Unleash

backend/main.py

@@ -1,11 +1,30 @@
 from fastapi import FastAPI, Query
+from UnleashClient import UnleashClient
+from UnleashClient.cache import FileCache
+from pathlib import Path
 
+cache = FileCache("BootstrappedCache")
+cache.bootstrap_from_file(Path("/app/flags.json"))
+client = UnleashClient(
+    url="http://host.docker.internal:4242/api/",
+    app_name="playground",
+    custom_headers={'Authorization': 'default:development.064b6f40e22f2f55a716667bf736ad2185a0831dded7a1de99ac33ac'},
+    cache=cache,
+    request_timeout=3,
+    request_retries=0)
+
+client.initialize_client()
 
 app = FastAPI()
 
 @app.get("/{id}")
 def read_root(id: int, language: str | None = Query(None)):
+    app_context = {
+        "id": str(id),
+        "language": language
+    }
+
     return {
-        "feature_enabled": False,
+        "feature_enabled": client.is_enabled("my_cool_feature", app_context),
         "ab_test_flag": False
     }

docker-compose.yml

@@ -9,4 +9,6 @@ services:
     ports:
       - "8000:8000"
     volumes:
-      - .:/app
+      - .:/app
+    extra_hosts:
+      - "host.docker.internal:host-gateway"

flags.json

@@ -0,0 +1 @@
+{"version":2,"features":[{"name":"my_cool_feature","type":"release","enabled":true,"project":"default","stale":false,"strategies":[{"name":"flexibleRollout","constraints":[{"values":["pt"],"inverted":false,"operator":"IN","contextName":"language","caseInsensitive":false}],"parameters":{"groupId":"my_cool_feature","rollout":"100","stickiness":"id"},"variants":[]}],"variants":[],"description":null,"impressionData":false}],"query":{"project":["default"],"environment":"development","inlineSegmentConstraints":true},"meta":{"revisionId":23,"etag":"\"6ef7ec5a:23\"","queryHash":"6ef7ec5a"}}

requirements.txt

@@ -1,2 +1,3 @@
 fastapi
 uvicorn
+UnleashClient