caver.rpc.governance

caver.rpc.governance provides JSON-RPC call with the governance name space.

caver.rpc.governance.vote

caver.rpc.governance.vote(key, value [, callback])

Submits a new vote. If the node has the right to vote based on the governance mode, the vote can be submitted. If not, an error will occur and the vote will be ignored.

Parameters

Name	Type	Description
key	string	Name of the configuration setting to be changed. Key has the form "domain.field".
value	string | number | boolean	Various types of value for each key.
callback	function	(optional) Optional callback, which returns an error object as the first parameter and the result as the second.

For more details about the key and value for caver.rpc.governance.vote, please refer to governance_vote.

Return Value

Promise returns string

Type	Description
string	Result of vote submission.

Example

> caver.rpc.governance.vote('governance.governancemode', 'ballot').then(console.log)
Your vote was successfully placed.

caver.rpc.governance.showTally

caver.rpc.governance.showTally([callback])

Provides the current tally of governance votes. It shows the aggregate approval rate in percentage. The suggested change shall pass when the rate is over 50%.

Parameters

Name	Type	Description
callback	function	(optional) Optional callback, which returns an error object as the first parameter and the result as the second.

Return Value

Promise returns Array

Type	Description
Array	An array containing the vote's value and the approval rate in percentage.

Example

> caver.rpc.governance.showTally().then(console.log)
[
  {
    Key: 'governance.unitprice',
    Value: 25000000000,
    ApprovalPercentage: 33.33333333333333
  }
]

caver.rpc.governance.getTotalVotingPower

caver.rpc.governance.getTotalVotingPower([callback])

Provides the sum of all voting power that CNs have. Each CN has 1.0 ~ 2.0 voting power. In the "none" and "single" governance modes, totalVotingPower doesn't provide any information.

Parameters

Name	Type	Description
callback	function	(optional) Optional callback, which returns an error object as the first parameter and the result as the second.

Return Value

Promise returns number

Type	Description
number	Total Voting Power.

Example

> caver.rpc.governance.getTotalVotingPower().then(console.log)
3

caver.rpc.governance.getMyVotingPower

caver.rpc.governance.getMyVotingPower([callback])

Provides the voting power of the node. The voting power can be anywhere between 1.0 ~ 2.0. In the "none" and "single" governance modes, totalVotingPower doesn't provide any information.

Parameters

Name	Type	Description
callback	function	(optional) Optional callback, which returns an error object as the first parameter and the result as the second.

Return Value

Promise returns number

Type	Description
number	Node's Voting Power.

Example

> caver.rpc.governance.getMyVotingPower().then(console.log)
1

caver.rpc.governance.getMyVotes

caver.rpc.governance.getMyVotes([callback])

Provides my vote information in the epoch. Each vote is stored in a block when the user's node generates a new block. After current epoch ends, this information is cleared.

Parameters

Name	Type	Description
callback	function	(optional) Optional callback, which returns an error object as the first parameter and the result as the second.

Return Value

Promise returns Array

Type	Description
Array	Node's Voting status in the epoch.

Example

> caver.rpc.governance.getMyVotes().then(console.log)
[
  {
    Key: 'governance.unitprice',
    Value: 25000000000,
    Casted: true,
    BlockNum: 76899
  }
]

caver.rpc.governance.getChainConfig

caver.rpc.governance.getChainConfig([callback])

Provides the initial chain configuration. Because it just stores the initial configuration, if there were changes in the governance made by voting, the result of chainConfig will differ from the current states. To see the current information, please use itemsAt.

Parameters

Name	Type	Description
callback	function	(optional) Optional callback, which returns an error object as the first parameter and the result as the second.

Return Value

Promise returns object

Type	Description
object	The initial chain configuration

Example

> caver.rpc.governance.getChainConfig().then(console.log)
{
  chainId: 10000,
  istanbul: { epoch: 30, policy: 2, sub: 22 },
  unitPrice: 25000000000,
  deriveShaImpl: 2,
  governance: {
    governingNode: '0xbeafcca672100a88a953fcf5e882cb763f9e3de9',
    governanceMode: 'single',
    reward: {
      mintingAmount: 6400000000000000000,
      ratio: '50/40/10',
      useGiniCoeff: true,
      deferredTxFee: true,
      stakingUpdateInterval: 60,
      proposerUpdateInterval: 30,
      minimumStake: 5000000
    },
    kip71: {
      lowerboundbasefee: 25000000000,
      upperboundbasefee: 750000000000,
      gastarget: 30000000,
      maxblockgasusedforbasefee: 60000000,
      basefeedenominator: 20
    }
  }
}

caver.rpc.governance.getNodeAddress

caver.rpc.governance.getNodeAddress([callback])

Provides the address of the node that a user is using. It is derived from the nodekey and used to sign consensus messages. And the value of "governingnode" has to be one of validator's node address.

Parameters

Name	Type	Description
callback	function	(optional) Optional callback, which returns an error object as the first parameter and the result as the second.

Return Value

Promise returns string

Type	Description
string	The address of a node.

Example

> caver.rpc.governance.getNodeAddress().then(console.log)
0xbeafcca672100a88a953fcf5e882cb763f9e3de9

caver.rpc.governance.getItemsAt

caver.rpc.governance.getItemsAt([blockNumberOrTag] [, callback])

Returns governance items at a specific block. It is the result of previous voting of the block and used as configuration for chain at the given block number.

Parameters

Name	Type	Description
blockNumberOrTag	number | string	(optional) A block number, or the string latest or earliest. If omitted, latest will be used.
callback	function	(optional) Optional callback, which returns an error object as the first parameter and the result as the second.

Return Value

Promise returns object

Type	Description
object	The governance items.

Example

> caver.rpc.governance.getItemsAt().then(console.log)
{
  'governance.governancemode': 'ballot',
  'governance.governingnode': '0xbeafcca672100a88a953fcf5e882cb763f9e3de9',
  'governance.unitprice': 25000000000,
  'istanbul.committeesize': 22,
  'istanbul.epoch': 30,
  'istanbul.policy': 2,
  'kip71.basefeedenominator': 20,
  'kip71.gastarget': 30000000,
  'kip71.lowerboundbasefee': 25000000000,
  'kip71.maxblockgasusedforbasefee': 60000000,
  'kip71.upperboundbasefee': 750000000000,
  'reward.deferredtxfee': true,
  'reward.minimumstake': '5000000',
  'reward.mintingamount': '6400000000000000000',
  'reward.proposerupdateinterval': 30,
  'reward.ratio': '50/40/10',
  'reward.stakingupdateinterval': 60,
  'reward.useginicoeff': true
}

> caver.rpc.governance.getItemsAt('latest').then(console.log)

caver.rpc.governance.getPendingChanges

caver.rpc.governance.getPendingChanges([callback])

Returns the list of items that have received enough number of votes but not yet finalized. At the end of the current epoch, these changes will be finalized and the result will be in effect from the epoch after next epoch.

Parameters

Name	Type	Description
callback	function	(optional) Optional callback, which returns an error object as the first parameter and the result as the second.

Return Value

Promise returns object

Type	Description
object	Currently pending changes composed of keys and values.

Example

> caver.rpc.governance.getPendingChanges().then(console.log)
{ 'governance.governancemode': 'single' }

caver.rpc.governance.getIdxCache

caver.rpc.governance.getIdxCache([callback])

Returns an array of current idxCache in the memory cache. idxCache contains the block numbers where governance change happened. The cache can have up to 1000 block numbers in memory by default.

Parameters

Name	Type	Description
callback	function	(optional) Optional callback, which returns an error object as the first parameter and the result as the second.

Return Value

Promise returns object

Type	Description
Array	Block numbers where governance change happened.

Example

> caver.rpc.governance.getIdxCache().then(console.log)
[ 0, 60, 321180 ]

caver.rpc.governance.getIdxCacheFromDb

caver.rpc.governance.getIdxCacheFromDb([callback])

Returns an array that contains all block numbers at which any governance changes ever took place. The result of idxCacheFromDb is the same or longer than that of idxCache.

Parameters

Name	Type	Description
callback	function	(optional) Optional callback, which returns an error object as the first parameter and the result as the second.

Return Value

Promise returns object

Type	Description
Array	Block numbers where governance change happened.

Example

> caver.rpc.governance.getIdxCacheFromDb().then(console.log)
[ 0, 60, 321180 ]

caver.rpc.governance.getItemCacheFromDb

caver.rpc.governance.getItemCacheFromDb([callback])

Returns the governance information stored on the given block. If no changes are stored on the given block, the function returns null.

Parameters

Name	Type	Description
callback	function	(optional) Optional callback, which returns an error object as the first parameter and the result as the second.

Parameters

Name	Type	Description
blockNumber	number | string	A block number, or the hex number string to query the governance change made on the block.

Return Value

Promise returns object

Type	Description
object	Stored governance information at a given block.

Example

> caver.rpc.governance.getItemCacheFromDb(540).then(console.log)
{
  'governance.governancemode': 'single',
  'governance.governingnode': '0xbeafcca672100a88a953fcf5e882cb763f9e3de9',
  'governance.unitprice': 25000000000,
  'istanbul.committeesize': 22,
  'istanbul.epoch': 30,
  'istanbul.policy': 2,
  'kip71.basefeedenominator': 30,
  'kip71.gastarget': 30000000,
  'kip71.lowerboundbasefee': 25000000000,
  'kip71.maxblockgasusedforbasefee': 60000000,
  'kip71.upperboundbasefee': 750000000000,
  'reward.deferredtxfee': true,
  'reward.minimumstake': '5000000',
  'reward.mintingamount': '6400000000000000000',
  'reward.proposerupdateinterval': 30,
  'reward.ratio': '50/40/10',
  'reward.stakingupdateinterval': 60,
  'reward.useginicoeff': true
}

> caver.rpc.governance.getItemCacheFromDb(1).then(console.log)
null

caver.rpc.governance.getVotes

caver.rpc.governance.getVotes([callback])

Returns the votes from all nodes in the epoch. These votes are gathered from the header of each block.

Parameters

Name	Type	Description
callback	function	(optional) Optional callback, which returns an error object as the first parameter and the result as the second.

Return Value

Promise returns object

Type	Description
Array	Current votes composed of keys, values and node addresses.

Example

> caver.rpc.governance.getVotes().then(console.log)
[{
    key: 'reward.minimumstake',
    validator: '0xe733cb4d279da696f30d470f8c04decb54fcb0d2',
    value: '5000000'
}, {
    key: 'reward.useginicoeff',
    validator: '0xa5bccb4d279419abe2d470f8c04dec0789ac2d54',
    value: false
}]

caver.rpc.governance.getStakingInfo

caver.rpc.governance.getStakingInfo([blockNumberOrTag] [, callback])

Returns the staking information at a specific block.

Parameters

Name	Type	Description
blockNumberOrTag	number | string	(optional) A block number, or the string latest or earliest. If omitted, latest will be used.
callback	function	(optional) Optional callback, which returns an error object as the first parameter and the result as the second.

Return Value

Promise returns object

Type	Description
object	Staking information. Refer to governance_getStakingInfo for a description of the return result.

Example

> caver.rpc.governance.getStakingInfo().then(console.log)
{
  BlockNum: 321600,
  CouncilNodeAddrs: [],
  CouncilStakingAddrs: [],
  CouncilRewardAddrs: [],
  KIRAddr: '0x0000000000000000000000000000000000000000',
  PoCAddr: '0x0000000000000000000000000000000000000000',
  UseGini: false,
  Gini: -1,
  CouncilStakingAmounts: []
}