/// <summary>
/// Writes the specified stream to this multi-stream store.
/// </summary>
/// <param name="source">The source stream to write.</param>
/// <param name="metadata">The stream metadata of the stream.</param>
/// <param name="deliveryPolicy">An optional delivery policy.</param>
internal void Write(Emitter <Message <JToken> > source, JsonStreamMetadata metadata, DeliveryPolicy deliveryPolicy = null)
{
var mergeInput = this.merger.Add(metadata.Name); // this checks for duplicates
this.writer.OpenStream(metadata);
Operators.PipeTo(source, mergeInput, deliveryPolicy);
}
/// <summary>
/// Opens the stream for the specified stream.
/// </summary>
/// <param name="metadata">The metadata of the stream.</param>
/// <returns>The stream metadata.</returns>
public JsonStreamMetadata OpenStream(JsonStreamMetadata metadata)
{
if (metadata == null)
{
throw new ArgumentNullException(nameof(metadata));
}
return(this.OpenStream(metadata.Id, metadata.Name, metadata.TypeName));
}
/// <summary>
/// Opens the stream for the specified stream
/// </summary>
/// <param name="metadata">The metadata of the stream.</param>
/// <returns>true if the stream was opened; otherwise false.</returns>
public bool OpenStream(JsonStreamMetadata metadata)
{
if (metadata == null)
{
throw new ArgumentNullException(nameof(metadata));
}
if (this.enabledStreams.Contains(metadata.Id))
{
return(false);
}
this.enabledStreams.Add(metadata.Id);
return(true);
}
/// <summary>
/// Opens the stream for the specified stream.
/// </summary>
/// <param name="streamId">The stream id.</param>
/// <param name="streamName">The stream name.</param>
/// <param name="typeName">The stream type name.</param>
/// <returns>The stream metadata.</returns>
public JsonStreamMetadata OpenStream(int streamId, string streamName, string typeName)
{
if (this.catalog.ContainsKey(streamId))
{
throw new InvalidOperationException($"The stream id {streamId} has already been registered with this writer.");
}
var metadata = new JsonStreamMetadata()
{
Id = streamId, Name = streamName, PartitionName = this.Name, PartitionPath = this.Path, TypeName = typeName
};
this.catalog[metadata.Id] = metadata;
this.WriteCatalog(); // ensure catalog is up to date even if crashing later
return(metadata);
}
