Create state store in a data dir for easier docker volume handling

Author: g3force

.gitignore

@@ -1,6 +1,7 @@
 .DS_Store
 node_modules
 /dist
+/data
 
 # Editor directories and files
 .idea/*

Dockerfile

@@ -17,7 +17,7 @@ RUN GOOS=linux GOARCH=amd64 packr build -o ../../release/ssl-game-controller_lin
 FROM alpine:3.9
 COPY --from=build_go /go/src/github.com/RoboCup-SSL/ssl-game-controller/release/ssl-game-controller_linux_amd64 /app/ssl-game-controller
 COPY config config
-WORKDIR /work
+RUN mkdir data
 EXPOSE 8081 10007 10008 10011 10009
 ENTRYPOINT ["/app/ssl-game-controller", "-address", ":8081"]
 CMD []

README.md

@@ -20,12 +20,12 @@ You can also use pre-build docker images:
 docker pull robocupssl/ssl-game-controller
 # Run GC with default configuration
 docker run -p 8081:8081 robocupssl/ssl-game-controller
-# You can also mount the config and work directories locally
+# Mount local directories 
 docker run -p 8081:8081 \
   # Local config dir
   -v "$(pwd)"/config:/config \
-  # Local working dir with the current state
-  -v "$(pwd)"/work:/work \
+  # Local data dir (current state)
+  -v "$(pwd)"/data:/data \
   robocupssl/ssl-game-controller
 ```
 

config/ssl-game-controller.yaml

@@ -22,7 +22,7 @@ server:
 engine:
   config-filename: config/engine.yaml
 game:
-  state-store-file: state-store.json.stream
+  state-store-file: data/state-store.json.stream
   yellow-card-duration: 2m
   yellow-card-bot-removal-time: 10s
   multiple-card-step: 2

internal/app/store/store.go

@@ -51,6 +51,10 @@ func (s *Store) LatestEntry() *statemachine.StateChange {
 
 // Open opens the store file
 func (s *Store) Open() error {
+	err := os.MkdirAll(filepath.Dir(s.filename), 0755)
+	if err != nil {
+		return errors.Wrapf(err, "Could not create directory for store file: %v", s.filename)
+	}
 	f, err := os.OpenFile(s.filename, os.O_RDWR|os.O_CREATE, 0600)
 	if err != nil {
 		return err