Allow searching for the .mvn dir recursively by other modules that us…

…e this module (#279)

build/maven.go

@@ -46,6 +46,8 @@ type MavenModule struct {
 	outputWriter io.Writer
 	// Path to the build info temp file that will be generated by the maven extractor.
 	buildInfoPath string
+	// Path to the root project directory in maven multi-module project. May contain .mvn directory.
+	rootProjectDir string
 }
 
 // Maven extractor is the engine for calculating the project dependencies.
@@ -161,6 +163,7 @@ func (mm *MavenModule) createMvnRunConfig() (*mvnRunConfig, error) {
 		buildInfoProperties: extractorProps,
 		mavenOpts:           mm.extractorDetails.mavenOpts,
 		logger:              mm.containingBuild.logger,
+		rootProjectDir:      mm.rootProjectDir,
 	}, nil
 }
 
@@ -288,6 +291,10 @@ func (mm *MavenModule) extractMavenPath(mavenVersionOutput bytes.Buffer) (mavenH
 	return
 }
 
+func (mm *MavenModule) SetRootProjectDir(rootDir string) {
+	mm.rootProjectDir = rootDir
+}
+
 func downloadMavenExtractor(downloadTo string, downloadExtractorFunc func(downloadTo, downloadPath string) error, logger utils.Log) error {
 	filename := fmt.Sprintf(MavenExtractorFileName, MavenExtractorDependencyVersion)
 	filePath := fmt.Sprintf(MavenExtractorRemotePath, MavenExtractorDependencyVersion)
@@ -313,7 +320,7 @@ func (config *mvnRunConfig) GetCmd() *exec.Cmd {
 	cmd = append(cmd, "-DbuildInfoConfig.propertiesFile="+config.buildInfoProperties)
 	cmd = append(cmd, "-Dm3plugin.lib="+config.pluginDependencies)
 	cmd = append(cmd, "-Dclassworlds.conf="+config.cleassworldsConfig)
-	cmd = append(cmd, "-Dmaven.multiModuleProjectDirectory="+config.workspace)
+	cmd = append(cmd, "-Dmaven.multiModuleProjectDirectory="+config.rootProjectDir)
 	if config.mavenOpts != nil {
 		cmd = append(cmd, config.mavenOpts...)
 	}
@@ -334,6 +341,7 @@ type mvnRunConfig struct {
 	mavenOpts           []string
 	logger              utils.Log
 	outputWriter        io.Writer
+	rootProjectDir      string
 }
 
 func (config *mvnRunConfig) SetOutputWriter(outputWriter io.Writer) *mvnRunConfig {

build/maven_test.go

@@ -180,3 +180,35 @@ func TestAddColorToCmdOutput(t *testing.T) {
 		})
 	}
 }
+
+func TestCommandWithRootProjectDir(t *testing.T) {
+	mvnc := &mvnRunConfig{
+		java:                "myJava",
+		plexusClassworlds:   "myPlexus",
+		cleassworldsConfig:  "myCleassworldsConfig",
+		mavenHome:           "myMavenHome",
+		pluginDependencies:  "myPluginDependencies",
+		workspace:           "myWorkspace",
+		goals:               []string{"myGoal1", "myGoal2"},
+		buildInfoProperties: "myBuildInfoProperties",
+		mavenOpts:           []string{"myMavenOpt1", "myMavenOpt2"},
+		logger:              nil,
+		outputWriter:        nil,
+		rootProjectDir:      "myRootProjectDir",
+	}
+	cmd := mvnc.GetCmd()
+	assert.Equal(t, "myJava", cmd.Args[0])
+	assert.Equal(t, "-classpath", cmd.Args[1])
+	assert.Equal(t, "myPlexus", cmd.Args[2])
+	assert.Contains(t, cmd.Args, "-DbuildInfoConfig.propertiesFile=myBuildInfoProperties")
+	assert.Contains(t, cmd.Args, "-Dclassworlds.conf=myCleassworldsConfig")
+	assert.Contains(t, cmd.Args, "-Dclassworlds.conf=myCleassworldsConfig")
+	assert.Contains(t, cmd.Args, "-Dmaven.home=myMavenHome")
+	assert.Contains(t, cmd.Args, "-Dm3plugin.lib=myPluginDependencies")
+	assert.Contains(t, cmd.Args, "myGoal1")
+	assert.Contains(t, cmd.Args, "myGoal2")
+	assert.Contains(t, cmd.Args, "-DbuildInfoConfig.propertiesFile=myBuildInfoProperties")
+	assert.Contains(t, cmd.Args, "myMavenOpt1")
+	assert.Contains(t, cmd.Args, "myMavenOpt2")
+	assert.Contains(t, cmd.Args, "-Dmaven.multiModuleProjectDirectory=myRootProjectDir")
+}