const S3 = require('aws-sdk/clients/s3') const stream = require('stream') const Promise = require('bluebird') const pipeline = Promise.promisify(stream.pipeline) const _ = require('lodash') const pageHelper = require('../../../helpers/page.js') /* global WIKI */ /** * Deduce the file path given the `page` object and the object's key to the page's path. */ const getFilePath = (page, pathKey) => { const fileName = `${page[pathKey]}.${pageHelper.getFileExtension(page.contentType)}` const withLocaleCode = WIKI.config.lang.namespacing && WIKI.config.lang.code !== page.localeCode return withLocaleCode ? `${page.localeCode}/${fileName}` : fileName } /** * Can be used with S3 compatible storage. */ module.exports = class S3CompatibleStorage { constructor(storageName) { this.storageName = storageName } async activated() { // not used } async deactivated() { // not used } async init() { WIKI.logger.info(`(STORAGE/${this.storageName}) Initializing...`) const { accessKeyId, secretAccessKey, region, bucket, endpoint } = this.config this.s3 = new S3({ accessKeyId, secretAccessKey, region, endpoint, params: { Bucket: bucket }, apiVersions: '2006-03-01' }) // determine if a bucket exists and you have permission to access it await this.s3.headBucket().promise() WIKI.logger.info(`(STORAGE/${this.storageName}) Initialization completed.`) } async created(page) { WIKI.logger.info(`(STORAGE/${this.storageName}) Creating file ${page.path}...`) const filePath = getFilePath(page, 'path') await this.s3.putObject({ Key: filePath, Body: page.injectMetadata() }).promise() } async updated(page) { WIKI.logger.info(`(STORAGE/${this.storageName}) Updating file ${page.path}...`) const filePath = getFilePath(page, 'path') await this.s3.putObject({ Key: filePath, Body: page.injectMetadata() }).promise() } async deleted(page) { WIKI.logger.info(`(STORAGE/${this.storageName}) Deleting file ${page.path}...`) const filePath = getFilePath(page, 'path') await this.s3.deleteObject({ Key: filePath }).promise() } async renamed(page) { WIKI.logger.info(`(STORAGE/${this.storageName}) Renaming file ${page.path} to ${page.destinationPath}...`) let sourceFilePath = getFilePath(page, 'path') let destinationFilePath = getFilePath(page, 'destinationPath') if (WIKI.config.lang.namespacing) { if (WIKI.config.lang.code !== page.localeCode) { sourceFilePath = `${page.localeCode}/${sourceFilePath}` } if (WIKI.config.lang.code !== page.destinationLocaleCode) { destinationFilePath = `${page.destinationLocaleCode}/${destinationFilePath}` } } await this.s3.copyObject({ CopySource: sourceFilePath, Key: destinationFilePath }).promise() await this.s3.deleteObject({ Key: sourceFilePath }).promise() } /** * ASSET UPLOAD * * @param {Object} asset Asset to upload */ async assetUploaded (asset) { WIKI.logger.info(`(STORAGE/${this.storageName}) Creating new file ${asset.path}...`) await this.s3.putObject({ Key: asset.path, Body: asset.data }).promise() } /** * ASSET DELETE * * @param {Object} asset Asset to delete */ async assetDeleted (asset) { WIKI.logger.info(`(STORAGE/${this.storageName}) Deleting file ${asset.path}...`) await this.s3.deleteObject({ Key: asset.path }).promise() } /** * ASSET RENAME * * @param {Object} asset Asset to rename */ async assetRenamed (asset) { WIKI.logger.info(`(STORAGE/${this.storageName}) Renaming file from ${asset.path} to ${asset.destinationPath}...`) await this.s3.copyObject({ CopySource: asset.path, Key: asset.destinationPath }).promise() await this.s3.deleteObject({ Key: asset.path }).promise() } /** * HANDLERS */ async exportAll() { WIKI.logger.info(`(STORAGE/${this.storageName}) Exporting all content to the cloud provider...`) // -> Pages await pipeline( WIKI.models.knex.column('path', 'localeCode', 'title', 'description', 'contentType', 'content', 'isPublished', 'updatedAt').select().from('pages').where({ isPrivate: false }).stream(), new stream.Transform({ objectMode: true, transform: async (page, enc, cb) => { const filePath = getFilePath(page, 'path') WIKI.logger.info(`(STORAGE/${this.storageName}) Adding page ${filePath}...`) await this.s3.putObject({ Key: filePath, Body: pageHelper.injectPageMetadata(page) }).promise() cb() } }) ) // -> Assets const assetFolders = await WIKI.models.assetFolders.getAllPaths() await pipeline( WIKI.models.knex.column('filename', 'folderId', 'data').select().from('assets').join('assetData', 'assets.id', '=', 'assetData.id').stream(), new stream.Transform({ objectMode: true, transform: async (asset, enc, cb) => { const filename = (asset.folderId && asset.folderId > 0) ? `${_.get(assetFolders, asset.folderId)}/${asset.filename}` : asset.filename WIKI.logger.info(`(STORAGE/${this.storageName}) Adding asset ${filename}...`) await this.s3.putObject({ Key: filename, Body: asset.data }).promise() cb() } }) ) WIKI.logger.info(`(STORAGE/${this.storageName}) All content has been pushed to the cloud provider.`) } }