1"""LLM provider implementations.

2

3 This module provides implementations for various LLM providers.

4 Supports both direct instantiation and dataknobs Config-based factory pattern.

5"""

6

7 import os

8 import json

9 import hashlib

10 from typing import Any, Dict, List, Union, AsyncIterator, Type, Optional

11

12 from .base import (

13 LLMConfig, LLMMessage, LLMResponse, LLMStreamResponse,

14 AsyncLLMProvider, SyncLLMProvider, ModelCapability,

15 LLMAdapter, normalize_llm_config

16)

17

18# Import prompt builder types - clean one-way dependency (llm depends on prompts)

19 from dataknobs_llm.prompts import AsyncPromptBuilder

20

21

22 class SyncProviderAdapter:

23 """Sync adapter for async LLM providers."""

24

25 def __init__(self, async_provider: AsyncLLMProvider):

26 """Initialize with async provider.

27

28 Args:

29 async_provider: The async provider to wrap.

30 """

31 self.async_provider = async_provider

32

33 def initialize(self) -> None:

34 """Initialize the provider synchronously."""

35 import asyncio

36 try:

37 loop = asyncio.get_event_loop()

38 except RuntimeError:

39 loop = asyncio.new_event_loop()

40 asyncio.set_event_loop(loop)

41

42 return loop.run_until_complete(self.async_provider.initialize())

43

44 def close(self) -> None:

45 """Close the provider synchronously."""

46 import asyncio

47 try:

48 loop = asyncio.get_event_loop()

49 except RuntimeError:

50 loop = asyncio.new_event_loop()

51 asyncio.set_event_loop(loop)

52

53 return loop.run_until_complete(self.async_provider.close())

54

55 def complete(

56 self,

57 messages: Union[str, List[LLMMessage]],

58 **kwargs

59 ) -> LLMResponse:

60 """Generate completion synchronously."""

61 import asyncio

62 try:

63 loop = asyncio.get_event_loop()

64 except RuntimeError:

65 loop = asyncio.new_event_loop()

66 asyncio.set_event_loop(loop)

67

68 return loop.run_until_complete(self.async_provider.complete(messages, **kwargs))

69

70 def stream(

71 self,

72 messages: Union[str, List[LLMMessage]],

73 **kwargs

74 ):

75 """Stream completion synchronously."""

76 import asyncio

77 try:

78 loop = asyncio.get_event_loop()

79 except RuntimeError:

80 loop = asyncio.new_event_loop()

81 asyncio.set_event_loop(loop)

82

83 async def _stream():

84 async for chunk in self.async_provider.stream_complete(messages, **kwargs):

85 yield chunk

86

87 # Convert async generator to sync generator

88 async_gen = _stream()

89 try:

90 while True:

91 try:

92 yield loop.run_until_complete(async_gen.__anext__())

93 except StopAsyncIteration:

94 break

95 finally:

96 loop.run_until_complete(async_gen.aclose())

97

98 def embed(

99 self,

100 texts: Union[str, List[str]],

101 **kwargs

102 ) -> Union[List[float], List[List[float]]]:

103 """Generate embeddings synchronously."""

104 import asyncio

105 try:

106 loop = asyncio.get_event_loop()

107 except RuntimeError:

108 loop = asyncio.new_event_loop()

109 asyncio.set_event_loop(loop)

110

111 return loop.run_until_complete(self.async_provider.embed(texts, **kwargs))

112

113 def function_call(

114 self,

115 messages: List[LLMMessage],

116 functions: List[Dict[str, Any]],

117 **kwargs

118 ) -> LLMResponse:

119 """Make function call synchronously."""

120 import asyncio

121 try:

122 loop = asyncio.get_event_loop()

123 except RuntimeError:

124 loop = asyncio.new_event_loop()

125 asyncio.set_event_loop(loop)

126

127 return loop.run_until_complete(self.async_provider.function_call(messages, functions, **kwargs))

128

129 def validate_model(self) -> bool:

130 """Validate model synchronously."""

131 import asyncio

132 try:

133 loop = asyncio.get_event_loop()

134 except RuntimeError:

135 loop = asyncio.new_event_loop()

136 asyncio.set_event_loop(loop)

137

138 return loop.run_until_complete(self.async_provider.validate_model()) # type: ignore

139

140 def get_capabilities(self) -> List[ModelCapability]:

141 """Get capabilities synchronously."""

142 return self.async_provider.get_capabilities()

143

144 @property

145 def is_initialized(self) -> bool:

146 """Check if provider is initialized."""

147 return self.async_provider.is_initialized

148

149

150 class OpenAIAdapter(LLMAdapter):

151 """Adapter for OpenAI API format."""

152

153 def adapt_messages(self, messages: List[LLMMessage]) -> List[Dict[str, Any]]:

154 """Convert messages to OpenAI format."""

155 adapted = []

156 for msg in messages:

157 message = {

158 'role': msg.role,

159 'content': msg.content

160 }

161 if msg.name:

162 message['name'] = msg.name

163 if msg.function_call:

164 message['function_call'] = msg.function_call

165 adapted.append(message)

166 return adapted

167

168 def adapt_response(self, response: Any) -> LLMResponse:

169 """Convert OpenAI response to standard format."""

170 choice = response.choices[0]

171 message = choice.message

172

173 return LLMResponse(

174 content=message.content or '',

175 model=response.model,

176 finish_reason=choice.finish_reason,

177 usage={

178 'prompt_tokens': response.usage.prompt_tokens,

179 'completion_tokens': response.usage.completion_tokens,

180 'total_tokens': response.usage.total_tokens

181 } if response.usage else None,

182 function_call=message.function_call if hasattr(message, 'function_call') else None

183 )

184

185 def adapt_config(self, config: LLMConfig) -> Dict[str, Any]:

186 """Convert config to OpenAI parameters."""

187 params = {

188 'model': config.model,

189 'temperature': config.temperature,

190 'top_p': config.top_p,

191 'frequency_penalty': config.frequency_penalty,

192 'presence_penalty': config.presence_penalty,

193 }

194

195 if config.max_tokens:

196 params['max_tokens'] = config.max_tokens

197 if config.stop_sequences:

198 params['stop'] = config.stop_sequences

199 if config.seed:

200 params['seed'] = config.seed

201 if config.logit_bias:

202 params['logit_bias'] = config.logit_bias

203 if config.user_id:

204 params['user'] = config.user_id

205 if config.response_format == 'json':

206 params['response_format'] = {'type': 'json_object'}

207 if config.functions:

208 params['functions'] = config.functions

209 if config.function_call:

210 params['function_call'] = config.function_call

211

212 return params

213

214

215 class OpenAIProvider(AsyncLLMProvider):

216 """OpenAI LLM provider."""

217

218 def __init__(

219 self,

220 config: Union[LLMConfig, "Config", Dict[str, Any]],

221 prompt_builder: Optional[AsyncPromptBuilder] = None

222 ):

223 # Normalize config first

224 llm_config = normalize_llm_config(config)

225 super().__init__(llm_config, prompt_builder=prompt_builder)

226 self.adapter = OpenAIAdapter()

227

228 async def initialize(self) -> None:

229 """Initialize OpenAI client."""

230 try:

231 import openai

232

233 api_key = self.config.api_key or os.environ.get('OPENAI_API_KEY')

234 if not api_key:

235 raise ValueError("OpenAI API key not provided")

236

237 self._client = openai.AsyncOpenAI(

238 api_key=api_key,

239 base_url=self.config.api_base,

240 timeout=self.config.timeout

241 )

242 self._is_initialized = True

243 except ImportError as e:

244 raise ImportError("openai package not installed. Install with: pip install openai") from e

245

246 async def close(self) -> None:

247 """Close OpenAI client."""

248 if self._client:

249 await self._client.close() # type: ignore[unreachable]

250 self._is_initialized = False

251

252 async def validate_model(self) -> bool:

253 """Validate model availability."""

254 try:

255 # List available models

256 models = await self._client.models.list()

257 model_ids = [m.id for m in models.data]

258 return self.config.model in model_ids

259 except Exception:

260 return False

261

262 def get_capabilities(self) -> List[ModelCapability]:

263 """Get OpenAI model capabilities."""

264 capabilities = [

265 ModelCapability.TEXT_GENERATION,

266 ModelCapability.CHAT,

267 ModelCapability.STREAMING

268 ]

269

270 if 'gpt-4' in self.config.model or 'gpt-3.5' in self.config.model:

271 capabilities.extend([

272 ModelCapability.FUNCTION_CALLING,

273 ModelCapability.JSON_MODE

274 ])

275

276 if 'vision' in self.config.model:

277 capabilities.append(ModelCapability.VISION)

278

279 if 'embedding' in self.config.model:

280 capabilities.append(ModelCapability.EMBEDDINGS)

281

282 return capabilities

283

284 async def complete(

285 self,

286 messages: Union[str, List[LLMMessage]],

287 **kwargs

288 ) -> LLMResponse:

289 """Generate completion."""

290 if not self._is_initialized:

291 await self.initialize()

292

293 # Convert string to message list

294 if isinstance(messages, str):

295 messages = [LLMMessage(role='user', content=messages)]

296

297 # Add system prompt if configured

298 if self.config.system_prompt and messages[0].role != 'system':

299 messages.insert(0, LLMMessage(role='system', content=self.config.system_prompt))

300

301 # Adapt messages and config

302 adapted_messages = self.adapter.adapt_messages(messages)

303 params = self.adapter.adapt_config(self.config)

304 params.update(kwargs)

305

306 # Make API call

307 response = await self._client.chat.completions.create(

308 messages=adapted_messages,

309 **params

310 )

311

312 return self.adapter.adapt_response(response)

313

314 async def stream_complete(

315 self,

316 messages: Union[str, List[LLMMessage]],

317 **kwargs

318 ) -> AsyncIterator[LLMStreamResponse]:

319 """Generate streaming completion."""

320 if not self._is_initialized:

321 await self.initialize()

322

323 # Convert string to message list

324 if isinstance(messages, str):

325 messages = [LLMMessage(role='user', content=messages)]

326

327 # Add system prompt if configured

328 if self.config.system_prompt and messages[0].role != 'system':

329 messages.insert(0, LLMMessage(role='system', content=self.config.system_prompt))

330

331 # Adapt messages and config

332 adapted_messages = self.adapter.adapt_messages(messages)

333 params = self.adapter.adapt_config(self.config)

334 params['stream'] = True

335 params.update(kwargs)

336

337 # Stream API call

338 stream = await self._client.chat.completions.create(

339 messages=adapted_messages,

340 **params

341 )

342

343 async for chunk in stream:

344 if chunk.choices[0].delta.content:

345 yield LLMStreamResponse(

346 delta=chunk.choices[0].delta.content,

347 is_final=chunk.choices[0].finish_reason is not None,

348 finish_reason=chunk.choices[0].finish_reason

349 )

350

351 async def embed(

352 self,

353 texts: Union[str, List[str]],

354 **kwargs

355 ) -> Union[List[float], List[List[float]]]:

356 """Generate embeddings."""

357 if not self._is_initialized:

358 await self.initialize()

359

360 if isinstance(texts, str):

361 texts = [texts]

362 single = True

363 else:

364 single = False

365

366 response = await self._client.embeddings.create(

367 input=texts,

368 model=self.config.model or 'text-embedding-ada-002'

369 )

370

371 embeddings = [e.embedding for e in response.data]

372 return embeddings[0] if single else embeddings

373

374 async def function_call(

375 self,

376 messages: List[LLMMessage],

377 functions: List[Dict[str, Any]],

378 **kwargs

379 ) -> LLMResponse:

380 """Execute function calling."""

381 if not self._is_initialized:

382 await self.initialize()

383

384 # Add system prompt if configured

385 if self.config.system_prompt and messages[0].role != 'system':

386 messages.insert(0, LLMMessage(role='system', content=self.config.system_prompt))

387

388 # Adapt messages and config

389 adapted_messages = self.adapter.adapt_messages(messages)

390 params = self.adapter.adapt_config(self.config)

391 params['functions'] = functions

392 params['function_call'] = kwargs.get('function_call', 'auto')

393 params.update(kwargs)

394

395 # Make API call

396 response = await self._client.chat.completions.create(

397 messages=adapted_messages,

398 **params

399 )

400

401 return self.adapter.adapt_response(response)

402

403

404 class AnthropicProvider(AsyncLLMProvider):

405 """Anthropic Claude LLM provider.

406

407 Supports latest Anthropic features including:

408 - Native tools API (Claude 3+)

409 - Vision capabilities (Claude 3+)

410 - Streaming responses

411 """

412

413 def __init__(

414 self,

415 config: Union[LLMConfig, "Config", Dict[str, Any]],

416 prompt_builder: Optional[AsyncPromptBuilder] = None

417 ):

418 # Normalize config first

419 llm_config = normalize_llm_config(config)

420 super().__init__(llm_config, prompt_builder=prompt_builder)

421

422 async def initialize(self) -> None:

423 """Initialize Anthropic client."""

424 try:

425 import anthropic

426

427 api_key = self.config.api_key or os.environ.get('ANTHROPIC_API_KEY')

428 if not api_key:

429 raise ValueError("Anthropic API key not provided")

430

431 self._client = anthropic.AsyncAnthropic(

432 api_key=api_key,

433 base_url=self.config.api_base,

434 timeout=self.config.timeout

435 )

436 self._is_initialized = True

437 except ImportError as e:

438 raise ImportError("anthropic package not installed. Install with: pip install anthropic") from e

439

440 async def close(self) -> None:

441 """Close Anthropic client."""

442 if self._client:

443 await self._client.close() # type: ignore[unreachable]

444 self._is_initialized = False

445

446 async def validate_model(self) -> bool:

447 """Validate model availability."""

448 valid_models = [

449 'claude-3-opus', 'claude-3-sonnet', 'claude-3-haiku',

450 'claude-2.1', 'claude-2.0', 'claude-instant-1.2'

451 ]

452 return any(m in self.config.model for m in valid_models)

453

454 def get_capabilities(self) -> List[ModelCapability]:

455 """Get Anthropic model capabilities."""

456 capabilities = [

457 ModelCapability.TEXT_GENERATION,

458 ModelCapability.CHAT,

459 ModelCapability.STREAMING,

460 ModelCapability.CODE

461 ]

462

463 # Claude 3+ models support vision and tools

464 if 'claude-3' in self.config.model or 'claude-sonnet' in self.config.model or 'claude-opus' in self.config.model:

465 capabilities.extend([

466 ModelCapability.VISION,

467 ModelCapability.FUNCTION_CALLING

468 ])

469

470 return capabilities

471

472 async def complete(

473 self,

474 messages: Union[str, List[LLMMessage]],

475 **kwargs

476 ) -> LLMResponse:

477 """Generate completion."""

478 if not self._is_initialized:

479 await self.initialize()

480

481 # Convert to Anthropic format

482 if isinstance(messages, str):

483 prompt = messages

484 else:

485 # Build prompt from messages

486 prompt = ""

487 for msg in messages:

488 if msg.role == 'system':

489 prompt = msg.content + "\n\n" + prompt

490 elif msg.role == 'user':

491 prompt += f"\n\nHuman: {msg.content}"

492 elif msg.role == 'assistant':

493 prompt += f"\n\nAssistant: {msg.content}"

494 prompt += "\n\nAssistant:"

495

496 # Make API call

497 response = await self._client.messages.create(

498 model=self.config.model,

499 messages=[{"role": "user", "content": prompt}],

500 max_tokens=self.config.max_tokens or 1024,

501 temperature=self.config.temperature,

502 top_p=self.config.top_p,

503 stop_sequences=self.config.stop_sequences

504 )

505

506 return LLMResponse(

507 content=response.content[0].text,

508 model=response.model,

509 finish_reason=response.stop_reason,

510 usage={

511 'prompt_tokens': response.usage.input_tokens,

512 'completion_tokens': response.usage.output_tokens,

513 'total_tokens': response.usage.input_tokens + response.usage.output_tokens

514 } if hasattr(response, 'usage') else None

515 )

516

517 async def stream_complete(

518 self,

519 messages: Union[str, List[LLMMessage]],

520 **kwargs

521 ) -> AsyncIterator[LLMStreamResponse]:

522 """Generate streaming completion."""

523 if not self._is_initialized:

524 await self.initialize()

525

526 # Convert to Anthropic format

527 if isinstance(messages, str):

528 prompt = messages

529 else:

530 prompt = self._build_prompt(messages)

531

532 # Stream API call

533 async with self._client.messages.stream(

534 model=self.config.model,

535 messages=[{"role": "user", "content": prompt}],

536 max_tokens=self.config.max_tokens or 1024,

537 temperature=self.config.temperature

538 ) as stream:

539 async for chunk in stream:

540 if chunk.type == 'content_block_delta':

541 yield LLMStreamResponse(

542 delta=chunk.delta.text,

543 is_final=False

544 )

545

546 # Final message

547 message = await stream.get_final_message()

548 yield LLMStreamResponse(

549 delta='',

550 is_final=True,

551 finish_reason=message.stop_reason

552 )

553

554 async def embed(

555 self,

556 texts: Union[str, List[str]],

557 **kwargs

558 ) -> Union[List[float], List[List[float]]]:

559 """Anthropic doesn't provide embeddings."""

560 raise NotImplementedError("Anthropic doesn't provide embedding models")

561

562 async def function_call(

563 self,

564 messages: List[LLMMessage],

565 functions: List[Dict[str, Any]],

566 **kwargs

567 ) -> LLMResponse:

568 """Execute function calling with native Anthropic tools API (Claude 3+)."""

569 if not self._is_initialized:

570 await self.initialize()

571

572 # Convert to Anthropic message format

573 anthropic_messages = []

574 system_content = self.config.system_prompt or ''

575

576 for msg in messages:

577 if msg.role == 'system':

578 # Anthropic uses system parameter, not system messages

579 system_content = msg.content if not system_content else f"{system_content}\n\n{msg.content}"

580 else:

581 anthropic_messages.append({

582 'role': msg.role,

583 'content': msg.content

584 })

585

586 # Convert functions to Anthropic tools format

587 tools = []

588 for func in functions:

589 tool = {

590 'name': func.get('name', ''),

591 'description': func.get('description', ''),

592 'input_schema': func.get('parameters', {

593 'type': 'object',

594 'properties': {},

595 'required': []

596 })

597 }

598 tools.append(tool)

599

600 # Make API call with tools

601 try:

602 response = await self._client.messages.create(

603 model=self.config.model,

604 messages=anthropic_messages,

605 system=system_content if system_content else None,

606 tools=tools,

607 max_tokens=self.config.max_tokens or 1024,

608 temperature=self.config.temperature,

609 top_p=self.config.top_p

610 )

611

612 # Extract response content and tool use

613 content = ''

614 tool_use = None

615

616 for block in response.content:

617 if block.type == 'text':

618 content += block.text

619 elif block.type == 'tool_use':

620 tool_use = {

621 'name': block.name,

622 'arguments': block.input

623 }

624

625 llm_response = LLMResponse(

626 content=content,

627 model=response.model,

628 finish_reason=response.stop_reason,

629 usage={

630 'prompt_tokens': response.usage.input_tokens,

631 'completion_tokens': response.usage.output_tokens,

632 'total_tokens': response.usage.input_tokens + response.usage.output_tokens

633 },

634 function_call=tool_use

635 )

636

637 return llm_response

638

639 except Exception as e:

640 # Fallback to prompt-based approach for older models

641 import logging

642 logging.warning(f"Anthropic native tools failed, falling back to prompt-based: {e}")

643

644 function_descriptions = "\n".join([

645 f"- {f['name']}: {f['description']}"

646 for f in functions

647 ])

648

649 system_prompt = f"""You have access to the following functions:

650{function_descriptions}

651

652 When you need to call a function, respond with:

653 FUNCTION_CALL: {{

654 "name": "function_name",

655 "arguments": {{...}}

656}}"""

657

658 messages_with_system = [

659 LLMMessage(role='system', content=system_prompt)

660 ] + list(messages)

661

662 response = await self.complete(messages_with_system, **kwargs)

663

664 # Parse function call from response

665 if 'FUNCTION_CALL:' in response.content:

666 try:

667 func_json = response.content.split('FUNCTION_CALL:')[1].strip()

668 function_call = json.loads(func_json)

669 response.function_call = function_call

670 except (json.JSONDecodeError, IndexError):

671 pass

672

673 return response

674

675 def _build_prompt(self, messages: List[LLMMessage]) -> str:

676 """Build Anthropic-style prompt from messages."""

677 prompt = ""

678 for msg in messages:

679 if msg.role == 'system':

680 prompt = msg.content + "\n\n" + prompt

681 elif msg.role == 'user':

682 prompt += f"\n\nHuman: {msg.content}"

683 elif msg.role == 'assistant':

684 prompt += f"\n\nAssistant: {msg.content}"

685 prompt += "\n\nAssistant:"

686 return prompt

687

688

689 class OllamaProvider(AsyncLLMProvider):

690 """Ollama local LLM provider.

691

692 Supports latest Ollama features including:

693 - Native tools/function calling (Ollama 0.1.17+)

694 - Chat endpoint with message history

695 - Streaming responses

696 - Embeddings

697 """

698

699 def __init__(

700 self,

701 config: Union[LLMConfig, "Config", Dict[str, Any]],

702 prompt_builder: Optional[AsyncPromptBuilder] = None

703 ):

704 # Normalize config first

705 llm_config = normalize_llm_config(config)

706 super().__init__(llm_config, prompt_builder=prompt_builder)

707

708 # Check for Docker environment and adjust URL accordingly

709 default_url = 'http://localhost:11434'

710 if os.path.exists('/.dockerenv'):

711 # Running in Docker, use host.docker.internal

712 default_url = 'http://host.docker.internal:11434'

713

714 # Allow environment variable override

715 self.base_url = llm_config.api_base or os.environ.get('OLLAMA_BASE_URL', default_url)

716

717 def _build_options(self) -> Dict[str, Any]:

718 """Build options dict for Ollama API calls.

719

720 Returns:

721 Dictionary of options for the API request.

722 """

723 options: Dict[str, Any] = {

724 'temperature': self.config.temperature,

725 'top_p': self.config.top_p

726 }

727

728 if self.config.seed is not None:

729 options['seed'] = self.config.seed

730

731 if self.config.max_tokens:

732 options['num_predict'] = self.config.max_tokens # type: ignore

733

734 if self.config.stop_sequences:

735 options['stop'] = self.config.stop_sequences # type: ignore

736

737 return options

738

739 def _messages_to_ollama(self, messages: List[LLMMessage]) -> List[Dict[str, Any]]:

740 """Convert LLMMessage list to Ollama chat format.

741

742 Args:

743 messages: List of LLM messages

744

745 Returns:

746 List of message dicts in Ollama format

747 """

748 ollama_messages = []

749 for msg in messages:

750 message = {

751 'role': msg.role,

752 'content': msg.content

753 }

754 # Ollama supports images in messages for vision models

755 if msg.metadata.get('images'):

756 message['images'] = msg.metadata['images']

757 ollama_messages.append(message)

758 return ollama_messages

759

760 def _adapt_tools(self, tools: List[Dict[str, Any]]) -> List[Dict[str, Any]]:

761 """Adapt tools to Ollama format.

762

763 Ollama uses a similar format to OpenAI for tools.

764

765 Args:

766 tools: List of tool definitions

767

768 Returns:

769 List of tools in Ollama format

770 """

771 # Ollama format is similar to OpenAI

772 ollama_tools = []

773 for tool in tools:

774 ollama_tools.append({

775 'type': 'function',

776 'function': {

777 'name': tool.get('name'),

778 'description': tool.get('description', ''),

779 'parameters': tool.get('parameters', {})

780 }

781 })

782 return ollama_tools

783

784 async def initialize(self) -> None:

785 """Initialize Ollama client."""

786 try:

787 import aiohttp

788 self._session = aiohttp.ClientSession(

789 timeout=aiohttp.ClientTimeout(total=self.config.timeout or 30.0)

790 )

791

792 # Test connection and verify model availability

793 try:

794 async with self._session.get(f"{self.base_url}/api/tags") as response:

795 if response.status == 200:

796 data = await response.json()

797 models = [m['name'] for m in data.get('models', [])]

798 if models:

799 # Check if configured model is available

800 if self.config.model not in models:

801 # Try without tag (e.g., 'llama2' instead of 'llama2:latest')

802 base_model = self.config.model.split(':')[0]

803 matching_models = [m for m in models if m.startswith(base_model)]

804 if matching_models:

805 # Use first matching model

806 self.config.model = matching_models[0]

807 import logging

808 logging.info(f"Ollama: Using model {self.config.model}")

809 else:

810 import logging

811 logging.warning(f"Ollama: Model {self.config.model} not found. Available: {models}")

812 else:

813 import logging

814 logging.warning("Ollama: No models found. Please pull a model first.")

815 else:

816 import logging

817 logging.warning(f"Ollama: API returned status {response.status}")

818 except aiohttp.ClientError as e:

819 import logging

820 logging.warning(f"Ollama: Could not connect to {self.base_url}: {e}")

821

822 self._is_initialized = True

823 except ImportError as e:

824 raise ImportError("aiohttp package not installed. Install with: pip install aiohttp") from e

825

826 async def close(self) -> None:

827 """Close Ollama client."""

828 if hasattr(self, '_session') and self._session:

829 await self._session.close()

830 self._is_initialized = False

831

832 async def validate_model(self) -> bool:

833 """Validate model availability."""

834 if not self._is_initialized or not hasattr(self, '_session'):

835 return False

836

837 try:

838 async with self._session.get(f"{self.base_url}/api/tags") as response:

839 if response.status == 200:

840 data = await response.json()

841 models = [m['name'] for m in data.get('models', [])]

842 # Check exact match or base model match

843 if self.config.model in models:

844 return True

845 base_model = self.config.model.split(':')[0]

846 return any(m.startswith(base_model) for m in models)

847 except Exception:

848 return False

849 return False

850

851 def get_capabilities(self) -> List[ModelCapability]:

852 """Get Ollama model capabilities."""

853 # Capabilities depend on the specific model

854 capabilities = [

855 ModelCapability.TEXT_GENERATION,

856 ModelCapability.CHAT,

857 ModelCapability.STREAMING

858 ]

859

860 # Most recent Ollama models support function calling

861 if any(model in self.config.model.lower() for model in ['llama3', 'mistral', 'mixtral', 'qwen']):

862 capabilities.append(ModelCapability.FUNCTION_CALLING)

863

864 if 'llava' in self.config.model.lower():

865 capabilities.append(ModelCapability.VISION)

866

867 if 'codellama' in self.config.model.lower() or 'codegemma' in self.config.model.lower():

868 capabilities.append(ModelCapability.CODE)

869

870 return capabilities

871

872 async def complete(

873 self,

874 messages: Union[str, List[LLMMessage]],

875 **kwargs

876 ) -> LLMResponse:

877 """Generate completion using Ollama chat endpoint."""

878 if not self._is_initialized:

879 await self.initialize()

880

881 # Convert to message list

882 if isinstance(messages, str):

883 messages = [LLMMessage(role='user', content=messages)]

884

885 # Add system prompt if configured

886 if self.config.system_prompt and (not messages or messages[0].role != 'system'):

887 messages = [LLMMessage(role='system', content=self.config.system_prompt)] + list(messages)

888

889 # Convert to Ollama format

890 ollama_messages = self._messages_to_ollama(messages)

891

892 # Build payload for chat endpoint

893 payload = {

894 'model': self.config.model,

895 'messages': ollama_messages,

896 'stream': False,

897 'options': self._build_options()

898 }

899

900 # Add format if JSON mode requested

901 if self.config.response_format == 'json':

902 payload['format'] = 'json'

903

904 async with self._session.post(f"{self.base_url}/api/chat", json=payload) as response:

905 response.raise_for_status()

906 data = await response.json()

907

908 # Extract response

909 content = data.get('message', {}).get('content', '')

910

911 return LLMResponse(

912 content=content,

913 model=self.config.model,

914 finish_reason='stop' if data.get('done') else 'length',

915 usage={

916 'prompt_tokens': data.get('prompt_eval_count', 0),

917 'completion_tokens': data.get('eval_count', 0),

918 'total_tokens': data.get('prompt_eval_count', 0) + data.get('eval_count', 0)

919 } if 'eval_count' in data else None,

920 metadata={

921 'eval_duration': data.get('eval_duration'),

922 'total_duration': data.get('total_duration'),

923 'model_info': data.get('model', '')

924 }

925 )

926

927 async def stream_complete(

928 self,

929 messages: Union[str, List[LLMMessage]],

930 **kwargs

931 ) -> AsyncIterator[LLMStreamResponse]:

932 """Generate streaming completion."""

933 if not self._is_initialized:

934 await self.initialize()

935

936 # Convert to Ollama format

937 if isinstance(messages, str):

938 prompt = messages

939 else:

940 prompt = self._build_prompt(messages)

941

942 # Stream API call

943 payload = {

944 'model': self.config.model,

945 'prompt': prompt,

946 'stream': True,

947 'options': self._build_options()

948 }

949

950 async with self._session.post(f"{self.base_url}/api/generate", json=payload) as response:

951 response.raise_for_status()

952

953 async for line in response.content:

954 if line:

955 data = json.loads(line.decode('utf-8'))

956 yield LLMStreamResponse(

957 delta=data.get('response', ''),

958 is_final=data.get('done', False),

959 finish_reason='stop' if data.get('done') else None

960 )

961

962 async def embed(

963 self,

964 texts: Union[str, List[str]],

965 **kwargs

966 ) -> Union[List[float], List[List[float]]]:

967 """Generate embeddings."""

968 if not self._is_initialized:

969 await self.initialize()

970

971 if isinstance(texts, str):

972 texts = [texts]

973 single = True

974 else:

975 single = False

976

977 embeddings = []

978 for text in texts:

979 payload = {

980 'model': self.config.model,

981 'prompt': text

982 }

983

984 async with self._session.post(f"{self.base_url}/api/embeddings", json=payload) as response:

985 response.raise_for_status()

986 data = await response.json()

987 embeddings.append(data['embedding'])

988

989 return embeddings[0] if single else embeddings

990

991 async def function_call(

992 self,

993 messages: List[LLMMessage],

994 functions: List[Dict[str, Any]],

995 **kwargs

996 ) -> LLMResponse:

997 """Execute function calling with native Ollama tools support.

998

999 For Ollama 0.1.17+, uses native tools API.

1000 Falls back to prompt-based approach for older versions.

1001 """

1002 if not self._is_initialized:

1003 await self.initialize()

1004

1005 # Add system prompt if configured

1006 if self.config.system_prompt and (not messages or messages[0].role != 'system'):

1007 messages = [LLMMessage(role='system', content=self.config.system_prompt)] + list(messages)

1008

1009 # Convert to Ollama format

1010 ollama_messages = self._messages_to_ollama(messages)

1011

1012 # Adapt tools to Ollama format

1013 ollama_tools = self._adapt_tools(functions)

1014

1015 # Build payload with tools

1016 payload = {

1017 'model': self.config.model,

1018 'messages': ollama_messages,

1019 'tools': ollama_tools,

1020 'stream': False,

1021 'options': self._build_options()

1022 }

1023

1024 try:

1025 async with self._session.post(f"{self.base_url}/api/chat", json=payload) as response:

1026 response.raise_for_status()

1027 data = await response.json()

1028

1029 # Extract response and tool calls

1030 message = data.get('message', {})

1031 content = message.get('content', '')

1032 tool_calls = message.get('tool_calls', [])

1033

1034 # Build response

1035 llm_response = LLMResponse(

1036 content=content,

1037 model=self.config.model,

1038 finish_reason='tool_calls' if tool_calls else 'stop',

1039 usage={

1040 'prompt_tokens': data.get('prompt_eval_count', 0),

1041 'completion_tokens': data.get('eval_count', 0),

1042 'total_tokens': data.get('prompt_eval_count', 0) + data.get('eval_count', 0)

1043 } if 'eval_count' in data else None

1044 )

1045

1046 # Add tool call information if present

1047 if tool_calls:

1048 # Use first tool call (Ollama can return multiple)

1049 tool_call = tool_calls[0]

1050 llm_response.function_call = {

1051 'name': tool_call.get('function', {}).get('name', ''),

1052 'arguments': tool_call.get('function', {}).get('arguments', {})

1053 }

1054

1055 return llm_response

1056

1057 except Exception as e:

1058 # Fallback to prompt-based approach if native tools not supported

1059 import logging

1060 logging.warning(f"Ollama native tools failed, falling back to prompt-based: {e}")

1061

1062 function_descriptions = json.dumps(functions, indent=2)

1063

1064 system_prompt = f"""You have access to these functions:

1065{function_descriptions}

1066

1067 To call a function, respond with JSON:

1068{{"function": "name", "arguments": {{...}}}}"""

1069

1070 messages_with_system = [

1071 LLMMessage(role='system', content=system_prompt)

1072 ] + list(messages)

1073

1074 response = await self.complete(messages_with_system, **kwargs)

1075

1076 # Try to parse function call

1077 try:

1078 func_data = json.loads(response.content)

1079 if 'function' in func_data:

1080 response.function_call = {

1081 'name': func_data['function'],

1082 'arguments': func_data.get('arguments', {})

1083 }

1084 except json.JSONDecodeError:

1085 pass

1086

1087 return response

1088

1089 def _build_prompt(self, messages: List[LLMMessage]) -> str:

1090 """Build prompt from messages."""

1091 prompt = ""

1092 for msg in messages:

1093 if msg.role == 'system':

1094 prompt += f"System: {msg.content}\n\n"

1095 elif msg.role == 'user':

1096 prompt += f"User: {msg.content}\n\n"

1097 elif msg.role == 'assistant':

1098 prompt += f"Assistant: {msg.content}\n\n"

1099 return prompt

1100

1101

1102 class HuggingFaceProvider(AsyncLLMProvider):

1103 """HuggingFace Inference API provider."""

1104

1105 def __init__(

1106 self,

1107 config: Union[LLMConfig, "Config", Dict[str, Any]],

1108 prompt_builder: Optional[AsyncPromptBuilder] = None

1109 ):

1110 # Normalize config first

1111 llm_config = normalize_llm_config(config)

1112 super().__init__(llm_config, prompt_builder=prompt_builder)

1113 self.base_url = llm_config.api_base or 'https://api-inference.huggingface.co/models'

1114

1115 async def initialize(self) -> None:

1116 """Initialize HuggingFace client."""

1117 try:

1118 import aiohttp

1119

1120 api_key = self.config.api_key or os.environ.get('HUGGINGFACE_API_KEY')

1121 if not api_key:

1122 raise ValueError("HuggingFace API key not provided")

1123

1124 self._session = aiohttp.ClientSession(

1125 headers={'Authorization': f'Bearer {api_key}'},

1126 timeout=aiohttp.ClientTimeout(total=self.config.timeout)

1127 )

1128 self._is_initialized = True

1129 except ImportError as e:

1130 raise ImportError("aiohttp package not installed. Install with: pip install aiohttp") from e

1131

1132 async def close(self) -> None:

1133 """Close HuggingFace client."""

1134 if hasattr(self, '_session') and self._session:

1135 await self._session.close()

1136 self._is_initialized = False

1137

1138 async def validate_model(self) -> bool:

1139 """Validate model availability."""

1140 try:

1141 url = f"{self.base_url}/{self.config.model}"

1142 async with self._session.get(url) as response:

1143 return response.status == 200

1144 except Exception:

1145 return False

1146

1147 def get_capabilities(self) -> List[ModelCapability]:

1148 """Get HuggingFace model capabilities."""

1149 # Basic capabilities for text generation models

1150 return [

1151 ModelCapability.TEXT_GENERATION,

1152 ModelCapability.EMBEDDINGS if 'embedding' in self.config.model else None # type: ignore

1153 ]

1154

1155 async def complete(

1156 self,

1157 messages: Union[str, List[LLMMessage]],

1158 **kwargs

1159 ) -> LLMResponse:

1160 """Generate completion."""

1161 if not self._is_initialized:

1162 await self.initialize()

1163

1164 # Convert to prompt

1165 if isinstance(messages, str):

1166 prompt = messages

1167 else:

1168 prompt = self._build_prompt(messages)

1169

1170 # Make API call

1171 url = f"{self.base_url}/{self.config.model}"

1172 payload = {

1173 'inputs': prompt,

1174 'parameters': {

1175 'temperature': self.config.temperature,

1176 'top_p': self.config.top_p,

1177 'max_new_tokens': self.config.max_tokens or 100,

1178 'return_full_text': False

1179 }

1180 }

1181

1182 async with self._session.post(url, json=payload) as response:

1183 response.raise_for_status()

1184 data = await response.json()

1185

1186 # Parse response

1187 if isinstance(data, list) and len(data) > 0:

1188 text = data[0].get('generated_text', '')

1189 else:

1190 text = str(data)

1191

1192 return LLMResponse(

1193 content=text,

1194 model=self.config.model,

1195 finish_reason='stop'

1196 )

1197

1198 async def stream_complete(

1199 self,

1200 messages: Union[str, List[LLMMessage]],

1201 **kwargs

1202 ) -> AsyncIterator[LLMStreamResponse]:

1203 """HuggingFace Inference API doesn't support streaming."""

1204 # Simulate streaming by yielding complete response

1205 response = await self.complete(messages, **kwargs)

1206 yield LLMStreamResponse(

1207 delta=response.content,

1208 is_final=True,

1209 finish_reason=response.finish_reason

1210 )

1211

1212 async def embed(

1213 self,

1214 texts: Union[str, List[str]],

1215 **kwargs

1216 ) -> Union[List[float], List[List[float]]]:

1217 """Generate embeddings."""

1218 if not self._is_initialized:

1219 await self.initialize()

1220

1221 if isinstance(texts, str):

1222 texts = [texts]

1223 single = True

1224 else:

1225 single = False

1226

1227 url = f"{self.base_url}/{self.config.model}"

1228 payload = {'inputs': texts}

1229

1230 async with self._session.post(url, json=payload) as response:

1231 response.raise_for_status()

1232 embeddings = await response.json()

1233

1234 return embeddings[0] if single else embeddings

1235

1236 async def function_call(

1237 self,

1238 messages: List[LLMMessage],

1239 functions: List[Dict[str, Any]],

1240 **kwargs

1241 ) -> LLMResponse:

1242 """HuggingFace doesn't have native function calling."""

1243 raise NotImplementedError("Function calling not supported for HuggingFace models")

1244

1245 def _build_prompt(self, messages: List[LLMMessage]) -> str:

1246 """Build prompt from messages."""

1247 prompt = ""

1248 for msg in messages:

1249 if msg.role == 'system':

1250 prompt += f"{msg.content}\n\n"

1251 elif msg.role == 'user':

1252 prompt += f"User: {msg.content}\n"

1253 elif msg.role == 'assistant':

1254 prompt += f"Assistant: {msg.content}\n"

1255 return prompt

1256

1257

1258 class EchoProvider(AsyncLLMProvider):

1259 """Echo provider for testing and debugging.

1260

1261 This provider echoes back input messages and generates deterministic

1262 mock embeddings. Perfect for testing without real LLM API calls.

1263

1264 Features:

1265 - Echoes back user messages with configurable prefix

1266 - Generates deterministic embeddings based on content hash

1267 - Supports streaming (character-by-character echo)

1268 - Mocks function calling with deterministic responses

1269 - Zero external dependencies

1270 - Instant responses

1271 """

1272

1273 def __init__(

1274 self,

1275 config: Union[LLMConfig, "Config", Dict[str, Any]],

1276 prompt_builder: Optional[AsyncPromptBuilder] = None

1277 ):

1278 # Normalize config first

1279 llm_config = normalize_llm_config(config)

1280 super().__init__(llm_config, prompt_builder=prompt_builder)

1281

1282 # Echo-specific configuration from options

1283 self.echo_prefix = llm_config.options.get('echo_prefix', 'Echo: ')

1284 self.embedding_dim = llm_config.options.get('embedding_dim', 768)

1285 self.mock_tokens = llm_config.options.get('mock_tokens', True)

1286 self.stream_delay = llm_config.options.get('stream_delay', 0.0) # seconds per char

1287

1288 def _generate_embedding(self, text: str) -> List[float]:

1289 """Generate deterministic embedding vector from text.

1290

1291 Uses SHA-256 hash to create a deterministic vector that:

1292 - Is always the same for the same input

1293 - Distributes values across [-1, 1] range

1294 - Has configurable dimensionality

1295

1296 Args:

1297 text: Input text

1298

1299 Returns:

1300 Embedding vector of size self.embedding_dim

1301 """

1302 # Create hash of the text

1303 hash_obj = hashlib.sha256(text.encode('utf-8'))

1304 hash_bytes = hash_obj.digest()

1305

1306 # Generate embedding by repeatedly hashing

1307 embedding = []

1308 current_hash = hash_bytes

1309

1310 while len(embedding) < self.embedding_dim:

1311 # Convert hash bytes to floats in [-1, 1]

1312 for byte in current_hash:

1313 if len(embedding) >= self.embedding_dim:

1314 break

1315 # Normalize byte (0-255) to [-1, 1]

1316 embedding.append((byte / 127.5) - 1.0)

1317

1318 # Rehash for next batch of values

1319 current_hash = hashlib.sha256(current_hash).digest()

1320

1321 return embedding[:self.embedding_dim]

1322

1323 def _count_tokens(self, text: str) -> int:

1324 """Mock token counting (simple character-based estimate).

1325

1326 Args:

1327 text: Input text

1328

1329 Returns:

1330 Estimated token count

1331 """

1332 # Rough approximation: 1 token ~= 4 characters

1333 return max(1, len(text) // 4)

1334

1335 async def initialize(self) -> None:

1336 """Initialize echo provider (no-op)."""

1337 self._is_initialized = True

1338

1339 async def close(self) -> None:

1340 """Close echo provider (no-op)."""

1341 self._is_initialized = False

1342

1343 async def validate_model(self) -> bool:

1344 """Validate model (always true for echo)."""

1345 return True

1346

1347 def get_capabilities(self) -> List[ModelCapability]:

1348 """Get echo provider capabilities."""

1349 return [

1350 ModelCapability.TEXT_GENERATION,

1351 ModelCapability.CHAT,

1352 ModelCapability.EMBEDDINGS,

1353 ModelCapability.FUNCTION_CALLING,

1354 ModelCapability.STREAMING,

1355 ModelCapability.JSON_MODE

1356 ]

1357

1358 async def complete(

1359 self,

1360 messages: Union[str, List[LLMMessage]],

1361 **kwargs

1362 ) -> LLMResponse:

1363 """Echo back the input messages.

1364

1365 Args:

1366 messages: Input messages or prompt

1367 **kwargs: Additional parameters (ignored)

1368

1369 Returns:

1370 Echo response

1371 """

1372 if not self._is_initialized:

1373 await self.initialize()

1374

1375 # Convert to message list

1376 if isinstance(messages, str):

1377 messages = [LLMMessage(role='user', content=messages)]

1378

1379 # Build echo response from last user message

1380 user_messages = [msg for msg in messages if msg.role == 'user']

1381 if user_messages:

1382 content = self.echo_prefix + user_messages[-1].content

1383 else:

1384 content = self.echo_prefix + "(no user message)"

1385

1386 # Add system prompt if configured and in echo

1387 if self.config.system_prompt and self.config.options.get('echo_system', False):

1388 content = f"[System: {self.config.system_prompt}]\n{content}"

1389

1390 # Mock token usage

1391 prompt_tokens = sum(self._count_tokens(msg.content) for msg in messages)

1392 completion_tokens = self._count_tokens(content)

1393

1394 return LLMResponse(

1395 content=content,

1396 model=self.config.model or 'echo-model',

1397 finish_reason='stop',

1398 usage={

1399 'prompt_tokens': prompt_tokens,

1400 'completion_tokens': completion_tokens,

1401 'total_tokens': prompt_tokens + completion_tokens

1402 } if self.mock_tokens else None

1403 )

1404

1405 async def stream_complete(

1406 self,

1407 messages: Union[str, List[LLMMessage]],

1408 **kwargs

1409 ) -> AsyncIterator[LLMStreamResponse]:

1410 """Stream echo response character by character.

1411

1412 Args:

1413 messages: Input messages or prompt

1414 **kwargs: Additional parameters (ignored)

1415

1416 Yields:

1417 Streaming response chunks

1418 """

1419 if not self._is_initialized:

1420 await self.initialize()

1421

1422 # Get full response

1423 response = await self.complete(messages, **kwargs)

1424

1425 # Stream character by character

1426 for i, char in enumerate(response.content):

1427 is_final = (i == len(response.content) - 1)

1428

1429 yield LLMStreamResponse(

1430 delta=char,

1431 is_final=is_final,

1432 finish_reason='stop' if is_final else None,

1433 usage=response.usage if is_final else None

1434 )

1435

1436 # Optional delay for realistic streaming

1437 if self.stream_delay > 0:

1438 import asyncio

1439 await asyncio.sleep(self.stream_delay)

1440

1441 async def embed(

1442 self,

1443 texts: Union[str, List[str]],

1444 **kwargs

1445 ) -> Union[List[float], List[List[float]]]:

1446 """Generate deterministic mock embeddings.

1447

1448 Args:

1449 texts: Input text(s)

1450 **kwargs: Additional parameters (ignored)

1451

1452 Returns:

1453 Embedding vector(s)

1454 """

1455 if not self._is_initialized:

1456 await self.initialize()

1457

1458 if isinstance(texts, str):

1459 return self._generate_embedding(texts)

1460 else:

1461 return [self._generate_embedding(text) for text in texts]

1462

1463 async def function_call(

1464 self,

1465 messages: List[LLMMessage],

1466 functions: List[Dict[str, Any]],

1467 **kwargs

1468 ) -> LLMResponse:

1469 """Mock function calling with deterministic response.

1470

1471 Args:

1472 messages: Conversation messages

1473 functions: Available functions

1474 **kwargs: Additional parameters (ignored)

1475

1476 Returns:

1477 Response with mock function call

1478 """

1479 if not self._is_initialized:

1480 await self.initialize()

1481

1482 # Get last user message

1483 user_messages = [msg for msg in messages if msg.role == 'user']

1484 user_content = user_messages[-1].content if user_messages else ""

1485

1486 # Mock function call: use first function with mock arguments

1487 if functions:

1488 first_func = functions[0]

1489 func_name = first_func.get('name', 'unknown_function')

1490

1491 # Generate mock arguments based on parameters schema

1492 params = first_func.get('parameters', {})

1493 properties = params.get('properties', {})

1494

1495 mock_args = {}

1496 for param_name, param_schema in properties.items():

1497 param_type = param_schema.get('type', 'string')

1498

1499 # Generate mock value based on type

1500 if param_type == 'string':

1501 mock_args[param_name] = f"mock_{param_name}_from_echo"

1502 elif param_type == 'number' or param_type == 'integer':

1503 # Use hash to generate deterministic number

1504 hash_val = int(hashlib.md5(user_content.encode()).hexdigest()[:8], 16)

1505 mock_args[param_name] = hash_val % 100

1506 elif param_type == 'boolean':

1507 # Deterministic boolean based on hash

1508 hash_val = int(hashlib.md5(user_content.encode()).hexdigest()[:2], 16)

1509 mock_args[param_name] = hash_val % 2 == 0

1510 elif param_type == 'array':

1511 mock_args[param_name] = ["mock_item_1", "mock_item_2"]

1512 elif param_type == 'object':

1513 mock_args[param_name] = {"mock_key": "mock_value"}

1514 else:

1515 mock_args[param_name] = None

1516

1517 # Build response with function call

1518 content = f"{self.echo_prefix}Calling function '{func_name}'"

1519

1520 prompt_tokens = sum(self._count_tokens(msg.content) for msg in messages)

1521 completion_tokens = self._count_tokens(content)

1522

1523 return LLMResponse(

1524 content=content,

1525 model=self.config.model or 'echo-model',

1526 finish_reason='function_call',

1527 usage={

1528 'prompt_tokens': prompt_tokens,

1529 'completion_tokens': completion_tokens,

1530 'total_tokens': prompt_tokens + completion_tokens

1531 } if self.mock_tokens else None,

1532 function_call={

1533 'name': func_name,

1534 'arguments': mock_args

1535 }

1536 )

1537 else:

1538 # No functions provided, just echo

1539 return await self.complete(messages, **kwargs)

1540

1541

1542 class LLMProviderFactory:

1543 """Factory for creating LLM providers from configuration.

1544

1545 This factory class integrates with the dataknobs Config system,

1546 allowing providers to be instantiated via Config.get_factory().

1547

1548 Example:

1549 >>> from dataknobs_config import Config

1550 >>> config = Config({

1551 ... "llm": [{

1552 ... "name": "gpt4",

1553 ... "provider": "openai",

1554 ... "model": "gpt-4",

1555 ... "factory": "dataknobs_llm.LLMProviderFactory"

1556 ... }]

1557 ... })

1558 >>> factory = config.get_factory("llm", "gpt4")

1559 >>> provider = factory.create(config.get("llm", "gpt4"))

1560 """

1561

1562 # Registry of provider classes

1563 _providers: Dict[str, Type[AsyncLLMProvider]] = {

1564 'openai': None, # type: ignore # Populated lazily

1565 'anthropic': None, # type: ignore

1566 'ollama': None, # type: ignore

1567 'huggingface': None, # type: ignore

1568 'echo': None, # type: ignore

1569 }

1570

1571 def __init__(self, is_async: bool = True):

1572 """Initialize the factory.

1573

1574 Args:

1575 is_async: Whether to create async providers (default: True)

1576 """

1577 self.is_async = is_async

1578

1579 # Lazily populate provider registry

1580 if LLMProviderFactory._providers['openai'] is None:

1581 LLMProviderFactory._providers.update({

1582 'openai': OpenAIProvider,

1583 'anthropic': AnthropicProvider,

1584 'ollama': OllamaProvider,

1585 'huggingface': HuggingFaceProvider,

1586 'echo': EchoProvider,

1587 })

1588

1589 def create(

1590 self,

1591 config: Union[LLMConfig, "Config", Dict[str, Any]],

1592 **kwargs: Any

1593 ) -> Union[AsyncLLMProvider, SyncLLMProvider]:

1594 """Create an LLM provider from configuration.

1595

1596 Args:

1597 config: Configuration (LLMConfig, Config object, or dict)

1598 **kwargs: Additional arguments passed to provider constructor

1599

1600 Returns:

1601 LLM provider instance

1602

1603 Raises:

1604 ValueError: If provider type is unknown

1605 """

1606 # Normalize config to LLMConfig

1607 llm_config = normalize_llm_config(config)

1608

1609 # Get provider class

1610 provider_class = self._providers.get(llm_config.provider.lower())

1611 if not provider_class:

1612 raise ValueError(

1613 f"Unknown provider: {llm_config.provider}. "

1614 f"Available providers: {list(self._providers.keys())}"

1615 )

1616

1617 # Create provider instance

1618 if self.is_async:

1619 return provider_class(llm_config)

1620 else:

1621 # Wrap in sync adapter

1622 async_provider = provider_class(llm_config)

1623 return SyncProviderAdapter(async_provider) # type: ignore

1624

1625 @classmethod

1626 def register_provider(

1627 cls,

1628 name: str,

1629 provider_class: Type[AsyncLLMProvider]

1630 ) -> None:

1631 """Register a custom provider class.

1632

1633 Allows extending the factory with custom provider implementations.

1634

1635 Args:

1636 name: Provider name (e.g., 'custom')

1637 provider_class: Provider class (must inherit from AsyncLLMProvider)

1638

1639 Example:

1640 >>> class CustomProvider(AsyncLLMProvider):

1641 ... pass

1642 >>> LLMProviderFactory.register_provider('custom', CustomProvider)

1643 """

1644 cls._providers[name.lower()] = provider_class

1645

1646 def __call__(

1647 self,

1648 config: Union[LLMConfig, "Config", Dict[str, Any]],

1649 **kwargs: Any

1650 ) -> Union[AsyncLLMProvider, SyncLLMProvider]:

1651 """Allow factory to be called directly.

1652

1653 Makes the factory callable for convenience.

1654

1655 Args:

1656 config: Configuration

1657 **kwargs: Additional arguments

1658

1659 Returns:

1660 LLM provider instance

1661 """

1662 return self.create(config, **kwargs)

1663

1664

1665 def create_llm_provider(

1666 config: Union[LLMConfig, "Config", Dict[str, Any]],

1667 is_async: bool = True

1668) -> Union[AsyncLLMProvider, SyncLLMProvider]:

1669 """Create appropriate LLM provider based on configuration.

1670

1671 Convenience function that uses LLMProviderFactory internally.

1672 Now supports LLMConfig, Config objects, and dictionaries.

1673

1674 Args:

1675 config: LLM configuration (LLMConfig, Config, or dict)

1676 is_async: Whether to create async provider

1677

1678 Returns:

1679 LLM provider instance

1680

1681 Example:

1682 >>> # Direct usage with dict

1683 >>> provider = create_llm_provider({

1684 ... "provider": "openai",

1685 ... "model": "gpt-4",

1686 ... "api_key": "..."

1687 ... })

1688

1689 >>> # With Config object

1690 >>> from dataknobs_config import Config

1691 >>> config = Config({"llm": [{"provider": "openai", "model": "gpt-4"}]})

1692 >>> provider = create_llm_provider(config)

1693 """

1694 factory = LLMProviderFactory(is_async=is_async)

1695 return factory.create(config)