Configuration and Utilities

def create_host_config(binds=None, port_bindings=None, lxc_conf=None, 
                      publish_all_ports=False, links=None, privileged=False, 
                      dns=None, dns_search=None, volumes_from=None, 
                      network_mode=None, restart_policy=None, cap_add=None, 
                      cap_drop=None, devices=None, extra_hosts=None, 
                      read_only=None, pid_mode=None, ipc_mode=None, 
                      security_opt=None, ulimits=None, log_config=None, 
                      mem_limit=None, memswap_limit=None, cpu_shares=None, 
                      cpuset_cpus=None, cpuset_mems=None, **kwargs):
    """
    Create host configuration for containers.
    
    Parameters:
    - binds (dict|list): Volume bindings
    - port_bindings (dict): Port bindings mapping
    - lxc_conf (dict): LXC configuration options
    - publish_all_ports (bool): Publish all exposed ports to random host ports
    - links (list): Container links (deprecated)
    - privileged (bool): Run container in privileged mode
    - dns (list): Custom DNS servers
    - dns_search (list): Custom DNS search domains
    - volumes_from (list): Mount volumes from other containers
    - network_mode (str): Network mode ('bridge', 'host', 'none', etc.)
    - restart_policy (dict): Restart policy configuration
    - cap_add (list): Linux capabilities to add
    - cap_drop (list): Linux capabilities to drop
    - devices (list): Device mappings
    - extra_hosts (list): Extra host entries for /etc/hosts
    - read_only (bool): Mount root filesystem as read-only
    - pid_mode (str): PID namespace mode
    - ipc_mode (str): IPC namespace mode
    - security_opt (list): Security options
    - ulimits (list): Resource limits (Ulimit objects)
    - log_config (LogConfig): Logging configuration
    - mem_limit (int|str): Memory limit
    - memswap_limit (int|str): Memory + swap limit
    - cpu_shares (int): CPU shares (relative weight)
    - cpuset_cpus (str): CPUs to use
    - cpuset_mems (str): Memory nodes to use
    
    Returns:
    dict: Host configuration dictionary
    """

def create_container_config(image, command=None, hostname=None, user=None, 
                           detach=False, stdin_open=False, tty=False, 
                           mem_limit=None, ports=None, environment=None, 
                           dns=None, volumes=None, volumes_from=None, 
                           network_disabled=False, name=None, entrypoint=None, 
                           cpu_shares=None, working_dir=None, domainname=None, 
                           memswap_limit=None, cpuset=None, host_config=None, 
                           mac_address=None, labels=None, volume_driver=None, 
                           stop_signal=None, networking_config=None, **kwargs):
    """
    Create container configuration dictionary.
    
    Parameters:
    - image (str): Image name or ID
    - command (str|list): Command to run
    - hostname (str): Container hostname
    - user (str): Username or UID
    - detach (bool): Run in detached mode
    - stdin_open (bool): Keep STDIN open
    - tty (bool): Allocate pseudo-TTY
    - mem_limit (int|str): Memory limit
    - ports (list): Ports to expose
    - environment (dict|list): Environment variables
    - dns (list): DNS servers
    - volumes (list): Volume mount points
    - volumes_from (list): Volumes from other containers
    - network_disabled (bool): Disable networking
    - name (str): Container name
    - entrypoint (str|list): Override default entrypoint
    - cpu_shares (int): CPU shares
    - working_dir (str): Working directory
    - domainname (str): Domain name
    - memswap_limit (int): Memory + swap limit
    - cpuset (str): CPUs to use
    - host_config (dict): Host configuration
    - mac_address (str): MAC address
    - labels (dict): Container labels
    - volume_driver (str): Volume driver
    - stop_signal (str): Stop signal
    - networking_config (dict): Network configuration
    
    Returns:
    dict: Container configuration dictionary
    """

def create_networking_config(endpoints_config=None):
    """
    Create networking configuration for containers.
    
    Parameters:
    - endpoints_config (dict): Endpoint configurations by network name
    
    Returns:
    dict: Networking configuration dictionary
    """

def create_endpoint_config(version, aliases=None, links=None, 
                          ipv4_address=None, ipv6_address=None, 
                          link_local_ips=None):
    """
    Create endpoint configuration for network connections.
    
    Parameters:
    - version (str): API version
    - aliases (list): Network-scoped aliases
    - links (list): Container links (deprecated)
    - ipv4_address (str): Static IPv4 address
    - ipv6_address (str): Static IPv6 address
    - link_local_ips (list): Link-local IP addresses
    
    Returns:
    dict: Endpoint configuration dictionary
    """

def convert_port_bindings(port_bindings):
    """
    Convert port bindings to Docker API format.
    
    Parameters:
    - port_bindings (dict): Port bindings mapping
    
    Returns:
    dict: Formatted port bindings for API
    """

def convert_volume_binds(binds):
    """
    Convert volume bindings to Docker API format.
    
    Parameters:
    - binds (dict|list): Volume bindings
    
    Returns:
    list: Formatted volume bindings for API
    """

def convert_filters(filters):
    """
    Convert filter dictionary to Docker API format.
    
    Parameters:
    - filters (dict): Filter conditions
    
    Returns:
    str: JSON-encoded filters for API
    """

def format_environment(environment):
    """
    Format environment variables for Docker API.
    
    Parameters:
    - environment (dict|list): Environment variables
    
    Returns:
    list: Formatted environment variables
    """

def parse_repository_tag(repo_name):
    """
    Parse repository name and tag from image specification.
    
    Parameters:
    - repo_name (str): Repository name with optional tag
    
    Returns:
    tuple: (repository, tag) where tag defaults to 'latest'
    """

def parse_host(addr, is_win32=False, tls=False):
    """
    Parse Docker host address into connection components.
    
    Parameters:
    - addr (str): Docker host address (tcp://, unix://, npipe://)
    - is_win32 (bool): Windows platform flag
    - tls (bool): TLS enabled flag
    
    Returns:
    tuple: (protocol, host, port, base_url)
    """

def parse_devices(devices):
    """
    Parse device specifications into Docker API format.
    
    Parameters:
    - devices (list): Device specifications
    
    Returns:
    list: Formatted device mappings
    """

def parse_bytes(s):
    """
    Parse byte size string into integer bytes.
    
    Parameters:
    - s (str): Size string (e.g., '512m', '1g', '2048k')
    
    Returns:
    int: Size in bytes
    """

def parse_env_file(env_file):
    """
    Parse environment file into environment variables.
    
    Parameters:
    - env_file (str): Path to environment file
    
    Returns:
    dict: Environment variables from file
    """

def split_command(command):
    """
    Split command string into array of arguments.
    
    Parameters:
    - command (str): Command string
    
    Returns:
    list: Command arguments array
    """

def normalize_links(links):
    """
    Normalize container links to standard format.
    
    Parameters:
    - links (list): Container links
    
    Returns:
    list: Normalized link specifications
    """

def mkbuildcontext(dockerfile):
    """
    Create build context from Dockerfile content.
    
    Parameters:
    - dockerfile (str): Dockerfile content
    
    Returns:
    file: File-like object containing build context
    """

def tar(path, exclude=None, dockerfile=None, fileobj=None, gzip=False):
    """
    Create tar archive from directory path.
    
    Parameters:
    - path (str): Directory path to archive
    - exclude (list): Patterns to exclude (from .dockerignore)
    - dockerfile (str): Custom Dockerfile content
    - fileobj (file): File-like object to write to
    - gzip (bool): Use gzip compression
    
    Returns:
    file: Tar archive file-like object
    """

def exclude_paths(root, patterns, dockerfile=None):
    """
    Get list of paths that should be excluded from build context.
    
    Parameters:
    - root (str): Root directory path
    - patterns (list): Exclusion patterns from .dockerignore
    - dockerfile (str): Dockerfile name
    
    Returns:
    set: Set of paths to exclude
    """

def compare_version(v1, v2):
    """
    Compare two Docker API version strings.
    
    Parameters:
    - v1 (str): First version
    - v2 (str): Second version
    
    Returns:
    int: -1 if v1 < v2, 0 if equal, 1 if v1 > v2
    """

def version_lt(v1, v2):
    """
    Check if version v1 is less than v2.
    
    Parameters:
    - v1 (str): First version
    - v2 (str): Second version
    
    Returns:
    bool: True if v1 < v2
    """

def version_gte(v1, v2):
    """
    Check if version v1 is greater than or equal to v2.
    
    Parameters:
    - v1 (str): First version
    - v2 (str): Second version
    
    Returns:
    bool: True if v1 >= v2
    """

def kwargs_from_env(ssl_version=None, assert_hostname=None, environment=None):
    """
    Get Docker client configuration from environment variables.
    
    Parameters:
    - ssl_version (str): SSL version for TLS connections
    - assert_hostname (bool): Verify hostname in TLS certificates
    - environment (dict): Environment variables dict (defaults to os.environ)
    
    Returns:
    dict: Client configuration parameters
    """

def datetime_to_timestamp(dt):
    """
    Convert datetime object to Unix timestamp.
    
    Parameters:
    - dt (datetime): Datetime object
    
    Returns:
    int: Unix timestamp
    """

def decode_json_header(header):
    """
    Decode base64 JSON header.
    
    Parameters:
    - header (str): Base64-encoded JSON header
    
    Returns:
    dict: Decoded JSON data
    """

def resolve_repository_name(repo_name):
    """
    Parse repository name and determine registry.
    
    Parameters:
    - repo_name (str): Repository name
    
    Returns:
    tuple: (registry_name, repository_name)
    """

def resolve_authconfig(authconfig, registry=None):
    """
    Resolve authentication configuration for a registry.
    
    Parameters:
    - authconfig (dict): Authentication configurations
    - registry (str): Registry URL
    
    Returns:
    dict: Authentication configuration for registry
    """

def load_config(config_path=None):
    """
    Load Docker configuration file.
    
    Parameters:
    - config_path (str): Path to config file (defaults to ~/.docker/config.json)
    
    Returns:
    dict: Docker configuration data
    """

def encode_header(auth_config):
    """
    Encode authentication configuration for HTTP header.
    
    Parameters:
    - auth_config (dict): Authentication configuration
    
    Returns:
    str: Base64-encoded authentication header
    """

def get_config_header(client, registry):
    """
    Get authentication header for registry from client configuration.
    
    Parameters:
    - client: Docker client instance
    - registry (str): Registry URL
    
    Returns:
    str: Authentication header value
    """

class TLSConfig:
    def __init__(self, client_cert=None, ca_cert=None, verify=None, 
                 ssl_version=None, assert_hostname=None, assert_fingerprint=None):
        """
        Create TLS configuration for Docker client.
        
        Parameters:
        - client_cert (tuple): (cert_file, key_file) for client authentication
        - ca_cert (str): Path to CA certificate file
        - verify (bool|str): Verify server certificate (True/False or CA path)
        - ssl_version (int): SSL version constant
        - assert_hostname (bool): Verify hostname in certificate
        - assert_fingerprint (str): Expected certificate fingerprint
        """
    
    def configure_client(self, client):
        """
        Configure requests client for TLS connections.
        
        Parameters:
        - client: Requests session client
        
        Returns:
        None
        """
    
    # Properties
    cert: tuple          # Client certificate tuple
    ca_cert: str         # CA certificate path
    verify: bool|str     # Certificate verification setting
    ssl_version: int     # SSL version
    assert_hostname: bool # Hostname verification
    assert_fingerprint: str # Certificate fingerprint

class UnixAdapter:
    def __init__(self, socket_url, timeout=60, num_pools=25):
        """
        Create Unix socket HTTP adapter.
        
        Parameters:
        - socket_url (str): Unix socket URL
        - timeout (int): Connection timeout
        - num_pools (int): Connection pool size
        """

class UnixHTTPConnection:
    """HTTP connection over Unix socket"""

class UnixHTTPConnectionPool:
    """Connection pool for Unix socket connections"""

class NpipeAdapter:
    def __init__(self, socket_url, timeout=60, num_pools=25):
        """
        Create named pipe HTTP adapter (Windows only).
        
        Parameters:
        - socket_url (str): Named pipe URL
        - timeout (int): Connection timeout
        - num_pools (int): Connection pool size
        """

class SSLAdapter:
    def __init__(self, ssl_version=None, assert_hostname=None, 
                 assert_fingerprint=None, **kwargs):
        """
        Create SSL/TLS HTTP adapter.
        
        Parameters:
        - ssl_version (int): SSL version to use
        - assert_hostname (bool): Verify hostname
        - assert_fingerprint (str): Expected certificate fingerprint
        """

def check_resource(f):
    """
    Decorator to extract resource ID from function arguments.
    
    Parameters:
    - f (function): Function to decorate
    
    Returns:
    function: Decorated function
    """

def minimum_version(version):
    """
    Decorator to require minimum Docker API version.
    
    Parameters:
    - version (str): Minimum required API version
    
    Returns:
    function: Decorator function
    """

def update_headers(f):
    """
    Decorator to automatically add authentication headers.
    
    Parameters:
    - f (function): Function to decorate
    
    Returns:
    function: Decorated function
    """

def read(socket, n=4096):
    """
    Read bytes from socket with error handling.
    
    Parameters:
    - socket: Socket object
    - n (int): Number of bytes to read
    
    Returns:
    bytes: Data read from socket
    """

def read_exactly(socket, n):
    """
    Read exact number of bytes from socket.
    
    Parameters:
    - socket: Socket object
    - n (int): Exact number of bytes to read
    
    Returns:
    bytes: Exactly n bytes of data
    """

def next_frame_size(socket):
    """
    Get size of next frame from multiplexed stream.
    
    Parameters:
    - socket: Socket object
    
    Returns:
    int: Size of next frame
    """

def frames_iter(socket):
    """
    Iterator over frames from multiplexed socket stream.
    
    Parameters:
    - socket: Socket object
    
    Yields:
    bytes: Frame data
    """

class SocketError(Exception):
    """Exception for socket operation errors"""

def split_port(port):
    """
    Parse port specification string.
    
    Parameters:
    - port (str): Port specification (e.g., '8080:80/tcp')
    
    Returns:
    tuple: (host_port, container_port, protocol)
    """

def build_port_bindings(ports):
    """
    Build port bindings dictionary from port list.
    
    Parameters:
    - ports (list): List of port specifications
    
    Returns:
    dict: Port bindings mapping
    """

import docker
from docker.types import LogConfig, Ulimit

client = docker.Client()

# Create comprehensive host configuration
host_config = client.create_host_config(
    # Volume bindings
    binds={
        '/host/data': {'bind': '/container/data', 'mode': 'rw'},
        '/host/logs': {'bind': '/container/logs', 'mode': 'rw'}
    },
    
    # Port bindings
    port_bindings={
        '8080/tcp': 8080,
        '9000/tcp': ('127.0.0.1', 9000)
    },
    
    # Resource limits
    mem_limit='512m',
    cpu_shares=512,
    ulimits=[
        Ulimit(name='nofile', soft=1024, hard=2048),
        Ulimit(name='nproc', soft=128, hard=256)
    ],
    
    # Security settings
    privileged=False,
    cap_add=['NET_ADMIN'],
    cap_drop=['MKNOD'],
    
    # Network settings
    dns=['8.8.8.8', '8.8.4.4'],
    extra_hosts=['api.example.com:192.168.1.100'],
    
    # Logging configuration
    log_config=LogConfig(
        type=LogConfig.types.JSON,
        config={'max-size': '10m', 'max-file': '3'}
    ),
    
    # Restart policy
    restart_policy={'Name': 'unless-stopped'}
)

# Create container with configuration
container = client.create_container(
    image='myapp:latest',
    command=['python', 'app.py'],
    environment={'ENV': 'production'},
    host_config=host_config,
    labels={'app': 'myservice', 'version': '1.0'}
)

from docker.auth import auth

# Load Docker configuration
config = auth.load_config()
print(f"Loaded config with {len(config.get('auths', {}))} registries")

# Resolve authentication for specific registry
auth_config = auth.resolve_authconfig(
    config.get('auths', {}),
    'registry.example.com'
)

# Use authentication for image operations
client.pull(
    'registry.example.com/private/image:latest',
    auth_config=auth_config
)

# Manual authentication configuration
manual_auth = {
    'username': 'myuser',
    'password': 'mypass',
    'serveraddress': 'https://registry.example.com'
}

# Encode for header use
auth_header = auth.encode_header(manual_auth)

from docker.tls import TLSConfig
import ssl

# Create TLS configuration for secure connection
tls_config = TLSConfig(
    client_cert=('/path/to/client-cert.pem', '/path/to/client-key.pem'),
    ca_cert='/path/to/ca.pem',
    verify=True,
    ssl_version=ssl.PROTOCOL_TLSv1_2,
    assert_hostname=False
)

# Create client with TLS
client = docker.Client(
    base_url='https://docker-daemon:2376',
    tls=tls_config
)

# Verify connection
print(client.ping())

import os
from docker.utils.utils import kwargs_from_env

# Set environment variables
os.environ['DOCKER_HOST'] = 'tcp://192.168.1.100:2376'
os.environ['DOCKER_TLS_VERIFY'] = '1'
os.environ['DOCKER_CERT_PATH'] = '/path/to/certs'

# Get client configuration from environment
client_kwargs = kwargs_from_env()
print(f"Client config: {client_kwargs}")

# Create client from environment
client = docker.Client(**client_kwargs)

# Alternative: use from_env convenience function
client = docker.from_env()

from docker.utils.utils import (
    parse_repository_tag, parse_bytes, convert_port_bindings,
    convert_volume_binds, split_command
)

# Parse repository and tag
repo, tag = parse_repository_tag('nginx:1.21-alpine')
print(f"Repository: {repo}, Tag: {tag}")

# Parse byte sizes
memory_limit = parse_bytes('512m')  # Returns 536870912
cpu_limit = parse_bytes('1g')       # Returns 1073741824

# Convert port bindings
port_bindings = convert_port_bindings({
    '8080/tcp': 8080,
    '9000/tcp': ('0.0.0.0', 9000),
    '3306/tcp': None  # Random port
})

# Convert volume bindings
volume_binds = convert_volume_binds({
    '/host/data': {'bind': '/app/data', 'mode': 'rw'},
    '/host/config': {'bind': '/app/config', 'mode': 'ro'}
})

# Split command strings
cmd_array = split_command('python -m http.server 8000')
print(f"Command array: {cmd_array}")

from docker.utils.utils import tar, exclude_paths
import tempfile

# Create build context from directory
with tar('/path/to/build/context', gzip=True) as build_context:
    # Build image using context
    for line in client.build(
        fileobj=build_context,
        tag='myapp:latest',
        custom_context=True,
        stream=True,
        decode=True
    ):
        if 'stream' in line:
            print(line['stream'].strip())

# Handle .dockerignore patterns
root_path = '/path/to/project'
dockerignore_patterns = [
    '*.pyc',
    '__pycache__/',
    '.git/',
    'node_modules/',
    '*.log'
]

excluded_paths = exclude_paths(root_path, dockerignore_patterns)
print(f"Excluding {len(excluded_paths)} paths from build context")