feat: added template for java binary builder

builders/binary/java_binary_builder.py

@@ -0,0 +1,114 @@
+#  Copyright Contributors to the Mainframe Software Hub for Linux Project.
+#  SPDX-License-Identifier: Apache-2.0
+
+import os
+import subprocess
+from monitoring.logger import Logger
+from builders.plugins.plugin_interface import ArtifactBuilder
+
+BUILD_SYSTEMS = {
+    "maven": {
+        "files": ["pom.xml"],
+        "command": ["mvn", "-DskipTests", "clean", "package"],
+        "build_dir": "target",
+        "docker_image": "maven:3.9-eclipse-temurin-17",
+    },
+    "gradle": {
+        "files": ["build.gradle", "build.gradle.kts"],
+        "command": ["gradle", "clean", "build", "-x", "test"],
+        "build_dir": os.path.join("build", "libs"),
+        "docker_image": "gradle:8.7-jdk17",
+    },
+}
+
+def detect_build_system(repo_path: str):
+    for system, config in BUILD_SYSTEMS.items():
+        for f in config["files"]:
+            if os.path.exists(os.path.join(repo_path, f)):
+                return system, config
+    return None, None
+
+class JavaBinaryBuilder(ArtifactBuilder):
+    def __init__(self):
+        self.logger = Logger()
+
+    def build(self, repo_path: str, repo_gh_name: str, artifact: dict) -> str:
+        version = artifact.get("version", "1.0")
+        output_dir = os.path.join(repo_path, "build")
+        output_path = os.path.join(output_dir, f"{repo_gh_name}_{version}_s390x.jar")
+
+        os.makedirs(output_dir, exist_ok=True)
+
+        system, config = detect_build_system(repo_path)
+        if not system:
+            raise RuntimeError(
+                f"No supported Java build file found in {repo_path}. "
+                f"Expected one of: {', '.join(sum([v['files'] for v in BUILD_SYSTEMS.values()], []))}"
+            )
+
+        docker_image = artifact.get("docker_image", config["docker_image"])
+        cmd = config["command"]
+        build_dir = os.path.join(repo_path, config["build_dir"])
+
+        try:
+            self.logger.info(f"Building Java artifact using {system} for {repo_gh_name}")
+
+            subprocess.run(
+                [
+                    "docker", "run", "--rm",
+                    "-v", f"{repo_path}:{repo_path}",
+                    "-v", f"{repo_path}:/app",
+                    "-w", "/app",
+                    docker_image,
+                ] + cmd,
+                check=True
+            )
+
+            jars = [
+                os.path.join(build_dir, f)
+                for f in os.listdir(build_dir)
+                if f.endswith(".jar")
+                and not f.endswith("-sources.jar")
+                and not f.endswith("-javadoc.jar")
+            ]
+
+            if not jars:
+                raise RuntimeError(f"No runnable JAR found in {build_dir}")
+
+            subprocess.run(["cp", jars[0], output_path], check=True)
+
+            self.logger.info(f"Built Java artifact at {output_path}")
+            return output_path
+
+        except subprocess.CalledProcessError as e:
+            self.logger.error(f"Failed to build Java artifact for {repo_gh_name}: {str(e)}")
+            raise
+
+    def publish(self, artifact_path: str, repo_gh_name: str, artifact: dict):
+        from lib.checksum import generate_checksum
+
+        checksum = generate_checksum(artifact_path)
+        version = artifact.get("version", "1.0")
+
+        self.logger.info(
+            f"Publishing {artifact_path} with checksum {checksum} for {repo_gh_name}"
+        )
+
+        try:
+            subprocess.run(
+                [
+                    "gh", "release", "create",
+                    f"v{version}",
+                    "--title", f"Version {version}",
+                    "--generate-notes",
+                    artifact_path,
+                    f"{artifact_path}.sha256",
+                ],
+                cwd=os.path.dirname(artifact_path),
+                check=True
+            )
+            self.logger.info(f"Published {artifact_path} to GitHub Releases")
+
+        except subprocess.CalledProcessError as e:
+            self.logger.error(f"Failed to publish {artifact_path}: {str(e)}")
+            raise