mirror of
https://github.com/ilyakooo0/urbit.git
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276 lines
7.2 KiB
Plaintext
276 lines
7.2 KiB
Plaintext
:: btc-wallet-store.hoon
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:: Manages wallet pubkeys
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::
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:: Subscribes to: none
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::
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:: Sends updates on:
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:: - /requests: to request data about addresses
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:: - /updates: new data about one of our addresses
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::
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:: Scrys
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:: x/scanned: (list xpub) of all scanned wallets
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:: x/balance/xpub: balance (in sats) of wallet
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::
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/- *btc-wallet-store
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/+ dbug, default-agent, *btc-wallet-store, btc, bip32
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|%
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+$ versioned-state
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$% state-0
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==
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:: walts: all wallets, keyed by their xpubs
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:: scans: batch info for wallets being scanned
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:: batch-size: how many addresses to send out at once for checking
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:: last-block: most recent block seen by the store
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::
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+$ state-0
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$: %0
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walts=(map xpub:btc walt)
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=scans
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batch-size=@ud
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last-block=@ud
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==
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::
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+$ card card:agent:gall
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::
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--
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=| state-0
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=* state -
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%- agent:dbug
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^- agent:gall
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=<
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|_ =bowl:gall
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+* this .
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def ~(. (default-agent this %|) bowl)
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hc ~(. +> bowl)
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::
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++ on-init
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^- (quip card _this)
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~& > '%btc-wallet-store initialized'
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`this(state [%0 *(map xpub:btc walt) *^scans max-gap:defaults 0])
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++ on-save
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^- vase
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!>(state)
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++ on-load
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|= old-state=vase
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^- (quip card _this)
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~& > '%btc-wallet-store recompiled'
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`this(state !<(versioned-state old-state))
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++ on-poke
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|= [=mark =vase]
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^- (quip card _this)
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?> (team:title our.bowl src.bowl)
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=^ cards state
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?+ mark (on-poke:def mark vase)
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%btc-wallet-store-action
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(handle-action:hc !<(action vase))
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==
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[cards this]
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::
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++ on-watch
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|= pax=path
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^- (quip card _this)
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?> (team:title our.bowl src.bowl)
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?+ pax (on-watch:def pax)
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[%requests *]
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:_ this
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%- zing
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%~ val by
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%- ~(urn by scans)
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|* [k=[=xpub:btc =chyg] b=batch]
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^- (list card)
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(req-scan ~ b xpub.k chyg.k)
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::
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[%updates *]
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`this
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==
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++ on-peek
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|= pax=path
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^- (unit (unit cage))
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?+ pax (on-peek:def pax)
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[%x %scanned ~]
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``noun+!>(scanned-wallets)
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::
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[%x %balance @ ~]
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``noun+!>((balance:hc (xpub:btc +>-.pax)))
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==
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++ on-leave on-leave:def
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++ on-agent on-agent:def
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++ on-arvo on-arvo:def
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++ on-fail on-fail:def
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--
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::
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|_ =bowl:gall
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++ handle-action
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|= act=action
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^- (quip card _state)
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?- -.act
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%add-wallet
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=/ w=walt (from-xpub +.act)
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=. walts (~(put by walts) xpub.act w)
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(init-batches xpub.act (dec max-gap.w))
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::
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%address-info
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(update-address +.act)
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::
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%generate-address
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=/ uw=(unit walt) (~(get by walts) xpub.act)
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?~ uw
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~|("btc-wallet-store: non-existent xpub" !!)
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=/ [a=address:btc w=walt]
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~(gen-address wad u.uw chyg.act)
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:_ state(walts (~(put by walts) xpub.act w))
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~[(send-update [%generate-address a meta.act])]
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::
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%generate-txbu
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=/ uw=(unit walt) (~(get by walts) xpub.act)
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?~ uw ~&(>>> "btc-wallet-store: non-existent xpub" `state)
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=/ r=(unit [=vbytes:btc =txbu])
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%~ select-utxos sut
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[u.uw eny.bowl +>.act]
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?~ r ~&(>>> "btc-wallet-store: insufficient balance" `state)
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:_ state
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~[(send-update [%generate-txbu xpub.act u.r])]
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==
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:: wallet scan algorithm:
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:: Initiate a batch for each chyg, with max-gap idxs in it
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:: Send that to /requests subscribers to call out to providers and get the info
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:: Whenever a %watch-address result comes back
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:: - remove that idx from todo.batch
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:: - do run-scan to check whether that chyg is done
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:: - if it isn't, refill it with idxs to scan
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::
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++ req-scan
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|= [pax=(list path) b=batch =xpub =chyg]
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^- (list card)
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=/ w=walt (~(got by walts) xpub)
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%+ turn ~(tap in todo.b)
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|= =idx
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:* %give %fact pax
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%btc-wallet-store-request
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!>([%scan-address (~(mk-address wad w chyg) idx) xpub chyg idx])
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==
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::
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++ scan-status
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|= [=xpub =chyg]
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^- [empty=? done=?]
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=/ b=batch (~(got by scans) [xpub chyg])
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=/ empty=? =(0 ~(wyt in todo.b))
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:- empty
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?&(empty ?!(has-used.b))
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::
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++ insert-batches
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|= [=xpub b0=batch b1=batch]
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^- ^scans
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=. scans (~(put by scans) [xpub %0] b0)
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(~(put by scans) [xpub %1] b1)
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::
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++ init-batches
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|= [=xpub endpoint=idx]
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^- (quip card _state)
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=/ b=batch
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[(sy (gulf 0 endpoint)) endpoint %.n]
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:- (weld (req-scan ~[/requests] b xpub %0) (req-scan ~[/requests] b xpub %1))
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state(scans (insert-batches xpub b b))
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:: if the batch is done but the wallet isn't done scanning,
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:: returns new address requests and updated batch
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::
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++ bump-batch
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|= [=xpub =chyg]
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^- (quip card batch)
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=/ b=batch (~(got by scans) xpub chyg)
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=/ s (scan-status xpub chyg)
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?. ?&(empty.s ?!(done.s))
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`b
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=/ w=walt (~(got by walts) xpub)
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=/ newb=batch
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:* (sy (gulf +(endpoint.b) (add endpoint.b max-gap.w)))
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(add endpoint.b max-gap.w)
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%.n
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==
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:- (req-scan ~[/requests] newb xpub chyg)
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newb
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::
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++ iter-scan
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|= [b=batch =xpub =chyg to-delete=idx]
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^- ^scans
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%+ ~(put by scans) [xpub chyg]
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b(todo (~(del in todo.b) to-delete))
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:: delete the xpub from scans and set wallet to scanned
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::
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++ end-scan
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|= [=xpub]
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^- (quip card _state)
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=/ w=walt (~(got by walts) xpub)
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=. scans (~(del by scans) [xpub %0])
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=. scans (~(del by scans) [xpub %1])
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:- ~[[%give %fact ~[/updates] %btc-wallet-store-update !>([%scan-done xpub])]]
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state(walts (~(put by walts) xpub w(scanned %.y)))
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:: initiate a scan if one hasn't started
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:: check status of scan if one is running
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::
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++ run-scan
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|= =xpub
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^- (quip card _state)
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=/ s0 (scan-status xpub %0)
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=/ s1 (scan-status xpub %1)
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?: ?&(empty.s0 done.s0 empty.s1 done.s1)
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(end-scan xpub)
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=/ [cards0=(list card) batch0=batch]
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(bump-batch xpub %0)
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=/ [cards1=(list card) batch1=batch]
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(bump-batch xpub %1)
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:- (weld cards0 cards1)
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state(scans (insert-batches xpub batch0 batch1))
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:: watch the address passed, update wallet if it's used
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:: if this idx was the last in todo.scans, do run-scan to see whether scan is done
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:: updates wallet-store state to have last-block
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::
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++ update-address
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|= [=xpub:btc =chyg =idx utxos=(set utxo) used=? last-block=@ud]
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^- (quip card _state)
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=? state (gth last-block last-block.state)
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state(last-block last-block)
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=/ w=(unit walt) (~(get by walts) xpub)
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?~ w `state
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=? walts used
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%+ ~(put by walts) xpub
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%+ ~(update-address wad u.w chyg)
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(~(mk-address wad u.w chyg) idx)
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[chyg idx utxos]
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:: if the wallet is being scanned, update the scan batch
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::
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?. (~(has by scans) [xpub chyg]) `state
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=/ b=(unit batch) (~(get by scans) [xpub chyg])
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?~ b `state
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=. scans
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(iter-scan u.b(has-used ?|(used has-used.u.b)) xpub chyg idx)
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?: empty:(scan-status xpub chyg)
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(run-scan xpub)
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`state
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::
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++ scanned-wallets
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^- (list xpub)
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%+ murn ~(tap by walts)
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|= [=xpub:btc w=walt]
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^- (unit xpub:btc)
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?: scanned.w `xpub ~
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::
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++ balance
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|= =xpub:btc
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^- sats:btc
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=/ w (~(get by walts) xpub)
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?~ w ~|("btc-wallet-store: non-existent xpub" !!)
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=/ values=(list sats:btc)
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%+ turn ~(val by wach.u.w)
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|= =addi ^- sats:btc
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%+ roll
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%+ turn ~(tap by utxos.addi)
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|=(=utxo:btc value.utxo)
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add
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(roll values add)
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::
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++ send-update
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|= upd=update ^- card
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[%give %fact ~[/updates] %btc-wallet-store-update !>(upd)]
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--
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