Manage concurrency for Token and TokenBalance fetchers

CHANGELOG.md

@@ -22,6 +22,7 @@
 
 ### Chore
 
+- [#8167](https://github.com/blockscout/blockscout/pull/8167) - Manage concurrency for Token and TokenBalance fetcher
 - [#8146](https://github.com/blockscout/blockscout/pull/8146) - Add method_id to write methods in API v2 response
 - [#8105](https://github.com/blockscout/blockscout/pull/8105) - Extend API v1 with endpoints used by new UI
 - [#8104](https://github.com/blockscout/blockscout/pull/8104) - remove "TODO" from API v2 response

apps/indexer/lib/indexer/fetcher/token.ex

@@ -14,12 +14,7 @@ defmodule Indexer.Fetcher.Token do
 
   @behaviour BufferedTask
 
-  @defaults [
-    flush_interval: 300,
-    max_batch_size: 1,
-    max_concurrency: 10,
-    task_supervisor: Indexer.Fetcher.Token.TaskSupervisor
-  ]
+  @default_max_concurrency 10
 
   @doc false
   def child_spec([init_options, gen_server_options]) do
@@ -32,7 +27,7 @@ defmodule Indexer.Fetcher.Token do
     end
 
     merged_init_opts =
-      @defaults
+      defaults()
       |> Keyword.merge(mergeable_init_options)
       |> Keyword.put(:state, state)
 
@@ -81,4 +76,13 @@ defmodule Indexer.Fetcher.Token do
     {:ok, _} = Chain.update_token(token, token_params)
     :ok
   end
+
+  defp defaults do
+    [
+      flush_interval: 300,
+      max_batch_size: 1,
+      max_concurrency: Application.get_env(:indexer, __MODULE__)[:concurrency] || @default_max_concurrency,
+      task_supervisor: Indexer.Fetcher.Token.TaskSupervisor
+    ]
+  end
 end

apps/indexer/lib/indexer/fetcher/token_balance.ex

@@ -26,6 +26,7 @@ defmodule Indexer.Fetcher.TokenBalance do
   @behaviour BufferedTask
 
   @default_max_batch_size 100
+  @default_max_concurrency 10
 
   @max_retries 3
 
@@ -234,7 +235,7 @@ defmodule Indexer.Fetcher.TokenBalance do
     [
       flush_interval: 300,
       max_batch_size: Application.get_env(:indexer, __MODULE__)[:batch_size] || @default_max_batch_size,
-      max_concurrency: 10,
+      max_concurrency: Application.get_env(:indexer, __MODULE__)[:concurrency] || @default_max_concurrency,
       task_supervisor: Indexer.Fetcher.TokenBalance.TaskSupervisor
     ]
   end

config/runtime.exs

@@ -444,8 +444,11 @@ config :indexer, Indexer.Fetcher.PendingTransaction.Supervisor,
     System.get_env("ETHEREUM_JSONRPC_VARIANT") == "besu" ||
       ConfigHelper.parse_bool_env_var("INDEXER_DISABLE_PENDING_TRANSACTIONS_FETCHER")
 
+config :indexer, Indexer.Fetcher.Token, concurrency: ConfigHelper.parse_integer_env_var("INDEXER_TOKEN_CONCURRENCY", 10)
+
 config :indexer, Indexer.Fetcher.TokenBalance,
-  batch_size: ConfigHelper.parse_integer_env_var("INDEXER_TOKEN_BALANCES_BATCH_SIZE", 100)
+  batch_size: ConfigHelper.parse_integer_env_var("INDEXER_TOKEN_BALANCES_BATCH_SIZE", 100),
+  concurrency: ConfigHelper.parse_integer_env_var("INDEXER_TOKEN_BALANCES_CONCURRENCY", 10)
 
 config :indexer, Indexer.Fetcher.TokenBalanceOnDemand,
   threshold: ConfigHelper.parse_time_env_var("TOKEN_BALANCE_ON_DEMAND_FETCHER_THRESHOLD", "1h"),

docker-compose/envs/common-blockscout.env

@@ -114,7 +114,9 @@ INDEXER_DISABLE_INTERNAL_TRANSACTIONS_FETCHER=false
 # INDEXER_COIN_BALANCES_CONCURRENCY=
 # INDEXER_RECEIPTS_BATCH_SIZE=
 # INDEXER_RECEIPTS_CONCURRENCY=
+# INDEXER_TOKEN_CONCURRENCY=
 # INDEXER_TOKEN_BALANCES_BATCH_SIZE=
+# INDEXER_TOKEN_BALANCES_CONCURRENCY=
 # INDEXER_TX_ACTIONS_ENABLE=
 # INDEXER_TX_ACTIONS_MAX_TOKEN_CACHE_SIZE=
 # INDEXER_TX_ACTIONS_REINDEX_FIRST_BLOCK=

docker/Makefile

@@ -561,9 +561,15 @@ endif
 ifdef INDEXER_EMPTY_BLOCKS_SANITIZER_BATCH_SIZE
     BLOCKSCOUT_CONTAINER_PARAMS += -e 'INDEXER_EMPTY_BLOCKS_SANITIZER_BATCH_SIZE=$(INDEXER_EMPTY_BLOCKS_SANITIZER_BATCH_SIZE)'
 endif
+ifdef INDEXER_TOKEN_CONCURRENCY
+    BLOCKSCOUT_CONTAINER_PARAMS += -e 'INDEXER_TOKEN_CONCURRENCY=$(INDEXER_TOKEN_CONCURRENCY)'
+endif
 ifdef INDEXER_TOKEN_BALANCES_BATCH_SIZE
     BLOCKSCOUT_CONTAINER_PARAMS += -e 'INDEXER_TOKEN_BALANCES_BATCH_SIZE=$(INDEXER_TOKEN_BALANCES_BATCH_SIZE)'
 endif
+ifdef INDEXER_TOKEN_BALANCES_CONCURRENCY
+    BLOCKSCOUT_CONTAINER_PARAMS += -e 'INDEXER_TOKEN_BALANCES_CONCURRENCY=$(INDEXER_TOKEN_BALANCES_CONCURRENCY)'
+endif
 ifdef INDEXER_REALTIME_FETCHER_MAX_GAP
     BLOCKSCOUT_CONTAINER_PARAMS += -e 'INDEXER_REALTIME_FETCHER_MAX_GAP=$(INDEXER_REALTIME_FETCHER_MAX_GAP)'
 endif