package tezos-protocol-alpha

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tezos-protocol-alpha.embedded-protocol
- Tezos_embedded_protocol_alpha
  - Registerer
    
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tezos-protocol-alpha.parameters
- Tezos_protocol_alpha_parameters
  - Default_parameters
    
    Internal_for_tests
tezos-protocol-alpha.protocol
- Tezos_protocol_alpha
  - Protocol
tezos-protocol-alpha.protocol.environment
- Tezos_protocol_environment_alpha
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    SIGNATURE_PUBLIC_KEY
    
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  - proto_rpc_context
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tezos-protocol-alpha.protocol.lifted
- Tezos_protocol_alpha_lifted
  - Lifted_protocol
    
    Mempool
tezos-protocol-alpha.protocol.raw
- Tezos_raw_protocol_alpha

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Storage management of slots for the data-availability layer.

Overview

This module is an interface for the slot storage for the layer 1.

Depending on the current level of the context and the attestation_lag (a constant given by the context), the status of the slot may differ:

For every level in the interval current_level; current_level + attestation_lag - 1 the slot is Pending. This means a slot header was proposed but was not declared available yet.

For every level above current_level + attestation_lag, the slot may be attested. For any slot attested by the protocol (i.e. indices returned by finalize_pending_slots), subscribers of the DAL should take into account the corresponding slots.

For every level below current_level - attestation_lag, there should not be any slot in the storage.

val find_slot_headers : 
  Raw_context.t ->
  Raw_level_repr.t ->
  Dal_slot_repr.Header.t list option
    Tezos_protocol_environment_alpha.Error_monad.tzresult
    Tezos_protocol_environment_alpha.Lwt.t

find_slot_headers ctxt level returns Some slot_headers where slot_headers are pending slots at level level. None is returned if no slot_header was registered at this level. The function fails if the reading into the context fails.

val finalize_current_slot_headers : 
  Raw_context.t ->
  Raw_context.t Tezos_protocol_environment_alpha.Lwt.t

finalize_current_slot_headers ctxt finalizes the current slot headers posted on this block and marks them as pending into the context.

val finalize_pending_slot_headers : 
  Raw_context.t ->
  number_of_slots:int ->
  (Raw_context.t * Dal_attestation_repr.t)
    Tezos_protocol_environment_alpha.Error_monad.tzresult
    Tezos_protocol_environment_alpha.Lwt.t

finalize_pending_slot_headers ctxt ~number_of_slots finalizes pending slot headers which are old enough (i.e. registered at level current_level - attestation_lag). All slots marked as available are returned. All the pending slots at current_level - attestation_lag level are removed from the context.

val get_slot_headers_history : 
  Raw_context.t ->
  Dal_slot_repr.History.t Tezos_protocol_environment_alpha.Error_monad.tzresult
    Tezos_protocol_environment_alpha.Lwt.t

get_slot_headers_history ctxt returns the current value of slots_history stored in ctxt, or Slots_history.genesis if no value is stored yet.

val compute_attested_slot_headers : 
  is_slot_attested:(Dal_slot_repr.Header.t -> bool) ->
  Dal_slot_repr.Header.t list ->
  Dal_slot_repr.Header.t list * Dal_attestation_repr.t

compute_attested_slot_headers ~is_slot_attested published_slot_headers filter the given published_slot_headers and return the list of attested slot headers and the corresponding bitset.