mirror of
https://github.com/ilyakooo0/urbit.git
synced 2024-12-16 02:22:12 +03:00
Merge pull request #1081 from urbit/eth-watcher
Implement %eth-watcher, an app for tracking Ethereum events
This commit is contained in:
Fang
GitHub
commit
8afb61786b
568
app/eth-watcher.hoon
Normal file
568
app/eth-watcher.hoon
Normal file
@ -0,0 +1,568 @@
|
||||
:: watcher: ethereum event log collector
|
||||
::
|
||||
/+ *eth-watcher
|
||||
::
|
||||
=, ethereum
|
||||
=, rpc
|
||||
::
|
||||
|%
|
||||
++ state
|
||||
$: eyes=(map name eye)
|
||||
==
|
||||
::
|
||||
++ eye
|
||||
$: config
|
||||
latest-block=@ud
|
||||
filter-id=@ud
|
||||
poll-timer=(unit @da)
|
||||
snapshot
|
||||
sap=history
|
||||
==
|
||||
::
|
||||
++ history
|
||||
$: interval=_100
|
||||
max-count=_10
|
||||
count=@ud
|
||||
latest-block=@ud
|
||||
snaps=(qeu snapshot)
|
||||
==
|
||||
::
|
||||
++ move (pair bone card)
|
||||
++ card
|
||||
$% [%hiss wire (unit user:eyre) mark %hiss hiss:eyre]
|
||||
[%wait wire @da]
|
||||
[%rest @da]
|
||||
[%info wire desk nori:clay]
|
||||
[%diff %eth-watcher-update update]
|
||||
[%quit ~]
|
||||
==
|
||||
--
|
||||
::
|
||||
|_ [bowl:gall state]
|
||||
::
|
||||
++ prep
|
||||
|= old=(unit state)
|
||||
?~ old
|
||||
[~ ..prep]
|
||||
[~ ..prep(+<+ u.old)]
|
||||
::
|
||||
++ poke-noun
|
||||
|= [what=?(%save %load) =name]
|
||||
^- (quip move _+>)
|
||||
=+ eye=(fall (~(get by eyes) name) *eye)
|
||||
?- what
|
||||
%save
|
||||
=/ pax=path
|
||||
/(scot %p our)/home/(scot %da now)/watcher/[name]/jam
|
||||
:_ +>.$
|
||||
:_ ~
|
||||
^- move
|
||||
:* ost
|
||||
%info
|
||||
/jamfile
|
||||
(foal:space:userlib pax [%jam !>((jam eye))])
|
||||
==
|
||||
::
|
||||
%load
|
||||
=. eyes
|
||||
%+ ~(put by eyes) name
|
||||
=- (^eye (cue .^(@ %cx -)))
|
||||
/(scot %p our)/home/(scot %da now)/watcher/[name]/jam
|
||||
done:new-filter:(open:watcher name)
|
||||
==
|
||||
::
|
||||
++ poke-eth-watcher-action
|
||||
|= act=action
|
||||
^- (quip move _+>)
|
||||
?- -.act
|
||||
%watch
|
||||
done:(init:watcher +.act)
|
||||
::
|
||||
%clear
|
||||
wipe:(open:watcher +.act)
|
||||
==
|
||||
::
|
||||
++ peek-x
|
||||
|= pax=path
|
||||
^- (unit (unit [%noun *]))
|
||||
?. ?=([@ *] pax) ~
|
||||
=+ eye=(~(get by eyes) i.pax)
|
||||
?~ eye [~ ~]
|
||||
:: /name: all logs
|
||||
::
|
||||
?~ t.pax ``[%noun logs.u.eye]
|
||||
:: /name/num: most recent num logs
|
||||
::
|
||||
=+ num=(slaw %ud i.t.pax)
|
||||
?^ num ``[%noun (scag u.num logs.u.eye)]
|
||||
:: /name/debug: debug information
|
||||
::
|
||||
?. ?=(%debug i.t.pax) ~
|
||||
=- ``[%noun -]
|
||||
=, u.eye
|
||||
:* node=(en-purl:html node)
|
||||
last=last-heard-block
|
||||
lent=(lent logs)
|
||||
time=poll-timer
|
||||
==
|
||||
::
|
||||
++ peer
|
||||
|= pax=path
|
||||
^- (quip move _+>)
|
||||
?> ?=([@ ~] pax)
|
||||
done:(put-snapshot-diff:(open:watcher i.pax) ost)
|
||||
::
|
||||
++ wake
|
||||
|= [wir=wire ~]
|
||||
^- (quip move _+>)
|
||||
?> ?=([@ %poll ~] wir)
|
||||
done:poll-filter:(open:watcher i.wir)
|
||||
::
|
||||
++ sigh-tang
|
||||
|= [wir=wire res=tang]
|
||||
^- (quip move _+>)
|
||||
~& ['something went wrong!' wir]
|
||||
~_ res
|
||||
[~ +>.$]
|
||||
::
|
||||
++ sigh-json-rpc-response
|
||||
|= [wir=wire res=response:rpc:jstd]
|
||||
^- (quip move _+>)
|
||||
?> ?=([@ *] wir)
|
||||
=< done
|
||||
%- sigh-json-rpc-response:(open:watcher i.wir)
|
||||
[t.wir res]
|
||||
::
|
||||
++ watcher
|
||||
|_ $: =name
|
||||
=eye
|
||||
rewind-block=(unit @ud)
|
||||
new-logs=loglist
|
||||
moves=(list move)
|
||||
==
|
||||
::
|
||||
:: +open: initialize core
|
||||
::
|
||||
++ open
|
||||
|= nom=^name
|
||||
^+ +>
|
||||
+>.$(name nom, eye (~(got by eyes) nom))
|
||||
::
|
||||
:: +init: set up eye and initialize core
|
||||
::
|
||||
++ init
|
||||
|= [nom=^name =config]
|
||||
^+ +>
|
||||
=. name nom
|
||||
=. eye
|
||||
%*(. *^eye - config, last-heard-block from-block.config)
|
||||
get-latest-block
|
||||
::
|
||||
:: +| outward
|
||||
::
|
||||
:: +wipe: delete eye
|
||||
::
|
||||
++ wipe
|
||||
=> cancel-wait-poll
|
||||
=> cancel-subscribers
|
||||
:- (flop moves)
|
||||
..watcher(eyes (~(del by eyes) name))
|
||||
::
|
||||
:: +done: store changes, update subscribers
|
||||
::
|
||||
++ done
|
||||
^- [(list move) _..watcher]
|
||||
=? . ?=(^ rewind-block)
|
||||
:: if we're rewinding to a block, then we throw away any moves
|
||||
:: and changes we were going to make.
|
||||
::
|
||||
=: moves *(list move)
|
||||
new-logs *loglist
|
||||
==
|
||||
(restore-block u.rewind-block)
|
||||
:: if we have any updates, send them
|
||||
::
|
||||
=? . !=(~ new-logs)
|
||||
(fan-diff %logs new-logs)
|
||||
:: produce moves, store updated state
|
||||
::
|
||||
:- (flop moves)
|
||||
..watcher(eyes (~(put by eyes) name eye))
|
||||
::
|
||||
:: +put-move: store side-effect
|
||||
::
|
||||
++ put-move
|
||||
|= =card
|
||||
%_(+> moves [[ost card] moves])
|
||||
::
|
||||
++ put-moves
|
||||
|= moz=(list move)
|
||||
%_(+> moves (weld (flop moz) moves))
|
||||
::
|
||||
:: +put-rpc-request: store rpc request to ethereum node
|
||||
::
|
||||
++ put-rpc-request
|
||||
|= [wir=wire id=(unit @t) req=request]
|
||||
^+ +>
|
||||
%- put-move
|
||||
^- card
|
||||
:* %hiss
|
||||
[name wir]
|
||||
~
|
||||
%json-rpc-response
|
||||
%hiss
|
||||
%+ json-request node.eye
|
||||
(request-to-json id req)
|
||||
==
|
||||
::
|
||||
:: +put-log: store change made by event
|
||||
::
|
||||
++ put-log
|
||||
|= log=event-log
|
||||
%_ +>
|
||||
new-logs (store-new-logs ~[log] new-logs)
|
||||
logs.eye (store-new-logs ~[log] logs.eye)
|
||||
heard.eye (~(put in heard.eye) (log-to-id log))
|
||||
==
|
||||
::
|
||||
:: +| subscriptions
|
||||
::
|
||||
++ put-diff
|
||||
|= [for=bone dif=update]
|
||||
%_(+> moves [[for %diff %eth-watcher-update dif] moves])
|
||||
::
|
||||
++ put-snapshot-diff
|
||||
|= for=bone
|
||||
(put-diff for %snap last-heard-block.eye heard.eye logs.eye)
|
||||
::
|
||||
++ get-subscribers
|
||||
^- (list bone)
|
||||
%+ murn ~(tap by sup)
|
||||
|= [b=bone s=ship p=path]
|
||||
^- (unit bone)
|
||||
?> ?=([@ *] p)
|
||||
?:(=(name i.p) `b ~)
|
||||
::
|
||||
++ fan-diff
|
||||
|= dif=update
|
||||
%- put-moves
|
||||
%+ turn get-subscribers
|
||||
|= b=bone
|
||||
^- move
|
||||
[b %diff %eth-watcher-update dif]
|
||||
::
|
||||
++ cancel-subscribers
|
||||
%- put-moves
|
||||
%+ turn get-subscribers
|
||||
|=(b=bone [b %quit ~])
|
||||
::
|
||||
:: +| catch-up-operations
|
||||
::
|
||||
:: +get-latest-block
|
||||
::
|
||||
:: Get latest block from eth node and compare to our own latest block.
|
||||
:: Get intervening blocks in chunks until we're caught up, then set
|
||||
:: up a filter going forward.
|
||||
::
|
||||
++ get-latest-block
|
||||
=> cancel-wait-poll
|
||||
(put-rpc-request /catch-up/block-number `'block number' %eth-block-number ~)
|
||||
::
|
||||
:: +catch-up: get next chunk
|
||||
::
|
||||
++ catch-up
|
||||
|= from-block=@ud
|
||||
^+ +>
|
||||
?: (gte from-block latest-block.eye)
|
||||
new-filter
|
||||
=/ next-block (min latest-block.eye (add from-block 5.760)) :: ~d1
|
||||
~? debug=|
|
||||
[%catching-up from=from-block to=latest-block.eye]
|
||||
%- put-rpc-request
|
||||
:+ /catch-up/step/(scot %ud from-block)/(scot %ud next-block)
|
||||
`'catch up'
|
||||
:* %eth-get-logs
|
||||
`number+from-block
|
||||
`number+next-block
|
||||
contracts.eye
|
||||
topics.eye
|
||||
==
|
||||
::
|
||||
:: +| filter-operations
|
||||
::
|
||||
:: +new-filter: request a new polling filter
|
||||
::
|
||||
:: Listens from the last-heard block onward.
|
||||
::
|
||||
++ new-filter
|
||||
%- put-rpc-request
|
||||
:+ /filter/new `'new filter'
|
||||
^- request:rpc
|
||||
:* %eth-new-filter
|
||||
`number+last-heard-block.eye
|
||||
?~(to-block.eye ~ `number+u.to-block.eye)
|
||||
contracts.eye
|
||||
topics.eye
|
||||
==
|
||||
::
|
||||
:: +read-filter: get all events the filter captures
|
||||
::
|
||||
++ read-filter
|
||||
%- put-rpc-request
|
||||
:+ /filter/logs `'filter logs'
|
||||
[%eth-get-filter-logs filter-id.eye]
|
||||
::
|
||||
:: +poll-filter: get all new events since last poll (or filter creation)
|
||||
::
|
||||
++ poll-filter
|
||||
?: =(0 filter-id.eye)
|
||||
~& %no-filter-bad-poll
|
||||
.
|
||||
%- put-rpc-request
|
||||
:+ /filter/changes `'poll filter'
|
||||
[%eth-get-filter-changes filter-id.eye]
|
||||
::
|
||||
:: +wait-poll: remind us to poll in four minutes
|
||||
::
|
||||
:: Four minutes because Ethereum RPC filters time out after five.
|
||||
:: We don't check for an existing timer or clear an old one here,
|
||||
:: sane flows shouldn't see this being called superfluously.
|
||||
::
|
||||
++ wait-poll
|
||||
=+ wen=(add now ~m4)
|
||||
%- put-move(poll-timer.eye `wen)
|
||||
[%wait name^/poll wen]
|
||||
::
|
||||
:: +cancel-wait-poll: remove poll reminder
|
||||
::
|
||||
++ cancel-wait-poll
|
||||
?~ poll-timer.eye ..cancel-wait-poll
|
||||
%- put-move(poll-timer.eye ~)
|
||||
[%rest u.poll-timer.eye]
|
||||
::
|
||||
:: +| filter-results
|
||||
::
|
||||
:: +sigh-json-rpc-response: process rpc response
|
||||
::
|
||||
++ sigh-json-rpc-response
|
||||
|= [wir=wire res=response:rpc:jstd]
|
||||
^+ +>
|
||||
~! -.res
|
||||
?: ?=(%fail -.res)
|
||||
?: =(405 p.hit.res)
|
||||
~& 'HTTP 405 error (expected if using infura)'
|
||||
+>.$
|
||||
?. =(5 (div p.hit.res 100))
|
||||
~& [%http-error hit.res]
|
||||
+>.$
|
||||
?+ wir
|
||||
~& [%retrying-node ~] ::((soft tang) q.res)]
|
||||
wait-poll
|
||||
[%catch-up %step @ta @ta ~]
|
||||
~& %retrying-catch-up
|
||||
(catch-up (slav %ud `@ta`i.t.t.wir))
|
||||
==
|
||||
?+ wir ~|([%weird-sigh-wire wir] !!)
|
||||
[%filter %new *]
|
||||
(take-new-filter res)
|
||||
::
|
||||
[%filter *]
|
||||
(take-filter-results res)
|
||||
::
|
||||
[%catch-up %block-number ~]
|
||||
(take-block-number res)
|
||||
::
|
||||
[%catch-up %step @ta @ta ~]
|
||||
=/ from-block (slav %ud `@ta`i.t.t.wir)
|
||||
=/ next-block (slav %ud `@ta`i.t.t.t.wir)
|
||||
(take-catch-up-step res from-block next-block)
|
||||
==
|
||||
::
|
||||
:: +take-new-filter: store filter-id and read it
|
||||
::
|
||||
++ take-new-filter
|
||||
|= rep=response:rpc:jstd
|
||||
^+ +>
|
||||
~| rep
|
||||
?< ?=(%batch -.rep)
|
||||
?< ?=(%fail -.rep)
|
||||
?: ?=(%error -.rep)
|
||||
~& [%filter-error--retrying message.rep]
|
||||
new-filter
|
||||
=- read-filter(filter-id.eye -)
|
||||
(parse-eth-new-filter-res res.rep)
|
||||
::
|
||||
:: +take-filter-results: parse results into event-logs and process them
|
||||
::
|
||||
++ take-filter-results
|
||||
|= rep=response:rpc:jstd
|
||||
^+ +>
|
||||
?< ?=(%batch -.rep)
|
||||
?< ?=(%fail -.rep)
|
||||
?: ?=(%error -.rep)
|
||||
?. ?| =('filter not found' message.rep) :: geth
|
||||
=('Filter not found' message.rep) :: parity
|
||||
==
|
||||
~& [%unhandled-filter-error +.rep]
|
||||
+>
|
||||
~& [%filter-timed-out--recreating block=last-heard-block.eye +.rep]
|
||||
:: arguably should rewind 40 blocks on the off chance the chain reorganized
|
||||
:: when we blinked. this will also restart the filter.
|
||||
::
|
||||
:: (restore-block ?:((lth last-heard-block 40) 0 (sub.add last-heard-block 40)))
|
||||
::
|
||||
:: counter-argument: it's a royal pain to restore from a snapshot
|
||||
:: every time you can't ping the node for 5 minutes. this is likely
|
||||
:: to destabilize the network. better to manually restore if we
|
||||
:: notice an anomaly.
|
||||
::
|
||||
:: third way: don't trust anything that doesn't have 40 confirmations
|
||||
::
|
||||
new-filter
|
||||
:: kick polling timer, only if it hasn't already been.
|
||||
=? +> |(?=(~ poll-timer.eye) (gth now u.poll-timer.eye))
|
||||
wait-poll
|
||||
(take-events rep)
|
||||
::
|
||||
:: +take-block-number: take block number and start catching up
|
||||
::
|
||||
++ take-block-number
|
||||
|= rep=response:rpc:jstd
|
||||
^+ +>
|
||||
?< ?=(%batch -.rep)
|
||||
?< ?=(%fail -.rep)
|
||||
?: ?=(%error -.rep)
|
||||
~& [%take-block-number-error--retrying message.rep]
|
||||
get-latest-block
|
||||
=. latest-block.eye (parse-eth-block-number res.rep)
|
||||
(catch-up last-heard-block.eye)
|
||||
::
|
||||
:: +take-catch-up-step: process chunk
|
||||
::
|
||||
++ take-catch-up-step
|
||||
|= [rep=response:rpc:jstd from-block=@ud next-block=@ud]
|
||||
^+ +>
|
||||
?< ?=(%batch -.rep)
|
||||
?< ?=(%fail -.rep)
|
||||
?: ?=(%error -.rep)
|
||||
~& [%catch-up-step-error--retrying message.rep]
|
||||
(catch-up from-block)
|
||||
=. +>.$ (take-events rep)
|
||||
(catch-up next-block)
|
||||
::
|
||||
:: +take-events: process events
|
||||
::
|
||||
++ take-events
|
||||
|= rep=response:rpc:jstd
|
||||
^+ +>
|
||||
?< ?=(%batch -.rep)
|
||||
?< ?=(%fail -.rep)
|
||||
?< ?=(%error -.rep)
|
||||
?. ?=(%a -.res.rep)
|
||||
~& [%events-not-array rep]
|
||||
!!
|
||||
=* changes p.res.rep
|
||||
~? &(debug=| (gth (lent changes) 0))
|
||||
:* %processing-changes
|
||||
changes=(lent changes)
|
||||
block=last-heard-block.eye
|
||||
id=filter-id.eye
|
||||
==
|
||||
|- ^+ +>.^$
|
||||
?~ changes +>.^$
|
||||
=. +>.^$
|
||||
(take-event-log (parse-event-log i.changes))
|
||||
$(changes t.changes)
|
||||
::
|
||||
:: +take-event-log: obtain changes from event-log
|
||||
::
|
||||
++ take-event-log
|
||||
|= log=event-log
|
||||
^+ +>
|
||||
?~ mined.log
|
||||
~& %ignoring-unmined-event
|
||||
+>
|
||||
=* place u.mined.log
|
||||
?: (~(has in heard.eye) block-number.place log-index.place)
|
||||
?. removed.u.mined.log
|
||||
~? debug=|
|
||||
[%ignoring-duplicate-event tx=transaction-hash.u.mined.log]
|
||||
+>
|
||||
:: block was reorganized away, so rewind to this block and
|
||||
:: start syncing again.
|
||||
::
|
||||
~& :* 'removed event! Perhaps chain has reorganized?'
|
||||
tx-hash=transaction-hash.u.mined.log
|
||||
block-number=block-number.u.mined.log
|
||||
block-hash=block-hash.u.mined.log
|
||||
==
|
||||
%= +>
|
||||
rewind-block
|
||||
:- ~
|
||||
?~ rewind-block
|
||||
block-number.place
|
||||
(min block-number.place u.rewind-block)
|
||||
==
|
||||
=. last-heard-block.eye
|
||||
(max block-number.place last-heard-block.eye)
|
||||
?: ?& (gte block-number.place from-block.eye)
|
||||
?| ?=(~ to-block.eye)
|
||||
(lte block-number.place u.to-block.eye)
|
||||
==
|
||||
==
|
||||
(put-log log)
|
||||
~& :* %event-block-out-of-range
|
||||
got=block-number.place
|
||||
from=from-block.eye
|
||||
to=to-block.eye
|
||||
==
|
||||
+>.$
|
||||
::
|
||||
:: +restore-block: rewind to block or earlier
|
||||
::
|
||||
++ restore-block
|
||||
|= block=@ud
|
||||
^+ +>
|
||||
=/ old-qeu snaps.sap.eye
|
||||
:: clear history
|
||||
::
|
||||
=: snaps.sap.eye ~
|
||||
count.sap.eye 0
|
||||
latest-block.sap.eye 0
|
||||
==
|
||||
:: find a snapshot we can use, remove ones that are too new
|
||||
::
|
||||
=^ snap=snapshot +>.$
|
||||
?: |(=(~ old-qeu) (lth block last-heard-block:(need ~(top to old-qeu))))
|
||||
[%*(. *snapshot last-heard-block from-block.eye) +>.$]
|
||||
|- ^- [snapshot _+>.^$]
|
||||
=^ snap=snapshot old-qeu
|
||||
~(get to old-qeu)
|
||||
=: count.sap.eye +(count.sap.eye)
|
||||
latest-block.sap.eye last-heard-block.snap
|
||||
snaps.sap.eye (~(put to snaps.sap.eye) snap)
|
||||
==
|
||||
?: |(=(~ old-qeu) (lth block last-heard-block:(need ~(top to old-qeu))))
|
||||
[snap +>.^$]
|
||||
$
|
||||
~& [%restoring-block block last-heard-block.snap]
|
||||
(restore-snap snap)
|
||||
::
|
||||
:: +restore-snap: revert state to snapshot
|
||||
::
|
||||
++ restore-snap
|
||||
|= snap=snapshot
|
||||
^+ +>
|
||||
:: notify subscribers
|
||||
::TODO be more nuanced about what changed, maybe
|
||||
::
|
||||
=. +>.$ (fan-diff snap+snap)
|
||||
:: restore state and kick new fetch cycle
|
||||
::
|
||||
%= get-latest-block
|
||||
last-heard-block.eye last-heard-block.snap
|
||||
heard.eye heard.snap
|
||||
logs.eye logs.snap
|
||||
==
|
||||
--
|
||||
--
|
||||
38
lib/eth-watcher.hoon
Normal file
38
lib/eth-watcher.hoon
Normal file
@ -0,0 +1,38 @@
|
||||
:: eth-watcher utilities
|
||||
::
|
||||
/- *eth-watcher
|
||||
::
|
||||
|%
|
||||
:: +log-to-id: extract the event-id from an event-log
|
||||
::
|
||||
++ log-to-id
|
||||
|= log=event-log:rpc:ethereum
|
||||
^- event-id:ethereum
|
||||
?> ?=(^ mined.log)
|
||||
:- block-number.u.mined.log
|
||||
log-index.u.mined.log
|
||||
::
|
||||
:: +store-new-logs: add logs to an old loglist, ensuring newest-first ordering
|
||||
::
|
||||
:: assumes :new is already ordered newest-first
|
||||
::
|
||||
++ store-new-logs
|
||||
|= [new=loglist old=loglist]
|
||||
^- loglist
|
||||
?~ new old
|
||||
=+ new-place=(log-to-id i.new)
|
||||
|-
|
||||
?~ old [i.new old]
|
||||
=+ old-place=(log-to-id i.old)
|
||||
:: if the :old-place is older than :new-place,
|
||||
:: put :new-place down, and grab the next one from :new
|
||||
:: otherwise, keep looking through :old
|
||||
::
|
||||
?: ?| (gth block.new-place block.old-place)
|
||||
?& =(block.new-place block.old-place)
|
||||
(gth log.new-place log.old-place)
|
||||
==
|
||||
==
|
||||
[i.new ^$(new t.new)]
|
||||
[i.old $(old t.old)]
|
||||
--
|
||||
7
mar/eth-watcher/action.hoon
Normal file
7
mar/eth-watcher/action.hoon
Normal file
@ -0,0 +1,7 @@
|
||||
/- *eth-watcher
|
||||
|_ act=action
|
||||
++ grab
|
||||
|%
|
||||
++ noun action
|
||||
--
|
||||
--
|
||||
7
mar/eth-watcher/update.hoon
Normal file
7
mar/eth-watcher/update.hoon
Normal file
@ -0,0 +1,7 @@
|
||||
/- *eth-watcher
|
||||
|_ upd=update
|
||||
++ grab
|
||||
|%
|
||||
++ noun update
|
||||
--
|
||||
--
|
||||
39
sur/eth-watcher.hoon
Normal file
39
sur/eth-watcher.hoon
Normal file
@ -0,0 +1,39 @@
|
||||
:: watcher: ethereum event log collector
|
||||
::
|
||||
|%
|
||||
++ name @tas
|
||||
::
|
||||
++ config
|
||||
$: node=purl:eyre
|
||||
from-block=@ud
|
||||
to-block=(unit @ud)
|
||||
contracts=(list address:ethereum)
|
||||
topics=(list $@(@ux (list @ux)))
|
||||
==
|
||||
::
|
||||
++ action
|
||||
$% [%watch =name =config]
|
||||
::TODO support modifying existing config for future polling
|
||||
[%clear =name]
|
||||
==
|
||||
::
|
||||
++ update
|
||||
$% :: %snap: all known-good logs, sent on-subscribe and on-reorg
|
||||
::TODO there's probably a way to be more nuanced about what we forgot
|
||||
:: to cope with a reorg
|
||||
::
|
||||
[%snap =snapshot]
|
||||
:: %vent: newly added logs
|
||||
::
|
||||
[%logs =loglist]
|
||||
==
|
||||
::
|
||||
++ snapshot
|
||||
$: last-heard-block=@ud
|
||||
heard=(set event-id:ethereum)
|
||||
logs=loglist
|
||||
==
|
||||
::
|
||||
++ loglist
|
||||
(list event-log:rpc:ethereum) :: newest first
|
||||
--
|
||||
Loading…
Reference in New Issue
Block a user