The avatar for @jimpick
Jim Pick
Freelance Filecoin developer in Victoria, Canada
Public
Filecoin Virtual Machine
Edited
Oct 26, 2022
Fork of FVM Actor Code Playground - "Hello World"
•
2 forks
1 star
Filecoin Virtual Machine
FVM Actor Code Playground - "Hello World"FVM Actor Code Playground - SimpleCoin EVM ContractFVM Actor Code Playground - ERC20 Sans EventsFVM Actor Code Playground - ERC20 Sans Events - Hyperspace TestnetFVM Actor Code Playground - ERC20 Sans Events - Wallaby Testnet
FVM Actor Code Playground - "Simple Faucet"
FVM Actor Code Playground - "List Miners" InvestigationFVM Actor Code Playground - "Bounties for Deals"
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drainRaceStatus = {
const faucetAddress = createActorStatus.waitResponse.ReturnDec.IDAddress
if (drainRaceButton) {
const start = Date.now()
console.log('Drain race started')
yield {
invoking: true,
start
}
const balances = await getBalances([faucetAddress])
const faucetBalance = new FilecoinNumber(balances[0].balance, 'attofil')
console.log('Faucet balance:', faucetBalance.toFil())
yield {
invoking: true,
initialFaucetBalance: faucetBalance.toFil(),
start
}
const responsePromises = []
for (const key of keys) {
const message = {
To: faucetAddress,
From: key.address,
Nonce: 0,
Value: new FilecoinNumber(0, 'attofil'),
GasLimit: 1000000000,
GasFeeCap: new FilecoinNumber(0, 'attofil'),
GasPremium: new FilecoinNumber(0, 'attofil'),
Method: 2,
Params: cbor.encode([bigToBytes(faucetBalance)]).toString('base64')
}
const privateKey = key.privateKey
console.log('message', message)
responsePromises.push(filecoin_client.tx.sendMessage(
message,
privateKey,
true, // updateMsgNonce
false // waitMsg
))
}
const responses = await Promise.all(responsePromises)
const waitStart = Date.now()
yield {
waiting: true,
start,
waitStart,
initialFaucetBalance: faucetBalance.toFil(),
responses
}
const promises = []
for (const response of responses) {
promises.push(client.stateWaitMsg(response, 0))
}
const waitResponses = await Promise.all(promises)
const decodedResults = []
for (const waitResponse of waitResponses) {
let decodedResult = null
if (waitResponse.Receipt && waitResponse.Receipt.Return) {
decodedResult = cbor.decodeAll(waitResponse.Receipt.Return, 'base64')
}
decodedResults.push(decodedResult)
}
yield { invoked: true, responses, waitResponses, decodedResults }
}
}
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new FilecoinNumber('5', 'attofil')
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cbor.encode([new FilecoinNumber('5', 'attofil')]).toString('base64')
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function bigToBytes(num) {
// https://github.com/Zondax/filecoin-signing-tools/blob/5a126fa599695dac720c692cb286a8c572187f88/signer-npm/js/src/index.js#L54
// https://github.com/spacegap/spacegap.github.io/blob/ccfa30a3e5303c4538c59f3a23186882eddf810e/src/services/filecoin/index.js#L145

if (num === '0' || num === 0) {
return new Uint8Array(0)
}
const numBigInt = (typeof num === 'object') ? (new BN(num.toAttoFil(), 10)) : (new BN(num, 10))
const numArray = numBigInt.toArrayLike(Array, 'be', numBigInt.byteLength())
if (numBigInt.isNeg()) {
numArray.unshift(1)
} else {
numArray.unshift(0)
}
return new Uint8Array(numArray)
}
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bigToBytes(-1234)
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bigToBytes(1234)
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bigToBytes(new FilecoinNumber(1234, 'attofil'))
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({ x: 1 }).toString()
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bigToBytes("1234")
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bigToBytes("12345678901234567890")
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bigToBytes(12345678901234567890n)
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function bytesToBig (p) { // https://github.com/spacegap/spacegap.github.io/blob/ccfa30a3e5303c4538c59f3a23186882eddf810e/src/services/filecoin/index.js#L145
let sign = p[0]
let acc = new BN(0)
for (let i = 1; i < p.length; i++) {
acc = acc.mul(new BN(256))
acc = acc.add(new BN(p[i]))
}
if (sign === 1) {
return -acc
} else if (sign === 0) {
return acc
} else {
throw new Error('Unexpected value for first byte, expected 0 or 1 for sign')
}
}
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bytesToBig(bigToBytes(12345678901234567890n)).toString()
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bytesToBig(bigToBytes(-1234)).toString()
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skypack = (library) => import(`https://cdn.skypack.dev/${library}?min`)
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LotusRPC = (await import('@filecoin-shipyard/lotus-client-rpc')).LotusRPC
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BrowserProvider = (await import('@filecoin-shipyard/lotus-client-provider-browser')).BrowserProvider
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schema = (await import('@filecoin-shipyard/lotus-client-schema')).mainnet.fullNode
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stripAnsi = (await import('https://unpkg.com/strip-ansi@7.0.1/index.js?module')).default
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cbor = import('https://cdn.skypack.dev/borc')
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CID = (await import('https://jspm.dev/cids')).default
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import {button} from '@jimpick/download-data-button-with-wasm-support'
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filecoinJsSigner = import('https://jspm.dev/@blitslabs/filecoin-js-signer')
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FilecoinClient = filecoinJsSigner.FilecoinClient
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FilecoinSigner = filecoinJsSigner.FilecoinSigner
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filecoinNumber = import('https://cdn.skypack.dev/@glif/filecoin-number')
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FilecoinNumber = filecoinNumber.FilecoinNumber
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BN = require('https://bundle.run/bn.js@5.2.0')
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initialCode = (await fetch(initialCodeUrl)).text()
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method2Code = `
#[derive(Debug, Deserialize_tuple)]
pub struct WithdrawalParams {
#[serde(with = "bigint_ser")]
pub amount: TokenAmount,
}

/// Method num 2.
pub fn withdraw(params: u32) -> Option<RawBytes> {
let params = sdk::message::params_raw(params).unwrap().1;
let params = RawBytes::new(params);
let params: WithdrawalParams = params.deserialize().unwrap();
let caller = sdk::message::caller();
let address = Address::new_id(caller);
let send_params = RawBytes::default();

let _receipt = fvm_sdk::send::send(
&address,
METHOD_SEND,
send_params,
params.amount.clone()
).unwrap();
let ret = to_vec(format!("Withdraw {:?} => t0{}",
params, caller).as_str());

match ret {
Ok(ret) => Some(RawBytes::new(ret)),
Err(err) => {
abort!(
USR_ILLEGAL_STATE,
"failed to serialize return value: {:?}",
err
);
}
}
}
`.trim()
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templateStart = {
const code = initialCode
.replace('pub fn invoke(_: u32)', 'pub fn invoke(params: u32)')
.replace('say_hello()', 'withdraw(params)')
.replace(/\/\/\/ Method num 2.*/s, '')
.split('\n')

code.splice(
10, 0,
'use fvm_shared::bigint::bigint_ser;',
'use fvm_shared::econ::TokenAmount;',
'use fvm_shared::METHOD_SEND;',
'use fvm_shared::address::Address;',
)
return code.join('\n')
}
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initialCargoToml = (await fetch(initialCargoTomlUrl)).text()
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patchedCargoToml = {
function gitVersion (version) {
const rev = '297a7694'
return `{ version = "${version}", git = "https://github.com/filecoin-project/ref-fvm", rev = "${rev}" }`
}
return (
initialCargoToml
.replace(/fvm_sdk = .*/, `fvm_sdk = ${gitVersion('0.6.1')}`)
.replace(/fvm_shared = .*/, `fvm_shared = ${gitVersion('0.6.1')}`)
.replace(/fvm_ipld_blockstore = .*/, `fvm_ipld_blockstore = ${gitVersion('0.1.0')}`)
.replace(/fvm_ipld_encoding = .*/, `fvm_ipld_encoding = ${gitVersion('0.2.0')}`)
)
}
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client = {
const provider = new BrowserProvider(`${baseUrl}/rpc/v0`, { token })
return new LotusRPC(provider, { schema })
}
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filecoin_client = new FilecoinClient(`${baseUrl}/rpc/v0`, token)
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async function *heightStream () {
let last
while (true) {
try {
const newHeight = (await client.chainHead()).Height
if (newHeight !== last) {
yield newHeight
last = newHeight
}
} catch (e) {
yield 0
}
await Promises.delay(4000)
}
}
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mutable ready = false
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async function *heightReadyTapStream () {
let lastReady = false
for await (const height of heightStream()) {
const newReady = height > 7
if (newReady !== lastReady) {
mutable ready = newReady
lastReady = newReady
}
yield height
}
}
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currentHeight = heightReadyTapStream()
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walletDefaultAddress = ready && client.walletDefaultAddress()
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