3 files changed, 14 insertions, 0 deletions
diff --git a/src/libstore/binary-cache-store.cc b/src/libstore/binary-cache-store.cc
index 7d25e2160..6e4458f7a 100644
--- a/src/libstore/binary-cache-store.cc
+++ b/src/libstore/binary-cache-store.cc
@@ -512,4 +512,14 @@ std::optional<std::string> BinaryCacheStore::getBuildLog(const StorePath & path)
     return getFile(logPath);
 }
 
+void BinaryCacheStore::addBuildLog(const StorePath & drvPath, std::string_view log)
+{
+    assert(drvPath.isDerivation());
+
+    upsertFile(
+        "log/" + std::string(drvPath.to_string()),
+        (std::string) log, // FIXME: don't copy
+        "text/plain; charset=utf-8");
+}
+
 }
diff --git a/src/libstore/binary-cache-store.hh b/src/libstore/binary-cache-store.hh
index 46ff67c77..7599230d9 100644
--- a/src/libstore/binary-cache-store.hh
+++ b/src/libstore/binary-cache-store.hh
@@ -51,6 +51,7 @@ public:
         const std::string & mimeType) = 0;
 
     void upsertFile(const std::string & path,
+        // FIXME: use std::string_view
         std::string && data,
         const std::string & mimeType);
 
@@ -120,6 +121,8 @@ public:
 
     std::optional<std::string> getBuildLog(const StorePath & path) override;
 
+    void addBuildLog(const StorePath & drvPath, std::string_view log) override;
+
 };
 
 MakeError(NoSuchBinaryCacheFile, Error);
diff --git a/src/libstore/local-binary-cache-store.cc b/src/libstore/local-binary-cache-store.cc
index f93111fce..f754770f9 100644
--- a/src/libstore/local-binary-cache-store.cc
+++ b/src/libstore/local-binary-cache-store.cc
@@ -96,6 +96,7 @@ void LocalBinaryCacheStore::init()
     createDirs(binaryCacheDir + "/" + realisationsPrefix);
     if (writeDebugInfo)
         createDirs(binaryCacheDir + "/debuginfo");
+    createDirs(binaryCacheDir + "/log");
     BinaryCacheStore::init();
 }