Sawubona wonke umntu!
В inxenye sijonge ngokweenkcukacha indlela yokuyila nokusebenza nge-dApp (isicelo esinatyisiweyo) kwi .
Makhe siyivavanye ngoku le iqhathiweyo .
Inqanaba 3. Ukuvavanya i-akhawunti ye-dApp
Zeziphi iingxaki eziphuma kuwe ngokukhawuleza noAlice? I-dApp Iakhawunti?
Okokuqala:
UBoob noCooper banokuthumela imali ngempazamo kwidilesi yedApp besebenzisa rhoqo tshintshelo intengiselwano kwaye ke abayi kukwazi ukufikelela kubo emva.Okwesibini:
Asimthinteli uAlice nangayiphi na indlela ekutsaleni imali ngaphandle kwemvume kaBoob kunye/okanye neCooper. Kuba, nikela ingqalelo ekuqinisekiseni, zonke iintengiselwano ezivela ku-Alice ziya kwenziwa.
Masilungise eye-2 ngokuvala u-Alice tshintshelo iintengiselwano. Masisebenzise iskripthi esilungisiweyo:

Sizama ukurhoxisa iingqekembe kwi-dApp Alice kunye nokutyikitya kwakhe. Sifumana impazamo:
Masizame ukurhoxa ngokurhoxa:
broadcast(invokeScript({dappAddress: address(env.accounts[1]), call:{function:"withdraw",args:[{type:"integer", value: 1000000}]}, payment: []}))Isikripthi siyasebenza kwaye sifumene inqaku le-2!
Inqanaba 4. Yenza i-DAO ngokuvota
Ngelishwa, ulwimi lwe-RIDE alukaboneleli ngokukwazi ukusebenza kunye neengqokelela (izichazi-magama zesichazi-magama, ii-iterators, izinciphisi, njl.). Nangona kunjalo, kuyo nayiphi na imisebenzi eneengqokelela ezisicaba isitshixo-ixabiso singakwazi ukuyila inkqubo yokusebenza ngeentambo, ngokuhambelana nezitshixo kunye nokuchithwa kwazo.
Iintambo zilula kakhulu ukudibanisa;
Masiqokelele kwaye sicazulule umtya njengomzekelo wovavanyo kwaye sijonge ukuba oku kusichaphazela njani isiphumo sentengiselwano.
Siye sazinza kwinto yokuba u-Alice akakwazanga ukusayina itransekshini yokuGqithisela, kuba obu buchule bebuvaliwe ku-@verifier kolu hlobo lwentengiselwano.
Masizilolonge ngeentambo kwaye emva koko sisombulule oku.
RIYA Iintambo
Ukuthengiselana kunokwenzeka kwakhona, siyazi indlela yokusebenza ngeentambo.

Lilonke, sinayo yonke into efunekayo ukuze sibhale i-logic entsonkothileyo I-DAO dApp.
IiNtengiselwano zeDatha
IiNtengiselwano zeDatha:
"Obona bukhulu beqhosha bunobumba be-100, kwaye isitshixo sinokuqulatha amanqaku ekhowudi ye-Unicode ebandakanya izithuba kunye nezinye iisimboli ezingaprintwayo. Amaxabiso omtya anomda we-32,768 bytes kunye nenani eliphezulu lokungeniswa okunokwenzeka kwintengiselwano yedatha yi-100. Lilonke, ubungakanani obukhulu bedatha yedatha bujikeleze i-140kb - ireferensi, phantse kanye ubude bomdlalo kaShakespeare 'Romeo noJuliet. '.
Senza i-DAO ngezi meko zilandelayo:
Ukuze uqalise ukufumana inkxaso-mali ngokufowuna getFunds() inkxaso ubuncinane 2 abathathi-nxaxheba - abatyali-mali DAO - iyafuneka. Shenxisa iyakwenzeka kanye njengokuba iyonke ibonakalisiwe ukuvota abanini DAO.
Masenze iintlobo ezi-3 zezitshixo kwaye songeze ingqiqo yokusebenza ngeebhalansi kwivoti yemisebenzi emi-2 kunye ne-GetFunds:
xx…xx_iya = abatyali-mali, ibhalansi ekhoyo (vote, idiphozithi, ukurhoxiswa)
xx…xx_sv = ukuqala, inani leevoti (vote, getFunds)
xx…xx_sf = ukuqala, inani leevoti (vote, getFunds)
xx…xx = idilesi kawonke-wonke (amagama angama-35)
Nceda uqaphele ukuba kwiVoti kufuneka sihlaziye iindawo ezininzi ngexesha elinye:
WriteSet([DataEntry(key1, value1), DataEntry(key2, value2)]),I-WritSet ivumela ukuba senze iirekhodi ezininzi ngexesha elinye invokeScript iintengiselwano.
Yile nto ibonakala ngathi kwi-key-value yogcino lwe-DAO dApp, emva kokuba uBob kunye noCooper bazalise ia-idiphozithi:
Umsebenzi wethu wediphozithi utshintshile kancinci:
Ngoku kuza elona xesha libalulekileyo kwimisebenzi ye-DAO - ukuvota ukuze iiprojekthi zixhaswe ngemali.
UBob uvotela iprojekthi kaNeli eyi-500000 yamaza amaza:
broadcast(invokeScript({dappAddress: address(env.accounts[1]), call:{function:"vote",args:[{type:"integer", value: 500000}, {type:"string", value: "3MrXEKJr9nDLNyVZ1d12Mq4jjeUYwxNjMsH"}]}, payment: []}))
Kwivenkile yedatha sibona zonke izinto eziyimfuneko kwidilesi kaNeli:
UCooper naye wavotela iprojekthi yeNeli.
Makhe sijonge ikhowudi yomsebenzi getFunds. UNeli kufuneka aqokelele ubuncinane iivoti ezi-2 ukuze akwazi ukutsala imali kwi-DAO.
UNeli uza kutsala isiqingatha semali ayiphathisiweyo:
broadcast(invokeScript({dappAddress: address(env.accounts[1]), call:{function:"getFunds",args:[{type:"integer", value: 500000}]}, payment: []}))
Uyaphumelela, oko kukuthi, iDAO iyasebenza!
Sijonge inkqubo yokwenza iDAO ngolwimi I-RIDE4DAPPS.
Kula macandelo alandelayo siza kuqwalasela ngakumbi ikhowudi yokuhlaziya kunye novavanyo lwamatyala.
Inguqulelo epheleleyo yekhowudi kwi
# In this example multiple accounts can deposit their funds to DAO and safely take them back, no one can interfere with this.
# DAO participants can also vote for particular addresses and let them withdraw invested funds then quorum has reached.
# An inner state is maintained as mapping `address=>waves`.
# https://medium.com/waves-lab/waves-announces-funding-for-ride-for-dapps-developers-f724095fdbe1
# You can try this contract by following commands in the IDE (ide.wavesplatform.com)
# Run commands as listed below
# From account #0:
# deploy()
# From account #1: deposit funds
# broadcast(invokeScript({dappAddress: address(env.accounts[1]), call:{function:"deposit",args:[]}, payment: [{amount: 100000000, asset:null }]}))
# From account #2: deposit funds
# broadcast(invokeScript({dappAddress: address(env.accounts[1]), call:{function:"deposit",args:[]}, payment: [{amount: 100000000, asset:null }]}))
# From account #1: vote for startup
# broadcast(invokeScript({dappAddress: address(env.accounts[1]), call:{function:"vote",args:[{type:"integer", value: 500000}, {type:"string", value: "3MrXEKJr9nDLNyVZ1d12Mq4jjeUYwxNjMsH"}]}, payment: []}))
# From account #2: vote for startup
# broadcast(invokeScript({dappAddress: address(env.accounts[1]), call:{function:"vote",args:[{type:"integer", value: 500000}, {type:"string", value: "3MrXEKJr9nDLNyVZ1d12Mq4jjeUYwxNjMsH"}]}, payment: []}))
# From account #3: get invested funds
# broadcast(invokeScript({dappAddress: address(env.accounts[1]), call:{function:"getFunds",args:[{type:"integer", value: 500000}]}, payment: []}))
{-# STDLIB_VERSION 3 #-}
{-# CONTENT_TYPE DAPP #-}
{-# SCRIPT_TYPE ACCOUNT #-}
@Callable(i)
func deposit() = {
let pmt = extract(i.payment)
if (isDefined(pmt.assetId)) then throw("can hodl waves only at the moment")
else {
let currentKey = toBase58String(i.caller.bytes)
let xxxInvestorBalance = currentKey + "_" + "ib"
let currentAmount = match getInteger(this, xxxInvestorBalance) {
case a:Int => a
case _ => 0
}
let newAmount = currentAmount + pmt.amount
WriteSet([DataEntry(xxxInvestorBalance, newAmount)])
}
}
@Callable(i)
func withdraw(amount: Int) = {
let currentKey = toBase58String(i.caller.bytes)
let xxxInvestorBalance = currentKey + "_" + "ib"
let currentAmount = match getInteger(this, xxxInvestorBalance) {
case a:Int => a
case _ => 0
}
let newAmount = currentAmount - amount
if (amount < 0)
then throw("Can't withdraw negative amount")
else if (newAmount < 0)
then throw("Not enough balance")
else ScriptResult(
WriteSet([DataEntry(xxxInvestorBalance, newAmount)]),
TransferSet([ScriptTransfer(i.caller, amount, unit)])
)
}
@Callable(i)
func getFunds(amount: Int) = {
let quorum = 2
let currentKey = toBase58String(i.caller.bytes)
let xxxStartupFund = currentKey + "_" + "sf"
let xxxStartupVotes = currentKey + "_" + "sv"
let currentAmount = match getInteger(this, xxxStartupFund) {
case a:Int => a
case _ => 0
}
let totalVotes = match getInteger(this, xxxStartupVotes) {
case a:Int => a
case _ => 0
}
let newAmount = currentAmount - amount
if (amount < 0)
then throw("Can't withdraw negative amount")
else if (newAmount < 0)
then throw("Not enough balance")
else if (totalVotes < quorum)
then throw("Not enough votes. At least 2 votes required!")
else ScriptResult(
WriteSet([
DataEntry(xxxStartupFund, newAmount)
]),
TransferSet([ScriptTransfer(i.caller, amount, unit)])
)
}
@Callable(i)
func vote(amount: Int, address: String) = {
let currentKey = toBase58String(i.caller.bytes)
let xxxInvestorBalance = currentKey + "_" + "ib"
let xxxStartupFund = address + "_" + "sf"
let xxxStartupVotes = address + "_" + "sv"
let currentAmount = match getInteger(this, xxxInvestorBalance) {
case a:Int => a
case _ => 0
}
let currentVotes = match getInteger(this, xxxStartupVotes) {
case a:Int => a
case _ => 0
}
let currentFund = match getInteger(this, xxxStartupFund) {
case a:Int => a
case _ => 0
}
if (amount <= 0)
then throw("Can't withdraw negative amount")
else if (amount > currentAmount)
then throw("Not enough balance")
else ScriptResult(
WriteSet([
DataEntry(xxxInvestorBalance, currentAmount - amount),
DataEntry(xxxStartupVotes, currentVotes + 1),
DataEntry(xxxStartupFund, currentFund + amount)
]),
TransferSet([ScriptTransfer(i.caller, amount, unit)])
)
}
@Verifier(tx)
func verify() = {
match tx {
case t: TransferTransaction =>false
case _ => true
}
}
umthombo: www.habr.com
