186 lines
7.3 KiB
Python
186 lines
7.3 KiB
Python
import os
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import sys
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from typing import Optional
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from pydantic_settings import BaseSettings
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from pydantic import validator, ConfigDict
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from loguru import logger
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from watchfiles import watch, Change
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from threading import Thread
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from langfuse import Langfuse
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from langfuse.langchain import CallbackHandler
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class LangfuseConfig(BaseSettings):
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enabled: bool = True
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public_key: Optional[str] = None
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secret_key: Optional[str] = None
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host: Optional[str] = None
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@validator('host')
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def validate_host(cls, v):
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if v and not v.startswith(('http://', 'https://')):
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raise ValueError("Langfuse host must start with http:// or https://")
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return v
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def __init__(self, **data):
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try:
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logger.info("Initializing LangfuseConfig with data: %s", data)
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logger.info("Environment variables:")
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logger.info("LANGFUSE_PUBLIC_KEY: %s", os.getenv('LANGFUSE_PUBLIC_KEY'))
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logger.info("LANGFUSE_SECRET_KEY: %s", os.getenv('LANGFUSE_SECRET_KEY'))
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logger.info("LANGFUSE_HOST: %s", os.getenv('LANGFUSE_HOST'))
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super().__init__(**data)
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logger.info("LangfuseConfig initialized successfully")
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logger.info("Public Key: %s", self.public_key)
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logger.info("Secret Key: %s", self.secret_key)
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logger.info("Host: %s", self.host)
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except Exception as e:
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logger.error("Failed to initialize LangfuseConfig: %s", e)
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logger.error("Current environment variables:")
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logger.error("LANGFUSE_PUBLIC_KEY: %s", os.getenv('LANGFUSE_PUBLIC_KEY'))
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logger.error("LANGFUSE_SECRET_KEY: %s", os.getenv('LANGFUSE_SECRET_KEY'))
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logger.error("LANGFUSE_HOST: %s", os.getenv('LANGFUSE_HOST'))
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raise
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model_config = ConfigDict(
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env_prefix='LANGFUSE_',
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env_file='.env',
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env_file_encoding='utf-8',
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extra='ignore',
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env_nested_delimiter='__',
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case_sensitive=True
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)
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class LogConfig(BaseSettings):
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level: str = 'INFO'
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model_config = ConfigDict(
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env_prefix='LOG_',
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extra='ignore'
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)
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class LLMConfig(BaseSettings):
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mode: str = 'ollama'
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# OpenAI settings
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openai_api_key: Optional[str] = None
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openai_api_base_url: Optional[str] = None
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openai_model: Optional[str] = None
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# Ollama settings
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ollama_base_url: Optional[str] = None
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ollama_model: Optional[str] = None
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@validator('mode')
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def validate_mode(cls, v):
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if v not in ['openai', 'ollama']:
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raise ValueError("LLM mode must be either 'openai' or 'ollama'")
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return v
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model_config = ConfigDict(
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env_prefix='LLM_',
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env_file='.env',
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env_file_encoding='utf-8',
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extra='ignore'
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)
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class Settings:
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def __init__(self):
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try:
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logger.info("Initializing LogConfig")
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self.log = LogConfig()
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logger.info("LogConfig initialized: %s", self.log.model_dump())
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logger.info("Initializing LLMConfig")
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self.llm = LLMConfig()
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logger.info("LLMConfig initialized: %s", self.llm.model_dump())
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logger.info("Initializing LangfuseConfig")
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self.langfuse = LangfuseConfig()
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logger.info("LangfuseConfig initialized: %s", self.langfuse.model_dump())
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logger.info("Validating configuration")
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self._validate()
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logger.info("Starting config watcher")
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self._start_watcher()
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logger.info("Initializing Langfuse")
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self._init_langfuse()
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logger.info("Configuration initialized successfully")
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except Exception as e:
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logger.error(f"Configuration initialization failed: {e}")
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logger.error("Current configuration state:")
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logger.error("LogConfig: %s", self.log.model_dump() if hasattr(self, 'log') else 'Not initialized')
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logger.error("LLMConfig: %s", self.llm.model_dump() if hasattr(self, 'llm') else 'Not initialized')
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logger.error("LangfuseConfig: %s", self.langfuse.model_dump() if hasattr(self, 'langfuse') else 'Not initialized')
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raise
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def _validate(self):
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logger.info(f"LLM mode set to: '{self.llm.mode}'")
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if self.llm.mode == 'openai':
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if not self.llm.openai_api_key:
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raise ValueError("LLM mode is 'openai', but OPENAI_API_KEY is not set.")
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if not self.llm.openai_api_base_url:
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raise ValueError("LLM mode is 'openai', but OPENAI_API_BASE_URL is not set.")
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if not self.llm.openai_model:
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raise ValueError("LLM mode is 'openai', but OPENAI_MODEL is not set.")
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elif self.llm.mode == 'ollama':
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if not self.llm.ollama_base_url:
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raise ValueError("LLM mode is 'ollama', but OLLAMA_BASE_URL is not set.")
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if not self.llm.ollama_model:
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raise ValueError("LLM mode is 'ollama', but OLLAMA_MODEL is not set.")
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logger.info("Configuration validated successfully.")
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def _init_langfuse(self):
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if self.langfuse.enabled:
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try:
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# Verify all required credentials are present
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if not all([self.langfuse.public_key, self.langfuse.secret_key, self.langfuse.host]):
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raise ValueError("Missing required Langfuse credentials")
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# Initialize Langfuse client
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self.langfuse_client = Langfuse(
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public_key=self.langfuse.public_key,
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secret_key=self.langfuse.secret_key,
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host=self.langfuse.host
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)
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# Initialize CallbackHandler
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self.langfuse_handler = CallbackHandler(
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public_key=self.langfuse.public_key,
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secret_key=self.langfuse.secret_key,
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host=self.langfuse.host
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)
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logger.info("Langfuse client and handler initialized successfully")
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except ValueError as e:
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logger.warning(f"Langfuse configuration error: {e}. Disabling Langfuse.")
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self.langfuse.enabled = False
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except Exception as e:
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logger.error(f"Failed to initialize Langfuse: {e}")
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self.langfuse.enabled = False
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def _start_watcher(self):
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def watch_config():
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for changes in watch('config/application.yml'):
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for change in changes:
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if change[0] == Change.modified:
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logger.info("Configuration file modified, reloading settings...")
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try:
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self.llm = LLMConfig()
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self._validate()
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logger.info("Configuration reloaded successfully")
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except Exception as e:
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logger.error(f"Error reloading configuration: {e}")
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Thread(target=watch_config, daemon=True).start()
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# Create a single, validated instance of the settings to be imported by other modules.
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try:
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settings = Settings()
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except ValueError as e:
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logger.error(f"FATAL: {e}")
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logger.error("Application shutting down due to configuration error.")
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sys.exit(1) |