150 lines
4.4 KiB
Python
150 lines
4.4 KiB
Python
import hashlib
|
|
import logging
|
|
import os
|
|
import uuid
|
|
from typing import Any, Optional
|
|
|
|
import allure
|
|
from common import ASSETS_DIR, SIMPLE_OBJ_SIZE
|
|
|
|
logger = logging.getLogger("NeoLogger")
|
|
|
|
|
|
def generate_file(size: int = SIMPLE_OBJ_SIZE) -> str:
|
|
"""Generates a binary file with the specified size in bytes.
|
|
|
|
Args:
|
|
size: Size in bytes, can be declared as 6e+6 for example.
|
|
|
|
Returns:
|
|
The path to the generated file.
|
|
"""
|
|
file_path = os.path.join(os.getcwd(), ASSETS_DIR, str(uuid.uuid4()))
|
|
with open(file_path, "wb") as file:
|
|
file.write(os.urandom(size))
|
|
logger.info(f"File with size {size} bytes has been generated: {file_path}")
|
|
|
|
return file_path
|
|
|
|
|
|
def generate_file_with_content(
|
|
file_path: Optional[str] = None,
|
|
content: Optional[str] = None,
|
|
) -> str:
|
|
"""Creates a new file with specified content.
|
|
|
|
Args:
|
|
file_path: Path to the file that should be created. If not specified, then random file
|
|
path will be generated.
|
|
content: Content that should be stored in the file. If not specified, then random binary
|
|
content will be generated.
|
|
|
|
Returns:
|
|
Path to the generated file.
|
|
"""
|
|
mode = "w+"
|
|
if content is None:
|
|
content = os.urandom(SIMPLE_OBJ_SIZE)
|
|
mode = "wb"
|
|
|
|
if not file_path:
|
|
file_path = os.path.join(os.getcwd(), ASSETS_DIR, str(uuid.uuid4()))
|
|
else:
|
|
if not os.path.exists(os.path.dirname(file_path)):
|
|
os.makedirs(os.path.dirname(file_path))
|
|
|
|
with open(file_path, mode) as file:
|
|
file.write(content)
|
|
|
|
return file_path
|
|
|
|
|
|
@allure.step("Get File Hash")
|
|
def get_file_hash(file_path: str, len: Optional[int] = None) -> str:
|
|
"""Generates hash for the specified file.
|
|
|
|
Args:
|
|
file_path: Path to the file to generate hash for.
|
|
len: How many bytes to read.
|
|
|
|
Returns:
|
|
Hash of the file as hex-encoded string.
|
|
"""
|
|
file_hash = hashlib.sha256()
|
|
with open(file_path, "rb") as out:
|
|
if len:
|
|
file_hash.update(out.read(len))
|
|
else:
|
|
file_hash.update(out.read())
|
|
return file_hash.hexdigest()
|
|
|
|
|
|
@allure.step("Concatenation set of files to one file")
|
|
def concat_files(file_paths: list, resulting_file_path: Optional[str] = None) -> str:
|
|
"""Concatenates several files into a single file.
|
|
|
|
Args:
|
|
file_paths: Paths to the files to concatenate.
|
|
resulting_file_name: Path to the file where concatenated content should be stored.
|
|
|
|
Returns:
|
|
Path to the resulting file.
|
|
"""
|
|
if not resulting_file_path:
|
|
resulting_file_path = os.path.join(os.getcwd(), ASSETS_DIR, str(uuid.uuid4()))
|
|
with open(resulting_file_path, "wb") as f:
|
|
for file in file_paths:
|
|
with open(file, "rb") as part_file:
|
|
f.write(part_file.read())
|
|
return resulting_file_path
|
|
|
|
|
|
def split_file(file_path: str, parts: int) -> list[str]:
|
|
"""Splits specified file into several specified number of parts.
|
|
|
|
Each part is saved under name `{original_file}_part_{i}`.
|
|
|
|
Args:
|
|
file_path: Path to the file that should be split.
|
|
parts: Number of parts the file should be split into.
|
|
|
|
Returns:
|
|
Paths to the part files.
|
|
"""
|
|
with open(file_path, "rb") as file:
|
|
content = file.read()
|
|
|
|
content_size = len(content)
|
|
chunk_size = int((content_size + parts) / parts)
|
|
|
|
part_id = 1
|
|
part_file_paths = []
|
|
for content_offset in range(0, content_size + 1, chunk_size):
|
|
part_file_name = f"{file_path}_part_{part_id}"
|
|
part_file_paths.append(part_file_name)
|
|
with open(part_file_name, "wb") as out_file:
|
|
out_file.write(content[content_offset : content_offset + chunk_size])
|
|
part_id += 1
|
|
|
|
return part_file_paths
|
|
|
|
|
|
def get_file_content(file_path: str, content_len: Optional[int] = None, mode: str = "r") -> Any:
|
|
"""Returns content of specified file.
|
|
|
|
Args:
|
|
file_path: Path to the file.
|
|
content_len: Limit of content length. If None, then entire file content is returned;
|
|
otherwise only the first content_len bytes of the content are returned.
|
|
mode: Mode of opening the file.
|
|
|
|
Returns:
|
|
Content of the specified file.
|
|
"""
|
|
with open(file_path, mode) as file:
|
|
if content_len:
|
|
content = file.read(content_len)
|
|
else:
|
|
content = file.read()
|
|
|
|
return content
|