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OracleJS

Install

pnpm install @refractedlabs/oraclejs

Usage

gRPC-web Clients​

Import the refractedlabs object from @refractedlabs/oraclejs.

import { refractedlabs } from '@refractedlabs/oraclejs';

const client = await refractedlabs.ClientFactory.createGrpcWebClient({endpoint: GRPC_ENDPOINT});

// now you can query the oracle module
const params = await client.refractedlabs.oracle.v1.params();

// you can also query the cosmos modules
const balance = await client.cosmos.bank.v1beta1.allBalances({ address: 'refractedlabs1addresshere' });

Composing Messages​

import { refractedlabs } from '@refractedlabs/oraclejs';

// oracle messages
const {
  updateParams,
  delegateFeedConsent,
  oraclePreVote,
  oracleVote,
  oracleCombinedVote
} = refractedlabs.oracle.v1.MessageComposer.withTypeUrl;

Example Project​

example is a sample project that depends on @refractedlabs/oraclejs and contains example on how to query data or sign and send messages.

Connecting with Wallets and Signing Messages​

⚡️ For web interfaces, we recommend using cosmos-kit. Continue below to see how to manually construct signers and clients.

Here are the docs on creating signers in cosmos-kit that can be used with Keplr and other wallets.

Initializing the Stargate Client​

Use getSigningRefractedlabsClient to get your SigningStargateClient, with the proto/amino messages full-loaded. No need to manually add amino types, just require and initialize the client:

import { getSigningRefractedlabsClient } from '@refractedlabs/oraclejs';

const stargateClient = await getSigningRefractedlabsClient({
  rpcEndpoint,
  signer // OfflineSigner
});

Creating Signers​

To broadcast messages, you can create signers with a variety of options:

Amino Signer

Likely you'll want to use the Amino, so unless you need proto, you should use this one:

import { getOfflineSignerAmino as getOfflineSigner } from 'cosmjs-utils';

Proto Signer

import { getOfflineSignerProto as getOfflineSigner } from 'cosmjs-utils';

WARNING: NOT RECOMMENDED TO USE PLAIN-TEXT MNEMONICS. Please take care of your security and use best practices such as AES encryption and/or methods from 12factor applications.

import { chains } from 'chain-registry';

const mnemonic = 'unfold client turtle either pilot stock floor glow toward bullet car science';
const chain = chains.find(({ chain_name }) => chain_name === 'refractedlabs');
const signer = await getOfflineSigner({
  mnemonic,
  chain
});

Broadcasting Messages​

Now that you have your stargateClient, you can broadcast messages:

const { oraclePreVote } = refractedlabs.oracle.v1.MessageComposer.withTypeUrl;

const msg = oraclePreVote({
  hash: "hash",
  feeder: "feeder",
  validator: "validator"
});

const fee: StdFee = {
  amount: [
      {
          denom: 'coin',
          amount: '864'
      }
  ],
  gas: '86364'
};
const response = await stargateClient.signAndBroadcast(address, [msg], fee);

Advanced Usage​

If you want to manually construct a stargate client

import { OfflineSigner, GeneratedType, Registry } from "@cosmjs/proto-signing";
import { AminoTypes, SigningStargateClient } from "@cosmjs/stargate";

import {
    cosmosAminoConverters,
    cosmosProtoRegistry,
    cosmwasmAminoConverters,
    cosmwasmProtoRegistry,
    ibcProtoRegistry,
    ibcAminoConverters,
    refractedlabsAminoConverters,
    refractedlabsProtoRegistry
} from '@refractedlabs/oraclejs';

const signer: OfflineSigner = /* create your signer (see above)  */
const rpcEndpint = '<https://rpc.cosmos.directory/refractedlabs>'; // or another URL

const protoRegistry: ReadonlyArray<[string, GeneratedType]> = [
    ...cosmosProtoRegistry,
    ...cosmwasmProtoRegistry,
    ...ibcProtoRegistry,
    ...refractedlabsProtoRegistry
];

const aminoConverters = {
    ...cosmosAminoConverters,
    ...cosmwasmAminoConverters,
    ...ibcAminoConverters,
    ...refractedlabsAminoConverters
};

const registry = new Registry(protoRegistry);
const aminoTypes = new AminoTypes(aminoConverters);

const stargateClient = await SigningStargateClient.connectWithSigner(rpcEndpoint, signer, {
    registry,
    aminoTypes
});

Developing

When first cloning the repo:

pnpm install

Codegen​

Contract schemas live in ./contracts, and protos in ./proto. Look inside of scripts/codegen.js and configure the settings for bundling your SDK and contracts into @refractedlabs/oraclejs:

pnpm codegen

Publishing​

Build the types and then publish:

pnpm compile
pnpm publish

Credits

🛠 Built by Cosmology — if you like our tools, please consider delegating to our validator ⚛️

Code built with the help of these related projects: