Implemented auto commit new app version to GitOps by pipeline

.jenkins/Jenkinsfile

@@ -0,0 +1,73 @@
+pipeline {
+    agent {
+        kubernetes {
+            yamlFile '.jenkins/podTemplate.yaml'
+        }
+    }
+
+    environment {
+        ACR_NAME = 'marcin00'
+        CLIENT_ID = 'c302726f-fafb-4143-94c1-67a70975574a'
+        DOCKER_REGISTRY_URL = 'marcin00.azurecr.io'
+        DOCKER_IMAGE = "${DOCKER_REGISTRY_URL}/user-microservice:${GIT_COMMIT}"
+    }
+
+    stages {
+        stage('Code Tests') {
+            steps {
+                container('python') {
+                    dir('api') {
+                        sh '''
+                            python3 -m venv env
+                            source env/bin/activate
+                            pip install -r requirements.txt pytest
+                            python3 -m pytest --junit-xml=pytest_junit.xml
+                        '''
+                    }
+                }
+            }
+            post {
+                always {
+                    junit testResults: '**/*pytest_junit.xml'
+                }
+            }
+        }
+
+        stage('Build & Push Docker') {
+            steps {
+                container('docker') {
+                    sh '''
+                        docker build -t ${DOCKER_IMAGE} .
+                        az login --identity --client-id ${CLIENT_ID}
+                        az acr login --name ${ACR_NAME}
+                        docker push ${DOCKER_IMAGE}
+                    '''
+                }
+            }
+        }
+        stage('Commit new version to GitOps repo') {
+            steps {
+                container('git') {
+                    sh '''
+                        git config --global user.name "jenkins[bot]"
+                        git config --global user.email "jenkins@marcin00.pl"
+                    '''
+                    sh '''
+                        # Podmień tag obrazu w pliku deploy.yaml
+                        awk -v commit="$GIT_COMMIT" '
+                        $0 ~ /name:[[:space:]]*api/ { in_api_container = 1; print; next }
+                        in_api_container && $0 ~ /^[[:space:]]*image:[[:space:]]*/ {
+                            sub(/:[^:[:space:]]+$/, ":" commit)
+                            in_api_container = 0
+                            print
+                            next
+                        }
+                        { print }
+                        ' deploy.yaml > deploy.tmp && mv deploy.tmp deploy.yaml
+                    '''
+                    sh 'git commit -am "JENKINS: Changed deployed version to $GIT_COMMIT"'
+                }
+            }
+        }
+    }
+}

.jenkins/podTemplate.yaml

@@ -0,0 +1,58 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  annotations:
+    io.kubernetes.cri-o.userns-mode: "auto:size=65536"
+  labels:
+    jenkins: "slave"
+    jenkins/label: "kubernetes-agent"
+spec:
+  runtimeClassName: sysbox-runc
+  containers:
+    - name: jnlp
+      image: jenkins/inbound-agent:alpine
+      tty: false
+      workingDir: /home/jenkins/agent
+      volumeMounts:
+        - name: workspace-volume
+          mountPath: /home/jenkins/agent
+      env:
+        - name: JENKINS_WEB_SOCKET
+          value: "true"
+        - name: REMOTING_OPTS
+          value: "-noReconnectAfter 1d"
+
+    - name: python
+      image: python:3.11.7-alpine
+      command:
+        - cat
+      tty: true
+      workingDir: /home/jenkins/agent
+      volumeMounts:
+        - name: workspace-volume
+          mountPath: /home/jenkins/agent
+
+    - name: docker
+      image: marcin00.azurecr.io/azure-cli-docker:slim-bookworm
+      tty: true
+      workingDir: /home/jenkins/agent
+      volumeMounts:
+        - name: workspace-volume
+          mountPath: /home/jenkins/agent
+
+    - name: git
+      image: alpine/git:latest
+      tty: true
+      workingDir: /home/jenkins/agent
+      volumeMounts:
+        - name: workspace-volume
+          mountPath: /home/jenkins/agent
+
+  nodeSelector:
+    kubernetes.io/os: linux
+
+  restartPolicy: Never
+
+  volumes:
+    - name: workspace-volume
+      emptyDir: {}

Dockerfile

@@ -1,5 +1,6 @@
-FROM python:3.11.7-slim-bookworm
+FROM python:3.11.7-alpine
 WORKDIR /app
 COPY api .
+RUN apk add --no-cache curl
 RUN pip install -r requirements.txt
 CMD python3 app.py

api/app.py

@@ -4,6 +4,7 @@ from flask_jwt_extended import JWTManager
 from jwt import ExpiredSignatureError
 from models import db, RevokedToken
 import os
+from tech_views import tech_bp
 from utils import init_db, wait_for_db
 from views import user_bp
 from werkzeug.exceptions import HTTPException
@@ -26,6 +27,7 @@ def create_app(config_name="default"):
 
     # Blueprints registration
     app.register_blueprint(user_bp)
+    app.register_blueprint(tech_bp)
 
     # Database and JWT initialization
     db.init_app(app)
@@ -53,7 +55,7 @@ def create_app(config_name="default"):
 
     # Fill database by initial values (only if we are not testing)
     with app.app_context():
-        wait_for_db()
+        wait_for_db(max_retries=100)
         db.create_all()
         if config_name != "testing":
             init_db()

api/tech_views.py

@@ -0,0 +1,20 @@
+from flask import Blueprint, jsonify
+from models import db
+from sqlalchemy import text
+from utils import db_ready
+
+# Blueprint with technical endpoints
+tech_bp = Blueprint('tech_bp', __name__)
+
+@tech_bp.route('/health', methods=['GET'])
+def health_check():
+    "Check if service works and database is functional"
+    try:
+        with db.engine.connect() as connection:
+            connection.execute(text("SELECT 1"))
+        return jsonify(status="healthy"), 200
+    except Exception:
+        if db_ready:
+            return jsonify(status="unhealthy"), 500
+        else:
+            return jsonify(status="starting"), 503

api/utils.py

@@ -3,19 +3,21 @@ from flask_jwt_extended import get_jwt_identity
 from models import User, db
 import os
 from sqlalchemy import text
-from sqlalchemy.exc import DatabaseError
+from sqlalchemy.exc import DatabaseError, InterfaceError
 import time
 from werkzeug.security import generate_password_hash
 
+db_ready = False
 
 def admin_required(user_id, message='Access denied.'):
+    "Check if common user try to make administrative action."
     user = db.session.get(User, user_id)
     if user is None or user.role != "Administrator":
         abort(403, message)
 
 
 def validate_access(owner_id, message='Access denied.'):
-    # Check if user try to access or edit resource that does not belong to them 
+    "Check if user try to access or edit resource that does not belong to them."
     logged_user_id = int(get_jwt_identity())
     logged_user_role = db.session.get(User, logged_user_id).role
     if logged_user_role != "Administrator" and logged_user_id != owner_id:
@@ -30,20 +32,18 @@ def get_user_or_404(user_id):
     return user
 
 
-MAX_RETRIES = 100
+def wait_for_db(max_retries):
-
+    "Try to connect with database <max_retries> times."
-def wait_for_db():
+    global db_ready
-    for retries in range(MAX_RETRIES):
+    for _ in range(max_retries):
         try:
             with db.engine.connect() as connection:
                 connection.execute(text("SELECT 1"))
-            print("Successfully connected with database.")
+            db_ready = True
             return
-        except DatabaseError:
+        except DatabaseError | InterfaceError:
-            print(f"Waiting for database... (retry {retries + 1})")
             time.sleep(3)
-    print("Failed to connect to database.")
+    raise Exception("Failed to connect to database.")
-    raise Exception("Database not ready after multiple retries.")
 
 
 def init_db():

api/views.py

@@ -2,6 +2,7 @@ from flask import Blueprint, jsonify, request, abort
 from flask_jwt_extended import create_access_token, set_access_cookies, jwt_required, \
 verify_jwt_in_request, get_jwt_identity, unset_jwt_cookies, get_jwt
 from models import db, RevokedToken, User
+import os
 from utils import admin_required, validate_access, get_user_or_404
 from werkzeug.security import check_password_hash, generate_password_hash
 
@@ -110,3 +111,10 @@ def user_logout():
     response = jsonify({"msg": "User logged out successfully."})
     unset_jwt_cookies(response)
     return response
+
+@user_bp.route('/version', methods=['GET'])
+def version():
+    return jsonify({
+        "version": os.getenv("APP_VERSION", "unknown"),
+        "build_time": os.getenv("BUILD_DATE", "unknown")
+    })

docker-compose.yml

@@ -7,9 +7,24 @@ services:
     build: .
     env_file:
       - api/.env
+    ports:
+      - 80:80
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost/health"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 15s
   db:
     container_name: db
     hostname: db
     image: mysql:latest
     env_file:
       - db/.env
+    ports:
+      - 3306:3306
+    healthcheck:
+      test: ["CMD", "mysqladmin", "ping", "-h", "localhost"]
+      interval: 10s
+      timeout: 5s
+      retries: 5