272 lines
14 KiB
C#
272 lines
14 KiB
C#
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using DTS.Common.Classes.Locking;
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using DTS.Common.Utilities.Logging;
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using System;
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using System.Data;
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using System.Data.SqlClient;
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namespace DTS.Common.Storage
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{
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public class LockManager
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{
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public static bool FreeLock(int itemId, string userName, int? userId, out LockError error, int categoryId)
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{
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error = null;
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try
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{
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using (var cmd = DbOperations.GetSQLCommand(true))
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{
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try
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{
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cmd.CommandType = CommandType.StoredProcedure;
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cmd.CommandText = DbOperationsEnum.StoredProcedure.sp_LockFree.ToString();
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#region params
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cmd.Parameters.Add(new SqlParameter("@UserId", SqlDbType.Int) { Value = userId });
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cmd.Parameters.Add(new SqlParameter("@UserName", SqlDbType.NVarChar, 50) { Value = userName });
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cmd.Parameters.Add(new SqlParameter("@ItemId", SqlDbType.Int) { Value = itemId });
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cmd.Parameters.Add(new SqlParameter("@CategoryId", SqlDbType.Int) { Value = categoryId });
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var errorNumber = new SqlParameter("@errorNumber", SqlDbType.Int) { Direction = ParameterDirection.Output };
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cmd.Parameters.Add(errorNumber);
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var errorMessage = new SqlParameter("@errorMessage", SqlDbType.NVarChar, 250) { Direction = ParameterDirection.Output };
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cmd.Parameters.Add(errorMessage);
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#endregion params
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cmd.ExecuteNonQuery();
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var errorCode = int.Parse(errorNumber.Value.ToString());
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switch (errorCode)
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{
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case 0: return true; //all cool, lock updated
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case 1: //test setup not found
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case 2: //user not found
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error = new LockError(errorCode,
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(errorMessage.Value as string) ?? $"{errorCode}");
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return false;
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case 3: //no lock to update
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error = new LockError(3, (errorMessage.Value as string) ?? $"{errorCode}");
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return false;
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default:
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error = new LockError(4, (errorMessage.Value as string) ?? $"{errorCode}");
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return false;
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}
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}
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finally { cmd.Connection.Dispose(); }
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}
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}
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catch (Exception ex)
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{
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APILogger.Log(ex);
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return false;
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}
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}
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public static bool UpdateLock(int itemId, int categoryId, string userName, int? userId, out LockError error)
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{
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error = null;
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try
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{
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using (var cmd = DbOperations.GetSQLCommand(true))
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{
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try
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{
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cmd.CommandType = CommandType.StoredProcedure;
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cmd.CommandText = DbOperationsEnum.StoredProcedure.sp_LockUpdate.ToString();
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#region params
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cmd.Parameters.Add(new SqlParameter("@UserId", SqlDbType.Int) { Value = userId });
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cmd.Parameters.Add(new SqlParameter("@UserName", SqlDbType.NVarChar, 50) { Value = userName });
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cmd.Parameters.Add(new SqlParameter("@ItemId", SqlDbType.Int) { Value = itemId });
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cmd.Parameters.Add(new SqlParameter("@CategoryId", SqlDbType.Int) { Value = categoryId });
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cmd.Parameters.Add(new SqlParameter("@MachineName", SqlDbType.NVarChar, 50) { Value = Environment.MachineName });
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var errorNumber = new SqlParameter("@errorNumber", SqlDbType.Int) { Direction = ParameterDirection.Output };
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cmd.Parameters.Add(errorNumber);
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var errorMessage = new SqlParameter("@errorMessage", SqlDbType.NVarChar, 250) { Direction = ParameterDirection.Output };
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cmd.Parameters.Add(errorMessage);
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var lockingUser = new SqlParameter("@LockingUser", SqlDbType.NVarChar, 50) { Direction = ParameterDirection.Output };
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cmd.Parameters.Add(lockingUser);
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var lockingMachine = new SqlParameter("@LockingMachine", SqlDbType.NVarChar, 50) { Direction = ParameterDirection.Output };
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cmd.Parameters.Add(lockingMachine);
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var lastTimeUsed = new SqlParameter("@LastUsedTime", SqlDbType.DateTime) { Direction = ParameterDirection.Output };
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cmd.Parameters.Add(lastTimeUsed);
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var lockCreateTime = new SqlParameter("@LockCreateTime", SqlDbType.DateTime) { Direction = ParameterDirection.Output };
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cmd.Parameters.Add(lockCreateTime);
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#endregion params
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cmd.ExecuteNonQuery();
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var errorCode = int.Parse(errorNumber.Value.ToString());
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switch (errorCode)
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{
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case 0: return true; //all cool, lock updated
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case 1: //test setup not found
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case 2: //user not found
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error = new LockError(errorCode,
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(errorMessage.Value as string) ?? $"{errorCode}");
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return false;
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case 3: //no lock to update
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error = new LockError(LockError.LOCKDOESNTEXIST_ERROR, (errorMessage.Value as string) ?? $"{errorCode}");
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return false;
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case 4: //lock stolen
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error = new LockError(LockError.LOCKSTOLEN_ERROR,
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$"Lock now belongs to user {lockingUser.Value}:{lockingMachine.Value}", (string)lockingUser.Value, (string)lockingMachine.Value);
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return false;
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default:
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error = new LockError(4, (errorMessage.Value as string) ?? $"{errorCode}");
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return false;
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}
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}
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finally { cmd.Connection.Dispose(); }
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}
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}
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catch (SqlException ex)
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{
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switch (ex.Number)
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{
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case ERROR_BAD_NETPATH:
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error = new LockError(LockError.BAD_NETPATH_ERROR, Strings.Strings.BAD_NETPATH_ERROR_MSG);
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break;
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case ERROR_SEM_TIMEOUT:
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error = new LockError(LockError.SEM_TIMEOUT_ERROR, Strings.Strings.SEM_TIME_ERROR_MSG);
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break;
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}
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APILogger.Log("SqlException in UpdateLock", ex);
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return false;
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}
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catch (Exception ex)
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{
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APILogger.Log("Exception in UpdateLock", ex);
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return false;
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}
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}
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/// <summary>
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/// The semaphore timeout period has expired
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/// https://docs.microsoft.com/en-us/windows/win32/debug/system-error-codes--0-499-?redirectedfrom=MSDN
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/// </summary>
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private const int ERROR_SEM_TIMEOUT = 0x00000079;
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/// <summary>
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/// network path not found, apparently also can occur during lock management?
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/// 14782 Improve lost remote db connection modal dialogs
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/// </summary>
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private const int ERROR_BAD_NETPATH = 0x00000035;
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public enum ItemCategories
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{
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TestSetup,
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Group,
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Sensor,
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SystemSettings
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}
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public static bool LockItem(string itemKey,
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int itemId,
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ItemCategories itemCategory,
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string userName,
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int? userId,
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out LockRecord existingLock, out
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LockError error)
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{
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error = null;
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existingLock = null;
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try
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{
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using (var cmd = DbOperations.GetSQLCommand(true))
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{
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try
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{
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cmd.CommandType = CommandType.StoredProcedure;
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cmd.CommandText = DbOperationsEnum.StoredProcedure.sp_LockGet.ToString();
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#region params
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int? id = null;
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if (itemId > 0) { id = itemId; } //NOTE YOU"LL NEED THE ID TO FREE, AND THE CURRENT SP DOESN'T RETURN IT
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cmd.Parameters.Add(new SqlParameter("@UserId", SqlDbType.Int) { Value = userId });
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cmd.Parameters.Add(new SqlParameter("@UserName", SqlDbType.NVarChar, 50) { Value = userName });
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cmd.Parameters.Add(new SqlParameter("@ItemId", SqlDbType.Int) { Value = id });
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cmd.Parameters.Add(new SqlParameter("@ItemKey", SqlDbType.NVarChar, 50) { Value = itemKey });
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cmd.Parameters.Add(new SqlParameter("@ItemCategory", SqlDbType.NVarChar, 50) { Value = itemCategory.ToString() });
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cmd.Parameters.Add(new SqlParameter("@MachineName", SqlDbType.NVarChar, 50) { Value = Environment.MachineName });
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var errorNumber = new SqlParameter("@errorNumber", SqlDbType.Int) { Direction = ParameterDirection.Output };
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cmd.Parameters.Add(errorNumber);
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var errorMessage = new SqlParameter("@errorMessage", SqlDbType.NVarChar, 250) { Direction = ParameterDirection.Output };
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cmd.Parameters.Add(errorMessage);
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var lockingUser = new SqlParameter("@LockingUser", SqlDbType.NVarChar, 50) { Direction = ParameterDirection.Output };
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cmd.Parameters.Add(lockingUser);
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var lockingMachine = new SqlParameter("@LockingMachineName", SqlDbType.NVarChar, 50) { Direction = ParameterDirection.Output };
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cmd.Parameters.Add(lockingMachine);
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var lastTimeUsed = new SqlParameter("@LastUsedTime", SqlDbType.DateTime) { Direction = ParameterDirection.Output };
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cmd.Parameters.Add(lastTimeUsed);
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var lockCreateTime = new SqlParameter("@LockCreateTime", SqlDbType.DateTime) { Direction = ParameterDirection.Output };
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cmd.Parameters.Add(lockCreateTime);
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var lockItemCategory = new SqlParameter("@LockedItemCategory", SqlDbType.Int) { Direction = ParameterDirection.Output };
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cmd.Parameters.Add(lockItemCategory);
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var lockedItemId = new SqlParameter("@LockedItemId", SqlDbType.Int) { Direction = ParameterDirection.Output };
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cmd.Parameters.Add(lockedItemId);
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#endregion params
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cmd.ExecuteNonQuery();
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int resultItemId = itemId;
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if (itemId < 0)
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{
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if (!DBNull.Value.Equals(lockedItemId.Value))
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{
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resultItemId = Convert.ToInt32(lockedItemId.Value);
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}
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}
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var errorCode = int.Parse(errorNumber.Value.ToString());
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switch (errorCode)
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{
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case 0:
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existingLock = new LockRecord(userName, Environment.MachineName, DateTime.Now, DateTime.Now, itemKey, Convert.ToInt32(lockItemCategory.Value), resultItemId);
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return true; //all cool, locked away
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case 1: //item not found
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error = new LockError(LockError.ITEM_NOT_FOUND, (errorMessage.Value as string) ?? $"{errorCode}");
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return false;
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case 2: //user not found
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error = new LockError(errorCode,
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(errorMessage.Value as string) ?? $"{errorCode}");
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return false;
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case 3: //already locked
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existingLock = new LockRecord((string)lockingUser.Value,
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(string)lockingMachine.Value, Convert.ToDateTime(lockCreateTime.Value),
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Convert.ToDateTime(lastTimeUsed.Value), itemKey, Convert.ToInt32(lockItemCategory.Value), resultItemId);
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error = new LockError(errorCode, (errorMessage.Value as string) ?? $"{errorCode}");
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return false;
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default:
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error = new LockError(LockError.UNKNOWN_ERROR, (errorMessage.Value as string) ?? $"{errorCode}");
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return false;
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}
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}
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finally { cmd.Connection.Dispose(); }
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}
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}
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catch (Exception ex)
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{
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APILogger.Log(ex);
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error = new LockError(LockError.UNKNOWN_ERROR, ex.Message);
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return false;
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}
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}
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}
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}
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