c556cc71d4
- Add Kubernetes client module for interacting with kubectl - Implement methods to get cluster info, pods, deployments, and services - Create a Kubernetes example script demonstrating client usage - Add JSON response structs for parsing kubectl output - Define runtime resource structs (Pod, Deployment, Service) for structured data - Include comprehensive unit tests for data structures and client logic
232 lines
11 KiB
GLSL
Executable File
232 lines
11 KiB
GLSL
Executable File
#!/usr/bin/env -S v -n -w -gc none -cc tcc -d use_openssl -enable-globals run
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import incubaid.herolib.virt.kubernetes
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import incubaid.herolib.ui.console
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println('╔════════════════════════════════════════════════════════════════╗')
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println('║ Kubernetes Client Example - HeroLib ║')
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println('║ Demonstrates JSON parsing and cluster interaction ║')
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println('╚════════════════════════════════════════════════════════════════╝')
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println('')
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// Create a Kubernetes client instance using the factory pattern
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println('[INFO] Creating Kubernetes client instance...')
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mut client := kubernetes.new() or {
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console.print_header('Error: Failed to create Kubernetes client')
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eprintln('${err}')
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eprintln('')
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eprintln('Make sure kubectl is installed and configured properly.')
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eprintln('You can install kubectl ')
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exit(1)
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}
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println('[SUCCESS] Kubernetes client created successfully')
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println('')
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// ============================================================================
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// 1. Get Cluster Information
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// ============================================================================
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console.print_header('1. Cluster Information')
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println('[INFO] Retrieving cluster information...')
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println('')
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cluster := client.cluster_info() or {
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console.print_header('Error: Failed to get cluster information')
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eprintln('${err}')
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eprintln('')
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eprintln('This usually means:')
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eprintln(' - kubectl is not installed')
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eprintln(' - No Kubernetes cluster is configured (check ~/.kube/config)')
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eprintln(' - The cluster is not accessible')
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eprintln('')
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eprintln('To set up a local cluster, you can use:')
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eprintln(' - Minikube: https://minikube.sigs.k8s.io/docs/start/')
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eprintln(' - Kind: https://kind.sigs.k8s.io/docs/user/quick-start/')
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eprintln(' - Docker Desktop (includes Kubernetes)')
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exit(1)
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}
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println('┌─────────────────────────────────────────────────────────────┐')
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println('│ Cluster Overview │')
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println('├─────────────────────────────────────────────────────────────┤')
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println('│ API Server: ${cluster.api_server:-50}│')
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println('│ Version: ${cluster.version:-50}│')
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println('│ Nodes: ${cluster.nodes.str():-50}│')
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println('│ Namespaces: ${cluster.namespaces.str():-50}│')
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println('│ Running Pods: ${cluster.running_pods.str():-50}│')
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println('└─────────────────────────────────────────────────────────────┘')
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println('')
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// ============================================================================
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// 2. Get Pods in the 'default' namespace
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// ============================================================================
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console.print_header('2. Pods in "default" Namespace')
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println('[INFO] Retrieving pods from the default namespace...')
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println('')
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pods := client.get_pods('default') or {
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console.print_header('Warning: Failed to get pods')
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eprintln('${err}')
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eprintln('')
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[]kubernetes.Pod{}
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}
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if pods.len == 0 {
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println('No pods found in the default namespace.')
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println('')
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println('To create a test pod, run:')
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println(' kubectl run nginx --image=nginx')
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println('')
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} else {
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println('Found ${pods.len} pod(s) in the default namespace:')
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println('')
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for i, pod in pods {
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println('┌─────────────────────────────────────────────────────────────┐')
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println('│ Pod #${i + 1:-56}│')
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println('├─────────────────────────────────────────────────────────────┤')
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println('│ Name: ${pod.name:-50}│')
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println('│ Namespace: ${pod.namespace:-50}│')
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println('│ Status: ${pod.status:-50}│')
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println('│ Node: ${pod.node:-50}│')
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println('│ IP: ${pod.ip:-50}│')
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println('│ Containers: ${pod.containers.join(', '):-50}│')
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println('│ Created: ${pod.created_at:-50}│')
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if pod.labels.len > 0 {
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println('│ Labels: │')
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for key, value in pod.labels {
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label_str := ' ${key}=${value}'
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println('│ ${label_str:-58}│')
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}
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}
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println('└─────────────────────────────────────────────────────────────┘')
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println('')
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}
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}
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// ============================================================================
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// 3. Get Deployments in the 'default' namespace
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// ============================================================================
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console.print_header('3. Deployments in "default" Namespace')
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println('[INFO] Retrieving deployments from the default namespace...')
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println('')
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deployments := client.get_deployments('default') or {
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console.print_header('Warning: Failed to get deployments')
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eprintln('${err}')
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eprintln('')
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[]kubernetes.Deployment{}
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}
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if deployments.len == 0 {
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println('No deployments found in the default namespace.')
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println('')
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println('To create a test deployment, run:')
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println(' kubectl create deployment nginx --image=nginx --replicas=3')
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println('')
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} else {
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println('Found ${deployments.len} deployment(s) in the default namespace:')
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println('')
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for i, deploy in deployments {
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ready_status := if deploy.ready_replicas == deploy.replicas { '✓' } else { '⚠' }
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println('┌─────────────────────────────────────────────────────────────┐')
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println('│ Deployment #${i + 1:-53}│')
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println('├─────────────────────────────────────────────────────────────┤')
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println('│ Name: ${deploy.name:-44}│')
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println('│ Namespace: ${deploy.namespace:-44}│')
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println('│ Replicas: ${deploy.replicas.str():-44}│')
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println('│ Ready Replicas: ${deploy.ready_replicas.str():-44}│')
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println('│ Available: ${deploy.available_replicas.str():-44}│')
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println('│ Updated: ${deploy.updated_replicas.str():-44}│')
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println('│ Status: ${ready_status:-44}│')
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println('│ Created: ${deploy.created_at:-44}│')
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if deploy.labels.len > 0 {
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println('│ Labels: │')
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for key, value in deploy.labels {
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label_str := ' ${key}=${value}'
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println('│ ${label_str:-58}│')
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}
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}
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println('└─────────────────────────────────────────────────────────────┘')
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println('')
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}
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}
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// ============================================================================
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// 4. Get Services in the 'default' namespace
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// ============================================================================
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console.print_header('4. Services in "default" Namespace')
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println('[INFO] Retrieving services from the default namespace...')
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println('')
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services := client.get_services('default') or {
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console.print_header('Warning: Failed to get services')
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eprintln('${err}')
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eprintln('')
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[]kubernetes.Service{}
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}
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if services.len == 0 {
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println('No services found in the default namespace.')
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println('')
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println('To create a test service, run:')
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println(' kubectl expose deployment nginx --port=80 --type=ClusterIP')
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println('')
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} else {
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println('Found ${services.len} service(s) in the default namespace:')
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println('')
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for i, svc in services {
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println('┌─────────────────────────────────────────────────────────────┐')
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println('│ Service #${i + 1:-54}│')
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println('├─────────────────────────────────────────────────────────────┤')
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println('│ Name: ${svc.name:-48}│')
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println('│ Namespace: ${svc.namespace:-48}│')
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println('│ Type: ${svc.service_type:-48}│')
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println('│ Cluster IP: ${svc.cluster_ip:-48}│')
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if svc.external_ip.len > 0 {
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println('│ External IP: ${svc.external_ip:-48}│')
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}
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if svc.ports.len > 0 {
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println('│ Ports: ${svc.ports.join(', '):-48}│')
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}
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println('│ Created: ${svc.created_at:-48}│')
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if svc.labels.len > 0 {
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println('│ Labels: │')
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for key, value in svc.labels {
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label_str := ' ${key}=${value}'
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println('│ ${label_str:-58}│')
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}
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}
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println('└─────────────────────────────────────────────────────────────┘')
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println('')
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}
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}
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// ============================================================================
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// Summary
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// ============================================================================
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console.print_header('Summary')
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println('✓ Successfully demonstrated Kubernetes client functionality')
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println('✓ Cluster information retrieved and parsed')
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println('✓ Pods: ${pods.len} found')
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println('✓ Deployments: ${deployments.len} found')
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println('✓ Services: ${services.len} found')
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println('')
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println('All JSON parsing operations completed successfully!')
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println('')
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println('╔════════════════════════════════════════════════════════════════╗')
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println('║ Example Complete ║')
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println('╚════════════════════════════════════════════════════════════════╝')
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