FFImageLoading : Caching

hdknr / note

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FFImageLoading.Shared/Cache/DownloadCache.cs

        public async Task<CacheStream> GetStreamAsync(string url, CancellationToken token, TimeSpan? duration = null, string key = null)
        {
            /// keyがないのでURLのMD5

            string filename = string.IsNullOrWhiteSpace(key) ? _md5Helper.MD5(url) : _md5Helper.MD5(key);
            string basePath = await _diskCache.GetBasePathAsync().ConfigureAwait(false);
            string filepath = basePath == null ? filename : Path.Combine(basePath, filename);
            var diskStream = await _diskCache.TryGetStreamAsync(filename).ConfigureAwait(false);
            if (diskStream != null)
                return new CacheStream(diskStream, true);

            var memoryStream = await DownloadStreamAndCacheAsync(url, filename, filepath, token, duration).ConfigureAwait(false);
            return new CacheStream(memoryStream, false);
        }

FFImageLoading.Shared/Cache/DiskCache.cs

        public async Task<Stream> TryGetStreamAsync(string key)
        {
            // key  "b3415227e41fe379a31986f2bd8dd517"  
            key = SanitizeKey(key);

            await WaitForPendingWriteIfExists(key).ConfigureAwait(false);

            if (!entries.ContainsKey(key))
                return null;

            // basePath "/data/data/com.c1rus.ImageLoading.Sample/cache/ImageService"           try
            {
                string filepath = Path.Combine(basePath, key);
                return FileStore.GetInputStream(filepath);
            }
            catch
            {
                return null;
            }   
        }

$ ls -al total 168 drwxr-xr-x+ 4 hide staff 136 2 22 17:33 . drwxr-xr-x+ 3 hide staff 102 2 22 17:08 .. -rw-r--r--+ 1 hide staff 888 2 22 17:33 .journal -rw-r--r--+ 1 hide staff 81189 2 22 17:33 96ebb8e99a9eed11be91491adf8de2ba

$ more .journal <U+FEFF>MONOID 1.0 c 96ebb8e99a9eed11be91491adf8de2ba 635917253065387720 1000 c 96ebb8e99a9eed11be91491adf8de2ba 635917253623538660 1000 c 96ebb8e99a9eed11be91491adf8de2ba 635917254081805970 1000 c 96ebb8e99a9eed11be91491adf8de2ba 635917256493376460 1000 c 96ebb8e99a9eed11be91491adf8de2ba 635917260143744540 2592000000 c 96ebb8e99a9eed11be91491adf8de2ba 635917260476812730 2592000000 c 96ebb8e99a9eed11be91491adf8de2ba 635917260668045900 2592000000 c 96ebb8e99a9eed11be91491adf8de2ba 635917260944484040 2592000000 c 96ebb8e99a9eed11be91491adf8de2ba 635917261325326790 2592000000 c 96ebb8e99a9eed11be91491adf8de2ba 635917262404934230 2592000000 c 96ebb8e99a9eed11be91491adf8de2ba 635917263039861720 2592000000 c 96ebb8e99a9eed11be91491adf8de2ba 635917263445101880 2592000000 c 96ebb8e99a9eed11be91491adf8de2ba 635917264499346070 1000 c 96ebb8e99a9eed11be91491adf8de2ba 635917268191302560 1000

hdknr / note

FFImageLoading : Caching #4