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Implement cli processing, settings renderer

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This commit is contained in:
lash 2022-04-26 17:25:37 +00:00
parent 99cbf20b64
commit 7e78fd0da2
Signed by: lash
GPG Key ID: 21D2E7BB88C2A746
8 changed files with 219 additions and 89 deletions
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3
chaind/cli/__init__.py Normal file
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@ -0,0 +1,3 @@
from .base import *
from .arg import ArgumentParser
from .config import Config

17
chaind/cli/arg.py Normal file
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# external imports
from chainlib.eth.cli import ArgumentParser as BaseArgumentParser
# local imports
from .base import SyncFlag, Flag
class ArgumentParser(BaseArgumentParser):
def process_local_flags(self, local_arg_flags):
if local_arg_flags & SyncFlag.SESSION:
self.add_argument('--session-id', dest='session_id', type=str, help='Session to store state and data under')
self.add_argument('--runtime-dir', dest='runtime_dir', type=str, help='Directory to store volatile data')
self.add_argument('--data-dir', dest='data_dir', type=str, help='Directory to store persistent data')
if local_arg_flags & SyncFlag.SYNCER:
self.add_argument('--offset', type=int, help='Block to start sync from. Default is the latest block at first run.')
self.add_argument('--until', type=int, default=-1, help='Block to stop sync on. Default is do not stop.')

22
chaind/cli/base.py Normal file
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# standard imports
import enum
# external imports
from chainlib.eth.cli import (
argflag_std_read,
argflag_std_write,
argflag_std_base,
Flag,
)
class SyncFlag(enum.IntEnum):
SESSION = 1
SYNCER = 16
QUEUE = 256
DISPATCH = 512
SOCKET = 4096
argflag_local_sync = argflag_std_base | Flag.CHAIN_SPEC | SyncFlag.SYNCER | SyncFlag.SESSION
argflag_local_queue = SyncFlag.QUEUE | Flag.CHAIN_SPEC | SyncFlag.SOCKET | SyncFlag.SESSION

46
chaind/cli/config.py Normal file
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# standard imports
import logging
import os
# external imports
from chainlib.cli import (
Config as BaseConfig,
Flag,
)
from chaind.cli import SyncFlag
script_dir = os.path.dirname(os.path.realpath(__file__))
logg = logging.getLogger(__name__)
class Config(BaseConfig):
local_base_config_dir = os.path.join(script_dir, '..', 'data', 'config')
@classmethod
def from_args(cls, engine, args, arg_flags, local_arg_flags, extra_args={}, default_config_dir=None, base_config_dir=None, default_fee_limit=None):
expanded_base_config_dir = [cls.local_base_config_dir]
if base_config_dir != None:
if isinstance(base_config_dir, str):
base_config_dir = [base_config_dir]
for d in base_config_dir:
expanded_base_config_dir.append(d)
config = BaseConfig.from_args(args, arg_flags, extra_args=extra_args, default_config_dir=default_config_dir, base_config_dir=expanded_base_config_dir, load_callback=None)
local_args_override = {}
if local_arg_flags & SyncFlag.SESSION:
local_args_override['SESSION_ID'] = getattr(args, 'session_id')
local_args_override['SESSION_RUNTIME_DIR'] = getattr(args, 'runtime_dir')
local_args_override['SESSION_DATA_DIR'] = getattr(args, 'data_dir')
local_args_override['SYNCER_OFFSET'] = getattr(args, 'offset')
local_args_override['SYNCER_LIMIT'] = getattr(args, 'until')
if local_arg_flags & SyncFlag.SOCKET:
local_args_override['SESSION_SOCKET_PATH'] = getattr(args, 'socket')
config.dict_override(local_args_override, 'local cli args')
config.add(engine, 'CHAIND_ENGINE', False)
return config

12
chaind/data/config/config.ini
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@ -4,12 +4,6 @@ runtime_dir =
id =
data_dir =
[database]
engine =
name = chaind
driver =
user =
password =
host =
port =
debug = 0
[syncer]
offset =
limit =

1
chaind/session.py
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@ -117,3 +117,4 @@ class SessionController:
logg.debug('{} bytes sent'.format(len(v)))
except BrokenPipeError:
logg.debug('they just hung up. how rude.')
srvs.close()

127
chaind/settings.py Normal file
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# standard imports
import logging
import os
# external imports
from chainlib.chain import ChainSpec
from chainlib.eth.block import block_latest
from hexathon import (
to_int as hex_to_int,
strip_0x,
)
logg = logging.getLogger(__name__)
class ChaindSettings:
def __init__(self):
self.o = {}
self.get = self.o.get
def process_common(self, config):
self.o['CHAIN_SPEC'] = ChainSpec.from_chain_str(config.get('CHAIN_SPEC'))
self.o['SOCKET_PATH'] = config.get('SESSION_SOCKET_PATH')
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
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
else:
keep_alive=True
block_limit = -1
if session_block_offset == -1:
session_block_offset = block_offset
elif not config.true('_KEEP_ALIVE'):
if block_limit == 0:
lock_limit = block_offset
self.o['SYNCER_OFFSET'] = session_block_offset
self.o['SYNCER_LIMIT'] = block_limit
def process_sync_session(self, config):
session_id = config.get('SESSION_ID')
base_dir = os.getcwd()
data_dir = config.get('SESSION_DATA_DIR')
if data_dir == None:
data_dir = os.path.join(base_dir, '.chaind', 'chaind')
data_engine_dir = os.path.join(data_dir, config.get('CHAIND_ENGINE'))
os.makedirs(data_engine_dir, exist_ok=True)
# check if existing session
if session_id == None:
fp = os.path.join(data_engine_dir, 'default')
try:
os.stat(fp)
fp = os.path.realpath(fp)
except FileNotFoundError:
fp = None
if fp != None:
session_id = os.path.basename(fp)
make_default = False
if session_id == None:
session_id = str(uuid.uuid4())
make_default = True
# create the session persistent dir
session_dir = os.path.join(data_engine_dir, session_id)
if make_default:
fp = os.path.join(data_engine_dir, 'default')
os.symlink(session_dir, fp)
data_dir = os.path.join(session_dir, 'sync')
os.makedirs(data_dir, exist_ok=True)
# create volatile dir
uid = os.getuid()
runtime_dir = config.get('SESSION_RUNTIME_DIR')
if runtime_dir == None:
runtime_dir = os.path.join('/run', 'user', str(uid), 'chaind')
runtime_dir = os.path.join(runtime_dir, config.get('CHAIND_ENGINE'), session_id, 'sync')
os.makedirs(runtime_dir, exist_ok=True)
self.o['SESSION_RUNTIME_DIR'] = runtime_dir
self.o['SESSION_DATA_DIR'] = data_dir
self.o['SESSION_ID'] = session_id
def process_sync_interface(self, config):
raise NotImplementedError('no sync interface implementation defined')
def process_sync(self, config):
self.process_sync_interface(config)
self.process_sync_session(config)
self.process_sync_range(config)
def process(self, config):
self.process_common(config)
self.process_sync(config)
def __str__(self):
ks = list(self.o.keys())
ks.sort()
s = ''
for k in ks:
s += '{}: {}\n'.format(k, self.o.get(k))
return s

80
scripts/migrate.py
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@ -1,80 +0,0 @@
#!/usr/bin/python
import os
import argparse
import logging
# external imports
import alembic
from alembic.config import Config as AlembicConfig
import confini
import chainqueue.db
import chainsyncer.db
# local imports
from chaind import Environment
logging.basicConfig(level=logging.WARNING)
logg = logging.getLogger()
rootdir = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
dbdir = os.path.join(rootdir, 'chaind', 'db')
configdir = os.path.join(rootdir, 'chaind', 'data', 'config')
default_migrations_dir = os.path.join(dbdir, 'migrations')
env = Environment(env=os.environ)
argparser = argparse.ArgumentParser()
argparser.add_argument('-c', type=str, default=env.config_dir, help='config directory')
argparser.add_argument('--env-prefix', default=os.environ.get('CONFINI_ENV_PREFIX'), dest='env_prefix', type=str, help='environment prefix for variables to overwrite configuration')
argparser.add_argument('--data-dir', dest='data_dir', type=str, help='data directory')
argparser.add_argument('--migrations-dir', dest='migrations_dir', default=default_migrations_dir, type=str, help='path to alembic migrations directory')
argparser.add_argument('--reset', action='store_true', help='reset exsting database')
argparser.add_argument('-v', action='store_true', help='be verbose')
argparser.add_argument('-vv', action='store_true', help='be more verbose')
args = argparser.parse_args()
if args.vv:
logging.getLogger().setLevel(logging.DEBUG)
elif args.v:
logging.getLogger().setLevel(logging.INFO)
# process config
logg.debug('loading config from {}'.format(args.c))
config = confini.Config(configdir, args.env_prefix, override_dirs=[args.c])
config.process()
args_override = {
'SESSION_DATA_DIR': getattr(args, 'data_dir'),
}
config.dict_override(args_override, 'cli args')
if config.get('DATABASE_ENGINE') == 'sqlite':
config.add(os.path.join(config.get('SESSION_DATA_DIR'), config.get('DATABASE_NAME') + '.sqlite'), 'DATABASE_NAME', True)
config.censor('PASSWORD', 'DATABASE')
logg.debug('config loaded:\n{}'.format(config))
config.add(os.path.join(args.migrations_dir, config.get('DATABASE_ENGINE')), '_MIGRATIONS_DIR', True)
if not os.path.isdir(config.get('_MIGRATIONS_DIR')):
logg.debug('migrations dir for engine {} not found, reverting to default'.format(config.get('DATABASE_ENGINE')))
config.add(os.path.join(args.migrations_dir, 'default'), '_MIGRATIONS_DIR', True)
os.makedirs(config.get('SESSION_DATA_DIR'), exist_ok=True)
dsn = chainqueue.db.dsn_from_config(config)
def main():
logg.info('using migrations dir {}'.format(config.get('_MIGRATIONS_DIR')))
logg.info('using db {}'.format(dsn))
ac = AlembicConfig(os.path.join(config.get('_MIGRATIONS_DIR'), 'alembic.ini'))
ac.set_main_option('sqlalchemy.url', dsn)
ac.set_main_option('script_location', config.get('_MIGRATIONS_DIR'))
if args.reset:
logg.debug('reset is set, purging existing content')
alembic.command.downgrade(ac, 'base')
alembic.command.upgrade(ac, 'head')
if __name__ == '__main__':
main()