110 lines
3.9 KiB
Nix
110 lines
3.9 KiB
Nix
{ pkgs, lib, inputs, config, ... }:
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let
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admin_dbPasswordFile = lib.optionalString (lib.hasAttr "sops-nix" inputs) config.sops.secrets."software/postgres/admin_db/password".path;
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in
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{
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sops.secrets = {
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"software/postgres/admin_db/password" = { };
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};
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virtualisation.arion = {
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backend = "docker";
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projects = {
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"db".settings.services."db".service = {
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restart = "unless-stopped";
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build.context = "/nix/store";
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build.dockerfile = builtins.baseNameOf "${pkgs.writeScript "pgDockerfile" ''
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FROM postgres:16
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# install packages
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RUN apt-get update \
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&& apt-get install -y --no-install-recommends \
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postgresql-16-postgis \
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jq \
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&& rm -rf /var/lib/apt/lists/*
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''}";
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environment = {
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POSTGRES_PASSWORD_FILE = admin_dbPasswordFile;
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POSTGRES_USER = "admin";
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POSTGRES_DB = "admin_db";
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PGDATA = "/var/lib/postgresql/data/pgdata";
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POSTGRES_MULTIPLE_DATABASES = ''
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[
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{
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"osm": {
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"user": "gis",
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"extensions": [
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"hstore",
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"postgis"
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]
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},
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"bitcoin": {
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"user": "satoshi",
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"extensions": []
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},
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"btc_models": {
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"user": "dbt",
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"extensions": []
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},
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"dev_btc_models": {
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"user": "dbt",
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"extensions": []
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}
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"test": {
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"user": "test",
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"extensions": [hstore]
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}
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}
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]
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'';
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};
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ports = [ "5432:5432" ];
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volumes = [
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"/mnt/postgres:/var/lib/postgresql/data"
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# Need to mount secret file
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"${admin_dbPasswordFile}:${admin_dbPasswordFile}"
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# PG init script to parse json specified in POSTGRES_MULTIPLE_DATABASES
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# creates databases, users and installs extensions for each database.
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"${pkgs.writeScript "init.sh" ''
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#!/bin/bash
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function create_user_and_database() {
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local database=$1
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local user=$2
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local extensions=$3
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echo "### admin user: $POSTGRES_USER ###"
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echo " Creating database '$database'"
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echo " Creating user '$user'"
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psql -v --username "$POSTGRES_USER" -d "$POSTGRES_DB" <<-EOSQL
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CREATE USER $user;
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CREATE DATABASE $database;
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GRANT ALL PRIVILEGES ON DATABASE $database TO $user;
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EOSQL
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# Loop through extensions and create them
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for ext in $(echo "$extensions" | tr ',' ' '); do
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echo " - Installing extention $ext"
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psql -v --username "$POSTGRES_USER" -d "$database" -c "CREATE EXTENSION $ext;"
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done
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}
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if [ -n "$POSTGRES_MULTIPLE_DATABASES" ]; then
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# Parse the JSON string
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database_names=$(echo "$POSTGRES_MULTIPLE_DATABASES" | jq -r '.[0] | keys[]')
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echo "Multiple database creation requested: $(echo "$database_names" | tr "\n" " ")"
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# Loop through each database and create it
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for db_name in $database_names; do
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user=$(echo "$POSTGRES_MULTIPLE_DATABASES" | jq -r ".[0] | .''${db_name} | .user")
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extensions=$(echo "$POSTGRES_MULTIPLE_DATABASES" | jq -r ".[0] | .''${db_name} | .extensions | join(\",\")")
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create_user_and_database "$db_name" "$user" "$extensions"
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done
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fi
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''}:/docker-entrypoint-initdb.d/init.sh"
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];
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};
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};
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};
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}
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