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import os
import ollama
import logging
import sys
# Configure logging for stdout only
logging.basicConfig(
level=logging.INFO,
format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
stream=sys.stdout
)
logger = logging.getLogger(__name__)
class QueryRewriter:
def __init__(self):
self.model = os.getenv('OLLAMA_MODEL', "phi3")
self.ollama_host = os.getenv('OLLAMA_HOST', 'http://ollama:11434')
def generate(self, prompt):
try:
response = ollama.chat(
model=self.model,
messages=[{"role": "user", "content": prompt}]
)
return response['message']['content']
except Exception as e:
logger.error(f"Error generating response: {e}")
return f"Error: {str(e)}"
def rewrite_cot(self, query):
prompt = f"""
Rewrite the following query using Chain-of-Thought reasoning:
Query: {query}
Rewritten query:
"""
rewritten_query = self.generate(prompt)
if rewritten_query.startswith("Error:"):
logger.error(f"Error in CoT rewriting: {rewritten_query}")
return query, prompt # Return original query if rewriting fails
return rewritten_query, prompt
def rewrite_react(self, query):
prompt = f"""
Rewrite the following query using the ReAct framework (Reasoning and Acting):
Query: {query}
Thought 1:
Action 1:
Observation 1:
Thought 2:
Action 2:
Observation 2:
Final rewritten query:
"""
rewritten_query = self.generate(prompt)
if rewritten_query.startswith("Error:"):
logger.error(f"Error in ReAct rewriting: {rewritten_query}")
return query, prompt # Return original query if rewriting fails
return rewritten_query, prompt |