This client enables to perform actions on KVStore contract and obtain 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
Copy 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 . kvstore import KVStoreClient
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' )
kvstore_client = KVStoreClient (w3)
Without Signer (For read operations only)
Copy from eth_typing import URI
from web3 import Web3
from web3 . providers . auto import load_provider_from_uri
from human_protocol_sdk . kvstore import KVStoreClient
w3 = Web3 ( load_provider_from_uri ( URI ( "http://localhost:8545" )))
kvstore_client = KVStoreClient (w3)
Module
class human_protocol_sdk.kvstore.kvstore_client.KVStoreClient(web3, gas_limit=None)
Bases: object
A class used to manage kvstore on the HUMAN network.
__init__(web3, gas_limit=None)
Initializes a KVStore instance.
Parameters: web3 (Web3
) – The Web3 object
set(key, value, tx_options=None)
Sets the value of a key-value pair in the contract.
Parameters:
key (str
) – The key of the key-value pair to set
value (str
) – The value of the key-value pair to set
tx_options (Optional
[TxParams
]) – (Optional) Additional transaction parameters
Example:
Copy 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 . kvstore import KVStoreClient
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' )
kvstore_client = KVStoreClient (w3)
kvstore_client . set ( 'Role' , 'RecordingOracle' )
set_bulk(keys, values, tx_options=None)
Sets multiple key-value pairs in the contract.
Parameters:
keys (List
[str
]) – A list of keys to set
values (List
[str
]) – A list of values to set
tx_options (Optional
[TxParams
]) – (Optional) Additional transaction parameters
Example:
Copy 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 . kvstore import KVStoreClient
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' )
kvstore_client = KVStoreClient (w3)
keys = [ 'Role' , 'Webhook_url' ];
values = [ 'RecordingOracle' , 'http://localhost' ];
kvstore_client . set_bulk (keys, values)
set_file_url_and_hash(url, key='url', tx_options=None)
Sets a URL value for the address that submits the transaction, and its hash.
Parameters:
key (Optional
[str
]) – Configurable URL key. url by default.
tx_options (Optional
[TxParams
]) – (Optional) Additional transaction parameters
Raises: KVStoreClientError – If an error occurs while validating URL, or handling transaction
Example:
Copy 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 . kvstore import KVStoreClient
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' )
kvstore_client = KVStoreClient (w3)
kvstore_client . set_file_url_and_hash ( 'http://localhost' )
kvstore_client . set_file_url_and_hash ( 'https://linkedin.com/me' , 'linkedin_url' )
exception human_protocol_sdk.kvstore.kvstore_client.KVStoreClientError
Bases: Exception
Raises when some error happens when interacting with kvstore.