ara-contracts

Blockchain interactions in Ara modules.
Overview
This repository contains all contracts deployed by Ara. There are five global contracts used throughout the entire network:
AraToken.sol
- The Ara ERC20 token contract
AFS.sol
- The AFS
standard contract defines the API for interacting with AFS
s on the blockchain (see the accompanying RFC). The current AFS Standard
version is 4
. Future Standards are not necessarily sequential or superseding in nature and may exist in parallel (e.g., another AFS Standard
may be named ecommerce
which can be used for an entirely different class of AFS
s). In order to estimate costs for interacting with the Standard without needing to deploy a proxy beforehand, we additionally deploy a version of all AFS Standard
s without modifiers
which are named ${version name}_estimate
. The current AFS Estimate Standard
version is 4_estimate
.
Library.sol
- The contract where content ownership across the network is consolidated and tracked
Registry.sol
- The contract where AFS
proxies and AFS
standards are created, linked, and tracked
AraRegistry.sol
- The contract used to deploy the Library, Registry, and AraToken contracts
This repository also provides programmatic (see the API section) and command-line interfaces (see the Usage section) for interacting with the contracts.
AFS Proxies
In addition to these global contracts, Ara deploys a proxy contract for each individual AFS
that gets committed to the blockchain (see ara-filesystem
and proxy architecture). This contract serves as the storage layer for AFS
s on the blockchain, while the AFS Standard
serves as the API (business logic layer) for interacting with AFS
s on the blockchain.
Stability
Stability: 2 - Stable.
Compatibility with the npm ecosystem is a high priority.
Although the API is stable, this project is still in alpha development and is not yet ready to be used in a production environment.
Dependencies
Installation
$ npm install arablocks/ara-contracts --save
Usage
See CLI Usage docs here.
Ara Privatenet
The contracts in this repository are currently deployed on Ara Privatenet and Ethereum Ropsten Testnet. You must be connected to one of these networks in order to be on the same network as the rest of the Ara team during development and to use the addresses in constants.js
. You may run a local Ganache instance for local development.
API
Any value inputted into token functions must be strings to avoid precision error
All transaction callbacks (onhash
, onreceipt
, onconfirmation
, onerror
, and onmined
) are optional. For more information, see ara-util
.
Purchase
Registry
Library
Rewards
Token
Ownership
async purchase(opts)
Purchases an AFS
and adds it to the requester's library.
opts
requesterDid
- The DID
of the person making the purchasecontentDid
- The DID
of the content being purchasedpassword
- The requester's passwordbudget
- The budget in Ara to allocate for the initial download jobgasPrice
- Optional gas price in GWeiapprove
- Optional boolean indicating whether to send the Approve transaction prior to the Purchase transactionkeyringOpts
- Optional keyring optionsapproveCallbacks
- Optional callbacks for the Approve transaction
onhash
onreceipt
onconfirmation
onerror
onmined
purchaseCallbacks
- Optional callbacks for the Purchase transaction
onhash
onreceipt
onconfirmation
onerror
onmined
Returns object
:
receipt
- Transaction receiptjobId
- The job ID generated for the initial download
const requesterDid = 'did:ara:a51aa651c5a28a7c0a8de007843a00dcd24f3cc893522d3fb093c2bb7a323785'
const contentDid = 'did:ara:114045f3883a21735188bb02de024a4e1451cb96c5dcc80bdfa1b801ecf81b85'
const budget = 100
const { receipt, jobId } = await purchase({
requesterDid,
contentDid,
password,
budget
})
async registry.proxyExists(contentDid)
Checks if the proxy for a content DID
exists.
contentDid
- The DID
of the content to check
Returns a boolean
indicating whether a proxy contract exists for a contentDid
.
const exists = await registry.proxyExists(contentDid)
async registry.getProxyAddress(contentDid)
Gets the address of a proxy given a content DID
contentDid
- The DID
of the content
const address = await registry.getProxyAddress(contentDid)
async registry.upgradeProxy(opts)
Upgrades a proxy to another AFS
standard.
opts
contentDid
- The DID
of the contentpassword
- The password of the owner of the proxyafsPassword
- The password of the AFSversion
- The AFS
standard version to upgrade togasPrice
- Optional gas price in GWeikeyringOpts
- Optional keyring optionsonhash
onreceipt
onconfirmation
onerror
onmined
Returns a boolean
indicating whether the proxy was successfully upgraded.
const upgraded = await registry.upgradeProxy({ contentDid, password, afsPassword, version: '1' })
async registry.deployProxy(opts)
Deploys a proxy to an AFS
standard.
opts
contentDid
- The DID
of the content to deploy a proxy forpassword
- The password of the owner of the AFS
afsPassword
- The password of the AFSversion
- The version to use with this proxyestimate
- Optional flag to check cost of deployProxy
ownerDid
- Optional owner DID
used in conjunction with estimate
to bypass needing a real AFSgasPrice
- Optional gas price in GWeikeyringOpts
- Optional keyring optionsonhash
onreceipt
onconfirmation
onerror
onmined
Returns the address at which the proxy was deployed.
const address = await registry.deployProxy({ contentDid, password, afsPassword, version: '1' })
async registry.getProxyVersion(contentDid)
Gets the AFS
Standard version a proxy is using.
contentDid
- The DID
of the content
const version = await registry.getProxyVersion(contentDid)
async registry.getLatestStandard()
Gets the latest AFS
contract standard.
const address = await registry.getLatestStandard()
async registry.getStandard(version)
Gets the address of an AFS
contract standard.
version
- The version of the AFS
contract standard
const address = await registry.getStandard('1')
async registry.deployNewStandard(opts)
Compiles and deploys a new AFS
standard.
opts
requesterDid
- The DID
of the person deploying the standardpassword
- The password of the person deploying the standardversion
- The version of the standardpaths
- The solidity dependencies of the standardgasPrice
- Optional gas price in GWeikeyringOpts
- Optional keyring optionsonhash
onreceipt
onconfirmation
onerror
onmined
Returns the address at which the standard was deployed.
const version = '1'
const paths = ['./contracts/ignored_contracts/AFS.sol',
'./contracts/ignored_contracts/Library.sol',
'./contracts/ignored_contracts/Registry.sol',
'./contracts/AraProxy.sol',
'./contracts/ignored_contracts/AraToken.sol']
const address = await registry.deployNewStandard({
requesterDid,
password,
version,
paths
})
async library.getLibrary(requesterDid)
Gets the content DID
s purchased by the requesterDID
.
requesterDid
- The DID
of the owner of the library
const lib = await library.getLibrary(did)
async library.getLibrarySize(requesterDid)
Gets the size of requesterDid
's library.
requesterDid
- The DID
of the owner of the library
const size = await library.getLibrarySize(did)
async library.getLibraryItem(opts)
Gets the DID
of the item at the provided index
in requesterDid
's library.
opts
requesterDid
- The DID
of the owner of the libraryindex
- The index of the content to retrieve
const contentDid = await library.getLibraryItem({ requesterDid, index: 1 })
async library.hasPurchased(opts)
opts
contentDid
- DID
of the content to check the purchase ofpurchaserDid
- DID
of purchaserkeyringOpts
- optional Keyring options
const purchased = await library.hasPurchased({
contentDid: 'did:ara:114045f3883a21735188bb02de024a4e1451cb96c5dcc80bdfa1b801ecf81b85',
purchaserDid: 'did:ara:a51aa651c5a28a7c0a8de007843a00dcd24f3cc893522d3fb093c2bb7a323785'
})
async rewards.submit(opts)
Submits new DCDN job.
opts
requesterDid
- The DID
of the person submitting the jobcontentDid
- The DID
of the content this job is forpassword
- The password of the person submitting the jobjob
jobId
- The jobId
of the job being submittedbudget
- The budget to allocate for the job
gasPrice
- Optional gas price in GWeikeyringOpts
- Optional keyring optionsonhash
onreceipt
onconfirmation
onerror
onmined
Returns transaction receipt
object.
const jobId = '0x7dc039cfb220029c371d0f4aabf4a956ed0062d66c447df7b4595d7e11187271'
const budget = 10
const receipt = await rewards.submit({
requesterDid,
contentDid,
password,
job: {
jobId,
budget
}
})
async rewards.allocate(opts)
Allocates rewards
amongst farmers
for jobId
.
opts
requesterDid
- The DID
of the person who submitted the jobcontentDid
- The DID
of the content the job is forpassword
- The password of the person who submitted the jobjob
jobId
- The jobId
of the job to allocate forfarmers
- The Ethereum addresses of the farmers to rewardrewards
- The reward amounts in Ara tokens to split amongst farmers
, respectively
gasPrice
- Optional gas price in GWeikeyringOpts
- Optional keyring optionsonhash
onreceipt
onconfirmation
onerror
onmined
const jobId = '0x7dc039cfb220029c371d0f4aabf4a956ed0062d66c447df7b4595d7e11187271'
const farmers = ['0xF9403C6DA32DB4860F1eCB1c02B9A04D37c0e36e',
'0x70693d8f4e1c9bA1AE0870C35128BaDfDcF28FBc',
'0x19d6a7D8bB09e8A6d733a9c8D9fe7b964fD8F45e',
'0x629483C72b5191C1b522E887238a0A522b1D4F74']
const distribution = [10, 20, 30, 40]
await rewards.allocate({
requesterDid,
contentDid,
password,
job: {
jobId,
farmers,
rewards: distribution
}
})
async rewards.redeem(opts)
Redeem Ara tokens (resulting from allocation return or from rewards) from AFS
contract.
opts
farmerDid
- The DID
of the person redeeming tokenscontentDid
- The DID
of the content to redeem frompassword
- The password of the person redeeming tokensgasPrice
- Optional gas price in GWeikeyringOpts
- Optional keyring optionsonhash
onreceipt
onconfirmation
onerror
onmined
Returns the number of Ara tokens redeemed.
const balance = await rewards.redeem({
farmerDid,
contentDid,
password
})
async rewards.getBudget(opts)
Gets the budget for jobId
.
opts
contentDid
- The DID
of the content that has jobId
jobId
- The jobId
of the job to get the budget for
const budget = await rewards.getBudget({
contentDid,
jobId
})
async rewards.getJobOwner(opts)
Gets the address of the owner of a jobId
.
opts
contentDid
- The DID
of the content that has jobId
jobId
- The jobId
of the job to get the owner for
const owner = await rewards.getJobOwner({
contentDid,
jobId
})
async rewards.getRewardsBalance(opts)
Gets the balance (resulting from allocation return or from rewards) of farmerDid
stored in contentDid
.
opts
farmerDid
- The DID
of the person to check the balance ofcontentDid
- The DID
of the content where the balance is storedpassword
- The password of the person to check the balance ofkeyringOpts
- optional Keyring options
const balance = await rewards.getRewardsBalance({
farmerDid,
contentDid,
password
})
async token.balanceOf(did, keyringOpts)
Queries for the balance in Ara of an identity.
did
- The DID
of the account to get the balance forkeyringOpts
- optional Keyring options
const did = 'did:ara:a51aa651c5a28a7c0a8de007843a00dcd24f3cc893522d3fb093c2bb7a323785'
const balance = await token.balanceOf(did)
async token.totalSupply()
Gets the total circulating supply of Ara tokens.
const supply = await token.totalSupply()
async token.allowance(opts)
Gets the amount in Ara that a spender
is allowed to spend of an owner
.
owner
- DID
of the owner of the Ara tokens to be spentspender
- DID
of the account that will be spending owner
's tokens
const owner = 'did:ara:a51aa651c5a28a7c0a8de007843a00dcd24f3cc893522d3fb093c2bb7a323785'
const spender = 'did:ara:114045f3883a21735188bb02de024a4e1451cb96c5dcc80bdfa1b801ecf81b85'
const allowance = await token.allowance({ owner, spender })
async token.transfer(opts)
Transfers Ara from one account to another.
opts
did
- DID
of the account that is sending the Arapassword
- Password of the account sending Arato
- DID
of the account to receive the tokensval
- Amount to transfergasPrice
- Optional gas price in GWeikeyringOpts
- Optional keyring optionsonhash
onreceipt
onconfirmation
onerror
onmined
Returns transaction receipt
object.
const did = 'did:ara:a51aa651c5a28a7c0a8de007843a00dcd24f3cc893522d3fb093c2bb7a323785'
const password = 'password'
const recipient = 'did:ara:114045f3883a21735188bb02de024a4e1451cb96c5dcc80bdfa1b801ecf81b85'
const receipt = await token.transfer({
did,
password,
to: recipient,
val: '500'
})
async token.approve(opts)
Sets the approved token amount to be spent on an owner's behalf. This will overwrite any previous approvals.
opts
did
- DID
of the account that owns the Arapassword
- Password of the owning accountspender
- DID
of the account that will be spending the tokensval
- Amount to approvegasPrice
- Optional gas price in GWeikeyringOpts
- Optional keyring optionsonhash
onreceipt
onconfirmation
onerror
onmined
Returns transaction receipt
object.
const did = 'did:ara:a51aa651c5a28a7c0a8de007843a00dcd24f3cc893522d3fb093c2bb7a323785'
const password = 'password'
const recipient = 'did:ara:114045f3883a21735188bb02de024a4e1451cb96c5dcc80bdfa1b801ecf81b85'
const receipt = await token.approve({
did,
password,
spender,
val: '500'
})
async token.transferFrom(opts)
Transfers Ara from one address to another. This differs from transfer
by requiring the tokens to be first approved to be spent.
opts
from
- The DID
of the origin account of the Ara tokens to transfer (this account must approve did
to perform the transfer beforehand)to
- DID
of the account that will be receiving the tokensval
- Amount of Ara to transferdid
- DID
of the account initiating the transfer on behalf of from
password
- Password of the account initiating the transfergasPrice
- Optional gas price in GWeikeyringOpts
- Optional keyring optionsonhash
onreceipt
onconfirmation
onerror
onmined
Returns transaction receipt
object.
const origin = 'did:ara:08228219008e3c7ab8b7f23a161c196be44ff33525ebea01d841b707b34b7adc'
const recipient = 'did:ara:114045f3883a21735188bb02de024a4e1451cb96c5dcc80bdfa1b801ecf81b85'
const did = 'did:ara:a51aa651c5a28a7c0a8de007843a00dcd24f3cc893522d3fb093c2bb7a323785'
const password = 'password'
const receipt = await token.transferFrom({
from: origin,
to: recipient,
val: '500',
did,
password,
})
async token.increaseApproval(opts)
Increases the approved amount that a spender
can spend on behalf of an owner
. This will not overwrite any existing approved amount, just increase it.
opts
spender
- DID
of the spenderdid
- DID
of the account that owns the Arapassword
- Password of the owning accountval
- Amount to increase the approval bygasPrice
- Optional gas price in GWeikeyringOpts
- Optional keyring optionsonhash
onreceipt
onconfirmation
onerror
onmined
Returns transaction receipt
object.
const spender = 'did:ara:114045f3883a21735188bb02de024a4e1451cb96c5dcc80bdfa1b801ecf81b85'
const did = 'did:ara:a51aa651c5a28a7c0a8de007843a00dcd24f3cc893522d3fb093c2bb7a323785'
const password = 'password'
const receipt = await token.increaseApproval({
spender,
did,
password,
val: '10'
})
async token.decreaseApproval(opts)
Decreases the approved amount that a spender
can spend on behalf of an owner
. This will not overwrite any existing approved amount, just decrease it.
opts
spender
- DID
of the spenderdid
- DID
of the account that owns the Arapassword
- Password of the owning accountval
- Amount to decrease the approval bygasPrice
- Optional gas price in GWeikeyringOpts
- Optional keyring optionsonhash
onreceipt
onconfirmation
onerror
onmined
Returns transaction receipt
object.
const did = 'did:ara:a51aa651c5a28a7c0a8de007843a00dcd24f3cc893522d3fb093c2bb7a323785'
const password = 'password'
const spender = 'did:ara:114045f3883a21735188bb02de024a4e1451cb96c5dcc80bdfa1b801ecf81b85'
const receipt = await token.decreaseApproval({
spender,
did,
password,
val: '10'
})
async token.modifyDeposit(opts)
Modifies the current amount deposited for rewards for a particular account.
opts
did
- DID
of the account to update the deposit forpassword
- password of the accountval
- value as string
to deposit/withdrawwithdraw
- boolean
whether this should be a deposit or withdraw (defaults to false
if not given)gasPrice
- Optional gas price in GWeikeyringOpts
- Optional keyring optionsonhash
onreceipt
onconfirmation
onerror
onmined
Returns transaction receipt
object.
const did = 'did:ara:a51aa651c5a28a7c0a8de007843a00dcd24f3cc893522d3fb093c2bb7a323785'
const password = 'password'
const receipt = await token.modifyDeposit({
did,
password,
val: '50'
})
const did = 'did:ara:a51aa651c5a28a7c0a8de007843a00dcd24f3cc893522d3fb093c2bb7a323785'
const password = 'password'
const receipt = await token.modifyDeposit({
did,
password,
val: '50',
withdraw: true
})
async token.getAmountDeposited(did)
Gets the current amount deposited by an account to be used for redeeming rewards.
did
- DID
of the account to get the deposit balance forkeyringOpts
- optional Keyring options
const did = 'did:ara:a51aa651c5a28a7c0a8de007843a00dcd24f3cc893522d3fb093c2bb7a323785'
const amount = await token.getAmountDeposited(did)
token.constrainTokenValue(val)
Constrains token amount used in the EVM to its nominal value (Ara supports 18 decimals).
val
- The unconstrained token value as a String
const expandedValue = '1000000000000000000'
const constrainedValue = token.constrainTokenValue(expandedValue)
token.expandTokenValue(val)
Expands nominal token value to its expanded form used in the EVM (Ara supports 18 decimals).
val
- The expanded token value as a String
const constrainedValue = '1'
const expandedValue = token.expandTokenValue(constrainedValue)
async ownership.approveOwnershipTransfer(opts)
Approves an AFS ownership transfer request.
opts
contentDid
- The DID
of the content to transfer ownershippassword
- The password of the current ownerafsPassword
- The password of the AFSnewOwnerDid
- The DID
of the account to transfer ownership toestimate
- optional Flag to check cost of approveOwnershipTransfer
gasPrice
- Optional gas price in GWeikeyringOpts
- Optional keyring optionsonhash
onreceipt
onconfirmation
onerror
onmined
Returns transaction receipt
object.
const receipt = await ownership.approveOwnershipTransfer({
contentDid,
password,
afsPassword,
newOwnerDid
})
async ownership.revokeOwnershipRequest(opts)
Revokes an outstanding ownership request of an AFS.
opts
requesterDid
- The DID
of the account requesting ownershipcontentDid
- The DID
of the content to transfer ownershippassword
- The password of the account requesting ownershipestimate
- optional Flag to check cost of revokeOwnershipRequest
gasPrice
- Optional gas price in GWeikeyringOpts
- Optional keyring optionsonhash
onreceipt
onconfirmation
onerror
onmined
Returns transaction receipt
object.
const receipt = await ownership.revokeOwnershipRequest({
requesterDid,
contentDid,
password
})
async ownership.requestOwnership(opts)
Requests ownership of an AFS.
opts
requesterDid
- The DID
of the account requesting ownershipcontentDid
- The DID
of the content to transfer ownershippassword
- The password of the account requesting ownershipestimate
- optional Flag to check cost of requestOwnership
gasPrice
- Optional gas price in GWeikeyringOpts
- Optional keyring optionsonhash
onreceipt
onconfirmation
onerror
onmined
Returns transaction receipt
object.
const receipt = await ownership.requestOwnership({
requesterDid,
contentDid,
password
})
async ownership.hasRequested(opts)
Checks if a requester DID
has requested ownership of an AFS.
opts
requesterDid
- The DID
of the account requesting ownershipcontentDid
- The DID
of the content in questionkeyringOpts
- optional Keyring options
Returns boolean
.
const hasRequested = await ownership.hasRequested({ requesterDid, contentDid })
async ownership.getOwner(contentDid)
Gets the Ethereum address of the owner of an AFS.
contentDid
- The DID
of the content to get the owner for
const owner = await ownership.getOwner(contentDid)
Contributing
Releases follow Semantic Versioning
See Also
License
LGPL-3.0