Standard WG Meeting - August 25th, 2022

[kriswest]

Date

Thursday 25 Aug 2022 - 10am EST / 3pm BST

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  Meeting number: 665 568 411

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Agenda

• Convene & roll call, review meeting notices (5mins)
• Review action items from previous meeting (5mins)
  • Standard WG Meeting - July 28th, 2022 #784
• Maintainers update (5mins)
  • FDC3 2.0 was released as the current version (22nd August)
  • (Beta) release of NPM module
  • Pending release tasks: https://github.com/finos/FDC3/milestone/8
  • Post-release tasks: https://github.com/finos/FDC3/milestone/7
  • Volunteers always welcome!
  • Are any Q&A sessions needed for 2.0 implementation or general FDC3 questions?
• Discussion of open issues (40 mins)
  (will not get to all, the remainder to roll over to future meetings):
  • Add /intents and /contexts endpoints to the AppD API #719
    • Introduce a new fdc3.applications() method #311 (included as loosely related)
  • The AppIntent interface incorrectly describes an intent #312
  • Allow an AppD application record to reference other apps that are *required* for it to run #674
  • Allow Desktop Agent To Join Multiple Channels #242
  • Reset context  #301
  • Provide better documentation and examples for AppD auth support #559
  • Revive and update or replace AppD reference implementation #563
  • Upgrade exposure of originating app identity to a requirement (MUST) from recommended (SHOULD) #735
  • Add save and restore state API calls - so FDC3 apps can fully participate in save and restore layout #386
  • Provide Notification API's #387
  • Add vendor agnostic default window size and position settings to the App Directory app definition format #564
• AOB & Adjourn (5mins)
  • Please raise issues for any topic that you'd like discussed at future meetings.

Minutes

• Maintainers update

  • Are any Q&A sessions needed for 2.0 implementation or general FDC3 questions?
    • Implementation questions can be:
      • posted as a github discussion: FDC3 2.0 questions #803
      • discussed on the #fdc3 channel on the FINOS slack

• Discussion of open issues:

  • Add /intents and /contexts endpoints to the AppD API #719
    • A number of participants (including @nkolba and @kriswest) felt that the proposed /intents and /contexts appD endpoints are useful for both development and governance use (at least one firm has demonstrated a web UX based on similar endpoints).
    • However, adding API endpoints that pass through this information was not considered necessary or wise as it makes it easier for an application to gather and leak information about the desktop environment (@nkolba @kriswest @openfin-johans).
      • Similar, but more limited, functionality is already available in the form of the findIntentsByContext and raiseIntentForContext API calls, which will return intent and resolution to app options for a specific context (adding a list of all know contexts makes mining information with these calls trivial, however, the calls as they stand serve a valid usecase.
      • The same thought applies to an API call to retrieve the details of the appD URLs in use. Apps running in the context of a Desktop Agent generally do not need this information (although vendors would value the information, firms using the agents are unlikely to want that information to leak).
    • (Silent) consent was sought and received to move forward with proposing new appD API endpoints for `/intents' and '/contexts' and to NOT make any additions the Desktop Agent API.
  • Introduce a new fdc3.applications() method #311
    • This issue was revised as related to the above - the same thoughts apply:
      • Adding an fdc3.applications() function makes it trivially easy for information about the desktop environment to be leaked to any and all applications running in its context.
      • It is possible to gather similar information when interoperating with applications or using findIntent calls, doing so requires knowledge of all the intents and context types in use. While it is easy to enumerate standard types, It isn't possible to do so for proprietary types - it also requires a more concerted effort to gather the information.
    • (Silent) consent was sought and received to close this issue for the time being.
  • The AppIntent interface incorrectly describes an intent #312
    • The AppIntent interface only allows for a single display name to be returned. However, the main source for the display name is the interop/intents configuration of apps that can resolve the intent - hence, multiple different display names maybe returned, forcing the desktop agent to pick one.
    • This was less of a problem in FDC3's early days when a Desktop Agent would typically be working with a single appD in the control of the desktop developer, allowing them to ensure consistency in the names.
    • However, in situations where the Desktop Agent develop, (multiple) app developers and the desktop owner all differ it becomes far more challenging.
    • Proposed solutions:
      • Alter the AppIntent type to allow a display name per app returned
        • Challenging for a resolver UI or applications using findIntent as they are likely to need a single display name
        • Also a breaking change...
      • Advise that display names are drawn from the 'standard intents.json' file in the standard
        • The display names in that file have not been well curated and vary in form
        • Does not provide a solution for proprietary intents.
      • Deprecate the displayName field and rely on the intents name instead.
        • Intents are already required to be 'recognizable' and their meaning to be 'generally self-evident'
        • Non-breaking (until field is removed in a later version)
    • However, there is a use-case for some descriptive information about a specific apps handling of an intent: describe the precise behavior of the application.
      • This could be handled through by allowing an app to configure a description field in its interop.intents.listensFor metadata (breaking change) and a type that extends AppMetadata in the Desktop Agent API to add the description field (non-breaking).
      • A breaking change after the 2.0 release is undesirable.
    • PR for the change (deprecate display name, explain in documentation that intent name should be used for display) to be worked up and brought back for further review
  • Allow an AppD application record to reference other apps that are *required* for it to run #674
    • Discussed use cases for both 'required' apps and 'related' apps in appD config
      • E.g. a micro-frontend related to a larger application, such as a 'CreateOrder' form and an OMS, might express a required relationship for the form to the OMS and a related (optional) relationship for the OMS to the form.
      • Some participants felt that this could also be handled through a 'grouping' field, although it was observed that this loses some of the nuances of teh relationship
      • Some participants expressed concerns that we might be wandering into NPM style dependency relationships.
        • @kriswest argued that such relationships would be far more limited and this metadata is only intended to allow a UI to implement a 'guard rail', rather than any form of hard contract.
        • It was also suggested that this could be achieved via existing interop data (show a warning that no other app is listening for or can raise an intent specified in the apps interop config
          • @kriswest it is not required that there exist an app to raise or resolve an intent that another app supports, so I believe this is outside the use-case for that configuration.
    • The end of the meeting curtailed discussion, however, it was agreed to table this issue for the time being but to leave it open to revisit later.

Action Items

• @kriswest or volunteer: raise PR to resolve Add /intents and /contexts endpoints to the AppD API #719
  • Add optional/recommended API endpoints for /intents and /contexts to the appD API.
• @kriswest close Introduce a new fdc3.applications() method #311
• @kriswest or volunteer: raise PR to resolve The AppIntent interface incorrectly describes an intent #312
  • deprecate interop.intents.listensFor[<intentname>].displayName field in appD and AppIntent.intent.displayName in the API types and add explanation of using intent name for display to documentation.
• @kriswest prep next meeting agenda to include next issues on list + Error cases need better documentation, they are rejected Promises #807 (added after meeting)

Rolled over from the previous meeting:

• @hampshan Review appD 2.0 record properties and raise an issue to add a link to an app's help documentation (if the moreInfo link is not sufficient). This might be used, for example, to add a help link to window chrome in a desktop agent.

Untracked attendees

Full name	Affiliation	GitHub username

[kriswest]

Kris West / Cosaic 🚀

[tpina]

Tiago Pina / Cosaic

[mistryvinay]

Vinay Mistry / Symphony

[robmoffat]

Rob Moffat / FINOS

[Yannick-Malins]

Yannick Malins / Symphony 🥇

[openfin-johans]

Johan Sandersson / OpenFin 🎁

[timjenkel]

Tim Jenkel / Wellington

[hughtroeger]

Hugh Troeger / FactSet

[ksgeorgieva]

Kalina Georgieva / Tick42

[mattjamieson]

👋

[Qiana-Citi]

Qiana / Citi

[kriswest]

Minutes from the SWG meeting have now been posted