Client Management

class BatchServiceClient:
    """
    A client for issuing REST requests to the Azure Batch service.
    
    Args:
        credentials: Authentication credentials (SharedKeyCredentials or Azure AD)
        batch_url: Base URL for Azure Batch service requests
        
    Attributes:
        application: ApplicationOperations instance
        pool: PoolOperations instance  
        account: AccountOperations instance
        certificate: CertificateOperations instance
        file: FileOperations instance
        job_schedule: JobScheduleOperations instance
        job: JobOperations instance
        task: TaskOperations instance
        compute_node: ComputeNodeOperations instance
        compute_node_extension: ComputeNodeExtensionOperations instance
        api_version: API version string (2024-02-01.19.0)
    """
    def __init__(self, credentials, batch_url: str): ...

class SharedKeyCredentials:
    """
    Shared key authentication for Azure Batch.
    
    Args:
        account_name: Name of the Batch account
        key: Primary or secondary access key for the account
    """
    def __init__(self, account_name: str, key: str): ...
    def signed_session(self, session=None): ...

class BatchServiceClientConfiguration:
    """
    Configuration for BatchServiceClient.
    
    Args:
        credentials: Authentication credentials
        batch_url: Base URL for Batch service
    """
    def __init__(self, credentials, batch_url: str): ...

from azure.batch import BatchServiceClient
from azure.batch.batch_auth import SharedKeyCredentials

# Create credentials
credentials = SharedKeyCredentials(
    account_name="mybatchaccount",
    key="your_primary_or_secondary_key"
)

# Create client
batch_url = "https://mybatchaccount.eastus.batch.azure.com"
client = BatchServiceClient(credentials, batch_url)

# Access operations
pools = client.pool.list()
jobs = client.job.list()

from azure.batch.models import BatchErrorException

try:
    pool = client.pool.get("nonexistent-pool")
except BatchErrorException as e:
    print(f"Batch error: {e.error.code} - {e.error.message}")
    for detail in e.error.values:
        print(f"  {detail.key}: {detail.value}")

# With Azure Active Directory (requires azure-identity)
from azure.identity import DefaultAzureCredential
from msrest.authentication import TokenCredential

# For Azure AD authentication, use the standard Azure identity libraries
credential = DefaultAzureCredential()
# Note: Azure Batch typically uses SharedKeyCredentials
# Azure AD auth requires additional configuration

class BatchServiceClientConfiguration:
    """Client configuration settings."""
    def __init__(self):
        self.credentials: Any
        self.batch_url: str
        self.base_url: str
        self.filepath: str

class SharedKeyAuth:
    """Internal shared key authentication implementation."""
    def __init__(self, header: str, account_name: str, key: str): ...
    def __call__(self, request): ...