zachdaniel
6 years ago
parent
1908097a9b
commit
48f363e0c6
@ -0,0 +1,47 @@ |
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<table summary="<%= gettext "Transaction Info" %>" class="table thead-light table-bordered table-responsive transaction-info-table"> |
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<tr> |
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<td><%= gettext "Method Id" %></td> |
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<td colspan="3"><code>0x<%= @method_id %></code></td> |
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</tr> |
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<tr> |
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<td>Call</td> |
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<td colspan="3"><code><%= @text %></code></td> |
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</tr> |
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</table> |
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|
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<%= unless Enum.empty?(@mapping) do %> |
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<table summary="<%= gettext "Transaction Inputs" %>" class="table thead-light table-bordered table-responsive"> |
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<tr> |
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<th scope="col"></th> |
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<th scope="col"><%= gettext "Name" %></th> |
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<th scope="col"><%= gettext "Type" %></th> |
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<th scope="col"><%= gettext "Data" %></th> |
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<tr> |
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<%= for {name, type, value} <- @mapping do %> |
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<tr> |
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<th scope="row"> |
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<%= case BlockScoutWeb.ABIEncodedValueView.copy_text(type, value) do %> |
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<% :error -> %> |
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<%= nil %> |
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<% copy_text -> %> |
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<button type="button" class="copy icon-link" data-toggle="tooltip" data-placement="top" data-clipboard-text="<%= copy_text %>" aria-label="<%= gettext "Copy Value" %>"> |
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<i class="fas fa-clone"></i> |
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</button> |
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<% end %> |
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</th> |
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<td><%= name %></td> |
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<td><%= type %></td> |
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<td> |
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<%= case BlockScoutWeb.ABIEncodedValueView.value_html(type, value) do %> |
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<% :error -> %> |
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<div class="alert alert-danger"> |
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<%= gettext "Error rendering value" %> |
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</div> |
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<% value -> %> |
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<pre class="transaction-input-text tile"><code><%= value %></code></pre> |
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<% end %> |
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</td> |
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</tr> |
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<% end %> |
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</table> |
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<% end %> |
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@ -0,0 +1,74 @@ |
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defmodule Explorer.Chain.ContractMethod do |
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@moduledoc """ |
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The representation of an individual item from the ABI of a verified smart contract. |
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""" |
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|
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require Logger |
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|
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use Explorer.Schema |
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|
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alias Explorer.Chain.{Hash, MethodIdentifier} |
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alias Explorer.Repo |
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|
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@type t :: %__MODULE__{ |
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identifier: MethodIdentifier.t(), |
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abi: map(), |
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type: String.t() |
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} |
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|
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schema "contract_methods" do |
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field(:identifier, MethodIdentifier) |
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field(:abi, :map) |
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field(:type, :string) |
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|
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timestamps() |
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end |
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|
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def upsert_from_abi(abi, address_hash) do |
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{successes, errors} = |
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abi |
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|> Enum.reject(fn selector -> |
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Map.get(selector, "type") in ["fallback", "constructor"] |
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end) |
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|> Enum.reduce({[], []}, fn selector, {successes, failures} -> |
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case abi_element_to_contract_method(selector) do |
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{:error, message} -> |
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{successes, [message | failures]} |
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|
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selector -> |
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{[selector | successes], failures} |
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end |
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end) |
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|
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unless Enum.empty?(errors) do |
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Logger.error(fn -> |
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["Error parsing some abi elements at ", Hash.to_iodata(address_hash), ": ", Enum.intersperse(errors, "\n")] |
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end) |
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end |
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|
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Repo.insert_all(__MODULE__, successes, on_conflict: :nothing, conflict_target: [:identifier, :abi]) |
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end |
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|
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defp abi_element_to_contract_method(element) do |
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case ABI.parse_specification([element], include_events?: true) do |
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[selector] -> |
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now = DateTime.utc_now() |
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|
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%{ |
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identifier: selector.method_id, |
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abi: element, |
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type: Atom.to_string(selector.type), |
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inserted_at: now, |
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updated_at: now |
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} |
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|
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_ -> |
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{:error, "Failed to parse abi row."} |
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end |
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rescue |
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e -> |
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message = Exception.format(:error, e) |
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{:error, message} |
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end |
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end |
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@ -0,0 +1,36 @@ |
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defmodule Explorer.Chain.MethodIdentifier do |
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@moduledoc """ |
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The first four bytes of the [KECCAK-256](https://en.wikipedia.org/wiki/SHA-3) hash of a contract method or event. |
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Represented in the database as a 4 byte integer, decodes into a 4 byte bitstring |
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""" |
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|
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@behaviour Ecto.Type |
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@type t :: binary |
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@impl true |
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def type, do: :integer |
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@impl true |
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@spec load(integer) :: {:ok, t()} |
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def load(value) do |
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{:ok, <<value::integer-signed-32>>} |
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end |
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|
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@impl true |
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@spec cast(binary) :: {:ok, t()} | :error |
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def cast(<<_::binary-size(4)>> = identifier) do |
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{:ok, identifier} |
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end |
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|
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def cast(_), do: :error |
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@impl true |
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@spec dump(t()) :: {:ok, integer} | :error |
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def dump(<<num::integer-signed-32>>) do |
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{:ok, num} |
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end |
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|
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def dump(_), do: :error |
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end |
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@ -0,0 +1,15 @@ |
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defmodule Explorer.Repo.Migrations.AddContractMethods do |
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use Ecto.Migration |
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def change do |
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create table(:contract_methods) do |
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add(:identifier, :integer, null: false) |
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add(:abi, :map, null: false) |
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add(:type, :string, null: false) |
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timestamps() |
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end |
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create(unique_index(:contract_methods, [:identifier, :abi])) |
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end |
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end |
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