GetStationsDataRequest.java

/**
 * Copyright (c) 2010-2016 by the respective copyright holders.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.openhab.binding.netatmo.internal.weather;

import static org.openhab.io.net.http.HttpUtil.executeUrl;

import java.io.ByteArrayInputStream;
import java.io.InputStream;

import org.apache.commons.lang.builder.ToStringBuilder;
import org.openhab.binding.netatmo.internal.messages.AbstractRequest;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * A getstationsdata request returns information about user's weather
 * stations such as last measures, state, etc.
 *
 * @author Rob Nielsen
 * @since 1.8.0
 * @see <a href="https://api.netatmo.com/api/getstationsdata">getstationsdata</a>
 */
public class GetStationsDataRequest extends AbstractRequest {

    private static final String URL = API_BASE_URL + "getstationsdata";

    private static final String CONTENT = "access_token=%s";

    private static final Logger logger = LoggerFactory.getLogger(GetStationsDataRequest.class);

    private final String accessToken;

    /**
     * Creates a request for information about user's weather stations
     * such as last measures, state, etc.
     * 
     * @param accessToken
     *            mandatory, must not be <code>null</code>
     */
    public GetStationsDataRequest(final String accessToken) {
        assert accessToken != null : "accessToken must not be null!";

        this.accessToken = accessToken;
    }

    @Override
    public GetStationsDataResponse execute() {
        final String content = String.format(CONTENT, this.accessToken);

        String json = null;
        try {
            json = executeQuery(content);

            return JSON.readValue(json, GetStationsDataResponse.class);
        } catch (final Exception e) {
            throw newException("Could not execute get stations data request!", e, URL, content, json);
        }
    }

    @Override
    public String toString() {
        final ToStringBuilder builder = createToStringBuilder();
        builder.appendSuper(super.toString());
        builder.append("accessToken", this.accessToken);

        return builder.toString();
    }

    protected String executeQuery(final String content) throws Exception {
        final InputStream stream = new ByteArrayInputStream(content.getBytes(CHARSET));

        logger.debug("HTTP Post url='{}' content='{}'", URL, content);

        return executeUrl(HTTP_POST, URL, HTTP_HEADERS, stream, HTTP_CONTENT_TYPE, HTTP_REQUEST_TIMEOUT);
    }
}