Enable remote debugging with ptvsd (#3419)

* open port 3000 for remote debugging

* add ptvsd

* use port 5678 to avoid changes in VSCode's default config

* attach to ptvsd

* no need to wait for attach

* actually, --debugger seems to be working

* create a new docker entry point for remote debugging

* alternative method to switch to debugging

bin/docker-entrypoint

@@ -39,6 +39,7 @@ help() {
   echo ""
   echo "shell -- open shell"
   echo "dev_server -- start Flask development server with debugger and auto reload"
+  echo "debug -- start Flask development server with remote debugger via ptvsd"
   echo "create_db -- create database tables"
   echo "manage -- CLI to manage redash"
   echo "tests -- run tests"
@@ -72,6 +73,11 @@ case "$1" in
     export FLASK_DEBUG=1
     exec /app/manage.py runserver --debugger --reload -h 0.0.0.0
     ;;
+  debug)
+    export FLASK_DEBUG=1
+    export REMOTE_DEBUG=1
+    exec /app/manage.py runserver --debugger --no-reload -h 0.0.0.0
+    ;;
   shell)
     exec /app/manage.py shell
     ;;

docker-compose.yml

@@ -10,6 +10,7 @@ services:
       - redis
     ports:
       - "5000:5000"
+      - "5678:5678"
     volumes:
       - ".:/app"
     environment:

redash/__init__.py

@@ -22,6 +22,12 @@ from redash.destinations import import_destinations
 __version__ = '6.0.0'
 
 
+import os
+if os.environ.get("REMOTE_DEBUG"):
+    import ptvsd
+    ptvsd.enable_attach(address=('0.0.0.0', 5678))
+
+
 def setup_logging():
     handler = logging.StreamHandler(sys.stdout if settings.LOG_STDOUT else sys.stderr)
     formatter = logging.Formatter(settings.LOG_FORMAT)

requirements_dev.txt

@@ -8,3 +8,4 @@ mock==2.0.0
 pymongo[tls,srv]==3.6.1
 botocore==1.12.85
 PyAthena>=1.0.0
+ptvsd==4.2.3