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Make it possible to truncate files #43

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9ab5969
Make it possible to truncate the files on every run.
mvandenboogaard-tilaa Mar 18, 2021
5c218c6
Replace spaces for tabs
mvdboogaard Mar 18, 2021
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5 changes: 3 additions & 2 deletions config/options.go
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Original file line number Diff line number Diff line change
Expand Up @@ -19,8 +19,9 @@ type OptionsType struct {

Printer string `short:"p" long:"printer" description:"the output printer to use (valid printers: ncurses, text, json)" default:"ncurses"`

Output string `short:"o" long:"output" description:"the output channel to send printer output (valid output: stdout, file, tcp, udp)" default:"stdout"`
OutputTarget string `long:"target" description:"for output 'file' the location, for 'tcp' or 'udp' the url (host:port) to the server"`
Output string `short:"o" long:"output" description:"the output channel to send printer output (valid output: stdout, file, tcp, udp)" default:"stdout"`
OutputTarget string `long:"target" description:"for output 'file' the location, for 'tcp' or 'udp' the url (host:port) to the server"`
OutputTargetTruncate bool `long:"targettruncate" description:"for output 'file' the target will only contain the latest result (can be used for prometheus json exporter)"`

NetworkDevice string `long:"netdev" description:"The network device used for the virtual traffic"`
StorageDevice string `long:"storedev" description:"The storage device used for the virtual block devices"`
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8 changes: 8 additions & 0 deletions runners/printer.go
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Expand Up @@ -41,6 +41,14 @@ func InitializePrinter(wg *sync.WaitGroup) {

// Print runs one printing cycle
func Print() {
if config.Options.Output == "file" && config.Options.OutputTargetTruncate {
err := os.Truncate(config.Options.OutputTarget, 0)
if err != nil {
fmt.Fprintf(os.Stderr, "failed to truncate the output file")
os.Exit(1)
}
}

printable := models.Printable{}

// add general domain fields first
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