From 2acd2692251d5b45f2628034ebf68b97933496d4 Mon Sep 17 00:00:00 2001
From: Kai Reinhard <K.Reinhard@micromata.de>
Date: Mon, 10 Dec 2018 21:31:06 +0000
Subject: [PATCH] ...

---
 borgbutler-core/src/main/java/de/micromata/borgbutler/cache/ArchiveFilelistCache.java     |   31 +++++++++++++++++++++++--------
 borgbutler-core/src/test/java/de/micromata/borgbutler/cache/ArchiveFilelistCacheTest.java |   18 ++++++++++++++++++
 2 files changed, 41 insertions(+), 8 deletions(-)

diff --git a/borgbutler-core/src/main/java/de/micromata/borgbutler/cache/ArchiveFilelistCache.java b/borgbutler-core/src/main/java/de/micromata/borgbutler/cache/ArchiveFilelistCache.java
index 0116df0..2fcd07d 100644
--- a/borgbutler-core/src/main/java/de/micromata/borgbutler/cache/ArchiveFilelistCache.java
+++ b/borgbutler-core/src/main/java/de/micromata/borgbutler/cache/ArchiveFilelistCache.java
@@ -1,7 +1,5 @@
 package de.micromata.borgbutler.cache;
 
-import com.fasterxml.jackson.annotation.JsonIgnore;
-import com.fasterxml.jackson.annotation.JsonProperty;
 import de.micromata.borgbutler.config.BorgRepoConfig;
 import de.micromata.borgbutler.json.borg.Archive;
 import de.micromata.borgbutler.json.borg.FilesystemItem;
@@ -18,13 +16,12 @@
 
 class ArchiveFilelistCache {
     private static Logger log = LoggerFactory.getLogger(ArchiveFilelistCache.class);
-    public static final String CACHE_ARCHIVE_LISTS_BASENAME = "archive-content-";
+    private static final String CACHE_ARCHIVE_LISTS_BASENAME = "archive-content-";
+    private static final String CACHE_FILE_GZIP_EXTENSION = "gz";
     private File cacheDir;
 
-    @JsonIgnore
     @Getter
     private Archive archive;
-    @JsonProperty
     private List<FilesystemItem> content;
 
     public void save(BorgRepoConfig repoConfig, Archive archive, List<FilesystemItem> filesystemItems) {
@@ -77,13 +74,31 @@
         return list;
     }
 
-    private File getFile(BorgRepoConfig repoConfig, Archive archive) {
-        return new File(cacheDir, ReplaceUtils.encodeFilename(CACHE_ARCHIVE_LISTS_BASENAME + "-"
-                + repoConfig.getRepo() + "-" + archive.getArchive() + ".gz", true));
+    /**
+     * Deletes archive contents older than 7 days and deletes the oldest archive contents if the max cache size is
+     * exceeded.
+     */
+    public void cleanUp() {
+        File[] files = cacheDir.listFiles();
+        for (File file : files) {
+            if (isCacheFile(file)) {
+                log.info("Processing cache file: " + file.getAbsolutePath());
+                //file.delete();
+            }
+        }
+    }
+
+    File getFile(BorgRepoConfig repoConfig, Archive archive) {
+        return new File(cacheDir, ReplaceUtils.encodeFilename(CACHE_ARCHIVE_LISTS_BASENAME + archive.getTime()
+                + "-" + repoConfig.getRepo() + "-" + archive.getArchive() + ".gz", true));
     }
 
     ArchiveFilelistCache(File cacheDir) {
         this.cacheDir = cacheDir;
     }
+
+    private boolean isCacheFile(File file) {
+        return file.getName().startsWith(CACHE_ARCHIVE_LISTS_BASENAME);
+    }
 }
 
diff --git a/borgbutler-core/src/test/java/de/micromata/borgbutler/cache/ArchiveFilelistCacheTest.java b/borgbutler-core/src/test/java/de/micromata/borgbutler/cache/ArchiveFilelistCacheTest.java
index 993043f..9a85eec 100644
--- a/borgbutler-core/src/test/java/de/micromata/borgbutler/cache/ArchiveFilelistCacheTest.java
+++ b/borgbutler-core/src/test/java/de/micromata/borgbutler/cache/ArchiveFilelistCacheTest.java
@@ -13,6 +13,7 @@
 import java.util.List;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
 
 
 public class ArchiveFilelistCacheTest {
@@ -41,6 +42,23 @@
         }
     }
 
+    @Test
+    void readWriteEmptyTest() throws Exception {
+        List<FilesystemItem> list = new ArrayList<>();
+        ArchiveFilelistCache cache = new ArchiveFilelistCache(new File("out"));
+        BorgRepoConfig repoConfig = new BorgRepoConfig();
+        repoConfig.setRepo("repo");
+        Archive archive = new Archive();
+        set(archive, "archive", "archive-2018-12-09");
+        if (cache.getFile(repoConfig, archive).exists()) {
+            cache.getFile(repoConfig, archive).delete();
+        }
+        assertNull(cache.load(repoConfig, archive));
+        cache.save(repoConfig, archive, list);
+        FilesystemItem[] filesystemItems = cache.load(repoConfig, archive);
+        assertNull(cache.load(repoConfig, archive));
+    }
+
     private FilesystemItem create(int i) throws Exception {
         FilesystemItem item = new FilesystemItem();
         set(item, "type", "-").set(item, "mode", "drwxr-xr-x")

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