brozzler 1.1b4

Distributed web crawling with browsers

“browser” | “crawler” = “brozzler”

Brozzler is a distributed web crawler (爬虫) that uses a real browser (chrome or chromium) to fetch pages and embedded urls and to extract links. It also uses youtube-dl to enhance media capture capabilities.

It is forked from https://github.com/internetarchive/umbra.

Brozzler is designed to work in conjunction with warcprox for web archiving.

Installation

Brozzler requires python 3.4 or later.

# set up virtualenv if desired
pip install brozzler

Brozzler also requires a rethinkdb deployment.

Usage

Launch one or more workers:

brozzler-worker -e chromium

Submit jobs:

brozzler-new-job myjob.yaml

Job Configuration

Jobs are defined using yaml files. Options may be specified either at the top-level or on individual seeds. A job id and at least one seed url must be specified, everything else is optional.

id: myjob
time_limit: 60 # seconds
proxy: 127.0.0.1:8000 # point at warcprox for archiving
ignore_robots: false
enable_warcprox_features: false
warcprox_meta: null
metadata: {}
seeds:
  - url: http://one.example.org/
  - url: http://two.example.org/
    time_limit: 30
  - url: http://three.example.org/
    time_limit: 10
    ignore_robots: true
    scope:
      surt: http://(org,example,

Submit a Site to Crawl Without Configuring a Job

brozzler-new-site --proxy=localhost:8000 --enable-warcprox-features \
    --time-limit=600 http://example.com/

Brozzler Web Console

Brozzler comes with a rudimentary web application for viewing crawl job status. To install the brozzler with dependencies required to run this app, run

pip install brozzler[webconsole]

To start the app, run

brozzler-webconsole

XXX configuration stuff

Fonts (for decent screenshots)

On ubuntu 14.04 trusty I installed these packages:

xfonts-base ttf-mscorefonts-installer fonts-arphic-bkai00mp fonts-arphic-bsmi00lp fonts-arphic-gbsn00lp fonts-arphic-gkai00mp fonts-arphic-ukai fonts-farsiweb fonts-nafees fonts-sil-abyssinica fonts-sil-ezra fonts-sil-padauk fonts-unfonts-extra fonts-unfonts-core ttf-indic-fonts fonts-thai-tlwg fonts-lklug-sinhala

License

Copyright 2015-2016 Internet Archive

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this software except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License 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.