Add api_v3.GetDependenciesResponse and api_v3.GetDependenciesRequest

Signed-off-by: Sujal Shah <sujalshah28092004@gmail.com>

Author: sujalshah-bit

proto/api_v3/query_service.proto

@@ -136,6 +136,22 @@ message GetOperationsResponse {
   repeated Operation operations = 1;
 }
 
+message GetDependenciesRequest {
+  google.protobuf.Timestamp end_time = 1;
+  google.protobuf.Duration lookback = 2;
+}
+
+message DependencyLink {
+  string parent = 1;
+  string child = 2;
+  uint64 call_count = 3;
+}
+
+message GetDependenciesResponse {
+  repeated DependencyLink dependencies = 1;
+}
+
+
 service QueryService {
   // GetTrace returns a single trace.
   // Note that the JSON response over HTTP is wrapped into result envelope "{"result": ...}"
@@ -153,6 +169,10 @@ service QueryService {
 
   // GetOperations returns operation names.
   rpc GetOperations(GetOperationsRequest) returns (GetOperationsResponse) {}
+
+  // GetDependencies returns dependencies.
+  rpc GetDependencies(GetDependenciesRequest) returns (GetDependenciesResponse) {}
+
 }
 
 // Below are some helper types when using APIv3 via HTTP endpoints.

swagger/api_v3/query_service.swagger.json

@@ -296,6 +296,32 @@
       "description": "- STATUS_CODE_UNSET: The default status.\n - STATUS_CODE_OK: The Span has been validated by an Application developer or Operator to \nhave completed successfully.\n - STATUS_CODE_ERROR: The Span contains an error.",
       "title": "For the semantics of status codes see\nhttps://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/api.md#set-status"
     },
+    "api_v3DependencyLink": {
+      "type": "object",
+      "properties": {
+        "parent": {
+          "type": "string"
+        },
+        "child": {
+          "type": "string"
+        },
+        "call_count": {
+          "type": "string",
+          "format": "uint64"
+        }
+      }
+    },
+    "api_v3GetDependenciesResponse": {
+      "type": "object",
+      "properties": {
+        "dependencies": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/api_v3DependencyLink"
+          }
+        }
+      }
+    },
     "api_v3GetOperationsResponse": {
       "type": "object",
       "properties": {