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@ -22,9 +22,9 @@ defmodule Explorer.Chain do |
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select: 3 |
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select: 3 |
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] |
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] |
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import EthereumJSONRPC, only: [integer_to_quantity: 1, fetch_block_internal_transactions: 2] |
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import EthereumJSONRPC, only: [integer_to_quantity: 1, json_rpc: 2, fetch_block_internal_transactions: 2] |
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alias ABI.TypeDecoder |
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alias ABI.{TypeDecoder, TypeEncoder} |
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alias Ecto.Adapters.SQL |
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alias Ecto.Adapters.SQL |
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alias Ecto.{Changeset, Multi} |
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alias Ecto.{Changeset, Multi} |
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@ -42,6 +42,7 @@ defmodule Explorer.Chain do |
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Address.CurrentTokenBalance, |
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Address.CurrentTokenBalance, |
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Address.TokenBalance, |
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Address.TokenBalance, |
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Block, |
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Block, |
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BridgedToken, |
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Data, |
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Data, |
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DecompiledSmartContract, |
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DecompiledSmartContract, |
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Hash, |
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Hash, |
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@ -1728,7 +1729,7 @@ defmodule Explorer.Chain do |
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base_query = |
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base_query = |
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from(t in Token, |
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from(t in Token, |
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where: t.total_supply > ^0, |
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where: t.total_supply > ^0, |
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order_by: [desc: t.holder_count], |
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order_by: [desc: t.holder_count, asc: t.name], |
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preload: [:contract_address] |
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preload: [:contract_address] |
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) |
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) |
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@ -3375,6 +3376,151 @@ defmodule Explorer.Chain do |
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Repo.stream_reduce(query, [], &[&1 | &2]) |
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Repo.stream_reduce(query, [], &[&1 | &2]) |
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end |
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end |
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@doc """ |
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Returns a list of token addresses `t:Address.t/0`s that don't have an |
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bridged property revealed. |
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""" |
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def unprocessed_token_addresses_to_reveal_bridged_tokens do |
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query = |
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from(t in Token, |
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where: is_nil(t.bridged), |
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select: t.contract_address_hash |
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) |
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Repo.stream_reduce(query, [], &[&1 | &2]) |
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end |
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@doc """ |
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Fetches bridges status for tokens. |
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""" |
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def fetch_tokens_bridged_status(token_addresses) do |
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Enum.each(token_addresses, fn token_address_hash -> |
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created_from_factory_query = |
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from( |
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it in InternalTransaction, |
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where: it.created_contract_address_hash == ^token_address_hash |
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) |
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created_from_factory = |
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created_from_factory_query |
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|> Repo.one() |
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if created_from_factory do |
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multi_token_bridge_mediator = Application.get_env(:block_scout_web, :multi_token_bridge_mediator) |
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%{transaction_hash: transaction_hash} = created_from_factory |
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if multi_token_bridge_mediator && multi_token_bridge_mediator !== "" do |
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{:ok, multi_token_bridge_mediator_hash} = Chain.string_to_address_hash(multi_token_bridge_mediator) |
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created_by_amb_mediator_query = |
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from( |
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it in InternalTransaction, |
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where: it.transaction_hash == ^transaction_hash, |
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where: it.to_address_hash == ^multi_token_bridge_mediator_hash |
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) |
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created_by_amb_mediator = |
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created_by_amb_mediator_query |
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|> Repo.all() |
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if Enum.count(created_by_amb_mediator) > 0 do |
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json_rpc_named_arguments = Application.get_env(:explorer, :json_rpc_named_arguments) |
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# keccak 256 from getTokenInterfacesVersion() |
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get_token_interfaces_version_signature = "0x859ba28c" |
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# keccak 256 from foreignTokenAddress(address) |
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foreign_token_address_signature = "0x47ac7d6a" |
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# keccak 256 from bridgeContract() |
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bridge_contract_signature = "0xcd596583" |
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# keccak 256 from destinationChainId() |
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destination_chain_id_signature = "0xb0750611" |
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token_address_hash_abi_encoded = |
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[token_address_hash.bytes] |
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|> TypeEncoder.encode([:address]) |
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|> Base.encode16() |
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foreign_token_address_method = foreign_token_address_signature <> token_address_hash_abi_encoded |
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with {:ok, _} <- |
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get_token_interfaces_version_signature |
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|> Contract.eth_call_request(token_address_hash, 1, nil, nil) |
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|> json_rpc(json_rpc_named_arguments), |
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{:ok, foreign_token_address_abi_encoded} <- |
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foreign_token_address_method |
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|> Contract.eth_call_request( |
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multi_token_bridge_mediator, |
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1, |
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nil, |
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nil |
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) |
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|> json_rpc(json_rpc_named_arguments), |
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{:ok, bridge_contract} <- |
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bridge_contract_signature |
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|> Contract.eth_call_request(multi_token_bridge_mediator_hash, 1, nil, nil) |
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|> json_rpc(json_rpc_named_arguments) do |
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"0x" <> foreign_token_address_no_prefix = foreign_token_address_abi_encoded |
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<<_prefix::binary-size(24), foreign_token_address_hash_string_raw::binary()>> = |
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foreign_token_address_no_prefix |
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foreign_token_address_hash_string = "0x" <> foreign_token_address_hash_string_raw |
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{:ok, foreign_token_address_hash} = Chain.string_to_address_hash(foreign_token_address_hash_string) |
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"0x" <> bridge_contract_no_prefix = bridge_contract |
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<<_prefix::binary-size(24), multi_token_bridge_hash_string_raw::binary()>> = bridge_contract_no_prefix |
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multi_token_bridge_hash_string = "0x" <> multi_token_bridge_hash_string_raw |
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{:ok, foreign_chain_id_abi_encoded} = |
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destination_chain_id_signature |
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|> Contract.eth_call_request(multi_token_bridge_hash_string, 1, nil, nil) |
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|> json_rpc(json_rpc_named_arguments) |
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"0x" <> foreign_chain_id_abi_encoded_no_prefix = foreign_chain_id_abi_encoded |
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{foreign_chain_id, _} = Integer.parse(foreign_chain_id_abi_encoded_no_prefix) |
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set_bridged_token_metadata(token_address_hash, %{ |
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foreign_chain_id: foreign_chain_id, |
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foreign_token_address_hash: foreign_token_address_hash |
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}) |
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set_token_bridged_status(token_address_hash, true) |
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end |
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else |
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set_token_bridged_status(token_address_hash, false) |
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end |
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end |
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else |
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set_token_bridged_status(token_address_hash, false) |
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end |
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end) |
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:ok |
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end |
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defp set_token_bridged_status(token_address_hash, status) do |
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target_token = Repo.get!(Token, token_address_hash) |
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token = Changeset.change(target_token, bridged: status) |
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Repo.update(token) |
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end |
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defp set_bridged_token_metadata(token_address_hash, %{ |
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foreign_chain_id: foreign_chain_id, |
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foreign_token_address_hash: foreign_token_address_hash |
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}) do |
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{:ok, _} = |
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Repo.insert( |
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%BridgedToken{ |
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home_token_contract_address_hash: token_address_hash, |
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foreign_chain_id: foreign_chain_id, |
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foreign_token_contract_address_hash: foreign_token_address_hash |
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}, |
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on_conflict: :nothing |
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) |
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end |
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@doc """ |
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@doc """ |
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Fetches a `t:Token.t/0` by an address hash. |
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Fetches a `t:Token.t/0` by an address hash. |
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@ -3394,8 +3540,11 @@ defmodule Explorer.Chain do |
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query = |
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query = |
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from( |
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from( |
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token in Token, |
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t in Token, |
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where: token.contract_address_hash == ^hash |
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left_join: bt in BridgedToken, |
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on: t.contract_address_hash == bt.home_token_contract_address_hash, |
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where: t.contract_address_hash == ^hash, |
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select: [t, bt] |
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) |
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) |
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query |
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query |
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@ -3405,8 +3554,16 @@ defmodule Explorer.Chain do |
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nil -> |
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nil -> |
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{:error, :not_found} |
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{:error, :not_found} |
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%Token{} = token -> |
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[%Token{} = token, %BridgedToken{} = bridged_token] -> |
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{:ok, token} |
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foreign_token_contract_address_hash = Map.get(bridged_token, :foreign_token_contract_address_hash) |
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foreign_chain_id = Map.get(bridged_token, :foreign_chain_id) |
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extended_token = |
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token |
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|> Map.put(:foreign_token_contract_address_hash, foreign_token_contract_address_hash) |
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|> Map.put(:foreign_chain_id, foreign_chain_id) |
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{:ok, extended_token} |
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end |
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end |
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end |
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end |
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Victor Baranov
4 years ago