add backup client (python)

.circleci/config.yml

@@ -1,6 +1,6 @@
 version: 2
 jobs:
-  build_and_deploy:
+  build_and_push_db:
     machine:
       image: circleci/classic:latest
     environment:
@@ -15,7 +15,7 @@ jobs:
       - restore_cache:
           key: cache-{{ .Branch }}
       - run:
-          name: build
+          name: Build server
           command: docker-compose run sbt sbt assembly
       - save_cache:
           key: cache-{{ .Branch }}
@@ -24,20 +24,45 @@ jobs:
             - "~/.ivy2"
             - "~/.sbt"
       - run:
-          name: build docker
-          command: docker build -t scalableminds/fossildb:${CIRCLE_BRANCH}__${CIRCLE_BUILD_NUM} .
+          name: Build server docker image
+          command: |
+            docker build \
+            -t scalableminds/fossildb:${CIRCLE_BRANCH}__${CIRCLE_BUILD_NUM} \
+            -t scalableminds/fossildb:${CIRCLE_BRANCH} \
+            .
       - run:
-          name: deployment
+          name: Push to DockerHub
           command: |
             set -x
             docker login -u $DOCKER_USER -p $DOCKER_PASS
-            docker tag scalableminds/fossildb:${CIRCLE_BRANCH}__${CIRCLE_BUILD_NUM} scalableminds/fossildb:${CIRCLE_BRANCH}
             docker push scalableminds/fossildb:${CIRCLE_BRANCH}__${CIRCLE_BUILD_NUM}
             docker push scalableminds/fossildb:${CIRCLE_BRANCH}
             docker logout
+  build_and_push_client:
+    machine:
+      image: circleci/classic:latest
+    steps:
+      - checkout
+      - run:
+          name: Build client docker image
+          command: |
+            docker build \
+            -f client/Dockerfile \
+            -t scalableminds/fossildb-client:${CIRCLE_BRANCH}__${CIRCLE_BUILD_NUM} \
+            -t scalableminds/fossildb-client:${CIRCLE_BRANCH} \
+            .
+      - run:
+          name: Push to DockerHub
+          command: |
+            set -x
+            docker login -u $DOCKER_USER -p $DOCKER_PASS
+            docker push scalableminds/fossildb-client:${CIRCLE_BRANCH}__${CIRCLE_BUILD_NUM}
+            docker push scalableminds/fossildb-client:${CIRCLE_BRANCH}
+            docker logout
 
 workflows:
   version: 2
   default:
     jobs:
-      - build_and_deploy
+      - build_and_push_db
+      - build_and_push_client

client/.gitignore

@@ -0,0 +1,5 @@
+__pycache__
+*.pyc
+
+fossildbapi_pb2_grpc.py
+fossildbapi_pb2.py

client/Dockerfile

@@ -0,0 +1,11 @@
+FROM python:3.6-stretch
+
+COPY src/main/protobuf /fossildb/src/main/protobuf
+COPY client /fossildb/client
+
+WORKDIR /fossildb/client
+
+RUN pip3 install -r requirements.txt
+RUN ./update_api.sh
+
+ENTRYPOINT /fossildb/client/backup-client.py

client/backup-client.py

@@ -0,0 +1,51 @@
+#!/usr/bin/env python3
+
+import grpc
+import sys
+import argparse
+
+import fossildbapi_pb2
+import fossildbapi_pb2_grpc
+
+
+def main():
+
+    commands = {'backup': backup, 'restore': restore}
+
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        'address', metavar='address', default='localhost', nargs='?',
+        help='address of the fossildb server (default: %(default)s)')
+    parser.add_argument(
+        'port', metavar='port', type=int, default=8090,  nargs='?',
+        help='port of the fossildb server (default: %(default)s)')
+    parser.add_argument(
+        'command', metavar='command',
+        help='command to execute, one of {}'.format(list(commands.keys())))
+
+    args = parser.parse_args()
+
+    full_address = '{}:{}'.format(args.address, args.port)
+
+    print('Requesting RestoreFromBackup to FossilDB at', full_address)
+
+    channel = grpc.insecure_channel(full_address)
+    stub = fossildbapi_pb2_grpc.FossilDBStub(channel)
+
+    reply = commands[args.command](stub)
+
+    print(reply)
+    if not reply.success:
+        sys.exit(1)
+
+
+def restore(stub):
+    return stub.RestoreFromBackup(fossildbapi_pb2.RestoreFromBackupRequest())
+
+
+def backup(stub):
+    return stub.Backup(fossildbapi_pb2.BackupRequest())
+
+
+if __name__ == '__main__':
+    main()

client/requirements.txt

@@ -0,0 +1,2 @@
+argparse
+grpcio-tools

client/update_api.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+SCRIPTPATH="$( cd "$(dirname "$0")" ; pwd -P )"
+
+python3 -m grpc_tools.protoc -I$SCRIPTPATH/../src/main/protobuf --python_out=$SCRIPTPATH --grpc_python_out=$SCRIPTPATH $SCRIPTPATH/../src/main/protobuf/fossildbapi.proto