Feature/69 kubernetes

Dockerfile

@@ -0,0 +1,15 @@
+FROM golang:1.22
+
+RUN curl -L https://github.com/golang-migrate/migrate/releases/download/v4.15.0/migrate.linux-amd64.tar.gz | tar xvz -C /usr/local/bin
+
+WORKDIR /usr/src/app
+
+COPY go.mod go.sum ./
+
+RUN go mod download && go mod verify
+
+COPY . .
+
+RUN go build -v -o /usr/local/bin/app ./cmd/...
+
+CMD ["app"]

Makefile

@@ -42,6 +42,15 @@ migrate-up:
 migrate-down:
 	migrate -database $(DB_URL) -path internal/database/postgres/migration down
 
+migrate-docker-down:
+	docker-compose run app migrate -path ./internal/database/postgres/migration -database "postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@postgres:5432/${POSTGRES_DB}?sslmode=disable" down
+
+migrate-docker-up:
+	docker-compose run app migrate -path ./internal/database/postgres/migration -database "postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@postgres:5432/${POSTGRES_DB}?sslmode=disable" up
+
+kube-forward-port:
+	kubectl port-forward services/booking-app-app 8080:8080
+
 migrate-up-test:
 	migrate -database $(DB_URL_TEST) -path internal/database/postgres/migration up
 

README.md

@@ -43,6 +43,17 @@ After initializing all the necessary dependencies, you can run project:
  go run cmd/main.go
  ```
 
+Use, if running on local machine:
+``` 
+POSTGRES_HOST=localhost
+REDIS_HOST=localhost
+```
+if  running on docker or kubernetes:
+```
+POSTGRES_HOST=postgres
+REDIS_HOST=redis
+```
+
 ### Testing
 
 to test integration tests:
@@ -59,4 +70,26 @@ also set config variables as below example:
 ```
 make export_env
 source set_env.sh
-```
+```
+
+### Kubernetes
+
+[Install minikube if you dont have it yet](https://minikube.sigs.k8s.io/docs/start/)
+
+Then you just need too, apply kubernetes configuration to run the project:
+
+```
+helm install booking-app ./booking-chart
+```
+
+or to update:
+```
+helm upgrade booking-app ./booking-chart
+```
+
+Warning: job 'migrate-job' may crash before 'app' pod is running, that is why you may recreate  'migrate-job' to run migration on postgres schema after 'app' pod is ready.
+
+To forward a local port 8080 to a port on a Kubernetes service:
+```
+make kube-forward-port
+```

booking-chart/.helmignore

@@ -0,0 +1,23 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

booking-chart/Chart.yaml

@@ -0,0 +1,24 @@
+apiVersion: v2
+name: booking-chart
+description: A Helm chart for Kubernetes
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "1.16.0"

booking-chart/templates/app_deployment.yaml

@@ -0,0 +1,28 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ .Release.Name }}-app
+  labels:
+    app: {{ .Release.Name }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        app: {{ .Release.Name }}
+    spec:
+      containers:
+        - name: {{ .Release.Name }}-app
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          ports:
+            - containerPort: {{ .Values.service.port }}
+          env:
+        {{- range $key, $value := .Values.env }}
+            - name: {{ $key }}
+              value: "{{ $value }}"
+        {{- end }}
+          resources: {}
+      restartPolicy: Always

booking-chart/templates/app_service.yaml

@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ .Release.Name }}-app
+  labels:
+    app: {{ .Release.Name }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: {{ .Values.service.port }}
+  selector:
+    app: {{ .Release.Name }}

booking-chart/templates/configmap_env.yaml

@@ -0,0 +1,25 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ .Release.Name }}-local-env
+  labels:
+    io.kompose.service: app-local-env
+data:
+  ACCESS_TOKEN_EXPIRE: "{{ .Values.env.ACCESS_TOKEN_EXPIRE }}"
+  ADDRESS: "{{ .Values.env.ADDRESS }}"
+  ENVIRONMENT: "{{ .Values.env.ENVIRONMENT }}"
+  HEADER_TIMEOUT: "{{ .Values.env.HEADER_TIMEOUT }}"
+  JWT_TOKEN_SECRET: "{{ .Values.env.JWT_TOKEN_SECRET }}"
+  POSTGRES_DB: "{{ .Values.env.POSTGRES_DB }}"
+  POSTGRES_HOST: "{{ .Values.env.POSTGRES_HOST }}"
+  POSTGRES_MAX_CONNECTIONS: "{{ .Values.env.POSTGRES_MAX_CONNECTIONS }}"
+  POSTGRES_PORT: "{{ .Values.env.POSTGRES_PORT }}"
+  POSTGRES_TIMEOUT: "{{ .Values.env.POSTGRES_TIMEOUT }}"
+  POSTGRES_USER: "{{ .Values.env.POSTGRES_USER }}"
+  REDIS_DATABASE: "{{ .Values.env.REDIS_DATABASE }}"
+  REDIS_HOST: "{{ .Values.env.REDIS_HOST }}"
+  REDIS_POOL_SIZE: "{{ .Values.env.REDIS_POOL_SIZE }}"
+  REDIS_PORT: "{{ .Values.env.REDIS_PORT }}"
+  REDIS_TIMEOUT: "{{ .Values.env.REDIS_TIMEOUT }}"
+  REDIS_TTL: "{{ .Values.env.REDIS_TTL }}"
+  REST_PORT: "{{ .Values.env.REST_PORT }}"

booking-chart/templates/migrate_job.yaml

@@ -0,0 +1,26 @@
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: {{ .Release.Name }}-migrate-job
+spec:
+  template:
+    spec:
+      containers:
+        - name: migrate
+          image: {{ .Values.migrate.image }}:{{ .Values.migrate.tag }}
+          command:
+            - sh
+            - -c
+            - migrate -path ./internal/database/postgres/migration -database postgres://$(POSTGRES_USER):$(POSTGRES_PASSWORD)@{{ .Values.env.POSTGRES_HOST}}:{{ .Values.env.POSTGRES_PORT }}/$(POSTGRES_DB)?sslmode=disable up
+          env:
+            - name: POSTGRES_USER
+              value: {{ .Values.env.POSTGRES_USER }}
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-postgres-secret
+                  key: POSTGRES_PASSWORD
+            - name: POSTGRES_DB
+              value:  {{ .Values.env.POSTGRES_DB }}
+      restartPolicy: Never
+  backoffLimit: {{ .Values.migrate.backoffLimit }}

booking-chart/templates/postgres_deployment.yaml

@@ -0,0 +1,48 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ .Release.Name }}-postgres
+  labels:
+    app: {{ .Release.Name }}-postgres
+  annotations:
+    kompose.cmd: kompose convert -f docker-compose.yml -o kubermanifests.yaml
+    kompose.version: 1.34.0 (cbf2835db)
+spec:
+  replicas: {{ .Values.postgres.replicaCount }}
+  selector:
+    matchLabels:
+      app: {{ .Release.Name }}-postgres
+  strategy:
+    type: Recreate
+  template:
+    metadata:
+      labels:
+        app: {{ .Release.Name }}-postgres
+      annotations:
+        kompose.cmd: kompose convert -f docker-compose.yml -o kubermanifests.yaml
+        kompose.version: 1.34.0 (cbf2835db)
+    spec:
+      containers:
+        - name: {{ .Release.Name }}-postgres
+          image: "{{ .Values.postgres.image.repository }}:{{ .Values.postgres.image.tag }}"
+          ports:
+            - containerPort: {{ .Values.env.POSTGRES_PORT }}
+              protocol: TCP
+          env:
+            - name: POSTGRES_DB
+              value: "{{ .Values.env.POSTGRES_DB }}"
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-postgres-secret
+                  key: POSTGRES_PASSWORD
+            - name: POSTGRES_USER
+              value: "{{ .Values.env.POSTGRES_USER }}"
+          volumeMounts:
+            - mountPath: /var/lib/postgresql/data
+              name: postgres-data
+      restartPolicy: Always
+      volumes:
+        - name: postgres-data
+          persistentVolumeClaim:
+            claimName: {{ .Release.Name }}-postgres-data

booking-chart/templates/postgres_pvc.yaml

@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: {{ .Release.Name }}-postgres-data
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 1Gi

booking-chart/templates/postgres_secret.yaml

@@ -0,0 +1,7 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ .Release.Name }}-postgres-secret
+type: Opaque
+data:
+  POSTGRES_PASSWORD: {{ .Values.env.POSTGRES_PASSWORD | b64enc }}

booking-chart/templates/postgres_service.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ .Release.Name }}-postgres
+  labels:
+    app: {{ .Release.Name }}-postgres
+  annotations:
+    kompose.cmd: kompose convert -f docker-compose.yml -o kubermanifests.yaml
+    kompose.version: 1.34.0 (cbf2835db)
+spec:
+  ports:
+    - name: "5432"
+      port: {{ .Values.env.POSTGRES_PORT }}
+      targetPort: {{ .Values.env.POSTGRES_PORT }}
+  selector:
+    app: {{ .Release.Name }}-postgres

booking-chart/templates/redis_deployment.yaml

@@ -0,0 +1,45 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ .Release.Name }}-redis
+  labels:
+    app: {{ .Release.Name }}-redis
+  annotations:
+    kompose.cmd: kompose convert -f docker-compose.yml -o kubermanifests.yaml
+    kompose.version: 1.34.0 (cbf2835db)
+spec:
+  replicas: {{ .Values.redis.replicaCount }}
+  selector:
+    matchLabels:
+      app: {{ .Release.Name }}-redis
+  strategy:
+    type: Recreate
+  template:
+    metadata:
+      labels:
+        app: {{ .Release.Name }}-redis
+    spec:
+      containers:
+        - name: redis
+          image: {{ .Values.redis.image.repository }}:{{ .Values.redis.image.tag }}
+          args:
+            - redis-server
+            - --requirepass
+            - "$(REDIS_PASSWORD)"
+          ports:
+            - containerPort: 6379
+              protocol: TCP
+          env:
+            - name: REDIS_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-redis-secret
+                  key: REDIS_PASSWORD
+          volumeMounts:
+            - mountPath: /data
+              name: redis-data
+      restartPolicy: Always
+      volumes:
+        - name: redis-data
+          persistentVolumeClaim:
+            claimName: {{ .Release.Name }}-redis-data

booking-chart/templates/redis_pvc.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: {{ .Release.Name }}-redis-data
+  labels:
+    app: {{ .Release.Name }}-redis-data
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: {{ .Values.redis.persistentVolume.storage }}

booking-chart/templates/redis_secret.yaml

@@ -0,0 +1,9 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ .Release.Name }}-redis-secret
+  labels:
+    app: {{ .Release.Name }}-redis-secret
+type: Opaque
+data:
+  REDIS_PASSWORD: {{ .Values.env.REDIS_PASSWORD | b64enc }}

booking-chart/templates/redis_service.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ .Release.Name }}-redis
+  labels:
+    app: {{ .Release.Name }}-redis
+  annotations:
+    kompose.cmd: kompose convert -f docker-compose.yml -o kubermanifests.yaml
+    kompose.version: 1.34.0 (cbf2835db)
+spec:
+  ports:
+    - name: redis
+      port: {{ .Values.env.REDIS_PORT }}
+      targetPort: {{ .Values.env.REDIS_PORT }}
+  selector:
+    app: {{ .Release.Name }}-redis