@ -24,6 +24,8 @@ defmodule Explorer.Chain do
import EthereumJSONRPC , only : [ integer_to_quantity : 1 , json_rpc : 2 , fetch_block_internal_transactions : 2 ]
require Logger
alias ABI . { TypeDecoder , TypeEncoder }
alias Ecto.Adapters.SQL
alias Ecto . { Changeset , Multi }
@ -1820,11 +1822,19 @@ defmodule Explorer.Chain do
end
defp fetch_top_bridged_tokens ( paging_options ) do
bridged_tokens_query =
from ( bt in BridgedToken ,
select : bt
)
base_query =
from ( t in Token ,
left_join : bt in subquery ( bridged_tokens_query ) ,
on : t . contract_address_hash == bt . home_token_contract_address_hash ,
where : t . total_supply > ^ 0 ,
where : t . bridged ,
order_by : [ desc : t . holder_count , asc : t . name ] ,
select : [ t , bt ] ,
preload : [ :contract_address ]
)
@ -3581,9 +3591,62 @@ defmodule Explorer.Chain do
end
@doc """
Fetches bridged tokens metadata .
Processes AMB tokens from mediators addresses provided
"""
def process_amb_tokens do
amb_bridge_mediators_var = Application . get_env ( :block_scout_web , :amb_bridge_mediators )
amb_bridge_mediators = ( amb_bridge_mediators_var && String . split ( amb_bridge_mediators_var , " , " ) ) || [ ]
json_rpc_named_arguments = Application . get_env ( :explorer , :json_rpc_named_arguments )
foreign_json_rpc = Application . get_env ( :block_scout_web , :foreign_json_rpc )
eth_call_foreign_json_rpc_named_arguments =
compose_foreign_json_rpc_named_arguments ( json_rpc_named_arguments , foreign_json_rpc )
amb_bridge_mediators
|> Enum . each ( fn amb_bridge_mediator_hash ->
with { :ok , bridge_contract_hash_resp } <-
get_bridge_contract_hash ( amb_bridge_mediator_hash , json_rpc_named_arguments ) ,
bridge_contract_hash <- decode_contract_address_hash_response ( bridge_contract_hash_resp ) ,
{ :ok , destination_chain_id_resp } <- get_destination_chain_id ( bridge_contract_hash , json_rpc_named_arguments ) ,
foreign_chain_id <- decode_contract_integer_response ( destination_chain_id_resp ) ,
{ :ok , home_token_contract_hash_resp } <-
get_erc677_token_hash ( amb_bridge_mediator_hash , json_rpc_named_arguments ) ,
home_token_contract_hash_string <- decode_contract_address_hash_response ( home_token_contract_hash_resp ) ,
{ :ok , home_token_contract_hash } <- Chain . string_to_address_hash ( home_token_contract_hash_string ) ,
{ :ok , foreign_mediator_contract_hash_resp } <-
get_foreign_mediator_contract_hash ( amb_bridge_mediator_hash , json_rpc_named_arguments ) ,
foreign_mediator_contract_hash <- decode_contract_address_hash_response ( foreign_mediator_contract_hash_resp ) ,
{ :ok , foreign_token_contract_hash_resp } <-
get_erc677_token_hash ( foreign_mediator_contract_hash , eth_call_foreign_json_rpc_named_arguments ) ,
foreign_token_contract_hash_string <-
decode_contract_address_hash_response ( foreign_token_contract_hash_resp ) ,
{ :ok , foreign_token_contract_hash } <- Chain . string_to_address_hash ( foreign_token_contract_hash_string ) do
insert_bridged_token_metadata ( home_token_contract_hash , %{
foreign_chain_id : foreign_chain_id ,
foreign_token_address_hash : foreign_token_contract_hash ,
custom_metadata : nil ,
type : " amb "
} )
set_token_bridged_status ( home_token_contract_hash , true )
else
result ->
Logger . debug ( [
" failed to fetch metadata for token bridged with AMB mediator #{ amb_bridge_mediator_hash } " ,
inspect ( result )
] )
end
end )
:ok
end
@doc """
Fetches bridged tokens metadata from OmniBridge .
"""
def fetch_bridged_tokens_metadata ( token_addresses ) do
def fetch_omni_ bridged_tokens_metadata ( token_addresses ) do
Enum . each ( token_addresses , fn token_address_hash ->
created_from_int_tx_success_query =
from (
@ -3627,7 +3690,7 @@ defmodule Explorer.Chain do
set_token_bridged_status ( token_address_hash , false )
created_from_int_tx && created_from_int_tx_success ->
extract_bridged_token_metadata_wrapper ( token_address_hash , created_from_int_tx_success )
extract_omni_ bridged_token_metadata_wrapper ( token_address_hash , created_from_int_tx_success )
true ->
:ok
@ -3637,18 +3700,18 @@ defmodule Explorer.Chain do
:ok
end
defp extract_bridged_token_metadata_wrapper ( token_address_hash , created_from_int_tx_success ) do
multi_token _bridge_mediator= Application . get_env ( :block_scout_web , :multi_token _bridge_mediator )
defp extract_omni_ bridged_token_metadata_wrapper ( token_address_hash , created_from_int_tx_success ) do
omni _bridge_mediator= Application . get_env ( :block_scout_web , :omni _bridge_mediator )
%{ transaction_hash : transaction_hash } = created_from_int_tx_success
if multi_token_bridge_mediator && multi_token _bridge_mediator!== " " do
{ :ok , multi_token _bridge_mediator_hash} = Chain . string_to_address_hash ( multi_token _bridge_mediator)
if omni_bridge_mediator && omni _bridge_mediator!== " " do
{ :ok , omni _bridge_mediator_hash} = Chain . string_to_address_hash ( omni _bridge_mediator)
created_by_amb_mediator_query =
from (
it in InternalTransaction ,
where : it . transaction_hash == ^ transaction_hash ,
where : it . to_address_hash == ^ multi_token _bridge_mediator_hash
where : it . to_address_hash == ^ omni _bridge_mediator_hash
)
created_by_amb_mediator =
@ -3656,10 +3719,10 @@ defmodule Explorer.Chain do
|> Repo . all ( )
if Enum . count ( created_by_amb_mediator ) > 0 do
extract_bridged_token_metadata (
extract_omni_ bridged_token_metadata (
token_address_hash ,
multi_token _bridge_mediator,
multi_token _bridge_mediator_hash
omni _bridge_mediator,
omni _bridge_mediator_hash
)
else
set_token_bridged_status ( token_address_hash , false )
@ -3667,61 +3730,24 @@ defmodule Explorer.Chain do
end
end
defp extract_bridged_token_metadata ( token_address_hash , multi_token_bridge_mediator , multi_token _bridge_mediator_hash) do
defp extract_omni_ bridged_token_metadata ( token_address_hash , omni_bridge_mediator , omni _bridge_mediator_hash) do
json_rpc_named_arguments = Application . get_env ( :explorer , :json_rpc_named_arguments )
# keccak 256 from getTokenInterfacesVersion()
get_token_interfaces_version_signature = " 0x859ba28c "
# keccak 256 from foreignTokenAddress(address)
foreign_token_address_signature = " 0x47ac7d6a "
# keccak 256 from bridgeContract()
bridge_contract_signature = " 0xcd596583 "
# keccak 256 from destinationChainId()
destination_chain_id_signature = " 0xb0750611 "
token_address_hash_abi_encoded =
[ token_address_hash . bytes ]
|> TypeEncoder . encode ( [ :address ] )
|> Base . encode16 ( )
foreign_token_address_method = foreign_token_address_signature <> token_address_hash_abi_encoded
with { :ok , _ } <-
get_token_interfaces_version_signature
|> Contract . eth_call_request ( token_address_hash , 1 , nil , nil )
|> json_rpc ( json_rpc_named_arguments ) ,
get_token_interfaces_version_signature ( token_address_hash , json_rpc_named_arguments ) ,
{ :ok , foreign_token_address_abi_encoded } <-
foreign_token_address_method
|> Contract . eth_call_request (
multi_token_bridge_mediator ,
1 ,
nil ,
nil
)
|> json_rpc ( json_rpc_named_arguments ) ,
{ :ok , bridge_contract } <-
bridge_contract_signature
|> Contract . eth_call_request ( multi_token_bridge_mediator_hash , 1 , nil , nil )
|> json_rpc ( json_rpc_named_arguments ) do
" 0x " <> foreign_token_address_no_prefix = foreign_token_address_abi_encoded
<< _prefix :: binary - size ( 24 ) , foreign_token_address_hash_string_raw :: binary ( ) >> = foreign_token_address_no_prefix
foreign_token_address_hash_string = " 0x " <> foreign_token_address_hash_string_raw
get_foreign_token_address ( omni_bridge_mediator , token_address_hash , json_rpc_named_arguments ) ,
{ :ok , bridge_contract_hash_resp } <-
get_bridge_contract_hash ( omni_bridge_mediator_hash , json_rpc_named_arguments ) do
foreign_token_address_hash_string = decode_contract_address_hash_response ( foreign_token_address_abi_encoded )
{ :ok , foreign_token_address_hash } = Chain . string_to_address_hash ( foreign_token_address_hash_string )
" 0x " <> bridge_contract_no_prefix = bridge_contract
<< _prefix :: binary - size ( 24 ) , multi_token_bridge_hash_string_raw :: binary ( ) >> = bridge_contract_no_prefix
multi_token_bridge_hash_string = " 0x " <> multi_token_bridge_hash_string_raw
multi_token_bridge_hash_string = decode_contract_address_hash_response ( bridge_contract_hash_resp )
{ :ok , foreign_chain_id_abi_encoded } =
destination_chain_id_signature
|> Contract . eth_call_request ( multi_token_bridge_hash_string , 1 , nil , nil )
|> json_rpc ( json_rpc_named_arguments )
get_destination_chain_id ( multi_token_bridge_hash_string , json_rpc_named_arguments )
" 0x " <> foreign_chain_id_abi_encoded_no_prefix = foreign_chain_id_abi_encoded
{ foreign_chain_id , _ } = Integer . parse ( foreign_chain_id_abi_encoded_no_prefix , 16 )
foreign_chain_id = decode_contract_integer_response ( foreign_chain_id_abi_encoded )
foreign_json_rpc = Application . get_env ( :block_scout_web , :foreign_json_rpc )
@ -3731,38 +3757,135 @@ defmodule Explorer.Chain do
insert_bridged_token_metadata ( token_address_hash , %{
foreign_chain_id : foreign_chain_id ,
foreign_token_address_hash : foreign_token_address_hash ,
custom_metadata : custom_metadata
custom_metadata : custom_metadata ,
type : " omni "
} )
set_token_bridged_status ( token_address_hash , true )
end
end
defp get_bridge_contract_hash ( mediator_hash , json_rpc_named_arguments ) do
# keccak 256 from bridgeContract()
bridge_contract_signature = " 0xcd596583 "
perform_eth_call_request ( bridge_contract_signature , mediator_hash , json_rpc_named_arguments )
end
defp get_erc677_token_hash ( mediator_hash , json_rpc_named_arguments ) do
# keccak 256 from erc677token()
erc677_token_signature = " 0x18d8f9c9 "
perform_eth_call_request ( erc677_token_signature , mediator_hash , json_rpc_named_arguments )
end
defp get_foreign_mediator_contract_hash ( mediator_hash , json_rpc_named_arguments ) do
# keccak 256 from mediatorContractOnOtherSide()
mediator_contract_on_other_side_signature = " 0x871c0760 "
perform_eth_call_request ( mediator_contract_on_other_side_signature , mediator_hash , json_rpc_named_arguments )
end
defp get_destination_chain_id ( bridge_contract_hash , json_rpc_named_arguments ) do
# keccak 256 from destinationChainId()
destination_chain_id_signature = " 0xb0750611 "
perform_eth_call_request ( destination_chain_id_signature , bridge_contract_hash , json_rpc_named_arguments )
end
defp get_token_interfaces_version_signature ( token_address_hash , json_rpc_named_arguments ) do
# keccak 256 from getTokenInterfacesVersion()
get_token_interfaces_version_signature = " 0x859ba28c "
perform_eth_call_request ( get_token_interfaces_version_signature , token_address_hash , json_rpc_named_arguments )
end
defp get_foreign_token_address ( omni_bridge_mediator , token_address_hash , json_rpc_named_arguments ) do
# keccak 256 from foreignTokenAddress(address)
foreign_token_address_signature = " 0x47ac7d6a "
token_address_hash_abi_encoded =
[ token_address_hash . bytes ]
|> TypeEncoder . encode ( [ :address ] )
|> Base . encode16 ( )
foreign_token_address_method = foreign_token_address_signature <> token_address_hash_abi_encoded
perform_eth_call_request ( foreign_token_address_method , omni_bridge_mediator , json_rpc_named_arguments )
end
defp perform_eth_call_request ( method , destination , json_rpc_named_arguments )
when not is_nil ( json_rpc_named_arguments ) do
method
|> Contract . eth_call_request ( destination , 1 , nil , nil )
|> json_rpc ( json_rpc_named_arguments )
end
defp perform_eth_call_request ( _method , _destination , json_rpc_named_arguments )
when is_nil ( json_rpc_named_arguments ) do
:error
end
def decode_contract_address_hash_response ( resp ) do
case resp do
" 0x000000000000000000000000 " <> address ->
" 0x " <> address
_ ->
nil
end
end
def decode_contract_integer_response ( resp ) do
case resp do
" 0x " <> integer_encoded ->
{ integer_value , _ } = Integer . parse ( integer_encoded , 16 )
integer_value
_ ->
nil
end
end
defp set_token_bridged_status ( token_address_hash , status ) do
target_token = Repo . get! ( Token , token_address_hash )
case Repo . get ( Token , token_address_hash ) do
% Explorer.Chain.Token { bridged : bridged } = target_token ->
if ! bridged do
token = Changeset . change ( target_token , bridged : status )
Repo . update ( token )
end
_ ->
:ok
end
end
defp insert_bridged_token_metadata ( token_address_hash , %{
foreign_chain_id : foreign_chain_id ,
foreign_token_address_hash : foreign_token_address_hash ,
custom_metadata : custom_metadata
custom_metadata : custom_metadata ,
type : type
} ) do
target_token = Repo . get ( Token , token_address_hash )
if target_token do
{ :ok , _ } =
Repo . insert (
% BridgedToken {
home_token_contract_address_hash : token_address_hash ,
foreign_chain_id : foreign_chain_id ,
foreign_token_contract_address_hash : foreign_token_address_hash ,
custom_metadata : custom_metadata
custom_metadata : custom_metadata ,
type : type
} ,
on_conflict : :nothing
)
end
end
# get_bridged_token_custom_metadata function currently gets Balancer token composite tokens with their weights
# Fetches custom metadata for bridged tokens from the node.
# Currently, gets Balancer token composite tokens with their weights
# from foreign chain
defp get_bridged_token_custom_metadata ( foreign_token_address_hash , json_rpc_named_arguments , foreign_json_rpc )
when not is_nil ( foreign_json_rpc ) and foreign_json_rpc !== " " do
@ -3823,7 +3946,8 @@ defmodule Explorer.Chain do
nil
end
defp compose_foreign_json_rpc_named_arguments ( json_rpc_named_arguments , foreign_json_rpc ) do
defp compose_foreign_json_rpc_named_arguments ( json_rpc_named_arguments , foreign_json_rpc )
when foreign_json_rpc != " " do
{ _ , eth_call_foreign_json_rpc_named_arguments } =
Keyword . get_and_update ( json_rpc_named_arguments , :transport_options , fn transport_options ->
{ _ , updated_transport_options } =
@ -3835,6 +3959,16 @@ defmodule Explorer.Chain do
eth_call_foreign_json_rpc_named_arguments
end
defp compose_foreign_json_rpc_named_arguments ( _json_rpc_named_arguments , foreign_json_rpc )
when foreign_json_rpc == " " do
nil
end
defp compose_foreign_json_rpc_named_arguments ( json_rpc_named_arguments , _foreign_json_rpc )
when is_nil ( json_rpc_named_arguments ) do
nil
end
defp update_transport_options_set_foreign_json_rpc ( transport_options , foreign_json_rpc ) do
Keyword . get_and_update ( transport_options , :method_to_url , fn method_to_url ->
{ _ , updated_method_to_url } =
Victor Baranov
4 years ago