AppFlowy/backend/doc/database_setup.md

Docker

1. follow the instructions to install docker.

2. open terminal and run: docker pull postgres

3. run make init_postgres if you have not run before. You can find out the running container by run docker ps

CONTAINER ID   IMAGE      COMMAND                  CREATED          STATUS          PORTS                                       NAMES
bfcdd6369e89   postgres   "docker-entrypoint.s…"   19 minutes ago   Up 19 minutes   0.0.0.0:5432->5432/tcp, :::5432->5432/tcp   brave_bassi

4. run make init_database. It will create the database scheme on remote specified by DATABASE_URL. You can connect you database using pgAdmin.

The information you enter must be the same as the make init_postgres. e.g.

export DB_USER=postgres
export DB_PASSWORD=password
export DB_NAME=flowy
export DB_PORT=5432

Docker command

Run

By default, Docker images do not expose their ports to the underlying host machine. We need to do it explicitly using the -p flag. docker run -p 8000:8000 backend

Sqlx

sqlx-cli

• install sqlx-cli

Sqlx and Diesel commands

• create migration

  • sqlx: sqlx migrate add $(table)
  • diesel: diesel migration generation $(table)

• run migration

  • sqlx: sqlx migrate run
  • diesel: diesel migration run

• reset database

  • sqlx: sqlx database reset
  • diesel: diesel database reset

offline mode

cargo sqlx prepare -- --bin backend

Type mapping

• postgres type map
• postgres and diesel type map

Q&A

1. Receive { code: 24, kind: Other, message: "Too many open files" } on arbiter after running cargo test on backend.

This is due to a limit enforced by the operating system on the maximum number of open file descriptors (including sockets) for each process. Raising the file descriptor limit using ulimit -n 2048 to solve this issue. It won't stay after reboot so check on google how to persist that value if you want to.

or you can try: launchctl limit maxfiles 2048 2048 launchctl limit maxfiles

Don't forget to relaunch your terminal.

More

• 11-database-drivers