From 81ea8bd5ceb3dcae6af0b79c81a39ecbf2ba97a8 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Tue, 27 Mar 2018 22:16:01 +0200
Subject: Simplify the callback mechanism

---
 src/libstore/remote-store.cc | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

(limited to 'src/libstore/remote-store.cc')

diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index a157c6c48582..b72c940cdcf9 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -294,10 +294,9 @@ void RemoteStore::querySubstitutablePathInfos(const PathSet & paths,
 
 
 void RemoteStore::queryPathInfoUncached(const Path & path,
-    std::function<void(std::shared_ptr<ValidPathInfo>)> success,
-    std::function<void(std::exception_ptr exc)> failure)
+    Callback<std::shared_ptr<ValidPathInfo>> callback)
 {
-    sync2async<std::shared_ptr<ValidPathInfo>>(success, failure, [&]() {
+    try {
         auto conn(connections->get());
         conn->to << wopQueryPathInfo << path;
         try {
@@ -324,8 +323,8 @@ void RemoteStore::queryPathInfoUncached(const Path & path,
             info->sigs = readStrings<StringSet>(conn->from);
             conn->from >> info->ca;
         }
-        return info;
-    });
+        callback(std::move(info));
+    } catch (...) { callback.rethrow(); }
 }
 
 
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