staking_client
This client enables to perform actions on staking contracts and obtain staking information from both the contracts and subgraph.
Internally, the SDK will use one network or another according to the network ID of the web3. To use this client, you need to create Web3 instance, and configure default account, as well as some middlewares.
Code Example
With Signer
from eth_typing import URI
from web3 import Web3
from web3.middleware import construct_sign_and_send_raw_middleware
from web3.providers.auto import load_provider_from_uri
from human_protocol_sdk.staking import StakingClient
def get_w3_with_priv_key(priv_key: str):
w3 = Web3(load_provider_from_uri(URI("http://localhost:8545")))
gas_payer = w3.eth.account.from_key(priv_key)
w3.eth.default_account = gas_payer.address
w3.middleware_onion.add(
construct_sign_and_send_raw_middleware(gas_payer),
"construct_sign_and_send_raw_middleware",
)
return (w3, gas_payer)
(w3, gas_payer) = get_w3_with_priv_key('YOUR_PRIVATE_KEY')
staking_client = StakingClient(w3)
Without Signer (For read operations only)
from eth_typing import URI
from web3 import Web3
from web3.providers.auto import load_provider_from_uri
from human_protocol_sdk.staking import StakingClient
w3 = Web3(load_provider_from_uri(URI("http://localhost:8545")))
staking_client = StakingClient(w3)
Module
class human_protocol_sdk.staking.staking_client.StakingClient(w3)
Bases: object
A class used to manage staking on the HUMAN network.
__init__(w3)
Initializes a Staking instance
Parameters: w3 (
Web3
) – Web3 instance
approve_stake(amount, tx_options=None)
Approves HMT token for Staking.
Parameters:
amount (
Decimal
) – Amount to approvetx_options (
Optional
[TxParams
]) – (Optional) Additional transaction parameters
Return type:
None
Returns: None
Validate: Amount must be greater than 0
Example:
from eth_typing import URI from web3 import Web3 from web3.middleware import construct_sign_and_send_raw_middleware from web3.providers.auto import load_provider_from_uri from human_protocol_sdk.staking import StakingClient def get_w3_with_priv_key(priv_key: str): w3 = Web3(load_provider_from_uri(URI("http://localhost:8545"))) gas_payer = w3.eth.account.from_key(priv_key) w3.eth.default_account = gas_payer.address w3.middleware_onion.add( construct_sign_and_send_raw_middleware(gas_payer), "construct_sign_and_send_raw_middleware", ) return (w3, gas_payer) (w3, gas_payer) = get_w3_with_priv_key('YOUR_PRIVATE_KEY') staking_client = StakingClient(w3) amount = Web3.to_wei(5, 'ether') # convert from ETH to WEI staking_client.approve_stake(amount)
slash(slasher, staker, escrow_address, amount, tx_options=None)
Slashes HMT token.
Parameters:
slasher (
str
) – Address of the slasherstaker (
str
) – Address of the stakerescrow_address (
str
) – Address of the escrowamount (
Decimal
) – Amount to slashtx_options (
Optional
[TxParams
]) – (Optional) Additional transaction parameters
Return type:
None
Returns: None
Validate:
Amount must be greater than 0
Amount must be less than or equal to the amount allocated to the escrow (on-chain)
Escrow address must be valid
Example:
from eth_typing import URI from web3 import Web3 from web3.middleware import construct_sign_and_send_raw_middleware from web3.providers.auto import load_provider_from_uri from human_protocol_sdk.staking import StakingClient def get_w3_with_priv_key(priv_key: str): w3 = Web3(load_provider_from_uri(URI("http://localhost:8545"))) gas_payer = w3.eth.account.from_key(priv_key) w3.eth.default_account = gas_payer.address w3.middleware_onion.add( construct_sign_and_send_raw_middleware(gas_payer), "construct_sign_and_send_raw_middleware", ) return (w3, gas_payer) (w3, gas_payer) = get_w3_with_priv_key('YOUR_PRIVATE_KEY') staking_client = StakingClient(w3) amount = Web3.to_wei(5, 'ether') # convert from ETH to WEI staking_client.slash( '0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266', '0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266', '0x62dD51230A30401C455c8398d06F85e4EaB6309f', amount )
stake(amount, tx_options=None)
Stakes HMT token.
Parameters:
amount (
Decimal
) – Amount to staketx_options (
Optional
[TxParams
]) – (Optional) Additional transaction parameters
Return type:
None
Returns: None
Validate:
Amount must be greater than 0
Amount must be less than or equal to the approved amount (on-chain)
Amount must be less than or equal to the balance of the staker (on-chain)
Example:
from eth_typing import URI from web3 import Web3 from web3.middleware import construct_sign_and_send_raw_middleware from web3.providers.auto import load_provider_from_uri from human_protocol_sdk.staking import StakingClient def get_w3_with_priv_key(priv_key: str): w3 = Web3(load_provider_from_uri(URI("http://localhost:8545"))) gas_payer = w3.eth.account.from_key(priv_key) w3.eth.default_account = gas_payer.address w3.middleware_onion.add( construct_sign_and_send_raw_middleware(gas_payer), "construct_sign_and_send_raw_middleware", ) return (w3, gas_payer) (w3, gas_payer) = get_w3_with_priv_key('YOUR_PRIVATE_KEY') staking_client = StakingClient(w3) amount = Web3.to_wei(5, 'ether') # convert from ETH to WEI staking_client.approve_stake(amount) # if it was already approved before, this is not necessary staking_client.stake(amount)
unstake(amount, tx_options=None)
Unstakes HMT token.
Parameters:
amount (
Decimal
) – Amount to unstaketx_options (
Optional
[TxParams
]) – (Optional) Additional transaction parameters
Return type:
None
Returns: None
Validate:
Amount must be greater than 0
Amount must be less than or equal to the staked amount which is not locked / allocated (on-chain)
Example:
from eth_typing import URI from web3 import Web3 from web3.middleware import construct_sign_and_send_raw_middleware from web3.providers.auto import load_provider_from_uri from human_protocol_sdk.staking import StakingClient def get_w3_with_priv_key(priv_key: str): w3 = Web3(load_provider_from_uri(URI("http://localhost:8545"))) gas_payer = w3.eth.account.from_key(priv_key) w3.eth.default_account = gas_payer.address w3.middleware_onion.add( construct_sign_and_send_raw_middleware(gas_payer), "construct_sign_and_send_raw_middleware", ) return (w3, gas_payer) (w3, gas_payer) = get_w3_with_priv_key('YOUR_PRIVATE_KEY') staking_client = StakingClient(w3) amount = Web3.to_wei(5, 'ether') # convert from ETH to WEI staking_client.unstake(amount)
withdraw(tx_options=None)
Withdraws HMT token.
Parameters: tx_options (
Optional
[TxParams
]) – (Optional) Additional transaction parametersReturn type:
None
Returns: None
Validate:
There must be unstaked tokens which is unlocked (on-chain)
Example:
from eth_typing import URI from web3 import Web3 from web3.middleware import construct_sign_and_send_raw_middleware from web3.providers.auto import load_provider_from_uri from human_protocol_sdk.staking import StakingClient def get_w3_with_priv_key(priv_key: str): w3 = Web3(load_provider_from_uri(URI("http://localhost:8545"))) gas_payer = w3.eth.account.from_key(priv_key) w3.eth.default_account = gas_payer.address w3.middleware_onion.add( construct_sign_and_send_raw_middleware(gas_payer), "construct_sign_and_send_raw_middleware", ) return (w3, gas_payer) (w3, gas_payer) = get_w3_with_priv_key('YOUR_PRIVATE_KEY') staking_client = StakingClient(w3) staking_client.withdraw()
exception human_protocol_sdk.staking.staking_client.StakingClientError
Bases: Exception
Raises when some error happens when interacting with staking.
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