Init commit for standalone enodebd

Change-Id: I88eeef5135dd7ba8551ddd9fb6a0695f5325337b
diff --git a/tools/gen_prometheus_proto.py b/tools/gen_prometheus_proto.py
new file mode 100644
index 0000000..f0a0ec9
--- /dev/null
+++ b/tools/gen_prometheus_proto.py
@@ -0,0 +1,38 @@
+"""
+Copyright 2020 The Magma Authors.
+
+This source code is licensed under the BSD-style license found in the
+LICENSE file in the root directory of this source tree.
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+"""
+import os
+import sys
+
+from grpc.tools import protoc
+
+
+def gen_prometheus_proto_py(proto_file_dir, output_dir):
+    # Function For fb-internal build tools - open source should use this file
+    # as a script
+    protoc.main(
+        (
+            '',
+            '-I' + proto_file_dir,
+            '--python_out=' + output_dir,
+            '--grpc_python_out=' + output_dir,
+            os.path.join(proto_file_dir, 'metrics.proto'),
+        ),
+    )
+
+
+if __name__ == '__main__':
+    # ./gen_prometheus_proto.py <magma root> <output_dir>
+    magma_root, out_dir = sys.argv[1], sys.argv[2]
+    file_dir = os.path.join(magma_root, 'proto_files/orc8r/protos/prometheus')
+    gen_prometheus_proto_py(file_dir, out_dir)
+
diff --git a/tools/gen_protos.py b/tools/gen_protos.py
new file mode 100644
index 0000000..3468f9e
--- /dev/null
+++ b/tools/gen_protos.py
@@ -0,0 +1,106 @@
+"""
+Copyright 2020 The Magma Authors.
+
+This source code is licensed under the BSD-style license found in the
+LICENSE file in the root directory of this source tree.
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+"""
+import os
+import shutil
+import sys
+from typing import Iterable, List
+
+from grpc.tools import protoc
+
+
+def find_all_proto_files_in_dir(input_dir: str) -> List[str]:
+    """
+    Returns a list of filenames of .proto files in the given directory
+
+    Args:
+        input_dir: Directory to search in
+
+    Returns:
+        list(str): List of .proto filenames in the directory
+    """
+    proto_files = []
+    for root, _, names in os.walk(input_dir):
+        for name in names:
+            full_filename = os.path.join(root, name)
+            extn = os.path.splitext(name)[1]
+
+            # Recurse into subdirectories
+            if os.path.isdir(full_filename):
+                proto_files += find_all_proto_files_in_dir(full_filename)
+            if os.path.isfile(full_filename) and extn == '.proto':
+                # TODO: find a better way to exclude the prometheus proto
+                if not full_filename.endswith('prometheus/metrics.proto'):
+                    proto_files.append(full_filename)
+    return proto_files
+
+
+def gen_bindings(
+        input_dir: str,
+        include_paths: Iterable[str],
+        proto_path: str,
+        output_dir: str,
+) -> None:
+    """
+    Generates python and Go bindings for all .proto files in input dir
+       @input_dir - input directory with .proto files to generate code for
+       @include_paths - a list of include paths to resolve relative imports in .protos
+       @output_dir - output directory to put generated code in
+    """
+    protofiles = find_all_proto_files_in_dir(input_dir)
+
+    inouts = [
+        '-I' + proto_path,
+        '--python_out=' + output_dir,
+        '--grpc_python_out=' + output_dir,
+    ]
+    # Only run mypy (dev dependency) when the protoc-consumed executable exists
+    if shutil.which('protoc-gen-mypy') is not None:
+        inouts.append('--mypy_out=' + output_dir)
+
+    protoc.main(
+        ('',) +
+        tuple('-I' + path for path in include_paths) +
+        tuple(inouts) +
+        tuple(f for f in protofiles),
+    )
+
+
+def main():
+    """
+    Default main module. Generates .py code for all proto files
+    specified by the arguments
+    """
+    if len(sys.argv) != 5:
+        print(
+            "Usage: ./gen_protos.py <dir containing .proto's> <include paths CSV> <proto_path for imports> <output dir>",
+        )
+        exit(1)
+    input_dir = sys.argv[1]
+    include_paths = sys.argv[2].split(',')
+    # The deprecated vagrant box image amarpad/magma_dev has grpc installed
+    # from source, with header files located at /usr/local/include. In the new
+    # box image amarpad/debian_jessie, grpc is installed from deb package, with
+    # headers located at /usr/include. Currently, only the magma_test vm uses
+    # amarpad/magma_dev.
+    #
+    # TODO: Migrate magma_test to amarpad/debian_jessie to to remove the
+    # '/usr/local/include'
+    include_paths.append('/usr/local/include')
+    proto_path = sys.argv[3]
+    output_dir = sys.argv[4]
+    gen_bindings(input_dir, include_paths, proto_path, output_dir)
+
+
+if __name__ == "__main__":
+    main()
+