refactor: set default environment variables format in plugin

- Add `INPUT_ENVS_FORMAT` to the list of environment variables in `main.go`
- Define `envsFormat` variable in `plugin.go`
- Add default value for `Config.EnvsFormat` in `plugin.go` `Exec()` function

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

main.go

@@ -199,8 +199,8 @@ func main() {
 		&cli.StringFlag{
 			Name:    "envs.format",
 			Usage:   "",
-			EnvVars: []string{"PLUGIN_ENVS_FORMAT"},
-			Value:   "export {NAME}={VALUE}",
+			EnvVars: []string{"PLUGIN_ENVS_FORMAT", "INPUT_ENVS_FORMAT"},
+			Value:   envsFormat,
 		},
 	}
 

plugin.go

@@ -17,6 +17,7 @@ var (
 	errMissingHost          = errors.New("Error: missing server host")
 	errMissingPasswordOrKey = errors.New("Error: can't connect without a private SSH key or password")
 	errCommandTimeOut       = errors.New("Error: command timeout")
+	envsFormat              = "export {NAME}={VALUE}"
 )
 
 type (
@@ -179,6 +180,10 @@ func (p Plugin) Exec() error {
 		return errMissingPasswordOrKey
 	}
 
+	if p.Config.EnvsFormat == "" {
+		p.Config.EnvsFormat = envsFormat
+	}
+
 	wg := sync.WaitGroup{}
 	wg.Add(len(p.Config.Host))
 	errChannel := make(chan error)