add emf exporter to changelog

Author: liustve

CHANGELOG.md

@@ -12,3 +12,6 @@ For any change that affects end users of this package, please add an entry under
 If your change does not need a CHANGELOG entry, add the "skip changelog" label to your PR.
 
 ## Unreleased
+
+- add CloudWatch EMF metrics exporter
+  ([#1209](https://github.com/aws-observability/aws-otel-java-instrumentation/pull/1209))

awsagentprovider/src/main/java/software/amazon/opentelemetry/javaagent/providers/exporter/aws/metrics/AwsCloudWatchEmfExporter.java

@@ -209,7 +209,7 @@ private void sendLogEvent(Map<String, Object> logEvent) {
 
         if (willEventBatchExceedLimit(currentBatch, eventSize)
             || !isBatchActive(currentBatch, timestamp)) {
-          sendLogBatch(currentBatch.getLogEvents());
+          this.sendLogBatch(currentBatch.getLogEvents());
           eventBatch = new LogEventBatch();
           currentBatch = eventBatch;
         }
@@ -225,7 +225,7 @@ private void sendLogEvent(Map<String, Object> logEvent) {
     private void flushPendingEvents() {
       if (eventBatch != null && !eventBatch.getLogEvents().isEmpty()) {
         LogEventBatch currentBatch = eventBatch;
-        sendLogBatch(currentBatch.getLogEvents());
+        this.sendLogBatch(currentBatch.getLogEvents());
         eventBatch = new LogEventBatch();
       }
       logger.fine("CloudWatchLogClient flushed the buffered log events");