/// <summary>
/// Create a volume
/// </summary>
/// <param name="createVolumeRequest">Parameters for create</param>
/// <param name="userId">User id</param>
/// <exception cref="VolumeException">If cannot create a volume</exception>
/// <returns>gRPC reply with volume id</returns>
public async Task <VolumeReply> Create(CreateVolumeRequest createVolumeRequest, string userId)
{
logger.LogInformation("Requested for creaton of a volume"); // english
string volumeId = IdentityFabric.GenVolumeId();
VolumeModel volume = VolumeAdapter.Volume(volumeId, createVolumeRequest);
logger.LogInformation($"Created the VolumeModel with Id {volumeId}");
using IConnectionMultiplexer redis = redisService.Connect();
IDatabase db = redis.GetDatabase();
logger.LogInformation($"Connected to the Redis servier");
ITransaction transaction = db.CreateTransaction();
logger.LogInformation($"Bigin transaction");
string redisKey = GetVolumeKey(userId, volumeId);
foreach (PropertyInfo propInfo in volume.GetType().GetProperties())
{
_ = transaction.HashSetAsync(redisKey, propInfo.Name, propInfo.GetValue(volume).ToString());
}
if (await transaction.ExecuteAsync() == false)
{
logger.LogError("Cannot create a volume. Transaction failed");
throw new VolumeException("Cannot create a volume");
}
logger.LogInformation($"Creansaction completed successfully");
return(VolumeAdapter.Volume(volume));
}
/// <summary>
/// Gets volume by id
/// </summary>
/// <param name="volumeId">Volume id (vol-xxxxxxxxx)</param>
/// <param name="userId">User id</param>
/// <returns></returns>
public async Task <VolumeReply> Get(string volumeId, string userId)
{
logger.LogInformation($"Searching the volume with id {volumeId}");
logger.LogDebug($"Try to connect to the Redis");
using IConnectionMultiplexer redis = redisService.Connect();
var db = redis.GetDatabase();
logger.LogDebug($"Connected to the Redis");
string redisKey = GetVolumeKey(userId, volumeId);
if (db.KeyExists(redisKey, CommandFlags.None) == false)
{
logger.LogError($"Cannot find a volume with id {redisKey}");
throw new VolumeException($"Cannot find a volume with id {redisKey}");
}
logger.LogInformation($"The volume with id {redisKey} is exists in the store. " +
$"Reqding the values..");
VolumeModel volumeModel = new VolumeModel();
foreach (PropertyInfo property in volumeModel.GetType().GetProperties())
{
RedisValue value = await db.HashGetAsync(redisKey, property.Name);
property.SetValue(volumeModel, Convert.ChangeType(value, property.PropertyType));
}
logger.LogInformation($"The volume successfully read from the store");
return(VolumeAdapter.Volume(volumeModel));
}
/// <summary>
/// List of volumes by user Id
/// </summary>
/// <param name="userId">Use Id</param>
/// <returns></returns>
public async Task <IEnumerable <VolumeReply> > List(string userId)
{
using IConnectionMultiplexer redisConnection = redisService.Connect();
var db = redisConnection.GetDatabase();
logger.LogDebug("Connected to Redis");
string redisKey = GetVolumeKey(userId);
logger.LogDebug($"Searching by key pattern: {redisKey}");
EndPoint endPoint = redisConnection.GetEndPoints().First() ?? throw new VolumeException($"Cannot find the endpoint");
RedisKey[] keys = redisConnection.GetServer(endPoint).Keys(pattern: redisKey).ToArray();
logger.LogDebug($"Found {keys.Length} keys");
List <VolumeModel> volumes = new List <VolumeModel>();
foreach (RedisKey key in keys)
{
logger.LogDebug($"Reading the key {key}");
VolumeModel volumeModel = new VolumeModel();
foreach (PropertyInfo property in volumeModel.GetType().GetProperties())
{
var value = await db.HashGetAsync(key, property.Name);
property.SetValue(volumeModel, Convert.ChangeType(value, property.PropertyType));
}
volumes.Add(volumeModel);
}
logger.LogDebug($"All volumes ejected successfully");
return(volumes.ConvertAll(v => VolumeAdapter.Volume(v)));
}