def init_strategy_loader(env, source_code, user_funcs, config):
if source_code is not None:
return SourceCodeStrategyLoader(source_code)
elif user_funcs is not None:
return UserFuncStrategyLoader(user_funcs)
else:
return FileStrategyLoader(config.base.strategy_file)
def run(config, source_code=None, user_funcs=None):
env = Environment(config)
persist_helper = None
init_succeed = False
mod_handler = ModHandler()
try:
# avoid register handlers everytime
# when running in ipython
set_loggers(config)
basic_system_log.debug("\n" + pformat(config.convert_to_dict()))
if source_code is not None:
env.set_strategy_loader(SourceCodeStrategyLoader(source_code))
elif user_funcs is not None:
env.set_strategy_loader(UserFuncStrategyLoader(user_funcs))
else:
env.set_strategy_loader(FileStrategyLoader(config.base.strategy_file))
env.set_global_vars(GlobalVars())
mod_handler.set_env(env)
mod_handler.start_up()
if not env.data_source:
env.set_data_source(BaseDataSource(config.base.data_bundle_path))
env.set_data_proxy(DataProxy(env.data_source))
Scheduler.set_trading_dates_(env.data_source.get_trading_calendar())
scheduler = Scheduler(config.base.frequency)
mod_scheduler._scheduler = scheduler
env._universe = StrategyUniverse()
_adjust_start_date(env.config, env.data_proxy)
_validate_benchmark(env.config, env.data_proxy)
# FIXME
start_dt = datetime.datetime.combine(config.base.start_date, datetime.datetime.min.time())
env.calendar_dt = start_dt
env.trading_dt = start_dt
broker = env.broker
assert broker is not None
env.portfolio = broker.get_portfolio()
env.benchmark_portfolio = create_benchmark_portfolio(env)
event_source = env.event_source
assert event_source is not None
bar_dict = BarMap(env.data_proxy, config.base.frequency)
env.set_bar_dict(bar_dict)
if env.price_board is None:
from .core.bar_dict_price_board import BarDictPriceBoard
env.price_board = BarDictPriceBoard()
ctx = ExecutionContext(const.EXECUTION_PHASE.GLOBAL)
ctx._push()
env.event_bus.publish_event(Event(EVENT.POST_SYSTEM_INIT))
scope = create_base_scope()
scope.update({
"g": env.global_vars
})
apis = api_helper.get_apis()
scope.update(apis)
scope = env.strategy_loader.load(scope)
if env.config.extra.enable_profiler:
enable_profiler(env, scope)
ucontext = StrategyContext()
user_strategy = Strategy(env.event_bus, scope, ucontext)
scheduler.set_user_context(ucontext)
if not config.extra.force_run_init_when_pt_resume:
with run_with_user_log_disabled(disabled=config.base.resume_mode):
user_strategy.init()
if config.extra.context_vars:
for k, v in six.iteritems(config.extra.context_vars):
setattr(ucontext, k, v)
if config.base.persist:
persist_provider = env.persist_provider
persist_helper = PersistHelper(persist_provider, env.event_bus, config.base.persist_mode)
persist_helper.register('core', CoreObjectsPersistProxy(scheduler))
persist_helper.register('user_context', ucontext)
persist_helper.register('global_vars', env.global_vars)
persist_helper.register('universe', env._universe)
if isinstance(event_source, Persistable):
persist_helper.register('event_source', event_source)
persist_helper.register('portfolio', env.portfolio)
if env.benchmark_portfolio:
persist_helper.register('benchmark_portfolio', env.benchmark_portfolio)
for name, module in six.iteritems(env.mod_dict):
if isinstance(module, Persistable):
persist_helper.register('mod_{}'.format(name), module)
# broker will restore open orders from account
if isinstance(broker, Persistable):
persist_helper.register('broker', broker)
persist_helper.restore()
env.event_bus.publish_event(Event(EVENT.POST_SYSTEM_RESTORED))
init_succeed = True
# When force_run_init_when_pt_resume is active,
# we should run `init` after restore persist data
if config.extra.force_run_init_when_pt_resume:
assert config.base.resume_mode == True
with run_with_user_log_disabled(disabled=False):
user_strategy.init()
from .core.executor import Executor
Executor(env).run(bar_dict)
if env.profile_deco:
output_profile_result(env)
except CustomException as e:
if init_succeed and env.config.base.persist and persist_helper:
persist_helper.persist()
code = _exception_handler(e)
mod_handler.tear_down(code, e)
except Exception as e:
if init_succeed and env.config.base.persist and persist_helper:
persist_helper.persist()
exc_type, exc_val, exc_tb = sys.exc_info()
user_exc = create_custom_exception(exc_type, exc_val, exc_tb, config.base.strategy_file)
code = _exception_handler(user_exc)
mod_handler.tear_down(code, user_exc)
else:
result = mod_handler.tear_down(const.EXIT_CODE.EXIT_SUCCESS)
system_log.debug(_(u"strategy run successfully, normal exit"))
return result
def run(config, source_code=None, user_funcs=None):
env = Environment(config)
persist_helper = None
init_succeed = False
mod_handler = ModHandler() #初始化模块处理器，包含list和dict，存储模块名和配置信息
try:
# avoid register handlers everytime
# when running in ipython
set_loggers(config)
basic_system_log.debug("\n" + pformat(config.convert_to_dict()))
if source_code is not None:
env.set_strategy_loader(SourceCodeStrategyLoader(source_code))
elif user_funcs is not None:
env.set_strategy_loader(UserFuncStrategyLoader(user_funcs))
else: #将文件路径赋予env中的属性
env.set_strategy_loader(
FileStrategyLoader(config.base.strategy_file))
env.set_global_vars(GlobalVars())
mod_handler.set_env(env) #根据config读取mod，并绑定到env变量
mod_handler.start_up() #运行每个mod的启动函数，传入env.config，以及mod自己的config，后者冗余？
if not env.data_source:
env.set_data_source(data_k_bar) #BaseDataSource：读取bar数据，存储到对象属性中
env.set_data_proxy(DataProxy(env.data_source))
Scheduler.set_trading_dates_(env.data_source.get_trading_calendar())
scheduler = Scheduler(config.base.frequency)
mod_scheduler._scheduler = scheduler
env._universe = StrategyUniverse()
_adjust_start_date(env.config, env.data_proxy)
_validate_benchmark(env.config, env.data_proxy)
# FIXME
start_dt = datetime.datetime.combine(config.base.start_date,
datetime.datetime.min.time())
env.calendar_dt = start_dt
env.trading_dt = start_dt
broker = env.broker
assert broker is not None
env.portfolio = broker.get_portfolio()
env.benchmark_portfolio = create_benchmark_portfolio(env)
event_source = env.event_source
assert event_source is not None
#包含 data_proxy, frequency ...
bar_dict = BarMap(env.data_proxy, config.base.frequency)
env.set_bar_dict(bar_dict) #本地历史行情对象，包含所有
#获取最新价格
if env.price_board is None:
from .core.bar_dict_price_board import BarDictPriceBoard
env.price_board = BarDictPriceBoard()
ctx = ExecutionContext(const.EXECUTION_PHASE.GLOBAL)
ctx._push()
env.event_bus.publish_event(Event(EVENT.POST_SYSTEM_INIT))
#全局文件路径、文件名、log入口等，作为参数传递给编译
scope = create_base_scope()
scope.update({"g": env.global_vars})
#用户策略可调用的api，包括历史行情、下单函数等
apis = api_helper.get_apis()
scope.update(apis)
#加载用户策略文件，并执行？
scope = env.strategy_loader.load(scope)
#是否启用性能分析
if env.config.extra.enable_profiler:
enable_profiler(env, scope)
#生成用户策略运行时上下文变量
ucontext = StrategyContext()
user_strategy = Strategy(env.event_bus, scope, ucontext)
scheduler.set_user_context(ucontext)
#没有若策略运行时数据持久化，运行用户init
if not config.extra.force_run_init_when_pt_resume:
with run_with_user_log_disabled(disabled=config.base.resume_mode):
user_strategy.init()
#是否在参数中存在用户输入的运行时环境变量
if config.extra.context_vars:
for k, v in six.iteritems(config.extra.context_vars):
setattr(ucontext, k, v)
if config.base.persist:
persist_provider = env.persist_provider
if persist_provider is None:
raise RuntimeError(
_(u"Missing persist provider. You need to set persist_provider before use persist"
))
persist_helper = PersistHelper(persist_provider, env.event_bus,
config.base.persist_mode)
env.set_persist_helper(persist_helper)
persist_helper.register('core', CoreObjectsPersistProxy(scheduler))
persist_helper.register('user_context', ucontext)
persist_helper.register('global_vars', env.global_vars)
persist_helper.register('universe', env._universe)
if isinstance(event_source, Persistable):
persist_helper.register('event_source', event_source)
persist_helper.register('portfolio', env.portfolio)
if env.benchmark_portfolio:
persist_helper.register('benchmark_portfolio',
env.benchmark_portfolio)
for name, module in six.iteritems(env.mod_dict):
if isinstance(module, Persistable):
persist_helper.register('mod_{}'.format(name), module)
# broker will restore open orders from account
if isinstance(broker, Persistable):
persist_helper.register('broker', broker)
env.event_bus.publish_event(Event(EVENT.BEFORE_SYSTEM_RESTORED))
persist_helper.restore()
env.event_bus.publish_event(Event(EVENT.POST_SYSTEM_RESTORED))
init_succeed = True
#若启用回测数据持久化，恢复时重新初始化用户策略
# When force_run_init_when_pt_resume is active,
# we should run `init` after restore persist data
if config.extra.force_run_init_when_pt_resume:
assert config.base.resume_mode == True
with run_with_user_log_disabled(disabled=False):
env._universe._set = set()
user_strategy.init()
from .core.executor import Executor
Executor(env).run(bar_dict)
if env.profile_deco:
output_profile_result(env)
except CustomException as e:
if init_succeed and env.config.base.persist and persist_helper and env.config.base.persist_mode == const.PERSIST_MODE.ON_CRASH:
persist_helper.persist()
code = _exception_handler(e)
mod_handler.tear_down(code, e)
except Exception as e:
if init_succeed and env.config.base.persist and persist_helper and env.config.base.persist_mode == const.PERSIST_MODE.ON_CRASH:
persist_helper.persist()
exc_type, exc_val, exc_tb = sys.exc_info()
user_exc = create_custom_exception(exc_type, exc_val, exc_tb,
config.base.strategy_file)
code = _exception_handler(user_exc)
mod_handler.tear_down(code, user_exc)
else:
if (env.config.base.persist and persist_helper
and env.config.base.persist_mode
== const.PERSIST_MODE.ON_NORMAL_EXIT):
persist_helper.persist()
result = mod_handler.tear_down(const.EXIT_CODE.EXIT_SUCCESS)
system_log.debug(_(u"strategy run successfully, normal exit"))
return result