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_MixinRemoteWriter.mjs
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_MixinRemoteWriter.mjs
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import { createLogger } from '@xen-orchestra/log'
import { join } from 'node:path'
import assert from 'node:assert'
import { formatFilenameDate } from '../../_filenameDate.mjs'
import { getVmBackupDir } from '../../_getVmBackupDir.mjs'
import { HealthCheckVmBackup } from '../../HealthCheckVmBackup.mjs'
import { ImportVmBackup } from '../../ImportVmBackup.mjs'
import { Task } from '../../Task.mjs'
import * as MergeWorker from '../../merge-worker/index.mjs'
const { info, warn } = createLogger('xo:backups:MixinBackupWriter')
export const MixinRemoteWriter = (BaseClass = Object) =>
class MixinRemoteWriter extends BaseClass {
#lock
constructor({ remoteId, adapter, ...rest }) {
super(rest)
this._adapter = adapter
this._remoteId = remoteId
this._vmBackupDir = getVmBackupDir(rest.vmUuid)
}
async _cleanVm(options) {
try {
return await Task.run({ name: 'clean-vm' }, () => {
return this._adapter.cleanVm(this._vmBackupDir, {
...options,
fixMetadata: true,
logInfo: info,
logWarn: (message, data) => {
warn(message, data)
Task.warning(message, data)
},
lock: false,
mergeBlockConcurrency: this._config.mergeBlockConcurrency,
})
})
} catch (error) {
warn(error)
return {}
}
}
async beforeBackup() {
const { handler } = this._adapter
const vmBackupDir = this._vmBackupDir
await handler.mktree(vmBackupDir)
this.#lock = await handler.lock(vmBackupDir)
}
async afterBackup() {
const { disableMergeWorker } = this._config
// merge worker only compatible with local remotes
const { handler } = this._adapter
const willMergeInWorker = !disableMergeWorker && typeof handler.getRealPath === 'function'
const { merge } = await this._cleanVm({ remove: true, merge: !willMergeInWorker })
await this.#lock.dispose()
if (merge && willMergeInWorker) {
const taskFile =
join(MergeWorker.CLEAN_VM_QUEUE, formatFilenameDate(new Date())) +
'-' +
// add a random suffix to avoid collision in case multiple tasks are created at the same second
Math.random().toString(36).slice(2)
await handler.outputFile(taskFile, this._vmUuid)
const remotePath = handler.getRealPath()
await MergeWorker.run(remotePath)
}
}
healthCheck() {
const sr = this._healthCheckSr
assert.notStrictEqual(sr, undefined, 'SR should be defined before making a health check')
assert.notStrictEqual(
this._metadataFileName,
undefined,
'Metadata file name should be defined before making a health check'
)
return Task.run(
{
name: 'health check',
},
async () => {
const xapi = sr.$xapi
const srUuid = sr.uuid
const adapter = this._adapter
const metadata = await adapter.readVmBackupMetadata(this._metadataFileName)
const { id: restoredId } = await new ImportVmBackup({
adapter,
metadata,
srUuid,
xapi,
settings: {
additionnalVmTag: 'xo:no-bak=Health Check',
},
}).run()
const restoredVm = xapi.getObject(restoredId)
try {
await new HealthCheckVmBackup({
restoredVm,
xapi,
}).run()
} finally {
await xapi.VM_destroy(restoredVm.$ref)
}
}
)
}
_isAlreadyTransferred(timestamp) {
const vmUuid = this._vmUuid
const adapter = this._adapter
const backupDir = getVmBackupDir(vmUuid)
try {
const actualMetadata = JSON.parse(
adapter._handler.readFile(`${backupDir}/${formatFilenameDate(timestamp)}.json`)
)
return actualMetadata
} catch (error) {}
}
}