From: Samuel Just <sjust@redhat.com>
Date: Fri, 17 Jan 2020 20:31:02 +0000 (-0800)
Subject: crimson/common/errorator: add pass_further and discard to unthrowable_wrapper
X-Git-Tag: v15.1.1~387^2~3
X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=a3bb1ddc601904e608fec2f8454f7b4edcf7d2cb;p=ceph-ci.git

crimson/common/errorator: add pass_further and discard to unthrowable_wrapper

This lets us use, for instance, ct_error::enoent::pass_further{} to
explicitely propogate enoent.

Signed-off-by: Samuel Just <sjust@redhat.com>
---

diff --git a/src/crimson/common/errorator.h b/src/crimson/common/errorator.h
index e4bdf455d8d..0d2f3ccde50 100644
--- a/src/crimson/common/errorator.h
+++ b/src/crimson/common/errorator.h
@@ -99,6 +99,18 @@ struct unthrowable_wrapper : error_t<unthrowable_wrapper<ErrorT, ErrorV>> {
     };
   }
 
+  struct pass_further {
+    decltype(auto) operator()(const unthrowable_wrapper& e) {
+      return e;
+    }
+  };
+
+  struct discard {
+    decltype(auto) operator()(const unthrowable_wrapper&) {
+    }
+  };
+
+
 private:
   // can be used only to initialize the `instance` member
   explicit unthrowable_wrapper() = default;