package com.github.hakko.musiccabinet.service.lastfm;
import static com.github.hakko.musiccabinet.domain.model.library.WebserviceInvocation.Calltype.ARTIST_GET_SIMILAR;
import java.util.Set;
import com.github.hakko.musiccabinet.dao.ArtistRelationDao;
import com.github.hakko.musiccabinet.domain.model.music.Artist;
import com.github.hakko.musiccabinet.exception.ApplicationException;
import com.github.hakko.musiccabinet.log.Logger;
import com.github.hakko.musiccabinet.parser.lastfm.ArtistSimilarityParser;
import com.github.hakko.musiccabinet.parser.lastfm.ArtistSimilarityParserImpl;
import com.github.hakko.musiccabinet.util.StringUtil;
import com.github.hakko.musiccabinet.ws.lastfm.ArtistSimilarityClient;
import com.github.hakko.musiccabinet.ws.lastfm.WSResponse;
/*
* Provides services related to creating relations between artists.
*
* Using this data, we expose recommendations through {@link ArtistRecommendationService}
*/
public class ArtistRelationService extends SearchIndexUpdateService {
protected ArtistSimilarityClient artistSimilarityClient;
protected ArtistRelationDao artistRelationDao;
protected WebserviceHistoryService webserviceHistoryService;
private static final Logger LOG = Logger.getLogger(ArtistRelationService.class);
@Override
protected void updateSearchIndex() throws ApplicationException {
Set<String> artistNames = webserviceHistoryService.
getArtistNamesScheduledForUpdate(ARTIST_GET_SIMILAR);
setTotalOperations(artistNames.size());
for (String artistName : artistNames) {
try {
WSResponse wsResponse = artistSimilarityClient.getArtistSimilarity(new Artist(artistName));
if (wsResponse.wasCallAllowed() && wsResponse.wasCallSuccessful()) {
StringUtil stringUtil = new StringUtil(wsResponse.getResponseBody());
ArtistSimilarityParser asParser =
new ArtistSimilarityParserImpl(stringUtil.getInputStream());
artistRelationDao.createArtistRelations(asParser.getArtist(),
asParser.getArtistRelations());
}
} catch (ApplicationException e) {
LOG.warn("Fetching artist relations for " + artistName + " failed.", e);
}
addFinishedOperation();
}
}
@Override
public String getUpdateDescription() {
return "artist relations";
}
// Spring setters
public void setArtistSimilarityClient(ArtistSimilarityClient artistSimilarityClient) {
this.artistSimilarityClient = artistSimilarityClient;
}
public void setArtistRelationDao(ArtistRelationDao artistRelationDao) {
this.artistRelationDao = artistRelationDao;
}
public void setWebserviceHistoryService(
WebserviceHistoryService webserviceHistoryService) {
this.webserviceHistoryService = webserviceHistoryService;
}
}