feat: Add oc-catalog component with Helm chart

arch/diagrams/src/oc-catalog.puml

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+@startuml
+skinparam componentStyle rectangle
+
+node "Kubernetes Cluster" {
+
+  cloud "Service: oc-catalog" as oc_catalog_service {
+    oc_catalog_service : Type: NodePort
+    oc_catalog_service : External NodePort: 8087  # Exposed NodePort for external access
+    oc_catalog_service : Internal TargetPort: 8080
+  }
+
+  ' Deployment for oc-catalog managing the pods
+  node "Deployment: oc-catalog" as oc_catalog_deployment {
+    oc_catalog_deployment : Replicas: {{ .Values.replicaCount }}
+    oc_catalog_deployment : Image: registry.dev.svc.cluster.local:5000/oc-catalog:latest
+    oc_catalog_deployment : PullPolicy: IfNotPresent
+    oc_catalog_deployment : TargetPort: 8080
+
+    node "Pod: oc-catalog-1" as catalog_1 {
+      component "Container: oc-catalog" as oc_catalog_container1 {
+        oc_catalog_container1 : Internal Port: 8080
+        oc_catalog_container1 : MONGO_DATABASE=DC_myDC
+        oc_catalog_container1 : MONGO_URI=mongodb://mongo:27017
+      }
+    }
+  }
+
+  oc_catalog_service --> oc_catalog_deployment : Routes traffic to Deployment
+  oc_catalog_deployment --> catalog_1 : Manages Pods
+
+  ' MongoDB service and statefulset
+
+  cloud "Service: mongo" as mongo_service {
+    mongo_service : Type: ClusterIP
+    mongo_service : Internal Port: 27017
+  }
+
+  catalog_1 --> mongo_service : Connects to MongoDB
+
+}
+@enduml

helm/Chart.yaml

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+apiVersion: v2
+name: oc-catalog
+description: A Helm chart for deploying the oc-catalog application
+version: 0.1.0
+appVersion: "1.0"

helm/README.md

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+# README.md - `oc-catalog` Helm Chart
+
+This document describes the different tags found in the `values.yml` file used in the Helm chart for the `oc-catalog` component.
+
+## Tags in the `values.yml` file
+
+### `replicaCount`
+- **Description**: Defines the number of replicas for the deployment. A replica represents an instance of the application that will be deployed.
+- **Example**: `1` means a single instance of the `oc-catalog` service will be deployed.
+
+### `image.repository`
+- **Description**: Specifies the URL of the Docker image registry where the `oc-catalog` component image is stored.
+- **Example**: `registry.dev.svc.cluster.local:5000/oc-catalog` refers to a local registry hosted within the `cluster.local` network.
+
+### `image.tag`
+- **Description**: Indicates the tag of the Docker image to use. Typically, this could be a specific version or `latest` to always pull the latest version.
+- **Example**: `latest` means the most recent version of the image will be used.
+
+### `image.pullPolicy`
+- **Description**: Defines the image pull policy. The possible options are:
+  - `Always`: Always pull the image.
+  - `IfNotPresent`: Pull the image only if it is not already present on the node.
+  - `Never`: Never pull the image.
+- **Example**: `IfNotPresent` means the image will only be pulled if it is not already present on the node.
+
+### `env.mongoDatabase`
+- **Description**: Defines the name of the MongoDB database the application will connect to.
+- **Example**: `DC_myDC` refers to the MongoDB database used by the application.
+
+### `env.mongoUrl`
+- **Description**: Specifies the connection URL for MongoDB used by the application.
+- **Example**: `mongodb://toto:27017` indicates that the application will connect to the MongoDB instance hosted at `toto` on port `27017`.
+
+### `service.type`
+- **Description**: Defines the type of Kubernetes service. Possible types include:
+  - `ClusterIP`: The service is only accessible within the cluster.
+  - `NodePort`: The service is accessible via a specific port on all cluster nodes.
+  - `LoadBalancer`: The service is exposed via an external Load Balancer.
+- **Example**: `ClusterIP` means the service will only be accessible within the Kubernetes cluster.
+
+### `service.port`
+- **Description**: Specifies the port on which the service will be exposed within the cluster.
+- **Example**: `8087` means the service will be accessible on port `8087`.
+
+### `service.targetPort`
+- **Description**: Defines the port on which the application listens inside the container.
+- **Example**: `8080` means the application listens on port `8080` within the container.
+
+### `resources.limits.cpu`
+- **Description**: Specifies the maximum amount of CPU (in millicores) allocated to the container.
+- **Example**: `500m` means the container can use up to 0.5 CPU (or 50% of a full CPU core).
+
+### `resources.limits.memory`
+- **Description**: Specifies the maximum amount of memory (in MiB) allocated to the container.
+- **Example**: `512Mi` means the container can use up to 512 MiB of memory.
+
+### `resources.requests.cpu`
+- **Description**: Defines the guaranteed amount of CPU (in millicores) for the container. Kubernetes will ensure this amount is always available.
+- **Example**: `250m` means the container will have at least 0.25 CPU (or 25% of a full CPU core).
+
+### `resources.requests.memory`
+- **Description**: Defines the guaranteed amount of memory (in MiB) for the container. Kubernetes will reserve this memory for the container.
+- **Example**: `256Mi` means the container will have at least 256 MiB of memory.
+
+## Conclusion
+
+This `values.yml` file allows configuring the deployment settings for the `oc-catalog` component. Each tag plays a specific role in defining the Docker image, service configuration, and resource allocation for the container within the Kubernetes cluster.

helm/templates/configmap.yml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: oc-catalog-configmap
+data:
+  MONGO_DATABASE: "{{ .Values.env.mongoDatabase }}"
+  OCCATALOG_MONGOURL: "{{ .Values.env.mongoUrl }}"

helm/templates/deployment.yml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: oc-catalog
+  labels:
+    app: oc-catalog
+    chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app: oc-catalog
+      release: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        app: oc-catalog
+        release: {{ .Release.Name }}
+    spec:
+      containers:
+      - name: oc-catalog
+        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+        imagePullPolicy: {{ .Values.image.pullPolicy }}
+        ports:
+        - containerPort: {{ .Values.service.targetPort }}
+        envFrom:
+            - configMapRef:
+                name: oc-catalog-configmap
+      imagePullSecrets:
+      {{- if .Values.imagePullSecrets }}
+        {{- range .Values.imagePullSecrets }}
+        - name: {{ .name }}
+        {{- end }}
+      {{- end }}

helm/templates/service.yml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: oc-catalog
+  labels:
+    app: oc-catalog
+    release: {{ .Release.Name }}
+spec:
+  type: {{ .Values.service.type }}
+  selector:
+    app: oc-catalog
+    release: {{ .Release.Name }}
+  ports:
+    - protocol: TCP
+      port: {{ .Values.service.port }}
+      targetPort: {{ .Values.service.targetPort }}

helm/values.yaml

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+replicaCount: 1
+
+image:
+  repository: registry.dev.svc.cluster.local:5000/oc-catalog
+  tag: latest
+  pullPolicy: IfNotPresent
+
+service:
+  type: NodePort
+  port: 8087
+  targetPort: 8080
+
+env:
+  mongoDatabase: DC_myDC
+  mongoUrl: mongodb://toto:27017
+
+imagePullSecrets:
+  - name: regcred