ai_v/venv/Lib/site-packages/boto3/s3/transfer.py
24024 af7c11d7f9 feat(api): 实现图像生成及后台同步功能
- 新增图像生成接口,支持试用、积分和自定义API Key模式
- 实现生成图片结果异步上传至MinIO存储,带重试机制
- 优化积分预扣除和异常退还逻辑,保障用户积分准确
- 添加获取生成历史记录接口,支持时间范围和分页
- 提供本地字典配置接口,支持模型、比例、提示模板和尺寸
- 实现图片批量上传接口,支持S3兼容对象存储

feat(admin): 增加管理员角色管理与权限分配接口

- 实现角色列表查询、角色创建、更新及删除功能
- 增加权限列表查询接口
- 实现用户角色分配接口,便于统一管理用户权限
- 增加系统字典增删查改接口,支持分类过滤和排序
- 权限控制全面覆盖管理接口,保证安全访问

feat(auth): 完善用户登录注册及权限相关接口与页面

- 实现手机号验证码发送及校验功能,保障注册安全
- 支持手机号注册、登录及退出接口,集成日志记录
- 增加修改密码功能,验证原密码后更新
- 提供动态导航菜单接口,基于权限展示不同菜单
- 实现管理界面路由及日志、角色、字典管理页面访问权限控制
- 添加系统日志查询接口,支持关键词和等级筛选

feat(app): 初始化Flask应用并配置蓝图与数据库

- 创建应用程序工厂,加载配置,初始化数据库和Redis客户端
- 注册认证、API及管理员蓝图,整合路由
- 根路由渲染主页模板
- 应用上下文中自动创建数据库表,保证运行环境准备完毕

feat(database): 提供数据库创建与迁移支持脚本

- 新增数据库创建脚本,支持自动检测是否已存在
- 添加数据库表初始化脚本,支持创建和删除所有表
- 实现RBAC权限初始化,包含基础权限和角色创建
- 新增字段手动修复脚本,添加用户API Key和积分字段
- 强制迁移脚本支持清理连接和修复表结构,初始化默认数据及角色分配

feat(config): 新增系统配置参数

- 配置数据库、Redis、Session和MinIO相关参数
- 添加AI接口地址及试用Key配置
- 集成阿里云短信服务配置及开发模式相关参数

feat(extensions): 初始化数据库、Redis和MinIO客户端

- 创建全局SQLAlchemy数据库实例和Redis客户端
- 配置基于boto3的MinIO兼容S3客户端

chore(logs): 添加示例系统日志文件

- 记录用户请求、验证码发送成功与失败的日志信息
2026-01-12 00:53:31 +08:00

517 lines
19 KiB
Python

# Copyright 2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
# https://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
# ANY KIND, either express or implied. See the License for the specific
# language governing permissions and limitations under the License.
"""Abstractions over S3's upload/download operations.
This module provides high level abstractions for efficient
uploads/downloads. It handles several things for the user:
* Automatically switching to multipart transfers when
a file is over a specific size threshold
* Uploading/downloading a file in parallel
* Progress callbacks to monitor transfers
* Retries. While botocore handles retries for streaming uploads,
it is not possible for it to handle retries for streaming
downloads. This module handles retries for both cases so
you don't need to implement any retry logic yourself.
This module has a reasonable set of defaults. It also allows you
to configure many aspects of the transfer process including:
* Multipart threshold size
* Max parallel downloads
* Socket timeouts
* Retry amounts
There is no support for s3->s3 multipart copies at this
time.
.. _ref_s3transfer_usage:
Usage
=====
The simplest way to use this module is:
.. code-block:: python
client = boto3.client('s3', 'us-west-2')
transfer = S3Transfer(client)
# Upload /tmp/myfile to s3://bucket/key
transfer.upload_file('/tmp/myfile', 'bucket', 'key')
# Download s3://bucket/key to /tmp/myfile
transfer.download_file('bucket', 'key', '/tmp/myfile')
The ``upload_file`` and ``download_file`` methods also accept
``**kwargs``, which will be forwarded through to the corresponding
client operation. Here are a few examples using ``upload_file``::
# Making the object public
transfer.upload_file('/tmp/myfile', 'bucket', 'key',
extra_args={'ACL': 'public-read'})
# Setting metadata
transfer.upload_file('/tmp/myfile', 'bucket', 'key',
extra_args={'Metadata': {'a': 'b', 'c': 'd'}})
# Setting content type
transfer.upload_file('/tmp/myfile.json', 'bucket', 'key',
extra_args={'ContentType': "application/json"})
The ``S3Transfer`` class also supports progress callbacks so you can
provide transfer progress to users. Both the ``upload_file`` and
``download_file`` methods take an optional ``callback`` parameter.
Here's an example of how to print a simple progress percentage
to the user:
.. code-block:: python
class ProgressPercentage(object):
def __init__(self, filename):
self._filename = filename
self._size = float(os.path.getsize(filename))
self._seen_so_far = 0
self._lock = threading.Lock()
def __call__(self, bytes_amount):
# To simplify we'll assume this is hooked up
# to a single filename.
with self._lock:
self._seen_so_far += bytes_amount
percentage = (self._seen_so_far / self._size) * 100
sys.stdout.write(
"\r%s %s / %s (%.2f%%)" % (
self._filename, self._seen_so_far, self._size,
percentage))
sys.stdout.flush()
transfer = S3Transfer(boto3.client('s3', 'us-west-2'))
# Upload /tmp/myfile to s3://bucket/key and print upload progress.
transfer.upload_file('/tmp/myfile', 'bucket', 'key',
callback=ProgressPercentage('/tmp/myfile'))
You can also provide a TransferConfig object to the S3Transfer
object that gives you more fine grained control over the
transfer. For example:
.. code-block:: python
client = boto3.client('s3', 'us-west-2')
config = TransferConfig(
multipart_threshold=8 * 1024 * 1024,
max_concurrency=10,
num_download_attempts=10,
)
transfer = S3Transfer(client, config)
transfer.upload_file('/tmp/foo', 'bucket', 'key')
"""
import logging
import threading
from os import PathLike, fspath, getpid
from botocore.compat import HAS_CRT
from botocore.exceptions import ClientError, MissingDependencyException
from s3transfer.exceptions import (
RetriesExceededError as S3TransferRetriesExceededError,
)
from s3transfer.futures import NonThreadedExecutor
from s3transfer.manager import TransferConfig as S3TransferConfig
from s3transfer.manager import TransferManager
from s3transfer.subscribers import BaseSubscriber
from s3transfer.utils import OSUtils
import boto3.s3.constants as constants
from boto3.compat import TRANSFER_CONFIG_SUPPORTS_CRT
from boto3.exceptions import (
RetriesExceededError,
S3UploadFailedError,
)
if HAS_CRT:
import awscrt.s3
from boto3.crt import create_crt_transfer_manager
KB = 1024
MB = KB * KB
logger = logging.getLogger(__name__)
def create_transfer_manager(client, config, osutil=None):
"""Creates a transfer manager based on configuration
:type client: boto3.client
:param client: The S3 client to use
:type config: boto3.s3.transfer.TransferConfig
:param config: The transfer config to use
:type osutil: s3transfer.utils.OSUtils
:param osutil: The os utility to use
:rtype: s3transfer.manager.TransferManager
:returns: A transfer manager based on parameters provided
"""
if _should_use_crt(config):
crt_transfer_manager = create_crt_transfer_manager(client, config)
if crt_transfer_manager is not None:
logger.debug(
"Using CRT client. pid: %s, thread: %s",
getpid(),
threading.get_ident(),
)
return crt_transfer_manager
# If we don't resolve something above, fallback to the default.
logger.debug(
"Using default client. pid: %s, thread: %s",
getpid(),
threading.get_ident(),
)
return _create_default_transfer_manager(client, config, osutil)
def _should_use_crt(config):
# This feature requires awscrt>=0.19.18
has_min_crt = HAS_CRT and has_minimum_crt_version((0, 19, 18))
is_optimized_instance = has_min_crt and awscrt.s3.is_optimized_for_system()
pref_transfer_client = config.preferred_transfer_client.lower()
if (
pref_transfer_client == constants.CRT_TRANSFER_CLIENT
and not has_min_crt
):
msg = (
"CRT transfer client is configured but is missing minimum CRT "
f"version. CRT installed: {HAS_CRT}"
)
if HAS_CRT:
msg += f", with version: {awscrt.__version__}"
raise MissingDependencyException(msg=msg)
if (
is_optimized_instance
and pref_transfer_client == constants.AUTO_RESOLVE_TRANSFER_CLIENT
) or pref_transfer_client == constants.CRT_TRANSFER_CLIENT:
logger.debug(
"Attempting to use CRTTransferManager. Config settings may be ignored."
)
return True
logger.debug(
"Opting out of CRT Transfer Manager. "
"Preferred client: %s, CRT available: %s, Instance Optimized: %s",
pref_transfer_client,
HAS_CRT,
is_optimized_instance,
)
return False
def has_minimum_crt_version(minimum_version):
"""Not intended for use outside boto3."""
if not HAS_CRT:
return False
crt_version_str = awscrt.__version__
try:
crt_version_ints = map(int, crt_version_str.split("."))
crt_version_tuple = tuple(crt_version_ints)
except (TypeError, ValueError):
return False
return crt_version_tuple >= minimum_version
def _create_default_transfer_manager(client, config, osutil):
"""Create the default TransferManager implementation for s3transfer."""
executor_cls = None
if not config.use_threads:
executor_cls = NonThreadedExecutor
return TransferManager(client, config, osutil, executor_cls)
class TransferConfig(S3TransferConfig):
ALIAS = {
'max_concurrency': 'max_request_concurrency',
'max_io_queue': 'max_io_queue_size',
}
DEFAULTS = {
'multipart_threshold': 8 * MB,
'max_concurrency': 10,
'max_request_concurrency': 10,
'multipart_chunksize': 8 * MB,
'num_download_attempts': 5,
'max_io_queue': 100,
'max_io_queue_size': 100,
'io_chunksize': 256 * KB,
'use_threads': True,
'max_bandwidth': None,
'preferred_transfer_client': constants.AUTO_RESOLVE_TRANSFER_CLIENT,
}
def __init__(
self,
multipart_threshold=None,
max_concurrency=None,
multipart_chunksize=None,
num_download_attempts=None,
max_io_queue=None,
io_chunksize=None,
use_threads=None,
max_bandwidth=None,
preferred_transfer_client=None,
):
"""Configuration object for managed S3 transfers
:param multipart_threshold: The transfer size threshold for which
multipart uploads, downloads, and copies will automatically be
triggered.
:param max_concurrency: The maximum number of threads that will be
making requests to perform a transfer. If ``use_threads`` is
set to ``False``, the value provided is ignored as the transfer
will only ever use the current thread.
:param multipart_chunksize: The partition size of each part for a
multipart transfer.
:param num_download_attempts: The number of download attempts that
will be retried upon errors with downloading an object in S3.
Note that these retries account for errors that occur when
streaming down the data from s3 (i.e. socket errors and read
timeouts that occur after receiving an OK response from s3).
Other retryable exceptions such as throttling errors and 5xx
errors are already retried by botocore (this default is 5). This
does not take into account the number of exceptions retried by
botocore. Note: This value is ignored when resolved transfer
manager type is CRTTransferManager.
:param max_io_queue: The maximum amount of read parts that can be
queued in memory to be written for a download. The size of each
of these read parts is at most the size of ``io_chunksize``.
Note: This value is ignored when resolved transfer manager type
is CRTTransferManager.
:param io_chunksize: The max size of each chunk in the io queue.
Currently, this is size used when ``read`` is called on the
downloaded stream as well. Note: This value is ignored when
resolved transfer manager type is CRTTransferManager.
:param use_threads: If True, threads will be used when performing
S3 transfers. If False, no threads will be used in
performing transfers; all logic will be run in the current thread.
Note: This value is ignored when resolved transfer manager type is
CRTTransferManager.
:param max_bandwidth: The maximum bandwidth that will be consumed
in uploading and downloading file content. The value is an integer
in terms of bytes per second. Note: This value is ignored when
resolved transfer manager type is CRTTransferManager.
:param preferred_transfer_client: String specifying preferred transfer
client for transfer operations.
Current supported settings are:
* auto (default) - Use the CRTTransferManager when calls
are made with supported environment and settings.
* classic - Only use the origin S3TransferManager with
requests. Disables possible CRT upgrade on requests.
* crt - Only use the CRTTransferManager with requests.
"""
init_args = {
'multipart_threshold': multipart_threshold,
'max_concurrency': max_concurrency,
'multipart_chunksize': multipart_chunksize,
'num_download_attempts': num_download_attempts,
'max_io_queue': max_io_queue,
'io_chunksize': io_chunksize,
'use_threads': use_threads,
'max_bandwidth': max_bandwidth,
'preferred_transfer_client': preferred_transfer_client,
}
resolved = self._resolve_init_args(init_args)
super().__init__(
multipart_threshold=resolved['multipart_threshold'],
max_request_concurrency=resolved['max_concurrency'],
multipart_chunksize=resolved['multipart_chunksize'],
num_download_attempts=resolved['num_download_attempts'],
max_io_queue_size=resolved['max_io_queue'],
io_chunksize=resolved['io_chunksize'],
max_bandwidth=resolved['max_bandwidth'],
)
# Some of the argument names are not the same as the inherited
# S3TransferConfig so we add aliases so you can still access the
# old version of the names.
for alias in self.ALIAS:
setattr(
self,
alias,
object.__getattribute__(self, self.ALIAS[alias]),
)
self.use_threads = resolved['use_threads']
self.preferred_transfer_client = resolved['preferred_transfer_client']
def __setattr__(self, name, value):
# If the alias name is used, make sure we set the name that it points
# to as that is what actually is used in governing the TransferManager.
if name in self.ALIAS:
super().__setattr__(self.ALIAS[name], value)
# Always set the value of the actual name provided.
super().__setattr__(name, value)
def __getattribute__(self, item):
value = object.__getattribute__(self, item)
if not TRANSFER_CONFIG_SUPPORTS_CRT:
return value
defaults = object.__getattribute__(self, 'DEFAULTS')
if item not in defaults:
return value
if value is self.UNSET_DEFAULT:
return defaults[item]
return value
def _resolve_init_args(self, init_args):
resolved = {}
for init_arg, val in init_args.items():
if val is not None:
resolved[init_arg] = val
elif TRANSFER_CONFIG_SUPPORTS_CRT:
resolved[init_arg] = self.UNSET_DEFAULT
else:
resolved[init_arg] = self.DEFAULTS[init_arg]
return resolved
class S3Transfer:
ALLOWED_DOWNLOAD_ARGS = TransferManager.ALLOWED_DOWNLOAD_ARGS
ALLOWED_UPLOAD_ARGS = TransferManager.ALLOWED_UPLOAD_ARGS
ALLOWED_COPY_ARGS = TransferManager.ALLOWED_COPY_ARGS
def __init__(self, client=None, config=None, osutil=None, manager=None):
if not client and not manager:
raise ValueError(
'Either a boto3.Client or s3transfer.manager.TransferManager '
'must be provided'
)
if manager and any([client, config, osutil]):
raise ValueError(
'Manager cannot be provided with client, config, '
'nor osutil. These parameters are mutually exclusive.'
)
if config is None:
config = TransferConfig()
if osutil is None:
osutil = OSUtils()
if manager:
self._manager = manager
else:
self._manager = create_transfer_manager(client, config, osutil)
def upload_file(
self, filename, bucket, key, callback=None, extra_args=None
):
"""Upload a file to an S3 object.
Variants have also been injected into S3 client, Bucket and Object.
You don't have to use S3Transfer.upload_file() directly.
.. seealso::
:py:meth:`S3.Client.upload_file`
:py:meth:`S3.Client.upload_fileobj`
"""
if isinstance(filename, PathLike):
filename = fspath(filename)
if not isinstance(filename, str):
raise ValueError('Filename must be a string or a path-like object')
subscribers = self._get_subscribers(callback)
future = self._manager.upload(
filename, bucket, key, extra_args, subscribers
)
try:
future.result()
# If a client error was raised, add the backwards compatibility layer
# that raises a S3UploadFailedError. These specific errors were only
# ever thrown for upload_parts but now can be thrown for any related
# client error.
except ClientError as e:
raise S3UploadFailedError(
f"Failed to upload {filename} to {bucket}/{key}: {e}"
)
def download_file(
self, bucket, key, filename, extra_args=None, callback=None
):
"""Download an S3 object to a file.
Variants have also been injected into S3 client, Bucket and Object.
You don't have to use S3Transfer.download_file() directly.
.. seealso::
:py:meth:`S3.Client.download_file`
:py:meth:`S3.Client.download_fileobj`
"""
if isinstance(filename, PathLike):
filename = fspath(filename)
if not isinstance(filename, str):
raise ValueError('Filename must be a string or a path-like object')
subscribers = self._get_subscribers(callback)
future = self._manager.download(
bucket, key, filename, extra_args, subscribers
)
try:
future.result()
# This is for backwards compatibility where when retries are
# exceeded we need to throw the same error from boto3 instead of
# s3transfer's built in RetriesExceededError as current users are
# catching the boto3 one instead of the s3transfer exception to do
# their own retries.
except S3TransferRetriesExceededError as e:
raise RetriesExceededError(e.last_exception)
def _get_subscribers(self, callback):
if not callback:
return None
return [ProgressCallbackInvoker(callback)]
def __enter__(self):
return self
def __exit__(self, *args):
self._manager.__exit__(*args)
class ProgressCallbackInvoker(BaseSubscriber):
"""A back-compat wrapper to invoke a provided callback via a subscriber
:param callback: A callable that takes a single positional argument for
how many bytes were transferred.
"""
def __init__(self, callback):
self._callback = callback
def on_progress(self, bytes_transferred, **kwargs):
self._callback(bytes_transferred)