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backuptask: make upload/download async

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This commit is contained in:
Girish Ramakrishnan
2022-04-30 16:42:14 -07:00
parent a098c6da34
commit 6e98f5f36c
3 changed files with 47 additions and 45 deletions
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62
src/backupformat/tgz.js
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@@ -133,55 +133,63 @@ function tarExtract(inStream, dataLayout, encryption) {
return ps;
}
function download(backupConfig, remotePath, dataLayout, progressCallback, callback) {
async function download(backupConfig, remotePath, dataLayout, progressCallback) {
assert.strictEqual(typeof backupConfig, 'object');
assert.strictEqual(typeof remotePath, 'string');
assert(dataLayout instanceof DataLayout, 'dataLayout must be a DataLayout');
assert.strictEqual(typeof progressCallback, 'function');
assert.strictEqual(typeof callback, 'function');
debug(`download: Downloading ${remotePath} to ${dataLayout.toString()}`);
const backupFilePath = getBackupFilePath(backupConfig, remotePath);
async.retry({ times: 5, interval: 20000 }, function (retryCallback) {
progressCallback({ message: `Downloading backup ${remotePath}` });
return new Promise((resolve, reject) => {
async.retry({ times: 5, interval: 20000 }, function (retryCallback) {
progressCallback({ message: `Downloading backup ${remotePath}` });
storage.api(backupConfig.provider).download(backupConfig, backupFilePath, function (error, sourceStream) {
if (error) return retryCallback(error);
storage.api(backupConfig.provider).download(backupConfig, backupFilePath, function (error, sourceStream) {
if (error) return retryCallback(error);
const ps = tarExtract(sourceStream, dataLayout, backupConfig.encryption);
const ps = tarExtract(sourceStream, dataLayout, backupConfig.encryption);
ps.on('progress', function (progress) {
const transferred = Math.round(progress.transferred/1024/1024), speed = Math.round(progress.speed/1024/1024);
if (!transferred && !speed) return progressCallback({ message: 'Downloading backup' }); // 0M@0MBps looks wrong
progressCallback({ message: `Downloading ${transferred}M@${speed}MBps` });
ps.on('progress', function (progress) {
const transferred = Math.round(progress.transferred/1024/1024), speed = Math.round(progress.speed/1024/1024);
if (!transferred && !speed) return progressCallback({ message: 'Downloading backup' }); // 0M@0MBps looks wrong
progressCallback({ message: `Downloading ${transferred}M@${speed}MBps` });
});
ps.on('error', retryCallback);
ps.on('done', retryCallback);
});
ps.on('error', retryCallback);
ps.on('done', retryCallback);
}, (error) => {
if (error) return reject(error);
resolve();
});
}, callback);
});
}
function upload(backupConfig, remotePath, dataLayout, progressCallback, callback) {
async function upload(backupConfig, remotePath, dataLayout, progressCallback) {
assert.strictEqual(typeof backupConfig, 'object');
assert.strictEqual(typeof remotePath, 'string');
assert.strictEqual(typeof dataLayout, 'object');
assert.strictEqual(typeof progressCallback, 'function');
assert.strictEqual(typeof callback, 'function');
async.retry({ times: 5, interval: 20000 }, function (retryCallback) {
retryCallback = once(retryCallback); // protect again upload() erroring much later after tar stream error
return new Promise((resolve, reject) => {
async.retry({ times: 5, interval: 20000 }, function (retryCallback) {
retryCallback = once(retryCallback); // protect again upload() erroring much later after tar stream error
const tarStream = tarPack(dataLayout, backupConfig.encryption);
const tarStream = tarPack(dataLayout, backupConfig.encryption);
tarStream.on('progress', function (progress) {
const transferred = Math.round(progress.transferred/1024/1024), speed = Math.round(progress.speed/1024/1024);
if (!transferred && !speed) return progressCallback({ message: 'Uploading backup' }); // 0M@0MBps looks wrong
progressCallback({ message: `Uploading backup ${transferred}M@${speed}MBps` });
tarStream.on('progress', function (progress) {
const transferred = Math.round(progress.transferred/1024/1024), speed = Math.round(progress.speed/1024/1024);
if (!transferred && !speed) return progressCallback({ message: 'Uploading backup' }); // 0M@0MBps looks wrong
progressCallback({ message: `Uploading backup ${transferred}M@${speed}MBps` });
});
tarStream.on('error', retryCallback); // already returns BoxError
storage.api(backupConfig.provider).upload(backupConfig, getBackupFilePath(backupConfig, remotePath), tarStream, retryCallback);
}, (error) => {
if (error) return reject(error);
resolve();
});
tarStream.on('error', retryCallback); // already returns BoxError
storage.api(backupConfig.provider).upload(backupConfig, getBackupFilePath(backupConfig, remotePath), tarStream, retryCallback);
}, callback);
});
}