302 redirect

Overview

Using frictionless (4.21.2) CLI to validate a CSV file available from a 302 redirect URL leads to strange behaviour.

The incriminated URL is https://demo.data.gouv.fr/fr/datasets/r/d4d78089-f218-40b6-a86a-d7cc4e624b0c. It redirects to https://static.data.gouv.fr/resources/donnees-essentielles-de-conventions-de-subvention-a-antibes/20200325-153014/antibes-subventions-2017.csv using Location http header.

Validating the primary URL using frictionless:

> frictionless validate --schema https://git.opendatafrance.net/scdl/subventions/-/raw/v2.0.1/schema.json https://demo.data.gouv.fr/fr/datasets/r/d4d78089-f218-40b6-a86a-d7cc4e624b0c

# -----
# valid: https://demo.data.gouv.fr/fr/datasets/r/d4d78089-f218-40b6-a86a-d7cc4e624b0c
# -----

Validating the target url:

frictionless validate --schema https://git.opendatafrance.net/scdl/subventions/-/raw/v2.0.1/schema.json https://static.data.gouv.fr/resources/donnees-essentielles-de-conventions-de-subvention-a-antibes/20200325-153014/antibes-subventions-2017.csv

# -------
# invalid: https://static.data.gouv.fr/resources/donnees-essentielles-de-conventions-de-subvention-a-antibes/20200325-153014/antibes-subventions-2017.csv
# -------
==========  ======================================
code        message
==========  ======================================
task-error  The task has an error: 'fieldPosition'
==========  ======================================

So I got some questions/remarks:

• it seems that frictionless doesn’t support 302 redirect. Am I wrong? If not, do you plan to implement it or is there a workaround to deal with this type of URL?
• first frictionless command reports a valid result. It’s strange as the URL body is HTML and not tabular data (?)
• second frictionless command reports an invalid result. How should the message be understood?

Thanks in advance for your help.

---

Please preserve this line to notify @roll (lead of this repository)

[roll]

Thanks, @pierredittgen!

I’ll investigate

[johanricher]

Thanks @roll! We’ll test on our side and let you know if we still have related issues.