refactor(exporter-jaeger): migrate away from getEnv() (open-telemetry#5464)

Author: pichlermarc

CHANGELOG.md

@@ -105,6 +105,7 @@ For semantic convention package changes, see the [semconv CHANGELOG](packages/se
   * `WebTracerProvider` constructor now does not throw anymore when `contextManager` or `propagator` are passed as extra options to the constructor
 * feat(sdk-trace-base): add stack trace warning to debug instrumentation [#5363](https://github.com/open-telemetry/opentelemetry-js/pull/5363) @neilfordyce
 * feat(core): add more scalable replacements for getEnv(), getEnvWithoutDefaults() [#5443](https://github.com/open-telemetry/opentelemetry-js/pull/5443) @pichlermarc
+* refactor(exporter-jaeger): migrate away from getEnv() [#5464](https://github.com/open-telemetry/opentelemetry-js/pull/5464) @pichlermarc
 
 ### :bug: (Bug Fix)
 

packages/opentelemetry-exporter-jaeger/src/jaeger.ts

@@ -19,7 +19,8 @@ import {
   BindOnceFuture,
   ExportResult,
   ExportResultCode,
-  getEnv,
+  getNumberFromEnv,
+  getStringFromEnv,
 } from '@opentelemetry/core';
 import { ReadableSpan, SpanExporter } from '@opentelemetry/sdk-trace-base';
 import { Socket } from 'dgram';
@@ -60,15 +61,21 @@ export class JaegerExporter implements SpanExporter {
     // to the endpoint via HTTP, making the OTEL_EXPORTER_JAEGER_AGENT_HOST and JAEGER_AGENT_PORT unused. If OTEL_EXPORTER_JAEGER_ENDPOINT is secured,
     // HTTP basic authentication can be performed by setting the OTEL_EXPORTER_JAEGER_USER and OTEL_EXPORTER_JAEGER_PASSWORD environment variables.
 
-    const env = getEnv();
     localConfig.endpoint =
-      localConfig.endpoint || env.OTEL_EXPORTER_JAEGER_ENDPOINT;
+      localConfig.endpoint ||
+      (getStringFromEnv('OTEL_EXPORTER_JAEGER_ENDPOINT') ?? '');
     localConfig.username =
-      localConfig.username || env.OTEL_EXPORTER_JAEGER_USER;
+      localConfig.username ||
+      (getStringFromEnv('OTEL_EXPORTER_JAEGER_USER') ?? '');
     localConfig.password =
-      localConfig.password || env.OTEL_EXPORTER_JAEGER_PASSWORD;
-    localConfig.host = localConfig.host || env.OTEL_EXPORTER_JAEGER_AGENT_HOST;
-    localConfig.port = localConfig.port || env.OTEL_EXPORTER_JAEGER_AGENT_PORT;
+      localConfig.password ||
+      (getStringFromEnv('OTEL_EXPORTER_JAEGER_PASSWORD') ?? '');
+    localConfig.host =
+      localConfig.host ||
+      (getStringFromEnv('OTEL_EXPORTER_JAEGER_AGENT_HOST') ?? '');
+    localConfig.port =
+      localConfig.port ||
+      (getNumberFromEnv('OTEL_EXPORTER_JAEGER_AGENT_PORT') ?? 6832);
 
     this._localConfig = localConfig;