urbit/pkg/arvo/app/group-store.hoon

145 lines
3.1 KiB
Plaintext

:: group-store: data store for groups of ships
::
/- *group-store
|%
+$ move [bone [%diff diff]]
::
+$ state
$% [%0 state-zero]
==
::
+$ state-zero
$: =groups
==
::
+$ diff
$% [%group-update group-update]
[%group-initial groups]
==
--
::
|_ [bol=bowl:gall state]
::
++ this .
::
++ prep
|= old=(unit state)
^- (quip move _this)
[~ ?~(old this this(+<+ u.old))]
::
++ peek-x
|= pax=path
^- (unit (unit [%noun (unit group)]))
?~ pax
[~ ~ %noun ~]
=/ grp=(unit group) (~(get by groups) pax)
[~ ~ %noun grp]
::
++ peer-all
|= pax=path
^- (quip move _this)
?> (team:title our.bol src.bol)
:: we now proxy all events to this path
:_ this
[ost.bol %diff %group-initial groups]~
::
++ peer-keys
|= pax=path
^- (quip move _this)
?> (team:title our.bol src.bol)
:: we send the list of keys then send events when they change
:_ this
[ost.bol %diff %group-update [%keys ~(key by groups)]]~
::
++ peer-group
|= pax=path
^- (quip move _this)
?> (team:title our.bol src.bol)
=/ grp (~(got by groups) pax)
:_ this
[ost.bol %diff %group-update [%path grp pax]]~
::
++ poke-group-action
|= action=group-action
^- (quip move _this)
?> (team:title our.bol src.bol)
?- -.action
%add (handle-add action)
%remove (handle-remove action)
%bundle (handle-bundle action)
%unbundle (handle-unbundle action)
==
::
++ handle-add
|= act=group-action
^- (quip move _this)
?> ?=(%add -.act)
?~ pax.act
[~ this]
?. (~(has by groups) pax.act)
[~ this]
=/ members (~(got by groups) pax.act)
=. members (~(uni in members) members.act)
?: =(members (~(got by groups) pax.act))
[~ this]
:- (send-diff pax.act act)
this(groups (~(put by groups) pax.act members))
::
++ handle-remove
|= act=group-action
^- (quip move _this)
?> ?=(%remove -.act)
?~ pax.act
[~ this]
?. (~(has by groups) pax.act)
[~ this]
=/ members (~(got by groups) pax.act)
=. members (~(dif in members) members.act)
?: =(members (~(got by groups) pax.act))
[~ this]
:- (send-diff pax.act act)
this(groups (~(put by groups) pax.act members))
::
++ handle-bundle
|= act=group-action
^- (quip move _this)
?> ?=(%bundle -.act)
?~ pax.act
[~ this]
?: (~(has by groups) pax.act)
[~ this]
:- (send-diff pax.act act)
this(groups (~(put by groups) pax.act *group))
::
++ handle-unbundle
|= act=group-action
^- (quip move _this)
?> ?=(%unbundle -.act)
?~ pax.act
[~ this]
?. (~(has by groups) pax.act)
[~ this]
:- (send-diff pax.act act)
this(groups (~(del by groups) pax.act))
::
++ update-subscribers
|= [pax=path act=group-action]
^- (list move)
%+ turn (prey:pubsub:userlib pax bol)
|= [=bone *]
[bone %diff %group-update act]
::
++ send-diff
|= [pax=path act=group-action]
^- (list move)
%- zing
:~ (update-subscribers /all act)
(update-subscribers [%group pax] act)
?. |(=(%bundle -.act) =(%unbundle -.act))
~
(update-subscribers /keys act)
==
::
--