Create 'New Item in Feed' Service

[davidwabnitz]

Service description

• name: New Item in Feed
• description: triggers on new RSS and Atom feed items/entries
• type: trigger
• provider name: Feed Service Provider
• step config options:
  • Feed URL (required).
  • Note that feed format should not need to be set explicitly. If both RSS and Atom are offered in one feed, pick RSS per default for downstream processing.
  • Refresh interval (optional). Input given in minutes. Defaults to 15.
  • Note that in future the triggering event will need to be configurable and that password protected feeds will need to be supported.
• output (see e.g. Zapier RSS 'New Item in Feed')
  • output every XML child-element of item as parsed content
  • output every XML child-element of item as raw content (prefix element name with raw_)
  • output every attribute of every XML child-element of item as raw content (prefix property name with raw_elementname)

Further requirements

• ‚new‘ is defined per default as having different GUID/ID/URL. Note that in future triggering events will need to be configurable (e.g. also supporting triggering on different content, triggering by any change in any property, triggering by detected custom value)
• needs to support RSS 1.0, RSS 2.0 and Atom 1.0. Should detect format implicitly.
• keep in mind that in future ‚New Items in Multiple Feeds‘ will need to be supported either as separate service of type trigger, or as config parameter to this service.
• testing the step configuration
  • preconditions
  • at least one recent item in feed
  • at least one item matches selected trigger options (default: different GUID/ID/URL)
  • test success criteria
  • at least one item can be fetched from the feed and parsed successfully
  • sample to display: display raw internal representation (i.e. with all field names that can be used downstream) of parsed feed item

[johipsum]

The current state of the service lambda is broken. The feedparser module we use currently breaks the building process for any reason.

[alexthewilde]

90

[johipsum]

I fixed the build process by using the babel-minify plugin for webpack to minify the output https://github.com/kreuzwerker/DKT.flows-engine/commit/07a41b04804bbfad1c5f99a1162e784e07c05e47