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A middleware to change proxy rotated for Scrapy

Project description

PyPI Version Build Status

Overview

Scrapy-Rotated-Proxy is a Scrapy downloadmiddleware to dynamically attach proxy to Request, which can repeately use rotated proxies supplied by configuration. It can temporarily block unavailable proxy ip and retrieve to use in the future when the proxy is available. Also, it can remove invalid proxy ip through Scrapy signal. Proxy ip list can be supplied through Spider Settings, File or MongoDB.

Requirements

  • Python 2.7 or Python 3.3+
  • Works on Linux, Windows, Mac OSX, BSD

Install

The quick way:

pip install scrapy-rotated-proxy

OR copy this middleware to your scrapy project.

Configuration

Basic Configuration

Enable with Spider Settings

enable scrapy-rotated-proxy middleware and supply proxy ip list through Spider Settings

# -----------------------------------------------------------------------------
# ROTATED PROXY SETTINGS (Spider Settings Backend)
# -----------------------------------------------------------------------------
DOWNLOADER_MIDDLEWARES.update({
    'scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware': None,
    'scrapy_rotated_proxy.downloadmiddlewares.proxy.RotatedProxyMiddleware': 750,
})
ROTATED_PROXY_ENABLED = True
PROXY_STORAGE = 'scrapy_rotated_proxy.extensions.file_storage.FileProxyStorage'
# When set PROXY_FILE_PATH='', scrapy-rotated-proxy
# will use proxy in Spider Settings default.
PROXY_FILE_PATH = ''
HTTP_PROXIES = [
    'http://proxy0:8888',
    'http://user:pass@proxy1:8888',
    'https://user:pass@proxy1:8888',
]
HTTPS_PROXIES = [
    'http://proxy0:8888',
    'http://user:pass@proxy1:8888',
    'https://user:pass@proxy1:8888',
]

Enable with Local File

enable scrapy-rotated-proxy middleware and supply proxy ip list through Local File

# -----------------------------------------------------------------------------
# ROTATED PROXY SETTINGS (Local File Backend)
# -----------------------------------------------------------------------------
DOWNLOADER_MIDDLEWARES.update({
    'scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware': None,
    'scrapy_rotated_proxy.downloadmiddlewares.proxy.RotatedProxyMiddleware': 750,
})
ROTATED_PROXY_ENABLED = True
PROXY_STORAGE = 'scrapy_rotated_proxy.extensions.file_storage.FileProxyStorage'
PROXY_FILE_PATH = 'file_path/proxy.txt'

local file store proxy list with json style

# proxy file content, must conform to json format, otherwise will cause json
# load error
HTTP_PROXIES = [
    'http://proxy0:8888',
    'http://user:pass@proxy1:8888',
    'https://user:pass@proxy1:8888'
]
HTTPS_PROXIES = [
    'http://proxy0:8888',
    'http://user:pass@proxy1:8888',
    'https://user:pass@proxy1:8888'
]

Enable with MongoDB

enable scrapy-rotated-proxy middleware and supply proxy ip list through MongoDB

# -----------------------------------------------------------------------------
# ROTATED PROXY SETTINGS (MongoDB Backend)
# -----------------------------------------------------------------------------
# mongodb document required field: scheme, ip, port, username, password
# document example: {'scheme': 'http', 'ip': '10.0.0.1', 'port': 8080,
# 'username':'user', 'password':'password'}
DOWNLOADER_MIDDLEWARES.update({
    'scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware': None,
    'scrapy_rotated_proxy.downloadmiddlewares.proxy.RotatedProxyMiddleware': 750,
})
ROTATED_PROXY_ENABLED = True
PROXY_STORAGE = 'scrapy_rotated_proxy.extensions.mongodb_storage.MongoDBProxyStorage'
PROXY_MONGODB_HOST = HOST_OR_IP
PROXY_MONGODB_PORT = 27017
PROXY_MONGODB_USERNAME = USERNAME_OR_NONE
PROXY_MONGODB_PASSWORD = PASSWORD_OR_NONE
PROXY_MONGODB_AUTH_DB = 'admin'
PROXY_MONGODB_DB = 'vps_management'
PROXY_MONGODB_COLL = 'service'

Advanced Configuration

Block Settings

Default, spider will close when run out of all proxies. you can config spider to wait until block proxies become valid, which you block by signal

# -----------------------------------------------------------------------------
# OTHER SETTINGS (Optional)
# -----------------------------------------------------------------------------
PROXY_SLEEP_INTERVAL = 60*60*24  # Default 24hours
PROXY_SPIDER_CLOSE_WHEN_NO_PROXY = False # Default True

Signals

Remove proxy that never be used in the spider, you can send signal to scrapy_rotated_proxy.signals.proxy_remove, which signal must contains arguments including spider, request, exception

Block proxy that can be used in the future after sleep interval reach, you can send signal to scrapy_rotated_proxy.signals.proxy_block, which signal must contains arguments including spider, response, exception

Settings Reference

Setting Description Default
ROTATED_PROXY_ENABLED Whether to enable Scrapy-Rotated-Proxy True
PROXY_STORAGE A class which implements the proxy storage backend FileProxyStorage
PROXY_MONGODB_HOST MongoDB host for MongoDB backend ‘127.0.0.1’
PROXY_MONGODB_PORT MongoDB port for MongoDB backend 27017
PROXY_MONGODB_USERNAME MongoDB username for MongoDB backend None
PROXY_MOGNODB_PASSWORD MongoDB password for MongoDB backend None
PROXY_MONGODB_DB MongoDB database name for MongoDB backend proxy_management
PROXY_MONGODB_COLL MongoDB collection name for MongoDB backend proxy
PROXY_MONGODB_OPTIONS_* MongoDB uri options for MongoDB backend  
PROXY_FILE_PATH Path of file that store proxies. default is None, means get proxies from Spider Settings None
HTTP_PROXIES keywords of HTTP proxies for LocalFile backend or Spider Settings  
HTTPS_PROXIES keywords of HTTPS proxies for LocalFile backend or Spider Settings  
PROXY_SLEEP_INTERVAL Time to sleep for blocked proxy become available 60*60*24
PROXY_SPIDER_CLOSE_WHEN_NO_PROXY Whether to close spider when run out of all proxies True
PROXY_RELOAD_ENABLED enable to reload proxy from storage when all proxies was used and prepare to cycle use False

Project details


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