feat(dist): support pre-load test graph data in docker container

hugegraph-dist/README.md

@@ -0,0 +1,35 @@
+# Deploy Hugegraph server with docker compose(WIP)
+
+## 1. Deploy
+
+We can use `docker-compose up -d` to quickly start an inner HugeGraph server with RocksDB in background.
+
+The docker-compose.yaml is below:
+
+```yaml
+version: '3'
+services:
+  graph:
+    image: hugegraph/hugegraph
+    ports:
+      - 18080:8080
+```
+
+## 2. Create Sample Graph on Server Startup
+
+If you want to pre-load some data or graphs in container, you can set the env `PRELOAD=ture`
+
+If you want to customize the pre-loaded data, please mount the the groovy scripts
+
+```yaml
+version: '3'
+services:
+  graph:
+    image: hugegraph/hugegraph
+    environment:
+      - PRELOAD=true
+    volumes:
+      - /path/to/yourscript:/hugegraph/scripts/example-preload.groovy
+    ports:
+      - 18080:8080
+```

hugegraph-dist/src/assembly/static/bin/start-hugegraph.sh

@@ -62,6 +62,7 @@ BIN=$(abs_path)
 TOP="$(cd "$BIN"/../ && pwd)"
 CONF="$TOP/conf"
 LOGS="$TOP/logs"
+SCRIPTS="$TOP/scripts"
 PID_FILE="$BIN/pid"
 
 . "$BIN"/util.sh
@@ -79,13 +80,23 @@ if [ ! -d "$LOGS" ]; then
     mkdir -p "$LOGS"
 fi
 
+GREMLIN_SERVER_CONF="gremlin-server.yaml"
+if [[ $PRELOAD == "true" ]]; then
+    GREMLIN_SERVER_CONF="gremlin-server-preload.yaml"
+    EXAMPLE_SCRPIT="example-preload.groovy"
+    cp "${CONF}"/gremlin-server.yaml "${CONF}/${GREMLIN_SERVER_CONF}"
+    cp "${SCRIPTS}"/example.groovy "${SCRIPTS}/${EXAMPLE_SCRPIT}"
+    sed -i -e "s/empty-sample.groovy/$EXAMPLE_SCRPIT/g" "${CONF}/${GREMLIN_SERVER_CONF}"
+    sed -i -e '/registerRocksDB/d; /serverStarted/d' "${SCRIPTS}/${EXAMPLE_SCRPIT}"
+fi
+
 if [[ $DAEMON == "true" ]]; then
     echo "Starting HugeGraphServer in daemon mode..."
-    "${BIN}"/hugegraph-server.sh "${CONF}"/gremlin-server.yaml "${CONF}"/rest-server.properties \
+    "${BIN}"/hugegraph-server.sh "${CONF}/${GREMLIN_SERVER_CONF}" "${CONF}"/rest-server.properties \
     "${OPEN_SECURITY_CHECK}" "${USER_OPTION}" "${GC_OPTION}" >>"${LOGS}"/hugegraph-server.log 2>&1 &
 else
     echo "Starting HugeGraphServer in foreground mode..."
-    "${BIN}"/hugegraph-server.sh "${CONF}"/gremlin-server.yaml "${CONF}"/rest-server.properties \
+    "${BIN}"/hugegraph-server.sh "${CONF}/${GREMLIN_SERVER_CONF}" "${CONF}"/rest-server.properties \
     "${OPEN_SECURITY_CHECK}" "${USER_OPTION}" "${GC_OPTION}" >>"${LOGS}"/hugegraph-server.log 2>&1
 fi