mirror of
https://github.com/The-Pocket/PocketFlow-Tutorial-Codebase-Knowledge.git
synced 2026-08-29 08:34:31 +08:00
update call_llm() to use environ variable for LLM
This commit is contained in:
Mark Van de Vyver
+64
-192
@@ -2,6 +2,7 @@ from google import genai
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import os
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import logging
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import json
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import requests
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from datetime import datetime
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# Configure logging
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@@ -24,207 +25,78 @@ logger.addHandler(file_handler)
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# Simple cache configuration
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cache_file = "llm_cache.json"
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def call_llm(prompt, use_cache: bool = True) -> str:
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"""
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Call an LLM provider based on environment variables.
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Environment variables:
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- LLM_PROVIDER: "OLLAMA" or "XAI"
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- <provider>_MODEL: Model name (e.g., OLLAMA_MODEL, XAI_MODEL)
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- <provider>_BASE_URL: Base URL without endpoint (e.g., OLLAMA_BASE_URL, XAI_BASE_URL)
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- <provider>_API_KEY: API key (e.g., OLLAMA_API_KEY, XAI_API_KEY; optional for providers that don't require it)
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The endpoint /v1/chat/completions will be appended to the base URL.
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"""
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logger.info(f"PROMPT: {prompt}") # log the prompt
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# By default, we Google Gemini 2.5 pro, as it shows great performance for code understanding
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def call_llm(prompt: str, use_cache: bool = True) -> str:
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# Log the prompt
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logger.info(f"PROMPT: {prompt}")
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# Read the provider from environment variable
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provider = os.environ.get("LLM_PROVIDER")
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if not provider:
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raise ValueError("LLM_PROVIDER environment variable is required")
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# Check cache if enabled
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if use_cache:
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# Load cache from disk
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cache = {}
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if os.path.exists(cache_file):
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try:
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with open(cache_file, "r", encoding="utf-8") as f:
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cache = json.load(f)
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except:
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logger.warning(f"Failed to load cache, starting with empty cache")
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# Construct the names of the other environment variables
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model_var = f"{provider}_MODEL"
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base_url_var = f"{provider}_BASE_URL"
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api_key_var = f"{provider}_API_KEY"
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# Return from cache if exists
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if prompt in cache:
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logger.info(f"RESPONSE: {cache[prompt]}")
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return cache[prompt]
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# Read the provider-specific variables
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model = os.environ.get(model_var)
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base_url = os.environ.get(base_url_var)
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api_key = os.environ.get(api_key_var, "") # API key is optional, default to empty string
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# # Call the LLM if not in cache or cache disabled
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# client = genai.Client(
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# vertexai=True,
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# # TODO: change to your own project id and location
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# project=os.getenv("GEMINI_PROJECT_ID", "your-project-id"),
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# location=os.getenv("GEMINI_LOCATION", "us-central1")
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# )
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# Validate required variables
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if not model:
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raise ValueError(f"{model_var} environment variable is required")
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if not base_url:
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raise ValueError(f"{base_url_var} environment variable is required")
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# You can comment the previous line and use the AI Studio key instead:
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client = genai.Client(
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api_key=os.getenv("GEMINI_API_KEY", ""),
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)
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model = os.getenv("GEMINI_MODEL", "gemini-2.5-pro")
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# model = os.getenv("GEMINI_MODEL", "gemini-2.5-flash")
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response = client.models.generate_content(model=model, contents=[prompt])
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response_text = response.text
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# Append the endpoint to the base URL
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url = f"{base_url}/v1/chat/completions"
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# Log the response
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logger.info(f"RESPONSE: {response_text}")
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# Configure headers and payload based on provider
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headers = {
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"Content-Type": "application/json",
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}
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if api_key: # Only add Authorization header if API key is provided
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headers["Authorization"] = f"Bearer {api_key}"
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# Update cache if enabled
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if use_cache:
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# Load cache again to avoid overwrites
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cache = {}
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if os.path.exists(cache_file):
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try:
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with open(cache_file, "r", encoding="utf-8") as f:
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cache = json.load(f)
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except:
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pass
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payload = {
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"model": model,
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"messages": [{"role": "user", "content": prompt}],
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"temperature": 0.7,
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}
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# Add to cache and save
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cache[prompt] = response_text
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try:
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response = requests.post(url, headers=headers, json=payload)
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response_json = response.json() # Log the response
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logger.info("RESPONSE:\n%s", json.dumps(response_json, indent=2))
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#logger.info(f"RESPONSE: {response.json()}")
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response.raise_for_status()
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return response.json()["choices"][0]["message"]["content"]
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except requests.exceptions.HTTPError as e:
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error_message = f"HTTP error occurred: {e}"
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try:
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with open(cache_file, "w", encoding="utf-8") as f:
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json.dump(cache, f)
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except Exception as e:
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logger.error(f"Failed to save cache: {e}")
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return response_text
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# # Use Azure OpenAI
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# def call_llm(prompt, use_cache: bool = True):
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# from openai import AzureOpenAI
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# endpoint = "https://<azure openai name>.openai.azure.com/"
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# deployment = "<deployment name>"
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# subscription_key = "<azure openai key>"
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# api_version = "<api version>"
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# client = AzureOpenAI(
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# api_version=api_version,
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# azure_endpoint=endpoint,
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# api_key=subscription_key,
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# )
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# r = client.chat.completions.create(
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# model=deployment,
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# messages=[{"role": "user", "content": prompt}],
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# response_format={
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# "type": "text"
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# },
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# max_completion_tokens=40000,
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# reasoning_effort="medium",
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# store=False
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# )
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# return r.choices[0].message.content
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# # Use Anthropic Claude 3.7 Sonnet Extended Thinking
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# def call_llm(prompt, use_cache: bool = True):
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# from anthropic import Anthropic
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# client = Anthropic(api_key=os.environ.get("ANTHROPIC_API_KEY", "your-api-key"))
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# response = client.messages.create(
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# model="claude-3-7-sonnet-20250219",
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# max_tokens=21000,
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# thinking={
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# "type": "enabled",
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# "budget_tokens": 20000
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# },
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# messages=[
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# {"role": "user", "content": prompt}
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# ]
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# )
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# return response.content[1].text
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# # Use OpenAI o1
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# def call_llm(prompt, use_cache: bool = True):
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# from openai import OpenAI
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# client = OpenAI(api_key=os.environ.get("OPENAI_API_KEY", "your-api-key"))
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# r = client.chat.completions.create(
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# model="o1",
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# messages=[{"role": "user", "content": prompt}],
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# response_format={
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# "type": "text"
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# },
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# reasoning_effort="medium",
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# store=False
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# )
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# return r.choices[0].message.content
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# Use OpenRouter API
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# def call_llm(prompt: str, use_cache: bool = True) -> str:
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# import requests
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# # Log the prompt
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# logger.info(f"PROMPT: {prompt}")
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# # Check cache if enabled
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# if use_cache:
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# # Load cache from disk
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# cache = {}
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# if os.path.exists(cache_file):
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# try:
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# with open(cache_file, "r", encoding="utf-8") as f:
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# cache = json.load(f)
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# except:
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# logger.warning(f"Failed to load cache, starting with empty cache")
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# # Return from cache if exists
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# if prompt in cache:
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# logger.info(f"RESPONSE: {cache[prompt]}")
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# return cache[prompt]
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# # OpenRouter API configuration
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# api_key = os.getenv("OPENROUTER_API_KEY", "")
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# model = os.getenv("OPENROUTER_MODEL", "google/gemini-2.0-flash-exp:free")
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# headers = {
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# "Authorization": f"Bearer {api_key}",
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# }
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# data = {
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# "model": model,
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# "messages": [{"role": "user", "content": prompt}]
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# }
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# response = requests.post(
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# "https://openrouter.ai/api/v1/chat/completions",
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# headers=headers,
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# json=data
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# )
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# if response.status_code != 200:
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# error_msg = f"OpenRouter API call failed with status {response.status_code}: {response.text}"
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# logger.error(error_msg)
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# raise Exception(error_msg)
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# try:
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# response_text = response.json()["choices"][0]["message"]["content"]
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# except Exception as e:
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# error_msg = f"Failed to parse OpenRouter response: {e}; Response: {response.text}"
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# logger.error(error_msg)
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# raise Exception(error_msg)
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# # Log the response
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# logger.info(f"RESPONSE: {response_text}")
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# # Update cache if enabled
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# if use_cache:
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# # Load cache again to avoid overwrites
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# cache = {}
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# if os.path.exists(cache_file):
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# try:
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# with open(cache_file, "r", encoding="utf-8") as f:
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# cache = json.load(f)
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# except:
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# pass
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# # Add to cache and save
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# cache[prompt] = response_text
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# try:
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# with open(cache_file, "w", encoding="utf-8") as f:
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# json.dump(cache, f)
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# except Exception as e:
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# logger.error(f"Failed to save cache: {e}")
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# return response_text
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error_details = response.json().get("error", "No additional details")
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error_message += f" (Details: {error_details})"
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except:
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pass
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raise Exception(error_message)
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except requests.exceptions.ConnectionError:
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raise Exception(f"Failed to connect to {provider} API. Check your network connection.")
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except requests.exceptions.Timeout:
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raise Exception(f"Request to {provider} API timed out.")
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except requests.exceptions.RequestException as e:
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raise Exception(f"An error occurred while making the request to {provider}: {e}")
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except ValueError:
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raise Exception(f"Failed to parse response as JSON from {provider}. The server might have returned an invalid response.")
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if __name__ == "__main__":
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test_prompt = "Hello, how are you?"
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