Best effort to support apollo graphql from requests (#174)

platform/swift/source/logging/HTTPRequestInfo.swift

@@ -15,6 +15,9 @@ enum HTTPFieldKey: String {
     case path = "_path"
     case pathTemplate = "_path_template"
     case query = "_query"
+    case graphQLOperationName = "_operation_name"
+    case graphQLOperationType = "_operation_type"
+    case graphQLOperationID = "_operation_id"
 }
 
 /// An object representing an HTTP request.
@@ -80,6 +83,23 @@ public struct HTTPRequestInfo {
                 String(describing: bytesExpectedToSendCount)
         }
 
+        // Best effort to extract graphQL operation name from the headers, this is specific
+        // to Apollo iOS client.
+        if let headers = self.headers {
+            if let operationName = headers["X-APOLLO-OPERATION-NAME"] {
+                fields[HTTPFieldKey.graphQLOperationName.rawValue] = operationName
+                fields[HTTPFieldKey.pathTemplate.rawValue] = "gql-\(operationName)"
+            }
+
+            if let operationType = headers["X-APOLLO-OPERATION-TYPE"] {
+                fields[HTTPFieldKey.graphQLOperationType.rawValue] = operationType
+            }
+
+            if let operationID = headers["X-APOLLO-OPERATION-ID"] {
+                fields[HTTPFieldKey.graphQLOperationID.rawValue] = operationID
+            }
+        }
+
         return fields
     }