KVStoreClient

@human-protocol/sdk / Modules / kvstore / KVStoreClient

Class: KVStoreClient

kvstore.KVStoreClient

Introduction

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 runner. To use this client, it is recommended to initialize it using the static build method.

static async build(runner: ContractRunner);

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 in order to send transactions caling the contract functions.

  • Provider: when the user wants to use this model in order 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(signer);

Hierarchy

Table of contents

Constructors

Properties

Methods

Constructors

constructor

• new KVStoreClient(runner, networkData): KVStoreClient

KVStoreClient constructor

Parameters

Name
Type
Description

runner

ContractRunner

The Runner object to interact with the Ethereum network

networkData

NetworkData

-

Returns

KVStoreClient

Overrides

BaseEthersClient.constructor

Defined in

kvstore.ts:100

Properties

contract

• Private contract: KVStore

Defined in

kvstore.ts:92

networkData

• networkData: NetworkData

Inherited from

BaseEthersClient.networkData

Defined in

base.ts:12

runner

• Protected runner: ContractRunner

Inherited from

BaseEthersClient.runner

Defined in

base.ts:11

Methods

get

▸ get(address, key): Promise<string>

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

Parameters

Name
Type
Description

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');

Defined in

kvstore.ts:301

getFileUrlAndVerifyHash

▸ getFileUrlAndVerifyHash(address, urlKey?): Promise<string>

Gets the URL value of the given entity, and verify its hash.

Parameters

Name
Type
Default value
Description

address

string

undefined

Address from which to get the URL value.

urlKey

string

'url'

Configurable URL key. url by default.

Returns

Promise<string>

URL value for the given address if exists, and the content is valid

Code example

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 url = await kvstoreClient.getFileUrlAndVerifyHash('0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266');
const linkedinUrl = await kvstoreClient.getFileUrlAndVerifyHash(
   '0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266',
   'linkedin_url'
);

Defined in

kvstore.ts:340

getPublicKey

▸ getPublicKey(address): Promise<string>

Gets the public key of the given entity, and verify its hash.

Parameters

Name
Type
Description

address

string

Address from which to get the public key.

Returns

Promise<string>

Public key for the given address if exists, and the content is valid

Code example

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 publicKey = await kvstoreClient.getPublicKey('0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266');

Defined in

kvstore.ts:398

set

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

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

Parameters

Name
Type
Description

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');

Defined in

kvstore.ts:163

setBulk

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

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

Parameters

Name
Type
Description

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.set(keys, values);

Defined in

kvstore.ts:206

setFileUrlAndHash

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

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

Parameters

Name
Type
Default value
Description

url

string

undefined

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);

Defined in

kvstore.ts:249

build

▸ build(runner): Promise<KVStoreClient>

Creates an instance of KVStoreClient from a runner.

Parameters

Name
Type
Description

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

Defined in

kvstore.ts:118

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