Override
    public final  ListenableFuture dispatch(final RoutingTree tree) throws IOException {
        return execute(headers, null).dispatch(tree);
    }

    protected abstract  Dispatcher execute(final HttpHeaders headers, final @Nullable T body) throws IOException;

}