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contract api has breaking changes again - update to work with these
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bump stellar-sdk to 11.0.1 - stable release
bump stellarexplorer to 2.3.0 - soroban now in master
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Chris Hatch committed Dec 12, 2023
1 parent d26612a commit 64a1ee7
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Showing 3 changed files with 305 additions and 227 deletions.
281 changes: 141 additions & 140 deletions app/lib/stellar/contracts.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -9,176 +9,177 @@ const API_URL = 'https://steexp-api.fly.dev'
// const API_URL = `http://localhost:3001`

interface ContractProps {
id: string
wasmId: string
wasmIdLedger: string
wasmCode: string
wasmCodeLedger: string
id: string
wasmId: string
wasmIdLedger: string
wasmCode: string
wasmCodeLedger: string
}

interface StorageElement {
key: string
keyType: string
value: string
valueType: string
key: string
keyType: string
value: string
valueType: string
}

const convertStorage = (
storage: ReadonlyArray<xdr.ScMapEntry>,
storage: ReadonlyArray<xdr.ScMapEntry>,
): ReadonlyArray<StorageElement> =>
storage.map((el) => ({
key: scValToString(el.key()),
keyType: el.key().switch().name,
value: scValToString(el.val()),
valueType: el.val().switch().name,
}))
storage.map((el) => ({
key: scValToString(el.key()),
keyType: el.key().switch().name,
value: scValToString(el.val()),
valueType: el.val().switch().name,
}))

const getContractInfo = async (server: SorobanServer, contractId: string) => {
const ledgerKey = xdr.LedgerKey.contractData(
new xdr.LedgerKeyContractData({
contract: new Contract(contractId).address().toScAddress(),
key: xdr.ScVal.scvLedgerKeyContractInstance(),
durability: xdr.ContractDataDurability.persistent(),
}),
)

let ledgerEntries
try {
ledgerEntries = await server.getLedgerEntries(ledgerKey)
} catch (error) {
console.error(error)
}

if (
ledgerEntries == null ||
ledgerEntries.entries == null ||
ledgerEntries.entries.length == 0
) {
return null
}
const ledgerEntry = ledgerEntries.entries[0]
const codeData = xdr.LedgerEntryData.fromXDR(
ledgerEntry.xdr,
'base64',
).contractData()

const wasmIdLedger = ledgerEntry.lastModifiedLedgerSeq

const contractInstance = codeData.val().instance()
const wasmId = contractInstance.executable().wasmHash()

const contractStorage = contractInstance.storage()
const storage = contractStorage ? convertStorage(contractStorage) : []

return { wasmId, wasmIdLedger, storage }
const ledgerKey = xdr.LedgerKey.contractData(
new xdr.LedgerKeyContractData({
contract: new Contract(contractId).address().toScAddress(),
key: xdr.ScVal.scvLedgerKeyContractInstance(),
durability: xdr.ContractDataDurability.persistent(),
}),
)

let ledgerEntries
try {
ledgerEntries = await server.getLedgerEntries(ledgerKey)
} catch (error) {
console.error(error)
}

if (
ledgerEntries == null ||
ledgerEntries.entries == null ||
ledgerEntries.entries.length == 0
) {
return null
}
const ledgerEntry = ledgerEntries.entries[0]
const codeData = ledgerEntry.val.contractData()

const wasmIdLedger = ledgerEntry.lastModifiedLedgerSeq

const contractInstance = codeData.val().instance()
const wasmId = contractInstance.executable().wasmHash()

const contractStorage = contractInstance.storage()
const storage = contractStorage ? convertStorage(contractStorage) : []

return { wasmId, wasmIdLedger, storage }
}

const getContractCode = async (
server: SorobanServer,
wasmId: Buffer,
server: SorobanServer,
wasmId: Buffer,
): Promise<{ wasmCode: string; wasmCodeLedger: number } | null> => {
const ledgerKey = xdr.LedgerKey.contractCode(
new xdr.LedgerKeyContractCode({
hash: wasmId,
}),
)
const ledgerEntries = await server.getLedgerEntries(ledgerKey)
if (ledgerEntries == null || ledgerEntries.entries == null) {
return null
}
const ledgerEntry = ledgerEntries.entries[0]

const wasmCodeLedger = ledgerEntry.lastModifiedLedgerSeq as number

const codeEntry = xdr.LedgerEntryData.fromXDR(ledgerEntry.xdr, 'base64')
const wasmCode = codeEntry.contractCode().code().toString('hex')

return { wasmCode, wasmCodeLedger }
const ledgerKey = xdr.LedgerKey.contractCode(
new xdr.LedgerKeyContractCode({
hash: wasmId,
}),
)
const ledgerEntries = await server.getLedgerEntries(ledgerKey)
if (
ledgerEntries == null ||
ledgerEntries.entries == null ||
ledgerEntries.entries.length == 0
) {
return null
}
const ledgerEntry = ledgerEntries.entries[0]

const wasmCodeLedger = ledgerEntry.lastModifiedLedgerSeq as number

const codeEntry = ledgerEntry.val.contractCode()
const wasmCode = codeEntry.code().toString('hex')

return { wasmCode, wasmCodeLedger }
}

const loadContract = async (
server: SorobanServer,
contractId: string,
server: SorobanServer,
contractId: string,
): Promise<ContractProps | undefined> => {
let contractInstance
try {
contractInstance = new Contract(contractId)
} catch (error) {
console.error(error)
if (
error instanceof Error &&
error.message.includes('Invalid contract ID')
) {
throw new ContractIdInvalid(contractId)
let contractInstance
try {
contractInstance = new Contract(contractId)
} catch (error) {
console.error(error)
if (
error instanceof Error &&
error.message.includes('Invalid contract ID')
) {
throw new ContractIdInvalid(contractId)
}
throw error
}

const wasmIdResult = await getContractInfo(server, contractId)
if (wasmIdResult == null) {
console.error('Failed to get wasm id')
return
}

const { wasmId, wasmIdLedger } = wasmIdResult
// console.log(`wasmIdResult ${JSON.stringify(wasmIdResult, null, 2)}`)
if (!wasmId) {
console.warn('no wasmId not in result')
return
}

const codeResult = await getContractCode(server, wasmId)
if (!codeResult) {
console.error('Failed to get wasm code')
return
}
const { wasmCode, wasmCodeLedger } = codeResult

return {
id: contractInstance.contractId(),
wasmId: wasmId.toString('hex'),
wasmIdLedger: String(wasmIdLedger),
wasmCode,
wasmCodeLedger: String(wasmCodeLedger),
}
throw error
}

const wasmIdResult = await getContractInfo(server, contractId)
if (wasmIdResult == null) {
console.error('Failed to get wasm id')
return
}

const { wasmId, wasmIdLedger } = wasmIdResult
// console.log(`wasmIdResult ${JSON.stringify(wasmIdResult, null, 2)}`)
if (!wasmId) {
console.warn('no wasmId not in result')
return
}

const codeResult = await getContractCode(server, wasmId)
if (!codeResult) {
console.error('Failed to get wasm code')
return
}
const { wasmCode, wasmCodeLedger } = codeResult

return {
id: contractInstance.contractId(),
wasmId: wasmId.toString('hex'),
wasmIdLedger: String(wasmIdLedger),
wasmCode,
wasmCodeLedger: String(wasmCodeLedger),
}
}

const postWasmToWabtBackendRoute =
(path: string) =>
(wasmHexString: string): Promise<string> => {
const wasmBytes = hexStringToBytes(wasmHexString)
const blob = new Blob([new Uint8Array(wasmBytes)])
const formData = new FormData()
formData.append('contract', blob)
return fetch(`${API_URL}${path}`, {
method: 'POST',
body: formData,
}).then((response) => response.text())
}
(path: string) =>
(wasmHexString: string): Promise<string> => {
const wasmBytes = hexStringToBytes(wasmHexString)
const blob = new Blob([new Uint8Array(wasmBytes)])
const formData = new FormData()
formData.append('contract', blob)
return fetch(`${API_URL}${path}`, {
method: 'POST',
body: formData,
}).then((response) => response.text())
}

const getContractDecompiled = postWasmToWabtBackendRoute('/decompile')
const getContractWat = postWasmToWabtBackendRoute('/wat')

const getContractInterface = (
wasmHexString: string,
wasmHexString: string,
): Promise<Record<string, string>> => {
const wasmBytes = hexStringToBytes(wasmHexString)
const blob = new Blob([new Uint8Array(wasmBytes)])
const formData = new FormData()
formData.append('contract', blob)
return fetch(`${API_URL}/interface`, {
method: 'POST',
body: formData,
}).then((response) => response.json())
const wasmBytes = hexStringToBytes(wasmHexString)
const blob = new Blob([new Uint8Array(wasmBytes)])
const formData = new FormData()
formData.append('contract', blob)
return fetch(`${API_URL}/interface`, {
method: 'POST',
body: formData,
}).then((response) => response.json())
}

export type { ContractProps, StorageElement }

export {
getContractCode,
getContractInfo,
getContractDecompiled,
getContractInterface,
getContractWat,
loadContract,
getContractCode,
getContractInfo,
getContractDecompiled,
getContractInterface,
getContractWat,
loadContract,
}
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