public async Task ReplaceRelativePathAndUpdateLastDeletion(ICacheDatabaseRecord record,
string movedRelativePath,
DateTime lastDeletionAttempt)
{
var newRecord = new CacheDatabaseRecord()
{
AccessCountKey = record.AccessCountKey,
ContentType = record.ContentType,
CreatedAt = record.CreatedAt,
DiskSize = record.DiskSize,
LastDeletionAttempt = lastDeletionAttempt,
RelativePath = movedRelativePath
};
var loadedDict = await GetLoadedDict();
if (loadedDict.TryAdd(movedRelativePath, newRecord))
{
await writeLog.LogCreated(newRecord);
}
else
{
throw new InvalidOperationException("Record already moved in database");
}
await DeleteRecord(record);
}
public async Task <bool> CreateRecordIfSpace(string relativePath, string contentType, long recordDiskSpace,
DateTime createdDate,
int accessCountKey, long diskSpaceLimit)
{
// Lock so multiple writers can't get past the capacity check simultaneously
using (await createLock.LockAsync())
{
var loadedDict = await GetLoadedDict();
var extraLogBytes = GetLogBytesOverhead(relativePath.Length + (contentType?.Length ?? 0));
var existingDiskUsage = await GetShardSize();
if (existingDiskUsage + recordDiskSpace + extraLogBytes > diskSpaceLimit)
{
//logger?.LogInformation("Refusing new {RecordDiskSpace} byte record in shard {ShardId} of MetaStore",
// recordDiskSpace, shardId);
return(false);
}
var newRecord = new CacheDatabaseRecord()
{
AccessCountKey = accessCountKey,
ContentType = contentType,
CreatedAt = createdDate,
DiskSize = recordDiskSpace,
LastDeletionAttempt = DateTime.MinValue,
RelativePath = relativePath
};
if (loadedDict.TryAdd(relativePath, newRecord))
{
await writeLog.LogCreated(newRecord);
}
else
{
logger?.LogWarning("CreateRecordIfSpace did nothing - database entry already exists - {Path}", relativePath);
}
}
return(true);
}
public Task LogUpdated(CacheDatabaseRecord updatedRecord)
{
return(WriteLogEntry(new LogEntry(LogEntryType.Update, updatedRecord), false));
}
public Task LogCreated(CacheDatabaseRecord newRecord)
{
// We flush created entries through to disk right away so we don't orphan disk blobs
return(WriteLogEntry(new LogEntry(LogEntryType.Create, newRecord), true));
}