private static void startStream(List<String> terms) throws TwitterException {
if (twitter != null) {
twitter.cleanUp();
}
if (esClient != null) {
esClient.close();
esClient = null;
}
play.Configuration pconf = Play.application().configuration();
String elasticSearchCluster = pconf.getString("tweet.elasticsearch.cluster.name");
if (elasticSearchCluster != null) {
Logger.info("Configuring ElasticSearch...");
Settings settings =
ImmutableSettings.settingsBuilder().put("cluster.name", elasticSearchCluster).build();
esClient =
new TransportClient(settings)
.addTransportAddress(
new InetSocketTransportAddress(
pconf.getString("tweet.elasticsearch.transport.host"),
pconf.getInt("tweet.elasticsearch.transport.port")));
} else {
esClient = null;
}
twitter4j.conf.Configuration tconf = Application.getTwitterConfiguration();
TwitterStreamFactory tf = new TwitterStreamFactory(tconf);
twitter = tf.getInstance();
StatusListener l =
new TweetListener(
terms,
esClient,
pconf.getString("tweet.elasticsearch.index"),
pconf.getString("tweet.elasticsearch.type"));
twitter.addListener(l);
String[] tracks = new String[terms.size()];
StringBuffer termsString = new StringBuffer();
for (int i = 0; i < terms.size(); i++) {
tracks[i] = terms.get(i);
if (i != 0) termsString.append(",");
termsString.append(terms.get(i));
}
FilterQuery q = new FilterQuery().track(tracks);
twitter.filter(q);
Logger.info("Starting listening for tweets using terms " + termsString.toString() + "...");
}
// --------------------------------------------------------------------------
public void run() {
// Open source data files...
Asc_Reader slope = new Asc_Reader("slope-soil", "Inputs");
Asc_Reader depth = new Asc_Reader("depth", "Inputs");
Asc_Reader silt = new Asc_Reader("silt", "Inputs");
Asc_Reader cec = new Asc_Reader("cec", "Inputs");
// vars to hold each line as an array of strings
String[] slopeLine = null, depthLine = null, siltLine = null, cecLine = null;
int width = slope.getWidth();
int height = slope.getHeight();
// Output files...
PrintWriter cornOut = new HeaderWrite("corn_production", width, height, null).getWriter();
PrintWriter grassOut = new HeaderWrite("grass_production", width, height, null).getWriter();
for (int y = 0; y < height; y++) {
try {
slopeLine = slope.getSplitLine();
depthLine = depth.getSplitLine();
siltLine = silt.getSplitLine();
cecLine = cec.getSplitLine();
} catch (Exception e) {
Logger.error(e.toString());
}
StringBuffer cornBuffer = new StringBuffer();
StringBuffer grassBuffer = new StringBuffer();
for (int x = 0; x < width; x++) {
float cornYield =
3.08f
- 0.11f * Float.parseFloat(slopeLine[x])
+ 0.02f * Float.parseFloat(depthLine[x])
+ 0.10f * Float.parseFloat(siltLine[x])
+ 0.04f * Float.parseFloat(cecLine[x]);
cornYield *= 0.0001f * 900.0f;
cornBuffer.append(String.format("%.4f", cornYield));
if (x < width - 1) { // Need to append a space between data items?
cornBuffer.append(" ");
}
float grassYield =
2.20f
- 0.07f * Float.parseFloat(slopeLine[x])
+ 0.02f * Float.parseFloat(depthLine[x])
+ 0.07f * Float.parseFloat(siltLine[x])
+ 0.03f * Float.parseFloat(cecLine[x]);
grassYield *= 0.0001f * 900.0f;
grassBuffer.append(String.format("%.4f", grassYield));
if (x < width - 1) { // Need to append a space between data items?
grassBuffer.append(" ");
}
}
cornOut.println(cornBuffer.toString());
grassOut.println(grassBuffer.toString());
}
// output files closed...
cornOut.close();
grassOut.close();
// input files closed...
slope.close();
depth.close();
silt.close();
cec.close();
};