biz.paluch.logging.gelf.intern.sender.GelfHTTPSender Maven / Gradle / Ivy
package biz.paluch.logging.gelf.intern.sender;
import java.io.IOException;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import biz.paluch.logging.gelf.intern.ErrorReporter;
import biz.paluch.logging.gelf.intern.GelfMessage;
import biz.paluch.logging.gelf.intern.GelfSender;
/**
* HTTP-based Gelf sender. This sender uses Java's HTTP client to {@code POST} JSON Gelf messages to an endpoint.
*
* @author Aleksandar Stojadinovic
* @author Patrick Brueckner
* @since 1.9
*/
public class GelfHTTPSender implements GelfSender {
private static final int HTTP_SUCCESSFUL_LOWER_BOUND = 200;
private static final int HTTP_SUCCESSFUL_UPPER_BOUND = 299;
private final int connectTimeoutMs;
private final int readTimeoutMs;
private final ErrorReporter errorReporter;
private final URL url;
/**
* Create a new {@link GelfHTTPSender} given {@code url}, {@code connectTimeoutMs}, {@code readTimeoutMs} and
* {@link ErrorReporter}.
*
* @param url target URL
* @param connectTimeoutMs connection timeout in milliseconds.
* @param readTimeoutMs read timeout in milliseconds.
* @param errorReporter the error reporter.
*/
public GelfHTTPSender(URL url, int connectTimeoutMs, int readTimeoutMs, ErrorReporter errorReporter) {
this.connectTimeoutMs = connectTimeoutMs;
this.readTimeoutMs = readTimeoutMs;
this.errorReporter = errorReporter;
this.url = url;
}
@Override
public boolean sendMessage(GelfMessage message) {
HttpURLConnection connection = null;
try {
connection = (HttpURLConnection) url.openConnection();
connection.setConnectTimeout(connectTimeoutMs);
connection.setReadTimeout(readTimeoutMs);
connection.setDoOutput(true);
connection.setRequestMethod("POST");
connection.addRequestProperty("Content-type", "application/json");
OutputStream outputStream = connection.getOutputStream();
outputStream.write(message.toJson().getBytes(StandardCharsets.UTF_8));
outputStream.close();
int responseCode = connection.getResponseCode();
if (responseCode >= HTTP_SUCCESSFUL_LOWER_BOUND && responseCode <= HTTP_SUCCESSFUL_UPPER_BOUND) {
return true;
}
errorReporter.reportError("Server responded with unexpected status code: " + responseCode, null);
} catch (IOException e) {
errorReporter.reportError("Cannot send data to " + url, e);
} finally {
// disconnecting HttpURLConnection here to avoid underlying premature underlying Socket being closed.
if (connection != null) {
connection.disconnect();
}
}
return false;
}
@Override
public void close() {
// nothing to do
}
}