Initialize

Running with Docker

1. Create a new directory and enter into the folder

   mkdir ~/wren-engine
   cd ~/wren-engine

2. Make a file named docker-compose.yml then put below content into the file.

   version: '3.8'
   
   services:
     engine:
       image: ghcr.io/canner/wren-engine:latest
       platform: linux/amd64 # follow up your platform. (linux/amd64 or linux/arm64)(M1, M2, M3 is arm64)
       ports:
         - 8080:8080
         - 7432:7432
       volumes:
         - ./etc:/usr/src/app/etc
       environment:
         - SQLGLOT_PORT=8000

3. Create a folder etc and enter the folder.

   mkdir etc
   cd etc

4. Create config.properties put into etc

   node.environment=production
   wren.directory=/usr/src/app/etc/mdl
   pg-wire-protocol.auth.file=/usr/src/app/etc/accounts
   wren.datasource.type=duckdb

   We support many data source type, you can check out the Overview to get the idea.

5. Create a file accounts put it into etc too

   howard pxd123

6. Create a folder mdl and a file mdl.json and store the file in the folder, the path looks as etc/mdl/mdl.json

   {
     "catalog": "wren",
     "schema": "tpch",
     "models": [
       {
         "name": "Orders",
         "tableReference": {
           "catalog": "memory",
           "schema": "tpch",
           "table": "orders"
         },
         "columns": [
           {
             "name": "orderkey",
             "expression": "o_orderkey",
             "type": "integer"
           },
           {
             "name": "custkey",
             "expression": "o_custkey",
             "type": "integer"
           }
         ],
         "primaryKey": "orderkey"
       }
     ]
   }

   More about Modeling Definition Language

Running with JAR

• Requirements:
  • Java 21+

1. Download the jar from the GitHub release(TBD: URL) and rename it to wren-server-executable.jar

2. Create a new directory and move the Wren Engine JAR into it

   mkdir ~/wren-engine

   then

   mv ~/Downloads/wren-server-executable.jar ~/wren-engine

3. Go to the folder Wren Engine directory and prepare config files

   cd ~/wren-engine

4. Create a folder etc and enter it.

   mkdir etc
   cd etc

5. Create config.properties

   node.environment=production
   wren.directory=/usr/src/app/etc/mdl
   pg-wire-protocol.auth.file=/usr/src/app/etc/accounts
   wren.datasource.type=duckdb

   We support many data source type, you can check out the Overview to get the idea.

6. Create a file accounts

   howard pxd123

7. Create a folder mdl and a file mdl.json, and put it in the mdl folder, path as etc/mdl/mdl.json

   {
     "catalog": "wren",
     "schema": "tpch",
     "models": [
       {
         "name": "Orders",
         "tableReference": {
           "catalog": "memory",
           "schema": "tpch",
           "table": "orders"
         },
         "columns": [
           {
             "name": "orderkey",
             "expression": "o_orderkey",
             "type": "integer"
           },
           {
             "name": "custkey",
             "expression": "o_custkey",
             "type": "integer"
           }
         ],
         "primaryKey": "orderkey"
       }
     ]
   }

   More about Modeling Definition Language