IPFS gateway URL env var

CHANGELOG.md

@@ -22,6 +22,7 @@
 
 ### Chore
 
+- [#8579](https://github.com/blockscout/blockscout/pull/8579) - IPFS gateway URL runtime env variable
 - [#8573](https://github.com/blockscout/blockscout/pull/8573) - Update Nginx to proxy all frontend paths
 - [#8290](https://github.com/blockscout/blockscout/pull/8290) - Update Chromedriver version
 - [#8536](https://github.com/blockscout/blockscout/pull/8536), [#8537](https://github.com/blockscout/blockscout/pull/8537), [#8540](https://github.com/blockscout/blockscout/pull/8540), [#8557](https://github.com/blockscout/blockscout/pull/8557) - New issue template

apps/block_scout_web/lib/block_scout_web/views/nft_helper.ex

@@ -81,6 +81,12 @@ defmodule BlockScoutWeb.NFTHelper do
 
   defp ipfs_link(image_url, prefix) do
     ipfs_uid = String.slice(image_url, String.length(prefix)..-1)
-    "https://ipfs.io/ipfs/" <> ipfs_uid
+
+    ipfs_gateway_url =
+      :indexer
+      |> Application.get_env(:ipfs_gateway_url)
+      |> String.trim_trailing("/")
+
+    ipfs_gateway_url <> "/" <> ipfs_uid
   end
 end

apps/indexer/lib/indexer/fetcher/token_instance/metadata_retriever.ex

@@ -11,7 +11,6 @@ defmodule Indexer.Fetcher.TokenInstance.MetadataRetriever do
   @no_uri_error "no uri"
   @vm_execution_error "VM execution error"
   @ipfs_protocol "ipfs://"
-  @ipfs_link "https://ipfs.io/ipfs/"
 
   # https://eips.ethereum.org/EIPS/eip-1155#metadata
   @erc1155_token_id_placeholder "{id}"
@@ -20,6 +19,15 @@ defmodule Indexer.Fetcher.TokenInstance.MetadataRetriever do
 
   @ignored_hosts ["localhost", "127.0.0.1", "0.0.0.0", "", nil]
 
+  defp ipfs_link do
+    link =
+      :indexer
+      |> Application.get_env(:ipfs_gateway_url)
+      |> String.trim_trailing("/")
+
+    link <> "/"
+  end
+
   def query_contract(contract_address_hash, contract_functions, abi) do
     Reader.query_contract(contract_address_hash, abi, contract_functions, false)
   end
@@ -54,7 +62,7 @@ defmodule Indexer.Fetcher.TokenInstance.MetadataRetriever do
   # CIDv0 IPFS links # https://docs.ipfs.tech/concepts/content-addressing/#version-0-v0
   defp fetch_json_from_uri({:ok, ["Qm" <> _ = result]}, hex_token_id) do
     if String.length(result) == 46 do
-      fetch_json_from_uri({:ok, [@ipfs_link <> result]}, hex_token_id)
+      fetch_json_from_uri({:ok, [ipfs_link() <> result]}, hex_token_id)
     else
       Logger.debug(["Unknown metadata format result #{inspect(result)}."], fetcher: :token_instances)
 
@@ -141,7 +149,7 @@ defmodule Indexer.Fetcher.TokenInstance.MetadataRetriever do
   end
 
   defp fetch_from_ipfs(ipfs_uid, hex_token_id) do
-    ipfs_url = @ipfs_link <> ipfs_uid
+    ipfs_url = ipfs_link() <> ipfs_uid
     fetch_metadata_inner(ipfs_url, hex_token_id)
   end
 

config/runtime.exs

@@ -437,7 +437,8 @@ config :indexer,
   token_balances_fetcher_init_limit:
     ConfigHelper.parse_integer_env_var("INDEXER_TOKEN_BALANCES_FETCHER_INIT_QUERY_LIMIT", 100_000),
   coin_balances_fetcher_init_limit:
-    ConfigHelper.parse_integer_env_var("INDEXER_COIN_BALANCES_FETCHER_INIT_QUERY_LIMIT", 2000)
+    ConfigHelper.parse_integer_env_var("INDEXER_COIN_BALANCES_FETCHER_INIT_QUERY_LIMIT", 2000),
+  ipfs_gateway_url: System.get_env("IPFS_GATEWAY_URL", "https://ipfs.io/ipfs")
 
 config :indexer, Indexer.Supervisor, enabled: !ConfigHelper.parse_bool_env_var("DISABLE_INDEXER")
 

docker-compose/envs/common-blockscout.env

@@ -232,7 +232,8 @@ EIP_1559_ELASTICITY_MULTIPLIER=2
 # INDEXER_TOKEN_INSTANCE_RETRY_BATCH_SIZE=10
 # INDEXER_TOKEN_INSTANCE_REALTIME_BATCH_SIZE=1
 # INDEXER_TOKEN_INSTANCE_SANITIZE_BATCH_SIZE=10
-API_V2_ENABLED=true
 # INDEXER_TOKEN_INSTANCE_LEGACY_SANITIZE_BATCH_SIZE=10
 # TOKEN_INSTANCE_OWNER_MIGRATION_CONCURRENCY=5
 # TOKEN_INSTANCE_OWNER_MIGRATION_BATCH_SIZE=50
+# IPFS_GATEWAY_URL=
+API_V2_ENABLED=true