Replaced flow_refresh.sh w flow_refresh.py script (#239)

* Replaced flow_refresh.sh w flow_refresh.py script

Signed-off-by: Henrich Hubbe <h.hubbe@ndr.de>

* Update Chart.yaml

---------

Signed-off-by: Henrich Hubbe <h.hubbe@ndr.de>
Co-authored-by: Henrich Hubbe <h.hubbe@ndr.de>
Co-authored-by: Engin Diri <engin.diri@ediri.de>
Signed-off-by: Engin Diri <engin.diri@ediri.de>

charts/node-red/Chart.yaml

@@ -9,7 +9,7 @@ icon: https://nodered.org/about/resources/media/node-red-icon-2.png
 
 type: application
 
-version: 0.23.2
+version: 0.24.0
 appVersion: 3.0.2
 
 keywords:
@@ -29,7 +29,7 @@ maintainers:
 annotations:
   artifacthub.io/containsSecurityUpdates: "false"
   artifacthub.io/changes: |
-    - update quay.io/kiwigrid/k8s-sidecar to 1.24.0
+    - change flow_refresh.sh to flow_refresh.py, this is a breaking change.
   artifacthub.io/images: |
     - name: node-red
       image: docker.io/nodered/node-red:3.0.2

charts/node-red/scripts/flow_refresh.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python
+
+import time
+import os
+import requests
+import json
+import sys
+import re
+
+# SET VARIABLES FROM CONTAINER ENVIRONMENT
+SLEEP_TIME_SIDECAR = 5 if os.getenv("SLEEP_TIME_SIDECAR") is None else int(re.sub('[A-z]', "",os.getenv("SLEEP_TIME_SIDECAR")))
+USERNAME = os.getenv("USERNAME")
+PASSWORD = os.getenv("PASSWORD")
+URL = os.getenv("URL")
+
+print('node-red flow refresh api call via k8s-sidecar')
+print('sidecar sleeping for', SLEEP_TIME_SIDECAR, 'seconds...')
+time.sleep(SLEEP_TIME_SIDECAR)
+
+# GET NODE RED BEARER TOKEN
+PAYLOAD_TOKEN = {"client_id": "node-red-admin", "grant_type": "password", "scope": "*", "username": USERNAME, "password": PASSWORD}
+r_token = requests.post(URL + '/auth/token', data=PAYLOAD_TOKEN, timeout=30)
+if r_token.status_code == requests.codes.ok:
+    print('node-red bearer token successfully created -', r_token.status_code)  
+    token = (json.loads(r_token.text)["access_token"])
+else:
+    print('could not create bearer token....', r_token.status_code) 
+    sys.exit('Error-Code -', r_token.status_code)
+
+# FLOW REFRESH/RELOAD FLOWS FROM SECRET/CONFIGMAP
+PAYLOAD_FLOW_REFRESH = "{\"flows\": [{\"type\": \"tab\"}]}"
+HEADERS_FLOW_REFRESH={
+  'Authorization': 'Bearer' + ' ' + token,
+  'content-type': 'application/json; charset=utf-8',
+  'Node-RED-Deployment-Type': 'reload',
+  'Node-RED-API-Version': 'v2'
+}
+
+r_flow_refresh = requests.post(URL + '/flows', headers=HEADERS_FLOW_REFRESH, data=PAYLOAD_FLOW_REFRESH, timeout=30) 
+
+if r_flow_refresh.status_code == requests.codes.ok:
+    print('node-red flows successfully reloaded -', r_flow_refresh.status_code)
+    sys.exit(0)   
+else:
+    sys.exit('Error-Code', r_flow_refresh.status_code)

charts/node-red/templates/sidecar-cm.yaml

@@ -1,7 +1,7 @@
 {{- if .Values.sidecar.enabled }}
 apiVersion: v1
 data:
-  flow_refresh.sh: | {{ range $.Files.Lines "scripts/flow_refresh.sh" }}
+  flow_refresh.py: | {{ range $.Files.Lines "scripts/flow_refresh.py" }}
     {{ . }}{{ end }}
 kind: ConfigMap
 metadata:

charts/node-red/values.yaml

@@ -247,7 +247,7 @@ sidecar:
     # -- The value for the label you want to filter your resources on. Don't set a value to filter by any value
     label_value: "1"
     # -- Absolute path to shell script to execute after a configmap got reloaded.
-    script: flow_refresh.sh
+    script: flow_refresh.py
     # The username for the API Call, check node-red documentation for more information
     username: ""
     # -- Password as key value pair