Initial structure

internal/cli/serve.go

@@ -0,0 +1,34 @@
+package cli
+
+import (
+	"context"
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/spf13/cobra"
+
+	"github.com/jasper/quptime/internal/daemon"
+)
+
+func addServeCmd(root *cobra.Command) {
+	cmd := &cobra.Command{
+		Use:   "serve",
+		Short: "Run the qu daemon in the foreground",
+		Long: `Run the qu daemon: starts the inter-node listener, the local
+control socket for the CLI, the heartbeat loop and the check
+scheduler. Stops cleanly on SIGINT or SIGTERM.`,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			logger := log.New(os.Stderr, "quptime: ", log.LstdFlags|log.Lmsgprefix)
+			d, err := daemon.New(logger)
+			if err != nil {
+				return err
+			}
+			ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+			defer cancel()
+			return d.Run(ctx)
+		},
+	}
+	root.AddCommand(cmd)
+}