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Test remote logger / log forwarding [do not merge] #124

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58 changes: 58 additions & 0 deletions examples/gcp-web-example/src/test/java/org/entur/example/web/WebLoggingFormatTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -2,10 +2,22 @@

import static org.assertj.core.api.Assertions.assertThat;

import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.Logger;
import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.spi.ILoggingEvent;
import ch.qos.logback.classic.spi.LoggingEvent;
import ch.qos.logback.core.Appender;
import ch.qos.logback.core.UnsynchronizedAppenderBase;
import no.entur.logging.cloud.appender.AsyncAppenderBase;
import no.entur.logging.cloud.appender.scope.LoggingScopeAsyncAppender;
import no.entur.logging.cloud.logback.logstash.test.CompositeConsoleOutputControl;
import no.entur.logging.cloud.logback.logstash.test.CompositeConsoleOutputControlClosable;
import org.entur.example.web.rest.MyEntity;
import org.junit.jupiter.api.Test;
import org.slf4j.ILoggerFactory;
import org.slf4j.LoggerFactory;
import org.slf4j.Marker;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
Expand All @@ -14,6 +26,9 @@
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;

import java.time.Instant;
import java.util.Iterator;

@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
public class WebLoggingFormatTest {

Expand Down Expand Up @@ -57,4 +72,47 @@ public void useMachineReadableJsonEncoder() throws InterruptedException {
}
}

@Test
public void logFromRemoteExample() throws InterruptedException {
// one-time init
UnsynchronizedAppenderBase appender = getAppender();
LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory();

// per log statement
// get inputs from remote call
Level level = Level.INFO;
Instant instant = Instant.EPOCH;
String message = "Test me";
Logger logger = loggerContext.getLogger("my.remote.package");

// create + write log event
LoggingEvent logEvent = buildLoggingEvent(logger, instant, "", null, level, message, null, null);
appender.doAppend(logEvent);
}

private LoggingEvent buildLoggingEvent(Logger logger, Instant time, final Marker marker, final Level level, final String msg) {
return buildLoggingEvent(logger, time, "", marker, level, msg, null, null);
}

private LoggingEvent buildLoggingEvent(Logger logger, Instant time, final String localFQCN, final Marker marker, final Level level,
final String msg, final Object[] params, final Throwable t) {
LoggingEvent le = new LoggingEvent(localFQCN, logger, level, msg, t, params);
le.addMarker(marker);
le.setInstant(time);
return le;
}

public static UnsynchronizedAppenderBase getAppender() {
Logger logger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
Iterator<Appender<ILoggingEvent>> appenderIterator = logger.iteratorForAppenders();
while (appenderIterator.hasNext()) {
Appender<ILoggingEvent> appender = appenderIterator.next();
if (appender instanceof no.entur.logging.cloud.appender.AsyncAppenderBase a) {
return a;
}
}
throw new IllegalStateException("Expected async appender");
}


}