Add options

1 files changed, 22 insertions, 0 deletions

diff --git a/internal/options/options.go b/internal/options/options.go
new file mode 100644
index 0000000..f7510ba
--- /dev/null
+++ b/internal/options/options.go
@@ -0,0 +1,22 @@
+package options
+
+import (
+	"flag"
+	"time"
+)
+
+type Options struct {
+	InputFile       string
+	NumWorkers      int
+	MetricsInterval time.Duration
+	Timeout         time.Duration
+}
+
+func Parse() (opts Options) {
+	flag.StringVar(&opts.InputFile, "i", "lists/small.lst", "input file, one domain name per line")
+	flag.IntVar(&opts.NumWorkers, "w", 10, "number of parallel workers")
+	flag.DurationVar(&opts.Timeout, "t", 10*time.Second, "timeout for each website visit")
+	flag.DurationVar(&opts.MetricsInterval, "m", 5*time.Second, "how often to emit metrics")
+	flag.Parse()
+	return
+}