ai: Add a node embedding watcher

api/proto/teleport/embedding/v1/embedding.proto

@@ -0,0 +1,40 @@
+// Copyright 2023 Gravitational, Inc
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+
+package teleport.embedding.v1;
+
+import "teleport/legacy/types/types.proto";
+
+option go_package = "github.com/gravitational/teleport/api/gen/proto/go/teleport/embedding/v1;embeddingv1";
+
+// Embedding contains a Teleport resource embedding. Embeddings are small semantic
+// representations of larger and more complex data. Embeddings can be compared,
+// the smaller the distance between two vectors, the closer the concepts are.
+// Teleport Assist embeds resources to perform semantic search.
+message Embedding {
+  // Metadata is the embedding metadata.
+  types.Metadata metadata = 1;
+
+  // Version is the embedding resource version.
+  string version = 2;
+
+  // EmbeddedHash is the hash of the embedded resource after serialization.
+  // This helps checking if the resource has changed and needs a new embedding.
+  bytes embedded_hash = 3;
+
+  // Vector is the embedding itself, as provided by the model.
+  repeated double vector = 4;
+}

constants.go

@@ -270,6 +270,9 @@ const (
 	// ComponentProxySecureGRPC represents secure gRPC server running on Proxy (used for Kube).
 	ComponentProxySecureGRPC = "proxy:secure-grpc"
 
+	// ComponentAssist represents Teleport Assist
+	ComponentAssist = "assist"
+
 	// VerboseLogEnvVar forces all logs to be verbose (down to DEBUG level)
 	VerboseLogsEnvVar = "TELEPORT_DEBUG"