mcps-sdk-js
Version:
MCPS JavaScript SDK
167 lines • 5.72 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.RpcClient = void 0;
const axios_1 = require("axios");
const utils_1 = require("../utils");
const errors_1 = require("../errors");
const is = require("is_js");
const types = require("../types");
/**
* Tendermint JSON RPC Client
* @since v0.17
*/
class RpcClient {
/**
* Initialize Tendermint JSON RPC Client
* @param url Rpc address of mcps node
* @param config The other configurations, refer to { [[AxiosRequestConfig]] }
* @returns
* @since v0.17
*/
constructor(config) {
if (is.empty(config)) {
throw new errors_1.SdkError('RpcClient Config not initialized');
}
if (is.empty(config.baseURL)) {
throw new errors_1.SdkError('baseURL of RpcClient cannot be empty');
}
if (is.empty(config.timeout)) {
config.timeout = 2000; // Set default timeout
}
config.url = '/'; // Fixed url
this.config = config;
this.instance = axios_1.default.create(config);
}
/**
* Post Tendermint JSON RPC Request
*
* @param method Tendermint RPC method
* @param params Request params
* @returns
* @since v0.17
*/
request(method, params = {}) {
const data = {
jsonrpc: '2.0',
id: 'jsonrpc-client',
method,
params,
};
return this.instance
.post(this.config.baseURL, data)
.then(response => {
const res = response.data;
// Internal error
if (res.error) {
console.error(res.error);
throw new errors_1.SdkError(res.error.message, res.error.code);
}
return res.result;
});
}
/**
* Tendermint ABCI protobuf Query
*
* @param path Querier path
* @param protoRequest protobuf Request
* @param protoResponse protobuf Response so if "protoResponse" exists, well deserialize "ABCI Response" with "protoResponse" and return json object, else return base64 string
* @returns
* @since v0.17
*/
protoQuery(path, protoRequest, protoResponse) {
const params = {
path,
};
if (protoRequest && protoRequest.serializeBinary) {
params.data = Buffer.from(protoRequest.serializeBinary()).toString('hex');
}
return this.request(types.RpcMethods.AbciQuery, params).then(response => {
if (response && response.response) {
if (response.response.value) {
if (protoResponse) {
try {
return protoResponse.deserializeBinary(response.response.value).toObject();
}
catch (err) {
console.error(`protobuf deserialize error from ${path}`);
return response.response.value;
}
}
else {
return response.response.value;
}
}
else if (response.response.code) {
throw new errors_1.SdkError(response.response.log, response.response.code);
}
else {
return null;
}
}
throw new errors_1.SdkError(`Internal Error from ${path}:${response.response.log}`);
});
}
/**
* Tendermint ABCI Query
*
* @param path Querier path
* @param data Input params
* @param height Use a specific height to query state at (this can error if the node is pruning state)
* @returns
* @since v0.17
*/
abciQuery(path, data, height) {
const params = {
path,
};
if (data) {
params.data = utils_1.Utils.obj2hexstring(data);
}
if (height) {
params.height = String(height);
}
return this.request(types.RpcMethods.AbciQuery, params).then(response => {
if (response && response.response) {
if (response.response.value) {
const value = Buffer.from(response.response.value, 'base64').toString();
try {
return JSON.parse(value).value;
}
catch (err) {
return value;
}
// const res = JSON.parse(value);
// if (!res) return {};
// if (res.type && res.value) return res.value;
// return res;
}
else if (response.response.code) {
throw new errors_1.SdkError(response.response.log, response.response.code);
}
else {
return null;
}
}
throw new errors_1.SdkError(`Internal Error from ${path}:${response.response.log}`);
});
}
/**
*
* @param key The store key
* @param storeName The store name
* @param height Block height to query, omit to get most recent provable block
* @returns
* @since v0.17
*/
queryStore(key, storeName, height) {
const path = `/store/${storeName}/key`;
const params = {
path,
data: utils_1.Utils.ab2hexstring(key),
height: height ? String(height) : '0',
};
return this.request(types.RpcMethods.AbciQuery, params);
}
}
exports.RpcClient = RpcClient;
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