zimit/README.md
Ilya Kreymer e4128c8183 add help text/validation for all config options, url now must be passed in with --url
add --scroll boolean option, which activates simple autoscroll behavior
use chrome user-agent for manual fetch
reenable pywb option
cleanup Dockerfile: update to warc2zim 1.0.1, install fonts-stix for math science sites
update README
2020-09-29 05:22:33 +00:00

2.3 KiB

zimit

This version of Zimit runs a single-site headless-Chrome based crawl in a Docker container and produces a ZIM of the crawled content.

The system uses:

  • oldwebtoday/chrome - to install a recent version of Chrome 84
  • puppeteer-cluster - for running Chrome browsers in parallel
  • pywb - in recording mode for capturing the content
  • warc2zim - to convert the crawled WARC files into a ZIM

The driver in index.js crawls a given URL using puppeteer-cluster.

After the crawl is done, warc2zim is used to write a zim to the /output directory, which can be mounted as a volume.

Usage

zimit is intended to be run in Docker.

To build locally run:

docker build -t openzim/zimit .

The image accepts the following parameters:

  • --url URL - the url to be crawled (required)
  • --workers N - number of crawl workers to be run in parallel
  • --wait-until - Puppeteer setting for how long to wait for page load. See page.goto waitUntil options. The default is load, but for static sites, --wait-until domcontentloaded may be used to speed up the crawl (to avoid waiting for ads to load for example).
  • --name - Name of ZIM file (defaults to the hostname of the URL)
  • --output - output directory (defaults to /output)
  • --limit U - Limit capture to at most U URLs
  • --exclude <regex> - skip URLs that match the regex from crawling. Can be specified multiple times.
  • --scroll - if set, will activate a simple auto-scroll behavior on each page.

The following is an example usage. The --cap-add and --shm-size flags are needed to run Chrome in Docker.

Example command:

docker run  -v /output:/output --cap-add=SYS_ADMIN --cap-add=NET_ADMIN --shm-size=1gb openzim/zimit --url URL --name myzimfile --workers 2 --wait-until domcontentloaded

The puppeteer-cluster provides monitoring output which is enabled by default and prints the crawl status to the Docker log.


Previous version

A first version of a generic HTTP scraper was created in 2016 during the Wikimania Esino Lario Hackathon.

That version is now considered outdated and archived in 2016 branch.