commit 4e7c0f0d73f9a399fa14ce0bb05f54debf1d4037
parent b5617fc9fb6f738c2eecf78de31a0ac5ae428933
Author: lash <dev@holbrook.no>
Date: Tue, 26 Apr 2022 19:07:34 +0000
Add settings renderer, cli flag and config handling
Diffstat:
8 files changed, 109 insertions(+), 0 deletions(-)
diff --git a/chainsyncer/cli/__init__.py b/chainsyncer/cli/__init__.py
@@ -0,0 +1,12 @@
+# standard imports
+import os
+
+# local imports
+from .base import *
+from .arg import process_flags
+from .config import process_config
+
+
+__script_dir = os.path.dirname(os.path.realpath(__file__))
+data_dir = os.path.join(os.path.dirname(__script_dir), 'data')
+config_dir = os.path.join(data_dir, 'config')
diff --git a/chainsyncer/cli/arg.py b/chainsyncer/cli/arg.py
@@ -0,0 +1,12 @@
+# local imports
+from .base import SyncFlag
+
+
+def process_flags(argparser, flags):
+
+ if flags & SyncFlag.RANGE > 0:
+ argparser.add_argument('--offset', type=int, help='Block to start sync from. Default is start of history (0).')
+ argparser.add_argument('--until', type=int, default=-1, help='Block to stop sync on. Default is stop at block height of first run.')
+ if flags & SyncFlag.HEAD > 0:
+ argparser.add_argument('--head', action='store_true', help='Start from latest block as offset')
+ argparser.add_argument('--keep-alive', action='store_true', help='Do not stop syncing when caught up')
diff --git a/chainsyncer/cli/base.py b/chainsyncer/cli/base.py
@@ -0,0 +1,7 @@
+# standard imports
+import enum
+
+
+class SyncFlag(enum.IntEnum):
+ RANGE = 1
+ HEAD = 2
diff --git a/chainsyncer/cli/config.py b/chainsyncer/cli/config.py
@@ -0,0 +1,17 @@
+# external imports
+from chainsyncer.cli import SyncFlag
+
+
+def process_config(config, args, flags):
+ args_override = {}
+ if flags & SyncFlag.RANGE:
+ args_override['SYNCER_OFFSET'] = getattr(args, 'offset')
+ args_override['SYNCER_LIMIT'] = getattr(args, 'until')
+
+ config.dict_override(args_override, 'local cli args')
+
+ if flags & SyncFlag.HEAD:
+ config.add(getattr(args, 'keep_alive'), '_KEEP_ALIVE')
+ config.add(getattr(args, 'head'), '_HEAD')
+
+ return config
diff --git a/chainsyncer/data/config/syncer.ini b/chainsyncer/data/config/syncer.ini
@@ -0,0 +1,3 @@
+[syncer]
+offset = 0
+limit = 0
diff --git a/chainsyncer/paths.py b/chainsyncer/paths.py
@@ -0,0 +1 @@
+
diff --git a/chainsyncer/settings.py b/chainsyncer/settings.py
@@ -0,0 +1,51 @@
+# standard imports
+import logging
+
+# external imports
+from chainlib.eth.block import block_latest
+from hexathon import (
+ to_int as hex_to_int,
+ strip_0x,
+ )
+
+logg = logging.getLogger(__name__)
+
+
+class ChainsyncerSettings:
+
+ def process_sync_range(self, config):
+ o = block_latest()
+ r = self.o['RPC'].do(o)
+ block_offset = int(strip_0x(r), 16) + 1
+ logg.info('network block height at startup is {}'.format(block_offset))
+
+ keep_alive = False
+ session_block_offset = 0
+ block_limit = 0
+ until = 0
+
+ if config.true('_HEAD'):
+ self.o['SYNCER_OFFSET'] = block_offset
+ self.o['SYNCER_LIMIT'] = -1
+ return
+
+ session_block_offset = int(config.get('SYNCER_OFFSET'))
+ until = int(config.get('SYNCER_LIMIT'))
+
+ if until > 0:
+ if until <= session_block_offset:
+ raise ValueError('sync termination block number must be later than offset ({} >= {})'.format(session_block_offset, until))
+ block_limit = until
+ elif until == -1:
+ keep_alive = True
+
+ if session_block_offset == -1:
+ session_block_offset = block_offset
+ elif config.true('_KEEP_ALIVE'):
+ block_limit = -1
+ else:
+ if block_limit == 0:
+ block_limit = block_offset
+
+ self.o['SYNCER_OFFSET'] = session_block_offset
+ self.o['SYNCER_LIMIT'] = block_limit
diff --git a/chainsyncer/store/mem.py b/chainsyncer/store/mem.py
@@ -32,3 +32,9 @@ class SyncMemStore(SyncStore):
def get_target(self):
return self.target
+
+
+ def stop(self, item):
+ if item != None:
+ super(SyncRocksDbStore, self).stop(item)
+ logg.info('I am an in-memory only state store. I am shutting down now, so all state will now be discarded.')
