mirror of
https://github.com/blakeblackshear/frigate.git
synced 2026-06-21 03:41:55 +03:00
Make azure a subclass of openai
This commit is contained in:
Nicolas Mowen
parent
3ca97ed3d0
commit
d7683fd797
@ -1,28 +1,39 @@
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"""Azure OpenAI Provider for Frigate AI."""
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"""Azure OpenAI Provider for Frigate AI.
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Azure OpenAI exposes the same chat completions API as OpenAI once the
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client is constructed, so this provider inherits all transport, streaming,
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reasoning, and tool-calling logic from :class:`OpenAIClient` and only
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overrides what is genuinely Azure-specific:
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- Client construction: parses ``api-version`` out of the configured
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``base_url`` query string and instantiates :class:`openai.AzureOpenAI`
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with ``azure_endpoint`` instead of ``base_url``.
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- Context size: Azure does not expose a per-model ``max_model_len`` field
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reliably, so we keep the historical 128K default rather than the
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model-name heuristic used by OpenAI.
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"""
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import base64
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import json
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import logging
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from typing import Any, AsyncGenerator, Optional
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from typing import Optional
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from urllib.parse import parse_qs, urlparse
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from openai import AzureOpenAI
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from frigate.config import GenAIProviderEnum
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from frigate.genai import GenAIClient, register_genai_provider
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from frigate.genai.plugins.openai import _stats_from_openai_usage
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from frigate.genai import register_genai_provider
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from frigate.genai.plugins.openai import OpenAIClient
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logger = logging.getLogger(__name__)
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@register_genai_provider(GenAIProviderEnum.azure_openai)
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class OpenAIClient(GenAIClient):
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class AzureOpenAIClient(OpenAIClient):
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"""Generative AI client for Frigate using Azure OpenAI."""
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provider: AzureOpenAI
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provider: AzureOpenAI # type: ignore[assignment]
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def _init_provider(self) -> AzureOpenAI | None:
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"""Initialize the client."""
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def _init_provider(self) -> Optional[AzureOpenAI]:
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"""Initialize the AzureOpenAI client from the configured base_url."""
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try:
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parsed_url = urlparse(self.genai_config.base_url or "")
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query_params = parse_qs(parsed_url.query)
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@ -32,7 +43,6 @@ class OpenAIClient(GenAIClient):
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if not api_version:
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logger.warning("Azure OpenAI url is missing API version.")
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return None
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except Exception as e:
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logger.warning("Error parsing Azure OpenAI url: %s", str(e))
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return None
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@ -43,275 +53,6 @@ class OpenAIClient(GenAIClient):
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azure_endpoint=azure_endpoint,
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)
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def _send(
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self,
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prompt: str,
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images: list[bytes],
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response_format: Optional[dict] = None,
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) -> Optional[str]:
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"""Submit a request to Azure OpenAI."""
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encoded_images = [base64.b64encode(image).decode("utf-8") for image in images]
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try:
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request_params = {
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"model": self.genai_config.model,
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"messages": [
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{
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"role": "user",
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"content": [{"type": "text", "text": prompt}]
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+ [
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{
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"type": "image_url",
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"image_url": {
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"url": f"data:image/jpeg;base64,{image}",
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"detail": "low",
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},
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}
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for image in encoded_images
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],
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},
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],
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"timeout": self.timeout,
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**self.genai_config.runtime_options,
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}
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if response_format:
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request_params["response_format"] = response_format
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result = self.provider.chat.completions.create(**request_params)
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except Exception as e:
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logger.warning("Azure OpenAI returned an error: %s", str(e))
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return None
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if len(result.choices) > 0:
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return str(result.choices[0].message.content.strip())
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return None
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def list_models(self) -> list[str]:
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"""Return available model IDs from Azure OpenAI."""
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try:
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return sorted(m.id for m in self.provider.models.list().data)
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except Exception as e:
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logger.warning("Failed to list Azure OpenAI models: %s", e)
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return []
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def get_context_size(self) -> int:
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"""Get the context window size for Azure OpenAI."""
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"""Azure does not reliably surface per-model context size; use 128K."""
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return 128000
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def chat_with_tools(
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self,
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messages: list[dict[str, Any]],
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tools: Optional[list[dict[str, Any]]] = None,
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tool_choice: Optional[str] = "auto",
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) -> dict[str, Any]:
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try:
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openai_tool_choice = None
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if tool_choice:
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if tool_choice == "none":
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openai_tool_choice = "none"
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elif tool_choice == "auto":
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openai_tool_choice = "auto"
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elif tool_choice == "required":
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openai_tool_choice = "required"
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request_params = {
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"model": self.genai_config.model,
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"messages": messages,
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"timeout": self.timeout,
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**self.genai_config.runtime_options,
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}
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if tools:
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request_params["tools"] = tools
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if openai_tool_choice is not None:
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request_params["tool_choice"] = openai_tool_choice
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result = self.provider.chat.completions.create(**request_params) # type: ignore[call-overload]
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if (
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result is None
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or not hasattr(result, "choices")
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or len(result.choices) == 0
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):
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return {
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"content": None,
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"tool_calls": None,
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"finish_reason": "error",
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}
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choice = result.choices[0]
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message = choice.message
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content = message.content.strip() if message.content else None
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tool_calls = None
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if message.tool_calls:
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tool_calls = []
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for tool_call in message.tool_calls:
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try:
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arguments = json.loads(tool_call.function.arguments)
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except (json.JSONDecodeError, AttributeError) as e:
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logger.warning(
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f"Failed to parse tool call arguments: {e}, "
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f"tool: {tool_call.function.name if hasattr(tool_call.function, 'name') else 'unknown'}"
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)
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arguments = {}
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tool_calls.append(
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{
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"id": tool_call.id if hasattr(tool_call, "id") else "",
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"name": tool_call.function.name
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if hasattr(tool_call.function, "name")
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else "",
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"arguments": arguments,
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}
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)
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finish_reason = "error"
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if hasattr(choice, "finish_reason") and choice.finish_reason:
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finish_reason = choice.finish_reason
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elif tool_calls:
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finish_reason = "tool_calls"
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elif content:
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finish_reason = "stop"
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return {
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"content": content,
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"tool_calls": tool_calls,
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"finish_reason": finish_reason,
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}
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except Exception as e:
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logger.warning("Azure OpenAI returned an error: %s", str(e))
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return {
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"content": None,
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"tool_calls": None,
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"finish_reason": "error",
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}
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async def chat_with_tools_stream(
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self,
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messages: list[dict[str, Any]],
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tools: Optional[list[dict[str, Any]]] = None,
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tool_choice: Optional[str] = "auto",
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) -> AsyncGenerator[tuple[str, Any], None]:
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"""
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Stream chat with tools; yields content deltas then final message.
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Implements streaming function calling/tool usage for Azure OpenAI models.
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"""
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try:
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openai_tool_choice = None
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if tool_choice:
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if tool_choice == "none":
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openai_tool_choice = "none"
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elif tool_choice == "auto":
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openai_tool_choice = "auto"
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elif tool_choice == "required":
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openai_tool_choice = "required"
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request_params = {
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"model": self.genai_config.model,
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"messages": messages,
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"timeout": self.timeout,
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"stream": True,
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"stream_options": {"include_usage": True},
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**self.genai_config.runtime_options,
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}
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if tools:
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request_params["tools"] = tools
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if openai_tool_choice is not None:
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request_params["tool_choice"] = openai_tool_choice
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# Use streaming API
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content_parts: list[str] = []
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tool_calls_by_index: dict[int, dict[str, Any]] = {}
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finish_reason = "stop"
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usage_stats: Optional[dict[str, Any]] = None
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stream = self.provider.chat.completions.create(**request_params) # type: ignore[call-overload]
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for chunk in stream:
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chunk_usage = getattr(chunk, "usage", None)
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if chunk_usage is not None:
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usage_stats = _stats_from_openai_usage(chunk_usage)
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if not chunk or not chunk.choices:
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continue
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choice = chunk.choices[0]
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delta = choice.delta
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# Check for finish reason
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if choice.finish_reason:
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finish_reason = choice.finish_reason
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# Extract content deltas
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if delta.content:
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content_parts.append(delta.content)
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yield ("content_delta", delta.content)
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# Extract tool calls
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if delta.tool_calls:
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for tc in delta.tool_calls:
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idx = tc.index
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fn = tc.function
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if idx not in tool_calls_by_index:
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tool_calls_by_index[idx] = {
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"id": tc.id or "",
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"name": fn.name if fn and fn.name else "",
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"arguments": "",
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}
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t = tool_calls_by_index[idx]
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if tc.id:
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t["id"] = tc.id
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if fn and fn.name:
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t["name"] = fn.name
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if fn and fn.arguments:
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t["arguments"] += fn.arguments
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# Build final message
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full_content = "".join(content_parts).strip() or None
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# Convert tool calls to list format
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tool_calls_list = None
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if tool_calls_by_index:
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tool_calls_list = []
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for tc in tool_calls_by_index.values():
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try:
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# Parse accumulated arguments as JSON
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parsed_args = json.loads(tc["arguments"])
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except (json.JSONDecodeError, Exception):
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parsed_args = tc["arguments"]
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tool_calls_list.append(
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{
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"id": tc["id"],
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"name": tc["name"],
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"arguments": parsed_args,
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}
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)
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finish_reason = "tool_calls"
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if usage_stats is not None:
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yield ("stats", usage_stats)
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yield (
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"message",
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{
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"content": full_content,
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"tool_calls": tool_calls_list,
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"finish_reason": finish_reason,
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},
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)
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except Exception as e:
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logger.warning("Azure OpenAI streaming returned an error: %s", str(e))
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yield (
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"message",
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{
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"content": None,
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"tool_calls": None,
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"finish_reason": "error",
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},
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)
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