feat: added template for java binary builder

builders/binary/java_binary_builder.py

@@ -0,0 +1,108 @@
+#  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
+
+
+class JavaBinaryBuilder(ArtifactBuilder):
+    def __init__(self):
+        self.logger = Logger()
+
+    def build(self, repo_path: str, repo_gh_name: str, artifact: dict) -> str:
+        repo_name = os.path.basename(repo_path)
+        version = artifact.get("version", "1.0")
+
+        output_path = f"{repo_path}/build/{repo_gh_name}_{version}.jar"
+
+        docker_image = artifact.get("docker_image", "maven:3.9-eclipse-temurin-17")
+
+        try:
+            os.makedirs("build", exist_ok=True)
+
+            self.logger.info(f"Building Java artifact for {repo_gh_name}")
+
+            pom_path = os.path.join(repo_path, "pom.xml")
+            gradle_path = os.path.join(repo_path, "build.gradle")
+            gradle_kts_path = os.path.join(repo_path, "build.gradle.kts")
+
+            is_maven = os.path.exists(pom_path)
+            is_gradle = os.path.exists(gradle_path) or os.path.exists(gradle_kts_path)
+
+            if not is_maven and not is_gradle:
+                raise RuntimeError(
+                    f"No supported Java build file found in {repo_path}. "
+                    f"Expected pom.xml or build.gradle(.kts)."
+                )
+
+            if is_maven:
+                cmd = ["mvn", "-DskipTests", "clean", "package"]
+
+                expected_build_dir = os.path.join(repo_path, "target")
+
+            else:
+                cmd = ["gradle", "clean", "build", "-x", "test"]
+
+                expected_build_dir = os.path.join(repo_path, "build", "libs")
+
+            subprocess.run(
+                [
+                    "docker", "run", "--rm",
+                    "-v", f"{repo_path}:{repo_path}",
+                    "-v", f"{repo_path}:/app",
+                    "-w", "/app",
+                    docker_image,
+                ] + cmd,
+                check=True
+            )
+
+            jar_candidates = []
+            if os.path.isdir(expected_build_dir):
+                for f in os.listdir(expected_build_dir):
+                    if f.endswith(".jar"):
+                        jar_candidates.append(os.path.join(expected_build_dir, f))
+
+            if not jar_candidates:
+                raise RuntimeError(
+                    f"No JAR produced. Looked in: {expected_build_dir}. "
+                    f"TODO: Confirm build output paths / packaging."
+                )
+
+            chosen_jar = jar_candidates[0]
+
+            subprocess.run(["cp", chosen_jar, 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_name}: {str(e)}")
+            raise
+
+    def publish(self, artifact_path: str, repo_gh_name: str, artifact: dict) -> None:
+        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