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API streamlining #16

Description

@m1l4n54v1c

This issue covers various findings on the current API design. An implementor(s) may group these findings into subtasks.

If possible rename bidi stream messages to: Platform(Inbound/Outbound)(Command/Query/Control)Instruction. Use instruction_id i.o. message_id.

common.proto

  • ErrorMessage -> rename location to source
  • FlowControl -> deprecate client_id
  • ErrorMessage -> introduce error_code as string

control.proto

  • ClientIdentification -> rename client_id to component_instance_id, rename component_name to component_id
  • SegmentStatus -> rename one_part_of to fraction

query.proto

  • QueryProviderInbound -> rename QueryRequest query parameter to query_request
  • QueryRequest -> rename message_identifier to message_id, rename client_id to component_instance_id, rename component_name to component_id
  • QueryComplete -> remove message_id
  • QueryResponse -> rename message_identifier to message_id, deprecate error_code (since it'll be part of ErrorMessage), check whether processing_instruction is needed
  • SubscriptionQuery -> rename subscription_identifier to message_id, introduce SerializedType message as a copy of SerializedObject where 3 is reserved
  • QueryUpdate -> rename message_identifier to message_id, rename client_id to component_instance_id and component_name to component_id
  • QueryUpdateComplete -> rename client_id to component_instance_id and component_name to component_id, rename it to QueryUpdateCompleted
  • QueryUpdateCompleteExceptionally -> rename client_id to component_instance_id and component_name to component_id, rename to QueryUpdateCompletedExceptionally, deprecate error_code
  • SubscriptionQueryRequest -> reconsider current design - some field types could be adjusted
  • SubscriptionQueryResponse -> remove message_identifier
  • QuerySubscription -> rename query to query_name, rename result_name to result_type, rename client_id to component_instance_id and component_name to component_id

command.proto

  • Command -> rename message_identifier to message_id, rename client_id to component_instance_id and component_name to component_id
  • CommandResponse -> rename message_identifier to message_id, remove error_code, rename request_identifier to request_id
  • CommandSubscription -> rename client_id to component_instance_id and component_name to component_id, remove message_id, rename command to command_name

event.proto

  • Confirmation -> introduce Append(Event/Snapshot)Result
  • TrackingToken -> rename token to position
  • EventWithToken -> rename token to position
  • QueryEventsResponse -> rename files_completed to historic_events_processed, introduce Void to common.proto and use it as type here
  • RowResponse -> rename id_values to id_value and sort_values to sort_value
  • ReadHighestSequenceNrResponse -> rename to_sequence_number to sequence_number
  • GetEventsRequest -> rename tracking_token to position, rename client_id to component_instance_id and component_name to component_id, remove processor, change the type of PayloadDescription with newly introduced SerializedType and remove PayloadDescription
  • Event -> rename message_identifier to message_id
  • QueryValue -> rename to TypedValue and move to common.proto

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