feat: Support for reading logback config from local or remote file

.circleci/config.yml

@@ -36,7 +36,7 @@ pr_filter: &pr_filter
 executors:
   jdk-executor:
     docker:
-      - image: devatherock/graalvm:0.2.0
+      - image: devatherock/graalvm:ol8-java11-22.1.0-2
         auth:
           username: $DOCKER_USERNAME
           password: $DOCKER_PASSWORD

CHANGELOG.md

@@ -1,6 +1,9 @@
 # Changelog
 
 ## [Unreleased]
+### Added
+- Support for reading logback config from local or remote file
+
 ### Changed
 - Used integration test config from `gradle-includes`
 

Dockerfile

@@ -1,9 +1,9 @@
-FROM devatherock/graalvm:ol7-java11-20.3.4-1 as graalvm
+FROM ghcr.io/graalvm/native-image:ol8-java11-22.1.0 as graalvm
 
 COPY . /home/app/micronaut-graal-app
 WORKDIR /home/app/micronaut-graal-app
 
-RUN native-image --no-server -cp build/libs/*-all.jar
+RUN native-image -cp build/libs/*-all.jar
 
 
 

README.md

@@ -15,7 +15,7 @@ docker run --rm \
   -p 8080:8080 \
   -e ARTIFACTORY_URL=https://some/url \
   -e ARTIFACTORY_API_KEY=xyz \
-  devatherock/artifactory-badge:0.5.0
+  devatherock/artifactory-badge:1.0.0
 ```
 
 ### Configurable properties

build.gradle

@@ -101,6 +101,14 @@ ext.jacoco = [
     exclusions: [
         'io/github/devatherock/Application.class',
         'io/github/devatherock/test/ArtifactoryController.class'
+    ],
+    coverageThresholds: [
+        'io.github.devatherock.logback.LogbackConfigInitializer': [
+            'BRANCH': 0.75,
+            'COMPLEXITY': 0.62,
+            'INSTRUCTION': 0.89,
+            'LINE': 0.88
+        ]
     ]
 ]
 apply from: 'https://raw.githubusercontent.com/devatherock/gradle-includes/master/integration.gradle'

docker-compose.yml

@@ -8,5 +8,6 @@ services:
       - ARTIFACTORY_URL=http://localhost:8081
       - ARTIFACTORY_API_KEY=dummyKey
       - ARTIFACTORY_BADGE_SHIELDS_IO_URL=http://localhost:8081
+      - LOGBACK_CONFIGURATION_FILE=https://raw.githubusercontent.com/devatherock/artifactory-badge/master/src/main/resources/logback-json.xml
     ports:
       - "8080:8080"

src/main/java/io/github/devatherock/Application.java

@@ -1,41 +1,21 @@
 package io.github.devatherock;
 
-import org.slf4j.LoggerFactory;
+import java.io.IOException;
+
+import io.github.devatherock.logback.LogbackConfigInitializer;
 
-import ch.qos.logback.classic.LoggerContext;
-import ch.qos.logback.classic.joran.JoranConfigurator;
-import ch.qos.logback.classic.util.ContextInitializer;
-import ch.qos.logback.core.joran.spi.JoranException;
-import ch.qos.logback.core.util.StatusPrinter;
 import io.micronaut.runtime.Micronaut;
 import io.swagger.v3.oas.annotations.OpenAPIDefinition;
 import io.swagger.v3.oas.annotations.info.Info;
 import io.swagger.v3.oas.annotations.servers.Server;
 
-@OpenAPIDefinition(info = @Info(title = "artifactory-badge", version = "1.0.0"), servers = {
+@OpenAPIDefinition(info = @Info(title = "artifactory-badge", version = "1.1.0"), servers = {
         @Server(url = "http://localhost:8080", description = "The server where the application is hosted. Defaulted to localhost")
 })
 public class Application {
-    private static final String ENV_LOGBACK_CONFIG = "LOGBACK_CONFIGURATION_FILE";
-
-    public static void main(String[] args) {
-        if (System.getProperty(ContextInitializer.CONFIG_FILE_PROPERTY) == null &&
-                System.getenv(ENV_LOGBACK_CONFIG) != null) {
-            LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();
-
-            try {
-                JoranConfigurator configurator = new JoranConfigurator();
-                configurator.setContext(context);
-                context.reset();
-                configurator.doConfigure(
-                        Application.class.getClassLoader().getResourceAsStream(System.getenv(
-                                ENV_LOGBACK_CONFIG)));
-            } catch (JoranException je) {
-                // StatusPrinter will handle this
-            }
-            StatusPrinter.printInCaseOfErrorsOrWarnings(context);
-        }
 
+    public static void main(String[] args) throws IOException {
+        LogbackConfigInitializer.initializeConfig();
         Micronaut.run(Application.class);
     }
 }

src/main/java/io/github/devatherock/logback/LogbackConfigInitializer.java

@@ -0,0 +1,89 @@
+package io.github.devatherock.logback;
+
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+
+import org.slf4j.LoggerFactory;
+
+import io.github.devatherock.Application;
+
+import ch.qos.logback.classic.LoggerContext;
+import ch.qos.logback.classic.joran.JoranConfigurator;
+import ch.qos.logback.classic.util.ContextInitializer;
+import ch.qos.logback.core.joran.spi.JoranException;
+import ch.qos.logback.core.util.StatusPrinter;
+
+/**
+ * Initializes logging config using an environment variable. Needed for native
+ * images
+ * 
+ * @author devaprasadh
+ *
+ */
+public class LogbackConfigInitializer {
+    private static final String ENV_LOGBACK_CONFIG = "LOGBACK_CONFIGURATION_FILE";
+
+    /**
+     * Initializes logging config using an environment variable
+     * 
+     * @throws IOException
+     */
+    public static void initializeConfig() throws IOException {
+        if (System.getProperty(ContextInitializer.CONFIG_FILE_PROPERTY) == null &&
+                System.getenv(ENV_LOGBACK_CONFIG) != null) {
+            initializeConfig(System.getenv(ENV_LOGBACK_CONFIG));
+        }
+    }
+
+    /**
+     * Initializes logging config using the specified config file
+     * 
+     * @throws IOException
+     */
+    private static void initializeConfig(String configFile) throws IOException {
+        InputStream config = readConfig(configFile);
+
+        if (null != config) {
+            LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();
+
+            try {
+                JoranConfigurator configurator = new JoranConfigurator();
+                configurator.setContext(context);
+                context.reset();
+                configurator.doConfigure(config);
+            } catch (JoranException exception) {
+                // StatusPrinter will handle this
+            } finally {
+                config.close();
+            }
+            StatusPrinter.printInCaseOfErrorsOrWarnings(context);
+        }
+    }
+
+    /**
+     * Read the config file contents as an {@link InputStream}
+     * 
+     * @param configFile
+     * @return an inputstream
+     */
+    private static InputStream readConfig(String configFile) {
+        InputStream stream = Application.class.getClassLoader().getResourceAsStream(configFile); // From classpath
+
+        if (null == stream) {
+            try {
+                stream = new FileInputStream(configFile); // From local file
+            } catch (FileNotFoundException exception) {
+                try {
+                    stream = new URL(configFile).openStream(); // From remote URL
+                } catch (IOException ioException) {
+                    // no op
+                }
+            }
+        }
+
+        return stream;
+    }
+}

src/main/resources/META-INF/native-image/io.github.devatherock/artifactory-badge/native-image.properties

@@ -2,10 +2,8 @@ Args = -H:ResourceConfigurationFiles=build/generated/resources/graalvm/resource-
        -H:Name=micronautgraalapp \
        -H:ReflectionConfigurationFiles=build/graal/reflect-config.json,build/resources/main/graal/reflect-config.json \
        --no-fallback \
-       --allow-incomplete-classpath \
        --report-unsupported-elements-at-runtime \
        --initialize-at-build-time=sun.instrument.InstrumentationImpl \
        --initialize-at-run-time=io.micronaut.aop.internal.intercepted.KotlinInterceptedMethod \
        -H:EnableURLProtocols=http,https \
-       --enable-all-security-services \
        -H:Class=io.github.devatherock.Application

src/main/resources/graal/access-filter.json

@@ -1,5 +1,6 @@
 {
   "rules": [
+  	{"excludeClasses": "io.github.devatherock.logback.LogbackConfigInitializerSpec"},
     {"excludeClasses": "io.github.devatherock.artifactory.config.AppConfigSpec"},
     {"excludeClasses": "io.github.devatherock.artifactory.config.ArtifactoryPropertiesSpec"},
     {"excludeClasses": "io.github.devatherock.artifactory.config.ShieldsIOPropertiesSpec"},

src/test/groovy/io/github/devatherock/logback/LogbackConfigInitializerSpec.groovy

@@ -0,0 +1,71 @@
+package io.github.devatherock.logback
+
+import java.nio.file.Paths
+
+import spock.lang.Specification
+import spock.lang.Unroll
+
+/**
+ * Test class for {@link LogbackConfigInitializer}
+ */
+class LogbackConfigInitializerSpec extends Specification {
+
+    void 'test initialize config - no args'() {
+        when:
+        LogbackConfigInitializer.initializeConfig()
+
+        then:
+        noExceptionThrown()
+    }
+
+    @Unroll
+    void 'test read config - #configFile'() {
+        when:
+        InputStream stream = LogbackConfigInitializer.readConfig(configFile)
+
+        then:
+        stream
+
+        cleanup:
+        stream?.close()
+
+        where:
+        configFile << [
+            'logback.xml',
+            Paths.get(System.properties['user.dir'], 'src/main/resources/logback.xml').toString(),
+            'https://raw.githubusercontent.com/devatherock/artifactory-badge/master/src/main/resources/logback-json.xml'
+        ]
+    }
+
+    @Unroll
+    void 'test read config - non-existent/invalid path - #configFile'() {
+        expect:
+        !LogbackConfigInitializer.readConfig(configFile)
+
+        where:
+        configFile << [
+            'classpath:logback.xml',
+            'dummy.xml',
+            Paths.get(System.properties['user.dir'], 'src/main/resources/logbackx.xml').toString(),
+            'https://raw.githubusercontent.com/devatherock/artifactory-badge/master/src/main/resour/logback-json.xml'
+        ]
+    }
+
+    @Unroll
+    void 'test initialize config - #configFile'() {
+        when:
+        LogbackConfigInitializer.initializeConfig(configFile)
+
+        then:
+        noExceptionThrown()
+
+        where:
+        configFile << [
+            'logback.xml',
+            Paths.get(System.properties['user.dir'], 'src/main/resources/logback.xml').toString(),
+            'https://raw.githubusercontent.com/devatherock/artifactory-badge/master/src/main/resources/logback-json.xml',
+            'classpath:logback.xml',
+            'logback-invalid.xml'
+        ]
+    }
+}

src/test/resources/logback-invalid.xml

@@ -0,0 +1,7 @@
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender" />
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>