com.braisgabin.fbstats.Api.java Source code

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Here is the source code for com.braisgabin.fbstats.Api.java

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/*
 * Copyright 2014 Brais Gabin
 * 
 * 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.braisgabin.fbstats;

import java.io.IOException;

import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;

public class Api {
    private final OkHttpClient client;
    private final String accessToken;
    private final ObjectMapper mapper;

    public Api(String accessToken) {
        this.accessToken = accessToken;

        this.client = new OkHttpClient();

        this.mapper = new ObjectMapper();
        this.mapper.setVisibility(PropertyAccessor.ALL, Visibility.NONE);
        this.mapper.setVisibility(PropertyAccessor.FIELD, Visibility.NONE);
        this.mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        this.mapper.configure(DeserializationFeature.FAIL_ON_INVALID_SUBTYPE, true);
    }

    public <T> T download(String url, Class<T> clazz) throws JsonParseException, JsonMappingException, IOException {
        Request request = new Request.Builder().url(url).addHeader("Authorization", "OAuth " + accessToken).build();

        Response response = client.newCall(request).execute();
        if (!response.isSuccessful()) {
            throw new RuntimeException(response.body().string());
        }
        return mapper.readValue(response.body().byteStream(), clazz);
    }
}