# JsonDurableTaskCompletionSourceCommandCodec<T> Methods

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.journaling/orleans.journaling.json.jsondurabletaskcompletionsourcecommandcodec-1/)

## Apply(JournalBufferReader, IDurableTaskCompletionSourceCommandHandler<T>) {#apply-orleans-journaling-journalbufferreader-orleans-journaling-idurabletaskcomp-aee6cee2}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.journaling/orleans.journaling.json.jsondurabletaskcompletionsourcecommandcodec-1/methods/apply-orleans-journaling-journalbufferreader-orleans-journaling-idurabletaskcomp-aee6cee2/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Journaling/Formats/Json/JsonDurableValueCommandCodecs.cs#L179-L188)

```csharp
public void Apply(JournalBufferReader input, IDurableTaskCompletionSourceCommandHandler<T> consumer)
```

Reads one encoded command and applies it to `consumer`.

### Parameters

- `input` (`JournalBufferReader`)
- `consumer` (`IDurableTaskCompletionSourceCommandHandler<T>`)

## WriteCanceled(JournalStreamWriter) {#writecanceled-orleans-journaling-journalstreamwriter-7a072a36}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.journaling/orleans.journaling.json.jsondurabletaskcompletionsourcecommandcodec-1/methods/writecanceled-orleans-journaling-journalstreamwriter-7a072a36/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Journaling/Formats/Json/JsonDurableValueCommandCodecs.cs#L170-L174)

```csharp
public void WriteCanceled(JournalStreamWriter writer)
```

Writes a canceled command.

### Parameters

- `writer` (`JournalStreamWriter`)

## WriteCompleted(T, JournalStreamWriter) {#writecompleted-t-orleans-journaling-journalstreamwriter-3f5648e1}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.journaling/orleans.journaling.json.jsondurabletaskcompletionsourcecommandcodec-1/methods/writecompleted-t-orleans-journaling-journalstreamwriter-3f5648e1/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Journaling/Formats/Json/JsonDurableValueCommandCodecs.cs#L144-L152)

```csharp
public void WriteCompleted(T value, JournalStreamWriter writer)
```

Writes a completed command.

### Parameters

- `value` (`T`)
- `writer` (`JournalStreamWriter`)

## WriteFaulted(Exception, JournalStreamWriter) {#writefaulted-system-exception-orleans-journaling-journalstreamwriter-7f5d2f86}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.journaling/orleans.journaling.json.jsondurabletaskcompletionsourcecommandcodec-1/methods/writefaulted-system-exception-orleans-journaling-journalstreamwriter-7f5d2f86/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Journaling/Formats/Json/JsonDurableValueCommandCodecs.cs#L157-L165)

```csharp
public void WriteFaulted(Exception exception, JournalStreamWriter writer)
```

Writes a faulted command.

### Parameters

- `exception` (`Exception`)
- `writer` (`JournalStreamWriter`)

## WritePending(JournalStreamWriter) {#writepending-orleans-journaling-journalstreamwriter-7a6654cc}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.journaling/orleans.journaling.json.jsondurabletaskcompletionsourcecommandcodec-1/methods/writepending-orleans-journaling-journalstreamwriter-7a6654cc/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Journaling/Formats/Json/JsonDurableValueCommandCodecs.cs#L135-L139)

```csharp
public void WritePending(JournalStreamWriter writer)
```

Writes a pending command.

### Parameters

- `writer` (`JournalStreamWriter`)