BREAKING CHANGE: Refactor to use OTEL messages (#11)

* Modified to depend on opentelemetry-proto.
* Added `FlatSpan` to flatten out `TracesData`.
* Avoids having a separate, matching `Span` data structure.

.gitignore

@@ -406,6 +406,9 @@ FodyWeavers.xsd
 **/.idea/shelf/*
 **/.idea/dictionaries
 **/.idea/httpRequests/
+**/.idea/encodings.xml
+**/.idea/indexLayout.xml
+**/.idea/projectSettingsUpdater.xml
 
 # Sensitive or high-churn files
 **/.idea/**/dataSources/
@@ -422,4 +425,7 @@ FodyWeavers.xsd
 **/.idea/**/modules.xml
 
 # Mac stuff
-.DS_Store
+.DS_Store
+
+# Protobuf selected output directory
+out

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "submodules"]
+	path = submodules
+	url = https://github.com/open-telemetry/opentelemetry-proto.git

odddotproto/proto/trace/v1/flat_span.proto

@@ -0,0 +1,17 @@
+syntax = "proto3";
+
+package odddotnet.proto.trace.v1;
+
+option csharp_namespace = "OddDotNet.Proto.Trace.V1";
+
+import "opentelemetry/proto/trace/v1/trace.proto";
+import "opentelemetry/proto/resource/v1/resource.proto";
+import "opentelemetry/proto/common/v1/common.proto";
+
+message FlatSpan {
+    opentelemetry.proto.trace.v1.Span span = 1;
+    opentelemetry.proto.resource.v1.Resource resource = 2;
+    opentelemetry.proto.common.v1.InstrumentationScope instrumentationScope = 3;
+    string resourceSchemaUrl = 4;
+    string instrumentationScopeSchemaUrl = 5;
+}

proto/spans/v1/span_query_request.proto → odddotproto/proto/trace/v1/span_query_request.proto

@@ -1,14 +1,10 @@
 syntax = "proto3";
 
-package odddotnet.proto.spans.v1;
+package odddotnet.proto.trace.v1;
 
-option csharp_namespace = "OddDotNet.Proto.Spans.V1";
-option java_multiple_files = true;
-option java_package = "com.odddotnet.proto.spans.v1";
-option java_outer_classname = "SpansProto";
-option go_package = "go.odddotnet.com/proto/otlp/spans/v1";
+option csharp_namespace = "OddDotNet.Proto.Trace.V1";
 
-import "proto/spans/v1/span.proto";
+import "opentelemetry/proto/trace/v1/trace.proto";
 
 message SpanQueryRequest {
   repeated WhereSpanFilter filters = 1;
@@ -119,12 +115,12 @@ message DoubleProperty {
 
 message SpanStatusCodeProperty {
   EnumCompareAsType compareAs = 1;
-  SpanStatusCode compare = 2;
+  opentelemetry.proto.trace.v1.Status.StatusCode compare = 2;
 }
 
 message SpanKindProperty {
   EnumCompareAsType compareAs = 1;
-  SpanKind compare = 2;
+  opentelemetry.proto.trace.v1.Span.SpanKind compare = 2;
 }
 
 message KeyValueProperty {

odddotproto/proto/trace/v1/span_query_response.proto

@@ -0,0 +1,11 @@
+syntax = "proto3";
+
+package odddotnet.proto.trace.v1;
+
+option csharp_namespace = "OddDotNet.Proto.Trace.V1";
+
+import "flat_span.proto";
+
+message SpanQueryResponse {
+  repeated FlatSpan spans = 1;
+}

odddotproto/proto/trace/v1/span_query_service.proto

@@ -0,0 +1,15 @@
+syntax = "proto3";
+
+package odddotnet.proto.trace.v1;
+
+option csharp_namespace = "OddDotNet.Proto.Trace.V1";
+
+import "span_query_request.proto";
+import "span_query_response.proto";
+import "span_reset_request.proto";
+import "span_reset_response.proto";
+
+service SpanQueryService {
+  rpc Query(SpanQueryRequest) returns (SpanQueryResponse);
+  rpc Reset(SpanResetRequest) returns (SpanResetResponse); 
+}

odddotproto/proto/trace/v1/span_reset_request.proto

@@ -0,0 +1,7 @@
+syntax = "proto3";
+
+package odddotnet.proto.trace.v1;
+
+option csharp_namespace = "OddDotNet.Proto.Trace.V1";
+
+message SpanResetRequest{}

odddotproto/proto/trace/v1/span_reset_response.proto

@@ -0,0 +1,7 @@
+syntax = "proto3";
+
+package odddotnet.proto.trace.v1;
+
+option csharp_namespace = "OddDotNet.Proto.Trace.V1";
+
+message SpanResetResponse{}