Merge branch 'master' into ab-allow-enabling-internal-transaction-fetching-for-geth

5 years ago · 6a7807f355
parent e8922ac4a2 9718717f77
commit 6a7807f355
37 changed files with 441 additions and 81 deletions
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@ -39,9 +39,6 @@ jobs:

      - run: mix deps.get

-      - run:
-          command: sed -i '68,68 s/^/%/' ./deps/hackney/src/hackney_ssl.erl
-
      - restore_cache:
          keys:
            - v7-npm-install-{{ .Branch }}-{{ checksum "apps/block_scout_web/assets/package-lock.json" }}
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -1,6 +1,7 @@
 ## Current

 ### Features
+- [#2772](https://github.com/poanetwork/blockscout/pull/2772) - add token instance images to the token inventory tab
 - [#2733](https://github.com/poanetwork/blockscout/pull/2733) - Add cache for first page of uncles
 - [#2735](https://github.com/poanetwork/blockscout/pull/2735) - Add pending transactions cache
 - [#2726](https://github.com/poanetwork/blockscout/pull/2726) - Remove internal_transaction block_number setting from blocks runner
@ -13,8 +14,17 @@
 - [#2665](https://github.com/poanetwork/blockscout/pull/2665) - new menu layout for mobile devices
 - [#2663](https://github.com/poanetwork/blockscout/pull/2663) - Fetch address counters in parallel
 - [#2642](https://github.com/poanetwork/blockscout/pull/2642) - add ERC721 coin instance page
+- [#2762](https://github.com/poanetwork/blockscout/pull/2762) - on-fly fetching of token instances
+- [#2470](https://github.com/poanetwork/blockscout/pull/2470) - Allow Realtime Fetcher to wait for small skips

 ### Fixes
+- [#2770](https://github.com/poanetwork/blockscout/pull/2770) - do not re-fetch token instances without uris
+- [#2769](https://github.com/poanetwork/blockscout/pull/2769) - optimize token token transfers query
+- [#2761](https://github.com/poanetwork/blockscout/pull/2761) - add indexes for token instances fetching queries
+- [#2767](https://github.com/poanetwork/blockscout/pull/2767) - fix websocket subscriptions with token instances
+- [#2765](https://github.com/poanetwork/blockscout/pull/2765) - fixed width issue for cards in mobile view for Transaction Details page
+- [#2755](https://github.com/poanetwork/blockscout/pull/2755) - various token instance fetcher fixes
+- [#2753](https://github.com/poanetwork/blockscout/pull/2753) - fix nft token instance images
 - [#2750](https://github.com/poanetwork/blockscout/pull/2750) - fixed contract buttons color for NFT token instance on each theme
 - [#2746](https://github.com/poanetwork/blockscout/pull/2746) - fixed wrong alignment in logs decoded view
 - [#2745](https://github.com/poanetwork/blockscout/pull/2745) - optimize addresses page
@ -42,6 +52,7 @@ fixed menu hovers in dark mode desktop view

 ### Chore
 - [#2752](https://github.com/poanetwork/blockscout/pull/2752) - allow enabling internal transactions for simple token transfers txs
+- [#2749](https://github.com/poanetwork/blockscout/pull/2749) - fix opt 22.1 support
 - [#2724](https://github.com/poanetwork/blockscout/pull/2724) - fix ci by commenting a line in hackney library
 - [#2708](https://github.com/poanetwork/blockscout/pull/2708) - add log index to logs view
 - [#2723](https://github.com/poanetwork/blockscout/pull/2723) - get rid of ex_json_schema warnings
--- a/README.md
+++ b/README.md
@ -33,7 +33,7 @@ Currently available full-featured block explorers (Etherscan, Etherchain, Blockc
 | [Callisto](https://blockscout.com/callisto/mainnet) | [Goerli Testnet](https://blockscout.com/eth/goerli) | [ARTIS](https://explorer.sigma1.artis.network) | [Celo Testnet](https://alfajores-blockscout.celo-testnet.org/) |
 | [Ethereum Classic](https://blockscout.com/etc/mainnet) | [Kovan Testnet](https://blockscout.com/eth/kovan) | [Ether-1](https://blocks.ether1.wattpool.net/) | [Matic Testnet](https://explorer.testnet2.matic.network/) |
 | [Ethereum Mainnet](https://blockscout.com/eth/mainnet) | [LUKSO L14 Testnet](https://blockscout.com/lukso/l14) | [Kotti Testnet](https://kottiexplorer.ethernode.io/) | [Mordor Testnet](https://mordorexplorer.ethernode.io/) |
-| [POA Core Network](https://blockscout.com/poa/core) | [POA Sokol Testnet](https://blockscout.com/poa/sokol) | [Fuse Network](https://explorer.fuse.io/) |  |
+| [POA Core Network](https://blockscout.com/poa/core)| [POA Sokol Testnet](https://blockscout.com/poa/sokol) | [Fuse Network](https://explorer.fuse.io/)  | [Athereum Testnet](http://athexplorer.ava.network/) |
 | [RSK](https://blockscout.com/rsk/mainnet) | [Rinkeby Testnet](https://blockscout.com/eth/rinkeby) | [Oasis Labs](https://blockexplorer.oasiscloud.io/) |  |
 | [xDai Chain](https://blockscout.com/poa/dai) | [Ropsten Testnet](https://blockscout.com/eth/ropsten) | [Petrichor](https://explorer.petrachor.com/) |  |
 |  |  | [PIRL](http://pirl.es/) |  |
--- a/apps/block_scout_web/assets/css/app.scss
+++ b/apps/block_scout_web/assets/css/app.scss
@ -116,6 +116,7 @@ $fa-font-path: "~@fortawesome/fontawesome-free/webfonts";
@import "components/btn_no_border";
@import "components/custom_tooltips_block_details";
@import "components/_erc721_token_image_container";
+@import "components/_inventory_token_instance_image_container";

@import "theme/dark-theme";

--- a/apps/block_scout_web/assets/css/components/_card.scss
+++ b/apps/block_scout_web/assets/css/components/_card.scss
@ -34,7 +34,9 @@ $card-tab-icon-color-active: #fff !default;
 .card-background-1 {
  background-color: $card-background-1;
  color: $card-background-1-text-color;
-
+  @include media-breakpoint-down(sm) {
+    margin-left: 15px;
+  }
  a:not(.dropdown-item),
  a:not(.dropdown-item):hover {
    color: $card-background-1-text-color;
@ -249,3 +251,9 @@ $card-tab-icon-color-active: #fff !default;
    }
  }
 }
+
+.mob-transaction {
+  @include media-breakpoint-down(sm) {
+    margin-left: 15px!important;
+  } 
+}
--- a/apps/block_scout_web/assets/css/components/_inventory_token_instance_image_container.scss
+++ b/apps/block_scout_web/assets/css/components/_inventory_token_instance_image_container.scss
@ -0,0 +1,10 @@
+/* ERC721 image block */
+.inventory-erc721-image {
+    display: flex;
+    justify-content: center;
+}
+
+ .inventory-erc721-image img {
+    height: 50px;
+}
+/* ERC721 image block end */
--- a/apps/block_scout_web/lib/block_scout_web/csp_header.ex
+++ b/apps/block_scout_web/lib/block_scout_web/csp_header.ex
@ -15,7 +15,7 @@ defmodule BlockScoutWeb.CSPHeader do
        default-src 'self';\
        script-src 'self' 'unsafe-inline' 'unsafe-eval';\
        style-src 'self' 'unsafe-inline' 'unsafe-eval' https://fonts.googleapis.com;\
-        img-src 'self' 'unsafe-inline' 'unsafe-eval' data: https:;\
+        img-src 'self' * data:;\
        font-src 'self' 'unsafe-inline' 'unsafe-eval' https://fonts.gstatic.com data:;\
      "
    })
--- a/apps/block_scout_web/lib/block_scout_web/templates/layout/_topnav.html.eex
+++ b/apps/block_scout_web/lib/block_scout_web/templates/layout/_topnav.html.eex
@ -27,7 +27,7 @@
        document.getElementById("navbar-logo").style.filter = "brightness(0) invert(1)";
      }
    </script>
-    <button class="navbar-toggler" id="toggleButton" onclick="switchVisible(); type="button"  value="Click" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="<%= gettext("Toggle navigation") %>">
+    <button class="navbar-toggler" id="toggleButton" type="button"  value="Click" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="<%= gettext("Toggle navigation") %>">
      <span class="navbar-toggler-icon" id="toggleImage1" style="width="26px;"></span>
      <span class="navbar-toggler-icon-1" id="toggleImage2"> <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" id="Capa_1" x="0px" y="0px" viewBox="0 0 47.971 47.971" style="enable-background:new 0 0 47.971 47.971; width: 17px;
    transform: translate(0px, -1.5px);" xml:space="preserve"> <g><g>
--- a/apps/block_scout_web/lib/block_scout_web/templates/tokens/inventory/_token.html.eex
+++ b/apps/block_scout_web/lib/block_scout_web/templates/tokens/inventory/_token.html.eex
@ -24,5 +24,12 @@
        </span>
      </span>
    </div>
+
+    <div class="pl-5 col-md-2 d-flex flex-column align-items-left justify-content-start justify-content-lg-center">
+      <!-- substitute the span with <img class="tile-image" /> to token with images -->
+      <div class="inventory-erc721-image" >
+        <img src=<%=image_src(@token_transfer.instance)%> />
+      </div>
+    </div>
  </div>
 </div>
--- a/apps/block_scout_web/lib/block_scout_web/templates/transaction/_tile.html.eex
+++ b/apps/block_scout_web/lib/block_scout_web/templates/transaction/_tile.html.eex
@ -38,11 +38,11 @@
        <div class="d-flex flex-column mt-2">
          <% [first_token_transfer | remaining_token_transfers] = @transaction.token_transfers %>

-          <%= render "_token_transfer.html", address: assigns[:current_address], token_transfer: first_token_transfer, conn: @conn %>
+          <%= render "_token_transfer.html", address: assigns[:current_address], token_transfer: first_token_transfer %>

          <div class="collapse token-transfer-toggle" id="transaction-<%= @transaction.hash %>">
            <%= for token_transfer <- remaining_token_transfers do %>
-              <%= render "_token_transfer.html", address: assigns[:current_address], token_transfer: token_transfer, conn: @conn %>
+              <%= render "_token_transfer.html", address: assigns[:current_address], token_transfer: token_transfer %>
            <% end %>
          </div>
        </div>
--- a/apps/block_scout_web/lib/block_scout_web/templates/transaction/_token_transfer.html.eex
+++ b/apps/block_scout_web/lib/block_scout_web/templates/transaction/_token_transfer.html.eex
@ -22,7 +22,7 @@
  <span class="col-xs-12 col-lg-4 ml-3 ml-sm-0 text-truncate">
    <%= case token_transfer_amount(@token_transfer) do %>
      <% {:ok, :erc721_instance} -> %>
-        <%= "TokenID ["%><%= link(@token_transfer.token_id, to: token_instance_path(@conn, :show,  @token_transfer.token.contract_address_hash, to_string(@token_transfer.token_id))) %><%= "] " %>
+        <%= "TokenID ["%><%= link(@token_transfer.token_id, to: token_instance_path(BlockScoutWeb.Endpoint, :show,  @token_transfer.token.contract_address_hash, to_string(@token_transfer.token_id))) %><%= "] " %>
      <% {:ok, value} -> %>
        <%= "#{value} " %>
    <% end %>
--- a/apps/block_scout_web/lib/block_scout_web/templates/transaction/overview.html.eex
+++ b/apps/block_scout_web/lib/block_scout_web/templates/transaction/overview.html.eex
@ -227,7 +227,7 @@
      </div>
    <% end %>
      <!-- Gas -->
-      <div class="card flex-grow-1 ml-0 ml-md-5 ml-lg-0">
+      <div class="card flex-grow-1 ml-0 ml-md-5 ml-lg-0 mob-transaction">
        <div class="card-body card-body-flex-column-space-between">
          <h2 class="card-title balance-card-title"> <%= gettext "Gas" %> </h2>
          <div class="text-right">
--- a/apps/block_scout_web/lib/block_scout_web/views/tokens/instance/overview_view.ex
+++ b/apps/block_scout_web/lib/block_scout_web/views/tokens/instance/overview_view.ex
@ -20,11 +20,22 @@ defmodule BlockScoutWeb.Tokens.Instance.OverviewView do
  def image_src(nil), do: "/images/controller.svg"

  def image_src(instance) do
-    cond do
-      instance.metadata && instance.metadata["image_url"] -> instance.metadata["image_url"]
-      instance.metadata && instance.metadata["image"] -> instance.metadata["image"]
-      true -> image_src(nil)
-    end
+    result =
+      cond do
+        instance.metadata && instance.metadata["image_url"] ->
+          instance.metadata["image_url"]
+
+        instance.metadata && instance.metadata["image"] ->
+          instance.metadata["image"]
+
+        instance.metadata && instance.metadata["properties"]["image"]["description"] ->
+          instance.metadata["properties"]["image"]["description"]
+
+        true ->
+          image_src(nil)
+      end
+
+    if String.trim(result) == "", do: image_src(nil), else: result
  end

  def total_supply_usd(token) do
--- a/apps/block_scout_web/lib/block_scout_web/views/tokens/inventory_view.ex
+++ b/apps/block_scout_web/lib/block_scout_web/views/tokens/inventory_view.ex
@ -1,5 +1,7 @@
 defmodule BlockScoutWeb.Tokens.InventoryView do
  use BlockScoutWeb, :view

+  import BlockScoutWeb.Tokens.Instance.OverviewView, only: [image_src: 1]
+
  alias BlockScoutWeb.Tokens.OverviewView
 end
--- a/apps/block_scout_web/priv/gettext/default.pot
+++ b/apps/block_scout_web/priv/gettext/default.pot
@ -925,7 +925,7 @@ msgstr ""
 #: lib/block_scout_web/templates/tokens/transfer/index.html.eex:15
 #: lib/block_scout_web/templates/transaction/_tabs.html.eex:4
 #: lib/block_scout_web/templates/transaction_token_transfer/index.html.eex:7
-#: lib/block_scout_web/views/tokens/instance/overview_view.ex:60
+#: lib/block_scout_web/views/tokens/instance/overview_view.ex:71
 #: lib/block_scout_web/views/tokens/overview_view.ex:35
 #: lib/block_scout_web/views/transaction_view.ex:313
 msgid "Token Transfers"
@ -1855,7 +1855,7 @@ msgstr ""
 #, elixir-format
 #: lib/block_scout_web/templates/tokens/instance/metadata/index.html.eex:18
 #: lib/block_scout_web/templates/tokens/instance/overview/_tabs.html.eex:10
-#: lib/block_scout_web/views/tokens/instance/overview_view.ex:61
+#: lib/block_scout_web/views/tokens/instance/overview_view.ex:72
 msgid "Metadata"
 msgstr ""

--- a/apps/block_scout_web/priv/gettext/en/LC_MESSAGES/default.po
+++ b/apps/block_scout_web/priv/gettext/en/LC_MESSAGES/default.po
@ -925,7 +925,7 @@ msgstr ""
 #: lib/block_scout_web/templates/tokens/transfer/index.html.eex:15
 #: lib/block_scout_web/templates/transaction/_tabs.html.eex:4
 #: lib/block_scout_web/templates/transaction_token_transfer/index.html.eex:7
-#: lib/block_scout_web/views/tokens/instance/overview_view.ex:60
+#: lib/block_scout_web/views/tokens/instance/overview_view.ex:71
 #: lib/block_scout_web/views/tokens/overview_view.ex:35
 #: lib/block_scout_web/views/transaction_view.ex:313
 msgid "Token Transfers"
@ -1820,7 +1820,7 @@ msgstr ""
 msgid "Copy Token ID"
 msgstr ""

-#, elixir-format, fuzzy
+#, elixir-format
 #: lib/block_scout_web/templates/tokens/instance/overview/_details.html.eex:69
 #: lib/block_scout_web/templates/tokens/overview/_details.html.eex:67
 msgid "Decimals"
@ -1855,16 +1855,16 @@ msgstr ""
 #, elixir-format
 #: lib/block_scout_web/templates/tokens/instance/metadata/index.html.eex:18
 #: lib/block_scout_web/templates/tokens/instance/overview/_tabs.html.eex:10
-#: lib/block_scout_web/views/tokens/instance/overview_view.ex:61
+#: lib/block_scout_web/views/tokens/instance/overview_view.ex:72
 msgid "Metadata"
 msgstr ""

-#, elixir-format, fuzzy
+#, elixir-format
 #: lib/block_scout_web/templates/api_docs/_action_tile.html.eex:58
 msgid "Module"
 msgstr ""

-#, elixir-format, fuzzy
+#, elixir-format
 #: lib/block_scout_web/templates/chain/show.html.eex:56
 msgid "Total transactions"
 msgstr ""
--- a/apps/block_scout_web/test/block_scout_web/views/tokens/instance/overview_view_test.exs
+++ b/apps/block_scout_web/test/block_scout_web/views/tokens/instance/overview_view_test.exs
@ -0,0 +1,41 @@
+defmodule BlockScoutWeb.Tokens.Instance.OverviewViewTest do
+  use BlockScoutWeb.ConnCase, async: true
+
+  alias BlockScoutWeb.Tokens.Instance.OverviewView
+
+  describe "image_src/1" do
+    test "fetches image from ['properties']['image']['description'] path" do
+      json = """
+        {
+          "type": "object",
+          "title": "TestCore Metadata",
+          "properties": {
+            "name": {
+              "type": "string",
+              "description": "Identifies the asset to which this NFT represents"
+            },
+            "image": {
+              "type": "string",
+              "description": "https://img.paoditu.com/images/cut_trace_images/6b/5f/5b754f6b5f3b5_500_500.jpg"
+            },
+            "description": {
+              "type": "string",
+              "description": "Describes the asset to which this NFT represents"
+            }
+          }
+        }
+      """
+
+      data = Jason.decode!(json)
+
+      assert OverviewView.image_src(%{metadata: data}) ==
+               "https://img.paoditu.com/images/cut_trace_images/6b/5f/5b754f6b5f3b5_500_500.jpg"
+    end
+
+    test "handles empty images" do
+      instance = %{metadata: %{"image" => ""}}
+
+      assert OverviewView.image_src(instance) != ""
+    end
+  end
+end
--- a/apps/ethereum_jsonrpc/mix.exs
+++ b/apps/ethereum_jsonrpc/mix.exs
@ -90,7 +90,8 @@ defmodule EthereumJsonrpc.MixProject do
      # `EthereumJSONRPC.WebSocket`
      {:websocket_client, "~> 1.3"},
      {:decimal, "~> 1.0"},
-      {:decorator, "~> 1.2"}
+      {:decorator, "~> 1.2"},
+      {:hackney, "~> 1.15.2"}
    ]
  end
 end
--- a/apps/explorer/lib/explorer/chain.ex
+++ b/apps/explorer/lib/explorer/chain.ex
@ -2945,8 +2945,10 @@ defmodule Explorer.Chain do
        inner_join: token in Token,
        on: token.contract_address_hash == token_transfer.token_contract_address_hash,
        left_join: instance in Instance,
-        on: token_transfer.token_id == instance.token_id,
-        where: token.type == ^"ERC-721" and is_nil(instance.token_id),
+        on:
+          token_transfer.token_id == instance.token_id and
+            token_transfer.token_contract_address_hash == instance.token_contract_address_hash,
+        where: token.type == ^"ERC-721" and is_nil(instance.token_id) and not is_nil(token_transfer.token_id),
        distinct: [token_transfer.token_contract_address_hash, token_transfer.token_id],
        select: %{contract_address_hash: token_transfer.token_contract_address_hash, token_id: token_transfer.token_id}
      )
--- a/apps/explorer/lib/explorer/chain/token/instance.ex
+++ b/apps/explorer/lib/explorer/chain/token/instance.ex
@ -12,18 +12,21 @@ defmodule Explorer.Chain.Token.Instance do
  * `token_id` - ID of the token
  * `token_contract_address_hash` - Address hash foreign key
  * `metadata` - Token instance metadata
+  * `error` - error fetching token instance
  """

  @type t :: %Instance{
          token_id: non_neg_integer(),
          token_contract_address_hash: Hash.Address.t(),
-          metadata: Map.t()
+          metadata: Map.t(),
+          error: String.t()
        }

  @primary_key false
  schema "token_instances" do
    field(:token_id, :decimal, primary_key: true)
    field(:metadata, :map)
+    field(:error, :string)

    belongs_to(
      :token,
@ -39,7 +42,7 @@ defmodule Explorer.Chain.Token.Instance do

  def changeset(%Instance{} = instance, params \\ %{}) do
    instance
-    |> cast(params, [:token_id, :metadata, :token_contract_address_hash])
+    |> cast(params, [:token_id, :metadata, :token_contract_address_hash, :error])
    |> validate_required([:token_id, :token_contract_address_hash])
    |> foreign_key_constraint(:token_contract_address_hash)
  end
--- a/apps/explorer/lib/explorer/chain/token_transfer.ex
+++ b/apps/explorer/lib/explorer/chain/token_transfer.ex
@ -278,11 +278,13 @@ defmodule Explorer.Chain.TokenTransfer do
  def address_to_unique_tokens(contract_address_hash) do
    from(
      tt in TokenTransfer,
-      where: tt.token_contract_address_hash == ^contract_address_hash,
+      left_join: instance in Instance,
+      on: tt.token_contract_address_hash == instance.token_contract_address_hash and tt.token_id == instance.token_id,
+      where: tt.token_contract_address_hash == ^contract_address_hash and tt.token_id == tt.token_id,
      order_by: [desc: tt.block_number],
      distinct: tt.token_id,
      preload: [:to_address],
-      select: tt
+      select: %{tt | instance: instance}
    )
  end
 end
--- a/apps/explorer/lib/explorer/token/instance_metadata_retriever.ex
+++ b/apps/explorer/lib/explorer/token/instance_metadata_retriever.ex
@ -29,6 +29,8 @@ defmodule Explorer.Token.InstanceMetadataRetriever do

  @cryptokitties_address_hash "0x06012c8cf97bead5deae237070f9587f8e7a266d"

+  @no_uri_error "no uri"
+
  def fetch_metadata(unquote(@cryptokitties_address_hash), token_id) do
    %{"tokenURI" => {:ok, ["https://api.cryptokitties.co/kitties/#{token_id}"]}}
    |> fetch_json()
@ -47,13 +49,42 @@ defmodule Explorer.Token.InstanceMetadataRetriever do
  end

  defp fetch_json(%{"tokenURI" => {:ok, [""]}}) do
-    {:error, :no_uri}
+    {:ok, %{error: @no_uri_error}}
+  end
+
+  defp fetch_json(%{"tokenURI" => {:error, "(-32015) VM execution error."}}) do
+    {:ok, %{error: @no_uri_error}}
+  end
+
+  defp fetch_json(%{"tokenURI" => {:ok, ["http://" <> _ = token_uri]}}) do
+    fetch_metadata(token_uri)
+  end
+
+  defp fetch_json(%{"tokenURI" => {:ok, ["https://" <> _ = token_uri]}}) do
+    fetch_metadata(token_uri)
+  end
+
+  defp fetch_json(%{"tokenURI" => {:ok, [json]}}) do
+    Jason.decode(json)
+  rescue
+    e ->
+      Logger.error(fn -> ["Unknown metadata format #{inspect(json)}. error #{inspect(e)}"] end)
+
+      {:error, json}
  end

-  defp fetch_json(%{"tokenURI" => {:ok, [token_uri]}}) do
+  defp fetch_json(result) do
+    Logger.error(fn -> ["Unknown metadata format #{inspect(result)}."] end)
+
+    {:error, result}
+  end
+
+  defp fetch_metadata(token_uri) do
    case HTTPoison.get(token_uri) do
      {:ok, %Response{body: body, status_code: 200}} ->
-        Jason.decode(body)
+        {:ok, json} = Jason.decode(body)
+
+        {:ok, %{metadata: json}}

      {:ok, %Response{body: body}} ->
        {:error, body}
@ -61,9 +92,10 @@ defmodule Explorer.Token.InstanceMetadataRetriever do
      {:error, %Error{reason: reason}} ->
        {:error, reason}
    end
-  end
+  rescue
+    e ->
+      Logger.error(fn -> ["Could not send request to token uri #{inspect(token_uri)}. error #{inspect(e)}"] end)

-  defp fetch_json(result) do
-    {:error, result}
+      {:error, :request_error}
  end
 end
--- a/apps/explorer/priv/repo/migrations/20191007082500_add_indexes_for_token_instances_query.exs
+++ b/apps/explorer/priv/repo/migrations/20191007082500_add_indexes_for_token_instances_query.exs
@ -0,0 +1,8 @@
+defmodule Explorer.Repo.Migrations.AddIndexesForTokenInstrancesQuery do
+  use Ecto.Migration
+
+  def change do
+    create_if_not_exists(index(:token_instances, [:token_id]))
+    create_if_not_exists(index(:tokens, [:type]))
+  end
+end
--- a/apps/explorer/priv/repo/migrations/20191009121635_add_token_transfer_sorting_indexes.exs
+++ b/apps/explorer/priv/repo/migrations/20191009121635_add_token_transfer_sorting_indexes.exs
@ -0,0 +1,12 @@
+defmodule Explorer.Repo.Migrations.AddTokenTransferSortingIndexes do
+  use Ecto.Migration
+
+  def change do
+    create(
+      index(
+        :token_transfers,
+        ["block_number DESC", "log_index DESC"]
+      )
+    )
+  end
+end
--- a/apps/explorer/priv/repo/migrations/20191010075740_add_error_to_token_instances.exs
+++ b/apps/explorer/priv/repo/migrations/20191010075740_add_error_to_token_instances.exs
@ -0,0 +1,11 @@
+defmodule Explorer.Repo.Migrations.AddErrorToTokenInstances do
+  use Ecto.Migration
+
+  def change do
+    alter table(:token_instances) do
+      add(:error, :string)
+    end
+
+    create(index(:token_instances, [:error]))
+  end
+end
--- a/apps/explorer/test/explorer/chain_test.exs
+++ b/apps/explorer/test/explorer/chain_test.exs
@ -173,6 +173,42 @@ defmodule Explorer.ChainTest do
         valid?: false
       }} = Chain.upsert_token_instance(params)
    end
+
+    test "inserts just an error without metadata" do
+      token = insert(:token)
+      error = "no uri"
+
+      params = %{
+        token_id: 1,
+        token_contract_address_hash: token.contract_address_hash,
+        error: error
+      }
+
+      {:ok, result} = Chain.upsert_token_instance(params)
+
+      assert result.error == error
+    end
+
+    test "nillifies error" do
+      token = insert(:token)
+
+      insert(:token_instance,
+        token_id: 1,
+        token_contract_address_hash: token.contract_address_hash,
+        error: "no uri"
+      )
+
+      params = %{
+        token_id: 1,
+        token_contract_address_hash: token.contract_address_hash,
+        metadata: %{uri: "http://example1.com"}
+      }
+
+      {:ok, result} = Chain.upsert_token_instance(params)
+
+      assert is_nil(result.error)
+      assert result.metadata == params.metadata
+    end
  end

  describe "address_to_logs/2" do
@ -3645,6 +3681,28 @@ defmodule Explorer.ChainTest do
      assert result.contract_address_hash == token_transfer.token_contract_address_hash
    end

+    test "does not fetch token transfers without token id" do
+      token_contract_address = insert(:contract_address)
+      token = insert(:token, contract_address: token_contract_address, type: "ERC-721")
+
+      transaction =
+        :transaction
+        |> insert()
+        |> with_block(insert(:block, number: 1))
+
+      insert(
+        :token_transfer,
+        block_number: 1000,
+        to_address: build(:address),
+        transaction: transaction,
+        token_contract_address: token_contract_address,
+        token: token,
+        token_id: nil
+      )
+
+      assert {:ok, []} = Chain.stream_unfetched_token_instances([], &[&1 | &2])
+    end
+
    test "do not fetch records with token instances" do
      token_contract_address = insert(:contract_address)
      token = insert(:token, contract_address: token_contract_address, type: "ERC-721")
--- a/apps/explorer/test/support/factory.ex
+++ b/apps/explorer/test/support/factory.ex
@ -547,7 +547,8 @@ defmodule Explorer.Factory do
    %Instance{
      token_contract_address_hash: build(:address),
      token_id: 5,
-      metadata: %{key: "value"}
+      metadata: %{key: "value"},
+      error: nil
    }
  end

--- a/apps/indexer/config/config.exs
+++ b/apps/indexer/config/config.exs
@ -28,6 +28,12 @@ block_transformer =
      transformer
  end

+max_skipping_distance =
+  case Integer.parse(System.get_env("MAX_SKIPPING_DISTANCE", "")) do
+    {num, ""} -> num
+    _ -> 5
+  end
+
 config :indexer,
  block_transformer: block_transformer,
  ecto_repos: [Explorer.Repo],
@ -36,7 +42,8 @@ config :indexer,
  # bytes
  memory_limit: 1 <<< 30,
  first_block: System.get_env("FIRST_BLOCK") || "0",
-  last_block: System.get_env("LAST_BLOCK") || ""
+  last_block: System.get_env("LAST_BLOCK") || "",
+  max_skipping_distance: max_skipping_distance

 # config :indexer, Indexer.Fetcher.ReplacedTransaction.Supervisor, disabled?: true
 # config :indexer, Indexer.Fetcher.BlockReward.Supervisor, disabled?: true
--- a/apps/indexer/lib/indexer/block/catchup/fetcher.ex
+++ b/apps/indexer/lib/indexer/block/catchup/fetcher.ex
@ -16,6 +16,7 @@ defmodule Indexer.Block.Catchup.Fetcher do
      async_import_replaced_transactions: 1,
      async_import_tokens: 1,
      async_import_token_balances: 1,
+      async_import_token_instances: 1,
      async_import_uncles: 1,
      fetch_and_import_range: 2
    ]
@ -72,21 +73,12 @@ defmodule Indexer.Block.Catchup.Fetcher do
      ) do
    Logger.metadata(fetcher: :block_catchup)

-    {:ok, latest_block_number} =
-      case latest_block() do
-        nil ->
-          EthereumJSONRPC.fetch_block_number_by_tag("latest", json_rpc_named_arguments)
-
-        number ->
-          {:ok, number}
-      end
-
-    case latest_block_number do
+    case latest_block(json_rpc_named_arguments) do
      # let realtime indexer get the genesis block
      0 ->
        %{first_block_number: 0, missing_block_count: 0, shrunk: false}

-      _ ->
+      latest_block_number ->
        # realtime indexer gets the current latest block
        first = latest_block_number - 1
        last = last_block()
@ -164,6 +156,7 @@ defmodule Indexer.Block.Catchup.Fetcher do
    async_import_token_balances(imported)
    async_import_uncles(imported)
    async_import_replaced_transactions(imported)
+    async_import_token_instances(imported)
  end

  defp stream_fetch_and_import(%__MODULE__{blocks_concurrency: blocks_concurrency} = state, sequence)
@ -345,12 +338,23 @@ defmodule Indexer.Block.Catchup.Fetcher do
    end
  end

-  defp latest_block do
+  defp latest_block(json_rpc_named_arguments) do
    string_value = Application.get_env(:indexer, :last_block)

    case Integer.parse(string_value) do
-      {integer, ""} -> integer
-      _ -> nil
+      {integer, ""} ->
+        integer
+
+      _ ->
+        {:ok, number} = EthereumJSONRPC.fetch_block_number_by_tag("latest", json_rpc_named_arguments)
+        # leave to realtime indexer the blocks in the skipping window
+        skipping_distance = Application.get_env(:indexer, :max_skipping_distance)
+
+        if number > skipping_distance do
+          number - skipping_distance
+        else
+          0
+        end
    end
  end
 end
--- a/apps/indexer/lib/indexer/block/fetcher.ex
+++ b/apps/indexer/lib/indexer/block/fetcher.ex
@ -25,6 +25,7 @@ defmodule Indexer.Block.Fetcher do
    StakingPools,
    Token,
    TokenBalance,
+    TokenInstance,
    UncleBlock
  }

@ -229,6 +230,12 @@ defmodule Indexer.Block.Fetcher do
    callback_module.import(state, options_with_broadcast)
  end

+  def async_import_token_instances(%{token_transfers: token_transfers}) do
+    TokenInstance.async_fetch(token_transfers)
+  end
+
+  def async_import_token_instances(_), do: :ok
+
  def async_import_block_rewards([]), do: :ok

  def async_import_block_rewards(errors) when is_list(errors) do
--- a/apps/indexer/lib/indexer/block/realtime/fetcher.ex
+++ b/apps/indexer/lib/indexer/block/realtime/fetcher.ex
@ -19,6 +19,7 @@ defmodule Indexer.Block.Realtime.Fetcher do
      async_import_replaced_transactions: 1,
      async_import_tokens: 1,
      async_import_token_balances: 1,
+      async_import_token_instances: 1,
      async_import_uncles: 1,
      fetch_and_import_range: 2,
      async_import_staking_pools: 0
@ -87,9 +88,16 @@ defmodule Indexer.Block.Realtime.Fetcher do
    number = quantity_to_integer(quantity)
    # Subscriptions don't support getting all the blocks and transactions data,
    # so we need to go back and get the full block
-    start_fetch_and_import(number, block_fetcher, previous_number, max_number_seen)
+    {new_previous_number, new_max_number} =
+      case start_fetch_and_import(number, block_fetcher, previous_number, max_number_seen) do
+        # The number may have not been inserted if it was part of a small skip
+        :skip ->
+          Logger.debug(["#{inspect(number)} was skipped"])
+          {previous_number, max_number_seen}

-    new_max_number = new_max_number(number, max_number_seen)
+        _ ->
+          {number, new_max_number(number, max_number_seen)}
+      end

    Process.cancel_timer(timer)
    new_timer = schedule_polling()
@ -97,7 +105,7 @@ defmodule Indexer.Block.Realtime.Fetcher do
    {:noreply,
     %{
       state
-       | previous_number: number,
+       | previous_number: new_previous_number,
         max_number_seen: new_max_number,
         timer: new_timer
     }}
@ -115,7 +123,14 @@ defmodule Indexer.Block.Realtime.Fetcher do
    {number, new_max_number} =
      case EthereumJSONRPC.fetch_block_number_by_tag("latest", json_rpc_named_arguments) do
        {:ok, number} when is_nil(max_number_seen) or number > max_number_seen ->
-          start_fetch_and_import(number, block_fetcher, previous_number, number)
+          # in case of polling the realtime fetcher should take care of all the
+          # blocks in the skipping window, because the cathup fetcher wont
+          max_skipping_distance = Application.get_env(:indexer, :max_skipping_distance)
+
+          last_catchup_number = max(0, 10 - max_skipping_distance - 1)
+          starting_number = max(previous_number, last_catchup_number) || last_catchup_number
+
+          start_fetch_and_import(number, block_fetcher, starting_number, nil)

          {max_number_seen, number}

@ -211,27 +226,31 @@ defmodule Indexer.Block.Realtime.Fetcher do
  end

  defp start_fetch_and_import(number, block_fetcher, previous_number, max_number_seen) do
-    start_at = determine_start_at(number, previous_number, max_number_seen)
+    fetching_action = determine_fetching_action(number, previous_number, max_number_seen)

-    for block_number_to_fetch <- start_at..number do
-      args = [block_number_to_fetch, block_fetcher, reorg?(number, max_number_seen)]
-      Task.Supervisor.start_child(TaskSupervisor, __MODULE__, :fetch_and_import_block, args)
+    if fetching_action != :skip do
+      for block_number_to_fetch <- fetching_action do
+        args = [block_number_to_fetch, block_fetcher, reorg?(number, max_number_seen)]
+        Task.Supervisor.start_child(TaskSupervisor, __MODULE__, :fetch_and_import_block, args)
+      end
    end
+
+    fetching_action
  end

-  defp determine_start_at(number, nil, nil), do: number
+  def determine_fetching_action(number, previous_number, max_number_seen) do
+    cond do
+      reorg?(number, max_number_seen) ->
+        [number]

-  defp determine_start_at(number, nil, max_number_seen) do
-    determine_start_at(number, number - 1, max_number_seen)
-  end
+      can_be_skipped?(number, max_number_seen) ->
+        :skip

-  defp determine_start_at(number, previous_number, max_number_seen) do
-    if reorg?(number, max_number_seen) do
-      # set start_at to NOT fill in skipped numbers
-      number
-    else
-      # set start_at to fill in skipped numbers, if any
-      previous_number + 1
+      is_nil(previous_number) ->
+        [number]
+
+      true ->
+        (previous_number + 1)..number
    end
  end

@ -241,6 +260,14 @@ defmodule Indexer.Block.Realtime.Fetcher do

  defp reorg?(_, _), do: false

+  defp can_be_skipped?(number, max_number_seen) when is_integer(max_number_seen) and number > max_number_seen + 1 do
+    max_skipping_distance = Application.get_env(:indexer, :max_skipping_distance)
+
+    max_skipping_distance > 1 and number <= max_number_seen + max_skipping_distance
+  end
+
+  defp can_be_skipped?(_, _), do: false
+
  @reorg_delay 5_000

  @decorate trace(name: "fetch", resource: "Indexer.Block.Realtime.Fetcher.fetch_and_import_block/3", tracer: Tracer)
@ -358,6 +385,7 @@ defmodule Indexer.Block.Realtime.Fetcher do
    async_import_internal_transactions(imported, Keyword.get(json_rpc_named_arguments, :variant))
    async_import_tokens(imported)
    async_import_token_balances(imported)
+    async_import_token_instances(imported)
    async_import_uncles(imported)
    async_import_replaced_transactions(imported)
    async_import_staking_pools()
--- a/apps/indexer/lib/indexer/fetcher/token_instance.ex
+++ b/apps/indexer/lib/indexer/fetcher/token_instance.ex
@ -6,6 +6,8 @@ defmodule Indexer.Fetcher.TokenInstance do
  use Indexer.Fetcher
  use Spandex.Decorators

+  require Logger
+
  alias Explorer.Chain
  alias Explorer.Token.InstanceMetadataRetriever
  alias Indexer.BufferedTask
@ -50,16 +52,35 @@ defmodule Indexer.Fetcher.TokenInstance do
  @impl BufferedTask
  def run([%{contract_address_hash: token_contract_address_hash, token_id: token_id}], _json_rpc_named_arguments) do
    case InstanceMetadataRetriever.fetch_metadata(to_string(token_contract_address_hash), Decimal.to_integer(token_id)) do
-      {:ok, metadata} ->
+      {:ok, %{metadata: metadata}} ->
+        params = %{
+          token_id: token_id,
+          token_contract_address_hash: token_contract_address_hash,
+          metadata: metadata,
+          error: nil
+        }
+
+        {:ok, _result} = Chain.upsert_token_instance(params)
+
+      {:ok, %{error: error}} ->
        params = %{
          token_id: token_id,
          token_contract_address_hash: token_contract_address_hash,
-          metadata: metadata
+          error: error
        }

        {:ok, _result} = Chain.upsert_token_instance(params)

-      _other ->
+      result ->
+        Logger.error(fn ->
+          [
+            "failed to fetch token instance metadata for #{
+              inspect({to_string(token_contract_address_hash), Decimal.to_integer(token_id)})
+            }: ",
+            inspect(result)
+          ]
+        end)
+
        :ok
    end

@ -69,6 +90,18 @@ defmodule Indexer.Fetcher.TokenInstance do
  @doc """
  Fetches token instance data asynchronously.
  """
+  def async_fetch(token_transfers) when is_list(token_transfers) do
+    data =
+      token_transfers
+      |> Enum.reject(fn token_transfer -> is_nil(token_transfer.token_id) end)
+      |> Enum.map(fn token_transfer ->
+        %{contract_address_hash: token_transfer.token_contract_address_hash, token_id: token_transfer.token_id}
+      end)
+      |> Enum.uniq()
+
+    BufferedTask.buffer(__MODULE__, data)
+  end
+
  def async_fetch(data) do
    BufferedTask.buffer(__MODULE__, data)
  end
--- a/apps/indexer/test/indexer/block/catchup/bound_interval_supervisor_test.exs
+++ b/apps/indexer/test/indexer/block/catchup/bound_interval_supervisor_test.exs
@ -28,6 +28,11 @@ defmodule Indexer.Block.Catchup.BoundIntervalSupervisorTest do

  setup :verify_on_exit!

+  # run the tests without the skipping window
+  setup do
+    Application.put_env(:indexer, :max_skipping_distance, 0)
+  end
+
  describe "start_link/1" do
    # See https://github.com/poanetwork/blockscout/issues/597
    @tag :no_geth
--- a/apps/indexer/test/indexer/block/catchup/fetcher_test.exs
+++ b/apps/indexer/test/indexer/block/catchup/fetcher_test.exs
@ -32,6 +32,11 @@ defmodule Indexer.Block.Catchup.FetcherTest do
    }
  end

+  setup do
+    # run the tests without the skipping window
+    Application.put_env(:indexer, :max_skipping_distance, 0)
+  end
+
  describe "import/1" do
    test "fetches uncles asynchronously", %{json_rpc_named_arguments: json_rpc_named_arguments} do
      CoinBalance.Supervisor.Case.start_supervised!(json_rpc_named_arguments: json_rpc_named_arguments)
--- a/apps/indexer/test/indexer/block/realtime/fetcher_test.exs
+++ b/apps/indexer/test/indexer/block/realtime/fetcher_test.exs
@ -40,6 +40,11 @@ defmodule Indexer.Block.Realtime.FetcherTest do
    %{block_fetcher: block_fetcher, json_rpc_named_arguments: core_json_rpc_named_arguments}
  end

+  setup do
+    # run the tests with a realistic skipping window
+    Application.put_env(:indexer, :max_skipping_distance, 3)
+  end
+
  describe "Indexer.Block.Fetcher.fetch_and_import_range/1" do
    @tag :no_geth
    test "in range with internal transactions", %{
@ -424,4 +429,51 @@ defmodule Indexer.Block.Realtime.FetcherTest do
              }} = Indexer.Block.Fetcher.fetch_and_import_range(block_fetcher, 3_946_079..3_946_080)
    end
  end
+
+  describe "determine_fetching_action/4" do
+    test "when everything (except number) is nil results in fetching only the number" do
+      assert [14] == Realtime.Fetcher.determine_fetching_action(14, nil, nil)
+    end
+
+    test "when number is also max_number_seen results in fetching only the number" do
+      number = 23
+      assert [number] == Realtime.Fetcher.determine_fetching_action(number, nil, number)
+      assert [number] == Realtime.Fetcher.determine_fetching_action(number, 21, number)
+    end
+
+    test "when max_number_seen is nil, fetching will start from previous_number" do
+      # note: this is a way to force this behavior, used by `poll_latest_block_number`
+      number = 156
+      previous_number = 150
+      old_number = 94
+
+      assert (previous_number + 1)..number == Realtime.Fetcher.determine_fetching_action(number, previous_number, nil)
+      assert (old_number + 1)..number == Realtime.Fetcher.determine_fetching_action(number, old_number, nil)
+    end
+
+    test "when number immediately follows the previous_number it is fetched" do
+      max_number_seen = 26
+      number = 27
+
+      assert [number] == Realtime.Fetcher.determine_fetching_action(number, nil, max_number_seen)
+    end
+
+    test "when number is inside the allowed skipping window nothing is fetched" do
+      max_number_seen = 26
+
+      assert :skip == Realtime.Fetcher.determine_fetching_action(28, nil, max_number_seen)
+      assert :skip == Realtime.Fetcher.determine_fetching_action(29, nil, max_number_seen)
+    end
+
+    test "when number is over the allowed skipping window all the values since the previous_number will be fetched" do
+      max_number_seen = 390
+      previous_number = 381
+      max_skipping_distance = Application.get_env(:indexer, :max_skipping_distance)
+
+      number = max_number_seen + max_skipping_distance + 1
+
+      assert (previous_number + 1)..number ==
+               Realtime.Fetcher.determine_fetching_action(number, previous_number, max_number_seen)
+    end
+  end
 end
--- a/docs/env-variables.md
+++ b/docs/env-variables.md
@ -71,3 +71,4 @@ $ export NETWORK=POA
 | `REWARDS_CONTRACT_ADDRESS` | | Emission rewards contract address. This env var is used only if `EMISSION_FORMAT` is set to `POA` | `0xeca443e8e1ab29971a45a9c57a6a9875701698a5` | v2.0.4+ | | |
 | `INTERNAL_TRANSACTIONOS_FOR_TOKEN_TRANSFERS` | | Does not applicable for parity because we fetch all transactions for it. If set to true fetches internal transactions for simple token transfers transactions. It's disabled by default to increase internal transactions indexing speed | `false` | master | | |
 | `BLOCKSCOUT_PROTOCOL` | | Url scheme for blockscout | in prod env `https` is used, in dev env `http` is used | master | | |
+| `MAX_SKIPPING_DISTANCE` | | The maximum distance the indexer is allowed to wait for when notified of a number not following the lask known one. | 4 | master | |
--- a/mix.lock
+++ b/mix.lock
@ -11,7 +11,7 @@
  "briefly": {:git, "https://github.com/CargoSense/briefly.git", "2526e9674a4e6996137e066a1295ea60962712b8", []},
  "bunt": {:hex, :bunt, "0.2.0", "951c6e801e8b1d2cbe58ebbd3e616a869061ddadcc4863d0a2182541acae9a38", [:mix], [], "hexpm"},
  "bypass": {:hex, :bypass, "1.0.0", "b78b3dcb832a71aca5259c1a704b2e14b55fd4e1327ff942598b4e7d1a7ad83d", [:mix], [{:plug, "~> 1.7", [hex: :plug, repo: "hexpm", optional: false]}, {:plug_cowboy, "~> 1.0 or ~> 2.0", [hex: :plug_cowboy, repo: "hexpm", optional: false]}], "hexpm"},
-  "certifi": {:hex, :certifi, "2.3.1", "d0f424232390bf47d82da8478022301c561cf6445b5b5fb6a84d49a9e76d2639", [:rebar3], [{:parse_trans, "3.2.0", [hex: :parse_trans, repo: "hexpm", optional: false]}], "hexpm"},
+  "certifi": {:hex, :certifi, "2.5.1", "867ce347f7c7d78563450a18a6a28a8090331e77fa02380b4a21962a65d36ee5", [:rebar3], [{:parse_trans, "~>3.3", [hex: :parse_trans, repo: "hexpm", optional: false]}], "hexpm"},
  "cldr_utils": {:hex, :cldr_utils, "2.3.0", "e7e8b5ad7494a929c1b620cc489c3aa3f6e7e5299584c1a934bbdb56d1a53c70", [:mix], [{:decimal, "~> 1.5", [hex: :decimal, repo: "hexpm", optional: false]}], "hexpm"},
  "combine": {:hex, :combine, "0.10.0", "eff8224eeb56498a2af13011d142c5e7997a80c8f5b97c499f84c841032e429f", [:mix], [], "hexpm"},
  "comeonin": {:hex, :comeonin, "4.1.2", "3eb5620fd8e35508991664b4c2b04dd41e52f1620b36957be837c1d7784b7592", [:mix], [{:argon2_elixir, "~> 1.2", [hex: :argon2_elixir, repo: "hexpm", optional: true]}, {:bcrypt_elixir, "~> 0.12.1 or ~> 1.0", [hex: :bcrypt_elixir, repo: "hexpm", optional: true]}, {:pbkdf2_elixir, "~> 0.12", [hex: :pbkdf2_elixir, repo: "hexpm", optional: true]}], "hexpm"},
@ -53,10 +53,10 @@
  "flow": {:hex, :flow, "0.14.3", "0d92991fe53035894d24aa8dec10dcfccf0ae00c4ed436ace3efa9813a646902", [:mix], [{:gen_stage, "~> 0.14.0", [hex: :gen_stage, repo: "hexpm", optional: false]}], "hexpm"},
  "gen_stage": {:hex, :gen_stage, "0.14.2", "6a2a578a510c5bfca8a45e6b27552f613b41cf584b58210f017088d3d17d0b14", [:mix], [], "hexpm"},
  "gettext": {:hex, :gettext, "0.16.1", "e2130b25eebcbe02bb343b119a07ae2c7e28bd4b146c4a154da2ffb2b3507af2", [:mix], [], "hexpm"},
-  "hackney": {:hex, :hackney, "1.13.0", "24edc8cd2b28e1c652593833862435c80661834f6c9344e84b6a2255e7aeef03", [:rebar3], [{:certifi, "2.3.1", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "5.1.2", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "1.0.1", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "1.0.2", [hex: :mimerl, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "1.1.1", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}], "hexpm"},
+  "hackney": {:hex, :hackney, "1.15.2", "07e33c794f8f8964ee86cebec1a8ed88db5070e52e904b8f12209773c1036085", [:rebar3], [{:certifi, "2.5.1", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "6.0.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "1.0.1", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~>1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "1.1.5", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}], "hexpm"},
  "html_entities": {:hex, :html_entities, "0.4.0", "f2fee876858cf6aaa9db608820a3209e45a087c5177332799592142b50e89a6b", [:mix], [], "hexpm"},
  "httpoison": {:hex, :httpoison, "1.0.0", "1f02f827148d945d40b24f0b0a89afe40bfe037171a6cf70f2486976d86921cd", [:mix], [{:hackney, "~> 1.8", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm"},
-  "idna": {:hex, :idna, "5.1.2", "e21cb58a09f0228a9e0b95eaa1217f1bcfc31a1aaa6e1fdf2f53a33f7dbd9494", [:rebar3], [{:unicode_util_compat, "0.3.1", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm"},
+  "idna": {:hex, :idna, "6.0.0", "689c46cbcdf3524c44d5f3dde8001f364cd7608a99556d8fbd8239a5798d4c10", [:rebar3], [{:unicode_util_compat, "0.4.1", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm"},
  "jason": {:hex, :jason, "1.1.2", "b03dedea67a99223a2eaf9f1264ce37154564de899fd3d8b9a21b1a6fd64afe7", [:mix], [{:decimal, "~> 1.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm"},
  "jsx": {:hex, :jsx, "2.8.3", "a05252d381885240744d955fbe3cf810504eb2567164824e19303ea59eef62cf", [:mix, :rebar3], [], "hexpm"},
  "junit_formatter": {:hex, :junit_formatter, "3.0.1", "4ed76a50886717a6d683a978cec775abdcb88d9d51cfddd3d8fbf8e6af4625da", [:mix], [], "hexpm"},
@ -70,7 +70,7 @@
  "memento": {:hex, :memento, "0.3.1", "b2909390820550d8b90b68ec96f9e15ff8a45a28b6f97fa4a62ef50e87c2f9d9", [:mix], [], "hexpm"},
  "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], [], "hexpm"},
  "mime": {:hex, :mime, "1.3.1", "30ce04ab3175b6ad0bdce0035cba77bba68b813d523d1aac73d9781b4d193cf8", [:mix], [], "hexpm"},
-  "mimerl": {:hex, :mimerl, "1.0.2", "993f9b0e084083405ed8252b99460c4f0563e41729ab42d9074fd5e52439be88", [:rebar3], [], "hexpm"},
+  "mimerl": {:hex, :mimerl, "1.2.0", "67e2d3f571088d5cfd3e550c383094b47159f3eee8ffa08e64106cdf5e981be3", [:rebar3], [], "hexpm"},
  "mix_erlang_tasks": {:hex, :mix_erlang_tasks, "0.1.0", "36819fec60b80689eb1380938675af215565a89320a9e29c72c70d97512e4649", [:mix], [], "hexpm"},
  "mochiweb": {:hex, :mochiweb, "2.18.0", "eb55f1db3e6e960fac4e6db4e2db9ec3602cc9f30b86cd1481d56545c3145d2e", [:rebar3], [], "hexpm"},
  "mock": {:hex, :mock, "0.3.3", "42a433794b1291a9cf1525c6d26b38e039e0d3a360732b5e467bfc77ef26c914", [:mix], [{:meck, "~> 0.8.13", [hex: :meck, repo: "hexpm", optional: false]}], "hexpm"},
@ -80,7 +80,7 @@
  "nimble_parsec": {:hex, :nimble_parsec, "0.5.1", "c90796ecee0289dbb5ad16d3ad06f957b0cd1199769641c961cfe0b97db190e0", [:mix], [], "hexpm"},
  "optimal": {:hex, :optimal, "0.3.6", "46bbf52fbbbd238cda81e02560caa84f93a53c75620f1fe19e81e4ae7b07d1dd", [:mix], [], "hexpm"},
  "parallel_stream": {:hex, :parallel_stream, "1.0.6", "b967be2b23f0f6787fab7ed681b4c45a215a81481fb62b01a5b750fa8f30f76c", [:mix], [], "hexpm"},
-  "parse_trans": {:hex, :parse_trans, "3.2.0", "2adfa4daf80c14dc36f522cf190eb5c4ee3e28008fc6394397c16f62a26258c2", [:rebar3], [], "hexpm"},
+  "parse_trans": {:hex, :parse_trans, "3.3.0", "09765507a3c7590a784615cfd421d101aec25098d50b89d7aa1d66646bc571c1", [:rebar3], [], "hexpm"},
  "phoenix": {:hex, :phoenix, "1.4.0", "56fe9a809e0e735f3e3b9b31c1b749d4b436e466d8da627b8d82f90eaae714d2", [:mix], [{:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:phoenix_pubsub, "~> 1.1", [hex: :phoenix_pubsub, repo: "hexpm", optional: false]}, {:plug, "~> 1.7", [hex: :plug, repo: "hexpm", optional: false]}, {:plug_cowboy, "~> 1.0 or ~> 2.0", [hex: :plug_cowboy, repo: "hexpm", optional: true]}], "hexpm"},
  "phoenix_ecto": {:hex, :phoenix_ecto, "4.0.0", "c43117a136e7399ea04ecaac73f8f23ee0ffe3e07acfcb8062fe5f4c9f0f6531", [:mix], [{:ecto, "~> 3.0", [hex: :ecto, repo: "hexpm", optional: false]}, {:phoenix_html, "~> 2.9", [hex: :phoenix_html, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm"},
  "phoenix_form_awesomplete": {:hex, :phoenix_form_awesomplete, "0.1.5", "d09aade160b584e3428e1e095645482396f17bddda4f566f1118f12d2598d11c", [:mix], [{:phoenix_html, "~> 2.10", [hex: :phoenix_html, repo: "hexpm", optional: false]}], "hexpm"},
@ -107,11 +107,11 @@
  "spandex_datadog": {:hex, :spandex_datadog, "0.4.0", "75113a73e843123074886a2e31994af07d6e0632749a8d97e9ca6157b120c287", [:mix], [{:msgpax, "~> 2.2.1", [hex: :msgpax, repo: "hexpm", optional: false]}, {:spandex, "~> 2.3", [hex: :spandex, repo: "hexpm", optional: false]}], "hexpm"},
  "spandex_ecto": {:hex, :spandex_ecto, "0.4.0", "deaeaddc11a35f1c551206c53d09bb93a0da5808dbef751430e465c8c7de01d3", [:mix], [{:spandex, "~> 2.2", [hex: :spandex, repo: "hexpm", optional: false]}], "hexpm"},
  "spandex_phoenix": {:hex, :spandex_phoenix, "0.3.2", "e81889d80852a895cf62ce2e25181b15766d21e8647962e0a4458414b935feb3", [:mix], [{:plug, "~> 1.3", [hex: :plug, repo: "hexpm", optional: false]}, {:spandex, "~> 2.2", [hex: :spandex, repo: "hexpm", optional: false]}], "hexpm"},
-  "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.1", "28a4d65b7f59893bc2c7de786dec1e1555bd742d336043fe644ae956c3497fbe", [:make, :rebar], [], "hexpm"},
+  "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.5", "6eaf7ad16cb568bb01753dbbd7a95ff8b91c7979482b95f38443fe2c8852a79b", [:make, :mix, :rebar3], [], "hexpm"},
  "telemetry": {:hex, :telemetry, "0.4.0", "8339bee3fa8b91cb84d14c2935f8ecf399ccd87301ad6da6b71c09553834b2ab", [:rebar3], [], "hexpm"},
  "timex": {:hex, :timex, "3.6.1", "efdf56d0e67a6b956cc57774353b0329c8ab7726766a11547e529357ffdc1d56", [:mix], [{:combine, "~> 0.10", [hex: :combine, repo: "hexpm", optional: false]}, {:gettext, "~> 0.10", [hex: :gettext, repo: "hexpm", optional: false]}, {:tzdata, "~> 0.1.8 or ~> 0.5 or ~> 1.0.0", [hex: :tzdata, repo: "hexpm", optional: false]}], "hexpm"},
  "tzdata": {:hex, :tzdata, "1.0.1", "f6027a331af7d837471248e62733c6ebee86a72e57c613aa071ebb1f750fc71a", [:mix], [{:hackney, "~> 1.0", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm"},
-  "unicode_util_compat": {:hex, :unicode_util_compat, "0.3.1", "a1f612a7b512638634a603c8f401892afbf99b8ce93a45041f8aaca99cadb85e", [:rebar3], [], "hexpm"},
+  "unicode_util_compat": {:hex, :unicode_util_compat, "0.4.1", "d869e4c68901dd9531385bb0c8c40444ebf624e60b6962d95952775cac5e90cd", [:rebar3], [], "hexpm"},
  "wallaby": {:hex, :wallaby, "0.22.0", "e5d16bfa7ab23562c8a6e3b0a31445a2fd470ca622082a910114807ba823780d", [:mix], [{:httpoison, "~> 0.12 or ~> 1.0", [hex: :httpoison, repo: "hexpm", optional: false]}, {:poison, ">= 1.4.0", [hex: :poison, repo: "hexpm", optional: false]}, {:poolboy, "~> 1.5", [hex: :poolboy, repo: "hexpm", optional: false]}], "hexpm"},
  "websocket_client": {:hex, :websocket_client, "1.3.0", "2275d7daaa1cdacebf2068891c9844b15f4fdc3de3ec2602420c2fb486db59b6", [:rebar3], [], "hexpm"},
  "wobserver": {:git, "https://github.com/poanetwork/wobserver.git", "13bcda30a87f4f0be1878920a79433ad831eefbe", [branch: "support-https"]},