urbit/pkg/base-dev/sur/sole.hoon
fang 3120681b2b
sole: properly support multiple sessions
We update the sole protocol to more cleanly support multiple sessions.

Primarily, the "sole id" is updated to be a [@p @ta] instead of a @ta,
and it is now generated based off the connected dill session, rather
than statically.

This change ripples out to applications that support the sole protocol:
the subscription path becomes /sole/[ship]/[session] (as opposed to
/sole/[per-ship-constant]), and %sole-action pokes include the new id as
well.
For shoe agents, this means (at the very least) updating the function
signatures of the shoe arms.

/lib/sole has been updated to include helper functions for parsing a
sole-id from a subscription path, and turning a sole-id into its
corresponding path. It also has a function to aid in migrating old
sole-ids.

Existing sole agents are made to kick any known open sessions, forcing a
resubscribe by drum, so that they may use exclusively the new format
going forward. Third-party agents are recommended to do the same.

Note that some functionality, such as |link, still operates exclusively
on the default session. Improvements in this area to follow soon.
2022-02-20 17:19:03 -06:00

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::
:::: /hoon/sole/sur
::
^?
|%
+$ sole-id [who=@p ses=@ta]
+$ sole-action :: sole to app
$: id=sole-id :: session id
$= dat
$% :: [%abo ~] :: reset interaction
[%det sole-change] :: command line edit
[%ret ~] :: submit and clear
[%clr ~] :: exit context
[%tab pos=@ud] :: tab complete
== ::
==
+$ sole-buffer (list @c) :: command state
+$ sole-change :: network change
$: ler=sole-clock :: destination clock
haw=@uvH :: source hash
ted=sole-edit :: state change
== ::
+$ sole-clock [own=@ud his=@ud] :: vector clock
+$ sole-edit :: shared state change
$% [%del p=@ud] :: delete one at
[%ins p=@ud q=@c] :: insert at
[%mor p=(list sole-edit)] :: combination
[%nop ~] :: no-op
[%set p=sole-buffer] :: discontinuity
== ::
+$ sole-effect :: app to sole
$% [%bel ~] :: beep
[%blk p=@ud q=@c] :: blink+match char at
[%bye ~] :: close session
[%clr ~] :: clear screen
[%det sole-change] :: edit command
[%err p=@ud] :: error point
[%klr p=styx] :: styled text line
[%mor p=(list sole-effect)] :: multiple effects
[%nex ~] :: save clear command
[%pro sole-prompt] :: set prompt
[%sag p=path q=*] :: save to jamfile
[%sav p=path q=@] :: save to file
[%tab p=(list [=cord =tank])] :: tab-complete list
[%tan p=(list tank)] :: classic tank
:: [%taq p=tanq] :: modern tank
[%txt p=tape] :: text line
[%url p=@t] :: activate url
== ::
+$ sole-command :: command state
$: pos=@ud :: cursor position
say=sole-share :: cursor
== ::
+$ sole-prompt :: prompt definition
$: vis=? :: command visible
tag=term :: history mode
cad=styx :: caption
== ::
+$ sole-share :: symmetric state
$: ven=sole-clock :: our vector clock
leg=(list sole-edit) :: unmerged edits
buf=sole-buffer :: sole state
== ::
:: ::
:: ::
++ sole-dialog :: standard dialog
|* out=$-(* *) :: output structure
$-(sole-input (sole-result out)) :: output function
:: ::
+$ sole-input tape :: prompt input
++ sole-result :: conditional result
|* out=$-(* *) :: output structure
$@(@ud (sole-product out)) :: error position
:: ::
++ sole-product :: success result
|* out=$-(* *) ::
%+ pair (list tank) ::
%+ each (unit out) :: ~ is abort
(pair sole-prompt (sole-dialog out)) :: ask and continue
:: ::
+$ sole-gen :: XX virtual type
$% [%say $-((sole-args) (cask))] :: direct noun
[%ask $-((sole-args) (sole-product (cask)))] :: dialog
== ::
++ sole-args :: generator arguments
|* _[* *] ::
,[[now=@da eny=@uvJ bek=beak] [,+<- ,+<+]] ::
--