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package com.yahoo.container.handler;
import com.google.inject.Inject;
import com.yahoo.container.jdisc.HttpRequest;
import com.yahoo.container.jdisc.HttpResponse;
import com.yahoo.container.jdisc.ThreadedHttpRequestHandler;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.concurrent.Executor;
public class LogHandler extends ThreadedHttpRequestHandler {
private static final String LOG_DIRECTORY = "/home/y/logs/vespa/logarchive/";
private final LogReader logReader;
@Inject
public LogHandler(Executor executor) {
this(executor, new LogReader());
}
protected LogHandler(Executor executor, LogReader logReader) {
super(executor);
this.logReader = logReader;
}
@Override
public HttpResponse handle(HttpRequest request) {
JSONObject responseJSON = new JSONObject();
HashMap<String, String> apiParams = getParameters(request);
long earliestLogThreshold = getEarliestThreshold(apiParams);
long latestLogThreshold = getLatestThreshold(apiParams);
try {
JSONObject logJson = logReader.readLogs(LOG_DIRECTORY, earliestLogThreshold, latestLogThreshold);
responseJSON.put("logs", logJson);
} catch (IOException | JSONException e) {
return new HttpResponse(404) {
@Override
public void render(OutputStream outputStream) {}
};
}
return new HttpResponse(200) {
@Override
public void render(OutputStream outputStream) throws IOException {
OutputStreamWriter outputStreamWriter = new OutputStreamWriter(outputStream);
outputStreamWriter.write(responseJSON.toString());
outputStreamWriter.close();
}
};
}
private HashMap<String, String> getParameters(HttpRequest request) {
String query = request.getUri().getQuery();
HashMap<String, String> keyValPair = new HashMap<>();
Arrays.stream(query.split("&")).forEach(pair -> {
String[] splitPair = pair.split("=");
keyValPair.put(splitPair[0], splitPair[1]);
});
return keyValPair;
}
private long getEarliestThreshold(HashMap<String, String> map) {
if (map.containsKey("from")) {
return Long.valueOf(map.get("from"));
}
return Long.MIN_VALUE;
}
private long getLatestThreshold(HashMap<String, String> map) {
if (map.containsKey("to")) {
return Long.valueOf(map.get("to"));
}
return Long.MAX_VALUE;
}
}
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