pass client request info into EdenFs

Summary:
pass client request info into EdenFs

create an equivalent thrift type to the ClientRequestInfo type

we have to use thrift params (adding a new field into existing params) since thrift headers are not supported in the underlying transport used (tried in D49635948).

SocketTransport relies on FramedTransport which only transfers a payload, but no header metadata per frame.

Reviewed By: genevievehelsel

Differential Revision: D49656897

fbshipit-source-id: ac8b1ac22b20470cce903552c46672081478b59d

eden/fs/service/eden.thrift

@@ -1022,6 +1022,11 @@ struct RequestInfo {
   2: optional string processName;
 }
 
+struct ClientRequestInfo {
+  1: string correlator;
+  2: string entry_point;
+}
+
 enum HgEventType {
   UNKNOWN = 0,
   QUEUE = 1,
@@ -1464,6 +1469,9 @@ struct GetScmStatusParams {
    * directory) will never be reported even when listIgnored is true.
    */
   3: bool listIgnored = false;
+
+  // Pass unique identifier of this request's caller.
+  4: optional ClientRequestInfo cri;
 }
 
 /**
@@ -1514,6 +1522,9 @@ struct CheckOutRevisionParams {
    * need to look it up.
    */
   1: optional BinaryHash hgRootManifest;
+
+  // Pass unique identifier of this request's caller.
+  2: optional ClientRequestInfo cri;
 }
 
 struct ResetParentCommitsParams {
@@ -1528,6 +1539,9 @@ struct ResetParentCommitsParams {
    * need to look it up.
    */
   1: optional BinaryHash hgRootManifest;
+
+  // Pass unique identifier of this request's caller.
+  2: optional ClientRequestInfo cri;
 }
 
 struct RemoveRecursivelyParams {