OkHttpStreamFetcher.java

/*
 * Copyright (C) 2014 Freddie (Musenkishi) Lust-Hed
 *
 * 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 com.musenkishi.wally.dataprovider.okhttp;

import com.bumptech.glide.Priority;
import com.bumptech.glide.load.data.DataFetcher;
import com.bumptech.glide.load.model.GlideUrl;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;

import java.io.IOException;
import java.io.InputStream;

/**
 * Fetches an {@link InputStream} using the okhttp library.
 */
public class OkHttpStreamFetcher implements DataFetcher<InputStream> {
    private final OkHttpClient client;
    private final GlideUrl url;
    private volatile Request request;
    private InputStream stream;

    public OkHttpStreamFetcher(OkHttpClient client, GlideUrl url) {
        this.client = client;
        this.url = url;
    }

    @Override
    public InputStream loadData(Priority priority) throws Exception {
        request = new Request.Builder()
                .url(url.toString())
                .build();

        stream = client.newCall(request)
                .execute()
                .body()
                .byteStream();
        return stream;
    }

    @Override
    public void cleanup() {
        if (stream == null) {
            return;
        }
        try {
            stream.close();
        } catch (IOException e) {
            // Ignored
        }
    }

    @Override
    public String getId() {
        return url.toString();
    }

    @Override
    public void cancel() {
        if (request != null) {
            client.cancel(request);
        }
    }
}