preparing springboot

springboot/IgnoringActuatorLoggingFilter.java

@@ -0,0 +1,38 @@
+package me.bvn13.logging;
+
+import ch.qos.logback.classic.spi.ILoggingEvent;
+import ch.qos.logback.core.filter.Filter;
+import ch.qos.logback.core.spi.FilterReply;
+
+import java.util.HashSet;
+import java.util.Set;
+import java.util.regex.Pattern;
+
+public class IgnoringActuatorLoggingFilter extends Filter<ILoggingEvent> {
+    private static final Pattern ACTUATOR =
+            Pattern.compile("GET \"/(health|prometheus)\", parameters=\\{}");
+    private static final Pattern COMPLETED =
+            Pattern.compile("Completed 200 OK");
+
+    private final Set<String> activeThreads = new HashSet<>();
+
+    @Override
+    public FilterReply decide(ILoggingEvent loggingEvent) {
+        if (isHealthOrPrometheus(loggingEvent.getMessage())) {
+            activeThreads.add(loggingEvent.getThreadName());
+            return FilterReply.DENY;
+        } else if (isCompleted200Ok(loggingEvent.getMessage()) && activeThreads.remove(loggingEvent.getThreadName())) {
+            return FilterReply.DENY;
+        } else {
+            return FilterReply.ACCEPT;
+        }
+    }
+
+    private boolean isHealthOrPrometheus(String message) {
+        return ACTUATOR.matcher(message).matches();
+    }
+
+    private boolean isCompleted200Ok(String message) {
+        return COMPLETED.matcher(message).matches();
+    }
+}

springboot/logback-prod.xml

@@ -0,0 +1,11 @@
+<configuration>
+    <appender name="JSON_STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <filter class="me.bvn13.logging.IgnoringActuatorLoggingFilter"/>
+        <encoder class="net.logstash.logback.encoder.LogstashEncoder"/>
+    </appender>
+
+    <root level="info">
+        <!--        <appender-ref ref="STDOUT" />-->
+        <appender-ref ref="JSON_STDOUT"/>
+    </root>
+</configuration>