[jclouds] branch master updated: JCLOUDS-1371: JCLOUDS-1488: optimize fs prefix

[ga...@apache.org]

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gaul pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/jclouds.git


The following commit(s) were added to refs/heads/master by this push:
     new e478dd5452 JCLOUDS-1371: JCLOUDS-1488: optimize fs prefix
e478dd5452 is described below

commit e478dd5452d70a5ea2082337b05ad91f331f0eb6
Author: Andrew Gaul <ga...@apache.org>
AuthorDate: Mon Dec 26 15:39:27 2022 +0900

    JCLOUDS-1371: JCLOUDS-1488: optimize fs prefix
    
    This reduces the number of stat calls required when prefix is deep in the
    filesystem hierarchy.  Further optimizations to delimiter are possible.
    References gaul/s3proxy#473.
---
 .../strategy/internal/FilesystemStorageStrategyImpl.java          | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/apis/filesystem/src/main/java/org/jclouds/filesystem/strategy/internal/FilesystemStorageStrategyImpl.java b/apis/filesystem/src/main/java/org/jclouds/filesystem/strategy/internal/FilesystemStorageStrategyImpl.java
index f34b3aaf7c..92216f1b10 100644
--- a/apis/filesystem/src/main/java/org/jclouds/filesystem/strategy/internal/FilesystemStorageStrategyImpl.java
+++ b/apis/filesystem/src/main/java/org/jclouds/filesystem/strategy/internal/FilesystemStorageStrategyImpl.java
@@ -353,6 +353,14 @@ public class FilesystemStorageStrategyImpl implements LocalStorageStrategy {
 
       File containerFile = openFolder(container);
       final int containerPathLength = containerFile.getAbsolutePath().length() + 1;
+      if (prefix != null) {
+         // prefix may end with a partial directory so only list the complete parent
+         int index = prefix.lastIndexOf('/');
+         if (index != -1) {
+            containerFile = new File(containerFile, prefix.substring(0, index + 1));
+         }
+      }
+
       populateBlobKeysInContainer(containerFile, blobNames, prefix, new Function<String, String>() {
          @Override
          public String apply(String string) {