1 files changed, 60 insertions, 0 deletions
diff --git a/mobile/android/gradle.py b/mobile/android/gradle.py
new file mode 100644
index 0000000000..9f310ddb7b
--- /dev/null
+++ b/mobile/android/gradle.py
@@ -0,0 +1,60 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import os
+import subprocess
+import sys
+from contextlib import contextmanager
+
+import mozpack.path as mozpath
+from mozbuild.util import ensureParentDir, lock_file
+
+
+@contextmanager
+def gradle_lock(topobjdir, max_wait_seconds=600):
+    # Building the same Gradle root project with multiple concurrent processes
+    # is not well supported, so we use a simple lock file to serialize build
+    # steps.
+    lock_path = "{}/gradle/mach_android.lockfile".format(topobjdir)
+    ensureParentDir(lock_path)
+    lock_instance = lock_file(lock_path, max_wait=max_wait_seconds)
+
+    try:
+        yield
+    finally:
+        del lock_instance
+
+
+def android(verb, *args):
+    import buildconfig
+
+    with gradle_lock(buildconfig.topobjdir):
+        cmd = [
+            sys.executable,
+            mozpath.join(buildconfig.topsrcdir, "mach"),
+            "android",
+            verb,
+        ]
+        cmd.extend(args)
+        env = dict(os.environ)
+        # Confusingly, `MACH` is set only within `mach build`.
+        if env.get("MACH"):
+            env["GRADLE_INVOKED_WITHIN_MACH_BUILD"] = "1"
+        if env.get("LD_LIBRARY_PATH"):
+            del env["LD_LIBRARY_PATH"]
+        subprocess.check_call(cmd, env=env)
+
+        return 0
+
+
+def assemble_app(dummy_output_file, *inputs):
+    return android("assemble-app")
+
+
+def generate_sdk_bindings(dummy_output_file, *args):
+    return android("generate-sdk-bindings", *args)
+
+
+def generate_generated_jni_wrappers(dummy_output_file, *args):
+    return android("generate-generated-jni-wrappers", *args)