On 12/16/21 11:51, Jiří Činčura wrote:
What should be in p_batch_create.p_batch_pb? Is this some new format or
something like DPB?
Exactly like DPB v.2 (i.e. 32-bit clumplet lengths).
And what should - logically - be inside? Or maybe more broadly, is there some high level
description of the batching? I'm failing to find something, except batch interface
description in Using_OO_API.html, but that's about API, not about the
"protocol".
Sooner of all there is no other description except interface description
in Using_OO_API. What about particular parameters block - here protocol
is very simple, it's as always sent 'as is' (remember, we store data in
all parameters block in network form). Sending data over the wire does
not differ from other places - it's a stream of messages, no difference
with other places where messages are sent. A more complicated thing is
blob transfer because blobs are also always sent in a stream but we must
take into an account that actual data may be segmented and swap bytes in
segment length when needed. Afraid there is - as always :( - no protocol
description except source code. Key ops are op_batch_msg,
op_batch_blob_stream & also op_batch_cs (retuning batch execution state
to client).
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