/// <summary>
/// Translating <see cref="SpanData"/> to Stackdriver's Span
/// According to <see href="https://cloud.google.com/trace/docs/reference/v2/rpc/google.devtools.cloudtrace.v2"/> specifications.
/// </summary>
/// <param name="spanData">Span in OpenTelemetry format.</param>
/// <param name="projectId">Google Cloud Platform Project Id.</param>
/// <returns><see cref="ISpan"/>.</returns>
public static Google.Cloud.Trace.V2.Span ToSpan(this SpanData spanData, string projectId)
{
var spanId = spanData.Context.SpanId.ToHexString();
// Base span settings
var span = new Google.Cloud.Trace.V2.Span
{
SpanName = new SpanName(projectId, spanData.Context.TraceId.ToHexString(), spanId),
SpanId = spanId,
DisplayName = new TruncatableString {
Value = spanData.Name
},
StartTime = spanData.StartTimestamp.ToTimestamp(),
EndTime = spanData.EndTimestamp.ToTimestamp(),
ChildSpanCount = spanData.ChildSpanCount,
};
if (spanData.ParentSpanId != null)
{
var parentSpanId = spanData.ParentSpanId.ToHexString();
if (!string.IsNullOrEmpty(parentSpanId))
{
span.ParentSpanId = parentSpanId;
}
}
// Span Links
if (spanData.Links != null)
{
span.Links = new Google.Cloud.Trace.V2.Span.Types.Links
{
DroppedLinksCount = spanData.Links.DroppedLinksCount,
Link = { spanData.Links.Links.Select(l => l.ToLink()) },
};
}
// Span Attributes
if (spanData.Attributes != null)
{
span.Attributes = new Google.Cloud.Trace.V2.Span.Types.Attributes
{
DroppedAttributesCount = spanData.Attributes != null ? spanData.Attributes.DroppedAttributesCount : 0,
AttributeMap =
{
spanData.Attributes?.AttributeMap?.ToDictionary(
s => s.Key,
s => s.Value?.ToAttributeValue()),
},
};
}
return(span);
}
/// <summary>
/// Translating <see cref="SpanData"/> to Stackdriver's Span
/// According to <see href="https://cloud.google.com/trace/docs/reference/v2/rpc/google.devtools.cloudtrace.v2"/> specifications.
/// </summary>
/// <param name="spanData">Span in OpenTelemetry format.</param>
/// <param name="projectId">Google Cloud Platform Project Id.</param>
/// <returns><see cref="TelemetrySpan"/>.</returns>
public static Google.Cloud.Trace.V2.Span ToSpan(this SpanData spanData, string projectId)
{
var spanId = spanData.Context.SpanId.ToHexString();
// Base span settings
var span = new Google.Cloud.Trace.V2.Span
{
SpanName = new SpanName(projectId, spanData.Context.TraceId.ToHexString(), spanId),
SpanId = spanId,
DisplayName = new TruncatableString {
Value = spanData.Name
},
StartTime = spanData.StartTimestamp.ToTimestamp(),
EndTime = spanData.EndTimestamp.ToTimestamp(),
ChildSpanCount = null,
};
if (spanData.ParentSpanId != null)
{
var parentSpanId = spanData.ParentSpanId.ToHexString();
if (!string.IsNullOrEmpty(parentSpanId))
{
span.ParentSpanId = parentSpanId;
}
}
// Span Links
if (spanData.Links != null)
{
span.Links = new Google.Cloud.Trace.V2.Span.Types.Links
{
Link = { spanData.Links.Select(l => l.ToLink()) },
};
}
// Span Attributes
if (spanData.Attributes != null)
{
span.Attributes = new Google.Cloud.Trace.V2.Span.Types.Attributes
{
AttributeMap =
{
spanData.Attributes?.ToDictionary(
s => s.Key,
s => s.Value?.ToAttributeValue()),
},
};
}
// StackDriver uses different labels that are used to categorize spans
// replace attribute keys with StackDriver version
foreach (var entry in labelsToReplace)
{
if (span.Attributes.AttributeMap.TryGetValue(entry.Key, out var attrValue))
{
span.Attributes.AttributeMap.Remove(entry.Key);
span.Attributes.AttributeMap.Add(entry.Value, attrValue);
}
}
return(span);
}