Fix #423 Don't log warning for unused overrides in remote override file.

src/it/ISSUE-423/invoker.properties

@@ -0,0 +1,2 @@
+invoker.goals=clean license:add-third-party
+invoker.failureBehavior=fail-fast

src/it/ISSUE-423/pom.xml

@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  #%L
+  License Maven Plugin
+  %%
+  Copyright (C) 2008 - 2011 CodeLutin, Codehaus, Tony Chemit
+  %%
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as
+  published by the Free Software Foundation, either version 3 of the
+  License, or (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Lesser Public License for more details.
+
+  You should have received a copy of the GNU General Lesser Public
+  License along with this program.  If not, see
+  <http://www.gnu.org/licenses/lgpl-3.0.html>.
+  #L%
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.codehaus.mojo.license.test</groupId>
+  <artifactId>issue-423</artifactId>
+  <version>@pom.version@</version>
+
+  <name>License Test :: ISSUE-423</name>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <license.verbose>true</license.verbose>
+  </properties>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>license-maven-plugin</artifactId>
+        <version>@pom.version@</version>
+      </plugin>
+    </plugins>
+  </build>
+
+  <dependencies>
+    <dependency>
+      <groupId>commons-logging</groupId>
+      <artifactId>commons-logging</artifactId>
+      <version>1.1.1</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.commons</groupId>
+      <artifactId>commons-lang3</artifactId>
+      <version>3.8.1</version>
+    </dependency>
+  </dependencies>
+
+</project>

src/it/ISSUE-423/postbuild.groovy

@@ -0,0 +1,36 @@
+/*
+ * #%L
+ * License Maven Plugin
+ * %%
+ * Copyright (C) 2008 - 2011 CodeLutin, Codehaus, Tony Chemit
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Lesser Public License for more details.
+ *
+ * You should have received a copy of the GNU General Lesser Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/lgpl-3.0.html>.
+ * #L%
+ */
+
+file = new File(basedir, 'target/generated-sources/license/THIRD-PARTY.txt')
+assert file.exists()
+content = file.text
+// Check that the non-overridden dependency is present.
+assert content.contains('(Apache License, Version 2.0) Apache Commons Lang (org.apache.commons:commons-lang3:3.8.1 - http://commons.apache.org/proper/commons-lang/)')
+// Check that the license name for a dependency can be overridden.
+assert content.contains('(Apache-2.0) Commons Logging (commons-logging:commons-logging:1.1.1 - http://commons.apache.org/logging)')
+// Check that the unused override does not end up in the report.
+assert !content.contains('antlr')
+
+// Check that the log contains a warning for the unused override.
+log = new File(basedir, 'build.log')
+assert log.exists()
+assert log.text.contains('dependency [org.antlr--antlr--3.5.2] does not exist in project.')

src/it/ISSUE-423/src/license/override-THIRD-PARTY.properties

@@ -0,0 +1,2 @@
+commons-logging--commons-logging--1.1.1=Apache-2.0
+org.antlr--antlr--3.5.2=BSD-3-Clause

src/main/java/org/codehaus/mojo/license/api/DefaultThirdPartyTool.java

@@ -614,7 +614,16 @@ public void overrideLicenses( LicenseMap licenseMap, SortedMap<String, MavenProj
                 MavenProject project = artifactCache.get( id );
                 if ( project == null )
                 {
-                    LOG.warn( "dependency [{}] does not exist in project.", id );
+                    // Log at warn for local override files, but at debug for remote (presumably shared) override files.
+                    String protocol = UrlRequester.findProtocol( overrideUrl );
+                    if ( "http".equals( protocol ) || "https".equals( protocol ) )
+                    {
+                        LOG.debug( "dependency [{}] does not exist in project.", id );
+                    }
+                    else
+                    {
+                        LOG.warn( "dependency [{}] does not exist in project.", id );
+                    }
                     continue;
                 }
 

src/main/java/org/codehaus/mojo/license/utils/UrlRequester.java

@@ -90,6 +90,20 @@ public static String getFromUrl( String url ) throws IOException
         return getFromUrl( url, "UTF-8" );
     }
 
+    /**
+     * Returns the protocol of the given URL as a string.
+     *
+     * The RFC specifies that the url is composed by <protocol>:<schema-part>.
+     *
+     * @param url the URL as a string.
+     * @return the protocol from the URL.
+     */
+    public static String findProtocol( String url )
+    {
+        // Here could not be used the URL parser because classpath does not have a registered Handler
+        return StringUtils.substringBefore( url, ":" ).toLowerCase();
+    }
+
     /**
      * Returns the content of the resource pointed by the given URL as a string.
      *
@@ -100,9 +114,7 @@ public static String getFromUrl( String url ) throws IOException
      */
     public static String getFromUrl( String url, String encoding ) throws IOException
     {
-        // by RFC url is composed by <protocol>:<schema-part>.
-        // Here could not be used the URL parser because classpath does not have a registered Handler
-        String protocol = StringUtils.substringBefore( url, ":" ).toLowerCase();
+        String protocol = findProtocol( url );
         Charset charset = Charset.forName( encoding );
 
         String result = null;