progress

Type Members

1. class ProgressHeadersAsEventsStage extends GraphStage[BidiShape[ByteString, ByteString, ByteString, ByteString]]

   

2. class StreamingProgressClickhouseTransport extends ClientTransport

   

   Clickhouse sends http progress headers with the name X-ClickHouse-Progress which cannot be handled in a streaming way in akka In the request we include our own custom header X-Internal-Identifier so we can send the internal query id with the progress The progress headers are being intercepted by the transport and sent to an internal source as progress events with the internal query id which will be used to route them to the query progress source We just proxy the request/response and do not manipulate them in any way