Allow to load web3signer key from deposit data (#408)

Signed-off-by: cyc60 <avsysoev60@gmail.com>

src/config/settings.py

@@ -50,6 +50,7 @@ class Settings(metaclass=Singleton):
     keystores_password_file: Path
     remote_signer_url: str | None
     remote_signer_public_keys_url: str | None
+    remote_signer_use_deposit_data: bool
     dappnode: bool = False
     hashi_vault_key_paths: list[str] | None
     hashi_vault_url: str | None
@@ -167,6 +168,9 @@ def set(
         self.remote_signer_public_keys_url: str = decouple_config(
             'REMOTE_SIGNER_PUBLIC_KEYS_URL', default=None
         )
+        self.remote_signer_use_deposit_data: bool = decouple_config(
+            'REMOTE_SIGNER_USE_DEPOSIT_DATA', default=False, cast=bool
+        )
         self.dappnode = dappnode
 
         # hashi vault configuration

src/validators/keystores/remote.py

@@ -13,6 +13,7 @@
 
 from src.config.settings import REMOTE_SIGNER_TIMEOUT, settings
 from src.validators.keystores.base import BaseKeystore
+from src.validators.utils import load_deposit_data
 
 logger = logging.getLogger(__name__)
 
@@ -50,6 +51,10 @@ def __init__(self, public_keys: list[HexStr]):
 
     @staticmethod
     async def load() -> 'BaseKeystore':
+        if settings.remote_signer_use_deposit_data:
+            deposit_data = load_deposit_data(settings.vault, settings.deposit_data_file)
+            return RemoteSignerKeystore(deposit_data.public_keys)
+
         public_keys = await RemoteSignerKeystore._get_remote_signer_public_keys()
         return RemoteSignerKeystore(public_keys)