Storing default export timeout in constants

Author: LikeTheSalad

disk-buffering/src/main/java/io/opentelemetry/contrib/disk/buffering/exporters/LogRecordToDiskExporter.java

@@ -19,6 +19,7 @@
 public final class LogRecordToDiskExporter implements LogRecordExporter {
   private final SignalStorageExporter<LogRecordData> storageExporter;
   private final ExporterCallback<LogRecordData> callback;
+  private static final Duration DEFAULT_EXPORT_TIMEOUT = Duration.ofSeconds(10);
 
   private LogRecordToDiskExporter(
       SignalStorageExporter<LogRecordData> storageExporter,
@@ -50,7 +51,7 @@ public CompletableResultCode shutdown() {
   public static final class Builder {
     private final SignalStorage.LogRecord storage;
     private ExporterCallback<LogRecordData> callback = ExporterCallback.noop();
-    private Duration writeTimeout = Duration.ofSeconds(10);
+    private Duration writeTimeout = DEFAULT_EXPORT_TIMEOUT;
 
     @CanIgnoreReturnValue
     public Builder setExporterCallback(ExporterCallback<LogRecordData> value) {

disk-buffering/src/main/java/io/opentelemetry/contrib/disk/buffering/exporters/MetricToDiskExporter.java

@@ -23,6 +23,7 @@ public final class MetricToDiskExporter implements MetricExporter {
   private final SignalStorageExporter<MetricData> storageExporter;
   private final AggregationTemporalitySelector aggregationTemporalitySelector;
   private final ExporterCallback<MetricData> callback;
+  private static final Duration DEFAULT_EXPORT_TIMEOUT = Duration.ofSeconds(10);
 
   private MetricToDiskExporter(
       SignalStorageExporter<MetricData> storageExporter,
@@ -63,7 +64,7 @@ public static final class Builder {
     private AggregationTemporalitySelector aggregationTemporalitySelector =
         AggregationTemporalitySelector.alwaysCumulative();
     private ExporterCallback<MetricData> callback = ExporterCallback.noop();
-    private Duration writeTimeout = Duration.ofSeconds(10);
+    private Duration writeTimeout = DEFAULT_EXPORT_TIMEOUT;
 
     @CanIgnoreReturnValue
     public Builder setExporterCallback(ExporterCallback<MetricData> value) {

disk-buffering/src/main/java/io/opentelemetry/contrib/disk/buffering/exporters/SpanToDiskExporter.java

@@ -17,9 +17,9 @@
 
 /** Exporter that stores spans into disk. */
 public final class SpanToDiskExporter implements SpanExporter {
-
   private final SignalStorageExporter<SpanData> storageExporter;
   private final ExporterCallback<SpanData> callback;
+  private static final Duration DEFAULT_EXPORT_TIMEOUT = Duration.ofSeconds(10);
 
   private SpanToDiskExporter(
       SignalStorageExporter<SpanData> storageExporter, ExporterCallback<SpanData> callback) {
@@ -50,7 +50,7 @@ public CompletableResultCode shutdown() {
   public static final class Builder {
     private final SignalStorage.Span storage;
     private ExporterCallback<SpanData> callback = ExporterCallback.noop();
-    private Duration writeTimeout = Duration.ofSeconds(10);
+    private Duration writeTimeout = DEFAULT_EXPORT_TIMEOUT;
 
     private Builder(SignalStorage.Span storage) {
       this.storage = storage;