_artifactcache: Rename update_atime() to update_mtime()

os.utime() updates both, however, list_artifacts() sorts refs by mtime,
i.e., atime is irrelevant.

2 files changed, 7 insertions, 7 deletions

diff --git a/buildstream/_artifactcache/artifactcache.py b/buildstream/_artifactcache/artifactcache.py
index 7977691c0..c6c8afa80 100644
--- a/buildstream/_artifactcache/artifactcache.py
+++ b/buildstream/_artifactcache/artifactcache.py
@@ -228,7 +228,7 @@ class ArtifactCache():
         self._required_elements.update(elements)
 
         # For the cache keys which were resolved so far, we bump
-        # the atime of them.
+        # the mtime of them.
         #
         # This is just in case we have concurrent instances of
         # BuildStream running with the same artifact cache, it will
@@ -240,7 +240,7 @@ class ArtifactCache():
             for key in (strong_key, weak_key):
                 if key:
                     try:
-                        self.update_atime(key)
+                        self.update_mtime(key)
                     except ArtifactError:
                         pass
 
@@ -391,15 +391,15 @@ class ArtifactCache():
     def preflight(self):
         pass
 
-    # update_atime()
+    # update_mtime()
     #
-    # Update the atime of an artifact.
+    # Update the mtime of an artifact.
     #
     # Args:
     #     key (str): The key of the artifact.
     #
-    def update_atime(self, key):
-        raise ImplError("Cache '{kind}' does not implement contains()"
+    def update_mtime(self, key):
+        raise ImplError("Cache '{kind}' does not implement update_mtime()"
                         .format(kind=type(self).__name__))
 
     # initialize_remotes():
diff --git a/buildstream/_artifactcache/cascache.py b/buildstream/_artifactcache/cascache.py
index ed6d58821..8fb2e8b01 100644
--- a/buildstream/_artifactcache/cascache.py
+++ b/buildstream/_artifactcache/cascache.py
@@ -538,7 +538,7 @@ class CASCache(ArtifactCache):
         except FileNotFoundError as e:
             raise ArtifactError("Attempt to access unavailable artifact: {}".format(e)) from e
 
-    def update_atime(self, ref):
+    def update_mtime(self, ref):
         try:
             os.utime(self._refpath(ref))
         except FileNotFoundError as e: