- Split AudioScrobblerSevice into two classes - Change api to https in last.fm Audio Scrobbler Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com> Signed-off-by: Andrew DeMaria <lostonamountain@gmail.com>master
Shen-Ta Hsieh
5 years ago
committed by
Andrew DeMaria
parent
af97925124
commit
e3b3bc9d2b
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/* |
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This file is part of Airsonic. |
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Airsonic is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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Airsonic is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with Airsonic. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2016 (C) Airsonic Authors |
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Based upon Subsonic, Copyright 2009 (C) Sindre Mehus |
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*/ |
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package org.airsonic.player.service.scrobbler; |
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import org.airsonic.player.domain.MediaFile; |
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import org.airsonic.player.util.StringUtil; |
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import org.apache.commons.codec.digest.DigestUtils; |
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import org.apache.http.NameValuePair; |
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import org.apache.http.client.ClientProtocolException; |
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import org.apache.http.client.ResponseHandler; |
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import org.apache.http.client.config.RequestConfig; |
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import org.apache.http.client.entity.UrlEncodedFormEntity; |
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import org.apache.http.client.methods.HttpGet; |
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import org.apache.http.client.methods.HttpPost; |
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import org.apache.http.client.methods.HttpUriRequest; |
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import org.apache.http.impl.client.BasicResponseHandler; |
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import org.apache.http.impl.client.CloseableHttpClient; |
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import org.apache.http.impl.client.HttpClients; |
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import org.apache.http.message.BasicNameValuePair; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import java.io.IOException; |
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import java.io.UnsupportedEncodingException; |
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import java.net.URI; |
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import java.net.URISyntaxException; |
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import java.util.*; |
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import java.util.concurrent.LinkedBlockingQueue; |
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/** |
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* Provides services for "audioscrobbling" at www.last.fm. |
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* <br/> |
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* See https://www.last.fm/api/submissions
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*/ |
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public class LastFMScrobbler { |
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private static final Logger LOG = LoggerFactory.getLogger(LastFMScrobbler.class); |
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private static final int MAX_PENDING_REGISTRATION = 2000; |
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private RegistrationThread thread; |
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private final LinkedBlockingQueue<RegistrationData> queue = new LinkedBlockingQueue<RegistrationData>(); |
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private final RequestConfig requestConfig = RequestConfig.custom() |
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.setConnectTimeout(15000) |
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.setSocketTimeout(15000) |
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.build(); |
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/** |
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* Registers the given media file at www.last.fm. This method returns immediately, the actual registration is done |
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* by a separate thread. |
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* |
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* @param mediaFile The media file to register. |
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* @param username last.fm username. |
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* @param password last.fm password. |
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* @param submission Whether this is a submission or a now playing notification. |
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* @param time Event time, or {@code null} to use current time. |
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*/ |
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public synchronized void register(MediaFile mediaFile, String username, String password, boolean submission, Date time) { |
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if (thread == null) { |
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thread = new RegistrationThread(); |
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thread.start(); |
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} |
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if (queue.size() >= MAX_PENDING_REGISTRATION) { |
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LOG.warn("Last.fm scrobbler queue is full. Ignoring " + mediaFile); |
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return; |
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} |
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RegistrationData registrationData = createRegistrationData(mediaFile, username, password, submission, time); |
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if (registrationData == null) { |
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return; |
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} |
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try { |
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queue.put(registrationData); |
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} catch (InterruptedException x) { |
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LOG.warn("Interrupted while queuing Last.fm scrobble: " + x.toString()); |
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} |
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} |
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private RegistrationData createRegistrationData(MediaFile mediaFile, String username, String password, boolean submission, Date time) { |
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RegistrationData reg = new RegistrationData(); |
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reg.username = username; |
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reg.password = password; |
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reg.artist = mediaFile.getArtist(); |
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reg.album = mediaFile.getAlbumName(); |
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reg.title = mediaFile.getTitle(); |
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reg.duration = mediaFile.getDurationSeconds() == null ? 0 : mediaFile.getDurationSeconds(); |
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reg.time = time == null ? new Date() : time; |
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reg.submission = submission; |
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return reg; |
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} |
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/** |
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* Scrobbles the given song data at last.fm, using the protocol defined at http://www.last.fm/api/submissions.
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* |
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* @param registrationData Registration data for the song. |
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*/ |
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private void scrobble(RegistrationData registrationData) throws URISyntaxException, ClientProtocolException, IOException { |
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if (registrationData == null) { |
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return; |
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} |
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String[] lines = authenticate(registrationData); |
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if (lines == null) { |
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return; |
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} |
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String sessionId = lines[1]; |
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String nowPlayingUrl = lines[2]; |
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String submissionUrl = lines[3]; |
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if (registrationData.submission) { |
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lines = registerSubmission(registrationData, sessionId, submissionUrl); |
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} else { |
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lines = registerNowPlaying(registrationData, sessionId, nowPlayingUrl); |
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} |
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if (lines[0].startsWith("FAILED")) { |
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LOG.warn("Failed to scrobble song '" + registrationData.title + "' at Last.fm: " + lines[0]); |
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} else if (lines[0].startsWith("BADSESSION")) { |
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LOG.warn("Failed to scrobble song '" + registrationData.title + "' at Last.fm. Invalid session."); |
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} else if (lines[0].startsWith("OK")) { |
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LOG.info("Successfully registered " + (registrationData.submission ? "submission" : "now playing") + |
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" for song '" + registrationData.title + "' for user " + registrationData.username + " at Last.fm: " + registrationData.time); |
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} |
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} |
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/** |
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* Returns the following lines if authentication succeeds: |
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* <p/> |
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* Line 0: Always "OK" |
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* Line 1: Session ID, e.g., "17E61E13454CDD8B68E8D7DEEEDF6170" |
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* Line 2: URL to use for now playing, e.g., "https://post.audioscrobbler.com:80/np_1.2" |
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* Line 3: URL to use for submissions, e.g., "https://post2.audioscrobbler.com:80/protocol_1.2" |
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* <p/> |
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* If authentication fails, <code>null</code> is returned. |
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*/ |
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private String[] authenticate(RegistrationData registrationData) throws URISyntaxException, ClientProtocolException, IOException { |
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String clientId = "sub"; |
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String clientVersion = "0.1"; |
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long timestamp = System.currentTimeMillis() / 1000L; |
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String authToken = calculateAuthenticationToken(registrationData.password, timestamp); |
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URI uri = new URI("https", |
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/* userInfo= */ null, "post.audioscrobbler.com", -1, |
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"/", |
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String.format("hs=true&p=1.2.1&c=%s&v=%s&u=%s&t=%s&a=%s", |
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clientId, clientVersion, registrationData.username, |
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timestamp, authToken), |
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/* fragment= */ null); |
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String[] lines = executeGetRequest(uri); |
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if (lines[0].startsWith("BANNED")) { |
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LOG.warn("Failed to scrobble song '" + registrationData.title + "' at Last.fm. Client version is banned."); |
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return null; |
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} |
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if (lines[0].startsWith("BADAUTH")) { |
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LOG.warn("Failed to scrobble song '" + registrationData.title + "' at Last.fm. Wrong username or password."); |
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return null; |
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} |
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if (lines[0].startsWith("BADTIME")) { |
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LOG.warn("Failed to scrobble song '" + registrationData.title + "' at Last.fm. Bad timestamp, please check local clock."); |
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return null; |
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} |
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if (lines[0].startsWith("FAILED")) { |
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LOG.warn("Failed to scrobble song '" + registrationData.title + "' at Last.fm: " + lines[0]); |
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return null; |
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} |
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if (!lines[0].startsWith("OK")) { |
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LOG.warn("Failed to scrobble song '" + registrationData.title + "' at Last.fm. Unknown response: " + lines[0]); |
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return null; |
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} |
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return lines; |
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} |
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private String[] registerSubmission(RegistrationData registrationData, String sessionId, String url) throws UnsupportedEncodingException, ClientProtocolException, IOException { |
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Map<String, String> params = new HashMap<String, String>(); |
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params.put("s", sessionId); |
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params.put("a[0]", registrationData.artist); |
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params.put("t[0]", registrationData.title); |
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params.put("i[0]", String.valueOf(registrationData.time.getTime() / 1000L)); |
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params.put("o[0]", "P"); |
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params.put("r[0]", ""); |
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params.put("l[0]", String.valueOf(registrationData.duration)); |
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params.put("b[0]", registrationData.album); |
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params.put("n[0]", ""); |
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params.put("m[0]", ""); |
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return executePostRequest(url, params); |
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} |
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private String[] registerNowPlaying(RegistrationData registrationData, String sessionId, String url) throws UnsupportedEncodingException, ClientProtocolException, IOException { |
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Map<String, String> params = new HashMap<String, String>(); |
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params.put("s", sessionId); |
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params.put("a", registrationData.artist); |
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params.put("t", registrationData.title); |
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params.put("b", registrationData.album); |
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params.put("l", String.valueOf(registrationData.duration)); |
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params.put("n", ""); |
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params.put("m", ""); |
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return executePostRequest(url, params); |
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} |
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private String calculateAuthenticationToken(String password, long timestamp) { |
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return DigestUtils.md5Hex(DigestUtils.md5Hex(password) + timestamp); |
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} |
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private String[] executeGetRequest(URI url) throws IOException, ClientProtocolException { |
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HttpGet method = new HttpGet(url); |
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method.setConfig(requestConfig); |
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return executeRequest(method); |
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} |
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private String[] executePostRequest(String url, Map<String, String> parameters) throws UnsupportedEncodingException, ClientProtocolException, IOException { |
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List<NameValuePair> params = new ArrayList<NameValuePair>(); |
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for (Map.Entry<String, String> entry : parameters.entrySet()) { |
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params.add(new BasicNameValuePair(entry.getKey(), entry.getValue())); |
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} |
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HttpPost request = new HttpPost(url); |
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request.setEntity(new UrlEncodedFormEntity(params, StringUtil.ENCODING_UTF8)); |
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request.setConfig(requestConfig); |
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return executeRequest(request); |
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} |
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private String[] executeRequest(HttpUriRequest request) throws ClientProtocolException, IOException { |
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try (CloseableHttpClient client = HttpClients.createDefault()) { |
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ResponseHandler<String> responseHandler = new BasicResponseHandler(); |
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String response = client.execute(request, responseHandler); |
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return response.split("\\r?\\n"); |
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} |
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} |
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private class RegistrationThread extends Thread { |
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private RegistrationThread() { |
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super("LastFMScrobbler Registration"); |
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} |
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@Override |
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public void run() { |
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while (true) { |
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RegistrationData registrationData = null; |
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try { |
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registrationData = queue.take(); |
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scrobble(registrationData); |
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} catch (IOException x) { |
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handleNetworkError(registrationData, x.toString()); |
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} catch (Exception x) { |
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LOG.warn("Error in Last.fm registration: " + x.toString()); |
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} |
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} |
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} |
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private void handleNetworkError(RegistrationData registrationData, String errorMessage) { |
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try { |
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queue.put(registrationData); |
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LOG.info("Last.fm registration for '" + registrationData.title + |
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"' encountered network error: " + errorMessage + ". Will try again later. In queue: " + queue.size()); |
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} catch (InterruptedException x) { |
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LOG.error("Failed to reschedule Last.fm registration for '" + registrationData.title + "': " + x.toString()); |
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} |
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try { |
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sleep(60L * 1000L); // Wait 60 seconds.
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} catch (InterruptedException x) { |
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LOG.error("Failed to sleep after Last.fm registration failure for '" + registrationData.title + "': " + x.toString()); |
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} |
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} |
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} |
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private static class RegistrationData { |
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private String username; |
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private String password; |
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private String artist; |
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private String album; |
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private String title; |
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private int duration; |
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private Date time; |
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public boolean submission; |
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} |
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} |
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