[#756] Add verbose option to restore pre-3.6.1 logging

src/it/projects/verbose-logging/pom.xml

@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!--
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied.  See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
+
+<project>
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.apache.maven.its.shade.verbose</groupId>
+  <artifactId>test</artifactId>
+  <version>1.0</version>
+  <packaging>jar</packaging>
+
+  <name>verbose-logging</name>
+  <description>
+    Test that the verbose option logs included/excluded dependencies at info level.
+  </description>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-api</artifactId>
+      <version>1.7.36</version>
+    </dependency>
+    <dependency>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-simple</artifactId>
+      <version>1.7.36</version>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-shade-plugin</artifactId>
+        <version>@project.version@</version>
+        <executions>
+          <execution>
+            <phase>package</phase>
+            <goals>
+              <goal>shade</goal>
+            </goals>
+            <configuration>
+              <verbose>true</verbose>
+              <artifactSet>
+                <excludes>
+                  <exclude>org.slf4j:slf4j-simple</exclude>
+                </excludes>
+              </artifactSet>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+</project>

src/it/projects/verbose-logging/verify.groovy

@@ -0,0 +1,26 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+def buildLog = new File(basedir, 'build.log')
+assert buildLog.exists()
+
+def content = buildLog.text
+assert content.contains('[INFO] Including org.slf4j:slf4j-api:jar:1.7.36 in the shaded jar.')
+assert content.contains('[INFO] Excluding org.slf4j:slf4j-simple:jar:1.7.36 from the shaded jar.')
+
+return true

src/main/java/org/apache/maven/plugins/shade/mojo/ShadeMojo.java

@@ -412,6 +412,16 @@ public class ShadeMojo extends AbstractMojo {
     @Parameter(defaultValue = "false")
     private boolean skip;
 
+    /**
+     * When true, the plugin logs details about the shading process at info level, such as the dependencies
+     * included in or excluded from the shaded jar. When false, those details are only logged at debug level.
+     * This restores the output that was logged at info level before version 3.6.1.
+     *
+     * @since 3.6.3
+     */
+    @Parameter(property = "shade.verbose", defaultValue = "false")
+    private boolean verbose;
+
     /**
      * Extra JAR files to infuse into shaded result. Accepts list of files that must exists. If any of specified
      * files does not exist (or is not a file), Mojo will fail.
@@ -787,7 +797,7 @@ private List<Artifact> processArtifactSelectors(
                 continue;
             }
 
-            getLog().debug("Including " + artifact.getId() + " in the shaded jar.");
+            logVerbose("Including " + artifact.getId() + " in the shaded jar.");
 
             artifacts.add(artifact.getFile());
             artifactIds.add(getId(artifact));
@@ -846,10 +856,10 @@ private List<Artifact> processArtifactSelectors(
         processedArtifacts.removeAll(emptyTestSourceArtifacts);
 
         for (Artifact artifact : excludedArtifacts) {
-            getLog().debug("Excluding " + artifact.getId() + " from the shaded jar.");
+            logVerbose("Excluding " + artifact.getId() + " from the shaded jar.");
         }
         for (Artifact artifact : pomArtifacts) {
-            getLog().debug("Skipping pom dependency " + artifact.getId() + " in the shaded jar.");
+            logVerbose("Skipping pom dependency " + artifact.getId() + " in the shaded jar.");
         }
         for (Artifact artifact : emptySourceArtifacts) {
             getLog().warn("Skipping empty source jar " + artifact.getId() + ".");
@@ -868,8 +878,16 @@ private boolean invalidMainArtifact() {
                 || !project.getArtifact().getFile().isFile();
     }
 
+    private void logVerbose(String message) {
+        if (verbose) {
+            getLog().info(message);
+        } else {
+            getLog().debug(message);
+        }
+    }
+
     private void replaceFile(File oldFile, File newFile) throws MojoExecutionException {
-        getLog().debug("Replacing " + oldFile + " with " + newFile);
+        logVerbose("Replacing " + oldFile + " with " + newFile);
 
         File origFile = new File(outputDirectory, "original-" + oldFile.getName());
         if (oldFile.exists() && !oldFile.renameTo(origFile)) {
@@ -1029,7 +1047,7 @@ private List<Filter> getFilters(List<Artifact> artifactCollection, ArtifactSelec
                 }
 
                 if (jars.isEmpty()) {
-                    getLog().debug("No artifact matching filter " + filter.getArtifact());
+                    logVerbose("No artifact matching filter " + filter.getArtifact());
 
                     continue;
                 }