dev_env.sh

#!/usr/bin/env bash

# This script setups the dev environment needed for testing and compiling the
# application. It is composed of a single instance of PostgreSQL running in a
# Docker container. This script also runs the needed migrations.

# Highly inspired by https://github.com/LukeMathWalker/zero-to-production

# Usage:
# Just run `./scripts/dev_env.sh`
# Additionally you can pass the `SKIP_DOCKER=true` environment variable
# if the Postgres instance is already running.

set -x
set -eo pipefail

if ! [ -x "$(command -v psql)" ]; then
  echo >&2 "Error: `psql` is not installed."
  exit 1
fi

if ! [ -x "$(command -v sqlx)" ]; then
  echo >&2 "Error: `sqlx` is not installed."
  echo >&2 "Use:"
  echo >&2 "    cargo install sqlx-cli --no-default-features --features postgres"
  echo >&2 "to install it."
  exit 1
fi

DB_USER=${POSTGRES_USER:=postgres}
DB_PASSWORD="${POSTGRES_PASSWORD:=password}"
DB_NAME="${POSTGRES_DB:=conduit}"
DB_PORT="${POSTGRES_PORT:=5432}"

# Allow to skip Docker if a dockerized Postgres database is already running
if [[ -z "${SKIP_DOCKER}" ]]
then
  docker run \
      -e POSTGRES_USER=${DB_USER} \
      -e POSTGRES_PASSWORD=${DB_PASSWORD} \
      -e POSTGRES_DB=${DB_NAME} \
      -p "${DB_PORT}":5432 \
      -d postgres:14 \
      postgres -N 1000
fi

until PGPASSWORD="${DB_PASSWORD}" psql -h "localhost" -U "${DB_USER}" -p "${DB_PORT}" -d "postgres" -c '\q'; do
  >&2 echo "Postgres is still unavailable - sleeping"
  sleep 1
done

>&2 echo "Postgres is up and running on port ${DB_PORT} - running migrations now!"

export DATABASE_URL=postgres://${DB_USER}:${DB_PASSWORD}@localhost:${DB_PORT}/${DB_NAME}
sqlx database create
sqlx migrate run

>&2 echo "Postgres has been migrated, ready to go!"