init

go.mod

@@ -0,0 +1,3 @@
+module github.com/cubixle/l1
+
+go 1.16

l1.go

@@ -0,0 +1,22 @@
+package l1
+
+import "time"
+
+// Runner
+type Runner struct {
+	MaxConnections int
+	Timeout        int
+	RunTime        time.Duration
+}
+
+func NewRunner(opts ...Opt) {
+	r := &Runner{
+		RunTime: 60 * time.Second,
+	}
+	for _, o := range opts {
+		o(r)
+	}
+}
+
+// F defines the function type for runners.
+type F func(url string) error

opts.go

@@ -0,0 +1,24 @@
+package l1
+
+import "time"
+
+// Opt
+type Opt func(*Runner)
+
+func WithMaxConns(amount int) Opt {
+	return func(r *Runner) {
+		r.MaxConnections = amount
+	}
+}
+
+func WithTimeout(s int) Opt {
+	return func(r *Runner) {
+		r.Timeout = s
+	}
+}
+
+func WithRunTime(timeInSecs int) Opt {
+	return func(r *Runner) {
+		r.RunTime = time.Duration(timeInSecs) * time.Second
+	}
+}