Checked if Instrument Enabled before measuring in otlpgrpc (#7824)

This pr updates otlploggprc for cecking if the operation is enabled
before addinng any metric or performing operation.

tracked in #7800

---------

Co-authored-by: David Ashpole <dashpole@google.com>
Co-authored-by: Damien Mathieu <42@dmathieu.com>

Author: 3 people

exporters/otlp/otlplog/otlploggrpc/internal/observ/instrumentation.go

@@ -161,12 +161,12 @@ func NewInstrumentation(id int64, target string) (*Instrumentation, error) {
 // ExportLogs method returns.
 func (i *Instrumentation) ExportLogs(ctx context.Context, count int64) ExportOp {
 	start := time.Now()
-	addOpt := get[metric.AddOption](addOpPool)
-	defer put(addOpPool, addOpt)
-
-	*addOpt = append(*addOpt, i.addOpt)
-
-	i.logInflightMetric.Add(ctx, count, *addOpt...)
+	if i.logInflightMetric.Enabled(ctx) {
+		addOpt := get[metric.AddOption](addOpPool)
+		defer put(addOpPool, addOpt)
+		*addOpt = append(*addOpt, i.addOpt)
+		i.logInflightMetric.Add(ctx, count, *addOpt...)
+	}
 
 	return ExportOp{
 		nLogs: count,
@@ -198,11 +198,14 @@ func (e ExportOp) End(err error) {
 	defer put(addOpPool, addOpt)
 	*addOpt = append(*addOpt, e.inst.addOpt)
 
-	e.inst.logInflightMetric.Add(e.ctx, -e.nLogs, *addOpt...)
+	if e.inst.logInflightMetric.Enabled(e.ctx) {
+		e.inst.logInflightMetric.Add(e.ctx, -e.nLogs, *addOpt...)
+	}
 	success := successful(e.nLogs, err)
-	e.inst.logExportedMetric.Add(e.ctx, success, *addOpt...)
-
-	if err != nil {
+	if e.inst.logExportedMetric.Enabled(e.ctx) {
+		e.inst.logExportedMetric.Add(e.ctx, success, *addOpt...)
+	}
+	if err != nil && e.inst.logExportedMetric.Enabled(e.ctx) {
 		// Add the error.type attribute to the attribute set.
 		attrs := get[attribute.KeyValue](attrsPool)
 		defer put(attrsPool, attrs)