Switch to gunicorn

Author: manisandro

Dockerfile

@@ -1,10 +1,22 @@
-FROM sourcepole/qwc-uwsgi-base:alpine-v2025.01.24
+FROM alpine:3.21
+
+ENV SERVICE_UID=33
+ENV SERVICE_GID=33
+# http://uwsgi-docs.readthedocs.io/en/latest/Options.html#buffer-size
+ENV UWSGI_PROCESSES=1
+ENV UWSGI_THREADS=4
+ENV PGSERVICEFILE="/srv/pg_service.conf"
+
+STOPSIGNAL SIGINT
 
 WORKDIR /srv/qwc_service
 ADD pyproject.toml uv.lock ./
 ADD libs.txt /srv/qwc_service/libs.txt
 
+COPY --from=ghcr.io/astral-sh/uv:alpine3.20 /usr/local/bin/uv /usr/local/bin/uvx /bin/
+
 RUN \
+    apk add --no-cache --update shadow python3 py3-pip py3-gunicorn && \
     apk add --no-cache --update --virtual runtime-deps postgresql-libs openjdk21-jdk openjdk21-jre ttf-dejavu && \
     apk add --no-cache --update --virtual build-deps postgresql-dev g++ python3-dev && \
     uv sync --frozen && \
@@ -18,5 +30,14 @@ ADD src /srv/qwc_service/
 
 ENV LD_LIBRARY_PATH=/usr/lib/jvm/java-21-openjdk/lib/server
 ENV SERVICE_MOUNTPOINT=/api/v1/document
-# Respawn service after each request
-ENV UWSGI_EXTRA="--master --processes 1 --threads 1 --max-requests 1"
+
+ENTRYPOINT ["/bin/sh", "-c", "\
+    HOME=/tmp gunicorn --chdir /srv/qwc_service \
+    --bind :9090 \
+    --workers $UWSGI_PROCESSES \
+    --threads $UWSGI_THREADS \
+    --user $SERVICE_UID --group $SERVICE_GID \
+    --worker-class gthread \
+    --pythonpath /srv/qwc_service/.venv/lib/python*/site-packages \
+    --access-logfile - \
+    server:app"]

src/server.py

@@ -7,7 +7,7 @@
 import tempfile
 import traceback
 
-from flask import Flask, Response, request, jsonify, make_response
+from flask import Flask, Response, request, jsonify, make_response, Blueprint
 from flask_restx import Api, Resource
 
 from qwc_services_core.app import app_nocache
@@ -21,8 +21,10 @@
 
 # Flask application
 app = Flask(__name__)
+mounted_app = Blueprint('mounted_app', __name__, url_prefix=os.getenv('SERVICE_MOUNTPOINT', '/'))
+
 app_nocache(app)
-api = Api(app, version='1.0', title='Document service API',
+api = Api(mounted_app, version='1.0', title='Document service API',
           description="""API for QWC Document service.
 
 The document service delivers reports from the Jasper reporting service.
@@ -33,6 +35,8 @@
 # disable verbose 404 error message
 app.config['ERROR_404_HELP'] = False
 
+app.register_blueprint(mounted_app)
+
 auth = auth_manager(app, api)
 
 tenant_handler = TenantHandler(app.logger)