wsgi support

README.md

@@ -118,6 +118,21 @@ docker-compose up -d --build
 | --require-api-key-origin | Require use of an API key for programmatic access to the API, unless the request origin matches this domain | `No restrictions on domain origin` |
 | --load-only   | Set available languages    | `all from argostranslate`    |
 
+## Run with Gunicorn
+
+```
+pip install gunicorn
+gunicorn --bind 0.0.0.0:5000 'wsgi:app'
+```
+
+You can pass application arguments directly to Gunicorn via:
+
+
+```
+gunicorn --bind 0.0.0.0:5000 'wsgi:app(api_keys=True)'
+```
+
+
 ## Manage API Keys
 
 LibreTranslate supports per-user limit quotas, e.g. you can issue API keys to users so that they can enjoy higher requests limits per minute (if you also set `--req-limit`). By default all users are rate-limited based on `--req-limit`, but passing an optional `api_key` parameter to the REST endpoints allows a user to enjoy higher request limits.

app/main.py

 import argparse
+import sys
 import operator
 
 from app.app import create_app
@@ -103,17 +104,20 @@ def main():
     args = parser.parse_args()
     app = create_app(args)
 
-    if args.debug:
-        app.run(host=args.host, port=args.port)
+    if sys.argv[0] == '--wsgi':
+        return app
     else:
-        from waitress import serve
+        if args.debug:
+            app.run(host=args.host, port=args.port)
+        else:
+            from waitress import serve
 
-        serve(
-            app,
-            host=args.host,
-            port=args.port,
-            url_scheme="https" if args.ssl else "http",
-        )
+            serve(
+                app,
+                host=args.host,
+                port=args.port,
+                url_scheme="https" if args.ssl else "http",
+            )
 
 
 if __name__ == "__main__":

wsgi.py

+from app import main
+
+def app(*args, **kwargs):
+    import sys
+    sys.argv = ['--wsgi']
+    for k in kwargs:
+        ck = k.replace("_", "-")
+        if isinstance(kwargs[k], bool) and kwargs[k]:
+            sys.argv.append("--" + ck)
+        else:
+            sys.argv.append("--" + ck)
+            sys.argv.append(kwargs[k])
+
+    instance = main()
+
+    if len(kwargs) == 0:
+        return instance(*args, **kwargs)
+    else:
+        return instance