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LangBot/pkg/pipeline/longtext/longtext.py
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Python

from __future__ import annotations
import os
import traceback
from . import strategy
from .. import stage, entities
import langbot_plugin.api.entities.builtin.platform.message as platform_message
from ...utils import importutil
import langbot_plugin.api.entities.builtin.pipeline.query as pipeline_query
from . import strategies
importutil.import_modules_in_pkg(strategies)
@stage.stage_class('LongTextProcessStage')
class LongTextProcessStage(stage.PipelineStage):
"""Long message processing stage
Rewrite:
- resp_message_chain
"""
strategy_impl: strategy.LongTextStrategy
async def initialize(self, pipeline_config: dict):
config = pipeline_config['output']['long-text-processing']
if config['strategy'] == 'image':
use_font = config['font-path']
try:
# 检查是否存在
if not os.path.exists(use_font):
# 若是windows系统,使用微软雅黑
if os.name == 'nt':
use_font = 'C:/Windows/Fonts/msyh.ttc'
if not os.path.exists(use_font):
self.ap.logger.warn(
'Font file not found, and Windows system font cannot be used, switch to forward message component to send long messages, you can adjust the related settings in the configuration file.'
)
config['blob_message_strategy'] = 'forward'
else:
self.ap.logger.info('Using Windows system font: ' + use_font)
config['font-path'] = use_font
else:
self.ap.logger.warn(
'Font file not found, and system font cannot be used, switch to forward message component to send long messages, you can adjust the related settings in the configuration file.'
)
pipeline_config['output']['long-text-processing']['strategy'] = 'forward'
except Exception:
traceback.print_exc()
self.ap.logger.error(
'Failed to load font file ({}), switch to forward message component to send long messages, you can adjust the related settings in the configuration file.'.format(
use_font
)
)
pipeline_config['output']['long-text-processing']['strategy'] = 'forward'
for strategy_cls in strategy.preregistered_strategies:
if strategy_cls.name == config['strategy']:
self.strategy_impl = strategy_cls(self.ap)
break
else:
raise ValueError(f'Long message processing strategy not found: {config["strategy"]}')
await self.strategy_impl.initialize()
async def process(self, query: pipeline_query.Query, stage_inst_name: str) -> entities.StageProcessResult:
# 检查是否包含非 Plain 组件
contains_non_plain = False
for msg in query.resp_message_chain[-1]:
if not isinstance(msg, platform_message.Plain):
contains_non_plain = True
break
if contains_non_plain:
self.ap.logger.debug('Message contains non-Plain components, skip long message processing.')
elif (
len(str(query.resp_message_chain[-1]))
> query.pipeline_config['output']['long-text-processing']['threshold']
):
query.resp_message_chain[-1] = platform_message.MessageChain(
await self.strategy_impl.process(str(query.resp_message_chain[-1]), query)
)
return entities.StageProcessResult(result_type=entities.ResultType.CONTINUE, new_query=query)