cli for checking alerts

cli/log.go

@@ -2,7 +2,9 @@ package cli
 
 import (
 	"fmt"
+	"time"
 
+	"github.com/fatih/color"
 	"github.com/urfave/cli/v2"
 	"golang.org/x/xerrors"
 )
@@ -13,6 +15,7 @@ var LogCmd = &cli.Command{
 	Subcommands: []*cli.Command{
 		LogList,
 		LogSetLevel,
+		LogAlerts,
 	},
 }
 
@@ -100,3 +103,51 @@ var LogSetLevel = &cli.Command{
 		return nil
 	},
 }
+
+var LogAlerts = &cli.Command{
+	Name:  "alerts",
+	Usage: "Get alert states",
+	Flags: []cli.Flag{
+		&cli.BoolFlag{
+			Name:  "all",
+			Usage: "get all (active and inactive) alerts",
+		},
+	},
+	Action: func(cctx *cli.Context) error {
+		api, closer, err := GetAPI(cctx)
+		if err != nil {
+			return err
+		}
+		defer closer()
+
+		ctx := ReqContext(cctx)
+
+		alerts, err := api.LogAlerts(ctx)
+		if err != nil {
+			return xerrors.Errorf("getting alerts: %w", err)
+		}
+
+		all := cctx.Bool("all")
+
+		for _, alert := range alerts {
+			if !all && !alert.Active {
+				continue
+			}
+
+			active := color.RedString("active  ")
+			if !alert.Active {
+				active = color.GreenString("inactive")
+			}
+
+			fmt.Printf("%s %s:%s\n", active, alert.Type.System, alert.Type.Subsystem)
+			if alert.LastResolved != nil {
+				fmt.Printf("         last resolved at %s; reason: %s\n", alert.LastResolved.Time.Truncate(time.Millisecond), alert.LastResolved.Message)
+			}
+			if alert.LastActive != nil {
+				fmt.Printf("         %s %s; reason: %s\n", color.YellowString("last raised at"), alert.LastActive.Time.Truncate(time.Millisecond), alert.LastActive.Message)
+			}
+		}
+
+		return nil
+	},
+}