@Test
public void patternIncludesAppNameAndPid() throws Exception {
final AsyncAppender wrapper =
(AsyncAppender)
new SyslogAppenderFactory()
.build(
new LoggerContext(),
"MyApplication",
new DropwizardLayoutFactory(),
new NullLevelFilterFactory<>(),
new AsyncLoggingEventAppenderFactory());
assertThat(((SyslogAppender) wrapper.getAppender("syslog-appender")).getSuffixPattern())
.matches("^MyApplication\\[\\d+\\].+");
}
@Test
public void stackTracePatternCanBeSet() throws Exception {
final SyslogAppenderFactory syslogAppenderFactory = new SyslogAppenderFactory();
syslogAppenderFactory.setStackTracePrefix("--->");
final AsyncAppender wrapper =
(AsyncAppender)
syslogAppenderFactory.build(
new LoggerContext(),
"MyApplication",
new DropwizardLayoutFactory(),
new NullLevelFilterFactory<>(),
new AsyncLoggingEventAppenderFactory());
assertThat(((SyslogAppender) wrapper.getAppender("syslog-appender")).getStackTracePattern())
.isEqualTo("--->");
}
public void addLogstashAppender(LoggerContext context) {
log.info("Initializing Logstash logging");
LogstashSocketAppender logstashAppender = new LogstashSocketAppender();
logstashAppender.setName("LOGSTASH");
logstashAppender.setContext(context);
String customFields = "{\"app_name\":\"" + appName + "\",\"app_port\":\"" + serverPort + "\"}";
// Set the Logstash appender config from JHipster properties
logstashAppender.setSyslogHost(jHipsterProperties.getLogging().getLogstash().getHost());
logstashAppender.setPort(jHipsterProperties.getLogging().getLogstash().getPort());
logstashAppender.setCustomFields(customFields);
// Limit the maximum length of the forwarded stacktrace so that it won't exceed the 8KB UDP
// limit of logstash
ShortenedThrowableConverter throwableConverter = new ShortenedThrowableConverter();
throwableConverter.setMaxLength(7500);
throwableConverter.setRootCauseFirst(true);
logstashAppender.setThrowableConverter(throwableConverter);
logstashAppender.start();
// Wrap the appender in an Async appender for performance
AsyncAppender asyncLogstashAppender = new AsyncAppender();
asyncLogstashAppender.setContext(context);
asyncLogstashAppender.setName("ASYNC_LOGSTASH");
asyncLogstashAppender.setQueueSize(
jHipsterProperties.getLogging().getLogstash().getQueueSize());
asyncLogstashAppender.addAppender(logstashAppender);
asyncLogstashAppender.start();
context.getLogger("ROOT").addAppender(asyncLogstashAppender);
}