perf: lazy initialization of the gzip stream

open-telemetry · Nov 2, 2021 · e1ff0fd · e1ff0fd
1 parent 4e311bd
commit e1ff0fd
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/experimental/packages/opentelemetry-exporter-otlp-http/src/platform/node/util.ts b/experimental/packages/opentelemetry-exporter-otlp-http/src/platform/node/util.ts
@@ -24,8 +24,7 @@ import { OTLPExporterNodeConfigBase } from '.';
 import { diag } from '@opentelemetry/api';
 import { CompressionAlgorithm } from './types';
 
-const gzip = zlib.createGzip();
-
+let gzip: zlib.Gzip | undefined;
 /**
  * Sends data using http
  * @param collector
@@ -83,6 +82,9 @@ export function sendWithHttp<ExportItem, ServiceRequest>(
 
   switch (collector.compression) {
     case CompressionAlgorithm.GZIP: {
+      if (!gzip) {
+        gzip = zlib.createGzip();
+      }
       req.setHeader('Content-Encoding', 'gzip');
       const dataStream = readableFromBuffer(data);
       dataStream.on('error', onError)