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move client.close to a finally

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This commit is contained in:
Iuri Matias 2021-08-06 15:04:09 -04:00
parent 553a698900
commit 86688a7e59
1 changed files with 38 additions and 34 deletions
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72
src/status/libstatus/stickers.nim
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@ -101,43 +101,47 @@ proc getPackCount*(): int =
# Gets sticker pack data # Gets sticker pack data
proc getPackData*(id: Stuint[256], running: var Atomic[bool]): StickerPack = proc getPackData*(id: Stuint[256], running: var Atomic[bool]): StickerPack =
let
contract = contracts.getContract("stickers")
contractMethod = contract.methods["getPackData"]
getPackData = GetPackData(packId: id)
payload = %* [{
"to": $contract.address,
"data": contractMethod.encodeAbi(getPackData)
}, "latest"]
let responseStr = status.callPrivateRPC("eth_call", payload)
let response = Json.decode(responseStr, RpcResponse)
if not response.error.isNil:
raise newException(RpcException, "Error getting sticker pack data: " & response.error.message)
let packData = contracts.decodeContractResponse[PackData](response.result)
if not running.load():
trace "Sticker pack task interrupted, exiting sticker pack loading"
return
# contract response includes a contenthash, which needs to be decoded to reveal
# an IPFS identifier. Once decoded, download the content from IPFS. This content
# is in EDN format, ie https://ipfs.infura.io/ipfs/QmWVVLwVKCwkVNjYJrRzQWREVvEk917PhbHYAUhA1gECTM
# and it also needs to be decoded in to a nim type
let secureSSLContext = newContext() let secureSSLContext = newContext()
let client = newHttpClient(sslContext = secureSSLContext) let client = newHttpClient(sslContext = secureSSLContext)
let contentHash = contracts.toHex(packData.contentHash) try:
let url = "https://ipfs.infura.io/ipfs/" & decodeContentHash(contentHash) let
var ednMeta = client.getContent(url) contract = contracts.getContract("stickers")
contractMethod = contract.methods["getPackData"]
getPackData = GetPackData(packId: id)
payload = %* [{
"to": $contract.address,
"data": contractMethod.encodeAbi(getPackData)
}, "latest"]
let responseStr = status.callPrivateRPC("eth_call", payload)
let response = Json.decode(responseStr, RpcResponse)
if not response.error.isNil:
raise newException(RpcException, "Error getting sticker pack data: " & response.error.message)
# decode the EDN content in to a StickerPack let packData = contracts.decodeContractResponse[PackData](response.result)
result = edn_helpers.decode[StickerPack](ednMeta)
# EDN doesn't include a packId for each sticker, so add it here if not running.load():
result.stickers.apply(proc(sticker: var Sticker) = trace "Sticker pack task interrupted, exiting sticker pack loading"
sticker.packId = truncate(id, int)) return
result.id = truncate(id, int)
result.price = packData.price # contract response includes a contenthash, which needs to be decoded to reveal
client.close() # an IPFS identifier. Once decoded, download the content from IPFS. This content
# is in EDN format, ie https://ipfs.infura.io/ipfs/QmWVVLwVKCwkVNjYJrRzQWREVvEk917PhbHYAUhA1gECTM
# and it also needs to be decoded in to a nim type
let contentHash = contracts.toHex(packData.contentHash)
let url = "https://ipfs.infura.io/ipfs/" & decodeContentHash(contentHash)
var ednMeta = client.getContent(url)
# decode the EDN content in to a StickerPack
result = edn_helpers.decode[StickerPack](ednMeta)
# EDN doesn't include a packId for each sticker, so add it here
result.stickers.apply(proc(sticker: var Sticker) =
sticker.packId = truncate(id, int))
result.id = truncate(id, int)
result.price = packData.price
except Exception as e:
raise newException(RpcException, "Error getting sticker pack data: " & e.msg)
finally:
client.close()
proc tokenOfOwnerByIndex*(address: Address, idx: Stuint[256]): int = proc tokenOfOwnerByIndex*(address: Address, idx: Stuint[256]): int =
let let