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Eduard van Valkenburg e5a6e35843 Python: feat(python): cross-channel hosting improvements (endpoint paths, Activity push, Telegram/Teams fixes) (#6307)
* Update hosting channel endpoint paths

Treat channel paths as concrete endpoint paths so built-in channels can be mounted at their defaults or at the app root without sample-specific subclasses. Update docs, tests, and the Foundry Telegram Invocations sample accordingly.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Add push support to ActivityProtocolChannel

Implement the ChannelPush protocol so the Activity Protocol channel can
receive cross-channel fan-out (ResponseTarget.all_linked) and echo_input
replay as a non-originating destination:

- Add push() that reconstructs a proactive Bot Framework activity (bot/user
  swap) from the stored conversation reference and POSTs it to
  /v3/conversations/{id}/activities.
- Record a ChannelIdentity (service_url, conversation, bot, user, channel_id,
  locale) on ChannelRequest.identity so the host registers the channel under
  its isolation key for fan-out resolution.
- Route the streaming path through deliver_response so Activity-originated
  turns broadcast like Telegram/Discord.
- Add tests for push delivery, service_url validation, ChannelPush instance
  check, and inbound identity recording.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Don't delete Telegram webhook on shutdown by default

The TelegramChannel deleted its webhook on shutdown in webhook mode. During
a rolling redeploy the new revision registers the webhook on startup, then
the old revision's shutdown deletes it, silently breaking inbound delivery
until the next boot. setWebhook is overwriting/idempotent, so startup
re-asserts the webhook every boot and no teardown is needed.

Add a delete_webhook_on_shutdown flag (default False) so teardown is opt-in
for ephemeral deployments, and leave the webhook in place otherwise.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Fix Activity channel streaming on non-Teams channels (405 on updateActivity)

The Activity Protocol channel streamed replies the Teams way: POST a
placeholder, then PUT-edit it as tokens arrive. Only Teams supports the
updateActivity REST op; Web Chat, Direct Line and the Emulator return
405 Method Not Allowed on the PUT, so the user saw only the placeholder.

Gate the placeholder+edit flow on edit-capable channels (msteams). Other
channels now buffer the stream and POST a single final message, mirroring
the non-streaming path's fan-out and response-hook semantics. Also add a
defensive 405 fallback inside the Teams edit loop so an unexpected 405
can never strand the user on the placeholder.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* fix(hosting-activity-protocol): don't parse Teams inline attachment content as a URI

Teams message activities include a text/html attachment whose inline
`content` is raw HTML (not a URL). _parse_activity fell back to
`attachment["content"]` and passed it to Content.from_uri, raising
ContentError ("URI must contain a scheme") and failing the whole turn,
so Teams users got no response.

Only treat `contentUrl` as a URI, require an absolute scheme, and skip
unparseable attachments defensively instead of failing the message.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* feat(hosting-activity-protocol): native slash-command dispatch for Teams/Activity

Add a commands= parameter to ActivityProtocolChannel that intercepts a
leading /command (after stripping the bot's own @mention) and dispatches
to ChannelCommand handlers, mirroring the Telegram channel. Unknown
commands fall through to the agent. The channel run_hook is applied to
command requests so handlers observe the same resolved isolation key as
ordinary messages, and handler errors are swallowed (200, no Bot Service
retry of non-idempotent commands).

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* feat(hosting): silent attributed Telegram echoes + Teams markdown rendering

- hosting-telegram: send cross-channel input echoes with disable_notification
  (silent) and detect echo payloads so they aren't re-broadcast.
- hosting-activity-protocol: render outbound + push activities as textFormat
  'markdown' so Teams shows formatted replies (enables per-channel variants).

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* fix(hosting-activity-protocol): address PR #6307 review feedback

Consult the host delivery pipeline even for empty streamed replies so
ResponseTarget.none is honoured and non-originating fan-out is consulted
instead of always emitting an originating "(no response)" message. Applies
to both the progressive-edit (Teams) and buffered (Web Chat/Direct Line)
streaming paths.

Re-validate service_url against the allow-list in push(): the identity is
read from a persisted store and push runs out-of-band, so the captured
service_url must be re-checked before a bearer token is sent.

Adds tests for empty-stream host consultation/suppression on both streaming
paths and for push rejecting a disallowed service_url.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
e5a6e35843 ยท 2026-06-03 16:37:03 +02:00
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Architectural Decision Records (ADRs)

An Architectural Decision (AD) is a justified software design choice that addresses a functional or non-functional requirement that is architecturally significant. An Architectural Decision Record (ADR) captures a single AD and its rationale.

For more information see

How are we using ADRs to track technical decisions?

  1. Copy docs/decisions/adr-template.md to docs/decisions/NNNN-title-with-dashes.md, where NNNN indicates the next number in sequence.
    1. Check for existing PR's to make sure you use the correct sequence number.
    2. There is also a short form template docs/decisions/adr-short-template.md
  2. Edit NNNN-title-with-dashes.md.
    1. Status must initially be proposed
    2. List of deciders must include the github ids of the people who will sign off on the decision.
    3. The relevant EM and architect must be listed as deciders or informed of all decisions.
    4. You should list the names or github ids of all partners who were consulted as part of the decision.
    5. Keep the list of deciders short. You can also list people who were consulted or informed about the decision.
  3. For each option list the good, neutral and bad aspects of each considered alternative.
    1. Detailed investigations can be included in the More Information section inline or as links to external documents.
  4. Share your PR with the deciders and other interested parties.
    1. Deciders must be listed as required reviewers.
    2. The status must be updated to accepted once a decision is agreed and the date must also be updated.
    3. Approval of the decision is captured using PR approval.
  5. Decisions can be changed later and superseded by a new ADR. In this case it is useful to record any negative outcomes in the original ADR.