Use postgres as default session service

.env.TEMPLATE

@@ -58,3 +58,9 @@ FLAGEMBEDDING_CACHE_DIR="/opt/model_cache/"
 
 # Ollama API host, running on the host machine
 OLLAMA_API_BASE="http://localhost:11434"
+
+POSTGRES_USER="postgres"
+POSTGRES_PASSWORD=
+POSTGRES_HOST="db"
+POSTGRES_PORT="5432"
+POSTGRES_DB="manufold"

README.md

@@ -103,7 +103,7 @@ MANUGENAI_FIGURE_MODEL_NAME="ollama/gemma3:4b"
 Run the following command:
 
 ```bash
-docker compose up --build
+docker compose -f docker-compose.yml -f docker-compose.with-pg.yml -f docker-compose.override.yml up --build
 ```
 
 This will build the Docker images and start the application.
@@ -257,15 +257,15 @@ The production configuration differs from the development configuration in a few
 To launch the production version of the app, you can run the following command:
 
 ```bash
-docker compose -f docker-compose.yml -f docker-compose.prod.yml up --build -d
+docker compose -f docker-compose.yml -f docker-compose.with-pg.yml -f docker-compose.prod.yml up --build -d
 ```
 
 This will build the production images and start the application in detached mode.
 
 To tail the container logs, you can run:
 
 ```bash
-docker compose -f docker-compose.yml -f docker-compose.prod.yml logs -f
+docker compose -f docker-compose.yml -f docker-compose.with-pg.yml -f docker-compose.prod.yml logs -f
 ```
 
 - *For project members: [internal planning doc](https://olucdenver.sharepoint.com/:w:/r/sites/CenterforHealthAI939-SoftwareEngineering/Shared%20Documents/Software%20Engineering/Projects/PivLab%20-%20ADK%20Hackathon/Agent%20Development%20Kit%20Hackathon%20with%20Google%20Cloud.docx?d=w0cfff935f2754c3492489ef5b15fe2f4&csf=1&web=1&e=NRM3en)*

backend/pyproject.toml

@@ -9,6 +9,7 @@ classifiers = [
   "Programming Language :: Python :: 3.12",
 ]
 dependencies = [
+  "asyncpg>=0.31",
   "fastapi>=0.104",
   "manufold",
   "uvicorn[standard]>=0.24",

docker-compose.with-pg.yml

@@ -16,7 +16,7 @@ services:
   backend:
     environment:
       # yamllint disable-line rule:line-length
-      - "SESSION_DB_CONN_STRING=postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:${POSTGRES_PORT}/${POSTGRES_DB}"
+      - "SESSION_DB_CONN_STRING=postgresql+asyncpg://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:${POSTGRES_PORT}/${POSTGRES_DB}"
     depends_on:
       - db
 

run_stack.sh

@@ -0,0 +1,85 @@
+#!/usr/bin/env bash
+
+# this script manages compose configurations for different environments
+# and ensures the necessary environment variables are set up correctly.
+
+# invoke it like so:
+#
+# ./run_stack.sh [dev|prod] [docker-compose command options]
+#
+# - the first argument is the environment (default: dev) if the first arg isn't
+#   provided or doesn't match 'dev' or 'prod', it defaults to 'dev'.
+# - the remainder of the arguments are passed to the `docker compose` command.
+#   if no arguments are provided, it defaults to an environment-specific
+#   command, e.g. `docker compose up --build` for dev or `docker compose up
+#   --build -d` for prod.
+
+# ------------------------------------
+# --- preamble: .env file validation, sourcing
+# ------------------------------------
+
+# check if `.env` is present, and if not copy it from `.env.TEMPLATE`
+# and fill in passwords with random values
+if [ ! -f .env ]; then
+  echo ".env file not found, copying from .env.TEMPLATE"
+  cp .env.TEMPLATE .env
+fi
+
+# ensure a value for the postgres db's password exists, and if not, generate a random one
+RANDOM_PG_PASSWORD=$(openssl rand -base64 32 | tr -d '/=')
+perl -i -pe"s/^POSTGRES_PASSWORD=$/POSTGRES_PASSWORD=\"${RANDOM_PG_PASSWORD}\"/g" .env
+
+# source the .env file and export its contents to the environment
+set -a
+source .env
+set +a
+
+# ------------------------------------
+# --- environment resolution
+# ------------------------------------
+
+# sets the default environment to 'dev' if not specified via DEFAULT_ENV
+DEFAULT_ENV=${DEFAULT_ENV:-dev}
+# defaults to a no-op command to run after docker compose
+POST_COMMAND=":"
+
+if [ -z "$1" ] || [[ ! "$1" =~ ^(dev|prod)$ ]]; then
+  echo "No environment specified, using default: $DEFAULT_ENV"
+  export ENV=$DEFAULT_ENV
+else
+  # use the first argument as the environment
+  export ENV="$1"; shift
+  echo "Using specified environment: $ENV"
+fi
+
+# set up compose files and commands based on the environment
+case $ENV in
+  dev)
+    COMPOSE_FILES="-f docker-compose.yml -f docker-compose.override.yml"
+    COMPOSE_CMD="up --build"
+    ;;
+  prod)
+    COMPOSE_FILES="-f docker-compose.yml -f docker-compose.with-pg.yml -f docker-compose.prod.yml"
+    COMPOSE_CMD="up --build -d"
+    # tail all container logs in production
+    POST_COMMAND="docker compose ${COMPOSE_FILES} logs -f"
+    ;;
+  *)
+    echo "Unknown environment: $ENV, aborting"
+    exit 1
+    ;;
+esac
+
+
+# ------------------------------------
+# --- execute docker compose command
+# ------------------------------------
+
+# if we have any remaining arguments, override the compose command with them
+if [ $# -gt 0 ]; then
+  echo "Overriding compose command with: $@"
+  COMPOSE_CMD="$@"
+fi
+
+docker compose ${COMPOSE_FILES} ${COMPOSE_CMD} && \
+${POST_COMMAND}