improve error handling for not installed k9s (#249)

Co-authored-by: test <[email protected]>

cmd/plural/app.go

@@ -1,14 +1,17 @@
 package main
 
 import (
+	"fmt"
 	"os/exec"
+	"strings"
 
 	tm "github.com/buger/goterm"
 	"github.com/urfave/cli"
 
 	"github.com/pluralsh/plural/pkg/application"
 	"github.com/pluralsh/plural/pkg/config"
 	"github.com/pluralsh/plural/pkg/kubernetes"
+	"github.com/pluralsh/plural/pkg/utils"
 
 	"sigs.k8s.io/application/api/v1beta1"
 )
@@ -46,6 +49,16 @@ func handleWait(c *cli.Context) error {
 func handleInfo(c *cli.Context) error {
 	repo := c.Args().Get(0)
 	conf := config.Read()
+
+	_, err := exec.LookPath("k9s")
+	if err != nil {
+		if strings.Contains(err.Error(), exec.ErrNotFound.Error()) {
+			utils.Error("Application k9s not installed.\n")
+			fmt.Println("Please install it first from here: https://k9scli.io/topics/install/ and try again")
+			return nil
+		}
+	}
+
 	cmd := exec.Command("k9s", "-n", conf.Namespace(repo))
 	return cmd.Run()
 }

go.mod

@@ -137,7 +137,7 @@ require (
 	github.com/docker/go-metrics v0.0.1 // indirect
 	github.com/docker/go-units v0.4.0 // indirect
 	github.com/emirpasic/gods v1.12.0 // indirect
-	github.com/evanphx/json-patch v4.12.0+incompatible // indirect
+	github.com/evanphx/json-patch v4.12.0+incompatible
 	github.com/exponent-io/jsonpath v0.0.0-20151013193312-d6023ce2651d // indirect
 	github.com/ghodss/yaml v1.0.0 // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
@@ -241,7 +241,7 @@ require (
 	golang.org/x/text v0.3.7
 	golang.org/x/time v0.0.0-20220411224347-583f2d630306 // indirect
 	golang.org/x/xerrors v0.0.0-20220609144429-65e65417b02f // indirect
-	google.golang.org/api v0.84.0 // indirect
+	google.golang.org/api v0.84.0
 	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/grpc v1.48.0 // indirect
 	google.golang.org/protobuf v1.28.1 // indirect

go.sum

@@ -944,8 +944,6 @@ github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINE
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/sftp v1.10.1/go.mod h1:lYOWFsE0bwd1+KfKJaKeuokY15vzFx25BLbzYYoAxZI=
-github.com/pluralsh/gqlclient v1.1.6 h1:lj6KVfUET9DPyB95+T+hXtCGqqOm+TXOB3jYzuBX1Zc=
-github.com/pluralsh/gqlclient v1.1.6/go.mod h1:qcE4KD7hBGl/JFCoXXy8zgUP0mWHJsAM6bhDAf592AE=
 github.com/pluralsh/gqlclient v1.1.7 h1:wczOD8H1J2N/ov4ohNcDY6mdbARZ1WulMaZToGCHCS0=
 github.com/pluralsh/gqlclient v1.1.7/go.mod h1:qcE4KD7hBGl/JFCoXXy8zgUP0mWHJsAM6bhDAf592AE=
 github.com/pluralsh/oauth v0.9.1-0.20220520000222-d76c0e7a0db9 h1:bMkXXUksi9ym+enaNlvds/BUg7SkZ/3ir8D3OsznA+E=