mirror of
https://github.com/ilyakooo0/urbit.git
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530 lines
13 KiB
Plaintext
530 lines
13 KiB
Plaintext
/- tapp-sur=tapp
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/+ async
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|* $: state-type=mold
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peek-data=mold
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in-poke-data=mold
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out-poke-data=mold
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in-peer-data=mold
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out-peer-data=mold
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==
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|%
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++ tapp-sur (^tapp-sur out-poke-data out-peer-data)
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++ card card:tapp-sur
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++ sign sign:tapp-sur
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++ contract contract:tapp-sur
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+$ tapp-admin-in-poke-data
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[%tapp-admin tapp-admin=?(%cancel %restart)]
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+$ tapp-in-poke-data
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$% tapp-admin-in-poke-data
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in-poke-data
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==
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+$ command
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$% [%init ~]
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[%poke =in-poke-data]
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[%peer =path]
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[%diff =dock =path =in-peer-data]
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[%take =sign]
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==
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::
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++ async-lib (^async sign card contract)
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++ async async:async-lib
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::
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+$ move (pair bone card)
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++ tapp-async (async state-type)
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+$ tapp-state
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$: waiting=(qeu command)
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active=(unit eval-form:eval:tapp-async)
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app-state=state-type
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==
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+$ tapp-peek
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[%noun ?(? (set contract))]
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::
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:: The form of a tapp
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::
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+$ tapp-core-all
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$_ ^|
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|_ [bowl:gall state-type]
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::
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:: Initialization
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::
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++ handle-init
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*form:tapp-async
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::
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:: Input
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::
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++ handle-poke
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|~ in-poke-data
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*form:tapp-async
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::
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:: Read
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::
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++ handle-peek
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|~ path
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*(unit (unit peek-data))
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::
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:: Subscription request
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::
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++ handle-peer
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|~ path
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*form:tapp-async
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::
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:: Receive subscription result
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::
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++ handle-diff
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|~ [dock path in-peer-data]
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*form:tapp-async
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::
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:: Receive syscall result
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::
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++ handle-take
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|~ sign
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*form:tapp-async
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--
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::
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:: Default handlers for all comands
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::
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++ default-tapp
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=/ m tapp-async
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^- tapp-core-all
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|_ [=bowl:gall state=state-type]
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++ handle-init
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(pure:m state)
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::
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++ handle-poke
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|=(* (async-fail:async-lib %no-poke-handler ~))
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::
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++ handle-peek _~
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::
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++ handle-peer
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|= =path
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^- form:m
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?: ?=([%sole *] path)
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~| %default-tapp-no-sole !!
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(async-fail:async-lib %no-peer-handler >path< ~)
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::
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++ handle-diff
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|=(* (async-fail:async-lib %no-diff-handler ~))
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::
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++ handle-take
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=> |%
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++ print-if-error
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|= [msg=tape error=(unit tang)]
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%. (pure:m state)
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?~ error
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same
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(slog [leaf+msg u.error])
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--
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|= =sign
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^- form:m
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?: ?=(%coup -.sign)
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(print-if-error "poke failed" error.sign)
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?: ?=(%reap -.sign)
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(print-if-error "peer {<path.sign>} failed" error.sign)
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(async-fail:async-lib %no-take-handler ~)
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--
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::
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:: The form of a tapp that only handles pokes
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::
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++ tapp-core-poke
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$_ ^|
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|_ [bowl:gall state-type]
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++ handle-poke handle-poke:*tapp-core-all
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--
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::
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++ create-tapp-poke
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|= handler=tapp-core-poke
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%- create-tapp-poke-peer
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|_ [=bowl:gall state=state-type]
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++ handle-peer ~(handle-peer default-tapp bowl state)
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::
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++ handle-poke ~(handle-poke handler bowl state)
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--
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::
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:: The form of a tapp that only handles pokes and peers
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::
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++ tapp-core-poke-peer
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$_ ^|
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|_ [bowl:gall state-type]
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++ handle-poke handle-poke:*tapp-core-all
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++ handle-peer handle-peer:*tapp-core-all
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--
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::
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++ create-tapp-poke-peer
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|= handler=tapp-core-poke-peer
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%- create-tapp-all
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|_ [=bowl:gall state=state-type]
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++ handle-init ~(handle-init default-tapp bowl state)
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++ handle-peek ~(handle-peek default-tapp bowl state)
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++ handle-diff ~(handle-diff default-tapp bowl state)
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++ handle-take ~(handle-take default-tapp bowl state)
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::
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++ handle-poke ~(handle-poke handler bowl state)
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++ handle-peer ~(handle-peer handler bowl state)
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--
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::
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:: The form of a tapp that only handles pokes and diffs
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::
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++ tapp-core-poke-diff
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$_ ^|
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|_ [bowl:gall state-type]
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++ handle-poke handle-poke:*tapp-core-all
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++ handle-diff handle-diff:*tapp-core-all
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--
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::
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++ create-tapp-poke-diff
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|= handler=tapp-core-poke-diff
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%- create-tapp-all
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|_ [=bowl:gall state=state-type]
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++ handle-init ~(handle-init default-tapp bowl state)
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++ handle-peek ~(handle-peek default-tapp bowl state)
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++ handle-peer ~(handle-peer default-tapp bowl state)
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++ handle-take ~(handle-take default-tapp bowl state)
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::
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++ handle-poke ~(handle-poke handler bowl state)
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++ handle-diff ~(handle-diff handler bowl state)
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--
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::
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:: The form of a tapp that only handles pokes, peers, and takes
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::
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++ tapp-core-poke-peer-take
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$_ ^|
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|_ [bowl:gall state-type]
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++ handle-poke handle-poke:*tapp-core-all
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++ handle-peer handle-peer:*tapp-core-all
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++ handle-take handle-take:*tapp-core-all
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--
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::
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++ create-tapp-poke-peer-take
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|= handler=tapp-core-poke-peer-take
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%- create-tapp-all
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|_ [=bowl:gall state=state-type]
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++ handle-init ~(handle-init default-tapp bowl state)
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++ handle-peek ~(handle-peek default-tapp bowl state)
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++ handle-diff ~(handle-diff default-tapp bowl state)
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::
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++ handle-poke ~(handle-poke handler bowl state)
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++ handle-peer ~(handle-peer handler bowl state)
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++ handle-take ~(handle-take handler bowl state)
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--
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::
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:: The form of a tapp that only handles pokes, peers, diffs, and takes
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::
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++ tapp-core-poke-peer-diff-take
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$_ ^|
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|_ [bowl:gall state-type]
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++ handle-poke handle-poke:*tapp-core-all
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++ handle-peer handle-peer:*tapp-core-all
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++ handle-diff handle-diff:*tapp-core-all
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++ handle-take handle-take:*tapp-core-all
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--
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::
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++ create-tapp-poke-peer-diff-take
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|= handler=tapp-core-poke-peer-diff-take
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%- create-tapp-all
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|_ [=bowl:gall state=state-type]
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++ handle-init ~(handle-init default-tapp bowl state)
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++ handle-peek ~(handle-peek default-tapp bowl state)
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::
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++ handle-poke ~(handle-poke handler bowl state)
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++ handle-peer ~(handle-peer handler bowl state)
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++ handle-diff ~(handle-diff handler bowl state)
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++ handle-take ~(handle-take handler bowl state)
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--
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::
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++ create-tapp-all
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|= handler=tapp-core-all
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|_ [=bowl:gall tapp-state]
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++ this-tapp .
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::
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:: Initialize or upgrade tapp
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::
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:: If state is upgraded incompatibly, hard-reset and cancel if active.
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:: Otherwise, upgrade, cancel and restart if active.
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::
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++ prep
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|= old-state=(unit)
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^- (quip move _this-tapp)
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?~ old-state
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~& [%tapp-init dap.bowl]
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=. waiting (~(put to waiting) %init ~)
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start-async
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::
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=/ old ((soft tapp-state) u.old-state)
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?~ old
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~& [%tapp-reset dap.bowl]
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:: XX may break contracts!
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:: XX if active clam contracts only to abort transaction?
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::
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`this-tapp
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::
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:: because the clam replaces the active continuation with
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:: the bunt of its mold, we must fail the transaction
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::
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~& [%tapp-loaded dap.bowl]
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=. +<+.this-tapp u.old
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?^ active
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=. waiting (~(put to waiting) (need ~(top to waiting)))
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(oob-fail-async %reset-restart ~)
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`this-tapp
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::
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:: Start a command
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::
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++ poke
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|= =tapp-in-poke-data
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^- (quip move _this-tapp)
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?: ?=(tapp-admin-in-poke-data tapp-in-poke-data)
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?~ active
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~& [%tapp-admin-idle dap.bowl]
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`this-tapp
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?- tapp-admin.tapp-in-poke-data
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%cancel
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(oob-fail-async %tapp-admin-cancel ~)
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::
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%restart
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=. waiting (~(put to waiting) (need ~(top to waiting)))
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(oob-fail-async %tapp-admin-restart ~)
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==
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::
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=. waiting (~(put to waiting) %poke tapp-in-poke-data)
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?^ active
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~& [%waiting-until-current-async-finishes waiting]
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`this-tapp
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start-async
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::
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:: Receive acknowledgement of outgoing poke
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::
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:: XX these can be distinguished by dock, but, without a wire or
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:: some alternative, that's not very useful if you poke the same
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:: dock multiple times. %poke wires are not currently exposed ...
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:: Wat do?
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::
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++ coup
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|= [=wire error=(unit tang)]
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^- (quip move _this-tapp)
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?> ?=([@ @ *] wire)
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=/ her (slav %p i.wire)
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=* app i.t.wire
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=. waiting (~(put to waiting) %take %coup [her app] error)
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?^ active
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`this-tapp
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start-async
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::
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:: Read from tapp state
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::
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++ peek
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|= =path
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^- (unit (unit ?(tapp-peek peek-data)))
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?- path
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[%x %tapp %active ~]
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[~ ~ %noun ?=(^ active)]
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::
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[%x %tapp %contracts ~]
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[~ ~ %noun ?~(active ~ contracts.u.active)]
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::
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*
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(~(handle-peek handler bowl app-state) path)
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==
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::
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:: Receive subscription request
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::
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++ peer
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|= =path
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^- (quip move _this-tapp)
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=. waiting (~(put to waiting) %peer path)
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?^ active
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`this-tapp
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start-async
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::
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:: Receive (involuntary) unsubscription
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::
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++ quit
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|= =wire
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^- (quip move _this-tapp)
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?> ?=([@ @ *] wire)
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=/ her (slav %p i.wire)
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=* app i.t.wire
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=* pax t.t.wire
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=. waiting (~(put to waiting) %take %quit [her app] pax)
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?^ active
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`this-tapp
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start-async
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::
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:: Receive acknowledgement of outgoing subscription request
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::
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++ reap
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|= [=wire error=(unit tang)]
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^- (quip move _this-tapp)
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?> ?=([@ @ *] wire)
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=/ her (slav %p i.wire)
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=* app i.t.wire
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=* pax t.t.wire
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=. waiting (~(put to waiting) %take %reap [her app] pax error)
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?^ active
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`this-tapp
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start-async
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::
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:: Receive subscription response
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::
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++ diff
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|= [=wire =in-peer-data]
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^- (quip move _this-tapp)
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?> ?=([@ @ *] wire)
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=/ her (slav %p i.wire)
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=* app i.t.wire
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=* pax t.t.wire
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=. waiting (~(put to waiting) %diff [her app] pax in-peer-data)
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?^ active
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`this-tapp
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start-async
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::
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:: Pass response to async
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::
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++ sigh-httr
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|= [=wire =httr:eyre]
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^- (quip move _this-tapp)
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(take-async bowl `[wire %sigh httr])
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::
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:: Failed http request
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::
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++ sigh-tang
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|= [=wire =tang]
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^- (quip move _this-tapp)
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(oob-fail-async %failed-sigh tang)
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::
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:: Pass timer to async, or fail
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::
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++ wake-note
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|= [=wire error=(unit tang)]
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^- (quip move _this-tapp)
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?^ error
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(oob-fail-async %timer-fire-failed u.error)
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(take-async bowl `[wire %wake ~])
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::
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:: Enqueue timer transaction
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::
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++ wake-effect
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|= [=wire error=(unit tang)]
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^- (quip move _this-tapp)
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=. waiting (~(put to waiting) %take %wake error)
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?^ active
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`this-tapp
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start-async
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::
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:: Continue computing async
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::
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++ take-async
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|= =async-input:async-lib
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^- (quip move _this-tapp)
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=/ m tapp-async
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?~ active
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:: Can't cancel HTTP requests, so we might get answers after end
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:: of computation
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::
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?: ?=([~ @ %sigh *] in.async-input)
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`this-tapp
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~| %no-active-async
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~| ?~ in.async-input
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~
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wire.u.in.async-input
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!!
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=^ r=[moves=(list move) =eval-result:eval:m] u.active
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=/ out
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%- mule |.
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(take:eval:m u.active ost.bowl async-input)
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?- -.out
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%& p.out
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%| [[~ [%fail contracts.u.active %crash p.out]] u.active]
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==
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=> .(active `(unit eval-form:eval:tapp-async)`active) :: TMI
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=^ moves=(list move) this-tapp
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?- -.eval-result.r
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%next `this-tapp
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%fail (fail-async [contracts err]:eval-result.r)
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%done (done-async [contracts value]:eval-result.r)
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==
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[(weld moves.r moves) this-tapp]
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::
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:: Fails currently-running async
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::
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++ oob-fail-async
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(cury fail-async contracts:(need active))
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::
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:: Called on async failure
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::
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++ fail-async
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|= [contracts=(set contract) err=(pair term tang)]
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^- (quip move _this-tapp)
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%- %- slog
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:* leaf+(weld "tapp command failed in app/" (trip dap.bowl))
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leaf+(weld " %" (trip p.err))
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q.err
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==
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(finish-async contracts)
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::
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:: Called on async success
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::
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++ done-async
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|= [contracts=(set contract) state=state-type]
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^- (quip move _this-tapp)
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=. app-state state
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(finish-async contracts)
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::
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:: Called whether async failed or succeeded
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::
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++ finish-async
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|= contracts=(set contract)
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^- (quip move _this-tapp)
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=^ moves-1 this-tapp (cancel-contracts contracts)
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=. active ~
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=. waiting +:~(get to waiting)
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=^ moves-2 this-tapp start-async
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[(weld moves-1 moves-2) this-tapp]
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::
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:: Try to start next command
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::
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++ start-async
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^- (quip move _this-tapp)
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?. =(~ active)
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~| %async-already-active !!
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=/ next=(unit command) ~(top to waiting)
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?~ next
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`this-tapp
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=. active
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:- ~
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%- from-form:eval:tapp-async
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^- form:tapp-async
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=/ out
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%- mule |.
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?- -.u.next
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%init ~(handle-init handler bowl app-state)
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%poke (~(handle-poke handler bowl app-state) +.u.next)
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%peer (~(handle-peer handler bowl app-state) +.u.next)
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%diff (~(handle-diff handler bowl app-state) +.u.next)
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%take (~(handle-take handler bowl app-state) +.u.next)
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==
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?- -.out
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%& p.out
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%| |= async-input:async-lib
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[~ ~ ~ %fail %crash p.out]
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==
|
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(take-async bowl ~)
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::
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:: Cancel outstanding contracts
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::
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++ cancel-contracts
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|= contracts=(set contract)
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^- (quip move this-tapp)
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[(zing (turn ~(tap in contracts) cancel-contract)) this-tapp]
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::
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:: Cancel individual contract
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::
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++ cancel-contract
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|= =contract
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^- (list move)
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?- -.contract
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%wait [ost.bowl %rest /note/(scot %da at.contract) at.contract]~
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%hiss ~ :: can't cancel; will ignore response
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==
|
|
--
|
|
--
|