feat: add `flask upgrade-db` command for running db upgrade with redis lock (#5333)

.github/workflows/db-migration-test.yml

       - name: Install dependencies
         run: poetry install -C api
 
-      - name: Set up Middleware
+      - name: Set up Middlewares
         uses: hoverkraft-tech/compose-action@v2.0.0
         with:
           compose-file: |
             docker/docker-compose.middleware.yaml
           services: |
             db
+            redis
 
       - name: Prepare configs
         run: |
       - name: Run DB Migration
         run: |
           cd api
-          poetry run python -m flask db upgrade
+          poetry run python -m flask upgrade-db

api/commands.py

 import base64
 import json
+import logging
 import secrets
 from typing import Optional
 
 from core.rag.datasource.vdb.vector_type import VectorType
 from core.rag.models.document import Document
 from extensions.ext_database import db
+from extensions.ext_redis import redis_client
 from libs.helper import email as email_validate
 from libs.password import hash_password, password_pattern, valid_password
 from libs.rsa import generate_key_pair
                            'Account: {}\nPassword: {}'.format(email, new_password), fg='green'))
 
 
+@click.command('upgrade-db', help='upgrade the database')
+def upgrade_db():
+    click.echo('Preparing database migration...')
+    lock = redis_client.lock(name='db_upgrade_lock', timeout=60)
+    if lock.acquire(blocking=False):
+        try:
+            click.echo(click.style('Start database migration.', fg='green'))
+
+            # run db migration
+            import flask_migrate
+            flask_migrate.upgrade()
+
+            click.echo(click.style('Database migration successful!', fg='green'))
+
+        except Exception as e:
+            logging.exception(f'Database migration failed, error: {e}')
+        finally:
+            lock.release()
+    else:
+        click.echo('Database migration skipped')
+
+
 def register_commands(app):
     app.cli.add_command(reset_password)
     app.cli.add_command(reset_email)
     app.cli.add_command(convert_to_agent_apps)
     app.cli.add_command(add_qdrant_doc_id_index)
     app.cli.add_command(create_tenant)
-
+    app.cli.add_command(upgrade_db)

api/docker/entrypoint.sh

 
 if [[ "${MIGRATION_ENABLED}" == "true" ]]; then
   echo "Running migrations"
-  flask db upgrade
+  flask upgrade-db
 fi
 
 if [[ "${MODE}" == "worker" ]]; then

api/migrations/README

 Single-database configuration for Flask.
-