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163 lines
4.3 KiB
Plaintext
163 lines
4.3 KiB
Plaintext
:: ethio: Asynchronous Ethereum input/output functions.
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::.
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/+ strandio
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=, ethereum-types
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=, able:jael
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::
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=> |%
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+$ topics (list ?(@ux (list @ux)))
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--
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|%
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:: +request-rpc: send rpc request, with retry
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::
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++ request-rpc
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|= [url=@ta id=(unit @t) req=request:rpc:ethereum]
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=/ m (strand:strandio ,json)
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^- form:m
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|^ %+ (retry:strandio json) `10
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=/ m (strand:strandio ,(unit json))
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^- form:m
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=/ =request:http
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:* method=%'POST'
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url=url
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header-list=['Content-Type'^'application/json' ~]
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^= body
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%- some %- as-octt:mimes:html
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%- en-json:html
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(request-to-json:rpc:ethereum id req)
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==
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;< ~ bind:m (send-request:strandio request)
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;< rep=(unit client-response:iris) bind:m
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take-maybe-response:strandio
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?~ rep
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(pure:m ~)
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(parse-response u.rep)
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::
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++ parse-response
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|= =client-response:iris
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=/ m (strand:strandio ,(unit json))
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^- form:m
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?> ?=(%finished -.client-response)
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?~ full-file.client-response
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(pure:m ~)
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=/ body=@t q.data.u.full-file.client-response
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=/ jon=(unit json) (de-json:html body)
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?~ jon
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(pure:m ~)
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=, dejs-soft:format
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=/ array=(unit (list response:rpc:jstd))
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((ar parse-one-response) u.jon)
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?~ array
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=/ res=(unit response:rpc:jstd) (parse-one-response u.jon)
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?~ res
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(strand-fail:strandio %request-rpc-parse-error >id< ~)
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?: ?=(%error -.u.res)
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(strand-fail:strandio %request-rpc-error >id< >+.res< ~)
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?. ?=(%result -.u.res)
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(strand-fail:strandio %request-rpc-fail >u.res< ~)
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(pure:m `res.u.res)
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(strand-fail:strandio %request-rpc-batch >%not-implemented< ~)
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:: (pure:m `[%batch u.array])
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::
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++ parse-one-response
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|= =json
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^- (unit response:rpc:jstd)
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=/ res=(unit [@t ^json])
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%. json
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=, dejs-soft:format
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(ot id+so result+some ~)
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?^ res `[%result u.res]
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~| parse-one-response=json
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:+ ~ %error %- need
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%. json
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=, dejs-soft:format
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(ot id+so error+(ot code+no message+so ~) ~)
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--
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:: +read-contract: calls a read function on a contract, produces result hex
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::
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++ read-contract
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|= [url=@t proto-read-request:rpc:ethereum]
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=/ m (strand:strandio ,@t)
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;< =json bind:m
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%^ request-rpc url id
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:+ %eth-call
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^- call:rpc:ethereum
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[~ to ~ ~ ~ `tape`(encode-call:rpc:ethereum function arguments)]
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[%label %latest]
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?. ?=(%s -.json) (strand-fail:strandio %request-rpc-fail >json< ~)
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(pure:m p.json)
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::
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++ get-latest-block
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|= url=@ta
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=/ m (strand:strandio ,block)
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^- form:m
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;< =json bind:m
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(request-rpc url `'block number' %eth-block-number ~)
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(get-block-by-number url (parse-eth-block-number:rpc:ethereum json))
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::
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++ get-block-by-number
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|= [url=@ta =number:block]
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=/ m (strand:strandio ,block)
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^- form:m
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|^
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;< =json bind:m
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%+ request-rpc url
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:- `'block by number'
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[%eth-get-block-by-number number |]
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=/ =block (parse-block json)
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?. =(number number.id.block)
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(strand-fail:strandio %reorg-detected >number< >block< ~)
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(pure:m block)
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::
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++ parse-block
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|= =json
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^- block
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=< [[&1 &2] |2]
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^- [@ @ @]
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~| json
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%. json
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=, dejs:format
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%- ot
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:~ hash+parse-hex-result:rpc:ethereum
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number+parse-hex-result:rpc:ethereum
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'parentHash'^parse-hex-result:rpc:ethereum
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==
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--
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::
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++ get-logs-by-hash
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|= [url=@ta =hash:block contracts=(list address) =topics]
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=/ m (strand:strandio (list event-log:rpc:ethereum))
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^- form:m
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;< =json bind:m
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%+ request-rpc url
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:* `'logs by hash'
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%eth-get-logs-by-hash
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hash
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contracts
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topics
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==
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%- pure:m
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(parse-event-logs:rpc:ethereum json)
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::
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++ get-logs-by-range
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|= $: url=@ta
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contracts=(list address)
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=topics
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=from=number:block
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=to=number:block
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==
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=/ m (strand:strandio (list event-log:rpc:ethereum))
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^- form:m
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;< =json bind:m
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%+ request-rpc url
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:* `'logs by range'
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%eth-get-logs
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`number+from-number
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`number+to-number
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contracts
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topics
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==
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%- pure:m
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(parse-event-logs:rpc:ethereum json)
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--
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