Add cortex otlp converter

Signed-off-by: SungJin1212 <[email protected]>

Author: SungJin1212

pkg/util/push/cortexotlpconverter/context.go

@@ -0,0 +1,25 @@
+package cortexotlpconverter
+
+import "context"
+
+// everyNTimes supports checking for context error every n times.
+type everyNTimes struct {
+	n   int
+	i   int
+	err error
+}
+
+// checkContext calls ctx.Err() every e.n times and returns an eventual error.
+func (e *everyNTimes) checkContext(ctx context.Context) error {
+	if e.err != nil {
+		return e.err
+	}
+
+	e.i++
+	if e.i >= e.n {
+		e.i = 0
+		e.err = ctx.Err()
+	}
+
+	return e.err
+}