KVStoreClient

@human-protocol/sdk

---

@human-protocol/sdk / kvstore / KVStoreClient

Class: KVStoreClient

Defined in: kvstore.ts:98

Introduction

This client enables performing actions on KVStore contract and obtaining information from both the contracts and subgraph.

Internally, the SDK will use one network or another according to the network ID of the runner. To use this client, it is recommended to initialize it using the static build method.

static async build(runner: ContractRunner): Promise<KVStoreClient>;

A Signer or a Provider should be passed depending on the use case of this module:

• Signer: when the user wants to use this model to send transactions calling the contract functions.

• Provider: when the user wants to use this model to get information from the contracts or subgraph.

Installation

npm

npm install @human-protocol/sdk

yarn

yarn install @human-protocol/sdk

Code example

Signer

Using private key (backend)

import { KVStoreClient } from '@human-protocol/sdk';
import { Wallet, providers } from 'ethers';

const rpcUrl = 'YOUR_RPC_URL';
const privateKey = 'YOUR_PRIVATE_KEY';

const provider = new providers.JsonRpcProvider(rpcUrl);
const signer = new Wallet(privateKey, provider);
const kvstoreClient = await KVStoreClient.build(signer);

Using Wagmi (frontend)

import { useSigner, useChainId } from 'wagmi';
import { KVStoreClient } from '@human-protocol/sdk';

const { data: signer } = useSigner();
const kvstoreClient = await KVStoreClient.build(signer);

Provider

import { KVStoreClient } from '@human-protocol/sdk';
import { providers } from 'ethers';

const rpcUrl = 'YOUR_RPC_URL';

const provider = new providers.JsonRpcProvider(rpcUrl);
const kvstoreClient = await KVStoreClient.build(provider);

Extends

• BaseEthersClient

Constructors

Constructor

new KVStoreClient(runner, networkData): KVStoreClient

Defined in: kvstore.ts:107

KVStoreClient constructor

Parameters

runner

ContractRunner

The Runner object to interact with the Ethereum network

networkData

NetworkData

The network information required to connect to the KVStore contract

Returns

KVStoreClient

Overrides

BaseEthersClient.constructor

Properties

networkData

networkData: NetworkData

Defined in: base.ts:12

Inherited from

BaseEthersClient.networkData

---

runner

protected runner: ContractRunner

Defined in: base.ts:11

Inherited from

BaseEthersClient.runner

Methods

get()

get(address, key): Promise<string>

Defined in: kvstore.ts:308

Gets the value of a key-value pair in the contract.

Parameters

address

string

Address from which to get the key value.

key

string

Key to obtain the value.

Returns

Promise<string>

Value of the key.

Code example

Need to have available stake.

import { providers } from 'ethers';
import { KVStoreClient } from '@human-protocol/sdk';

const rpcUrl = 'YOUR_RPC_URL';

const provider = new providers.JsonRpcProvider(rpcUrl);
const kvstoreClient = await KVStoreClient.build(provider);

const value = await kvstoreClient.get('0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266', 'Role');

---

set()

set(key, value, txOptions?): Promise<void>

Defined in: kvstore.ts:170

This function sets a key-value pair associated with the address that submits the transaction.

Parameters

key

string

Key of the key-value pair

value

string

Value of the key-value pair

txOptions?

Overrides = {}

Additional transaction parameters (optional, defaults to an empty object).

Returns

Promise<void>

Returns void if successful. Throws error if any.

Code example

Need to have available stake.

import { Wallet, providers } from 'ethers';
import { KVStoreClient } from '@human-protocol/sdk';

const rpcUrl = 'YOUR_RPC_URL';
const privateKey = 'YOUR_PRIVATE_KEY';

const provider = new providers.JsonRpcProvider(rpcUrl);
const signer = new Wallet(privateKey, provider);
const kvstoreClient = await KVStoreClient.build(signer);

await kvstoreClient.set('Role', 'RecordingOracle');

---

setBulk()

setBulk(keys, values, txOptions?): Promise<void>

Defined in: kvstore.ts:213

This function sets key-value pairs in bulk associated with the address that submits the transaction.

Parameters

keys

string[]

Array of keys (keys and value must have the same order)

values

string[]

Array of values

txOptions?

Overrides = {}

Additional transaction parameters (optional, defaults to an empty object).

Returns

Promise<void>

Returns void if successful. Throws error if any.

Code example

Need to have available stake.

import { Wallet, providers } from 'ethers';
import { KVStoreClient } from '@human-protocol/sdk';

const rpcUrl = 'YOUR_RPC_URL';
const privateKey = 'YOUR_PRIVATE_KEY';

const provider = new providers.JsonRpcProvider(rpcUrl);
const signer = new Wallet(privateKey, provider);
const kvstoreClient = await KVStoreClient.build(signer);

const keys = ['role', 'webhook_url'];
const values = ['RecordingOracle', 'http://localhost'];
await kvstoreClient.setBulk(keys, values);

---

setFileUrlAndHash()

setFileUrlAndHash(url, urlKey, txOptions?): Promise<void>

Defined in: kvstore.ts:256

Sets a URL value for the address that submits the transaction, and its hash.

Parameters

url

string

URL to set

urlKey

string = 'url'

Configurable URL key. url by default.

txOptions?

Overrides = {}

Additional transaction parameters (optional, defaults to an empty object).

Returns

Promise<void>

Returns void if successful. Throws error if any.

Code example

import { Wallet, providers } from 'ethers';
import { KVStoreClient } from '@human-protocol/sdk';

const rpcUrl = 'YOUR_RPC_URL';
const privateKey = 'YOUR_PRIVATE_KEY';

const provider = new providers.JsonRpcProvider(rpcUrl);
const signer = new Wallet(privateKey, provider);
const kvstoreClient = await KVStoreClient.build(signer);

await kvstoreClient.setFileUrlAndHash('example.com');
await kvstoreClient.setFileUrlAndHash('linkedin.com/example', 'linkedin_url');

---

build()

static build(runner): Promise<KVStoreClient>

Defined in: kvstore.ts:125

Creates an instance of KVStoreClient from a runner.

Parameters

runner

ContractRunner

The Runner object to interact with the Ethereum network

Returns

Promise<KVStoreClient>

• An instance of KVStoreClient

Throws

• Thrown if the provider does not exist for the provided Signer

Throws

• Thrown if the network's chainId is not supported