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"""File generation and management utilities for infrastructure providers."""
import logging
import os
import tempfile
import time
from pathlib import Path
from typing import Optional, Union
import hashlib
logger = logging.getLogger(__name__)
class FileManager:
"""Utility class for managing temporary files and directories."""
def __init__(self, base_dir: Optional[Union[str, Path]] = None):
"""
Initialize the file manager.
Args:
base_dir: Base directory for file operations (defaults to system temp)
"""
if base_dir:
self.base_dir = Path(base_dir)
else:
self.base_dir = Path(tempfile.gettempdir()) / "tts_app"
self.base_dir.mkdir(exist_ok=True)
logger.info(f"FileManager initialized with base directory: {self.base_dir}")
def create_temp_file(self, suffix: str = ".tmp", prefix: str = "temp", content: bytes = None) -> Path:
"""
Create a temporary file.
Args:
suffix: File suffix/extension
prefix: File prefix
content: Optional content to write to the file
Returns:
Path: Path to the created temporary file
"""
timestamp = int(time.time() * 1000)
filename = f"{prefix}_{timestamp}{suffix}"
file_path = self.base_dir / filename
if content:
with open(file_path, 'wb') as f:
f.write(content)
else:
file_path.touch()
logger.info(f"Created temporary file: {file_path}")
return file_path
def create_unique_filename(self, base_name: str, extension: str = "", content_hash: bool = False, content: bytes = None) -> str:
"""
Create a unique filename.
Args:
base_name: Base name for the file
extension: File extension (with or without dot)
content_hash: Whether to include content hash in filename
content: Content to hash (required if content_hash=True)
Returns:
str: Unique filename
"""
timestamp = int(time.time() * 1000)
if not extension.startswith('.') and extension:
extension = '.' + extension
filename = f"{base_name}_{timestamp}"
if content_hash and content:
hash_obj = hashlib.md5(content)
content_hash_str = hash_obj.hexdigest()[:8]
filename += f"_{content_hash_str}"
filename += extension
return filename
def save_audio_file(self, audio_data: bytes, format: str = "wav", prefix: str = "audio") -> Path:
"""
Save audio data to a file.
Args:
audio_data: Raw audio data
format: Audio format (wav, mp3, etc.)
prefix: Filename prefix
Returns:
Path: Path to the saved audio file
"""
if not format.startswith('.'):
format = '.' + format
filename = self.create_unique_filename(prefix, format, content_hash=True, content=audio_data)
file_path = self.base_dir / filename
with open(file_path, 'wb') as f:
f.write(audio_data)
logger.info(f"Saved audio file: {file_path} ({len(audio_data)} bytes)")
return file_path
def save_text_file(self, text_content: str, encoding: str = "utf-8", prefix: str = "text") -> Path:
"""
Save text content to a file.
Args:
text_content: Text content to save
encoding: Text encoding
prefix: Filename prefix
Returns:
Path: Path to the saved text file
"""
filename = self.create_unique_filename(prefix, ".txt")
file_path = self.base_dir / filename
with open(file_path, 'w', encoding=encoding) as f:
f.write(text_content)
logger.info(f"Saved text file: {file_path} ({len(text_content)} characters)")
return file_path
def cleanup_file(self, file_path: Union[str, Path]) -> bool:
"""
Clean up a single file.
Args:
file_path: Path to the file to clean up
Returns:
bool: True if file was successfully deleted, False otherwise
"""
try:
path = Path(file_path)
if path.exists() and path.is_file():
path.unlink()
logger.info(f"Cleaned up file: {path}")
return True
return False
except Exception as e:
logger.warning(f"Failed to cleanup file {file_path}: {str(e)}")
return False
def cleanup_old_files(self, max_age_hours: int = 24, pattern: str = "*") -> int:
"""
Clean up old files in the base directory.
Args:
max_age_hours: Maximum age of files to keep in hours
pattern: File pattern to match (glob pattern)
Returns:
int: Number of files cleaned up
"""
try:
current_time = time.time()
max_age_seconds = max_age_hours * 3600
cleaned_count = 0
for file_path in self.base_dir.glob(pattern):
if file_path.is_file():
file_age = current_time - file_path.stat().st_mtime
if file_age > max_age_seconds:
if self.cleanup_file(file_path):
cleaned_count += 1
if cleaned_count > 0:
logger.info(f"Cleaned up {cleaned_count} old files")
return cleaned_count
except Exception as e:
logger.error(f"Failed to cleanup old files: {str(e)}")
return 0
def get_file_info(self, file_path: Union[str, Path]) -> dict:
"""
Get information about a file.
Args:
file_path: Path to the file
Returns:
dict: File information
"""
try:
path = Path(file_path)
if not path.exists():
return {'exists': False}
stat = path.stat()
return {
'exists': True,
'size_bytes': stat.st_size,
'created_time': stat.st_ctime,
'modified_time': stat.st_mtime,
'is_file': path.is_file(),
'is_directory': path.is_dir(),
'extension': path.suffix,
'name': path.name,
'parent': str(path.parent)
}
except Exception as e:
logger.error(f"Failed to get file info for {file_path}: {str(e)}")
return {'exists': False, 'error': str(e)}
def ensure_directory(self, dir_path: Union[str, Path]) -> Path:
"""
Ensure a directory exists, creating it if necessary.
Args:
dir_path: Path to the directory
Returns:
Path: Path to the directory
"""
path = Path(dir_path)
path.mkdir(parents=True, exist_ok=True)
logger.info(f"Ensured directory exists: {path}")
return path
def get_disk_usage(self) -> dict:
"""
Get disk usage information for the base directory.
Returns:
dict: Disk usage information
"""
try:
total_size = 0
file_count = 0
for file_path in self.base_dir.rglob('*'):
if file_path.is_file():
total_size += file_path.stat().st_size
file_count += 1
return {
'base_directory': str(self.base_dir),
'total_size_bytes': total_size,
'total_size_mb': total_size / (1024 * 1024),
'file_count': file_count
}
except Exception as e:
logger.error(f"Failed to get disk usage: {str(e)}")
return {'error': str(e)}
class AudioFileGenerator:
"""Utility class for generating audio files from raw audio data."""
@staticmethod
def save_wav_file(audio_data: bytes, sample_rate: int, file_path: Union[str, Path], channels: int = 1, sample_width: int = 2) -> Path:
"""
Save raw audio data as a WAV file.
Args:
audio_data: Raw audio data
sample_rate: Sample rate in Hz
file_path: Output file path
channels: Number of audio channels
sample_width: Sample width in bytes
Returns:
Path: Path to the saved WAV file
"""
try:
import wave
path = Path(file_path)
with wave.open(str(path), 'wb') as wav_file:
wav_file.setnchannels(channels)
wav_file.setsampwidth(sample_width)
wav_file.setframerate(sample_rate)
wav_file.writeframes(audio_data)
logger.info(f"Saved WAV file: {path} (sample_rate={sample_rate}, channels={channels})")
return path
except Exception as e:
logger.error(f"Failed to save WAV file: {str(e)}")
raise
@staticmethod
def convert_numpy_to_wav(audio_array, sample_rate: int, file_path: Union[str, Path]) -> Path:
"""
Convert numpy array to WAV file.
Args:
audio_array: Numpy array containing audio data
sample_rate: Sample rate in Hz
file_path: Output file path
Returns:
Path: Path to the saved WAV file
"""
try:
import numpy as np
import soundfile as sf
path = Path(file_path)
# Ensure audio is in the correct format
if audio_array.dtype != np.float32:
audio_array = audio_array.astype(np.float32)
# Normalize if needed
if np.max(np.abs(audio_array)) > 1.0:
audio_array = audio_array / np.max(np.abs(audio_array))
sf.write(str(path), audio_array, sample_rate)
logger.info(f"Converted numpy array to WAV: {path}")
return path
except ImportError:
logger.error("soundfile library not available for numpy conversion")
raise
except Exception as e:
logger.error(f"Failed to convert numpy array to WAV: {str(e)}")
raise
class ErrorHandler:
"""Utility class for handling and logging errors in infrastructure providers."""
def __init__(self, provider_name: str):
"""
Initialize the error handler.
Args:
provider_name: Name of the provider for error context
"""
self.provider_name = provider_name
self.logger = logging.getLogger(f"{__name__}.{provider_name}")
def handle_error(self, error: Exception, context: str = "", reraise_as: type = None) -> None:
"""
Handle an error with proper logging and optional re-raising.
Args:
error: The original error
context: Additional context about when the error occurred
reraise_as: Exception type to re-raise as (if None, re-raises original)
"""
error_msg = f"{self.provider_name} error"
if context:
error_msg += f" during {context}"
error_msg += f": {str(error)}"
self.logger.error(error_msg, exception=error)
if reraise_as:
raise reraise_as(error_msg) from error
else:
raise
def log_warning(self, message: str, context: str = "") -> None:
"""
Log a warning message.
Args:
message: Warning message
context: Additional context
"""
warning_msg = f"{self.provider_name}"
if context:
warning_msg += f" ({context})"
warning_msg += f": {message}"
self.logger.warning(warning_msg)
def log_info(self, message: str, context: str = "") -> None:
"""
Log an info message.
Args:
message: Info message
context: Additional context
"""
info_msg = f"{self.provider_name}"
if context:
info_msg += f" ({context})"
info_msg += f": {message}"
self.logger.info(info_msg)
def log_debug(self, message: str, context: str = "") -> None:
"""
Log a debug message.
Args:
message: Debug message
context: Additional context
"""
debug_msg = f"{self.provider_name}"
if context:
debug_msg += f" ({context})"
debug_msg += f": {message}"
self.logger.info(debug_msg) |