Catch unhandled errors when loading a resource from a URL

[cynepton]

Fixes: https://gitlab.com/datopian/core/support/-/issues/306

Files updated

• ckanext/opendatani/ontroller.py

  • Added a try block to wrap the existing code in the resource_read method within the CustomPackageController class.

        try:
            r = requests.head(c.resource['url'])
            if r.status_code not in (400, 403, 405) and r.ok:
                size = r.headers.get('content-length')
                if size and int(size) > MAX_FILE_SIZE:
                    h.flash_error('Sorry, this file is too large to be able to display in the browser, please download the data resource to examine it further.')
        except Exception as e:
            print(e)
            h.flash_error('Unable to get resource')