Support new env. variable BP_MAVEN_ACTIVE_PROFILES

* append its profiles last

buildpack.toml

@@ -43,6 +43,12 @@ api = "0.7"
     description = "the additionnal arguments (appended to BP_MAVEN_BUILD_ARGUMENTS) to pass to Maven"
     name = "BP_MAVEN_ADDITIONAL_BUILD_ARGUMENTS"
 
+  [[metadata.configurations]]
+    build = true
+    default = ""
+    description = "the active profiles (comma separated: such as: p1,!p2,?p3) to pass to Maven"
+    name = "BP_MAVEN_ACTIVE_PROFILES"
+
   [[metadata.configurations]]
     build = true
     default = "target/*.[ejw]ar"

maven/build.go

@@ -200,6 +200,15 @@ func (b Build) configureMaven(context libcnb.BuildContext) (libbs.ArtifactResolv
 		args = append(args, additionalArgs...)
 	}
 
+	profiles, err := libbs.ResolveArguments("BP_MAVEN_ACTIVE_PROFILES", b.configResolver)
+	if err != nil {
+		return libbs.ArtifactResolver{}, map[string]interface{}{}, []string{},
+			fmt.Errorf("unable to resolve profiles build arguments\n%w", err)
+	} else if len(profiles) > 0 {
+		profiles = append([]string{"-P"}, profiles...)
+		args = append(args, profiles...)
+	}
+
 	return libbs.ArtifactResolver{
 		ArtifactConfigurationKey: "BP_MAVEN_BUILT_ARTIFACT",
 		ConfigurationResolver:    b.configResolver,

maven/build_test.go

@@ -155,6 +155,37 @@ func testBuild(t *testing.T, context spec.G, it spec.S) {
 		})
 	})
 
+	context("BP_MAVEN_ACTIVE_PROFILES adds active profiles", func() {
+		it.Before(func() {
+			Expect(os.Setenv("BP_MAVEN_BUILD_ARGUMENTS", "--batch-mode user-provided-argument")).To(Succeed())
+			Expect(os.Setenv("BP_MAVEN_ADDITIONAL_BUILD_ARGUMENTS", "-Dgpg.skip -Dmaven.javadoc.skip=true")).To(Succeed())
+			Expect(os.Setenv("BP_MAVEN_ACTIVE_PROFILES", "native,?prod,!aot,-dev")).To(Succeed())
+		})
+
+		it.After(func() {
+			Expect(os.Unsetenv(("BP_MAVEN_BUILD_ARGUMENTS"))).To(Succeed())
+			Expect(os.Unsetenv(("BP_MAVEN_ADDITIONAL_BUILD_ARGUMENTS"))).To(Succeed())
+			Expect(os.Unsetenv(("BP_MAVEN_ACTIVE_PROFILES"))).To(Succeed())
+		})
+		it("the profiles native,?prod,!aot,-dev got appended after all the other maven arguments", func() {
+			Expect(os.WriteFile(mvnwFilepath, []byte{}, 0644)).To(Succeed())
+			ctx.StackID = "test-stack-id"
+			mavenBuild.TTY = false
+
+			result, err := mavenBuild.Build(ctx)
+			Expect(err).NotTo(HaveOccurred())
+
+			Expect(result.Layers[1].(libbs.Application).Arguments).To(Equal([]string{
+				"--batch-mode",
+				"user-provided-argument",
+				"-Dgpg.skip",
+				"-Dmaven.javadoc.skip=true",
+				"-P",
+				"native,?prod,!aot,-dev",
+			}))
+		})
+	})
+
 	context("BP_MAVEN_SETTINGS_PATH configuration is set", func() {
 		it.Before(func() {
 			ctx.Buildpack.Metadata = map[string]interface{}{