feat: build java musl lib

Signed-off-by: Mark Phelps <[email protected]>

.github/workflows/package-java-sdk.yml

@@ -1,7 +1,9 @@
 name: Package Java SDK
 on:
   push:
-    tags: ["flipt-client-java-**"]
+    tags:
+      - "flipt-client-java-**"
+      - "flipt-client-java-musl-**"
 
 permissions:
   contents: write
@@ -18,6 +20,6 @@ jobs:
   build:
     uses: ./.github/workflows/package-ffi-sdks.yml
     with:
-      sdks: java
+      sdks: ${{ startsWith(github.ref, 'refs/tags/flipt-client-java-musl-') && 'java-musl' || 'java' }}
       engine-tag: "latest"
     secrets: inherit

flipt-client-java/build.musl.gradle

@@ -0,0 +1,104 @@
+import java.nio.file.Files
+
+plugins {
+    id 'java-library'
+    id 'maven-publish'
+    id 'signing'
+    id "com.diffplug.spotless" version "6.25.0"
+}
+
+group = 'io.flipt'
+version = '0.0.1'
+description = 'Flipt Client SDK'
+
+
+java {
+    sourceCompatibility = 1.8
+    targetCompatibility = 1.8
+    withSourcesJar()
+    withJavadocJar()
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'com.fasterxml.jackson.dataformat:jackson-dataformat-xml:2.17.2'
+    implementation 'com.fasterxml.jackson.datatype:jackson-datatype-jdk8:2.17.2'
+    implementation 'net.java.dev.jna:jna-platform:5.15.0'
+    testImplementation platform('org.junit:junit-bom:5.11.0')
+    testImplementation 'org.junit.jupiter:junit-jupiter'
+}
+
+spotless {
+    java {
+        importOrder()
+
+        removeUnusedImports()
+
+        cleanthat()
+
+        googleJavaFormat()
+
+        formatAnnotations()
+    }
+}
+
+test {
+    useJUnitPlatform()
+}
+
+publishing {
+    publications {
+        maven(MavenPublication) {
+            artifactId = 'flipt-client-java-musl'
+            from components.java
+
+            pom {
+                name = 'Flipt Client Java SDK'
+                description = 'Flipt Client Java SDK'
+                url = 'https://github.com/flipt-io/flipt-client-sdks/tree/main/flipt-client-java'
+
+                licenses {
+                    license {
+                        name = 'MIT'
+                        url = 'https://opensource.org/license/mit/'
+                    }
+                }
+
+                developers {
+                    developer {
+                        id = 'flipt-io'
+                        name = 'Flipt'
+                        email = '[email protected]'
+                    }
+                }
+
+                scm {
+                    connection = 'scm:git:git://github.com/flipt-io/flipt-client-sdks.git'
+                    developerConnection = 'scm:git:ssh://github.com/flipt-io/flipt-client-sdks.git'
+                    url = 'https://github.com/flipt-io/flipt-client-sdks/tree/main/flipt-client-java'
+                }
+            }
+        }
+    }
+    repositories {
+        maven {
+            def releasesRepoUrl = "https://s01.oss.sonatype.org/service/local/staging/deploy/maven2/"
+            def snapshotsRepoUrl = "https://s01.oss.sonatype.org/content/repositories/snapshots/"
+            url = version.endsWith('SNAPSHOT') ? snapshotsRepoUrl : releasesRepoUrl
+            credentials {
+                username "$System.env.MAVEN_USERNAME"
+                password "$System.env.MAVEN_PASSWORD"
+            }
+        }
+    }
+}
+
+signing {
+    def signingKey = System.getenv('PGP_PRIVATE_KEY')
+    def signingPassphrase = System.getenv('PGP_PASSPHRASE')
+    useInMemoryPgpKeys(signingKey, signingPassphrase)
+    sign publishing.publications.maven
+}

package/ffi/main.go

@@ -21,13 +21,14 @@ var (
 	tag       string
 	engineTag string
 	sdksToFn  = map[string]buildFn{
-		"python":  pythonBuild,
-		"go":      goBuild,
-		"go-musl": goMuslBuild,
-		"node":    nodeBuild,
-		"ruby":    rubyBuild,
-		"java":    javaBuild,
-		"dart":    dartBuild,
+		"python":    pythonBuild,
+		"go":        goBuild,
+		"go-musl":   goMuslBuild,
+		"node":      nodeBuild,
+		"ruby":      rubyBuild,
+		"java":      javaBuild,
+		"java-musl": javaMuslBuild,
+		"dart":      dartBuild,
 	}
 	sema = make(chan struct{}, 5)
 	// defaultExclude is the default exclude for all builds to prevent
@@ -377,6 +378,14 @@ func rubyBuild(ctx context.Context, client *dagger.Client, hostDirectory *dagger
 }
 
 func javaBuild(ctx context.Context, client *dagger.Client, hostDirectory *dagger.Directory, opts ...buildOptionsFn) error {
+	buildOpts := buildOptions{
+		libc: glibc,
+	}
+
+	for _, opt := range opts {
+		opt(&buildOpts)
+	}
+
 	// the directory structure of the tmp directory is as follows:
 	// tmp/linux_x86_64/
 	// tmp/linux_arm64/
@@ -394,25 +403,51 @@ func javaBuild(ctx context.Context, client *dagger.Client, hostDirectory *dagger
 	// we can do this on the host and then copy the files into the container
 
 	rename := map[string]string{
-		"linux_x86_64":  "linux-x86-64",
-		"linux_arm64":   "linux-aarch64",
-		"darwin_x86_64": "darwin-x86-64",
-		"darwin_arm64":  "darwin-aarch64",
+		"linux_x86_64":      "linux-x86-64",
+		"linux_arm64":       "linux-aarch64",
+		"darwin_x86_64":     "darwin-x86-64",
+		"darwin_arm64":      "darwin-aarch64",
+		"linux_arm64_musl":  "linux-aarch64",
+		"linux_x86_64_musl": "linux-x86-64",
 	}
 
 	for old, new := range rename {
+		// if the directory does not exist, skip it
+		if _, err := os.Stat(fmt.Sprintf("tmp/%s", old)); os.IsNotExist(err) {
+			continue
+		}
+
+		// remove directory if it exists
+		if err := os.RemoveAll(fmt.Sprintf("tmp/%s", new)); err != nil {
+			return err
+		}
+
 		if err := os.Rename(fmt.Sprintf("tmp/%s", old), fmt.Sprintf("tmp/%s", new)); err != nil {
 			return err
 		}
 	}
 
 	container := client.Container().From("gradle:8.5.0-jdk11").
-		WithDirectory("/src", hostDirectory.Directory("flipt-client-java")).
-		WithDirectory("/src/src/main/resources", hostDirectory.Directory("tmp"), dagger.ContainerWithDirectoryOpts{
-			Exclude: defaultExclude,
-		}).
-		WithWorkdir("/src").
-		WithExec([]string{"gradle", "-x", "test", "build"})
+		WithDirectory("/src", hostDirectory.Directory("flipt-client-java"))
+
+	if buildOpts.libc == glibc {
+		container = container.
+			WithDirectory("/src/src/main/resources", hostDirectory.Directory("tmp"), dagger.ContainerWithDirectoryOpts{
+				Exclude: defaultExclude,
+			}).
+			WithWorkdir("/src").
+			WithExec([]string{"gradle", "-x", "test", "build"})
+	} else {
+		container = container.
+			WithDirectory("/src/src/main/resources/linux-aarch64", hostDirectory.Directory("tmp/linux-aarch64"), dagger.ContainerWithDirectoryOpts{
+				Exclude: []string{"**/*.rlib", "**/*.a", "**/*.d"},
+			}).
+			WithDirectory("/src/src/main/resources/linux-x86-64", hostDirectory.Directory("tmp/linux-x86-64"), dagger.ContainerWithDirectoryOpts{
+				Exclude: []string{"**/*.rlib", "**/*.a", "**/*.d"},
+			}).
+			WithWorkdir("/src").
+			WithExec([]string{"gradle", "-x", "test", "--build-file", "build.musl.gradle", "build"})
+	}
 
 	var err error
 
@@ -445,17 +480,25 @@ func javaBuild(ctx context.Context, client *dagger.Client, hostDirectory *dagger
 		pgpPassphrase    = client.SetSecret("pgp-passphrase", os.Getenv("PGP_PASSPHRASE"))
 	)
 
-	_, err = container.WithSecretVariable("MAVEN_USERNAME", mavenUsername).
+	container = container.WithSecretVariable("MAVEN_USERNAME", mavenUsername).
 		WithSecretVariable("MAVEN_PASSWORD", mavenPassword).
 		WithSecretVariable("MAVEN_PUBLISH_REGISTRY_URL", mavenRegistryUrl).
 		WithSecretVariable("PGP_PRIVATE_KEY", pgpPrivateKey).
-		WithSecretVariable("PGP_PASSPHRASE", pgpPassphrase).
-		WithExec([]string{"gradle", "publish"}).
-		Sync(ctx)
+		WithSecretVariable("PGP_PASSPHRASE", pgpPassphrase)
+
+	if buildOpts.libc == glibc {
+		_, err = container.WithExec([]string{"gradle", "publish"}).Sync(ctx)
+	} else {
+		_, err = container.WithExec([]string{"gradle", "-b", "build.musl.gradle", "publish"}).Sync(ctx)
+	}
 
 	return err
 }
 
+func javaMuslBuild(ctx context.Context, client *dagger.Client, hostDirectory *dagger.Directory, opts ...buildOptionsFn) error {
+	return javaBuild(ctx, client, hostDirectory, append(opts, withMusl())...)
+}
+
 func dartBuild(ctx context.Context, client *dagger.Client, hostDirectory *dagger.Directory, opts ...buildOptionsFn) error {
 	container := client.Container().From("dart:stable").
 		WithDirectory("/src", hostDirectory.Directory("flipt-client-dart"), dagger.ContainerWithDirectoryOpts{