public async Task Delete()
{
await FileStreamer.Delete(Filename);
MockFile.Verify(x => x.Delete(Filename), Times.Once);
}
public async Task <bool> Unindex <TDataType>(TDataType data) where TDataType : DataEntity
{
using (_logger.BeginScope("{Operation} is {Action} for {DataType}", nameof(FileIndexWorker), "unindexing",
typeof(TDataType).Name))
{
var indexProperties = typeof(TDataType)
.GetProperties()
.Where(x => x.GetCustomAttributes(typeof(IndexAttribute), true).Any())
.ToArray();
if (!indexProperties.Any())
{
_logger.LogTrace("There are no properties are indexed");
return(true);
}
_logger.LogInformation("Starting to unindex");
var unindexSuccess = true;
foreach (var indexProperty in indexProperties)
{
var indexName = indexProperty.Name;
_logger.LogTrace("Unindexing {IndexName}", indexName);
if (await IndexExist <TDataType>(indexName))
{
_logger.LogTrace("Index exists");
var indexFileName = GetFileName <TDataType>(indexName);
using (_logger.BeginScope("The index file {filename} will be used", indexFileName))
{
var index = await FileStreamer.ReadDataFromStream <Index <object> >(indexFileName);
_logger.LogTrace("Loaded index data");
if (index.Keys is null)
{
_logger.LogWarning("There are no keys in the index");
continue;
}
var keys = index.Keys
.Where(x => x.Ids.Any(y => y == data.Id))
.ToArray();
if (!keys.Any())
{
_logger.LogInformation("There where no keys with the data's Id indexes against it.");
continue;
}
foreach (var key in keys)
{
key.Ids.Remove(data.Id);
_logger.LogTrace("Removed id from index key");
if (!key.Ids.Any())
{
index.Keys.Remove(key);
_logger.LogTrace("No more ids against the key removed the key from the index");
}
}
if (index.Keys.Any())
{
_logger.LogTrace("The index still has some keys");
if (await FileStreamer.WriteDataToStream(indexFileName, index))
{
_logger.LogTrace("Successfully wrote index to the index file");
if (!await FileStreamer.CloseStream(indexFileName))
{
_logger.LogWarning("Failed to save the index to disk");
unindexSuccess = false;
}
else
{
_logger.LogInformation("Index updated");
}
}
else
{
_logger.LogWarning("Failed to write data to the file");
unindexSuccess = false;
}
}
else
{
_logger.LogTrace("No more keys in the index");
if (!await FileStreamer.Delete(indexFileName))
{
_logger.LogWarning("Failed to remove index file");
unindexSuccess = false;
}
else
{
_logger.LogInformation("Removed index file");
}
}
}
}
else
{
_logger.LogTrace("Index doesn't exist");
}
}
if (unindexSuccess)
{
_logger.LogInformation("Unindex data successfully");
}
else
{
_logger.LogWarning("Failed to unindex data");
}
return(unindexSuccess);
}
}