private void checkTimeout() {
Date now = new Date();
if (now.after(nextTimeout)) {
// prevent: double tick, but no stream -> 2 files..
while (nextTimeout.before(now)) {
nextTimeout = new Date((nextTimeout.getTime() + interval));
}
// timeout -> change file
file =
new File(
path
+ "/"
+ TimeStamp.createLong(new Date(nextTimeout.getTime() - interval))
+ "_"
+ this.hashtag
+ ".json");
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* Constructs a Stream Writer that writes a json file to disk
*
* @param hashtag {@link String} for filename
* @param interval in ms - afer this time a new file with timestamp will be created
*/
public HashtagStreamWriter(String hashtag) {
this.interval = Config.crawler_newFileInterval;
// save date of first call and increment it later (after timeout)
nextTimeout = new Date(new Date().getTime() + interval);
// normalize hashtag
this.hashtag = hashtag.replaceAll("#", "");
// set file location
this.path = Config.get_location_tweets() + this.hashtag;
// make folder for hashtag (if not already existing)
try {
File dir = new File(path);
dir.mkdirs();
} catch (Exception e) {
System.out.println(e.getMessage());
}
// create File (hashtag_timestamp.json)
file = new File(path + "/" + TimeStamp.getLong() + "_" + this.hashtag + ".json");
try {
file.createNewFile();
System.out.println("new Stream to File" + file.getAbsolutePath());
} catch (IOException e) {
System.out.println(e.getMessage());
}
}