jobhunter.api.infojobs.Client.java Source code

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Here is the source code for jobhunter.api.infojobs.Client.java

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/*
 * Copyright (C) 2014 Alejandro Ayuso
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package jobhunter.api.infojobs;

import java.io.IOException;
import java.util.Optional;

import jobhunter.api.infojobs.model.Error;

import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.fasterxml.jackson.databind.ObjectMapper;

public class Client {

    private static final Logger l = LoggerFactory.getLogger(Client.class);
    private static final String clientId = null; // REPLACE-ME!!!
    private static final String privateKey = null; // REPLACE-ME!!!
    private static final HttpHost targetHost = new HttpHost("api.infojobs.net", 443, "https");
    private static final ObjectMapper mapper = new ObjectMapper();

    private final CredentialsProvider provider;

    public Client() {
        provider = new BasicCredentialsProvider();
        provider.setCredentials(new AuthScope(targetHost.getHostName(), targetHost.getPort()),
                new UsernamePasswordCredentials(clientId, privateKey));
    }

    public <T> Optional<T> get(Class<T> clazz, String url) throws InfoJobsAPIException {
        HttpGet httpGet = new HttpGet(url);
        try (CloseableHttpClient client = HttpClients.custom().setDefaultCredentialsProvider(provider).build()) {
            try (CloseableHttpResponse response = client.execute(httpGet)) {
                if (response.getStatusLine().getStatusCode() == 200) {
                    T entity = mapper.readValue(response.getEntity().getContent(), clazz);
                    return Optional.of(entity);
                } else {
                    Error error = mapper.readValue(response.getEntity().getContent(), Error.class);
                    throw new InfoJobsAPIException(error);
                }
            }
        } catch (IOException e) {
            l.error("Failed to GET {} from {}", clazz.getCanonicalName(), url, e);
            throw new InfoJobsAPIException(e.getLocalizedMessage());
        }
    }

}