/// <summary>
/// Performs undo of the storage operation that is pending.
/// </summary>
/// <param name="logEntry">Log entry for the pending operation.</param>
protected override void UndoPendingStoreOperations(IStoreLogEntry logEntry)
{
using (IStoreOperation op = _shardMapManager.StoreOperationFactory.FromLogEntry(_shardMapManager, logEntry))
{
op.Undo();
}
}
/// <summary>
/// Sets the stub of StoreOperationGlobal.UndoPendingStoreOperationsAsync(IStoreLogEntry logEntry)
/// </summary>
protected override Task UndoPendingStoreOperationsAsync(IStoreLogEntry logEntry)
{
Func <IStoreLogEntry, Task> func1 = this.UndoPendingStoreOperationsAsyncIStoreLogEntry;
if (func1 != null)
{
return(func1(logEntry));
}
if (this.___callBase)
{
return(base.UndoPendingStoreOperationsAsync(logEntry));
}
return(this.InstanceBehavior.Result <StubFindMappingByKeyGlobalOperation, Task>(this, "UndoPendingStoreOperationsAsync"));
}
/// <summary>
/// Sets the stub of StoreOperationGlobal.UndoPendingStoreOperations(IStoreLogEntry logEntry)
/// </summary>
protected override void UndoPendingStoreOperations(IStoreLogEntry logEntry)
{
Action <IStoreLogEntry> action1 = this.UndoPendingStoreOperationsIStoreLogEntry;
if (action1 != null)
{
action1(logEntry);
}
else if (this.___callBase)
{
base.UndoPendingStoreOperations(logEntry);
}
else
{
this.InstanceBehavior.VoidResult <StubFindMappingByKeyGlobalOperation>(this, "UndoPendingStoreOperations");
}
}
/// <summary>
/// Performs undo of the storage operation that is pending.
/// </summary>
/// <param name="logEntry">Log entry for the pending operation.</param>
protected override void UndoPendingStoreOperations(IStoreLogEntry logEntry)
{
using (IStoreOperation op = _shardMapManager.StoreOperationFactory.FromLogEntry(_shardMapManager, logEntry))
{
op.Undo();
}
}
/// <summary>
/// Create operation corresponding to the <see cref="IStoreLogEntry"/> information.
/// </summary>
/// <param name="shardMapManager">ShardMapManager instance for undo operation.</param>
/// <param name="so">Store operation information.</param>
/// <returns>The operation to be undone.</returns>
public virtual IStoreOperation FromLogEntry(ShardMapManager shardMapManager, IStoreLogEntry so)
{
XElement root;
using (XmlReader reader = so.Data.CreateReader())
{
root = XElement.Load(reader);
}
switch (so.OpCode)
{
case StoreOperationCode.AddShard:
return(this.CreateAddShardOperation(
shardMapManager,
so.Id,
so.UndoStartState,
root));
case StoreOperationCode.RemoveShard:
return(this.CreateRemoveShardOperation(
shardMapManager,
so.Id,
so.UndoStartState,
root));
case StoreOperationCode.UpdateShard:
return(this.CreateUpdateShardOperation(
shardMapManager,
so.Id,
so.UndoStartState,
root));
case StoreOperationCode.AddPointMapping:
case StoreOperationCode.AddRangeMapping:
return(this.CreateAddMappingOperation(
so.OpCode,
shardMapManager,
so.Id,
so.UndoStartState,
root,
so.OriginalShardVersionAdds));
case StoreOperationCode.RemovePointMapping:
case StoreOperationCode.RemoveRangeMapping:
return(this.CreateRemoveMappingOperation(
so.OpCode,
shardMapManager,
so.Id,
so.UndoStartState,
root,
so.OriginalShardVersionRemoves));
case StoreOperationCode.UpdatePointMapping:
case StoreOperationCode.UpdateRangeMapping:
case StoreOperationCode.UpdatePointMappingWithOffline:
case StoreOperationCode.UpdateRangeMappingWithOffline:
return(this.CreateUpdateMappingOperation(
so.OpCode,
shardMapManager,
so.Id,
so.UndoStartState,
root,
so.OriginalShardVersionRemoves,
so.OriginalShardVersionAdds));
case StoreOperationCode.SplitMapping:
case StoreOperationCode.MergeMappings:
return(this.CreateReplaceMappingsOperation(
so.OpCode,
shardMapManager,
so.Id,
so.UndoStartState,
root,
so.OriginalShardVersionAdds));
default:
Debug.Fail("Unexpected operation code.");
return(null);
}
}
/// <summary>
/// Create operation corresponding to the <see cref="IStoreLogEntry"/> information.
/// </summary>
/// <param name="shardMapManager">ShardMapManager instance for undo operation.</param>
/// <param name="so">Store operation information.</param>
/// <returns>The operation to be undone.</returns>
public virtual IStoreOperation FromLogEntry(ShardMapManager shardMapManager, IStoreLogEntry so)
{
XElement root;
using (XmlReader reader = so.Data.CreateReader())
{
root = XElement.Load(reader);
}
switch (so.OpCode)
{
case StoreOperationCode.AddShard:
return this.CreateAddShardOperation(
shardMapManager,
so.Id,
so.UndoStartState,
root);
case StoreOperationCode.RemoveShard:
return this.CreateRemoveShardOperation(
shardMapManager,
so.Id,
so.UndoStartState,
root);
case StoreOperationCode.UpdateShard:
return this.CreateUpdateShardOperation(
shardMapManager,
so.Id,
so.UndoStartState,
root);
case StoreOperationCode.AddPointMapping:
case StoreOperationCode.AddRangeMapping:
return this.CreateAddMappingOperation(
so.OpCode,
shardMapManager,
so.Id,
so.UndoStartState,
root,
so.OriginalShardVersionAdds);
case StoreOperationCode.RemovePointMapping:
case StoreOperationCode.RemoveRangeMapping:
return this.CreateRemoveMappingOperation(
so.OpCode,
shardMapManager,
so.Id,
so.UndoStartState,
root,
so.OriginalShardVersionRemoves);
case StoreOperationCode.UpdatePointMapping:
case StoreOperationCode.UpdateRangeMapping:
case StoreOperationCode.UpdatePointMappingWithOffline:
case StoreOperationCode.UpdateRangeMappingWithOffline:
return this.CreateUpdateMappingOperation(
so.OpCode,
shardMapManager,
so.Id,
so.UndoStartState,
root,
so.OriginalShardVersionRemoves,
so.OriginalShardVersionAdds);
case StoreOperationCode.SplitMapping:
case StoreOperationCode.MergeMappings:
return this.CreateReplaceMappingsOperation(
so.OpCode,
shardMapManager,
so.Id,
so.UndoStartState,
root,
so.OriginalShardVersionAdds);
default:
Debug.Fail("Unexpected operation code.");
return null;
}
}
/// <summary>
/// Performs undo of the storage operation that is pending.
/// </summary>
/// <param name="logEntry">Log entry for the pending operation.</param>
protected virtual void UndoPendingStoreOperations(IStoreLogEntry logEntry)
{
// Will only be implemented by LockOrUnLockMapping operation
// which will actually perform the undo operation.
throw new NotImplementedException();
}
/// <summary>
/// Asynchronously performs undo of the storage operation that is pending.
/// </summary>
/// <param name="logEntry">Log entry for the pending operation.</param>
/// <returns>Task to await Undo of the operation</returns>
/// <remarks>Currently not used anywhere since the Async APIs were added
/// in support of the look-up operations</remarks>
protected virtual Task UndoPendingStoreOperationsAsync(IStoreLogEntry logEntry)
{
// Currently async APIs are only used by FindMappingByKeyGlobalOperation
// which doesn't require Undo
throw new NotImplementedException();
}
/// <summary>
/// Sets the stub of StoreOperationFactory.FromLogEntry(ShardMapManager shardMapManager, IStoreLogEntry so)
/// </summary>
public override IStoreOperation FromLogEntry(ShardMapManager shardMapManager, IStoreLogEntry so)
{
Func<ShardMapManager, IStoreLogEntry, IStoreOperation> func1 = this.FromLogEntryShardMapManagerIStoreLogEntry;
if (func1 != null)
return func1(shardMapManager, so);
if (this.___callBase)
return base.FromLogEntry(shardMapManager, so);
return this.InstanceBehavior.Result<StubStoreOperationFactory, IStoreOperation>(this, "FromLogEntry");
}
/// <summary>
/// Sets the stub of StoreOperationGlobal.UndoPendingStoreOperationsAsync(IStoreLogEntry logEntry)
/// </summary>
protected override Task UndoPendingStoreOperationsAsync(IStoreLogEntry logEntry)
{
Func<IStoreLogEntry, Task> func1 = this.UndoPendingStoreOperationsAsyncIStoreLogEntry;
if (func1 != null)
return func1(logEntry);
if (this.___callBase)
return base.UndoPendingStoreOperationsAsync(logEntry);
return this.InstanceBehavior.Result<StubFindMappingByKeyGlobalOperation, Task>(this, "UndoPendingStoreOperationsAsync");
}
/// <summary>
/// Sets the stub of StoreOperationGlobal.UndoPendingStoreOperations(IStoreLogEntry logEntry)
/// </summary>
protected override void UndoPendingStoreOperations(IStoreLogEntry logEntry)
{
Action<IStoreLogEntry> action1 = this.UndoPendingStoreOperationsIStoreLogEntry;
if (action1 != null)
action1(logEntry);
else if (this.___callBase)
base.UndoPendingStoreOperations(logEntry);
else
this.InstanceBehavior.VoidResult<StubFindMappingByKeyGlobalOperation>(this, "UndoPendingStoreOperations");
}
/// <summary>
/// Asynchronously performs undo of the storage operation that is pending.
/// </summary>
/// <param name="logEntry">Log entry for the pending operation.</param>
/// <returns>Task to await Undo of the operation</returns>
/// <remarks>Currently not used anywhere since the Async APIs were added
/// in support of the look-up operations</remarks>
protected virtual Task UndoPendingStoreOperationsAsync(IStoreLogEntry logEntry)
{
// Currently async APIs are only used by FindMappingByKeyGlobalOperation
// which doesn't require Undo
throw new NotImplementedException();
}
/// <summary>
/// Performs undo of the storage operation that is pending.
/// </summary>
/// <param name="logEntry">Log entry for the pending operation.</param>
protected virtual void UndoPendingStoreOperations(IStoreLogEntry logEntry)
{
// Will only be implemented by LockOrUnLockMapping operation
// which will actually perform the undo operation.
throw new NotImplementedException();
}
