internal static Proto.Trace.V1.Span ToProtoSpan(this Trace.Span otelSpan)
{
try
{
// protobuf doesn't understand Span<T> yet: https://github.com/protocolbuffers/protobuf/issues/3431
Span <byte> traceIdBytes = stackalloc byte[16];
Span <byte> spanIdBytes = stackalloc byte[8];
otelSpan.Context.TraceId.CopyTo(traceIdBytes);
otelSpan.Context.SpanId.CopyTo(spanIdBytes);
var parentSpanIdString = ByteString.Empty;
if (otelSpan.ParentSpanId != default)
{
Span <byte> parentSpanIdBytes = stackalloc byte[8];
otelSpan.ParentSpanId.CopyTo(parentSpanIdBytes);
parentSpanIdString = ByteString.CopyFrom(parentSpanIdBytes.ToArray());
}
return(new Proto.Trace.V1.Span
{
Name = new TruncatableString {
Value = otelSpan.Name
},
// TODO: Utilize new Span.Types.SpanKind below when updated protos are incorporated, also confirm default for SpanKind.Internal
Kind = otelSpan.Kind == SpanKind.Client || otelSpan.Kind == SpanKind.Producer ?
Proto.Trace.V1.Span.Types.SpanKind.Client :
Proto.Trace.V1.Span.Types.SpanKind.Server,
TraceId = ByteString.CopyFrom(traceIdBytes.ToArray()),
SpanId = ByteString.CopyFrom(spanIdBytes.ToArray()),
ParentSpanId = parentSpanIdString,
StartTime = otelSpan.StartTimestamp.ToTimestamp(),
EndTime = otelSpan.EndTimestamp.ToTimestamp(),
Status = !otelSpan.Status.IsValid
? null
: new OpenTelemetry.Proto.Trace.V1.Status
{
Code = (int)otelSpan.Status.CanonicalCode,
Message = otelSpan.Status.Description ?? string.Empty,
},
SameProcessAsParentSpan = otelSpan.ParentSpanId != default,
ChildSpanCount = null,
Attributes = FromAttributes(otelSpan.Attributes),
TimeEvents = FromITimeEvents(otelSpan.Events),
Links = new Proto.Trace.V1.Span.Types.Links
{
Link = { otelSpan.Links.Select(FromILink), },
},
});
}
/// <summary>
/// Translating <see cref="Trace.Span"/> 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 Trace.Span 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 => FormatLabel(s.Key),
s => s.Value?.ToAttributeValue()),
},
};
}
return(span);
}
internal static Proto.Trace.V1.Span ToProtoSpan(this Trace.Span otelSpan)
{
try
{
// protobuf doesn't understand Span<T> yet: https://github.com/protocolbuffers/protobuf/issues/3431
Span <byte> traceIdBytes = stackalloc byte[16];
Span <byte> spanIdBytes = stackalloc byte[8];
otelSpan.Context.TraceId.CopyTo(traceIdBytes);
otelSpan.Context.SpanId.CopyTo(spanIdBytes);
var parentSpanIdString = ByteString.Empty;
if (otelSpan.ParentSpanId != default)
{
Span <byte> parentSpanIdBytes = stackalloc byte[8];
otelSpan.ParentSpanId.CopyTo(parentSpanIdBytes);
parentSpanIdString = ByteString.CopyFrom(parentSpanIdBytes.ToArray());
}
return(new Proto.Trace.V1.Span
{
Name = otelSpan.Name,
// TODO: Utilize new Span.Types.SpanKind below when updated protos are incorporated, also confirm default for SpanKind.Internal
Kind = otelSpan.Kind == SpanKind.Client || otelSpan.Kind == SpanKind.Producer ?
Proto.Trace.V1.Span.Types.SpanKind.Client :
Proto.Trace.V1.Span.Types.SpanKind.Server,
TraceId = ByteString.CopyFrom(traceIdBytes.ToArray()),
SpanId = ByteString.CopyFrom(spanIdBytes.ToArray()),
ParentSpanId = parentSpanIdString,
StartTime = otelSpan.StartTimestamp.ToTimestamp(),
EndTime = otelSpan.EndTimestamp.ToTimestamp(),
Status = !otelSpan.Status.IsValid
? null
: new Opentelemetry.Proto.Trace.V1.Status
{
Code = (int)otelSpan.Status.CanonicalCode,
Message = otelSpan.Status.Description ?? string.Empty,
},
ChildSpanCount = null,
Attributes = FromAttributes(otelSpan.Attributes),
TimeEvents = FromITimeEvents(otelSpan.Events),
Links = new Proto.Trace.V1.Span.Types.Links
{
Link = { otelSpan.Links.Select(FromILink), },
},
});
}
catch (Exception e)
{
// TODO: Is there a way to handle this better?
// This type of error processing is very aggressive and doesn't follow the
// error handling practices when smart defaults should be used when possible.
// See: https://github.com/open-telemetry/OpenTelemetry-dotnet/blob/master/docs/error-handling.md
ExporterEventSource.Log.FailedToConvertToProtoDefinitionError(e);
}
return(null);
}