Merge branch '4-provide-global-trigger-service-for-all-sessions' into 'master'

Resolve "Provide global trigger service (for all sessions)"

Closes #4

See merge request remotewebapp/session-service!4

1 files changed, 36 insertions, 0 deletions

diff --git a/trigger.py b/trigger.py
new file mode 100644
index 0000000..a7fb66c
--- /dev/null
+++ b/trigger.py
@@ -0,0 +1,36 @@
+import threading
+from typing import Any, Callable
+from wsgiref.simple_server import make_server
+
+import port_for
+from flask import Flask, abort, request
+
+
+class TriggerServerThread(threading.Thread):
+    """Simple Flask server (wrapped as thread) for triggering actions on sesssions."""
+
+    def __init__(self, trigger_method: Callable[[str], Any]):
+        super().__init__()
+        self.port = port_for.select_random()
+
+        app = Flask(__name__)
+
+        @app.route("/", methods=["POST"])
+        def trigger():
+            json = request.json
+            token = json.get("token", "")
+            r = trigger_method(token)
+            if r:
+                return "Successful triggered"
+            else:
+                return abort(403)
+
+        self.srv = make_server("127.0.0.1", self.port, app)
+        self.ctx = app.app_context()
+        self.ctx.push()
+
+    def run(self):
+        self.srv.serve_forever()
+
+    def shutdown(self):
+        self.srv.shutdown()