davidhcoe commented on code in PR #3315:
URL: https://github.com/apache/arrow-adbc/pull/3315#discussion_r2285896305
##########
csharp/src/Drivers/BigQuery/BigQueryConnection.cs:
##########
@@ -85,6 +92,48 @@ public BigQueryConnection(IReadOnlyDictionary<string,
string> properties) : base
}
}
+ private void TryInitTracerProvider()
+ {
+ // Avoid locking if the tracer provider is already set.
+ if (s_tracerProvider != null)
+ {
+ return;
+ }
+ // Avoid locking if the exporter option would not activate.
+ this.properties.TryGetValue(ExportersOptions.Exporter, out string?
exporterOption);
+ ExportersBuilder exportersBuilder =
ExportersBuilder.Build(this.ActivitySourceName, addDefaultExporters:
true).Build();
+ if (!exportersBuilder.WouldActivate(exporterOption))
+ {
+ return;
+ }
+
+ // Will likely activate the exporter, so we need to lock to ensure
thread safety.
+ lock (s_tracerProviderLock)
+ {
+ // Due to race conditions, we need to check again if the
tracer provider is already set.
+ if (s_tracerProvider != null)
+ {
+ return;
+ }
+
+ // Activates the exporter specified in the connection property
(if exists) or environment variable (if is set).
+ if (exportersBuilder.TryActivate(exporterOption, out string?
exporterName, out TracerProvider? tracerProvider,
ExportersOptions.Environment.Exporter) && tracerProvider != null)
+ {
+ s_tracerProvider = tracerProvider;
+ s_isFileExporterEnabled =
ExportersOptions.Exporters.AdbcFile.Equals(exporterName);
+ }
+ }
+ }
+
+ /// <summary>
+ /// Conditional used to determines if it is safe to trace
+ /// </summary>
+ /// <remarks>
+ /// It is safe to write to some output types (ie, files) but not
others (ie, a shared resource).
+ /// </remarks>
+ /// <returns></returns>
+ internal static bool IsSafeToTrace => s_isFileExporterEnabled;
Review Comment:
is this for PII-type of data?
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