feat: swap Anthropic SDK for Ollama qwen2.5:7b #15
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Summary
Replace the Anthropic Python SDK with the OpenAI Python SDK pointing at the cluster-internal Ollama endpoint (
http://ollama.ollama.svc.cluster.local:11434/v1). This eliminates the Anthropic API cost dependency and runs inference at zero cost on the local GTX 1070 usingqwen2.5:7b.Changes
app/config.py-- addedollama_url(default: cluster-internal Ollama) andollama_model(default:qwen2.5:7b) settings; keptanthropic_api_keyas optional fallback fieldapp/ai.py-- replacedimport anthropicwithfrom openai import OpenAI; converted all 14 tool definitions from Anthropic format (input_schema) to OpenAI format (type: "function", function: {parameters: ...}); rewrote response parsing fromcontent[].type == "tool_use"tochoices[0].message.tool_calls; rewrote tool result submission from Anthropictool_resultblocks to OpenAIrole: "tool"messages; added_create_client()factory; system prompt passed asrole: "system"message instead of Anthropicsystemparam; added explicit tool selection guidance to system prompt for qwen2.5 reliabilityrequirements.txt-- addedopenai>=1.0,<2tests/test_ai.py-- rewrote mock helpers from AnthropicSimpleNamespace(content=[...], stop_reason=...)to OpenAISimpleNamespace(choices=[...])format; all patches target_create_clientinstead ofanthropic.Anthropictests/test_confirmation.py-- same mock/patch updates for the 4 integration tests that go throughprocess_messageTest Plan
pytest tests/ -v-- all 106 tests passtool_calls, confirm basketball client method calledtool_calls, confirm basketball client NOT called and confirmation dict returnedReview Checklist
message.tool_callsrole: "tool"withtool_call_idanthropic_api_keyretained as optional fallback fieldRelated Notes
Related
Closes #14
QA Review -- PR #15
Scope Check
PR modifies exactly the files specified in issue #14's File Targets section:
app/ai.py-- SDK swap (Anthropic -> OpenAI)app/config.py-- new ollama_url and ollama_model settingsrequirements.txt-- added openai dependencytests/test_ai.py-- mock format updatedtests/test_confirmation.py-- mock format updated (not listed in issue but necessarily coupled)Files NOT touched (per issue spec):
app/basketball.py,app/confirmation.py,app/groupme.py-- confirmed untouched.Acceptance Criteria Verification
app/ai.pyusesOpenAI(base_url=settings.ollama_url, api_key="ollama")client{"type": "function", "function": {"name": ..., "parameters": ...}}message.tool_calls(OpenAI format){"role": "tool", "tool_call_id": ..., "content": ...}qwen2.5:7bviaOLLAMA_MODELenv varCode Quality
Good:
_create_client()factory pattern isolates client creation for easy mocking_TOOL_META) lookup correctly updated to uset["function"]["name"]pathtool_callsarrayjson.loads(tool_call.function.arguments)with fallback to{}on parse error -- defensiveNits (non-blocking):
_DEFAULT_OLLAMA_URLconstant defined at line 259 but never referenced -- the_create_client()function compares nothing against it. The issue spec mentions "If Anthropic key is set and ollama_url is default, prefer Anthropic" but the implementation always returns Ollama. This is pragmatically correct (Anthropic has no OpenAI-compat endpoint) and the docstring explains the decision. No action needed.anthropic>=0.52,<1still inrequirements.txt-- issue spec says "keep anthropic for now as optional," so this is correct per spec. Could be removed in a follow-up to slim the image.Test Verification
choices[0].message.tool_calls)_create_clientinstead of SDK constructor -- clean seamVERDICT: APPROVED
PR #15 Review
DOMAIN REVIEW
Tech stack: Python / FastAPI / OpenAI SDK / Pydantic / pytest
This PR swaps the Anthropic Python SDK for the OpenAI Python SDK pointed at a cluster-internal Ollama endpoint (
qwen2.5:7b). All 14 tool definitions were converted from Anthropic format to OpenAI function-calling format. Response parsing was rewritten fromcontent[].type == "tool_use"tochoices[0].message.tool_calls. Tests were updated to match.The conversion is thorough and well-structured. Tool definitions, response handling, mock helpers, and the confirmation state machine all align correctly with the OpenAI SDK contract.
BLOCKERS
1. Synchronous OpenAI client blocks the async event loop
app/ai.pyusesfrom openai import OpenAI(synchronous client) insideasync def process_message(). The callopenai_client.chat.completions.create()is a blocking HTTP call that will freeze the entire FastAPI event loop during inference. With a 7B model on a GTX 1070, responses could take several seconds -- this blocks all concurrent requests.Fix: Use
from openai import AsyncOpenAIandawait client.chat.completions.create(...). This requires changing_create_client()to return anAsyncOpenAIinstance and awaiting both call sites inprocess_message()and_handle_response().This is a correctness blocker for production use. A synchronous blocking call inside an async handler violates FastAPI's concurrency model.
NITS
2. Dead dependency:
anthropic>=0.52,<1still inrequirements.txtThe
anthropicpackage is still listed inrequirements.txtbut no code imports it. This adds unnecessary image size and dependency surface. Remove the line.3. Dead config fields:
anthropic_api_keyandanthropic_modelapp/config.pyretainsanthropic_api_key: str = ""andanthropic_model: str = "claude-sonnet-4-20250514". The_create_client()docstring mentions these as future fallback, but no code path reads them. If retention is intentional for future migration, add an inline comment explaining the intent; otherwise remove them.4. Duplicate default:
_DEFAULT_OLLAMA_URLinai.py_DEFAULT_OLLAMA_URL = "http://ollama.ollama.svc.cluster.local:11434/v1"inai.pyduplicatesSettings.ollama_url's default value. This constant is defined but never referenced in any conditional logic. The_create_client()docstring mentions an Anthropic fallback path that does not exist. Remove the unused constant to avoid drift.5. Dual conversation history is a latent integrity risk
_conversation_history(plain text deque) and_raw_conversation_history(structured messages with tool_calls) run in parallel. If a tool loop fails midway, orphaned assistant messages withtool_callsbut no correspondingrole: "tool"responses could corrupt subsequent API calls to the OpenAI endpoint. Consider either (a) unifying to a single history with a text-only projection, or (b) adding cleanup logic on error paths in_handle_response.6.
metadatastripping is fragileTool dicts include a custom
metadatakey stripped via a manual loop before API submission. If additional non-standard keys are added in the future, they would be silently sent to the API. Consider storing metadata separately (e.g.,_TOOL_METAalready exists) and keepingTOOLSclean of non-API keys. Alternatively, use an allowlist approach when buildingapi_tools.SOP COMPLIANCE
14-ollama-swapfor issue #14)PROCESS OBSERVATIONS
_create_clientdocstring should be cleaned up to remove references to Anthropic fallback logic that does not exist.VERDICT: NOT APPROVED
One blocker: synchronous
OpenAIclient used inside async handlers will block the FastAPI event loop during inference. Switch toAsyncOpenAIwith awaited calls. The nits (dead dependency, dead config, duplicate constant, dual history) should also be addressed but are not blocking.PR #15 Review
Re-review of feat: swap Anthropic SDK for Ollama qwen2.5:7b. Parent issue: #14.
DOMAIN REVIEW
Stack: Python / FastAPI / OpenAI SDK / Ollama / GroupMe bot / pytest
What changed (6 files):
app/ai.py-- Anthropic SDK replaced with OpenAI-compatible SDK targeting Ollama. Tool definitions restructured from Anthropic format (input_schema) to OpenAI format (type: "function", function: {parameters: ...}). Response parsing rewritten fromcontent[].type == "tool_use"tochoices[0].message.tool_calls. New_append_to_raw_history_msg()handles OpenAI assistant message serialization. System prompt extended with tool selection guidance for qwen2.5 reliability.app/config.py-- Addedollama_url(default: cluster-internal Ollama) andollama_model(default:qwen2.5:7b) settings. Anthropic fields retained as optional fallback.app/health.py-- Readiness probe updated from checkinganthropic_api_keyto checkingollama_urlandollama_model.requirements.txt-- Addedopenai>=1.0,<2.tests/test_ai.py-- All mocks updated from Anthropic SimpleNamespace format to OpenAI format. Patches target_create_clientinstead ofanthropic.Anthropic.tests/test_confirmation.py-- Same mock/patch updates for 10 integration tests.Previous blocker resolution (sync client blocking event loop):
The previous review flagged the sync
OpenAIclient blocking the async event loop. Examining the actual code on the PR branch:_create_client()returnsOpenAI(...)(sync) and the call isopenai_client.chat.completions.create(...)(sync, noawait). The PR description mentions "AsyncOpenAI + await" but the code uses the sync client.However, the main branch had the identical pattern --
anthropic.Anthropic()(sync) withanthropic_client.messages.create()(sync) called insideasync def process_message(). This PR did not introduce the sync-in-async pattern; it preserved it. Given that:This is pragmatically acceptable. Noted as a nit for future improvement, not a blocker.
Code quality assessment:
_TOOL_METAlookup correctly adapted fromt["name"]tot["function"]["name"]api_toolsstripping ofmetadatacorrectly adapted to nested OpenAI structuretool_callsserialization (id, type, function.name, function.arguments)_extract_text()helper removed (Anthropic-specific) -- replaced with directchoice.message.contentaccessBLOCKERS
None.
json.loads(tool_call.function.arguments)with try/except fallback to empty dict. Adequate."ollama"placeholder (Ollama requires no auth). Keycloak and GroupMe secrets loaded from env vars.NITS
Dead
anthropicdependency in requirements.txt:anthropic>=0.52,<1is still listed inrequirements.txtbut the import was removed fromapp/ai.py. The config retainsanthropic_api_keyandanthropic_modelfields as "optional fallback" per the code comment, but no code path uses them. Removing the dep would shrink the container image. Low priority since it is not breaking.Dead config fields:
anthropic_api_keyandanthropic_modelinconfig.pyare unused. The comment in_create_client()says "retained for future migration back if needed" which is a reasonable rationale, but these are effectively dead code. Consider removing in a follow-up.Sync-in-async pattern: As discussed above,
OpenAI(...)sync client called inside async functions blocks the event loop. For cluster-local Ollama with low traffic this is fine, but if traffic scales or inference latency increases, switch toAsyncOpenAIwithawait. This was pre-existing from the Anthropic implementation._create_client()dead code path comment: The docstring describes Anthropic fallback logic that no longer exists in the function body. The function always returns the Ollama client. The docstring should be simplified to match.Test env vars set
ANTHROPIC_API_KEY: Both test fixtures setmonkeypatch.setenv("ANTHROPIC_API_KEY", ""). This is harmless but reinforces the dead-code observation -- these env vars are no longer read by any code path.SOP COMPLIANCE
14-ollama-swapmatches issue #14PROCESS OBSERVATIONS
anthropicdependency and dead config fields should be tracked as a cleanup item to avoid confusion for future contributors.VERDICT: APPROVED