@metamask/keyring-snap-sdk
Version:
MetaMask Keyring Snap SDK
89 lines • 3.63 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.handleKeyringRequest = handleKeyringRequest;
const v2_1 = require("@metamask/keyring-api/v2");
const keyring_utils_1 = require("@metamask/keyring-utils");
const superstruct_1 = require("@metamask/superstruct");
const errors_1 = require("../errors.cjs");
const rpc_handler_1 = require("../rpc-handler.cjs");
// ESLint does not like our custom error classes in this repo for some reason, they do extend Error, so unsure why.
/* eslint-disable @typescript-eslint/only-throw-error */
/**
* Inner function that dispatches JSON-RPC request to the associated Keyring
* methods.
*
* @param keyring - Keyring instance.
* @param request - Keyring JSON-RPC request.
* @returns A promise that resolves to the keyring response.
*/
async function dispatchKeyringRequest(keyring, request) {
// We first have to make sure that the request is a valid JSON-RPC request so
// we can check its method name.
(0, superstruct_1.assert)(request, keyring_utils_1.JsonRpcRequestStruct);
switch (request.method) {
case `${v2_1.KeyringRpcMethod.GetAccounts}`: {
(0, superstruct_1.assert)(request, v2_1.GetAccountsRequestStruct);
return keyring.getAccounts();
}
case `${v2_1.KeyringRpcMethod.GetAccount}`: {
(0, superstruct_1.assert)(request, v2_1.GetAccountRequestStruct);
return keyring.getAccount(request.params.id);
}
case `${v2_1.KeyringRpcMethod.CreateAccounts}`: {
(0, superstruct_1.assert)(request, v2_1.CreateAccountsRequestStruct);
return keyring.createAccounts(request.params);
}
case `${v2_1.KeyringRpcMethod.DeleteAccount}`: {
(0, superstruct_1.assert)(request, v2_1.DeleteAccountRequestStruct);
return keyring.deleteAccount(request.params.id);
}
case `${v2_1.KeyringRpcMethod.ExportAccount}`: {
if (keyring.exportAccount === undefined) {
throw new rpc_handler_1.MethodNotSupportedError(request.method);
}
(0, superstruct_1.assert)(request, v2_1.ExportAccountRequestStruct);
return keyring.exportAccount(request.params.id, request.params.options);
}
case `${v2_1.KeyringRpcMethod.SubmitRequest}`: {
(0, superstruct_1.assert)(request, v2_1.SubmitRequestRequestStruct);
return keyring.submitRequest(request.params);
}
default: {
throw new rpc_handler_1.MethodNotSupportedError(request.method);
}
}
}
/**
* Handles a keyring (v2) JSON-RPC request.
*
* This function is meant to be used as a handler for Keyring (v2) JSON-RPC requests
* in an Accounts Snap.
*
* @param keyring - Keyring instance.
* @param request - Keyring JSON-RPC request.
* @returns A promise that resolves to the keyring response.
* @example
* ```ts
* export const onKeyringRequest: OnKeyringRequestHandler = async ({
* origin,
* request,
* }) => {
* return await handleKeyringRequest(keyring, request);
* };
* ```
*/
async function handleKeyringRequest(keyring, request) {
try {
return await dispatchKeyringRequest(keyring, request);
}
catch (error) {
if ((0, errors_1.isSnapError)(error)) {
throw error;
}
const message = error instanceof Error && typeof error.message === 'string'
? error.message
: 'An unknown error occurred while handling the keyring (v2) request';
throw new Error(message);
}
}
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