Skip to content

Upgrades to read multi-valued headers from WAT data#5

Merged
sebastian-nagel merged 5 commits into
masterfrom
wat-multivalue-headers
Dec 17, 2024
Merged

Upgrades to read multi-valued headers from WAT data#5
sebastian-nagel merged 5 commits into
masterfrom
wat-multivalue-headers

Conversation

@sebastian-nagel

Copy link
Copy Markdown

Header data from WARC and HTTP headers will become multi-valued in WAT files. That is, the value is either a string or a list of strings. Jobs reading WAT files need to be adapted to the new data format.

See commoncrawl/ia-web-commons#18 and commoncrawl/ia-web-commons#38 for further details about multi-valued headers in WAT files.

In addition, this PR updates dependencies, modernizes the examples and makes the input and output paths command-line parameters.

The version number is incremented to 0.5-SNAPSHOT.

- Hadoop client: 3.3.4 -> 3.3.6
- webarchive-commons: 1.1.9 -> 1.2.0

Bump version number
- usage with recent Hadoop versions in local/non-distributed mode
- pass input files (or directories) and output directory via command
  line
- add minimal command-line help
- enforce ISO-8859-1 as character set to read HTML code
  (HTML elements will we readable but text might not)
- search for "Content-Type: text/html" also in lower case or any variant
- header data from WARC and HTTP headers will become multi-valued
  in WAT files. That is, the value is either a string or a list of
  strings (JSONArray).
- allow for lowercase/uppercase variants of the HTTP "Server" header
- ensure that the "nofollow" attributes in "X-Robots-Tag" HTTP headers
  are properly read independent from wether the header
  - is repeated (multi-valued)
  - written in any lower/uppercase variants
- improve logging in case of errors
@sebastian-nagel sebastian-nagel merged commit 5aea741 into master Dec 17, 2024
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

None yet

Projects

None yet

Development

Successfully merging this pull request may close these issues.

1 participant