Initial QSfera import

Server/services/nats/pkg/command/health.go

@@ -0,0 +1,19 @@
+package command
+
+import (
+	"github.com/qsfera/server/services/nats/pkg/config"
+
+	"github.com/spf13/cobra"
+)
+
+// Health is the entrypoint for the health command.
+func Health(cfg *config.Config) *cobra.Command {
+	return &cobra.Command{
+		Use:   "health",
+		Short: "Check health status",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			// Not implemented
+			return nil
+		},
+	}
+}

Server/services/nats/pkg/command/root.go

@@ -0,0 +1,36 @@
+package command
+
+import (
+	"os"
+
+	"github.com/qsfera/server/pkg/clihelper"
+	"github.com/qsfera/server/services/nats/pkg/config"
+
+	"github.com/spf13/cobra"
+)
+
+// GetCommands provides all commands for this service
+func GetCommands(cfg *config.Config) []*cobra.Command {
+	return []*cobra.Command{
+		// start this service
+		Server(cfg),
+
+		// interaction with this service
+
+		// infos about this service
+		Health(cfg),
+		Version(cfg),
+	}
+}
+
+// Execute is the entry point for the nats command.
+func Execute(cfg *config.Config) error {
+	app := clihelper.DefaultApp(&cobra.Command{
+		Use:   "nats",
+		Short: "starts nats server",
+	})
+	app.AddCommand(GetCommands(cfg)...)
+	app.SetArgs(os.Args[1:])
+
+	return app.ExecuteContext(cfg.Context)
+}

Server/services/nats/pkg/command/server.go

@@ -0,0 +1,110 @@
+package command
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"os/signal"
+
+	"github.com/qsfera/server/pkg/config/configlog"
+	pkgcrypto "github.com/qsfera/server/pkg/crypto"
+	"github.com/qsfera/server/pkg/log"
+	"github.com/qsfera/server/pkg/runner"
+	"github.com/qsfera/server/services/nats/pkg/config"
+	"github.com/qsfera/server/services/nats/pkg/config/parser"
+	"github.com/qsfera/server/services/nats/pkg/logging"
+	"github.com/qsfera/server/services/nats/pkg/server/debug"
+	"github.com/qsfera/server/services/nats/pkg/server/nats"
+
+	"github.com/spf13/cobra"
+)
+
+// Server is the entrypoint for the server command.
+func Server(cfg *config.Config) *cobra.Command {
+	return &cobra.Command{
+		Use:   "server",
+		Short: fmt.Sprintf("start the %s service without runtime (unsupervised mode)", cfg.Service.Name),
+		PreRunE: func(cmd *cobra.Command, args []string) error {
+			return configlog.ReturnFatal(parser.ParseConfig(cfg))
+		},
+		RunE: func(cmd *cobra.Command, args []string) error {
+			logger := log.Configure(cfg.Service.Name, cfg.Commons, cfg.LogLevel)
+
+			var cancel context.CancelFunc
+			if cfg.Context == nil {
+				cfg.Context, cancel = signal.NotifyContext(context.Background(), runner.StopSignals...)
+				defer cancel()
+			}
+			ctx := cfg.Context
+
+			gr := runner.NewGroup()
+			{
+				debugServer, err := debug.Server(
+					debug.Logger(logger),
+					debug.Context(ctx),
+					debug.Config(cfg),
+				)
+				if err != nil {
+					logger.Info().Err(err).Str("transport", "debug").Msg("Failed to initialize server")
+					return err
+				}
+
+				gr.Add(runner.NewGolangHttpServerRunner(cfg.Service.Name+".debug", debugServer))
+			}
+
+			var tlsConf *tls.Config
+			if cfg.Nats.EnableTLS {
+				// Generate a self-signing cert if no certificate is present
+				if err := pkgcrypto.GenCert(cfg.Nats.TLSCert, cfg.Nats.TLSKey, logger); err != nil {
+					logger.Fatal().Err(err).Msgf("Could not generate test-certificate")
+				}
+
+				crt, err := tls.LoadX509KeyPair(cfg.Nats.TLSCert, cfg.Nats.TLSKey)
+				if err != nil {
+					return err
+				}
+
+				clientAuth := tls.RequireAndVerifyClientCert
+				if cfg.Nats.TLSSkipVerifyClientCert {
+					clientAuth = tls.NoClientCert
+				}
+
+				tlsConf = &tls.Config{
+					MinVersion:   tls.VersionTLS12,
+					ClientAuth:   clientAuth,
+					Certificates: []tls.Certificate{crt},
+				}
+			}
+			natsServer, err := nats.NewNATSServer(
+				logging.NewLogWrapper(logger),
+				nats.Host(cfg.Nats.Host),
+				nats.Port(cfg.Nats.Port),
+				nats.ClusterID(cfg.Nats.ClusterID),
+				nats.StoreDir(cfg.Nats.StoreDir),
+				nats.TLSConfig(tlsConf),
+				nats.AllowNonTLS(!cfg.Nats.EnableTLS),
+			)
+			if err != nil {
+				return err
+			}
+
+			gr.Add(runner.New(cfg.Service.Name+".svc", func() error {
+				return natsServer.ListenAndServe()
+			}, func() {
+				logger.Info().Msg("Gracefully shutting down the NATS server...")
+				natsServer.Shutdown()
+				logger.Info().Msg("NATS server shutdown")
+			}))
+
+			grResults := gr.Run(ctx)
+
+			// return the first non-nil error found in the results
+			for _, grResult := range grResults {
+				if grResult.RunnerError != nil {
+					return grResult.RunnerError
+				}
+			}
+			return nil
+		},
+	}
+}

Server/services/nats/pkg/command/version.go

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+package command
+
+import (
+	"github.com/qsfera/server/services/nats/pkg/config"
+
+	"github.com/spf13/cobra"
+)
+
+// Version prints the service versions of all running instances.
+func Version(cfg *config.Config) *cobra.Command {
+	return &cobra.Command{
+		Use:   "version",
+		Short: "print the version of this binary and the running service instances",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			// not implemented
+			return nil
+		},
+	}
+}