signal_pgo

gleam add signal_pgo

This is a persistance layer for the signal event sourcing library, on application startup, it will run migrations to set up an events table, and then it will be able to store and load events from signal. To configure it, you need to provide a gleam_pgo config, as well as an encoder and decoder for your events.

The encoding and decoding is done to a String, because event data is stored as a TEXT field in postgres. This also allows for maximum flexibility, allowing you to control exactly how data is stored.

This flexibility lets you implement things like encryption, or avoid the performance overhead of JSON parsing.

Usage

Set up a local database:

docker run --name your-db-name -e POSTGRES_USER=postgres -e POSTGRES_PASSWORD=postgres -p 5500:5432 -d postgres

Set up the persistance layer:

import signal
import signal_pgo

pub fn main() {

  let event_encoder = my_event_encoder
  let event_decoder = my_event_decoder

  // TODO: An example of the project in use
  ...

Set up the persistance layer:

  ...

  let event_encoder = my_event_encoder
  let event_decoder = my_event_decoder

  // TODO: An example of the project in use
  ...

Plug it into your signal instance:

  ...

  // TODO: An example of the project in use
}