etcher-sdk
Version:
96 lines • 3.5 kB
JavaScript
;
/*
* Copyright 2018 balena.io
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.retryOnTransientError = exports.BlocksVerificationError = exports.ChecksumVerificationError = exports.VerificationError = exports.NotCapable = void 0;
const process_1 = require("process");
const utils_1 = require("./utils");
class NotCapable extends Error {
}
exports.NotCapable = NotCapable;
class VerificationError extends Error {
constructor() {
super(...arguments);
this.code = 'EVALIDATION';
}
}
exports.VerificationError = VerificationError;
class ChecksumVerificationError extends VerificationError {
constructor(message, checksum, expectedChecksum) {
super(message);
this.checksum = checksum;
this.expectedChecksum = expectedChecksum;
}
}
exports.ChecksumVerificationError = ChecksumVerificationError;
function blocksVerificationErrorMessage(blocksWithChecksum, checksum) {
const start = blocksWithChecksum.blocks[0].offset;
const lastBlock = blocksWithChecksum.blocks[blocksWithChecksum.blocks.length - 1];
const end = lastBlock.offset + lastBlock.length - 1;
return `Checksum does not match for range [${start}, ${end}]: "${blocksWithChecksum.checksum}" != "${checksum}"`;
}
class BlocksVerificationError extends VerificationError {
constructor(blocks, checksum) {
super(blocksVerificationErrorMessage(blocks, checksum));
this.blocks = blocks;
this.checksum = checksum;
}
}
exports.BlocksVerificationError = BlocksVerificationError;
/**
* @summary Determine whether an error is considered a
* transient occurrence, and the operation should be retried
* Errors considered potentially temporary are:
* - Mac OS: ENXIO, EBUSY
* - Windows: ENOENT, UNKNOWN
* - Linux: EIO, EBUSY
*/
function isTransientError(error) {
if (process_1.platform === 'darwin') {
return error.code === 'ENXIO' || error.code === 'EBUSY';
}
else if (process_1.platform === 'linux') {
return error.code === 'EIO' || error.code === 'EBUSY';
}
else if (process_1.platform === 'win32') {
return (error.code === 'ENOENT' ||
error.code === 'UNKNOWN' ||
error.code === 'EBUSY');
}
return false;
}
async function retryOnTransientError(fn, maxRetries, baseDelay) {
let retries = 0;
// eslint-disable-next-line no-constant-condition
while (true) {
try {
return await fn();
}
catch (error) {
if (isTransientError(error)) {
if (retries < maxRetries) {
retries += 1;
await (0, utils_1.delay)(baseDelay * retries);
continue;
}
error.code = 'EUNPLUGGED';
}
throw error;
}
}
}
exports.retryOnTransientError = retryOnTransientError;
//# sourceMappingURL=errors.js.map