def deploy_new_config(config_path: Path, selections: Dict[str, Any]) -> None:
"""
Applies selections to the template and writes the result to config_path
:param config_path: Path object for new config file. Should not exist yet
:param selecions: Dict containing selections taken by the user.
"""
from jinja2.exceptions import TemplateNotFound
try:
exchange_template = MAP_EXCHANGE_CHILDCLASS.get(
selections['exchange_name'], selections['exchange_name'])
selections['exchange'] = render_template(
templatefile=f"subtemplates/exchange_{exchange_template}.j2",
arguments=selections
)
except TemplateNotFound:
selections['exchange'] = render_template(
templatefile="subtemplates/exchange_generic.j2",
arguments=selections
)
config_text = render_template(templatefile='base_config.json.j2',
arguments=selections)
logger.info(f"Writing config to `{config_path}`.")
config_path.write_text(config_text)
def load_exchange(exchange_name: str,
config: dict,
validate: bool = True) -> Exchange:
"""
Load the custom class from config parameter
:param exchange_name: name of the Exchange to load
:param config: configuration dictionary
"""
# Map exchange name to avoid duplicate classes for identical exchanges
exchange_name = MAP_EXCHANGE_CHILDCLASS.get(exchange_name,
exchange_name)
exchange_name = exchange_name.title()
exchange = None
try:
exchange = ExchangeResolver._load_exchange(exchange_name,
kwargs={
'config': config,
'validate': validate
})
except ImportError:
logger.info(
f"No {exchange_name} specific subclass found. Using the generic class instead."
)
if not exchange:
exchange = Exchange(config, validate=validate)
return exchange
def __init__(self,
exchange_name: str,
config: dict,
validate: bool = True) -> None:
"""
Load the custom class from config parameter
:param config: configuration dictionary
"""
# Map exchange name to avoid duplicate classes for identical exchanges
exchange_name = MAP_EXCHANGE_CHILDCLASS.get(exchange_name,
exchange_name)
exchange_name = exchange_name.title()
try:
self.exchange = self._load_exchange(exchange_name,
kwargs={
'config': config,
'validate': validate
})
except ImportError:
logger.info(
f"No {exchange_name} specific subclass found. Using the generic class instead."
)
if not hasattr(self, "exchange"):
self.exchange = Exchange(config, validate=validate)