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StorageHelper.cs
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StorageHelper.cs
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//-----------------------------------------------------------------------
// <copyright file="StorageHelper.cs" company="Hibernating Rhinos LTD">
// Copyright (c) Hibernating Rhinos LTD. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
using System;
using Raven.Abstractions;
using Raven.Abstractions.Data;
using Raven.Abstractions.Exceptions;
using Raven.Database.Storage;
using Raven.Http;
using Raven.Http.Exceptions;
using Raven.Json.Linq;
using Raven.Munin;
using Raven.Storage.Managed.Impl;
namespace Raven.Storage.Managed
{
public static class StorageHelper
{
public static void AssertNotModifiedByAnotherTransaction(TableStorage storage, ITransactionStorageActions transactionStorageActions, string key, Table.ReadResult readResult, TransactionInformation transactionInformation)
{
if (readResult == null)
return;
var txIdAsBytes = readResult.Key.Value<byte[]>("txId");
if (txIdAsBytes == null)
return;
var txId = new Guid(txIdAsBytes);
if (transactionInformation != null && transactionInformation.Id == txId)
{
return;
}
var existingTx = storage.Transactions.Read(new RavenJObject { { "txId", txId.ToByteArray() } });
if (existingTx == null)//probably a bug, ignoring this as not a real tx
return;
var timeout = existingTx.Key.Value<DateTime>("timeout");
if (SystemTime.UtcNow > timeout)
{
transactionStorageActions.RollbackTransaction(txId);
return;
}
throw new ConcurrencyException("Document '" + key + "' is locked by transacton: " + txId);
}
}
}