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Write beacon slot to summary chain #358

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Jun 5, 2022
Merged

Write beacon slot to summary chain #358

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7 changes: 5 additions & 2 deletions lib/archethic/beacon_chain.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -116,8 +116,11 @@ defmodule Archethic.BeaconChain do
data: %TransactionData{content: content}
}
) do
with {%Slot{subset: subset} = slot, _} <- Slot.deserialize(content),
:ok <- validate_slot(tx, slot) do
with {%Slot{subset: subset, slot_time: slot_time} = slot, _} <- Slot.deserialize(content),
:ok <- validate_slot(tx, slot),
genesis_address <-
Crypto.derive_beacon_chain_address(subset, previous_summary_time(slot_time)),
:ok <- TransactionChain.write_transaction_at(tx, genesis_address) do
Logger.debug("New beacon transaction loaded - #{inspect(slot)}",
beacon_subset: Base.encode16(subset)
)
Expand Down
52 changes: 36 additions & 16 deletions lib/archethic/beacon_chain/subset.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -185,10 +185,17 @@ defmodule Archethic.BeaconChain.Subset do

# Avoid to store or dispatch an empty beacon's slot
unless Slot.empty?(current_slot) do
beacon_transaction = create_beacon_transaction(current_slot)

if summary_time?(time) do
genesis_address =
Crypto.derive_beacon_chain_address(subset, SummaryTimer.previous_summary(time))

TransactionChain.write_transaction_at(beacon_transaction, genesis_address)
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Ok, This is where we are caching as well as writing to the DB

SummaryCache.add_slot(subset, current_slot)
else
dispatch_slot_to_summary_nodes(current_slot, time, node_public_key)
next_time = SlotTimer.next_slot(time)
broadcast_beacon_transaction(subset, next_time, beacon_transaction, node_public_key)
end
end
end
Expand All @@ -199,13 +206,6 @@ defmodule Archethic.BeaconChain.Subset do

defp update_p2p_view?(_), do: true

defp dispatch_slot_to_summary_nodes(current_slot = %Slot{subset: subset}, time, node_public_key) do
beacon_transaction = create_beacon_transaction(current_slot)

next_time = SlotTimer.next_slot(time)
broadcast_beacon_transaction(subset, next_time, beacon_transaction, node_public_key)
end

defp next_state(state = %{subset: subset}, time) do
next_time = SlotTimer.next_slot(time)

Expand Down Expand Up @@ -239,9 +239,12 @@ defmodule Archethic.BeaconChain.Subset do
beacon_subset: Base.encode16(subset)
)

genesis_address =
Crypto.derive_beacon_chain_address(subset, SummaryTimer.previous_summary(time))

beacon_slots
|> create_summary_transaction(subset, time)
|> TransactionChain.write_transaction()
|> TransactionChain.write_transaction_at(genesis_address)
end
end

Expand Down Expand Up @@ -283,13 +286,30 @@ defmodule Archethic.BeaconChain.Subset do
{prev_pub, prev_pv} = Crypto.derive_beacon_keypair(subset, SlotTimer.previous_slot(slot_time))
{next_pub, _} = Crypto.derive_beacon_keypair(subset, slot_time)

Transaction.new_with_keys(
:beacon,
%TransactionData{content: Slot.serialize(slot) |> Utils.wrap_binary()},
prev_pv,
prev_pub,
next_pub
)
slot_content =
slot
|> Slot.serialize()
|> Utils.wrap_binary()

tx =
Transaction.new_with_keys(
:beacon,
%TransactionData{content: slot_content},
prev_pv,
prev_pub,
next_pub
)

stamp =
%ValidationStamp{
timestamp: slot_time,
proof_of_election: <<0::size(512)>>,
proof_of_integrity: TransactionChain.proof_of_integrity([tx]),
proof_of_work: Crypto.first_node_public_key()
}
|> ValidationStamp.sign()

%{tx | validation_stamp: stamp}
end

defp create_summary_transaction(beacon_slots, subset, summary_time) do
Expand Down