Function instanceConsoleLogDelete

cmd/incusd/instance_console.go:830–907

swagger:operation DELETE /1.0/instances/{name}/console instances instance_console_delete Clear the console log Clears the console log buffer. --- produces: - application/json parameters: - in: path name: name description: Instance name type: string required: true

(d *Daemon, r *http.Request)

//	  "500":
//	    $ref: "#/responses/InternalServerError"
func instanceConsoleLogDelete(d *Daemon, r *http.Request) response.Response {
	if !liblxc.RuntimeLiblxcVersionAtLeast(liblxc.Version(), 3, 0, 0) {
		return response.BadRequest(errors.New("Clearing the console buffer requires liblxc >= 3.0"))
	}

	name, err := pathVar(r, "name")
	if err != nil {
		return response.SmartError(err)
	}

	if internalInstance.IsSnapshot(name) {
		return response.BadRequest(errors.New("Invalid instance name"))
	}

	projectName := request.ProjectParam(r)

	inst, err := instance.LoadByProjectAndName(d.State(), projectName, name)
	if err != nil {
		return response.SmartError(err)
	}

	if inst.Type() != instancetype.Container {
		return response.SmartError(errors.New("Instance is not container type"))
	}

	c, ok := inst.(instance.Container)
	if !ok {
		return response.SmartError(errors.New("Instance is not container type"))
	}

	truncateConsoleLogFile := func(logPath string) error {
		// Check that this is a regular file. We don't want to try and unlink
		// /dev/stderr or /dev/null or something.
		st, err := os.Stat(logPath)
		if err != nil {
			return err
		}

		if !st.Mode().IsRegular() {
			return errors.New("The console log is not a regular file")
		}

		if logPath == "" {
			return errors.New("Container does not keep a console logfile")
		}

		return os.Truncate(logPath, 0)
	}

	if !inst.IsRunning() {
		consoleLogpath := c.ConsoleBufferLogPath()
		return response.SmartError(truncateConsoleLogFile(consoleLogpath))
	}

	// Send a ringbuffer request to the container.
	console := liblxc.ConsoleLogOptions{
		ClearLog:       true,
		ReadLog:        false,