Updated subtree from https://github.com/azure/azure-functions-language-worker-protobuf. Tag: v1.3.5-protofile. Commit: a12f763

Author: yojagad

src/WebJobs.Script.Grpc/azure-functions-language-worker-protobuf/README.md

@@ -1,6 +1,6 @@
 # Azure Functions Languge Worker Protobuf
 
-This repository contains the protobuf definition file which defines the gRPC service which is used between the Azure WebJobs Script host and the Azure Functions language workers. This repo is shared across many repos in many languages (for each worker) by using git commands.
+This repository contains the protobuf definition file which defines the gRPC service which is used between the [Azure Functions Host](https://github.com/Azure/azure-functions-host) and the Azure Functions language workers. This repo is shared across many repos in many languages (for each worker) by using git commands.
 
 To use this repo in Azure Functions language workers, follow steps below to add this repo as a subtree (*Adding This Repo*). If this repo is already embedded in a language worker repo, follow the steps to update the consumed file (*Pulling Updates*).
 

src/WebJobs.Script.Grpc/azure-functions-language-worker-protobuf/src/proto/FunctionRpc.proto

@@ -255,6 +255,21 @@ message InvocationRequest {
 
   // binding metadata from trigger
   map<string, TypedData> trigger_metadata = 4;
+
+  // Populates activityId, tracestate and tags from host
+  RpcTraceContext trace_context = 5;
+}
+
+// Host sends ActivityId, traceStateString and Tags from host
+message RpcTraceContext {
+	// This corresponds to Activity.Current?.Id
+	string trace_parent = 1;
+
+	// This corresponds to Activity.Current?.TraceStateString
+	string trace_state = 2;
+
+	// This corresponds to Activity.Current?.Tags
+	map<string, string> attributes = 3;
 }
 
 // Host requests worker to cancel invocation
@@ -368,6 +383,12 @@ message RpcLog {
     None = 6;
   }
 
+  // Category of the log. Defaults to User if not specified.
+  enum RpcLogCategory {
+	User = 0;
+	System = 1;
+  }
+
   // Unique id for invocation (if exists)
   string invocation_id = 1;
 
@@ -389,6 +410,9 @@ message RpcLog {
 
   // json serialized property bag, or could use a type scheme like map<string, TypedData>
   string properties = 7;
+
+  // Category of the log. Either user(default) or system.
+  RpcLogCategory log_category = 8;
 }
 
 // Encapsulates an Exception 
@@ -399,7 +423,7 @@ message RpcException {
   // Stack trace for the exception
   string stack_trace = 1;
 
-  // Textual message describing hte exception
+  // Textual message describing the exception
   string message = 2;
 }