Update to version 4.x and update to SLF4J 2.x and Logback 1.4

README.md

@@ -17,6 +17,8 @@ Include in your `pom.xml`:
 
 ## Features
 
+* Version [3.x](https://github.com/kokuwaio/micronaut-logging/tree/3.x) is based on SLF4J 1.7 & Logback 1.2
+* Version [4.x](https://github.com/kokuwaio/micronaut-logging/tree/main) is based on SLF4J 2.0 & Logback 1.4
 * [set log level based on MDC values](docs/features/logback_mdc_level.md)
 * [add default xml](docs/features/logback_default.md)
 * [preconfigured appender for different environments](docs/features/logback_appender.md)
@@ -33,5 +35,3 @@ Include in your `pom.xml`:
 
 * configure mdc on refresh event
 * read **serviceName** and **serviceVersion** from yaml
-* support auto select appender with custom `logback.xml`
-* add maven site with jacoco / dependency updates for snapshot build

docs/features/logback_appender.md

@@ -2,7 +2,7 @@
 
 ## Available Appender
 
-* console with jansi for developers
+* console for developers
 * gcp logging format (with support for error reporting)
 * json
 
@@ -12,5 +12,3 @@
 2. if GCP is detected gcp appender will be used
 3. if Kubernetes is detected json appender will be used
 4. console appender else
-
-*IMPORTENT*: only works without custom `logback.xml`

docs/features/logback_default.md

@@ -4,14 +4,12 @@ If no `logback.xml` by user is provided a default [logback.xml](../../src/main/r
 
 ```xml
 <?xml version="1.0" encoding="UTF-8"?>
-<configuration debug="true" scan="false">
+<configuration debug="false" scan="false">
-
- <include resource="io/kokuwa/logback/base.xml" />
 
  <logger name="io.micronaut.logging.PropertiesLoggingLevelsConfigurer" levels="WARN" />
 
  <root level="INFO">
-  <appender-ref ref="${LOGBACK_APPENDER:-CONSOLE}" />
+  <autoAppender />
  </root>
 
 </configuration>

pom.xml

@@ -4,7 +4,7 @@
 
 	<groupId>io.kokuwa.micronaut</groupId>
 	<artifactId>micronaut-logging</artifactId>
-	<version>3.0.6-SNAPSHOT</version>
+	<version>4.0.0-SNAPSHOT</version>
 
 	<name>Logging Support for Micronaut</name>
 	<description>Enhanced logging using MDC or request header.</description>
@@ -105,9 +105,10 @@
 
 		<!-- dependencies -->
 
-		<version.ch.qos.logback>1.2.11</version.ch.qos.logback>
+		<version.ch.qos.logback>1.4.0</version.ch.qos.logback>
 		<version.ch.qos.logback.contrib>0.1.5</version.ch.qos.logback.contrib>
 		<version.io.micronaut>3.6.1</version.io.micronaut>
+		<version.org.slf4j.api>2.0.0</version.org.slf4j.api>
 
 	</properties>
 
@@ -123,6 +124,13 @@
 				<scope>import</scope>
 			</dependency>
 
+			<!-- slf4j -->
+			<dependency>
+				<groupId>org.slf4j</groupId>
+				<artifactId>slf4j-api</artifactId>
+				<version>${version.org.slf4j.api}</version>
+			</dependency>
+
 			<!-- logback -->
 			<dependency>
 				<groupId>ch.qos.logback</groupId>
@@ -193,7 +201,6 @@
 		<dependency>
 			<groupId>ch.qos.logback.contrib</groupId>
 			<artifactId>logback-jackson</artifactId>
-			<scope>runtime</scope>
 		</dependency>
 
 	</dependencies>

src/main/java/io/kokuwa/micronaut/logging/configurator/DefaultConfigurator.java

@@ -14,12 +14,12 @@ import ch.qos.logback.core.spi.ContextAwareBase;
 public class DefaultConfigurator extends ContextAwareBase implements Configurator {
 
 	@Override
-	public void configure(LoggerContext loggerContext) {
+	public ExecutionStatus configure(LoggerContext loggerContext) {
 
 		var base = DefaultConfigurator.class.getResource("/io/kokuwa/logback/logback-default.xml");
 		if (base == null) {
 			addError("Failed to find logback.xml from io.kokuwa:micronaut-logging");
-			return;
+			return ExecutionStatus.NEUTRAL;
 		}
 
 		try {
@@ -29,8 +29,10 @@ public class DefaultConfigurator extends ContextAwareBase implements Configurato
 			configurator.doConfigure(base);
 		} catch (JoranException e) {
 			addError("Failed to load logback.xml from io.kokuwa:micronaut-logging", e);
+			return ExecutionStatus.NEUTRAL;
 		}
 
 		loggerContext.getLogger("io.micronaut.logging.PropertiesLoggingLevelsConfigurer").setLevel(Level.WARN);
+		return ExecutionStatus.DO_NOT_INVOKE_NEXT_IF_ANY;
 	}
 }

src/main/java/io/kokuwa/micronaut/logging/configurator/MicronautJoranConfigurator.java

@@ -12,8 +12,8 @@ import ch.qos.logback.core.joran.spi.RuleStore;
 public class MicronautJoranConfigurator extends JoranConfigurator {
 
 	@Override
-	public void addInstanceRules(RuleStore rs) {
+	public void addElementSelectorAndActionAssociations(RuleStore rs) {
-		super.addInstanceRules(rs);
+		super.addElementSelectorAndActionAssociations(rs);
-		rs.addRule(new ElementSelector("configuration/root/autoAppender"), new RootAutoSelectAppenderAction());
+		rs.addRule(new ElementSelector("configuration/root/autoAppender"), () -> new RootAutoSelectAppenderAction());
 	}
 }

src/main/java/io/kokuwa/micronaut/logging/configurator/RootAutoSelectAppenderAction.java

@@ -1,16 +1,21 @@
 package io.kokuwa.micronaut.logging.configurator;
 
-import java.util.Map;
+import java.util.Optional;
 
 import org.xml.sax.Attributes;
 
 import ch.qos.logback.classic.Logger;
 import ch.qos.logback.classic.LoggerContext;
+import ch.qos.logback.classic.PatternLayout;
 import ch.qos.logback.classic.spi.ILoggingEvent;
-import ch.qos.logback.core.Appender;
+import ch.qos.logback.contrib.jackson.JacksonJsonFormatter;
+import ch.qos.logback.contrib.json.classic.JsonLayout;
+import ch.qos.logback.core.ConsoleAppender;
+import ch.qos.logback.core.Layout;
+import ch.qos.logback.core.encoder.LayoutWrappingEncoder;
 import ch.qos.logback.core.joran.action.Action;
-import ch.qos.logback.core.joran.action.ActionConst;
+import ch.qos.logback.core.joran.spi.SaxEventInterpretationContext;
-import ch.qos.logback.core.joran.spi.InterpretationContext;
+import io.kokuwa.micronaut.logging.layout.GcpJsonLayout;
 import io.micronaut.core.util.StringUtils;
 
 /**
@@ -27,9 +32,16 @@ public class RootAutoSelectAppenderAction extends Action {
 	private static final String APPENDER_JSON = "JSON";
 	private static final String APPENDER_GCP = "GCP";
 	private static final String LOGBACK_APPENDER = "LOGBACK_APPENDER";
+	private static final String LOGBACK_PATTERN = "LOGBACK_PATTERN";
+	private static final String LOGBACK_PATTERN_DEFAULT = "%cyan(%d{HH:mm:ss.SSS})"
+			+ " %gray(%-6.6thread)"
+			+ " %highlight(%-5level)"
+			+ " %magenta(%32logger{32})"
+			+ " %mdc"
+			+ " %msg%n}";
 
 	@Override
-	public void begin(InterpretationContext ic, String name, Attributes attributes) {
+	public void begin(SaxEventInterpretationContext ic, String name, Attributes attributes) {
 
 		var rootLogger = LoggerContext.class.cast(context).getLogger(org.slf4j.Logger.ROOT_LOGGER_NAME);
 		var rootLoggerAppenders = rootLogger.iteratorForAppenders();
@@ -38,36 +50,95 @@ public class RootAutoSelectAppenderAction extends Action {
 			return;
 		}
 
-		var envAppender = System.getenv(LOGBACK_APPENDER);
+		var envAppender = env(LOGBACK_APPENDER, null);
-		if (envAppender != null && setAppender(ic, rootLogger, envAppender)) {
+		if (envAppender != null) {
+			setAppender(rootLogger, envAppender);
 			return;
 		}
 
-		if (IS_KUBERNETES && setAppender(ic, rootLogger, APPENDER_JSON)) {
+		if (IS_KUBERNETES) {
+			setAppender(rootLogger, APPENDER_JSON);
 			return;
 		}
-		if (IS_GCP && setAppender(ic, rootLogger, APPENDER_GCP)) {
+		if (IS_GCP) {
+			setAppender(rootLogger, APPENDER_GCP);
 			return;
 		}
-		setAppender(ic, rootLogger, APPENDER_CONSOLE);
+		setAppender(rootLogger, APPENDER_CONSOLE);
 	}
 
 	@Override
-	public void end(InterpretationContext ic, String name) {}
+	public void end(SaxEventInterpretationContext ic, String name) {}
-
-	private boolean setAppender(InterpretationContext ic, Logger rootLogger, String appenderName) {
-
-		@SuppressWarnings("unchecked")
-		var appenderBag = (Map<String, Appender<ILoggingEvent>>) ic.getObjectMap().get(ActionConst.APPENDER_BAG);
-		var appender = appenderBag.get(appenderName);
-		if (appender == null) {
-			addError("Could not find an appender named [" + appenderName
-					+ "]. Did you define it below instead of above in the configuration file?");
-			return false;
-		}
 
+	private void setAppender(Logger rootLogger, String appenderName) {
 		addInfo("Use appender: " + appenderName);
+
+		Layout<ILoggingEvent> layout;
+		switch (appenderName) {
+			case APPENDER_JSON:
+				layout = json();
+				break;
+			case APPENDER_GCP:
+				layout = gcp();
+				break;
+			case APPENDER_CONSOLE:
+				layout = console();
+				break;
+			default:
+				addError("Appender " + appenderName + " not found. Using console ...");
+				layout = console();
+		}
+		layout.start();
+
+		var encoder = new LayoutWrappingEncoder<ILoggingEvent>();
+		encoder.setContext(context);
+		encoder.setLayout(layout);
+		encoder.start();
+
+		var appender = new ConsoleAppender<ILoggingEvent>();
+		appender.setContext(context);
+		appender.setName(appenderName);
+		appender.setEncoder(encoder);
+		appender.start();
+
 		rootLogger.addAppender(appender);
-		return true;
+	}
+
+	private Layout<ILoggingEvent> console() {
+		var layout = new PatternLayout();
+		layout.setContext(context);
+		layout.setPattern(env(LOGBACK_PATTERN, LOGBACK_PATTERN_DEFAULT));
+		return layout;
+	}
+
+	private Layout<ILoggingEvent> json() {
+		var layout = new GcpJsonLayout();
+		layout.setContext(context);
+		layout.setJsonFormatter(new JacksonJsonFormatter());
+		layout.setAppendLineSeparator(true);
+		layout.setIncludeContextName(false);
+		layout.setServiceName(env("SERVICE_NAME", null));
+		layout.setServiceVersion(env("SERVICE_VERSION", null));
+		return layout;
+	}
+
+	private Layout<ILoggingEvent> gcp() {
+		var layout = new JsonLayout();
+		layout.setContext(context);
+		layout.setJsonFormatter(new JacksonJsonFormatter());
+		layout.setAppendLineSeparator(true);
+		layout.setIncludeContextName(false);
+		return layout;
+	}
+
+	private String env(String name, String defaultValue) {
+		var envValue = Optional.ofNullable(System.getenv(name)).map(String::trim).filter(String::isEmpty);
+		var finalValue = envValue.orElse(defaultValue);
+		if (envValue.isPresent()) {
+			addInfo("Use provided config: " + name + "=" + finalValue);
+		} else {
+			addInfo("Use default config: " + name + "=" + finalValue);
+		}
+		return finalValue;
 	}
 }

src/main/resources/io/kokuwa/logback/appender-console.xml

@@ -2,8 +2,8 @@
 <included>
 
 	<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
-		<withJansi>${CONSOLE_LOG_JANSI:-true}</withJansi>
+		<withJansi>${CONSOLE_LOG_JANSI:-false}</withJansi>
-		<encoder>
+		<encoder class="ch.qos.logback.core.encoder.LayoutWrappingEncoder">
 			<pattern>${CONSOLE_LOG_PATTERN:-%cyan(%d{HH:mm:ss.SSS}) %gray(%-6.6thread) %highlight(%-5level) %magenta(%32logger{32}) %mdc %msg%n}</pattern>
 			<charset>${CONSOLE_LOG_CHARSET:-default}</charset>
 		</encoder>

src/main/resources/io/kokuwa/logback/base.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<included>
-
-	<include resource="io/kokuwa/logback/appender-console.xml" />
-	<include resource="io/kokuwa/logback/appender-json.xml" />
-	<include resource="io/kokuwa/logback/appender-gcp.xml" />
-
-</included>

src/main/resources/io/kokuwa/logback/logback-default.xml

@@ -1,8 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <configuration debug="false" scan="false">
 
-	<include resource="io/kokuwa/logback/base.xml" />
-
 	<logger name="io.micronaut.logging.PropertiesLoggingLevelsConfigurer" levels="WARN" />
 
 	<root level="INFO">

src/main/resources/io/kokuwa/logback/logback-example.xml

@@ -1,7 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <configuration debug="true" scan="false">
 
-	<include resource="io/kokuwa/logback/base.xml" />
+	<include resource="io/kokuwa/logback/appender-console.xml" />
+	<include resource="io/kokuwa/logback/appender-json.xml" />
+	<include resource="io/kokuwa/logback/appender-gcp.xml" />
 
 	<logger name="io.micronaut.logging.PropertiesLoggingLevelsConfigurer" levels="WARN" />