tcm: add tt tcm stop command

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Title: add the tt tcm stop command.

Add command tt tcm stop to gracefully terminate TCM:
- Works in both modes(watchdog and interactive)
- Stops all subprocesses

Closes #TNTP-1993

Author: AlexandrLitkevich

CHANGELOG.md

@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - `tt tcm start` OR `tt tcm start --path /path/to/tcm`: added the capability to run TCM in interactive mode.
 - `tt tcm start --watchdog`: implemented Watchdog mode for automatic restarting of TCM upon unexpected termination.
 - `tt tcm status`: added command to check TCM runtime status (modes: `watchdog` or `interactive`).
+- `tt tcm stop`: add command for graceful termination of TCM processes (modes: `watchdog` or `interactive`).
 
 ### Changed
 

cli/cmd/tcm.go

@@ -178,13 +178,13 @@ func internalTcmStop(cmdCtx *cmdcontext.CmdCtx, args []string) error {
 		if err != nil {
 			return err
 		}
-		log.Println("Watchdog and TCM stoped")
+		log.Println("Watchdog and TCM stopped")
 	} else {
 		_, err := process_utils.StopProcess(tcmPidFile)
 		if err != nil {
 			return err
 		}
-		log.Println("TCM stoped")
+		log.Println("TCM stopped")
 	}
 
 	return nil

cli/process_utils/process_utils.go

@@ -118,8 +118,8 @@ func ExistsAndRecord(pidFileName string) (bool, error) {
 			return true, nil
 		}
 	} else if !os.IsNotExist(err) {
-		return false, fmt.Errorf(`something went wrong while trying to read the PID file. Error: "%v"`,
-			err)
+		return false, fmt.Errorf(`something went wrong while trying to read the`+
+			`PID file. Error: "%v"`, err)
 	}
 
 	return false, nil