refactor: move hathor settings to yaml configuration files [part 1/2]

Makefile

@@ -42,8 +42,8 @@ tests-quick:
 
 .PHONY: tests-genesis
 tests-genesis:
-	HATHOR_TEST_CONFIG_FILE=hathor.conf.mainnet pytest tests/tx/test_genesis.py
-	HATHOR_TEST_CONFIG_FILE=hathor.conf.testnet pytest tests/tx/test_genesis.py
+	HATHOR_TEST_CONFIG_YAML='./hathor/conf/mainnet.yml' pytest tests/tx/test_genesis.py
+	HATHOR_TEST_CONFIG_YAML='./hathor/conf/testnet.yml' pytest tests/tx/test_genesis.py
 
 .PHONY: tests-ci
 tests-ci:

hathor/builder/cli_builder.py

@@ -52,7 +52,7 @@ def check_or_raise(self, condition: bool, message: str) -> None:
     def create_manager(self, reactor: PosixReactorBase, args: Namespace) -> HathorManager:
         import hathor
         from hathor.conf import HathorSettings
-        from hathor.conf.get_settings import get_settings_module
+        from hathor.conf.get_settings import get_settings_filepath, get_settings_module
         from hathor.daa import TestMode, _set_test_mode
         from hathor.event.storage import EventMemoryStorage, EventRocksDBStorage, EventStorage
         from hathor.event.websocket.factory import EventWebsocketFactory
@@ -69,7 +69,11 @@ def create_manager(self, reactor: PosixReactorBase, args: Namespace) -> HathorMa
         from hathor.util import get_environment_info
 
         settings = HathorSettings()
-        settings_module = get_settings_module()  # only used for logging its location
+
+        # only used for logging its location
+        settings_module = get_settings_module()
+        settings_source = settings_module.__file__ if settings_module is not None else get_settings_filepath()
+
         self.log = logger.new()
         self.reactor = reactor
 
@@ -85,7 +89,7 @@ def create_manager(self, reactor: PosixReactorBase, args: Namespace) -> HathorMa
             my_peer_id=str(peer_id.id),
             python=python,
             platform=platform.platform(),
-            settings=settings_module.__file__,
+            settings=settings_source,
         )
 
         tx_storage: TransactionStorage

hathor/cli/run_node.py

@@ -19,6 +19,8 @@
 
 from structlog import get_logger
 
+from hathor.conf import TESTNET_SETTINGS_FILEPATH
+
 logger = get_logger()
 # LOGGING_CAPTURE_STDOUT = True
 
@@ -102,6 +104,7 @@ def create_parser(cls) -> ArgumentParser:
         parser.add_argument('--x-enable-event-queue', action='store_true', help='Enable event queue mechanism')
         parser.add_argument('--peer-id-blacklist', action='extend', default=[], nargs='+', type=str,
                             help='Peer IDs to forbid connection')
+        parser.add_argument('--config-yaml', type=str, help='Configuration yaml filepath')
         return parser
 
     def prepare(self, args: Namespace, *, register_resources: bool = True) -> None:
@@ -309,9 +312,12 @@ def __init__(self, *, argv=None):
             argv = sys.argv[1:]
         self.parser = self.create_parser()
         args = self.parse_args(argv)
-        if args.testnet:
-            if not os.environ.get('HATHOR_CONFIG_FILE'):
-                os.environ['HATHOR_CONFIG_FILE'] = 'hathor.conf.testnet'
+
+        if args.config_yaml:
+            os.environ['HATHOR_CONFIG_YAML'] = args.config_yaml
+        elif args.testnet:
+            os.environ['HATHOR_CONFIG_YAML'] = TESTNET_SETTINGS_FILEPATH
+
         self.prepare(args)
         self.register_signal_handlers(args)
         if args.sysctl:

hathor/conf/__init__.py

@@ -12,8 +12,19 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from pathlib import Path
+
 from hathor.conf.get_settings import HathorSettings
 
+parent_dir = Path(__file__).parent
+
+MAINNET_SETTINGS_FILEPATH = str(parent_dir / 'mainnet.yml')
+TESTNET_SETTINGS_FILEPATH = str(parent_dir / 'testnet.yml')
+UNITTESTS_SETTINGS_FILEPATH = str(parent_dir / 'unittests.yml')
+
 __all__ = [
+    'MAINNET_SETTINGS_FILEPATH',
+    'TESTNET_SETTINGS_FILEPATH',
+    'UNITTESTS_SETTINGS_FILEPATH',
     'HathorSettings',
 ]

hathor/conf/get_settings.py

@@ -17,33 +17,72 @@
 from types import ModuleType
 from typing import Optional
 
+from structlog import get_logger
+
+from hathor import conf
 from hathor.conf.settings import HathorSettings as Settings
 
+logger = get_logger()
+
+_settings_filepath: Optional[str] = None
 _config_file: Optional[str] = None
 
 
 def HathorSettings() -> Settings:
-    """ Return configuration file namedtuple
-        Get the file from environment variable 'HATHOR_CONFIG_FILE'
-        If not set we return the config file of the mainnet
+    """
+    Returns the configuration named tuple.
+
+    Tries to get the configuration from a python module in the 'HATHOR_CONFIG_FILE' env var, which will be deprecated.
+    If not found, tries to get it from a yaml filepath in the 'HATHOR_YAML_CONFIG', which will be the new standard.
+
+    If neither is set, or if the module import fails, the mainnet configuration is returned.
     """
     settings_module = get_settings_module()
-    settings = getattr(settings_module, 'SETTINGS')
-    assert isinstance(settings, Settings)
-    return settings
 
+    if settings_module is not None:
+        log = logger.new()
+        log.warn(
+            "Setting a config module via the 'HATHOR_CONFIG_FILE' env var will be deprecated soon. "
+            "Use the '--config-yaml' CLI option or the 'HATHOR_CONFIG_YAML' env var to set a yaml filepath instead."
+        )
+        settings = getattr(settings_module, 'SETTINGS')
+        assert isinstance(settings, Settings)
+        return settings
 
-def get_settings_module() -> ModuleType:
+    settings_filepath = get_settings_filepath()
+
+    return Settings.from_yaml(filepath=settings_filepath)
+
+
+def get_settings_module() -> Optional[ModuleType]:
     global _config_file
     # Import config file for network
-    default_file = 'hathor.conf.mainnet'
-    config_file = os.environ.get('HATHOR_CONFIG_FILE', default_file)
+    config_file = os.environ.get('HATHOR_CONFIG_FILE')
     if _config_file is None:
         _config_file = config_file
     elif _config_file != config_file:
         raise Exception('loading config twice with a different file')
+
+    if not config_file:
+        return None
+
     try:
         module = importlib.import_module(config_file)
     except ModuleNotFoundError:
+        default_file = 'hathor.conf.mainnet'
         module = importlib.import_module(default_file)
+
     return module
+
+
+def get_settings_filepath() -> str:
+    global _settings_filepath
+
+    new_settings_filepath = os.environ.get('HATHOR_CONFIG_YAML', conf.MAINNET_SETTINGS_FILEPATH)
+
+    if _settings_filepath is not None and _settings_filepath != new_settings_filepath:
+        raise Exception('loading config twice with a different file')
+
+    _settings_filepath = new_settings_filepath
+
+    return new_settings_filepath

hathor/conf/mainnet.yml

@@ -0,0 +1,179 @@
+P2PKH_VERSION_BYTE: x28
+MULTISIG_VERSION_BYTE: x64
+NETWORK_NAME: mainnet
+BOOTSTRAP_DNS:
+  - mainnet.hathor.network
+ENABLE_PEER_WHITELIST: true
+WHITELIST_URL: https://hathor-public-files.s3.amazonaws.com/whitelist_peer_ids
+
+# Genesis stuff
+GENESIS_OUTPUT_SCRIPT: 76a9147fd4ae0e4fb2d2854e76d359029d8078bb99649e88ac
+GENESIS_TIMESTAMP: 1578075305
+GENESIS_BLOCK_NONCE: 2591358
+GENESIS_BLOCK_HASH: 000006cb93385b8b87a545a1cbb6197e6caff600c12cc12fc54250d39c8088fc
+GENESIS_TX1_NONCE: 7715
+GENESIS_TX1_HASH: 0002d4d2a15def7604688e1878ab681142a7b155cbe52a6b4e031250ae96db0a
+GENESIS_TX2_NONCE: 3769
+GENESIS_TX2_HASH: 0002ad8d1519daaddc8e1a37b14aac0b045129c01832281fb1c02d873c7abbf9
+
+CHECKPOINTS:
+  100_000: 0000000000001247073138556b4f60fff3ff6eec6521373ccee5a6526a7c10af
+  200_000: 00000000000001bf13197340ae0807df2c16f4959da6054af822550d7b20e19e
+  300_000: 00000000000000e1e8bdba2006cc34db3a1f20294cbe87bd52cceda245238290
+  400_000: 000000000000002ae98f2a15db331d059eeed34d71f813f51d1ac1dbf3d94089
+  500_000: 00000000000000036f2f7234f7bf83b5746ce9b8179922d2781efd82aa3d72bf
+  600_000: 0000000000000001ad38d502f537ce757d7e732230d22434238ca215dd92cca1
+  700_000: 000000000000000066f04be2f3a8607c1c71682e65e07150822fb03afcbf4035
+  800_000: 0000000000000000958372b3ce24a26ce97a3b063c835e7d55c632f289f2cdb0
+  900_000: 0000000000000000c9bac3c3c71a1324f66481be03ad0e5d5fbbed94fc6b8794
+  1_000_000: 00000000000000001060adafe703b8aa28c7d2cfcbddf77d52e62ea0a1df5416
+  1_100_000: 00000000000000000ecc349992158a3972e7a24af494a891a8d1ae3ab982ee4e
+  1_200_000: 000000000000000091ddabd35a0c3984609e2892b72b14d38d23d58e1fa87c91
+  1_300_000: 00000000000000000244794568649ac43e0abd4b53b1a583b6cc8e243e65f582
+  1_400_000: 000000000000000011a65b1c3cba2b94ad05525ac2ec60f315bb7b204c8160c7
+  1_500_000: 0000000000000000ddbbf005a3970f256ad46167fc2143796d8f87c0c905e657
+  1_600_000: 00000000000000011098dda3dbe2ac95287ec0f3c12edc5c054dd8edc70cd6c3
+  1_700_000: 000000000000000054278ce817fda6cd3287144545babf0a415f883d074601ab
+  1_800_000: 00000000000000002110c5ccb781bee9fea0a4cbbd49e52023ffb5900732ee4d
+  1_900_000: 000000000000000032a8f2411190e1e49ff577d352950011083b85d935453338
+  2_000_000: 000000000000000005c31cc418e95497dbb2017a6ae2683a1550bd61f180b5b1
+  2_100_000: 00000000000000000c96c02d514017263d4e624a61fb9f10babcbf8d4632b67b
+  2_200_000: 00000000000000001016a7bbb6ccfc957ba6d29a562b43e8620f57ddc9147dde
+  2_300_000: 0000000000000000164dafd8d922c783a99d83f66220eb7c54f11bee1aaac126
+  2_400_000: 0000000000000000067aa4bf7306dadf0f56e38380327a472f55e7be72fbe7da
+  2_500_000: 00000000000000000c418b03ceb3a4fe7023674811f8ec94d7b9d5b1879ddc28
+  2_600_000: 0000000000000000020af703e2955e3f7934e8bc376da2ba6cfc6dc609feaf84
+  2_700_000: 00000000000000000cf3a35ab01a2281024ca4ca7871f5a6d67106eb36151038
+  2_800_000: 000000000000000004439733fd419a8a747e8afe2f89348a17c1fac24538a63c
+  2_900_000: 0000000000000000090cbd5a7958c82a2b969103001d92334f287dadcf3e01bc
+  3_000_000: 000000000000000013c9086f4ce441f5db5de55a5e235f4f7f1ef223aedfe2db
+  3_100_000: 00000000000000000d226a5998ffc65af89b1226126b1af1f8d0712a5301c775
+  3_200_000: 0000000000000000028d9629d85d93d0f5e798a498ca7b1710ffc157fa045cd5
+  3_300_000: 0000000000000000065b74441acb3d2ff770d384b2bad44c9823f26a0327690c
+  3_400_000: 000000000000000077242c961a0c6f708bc671a8372eb8b095311f091fddc6c3
+
+SOFT_VOIDED_TX_IDS:
+  - 0000000012a922a6887497bed9c41e5ed7dc7213cae107db295602168266cd02
+  - 000000001980b413ad5b5c5152338093aecfb1f5a7563d4e7fef8fb240a50bb9
+  - 000000001bf05ea882891c99e5285f38e001f10226380a830168d8070c21b78c
+  - 0000000024e0320e4dd6990299f083db2448c9f200223cad8ac23c282fd4c80e
+  - 000000002767852b0eaca53a0f91db8202bea171c0d060fca4ae1030fd2a2e7a
+  - 000000002875eff18af64f50481bc7576224572da7d63a43e994110b0002f6b7
+  - 000000003e888a6a898a59c569ed839d047e5490554b132b2a3fd96bca8a8166
+  - 0000000042ecfa3e98251eb56a8c19f6914b8cd275bcd49c1c84f9fc28123207
+  - 0000000051c62be84b273ac17bba34426c654464eff7b7563208c4a3a2582fb6
+  - 0000000058738ab486ec8da130e394361cb78fb331c5b5adf11798e046d89f08
+  - 00000000818f72870b4df1961e8b81daacc00283490758c3ef6741245116e6ad
+  - 00000000998bacf9dfc135233f83127a01ad61f5707955f4e0d0d12c80e85f2e
+  - 00000000b733604d8afdf8102b7dcf9a29605312c0466f98f5183213c4e1d327
+  - 00000000c57350f31fa1b09af55a6ea722867a596b5f5b408c541bfaec38fd8f
+  - 00000000c58405f10e5a19f46295f08cb3c9d3e0479ff7ff418b9ad5e2c074d4
+  - 00000000c780100a67213a1cf726f57bfd02e4d7e673b24693e40dab1eabc372
+  - 00000000d7dbc1e0b99d6940561ddd9b99fa2f51fde82ea343156f90daa0fa0a
+  - 00000000f44f6785caca715698bafe9a60895bb6675579b0c33f6b45330a538c
+  - 00000017df9acb795a358e8a6c1afde3ac0d3dfd6241441320b9449fdd27534d
+  - 00000042d700981477caec92d78861bac49ef72d8d54dbaf6fbc316025563f93
+  - 000000a56b177bfc6d3b83c351cb99cba665898c029f7bb628d36bdc9a3053cc
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+  - 000000b2af584901b731c4d2d6207a531ce3f4447c6470de9c0b189fe2cd616e
+  - 000000d133f2710bafd4d8b63b81081f629cf34ebcaa70ed44243a014ed85a1a
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