Fix flake8 errors

.pre-commit-config.yaml

@@ -0,0 +1,6 @@
+repos:
+-   repo: https://github.com/PyCQA/flake8
+    rev: 3.9.2
+    hooks:
+    -   id: flake8
+        additional_dependencies: [flake8-typing-imports==1.10.0,flake8-quotes==3.2.0]

README.md

@@ -0,0 +1,6 @@
+To run locally with suitable `KUBECONFIG`:
+
+```
+MY_POD_NAMESPACE=camtiler ./camera-operator.py
+```
+

camera-operator.py

@@ -6,13 +6,11 @@ import yaml
 from base64 import b64decode
 from kubernetes_asyncio.client.api_client import ApiClient
 from kubernetes_asyncio import client, config, watch
-from os import path
 from time import time
 from urllib.parse import urlparse
 import useful.logs
 
-useful.logs.setup(
-  json_fields={"msg":"message", "level": "levelname"})
+useful.logs.setup(json_fields={"msg": "message", "level": "levelname"})
 logger = logging.getLogger()
 
 NAMESPACE = os.environ["MY_POD_NAMESPACE"]
@@ -23,6 +21,7 @@ with open("camera-service.yml") as stream:
 with open("camera-deployment.yml") as stream:
     DEPLOYMENT_BODY = stream.read()
 
+
 async def apply_changes(item, v1, now, apps_api):
     target = item["spec"]["target"]
     replicas = item["spec"].get("replicas")
@@ -44,32 +43,28 @@ async def apply_changes(item, v1, now, apps_api):
 
     # Generate Deployment
     body = yaml.safe_load(DEPLOYMENT_BODY.replace("foobar", name))
-    body["metadata"]["labels"] ["app.kubernetes.io/managed-by"] = LABEL_MANAGED_BY
-    body["metadata"]["labels"] ["modified"] = now
+    body["metadata"]["labels"]["app.kubernetes.io/managed-by"] = LABEL_MANAGED_BY
+    body["metadata"]["labels"]["modified"] = now
     body["spec"]["template"]["spec"]["containers"][0]["args"] = [target]
 
     if replicas:
         body["spec"]["replicas"] = replicas
     try:
-        await apps_api.replace_namespaced_deployment(
-            name = name, body = body, namespace=NAMESPACE)
+        await apps_api.replace_namespaced_deployment(name, NAMESPACE, body)
         logger.debug("Updated deployment %s/%s", NAMESPACE, name)
-    except client.exceptions.ApiException as e:
-        await apps_api.create_namespaced_deployment(
-            body = body, namespace=NAMESPACE)
+    except client.exceptions.ApiException:
+        await apps_api.create_namespaced_deployment(NAMESPACE, body)
         logger.debug("Created deployment %s/%s", NAMESPACE, name)
 
     # Generate Service
     body = yaml.safe_load(SERVICE_BODY.replace("foobar", name))
-    body["metadata"]["labels"] ["app.kubernetes.io/managed-by"] = LABEL_MANAGED_BY
-    body["metadata"]["labels"] ["modified"] = now
+    body["metadata"]["labels"]["app.kubernetes.io/managed-by"] = LABEL_MANAGED_BY
+    body["metadata"]["labels"]["modified"] = now
     try:
-        await v1.replace_namespaced_service(
-            name = name, body = body, namespace=NAMESPACE)
+        await v1.replace_namespaced_service(name, NAMESPACE, body)
         logger.debug("Updated service %s/%s", NAMESPACE, name)
-    except client.exceptions.ApiException as e:
-        await v1.create_namespaced_service(
-            body = body, namespace=NAMESPACE)
+    except client.exceptions.ApiException:
+        await v1.create_namespaced_service(NAMESPACE, body)
         logger.debug("Created service %s/%s", NAMESPACE, name)
 
 
@@ -123,20 +118,19 @@ async def main():
                 name = "camera-%s" % event["object"]["metadata"]["name"]
                 try:
                     await v1.delete_namespaced_service(name, NAMESPACE)
-            except client.exceptions.ApiException as e:
+                except client.exceptions.ApiException:
                     pass
                 else:
                     logger.debug("Removed service: %s/%s", NAMESPACE, name)
                 try:
                     await apps_api.delete_namespaced_deployment(name, NAMESPACE)
-            except client.exceptions.ApiException as e:
+                except client.exceptions.ApiException:
                     pass
                 else:
                     logger.debug("Removed deployment: %s/%s", NAMESPACE, name)
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     loop = asyncio.new_event_loop()
     loop.run_until_complete(main())
     loop.close()
-