lab 12 part2

app_python/README.md

@@ -122,5 +122,8 @@ Sets up Docker service.
 Builds a Docker image tagged as DOCKER_USERNAME/app_python:latest. - utilising GitHub Secrets
 Pushes the Docker image to Docker Hub using secrets for authentication.
 
-All steps are chained with needs:
+## Compose:
 
+docker-compose build
+
+docker-compose up

app_python/app.py

@@ -1,13 +1,23 @@
 from flask import Flask
 from datetime import datetime
 import pytz
+import os
 
 app = Flask(__name__)
 
 # In-memory storage for metric data
 view_metric = {}
 buy_metric = {}
 
+# File to store the visit counter
+VISIT_FILE = 'visits/visits.txt'
+
+# Initialize the counter from the file (if it exists)
+counter = 0
+if os.path.exists(VISIT_FILE):
+    with open(VISIT_FILE, 'r') as file:
+        counter = int(file.read().strip())
+
 
 # Function to get Moscow time in seconds since epoch
 def get_moscow_time_seconds():
@@ -16,11 +26,20 @@ def get_moscow_time_seconds():
     return int(moscow_time.timestamp())
 
 
+# Update the visit counter and save it to the file
+def update_visit_count():
+    global counter
+    counter += 1
+    with open(VISIT_FILE, 'w') as file:
+        file.write(str(counter))
+
+
 # Root route to display Moscow time
 @app.route('/')
 def show_time():
     moscow_time = datetime.fromtimestamp(get_moscow_time_seconds())
     formatted_time = moscow_time.strftime('%Y-%m-%d %H:%M:%S')
+    update_visit_count()  # Increment visit counter on each access
     return f"<h1>Moscow Time: {formatted_time}</h1>"
 
 
@@ -41,5 +60,15 @@ def metrics():
     return metrics_output, 200, {'Content-Type': 'text/plain'}
 
 
+# Visits route to display the visit count
+@app.route('/visits')
+def visits():
+    return f'Number of accessed times: {counter}'
+
+
 if __name__ == '__main__':
-    app.run(debug=True, host='0.0.0.0', port=8080)
+    # Ensure the visits directory exists
+    if not os.path.exists('visits'):
+        os.makedirs('visits')
+
+    app.run(debug=True, host='0.0.0.0', port=8080)

app_python/docker-compose.yml

@@ -0,0 +1,9 @@
+version: '3'
+
+services:
+  app_python:
+    build: .
+    ports:
+      - "8080:8080"
+    volumes:
+      - ./visits:/app/visits

app_python/visits/visits.txt

@@ -0,0 +1 @@
+6

k8s/12.md

@@ -0,0 +1,8 @@
+# Part 2
+```bash
+(venv) smasiner@smasIners-MacBook-Pro k8s % kubectl get po                                           
+NAME                      READY   STATUS    RESTARTS   AGE
+helmapp-7dfd8bd68-lp6m2   1/1     Running   0          113s
+(venv) smasiner@smasIners-MacBook-Pro k8s % kubectl exec helmapp-7dfd8bd68-lp6m2  -- cat /config.json
+{"abra" : "kadabra"}% 
+```

k8s/helmapp/files/config.json

@@ -0,0 +1 @@
+{"abra" : "kadabra"}

k8s/helmapp/templates/configmap.yaml

@@ -0,0 +1,7 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: config-configmap
+data:
+  config.json: |-
+{{ .Files.Get "files/config.json" | indent 4}}

k8s/helmapp/templates/deployment.yaml

@@ -50,6 +50,9 @@ spec:
           volumeMounts:
             {{- toYaml . | nindent 12 }}
           {{- end }}
+          envFrom:
+            - configMapRef:
+                name: env-configmap
           env:
             - name: MY_PASS
               valueFrom:

k8s/helmapp/templates/envconfig.yaml

@@ -0,0 +1,6 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: env-configmap
+data:
+  MY_SECRET: "a"

k8s/helmapp/values.yaml

@@ -111,14 +111,24 @@ autoscaling:
   # targetMemoryUtilizationPercentage: 80
 
 # Additional volumes on the output Deployment definition.
-volumes: []
+volumes:
+  - name: config
+    configMap:
+      name: config-configmap
 # - name: foo
 #   secret:
 #     secretName: mysecret
 #     optional: false
+
 mySecret: "abraabra"
+
 # Additional volumeMounts on the output Deployment definition.
-volumeMounts: []
+volumeMounts:
+  - name: config
+    mountPath: "/config.json"
+    subPath: config.json
+    readOnly: true
+
 # - name: foo
 #   mountPath: "/etc/foo"
 #   readOnly: true