Refactoring client and providers.

Added Azure support & refactored code.
Refactoring includes -
- ProviderFactory provides a specific provider impl.
- Lazily import the provider based on config passed to Client.
- Reduced the number of files.

Author: rohitprasad15

Diff for: .gitignore

@@ -1,3 +1,4 @@
 .idea/
 .vscode/
 __pycache__/
+env/

Diff for: aisuite/__init__.py

@@ -1 +1,2 @@
 from .client import Client
+from .provider import ProviderNames

Diff for: aisuite/client.py

@@ -0,0 +1,84 @@
+from .provider import ProviderFactory, ProviderNames
+
+
+class Client:
+    def __init__(self, provider_configs: dict = {}):
+        """
+        Initialize the client with provider configurations. 
+        Use the ProviderFactory to create provider instances.
+        """
+        self.providers = {}
+        self.provider_configs = provider_configs
+        for provider_key, config in provider_configs.items():
+            # Check if the provider key is a valid ProviderNames enum
+            if not isinstance(provider_key, ProviderNames):
+                raise ValueError(f"Provider {provider_key} is not a valid ProviderNames enum")
+            # Store the value of the enum in the providers dictionary
+            self.providers[provider_key.value] = ProviderFactory.create_provider(provider_key, config)
+
+        self._chat = None
+
+    def configure(self, provider_configs: dict = None):
+        """
+        Configure the client with provider configurations.
+        """
+        if provider_configs is None:
+            return
+ 
+        self.provider_configs.update(provider_configs)
+
+        for provider_key, config in self.provider_configs.items():
+            if not isinstance(provider_key, ProviderNames):
+                raise ValueError(f"Provider {provider_key} is not a valid ProviderNames enum")
+            self.providers[provider_key.value] = ProviderFactory.create_provider(provider_key, config)
+
+    @property
+    def chat(self):
+        """Return the chat API interface."""
+        if not self._chat:
+            self._chat = Chat(self)
+        return self._chat
+
+
+class Chat:
+    def __init__(self, client: 'Client'):
+        self.client = client
+
+    @property
+    def completions(self):
+        """Return the completions interface."""
+        return Completions(self.client)
+
+
+class Completions:
+    def __init__(self, client: 'Client'):
+        self.client = client
+
+    def create(self, model: str, messages: list, **kwargs):
+        """
+        Create chat completion based on the model, messages, and any extra arguments.
+        """
+        # Check that correct format is used
+        if ':' not in model:
+            raise ValueError(f"Invalid model format. Expected 'provider:model', got '{model}'")
+ 
+        # Extract the provider key from the model identifier, e.g., "aws-bedrock:model-name"
+        provider_key, model_name = model.split(":", 1)
+
+        if provider_key not in ProviderNames._value2member_map_:
+            raise ValueError(f"Provider {provider_key} is not a valid ProviderNames enum")
+
+        if provider_key not in self.client.providers:
+            config = {}
+            if provider_key in self.client.provider_configs:
+                config = self.client.provider_configs[provider_key]
+            self.client.providers[provider_key] = ProviderFactory.create_provider(ProviderNames(provider_key), config)
+ 
+        provider = self.client.providers.get(provider_key)
+        if not provider:
+            raise ValueError(f"Could not load provider for {provider_key}.")
+
+        # Delegate the chat completion to the correct provider's implementation
+        # Any additional arguments will be passed to the provider's implementation.
+        # Eg: max_tokens, temperature, etc.
+        return provider.chat_completions_create(model_name, messages, **kwargs)

Diff for: aisuite/client/__init__.py

@@ -1,4 +1 @@
-"""Provides the ProviderInterface for defining the interface that all FM providers must implement."""
-
-from .provider_interface import ProviderInterface
 from .chat_completion_response import ChatCompletionResponse

Diff for: aisuite/client/chat.py

@@ -0,0 +1,13 @@
+"""Provides the individual provider interfaces for each FM provider."""
+
+from .anthropic_interface import AnthropicInterface
+from .aws_bedrock_interface import AWSBedrockInterface
+from .fireworks_interface import FireworksInterface
+from .groq_interface import GroqInterface
+from .mistral_interface import MistralInterface
+from .octo_interface import OctoInterface
+from .ollama_interface import OllamaInterface
+from .openai_interface import OpenAIInterface
+from .replicate_interface import ReplicateInterface
+from .together_interface import TogetherInterface
+from .google_interface import GoogleInterface

Diff for: aisuite/client/client.py

@@ -0,0 +1,59 @@
+from abc import ABC, abstractmethod
+from enum import Enum
+import importlib
+
+class LLMError(Exception):
+    """Custom exception for LLM errors."""
+    def __init__(self, message):
+        super().__init__(message)
+
+
+class Provider(ABC):
+    @abstractmethod
+    def chat_completions_create(self, model, messages):
+        """Abstract method for chat completion calls, to be implemented by each provider."""
+        pass
+
+
+class ProviderNames(str, Enum):
+    OPENAI = 'openai'
+    AWS_BEDROCK = 'aws-bedrock'
+    ANTHROPIC = 'anthropic'
+    AZURE = 'azure'
+
+
+class ProviderFactory:
+    """Factory to register and create provider instances based on keys."""
+
+    _provider_info = {
+        ProviderNames.OPENAI: ('aisuite.providers.openai_provider', 'OpenAIProvider'),
+        ProviderNames.AWS_BEDROCK: ('aisuite.providers.aws_bedrock_provider', 'AWSBedrockProvider'),
+        ProviderNames.ANTHROPIC: ('aisuite.providers.anthropic_provider', 'AnthropicProvider'),
+        ProviderNames.AZURE: ('aisuite.providers.azure_provider', 'AzureProvider'),
+    }
+
+ 
+    @classmethod
+    def create_provider(cls, provider_key, config):
+        """Dynamically import and create an instance of a provider based on the provider key."""
+        if not isinstance(provider_key, ProviderNames):
+            raise ValueError(f"Provider {provider_key} is not a valid ProviderNames enum")
+
+        module_name, class_name = cls._get_provider_info(provider_key)
+        if not module_name:
+            raise ValueError(f"Provider {provider_key.value} is not supported")
+
+        # Lazily load the module
+        try:
+            module = importlib.import_module(module_name)
+        except ImportError as e:
+            raise ImportError(f"Could not import module {module_name}: {str(e)}")
+
+        # Instantiate the provider class
+        provider_class = getattr(module, class_name)
+        return provider_class(**config)
+
+    @classmethod
+    def _get_provider_info(cls, provider_key):
+        """Return the module name and class name for a given provider key."""
+        return cls._provider_info.get(provider_key, (None, None))

Diff for: aisuite/client/completions.py

@@ -1,13 +1 @@
-"""Provides the individual provider interfaces for each FM provider."""
-
-from .anthropic_interface import AnthropicInterface
-from .aws_bedrock_interface import AWSBedrockInterface
-from .fireworks_interface import FireworksInterface
-from .groq_interface import GroqInterface
-from .mistral_interface import MistralInterface
-from .octo_interface import OctoInterface
-from .ollama_interface import OllamaInterface
-from .openai_interface import OpenAIInterface
-from .replicate_interface import ReplicateInterface
-from .together_interface import TogetherInterface
-from .google_interface import GoogleInterface
+# Empty __init__.py