-

faas/internal/services/runtime_service.go

@@ -0,0 +1,194 @@
+package services
+
+import (
+	"context"
+	"fmt"
+	"sync"
+
+	"go.uber.org/zap"
+
+	"github.com/RyanCopley/skybridge/faas/internal/domain"
+	"github.com/RyanCopley/skybridge/faas/internal/runtime"
+	"github.com/RyanCopley/skybridge/faas/internal/runtime/docker"
+)
+
+type runtimeService struct {
+	backends map[string]runtime.RuntimeBackend
+	mutex    sync.RWMutex
+	logger   *zap.Logger
+	config   *RuntimeConfig
+}
+
+type RuntimeConfig struct {
+	DefaultRuntime string                            `json:"default_runtime"`
+	Backends       map[string]map[string]interface{} `json:"backends"`
+}
+
+func NewRuntimeService(logger *zap.Logger, config *RuntimeConfig) RuntimeService {
+	if config == nil {
+		config = &RuntimeConfig{
+			DefaultRuntime: "docker",
+			Backends:       make(map[string]map[string]interface{}),
+		}
+	}
+
+	service := &runtimeService{
+		backends: make(map[string]runtime.RuntimeBackend),
+		logger:   logger,
+		config:   config,
+	}
+
+	// Initialize default Docker backend
+	if err := service.initializeDockerBackend(); err != nil {
+		logger.Warn("Failed to initialize Docker backend", zap.Error(err))
+	}
+
+	return service
+}
+
+func (s *runtimeService) initializeDockerBackend() error {
+	// Use simple Docker backend for now
+	dockerBackend := docker.NewSimpleDockerRuntime(s.logger)
+
+	s.mutex.Lock()
+	s.backends["docker"] = dockerBackend
+	s.mutex.Unlock()
+
+	s.logger.Info("Simple Docker runtime backend initialized")
+	return nil
+}
+
+func (s *runtimeService) GetBackend(ctx context.Context, runtimeType string) (runtime.RuntimeBackend, error) {
+	// Map domain runtime types to backend types
+	backendType := s.mapRuntimeToBackend(runtimeType)
+
+	s.mutex.RLock()
+	backend, exists := s.backends[backendType]
+	s.mutex.RUnlock()
+
+	if !exists {
+		return nil, fmt.Errorf("runtime backend '%s' not available", backendType)
+	}
+
+	// Check backend health
+	if err := backend.HealthCheck(ctx); err != nil {
+		s.logger.Warn("Runtime backend health check failed", 
+			zap.String("backend", backendType),
+			zap.Error(err))
+		return nil, fmt.Errorf("runtime backend '%s' is not healthy: %w", backendType, err)
+	}
+
+	return backend, nil
+}
+
+func (s *runtimeService) ListSupportedRuntimes(ctx context.Context) ([]*domain.RuntimeInfo, error) {
+	runtimes := []*domain.RuntimeInfo{
+		{
+			Type:         domain.RuntimeNodeJS18,
+			Version:      "18.x",
+			Available:    s.isRuntimeAvailable(ctx, "nodejs18"),
+			DefaultImage: "node:18-alpine",
+			Description:  "Node.js 18.x runtime with Alpine Linux",
+		},
+		{
+			Type:         domain.RuntimePython39,
+			Version:      "3.9.x",
+			Available:    s.isRuntimeAvailable(ctx, "python3.9"),
+			DefaultImage: "python:3.9-alpine",
+			Description:  "Python 3.9.x runtime with Alpine Linux",
+		},
+		{
+			Type:         domain.RuntimeGo120,
+			Version:      "1.20.x",
+			Available:    s.isRuntimeAvailable(ctx, "go1.20"),
+			DefaultImage: "golang:1.20-alpine",
+			Description:  "Go 1.20.x runtime with Alpine Linux",
+		},
+		{
+			Type:         domain.RuntimeCustom,
+			Version:      "custom",
+			Available:    s.isRuntimeAvailable(ctx, "custom"),
+			DefaultImage: "alpine:latest",
+			Description:  "Custom runtime with user-defined image",
+		},
+	}
+
+	return runtimes, nil
+}
+
+func (s *runtimeService) HealthCheck(ctx context.Context, runtimeType string) error {
+	backendType := s.mapRuntimeToBackend(runtimeType)
+
+	s.mutex.RLock()
+	backend, exists := s.backends[backendType]
+	s.mutex.RUnlock()
+
+	if !exists {
+		return fmt.Errorf("runtime backend '%s' not available", backendType)
+	}
+
+	return backend.HealthCheck(ctx)
+}
+
+func (s *runtimeService) GetRuntimeInfo(ctx context.Context, runtimeType string) (*runtime.RuntimeInfo, error) {
+	backendType := s.mapRuntimeToBackend(runtimeType)
+
+	s.mutex.RLock()
+	backend, exists := s.backends[backendType]
+	s.mutex.RUnlock()
+
+	if !exists {
+		return nil, fmt.Errorf("runtime backend '%s' not available", backendType)
+	}
+
+	return backend.GetInfo(ctx)
+}
+
+func (s *runtimeService) ListContainers(ctx context.Context, runtimeType string) ([]runtime.ContainerInfo, error) {
+	backendType := s.mapRuntimeToBackend(runtimeType)
+
+	s.mutex.RLock()
+	backend, exists := s.backends[backendType]
+	s.mutex.RUnlock()
+
+	if !exists {
+		return nil, fmt.Errorf("runtime backend '%s' not available", backendType)
+	}
+
+	return backend.ListContainers(ctx)
+}
+
+func (s *runtimeService) mapRuntimeToBackend(runtimeType string) string {
+	// For now, all runtimes use Docker backend
+	// In the future, we could support different backends for different runtimes
+	switch runtimeType {
+	case string(domain.RuntimeNodeJS18):
+		return "docker"
+	case string(domain.RuntimePython39):
+		return "docker"
+	case string(domain.RuntimeGo120):
+		return "docker"
+	case string(domain.RuntimeCustom):
+		return "docker"
+	default:
+		return s.config.DefaultRuntime
+	}
+}
+
+func (s *runtimeService) isRuntimeAvailable(ctx context.Context, runtimeType string) bool {
+	backendType := s.mapRuntimeToBackend(runtimeType)
+
+	s.mutex.RLock()
+	backend, exists := s.backends[backendType]
+	s.mutex.RUnlock()
+
+	if !exists {
+		return false
+	}
+
+	if err := backend.HealthCheck(ctx); err != nil {
+		return false
+	}
+
+	return true
+}