const AWS = require('aws-sdk'); const s3 = new AWS.S3(); const conf = require('./config.js'); const fs = require('fs'); const path = require('path'); const crypto = require('crypto'); const notLocalHost = conf.notLocalHost; const mozlog = require('./log.js'); const log = mozlog('portal.storage'); const redis = require('redis'); const redis_client = redis.createClient({ host: conf.redis_host }); redis_client.on('error', err => { log.info('Redis:', err); }); if (notLocalHost) { module.exports = { filename: filename, exists: exists, length: awsLength, get: awsGet, set: awsSet, delete: awsDelete, forceDelete: awsForceDelete }; } else { module.exports = { filename: filename, exists: exists, length: localLength, get: localGet, set: localSet, delete: localDelete, forceDelete: localForceDelete }; } function filename(id) { return new Promise((resolve, reject) => { redis_client.hget(id, 'filename', (err, reply) => { if (!err) { resolve(reply); } else { reject(); } }); }); } function exists(id) { return new Promise((resolve, reject) => { redis_client.exists(id, (rediserr, reply) => { resolve(reply === 1); }); }); } function localLength(id) { return new Promise((resolve, reject) => { try { resolve(fs.statSync(path.join(__dirname, '../static', id)).size); } catch (err) { reject(); } }); } function localGet(id) { return fs.createReadStream(path.join(__dirname, '../static', id)); } function localSet(id, file, filename, url) { return new Promise((resolve, reject) => { const fstream = fs.createWriteStream(path.join(__dirname, '../static', id)); file.pipe(fstream); fstream.on('close', () => { const uuid = crypto.randomBytes(10).toString('hex'); redis_client.hmset([id, 'filename', filename, 'delete', uuid]); redis_client.expire(id, 86400000); log.info('localSet:', 'Upload Finished of ' + id); resolve({ uuid: uuid, url: url }); }); fstream.on('error', () => { log.error('localSet:', 'Failed upload of ' + id); reject(); }); }); } function localDelete(id, delete_token) { return new Promise((resolve, reject) => { redis_client.hget(id, 'delete', (err, reply) => { if (!reply || delete_token !== reply) { reject(); } else { redis_client.del(id); resolve(fs.unlinkSync(path.join(__dirname, '../static', id))); } }); }); } function localForceDelete(id) { return new Promise((resolve, reject) => { redis_client.del(id); resolve(fs.unlinkSync(path.join(__dirname, '../static', id))); }); } function awsLength(id) { const params = { Bucket: conf.s3_bucket, Key: id }; return new Promise((resolve, reject) => { s3.headObject(params, function(err, data) { if (!err) { resolve(data.ContentLength); } else { reject(); } }); }); } function awsGet(id) { const params = { Bucket: conf.s3_bucket, Key: id }; try { return s3.getObject(params).createReadStream(); } catch (err) { log.info('GetFailed', 'Get Object from s3 failed.'); return null; } } function awsSet(id, file, filename, url) { const params = { Bucket: conf.s3_bucket, Key: id, Body: file }; return new Promise((resolve, reject) => { s3.upload(params, function(err, _data) { if (err) { log.info('awsUploadError:', err.stack); // an error occurred reject(); } else { const uuid = crypto.randomBytes(10).toString('hex'); redis_client.hmset([id, 'filename', filename, 'delete', uuid]); redis_client.expire(id, 86400000); log.info('awsUploadFinish', 'Upload Finished of ' + filename); resolve({ uuid: uuid, url: url }); } }); }); } function awsDelete(id, delete_token) { return new Promise((resolve, reject) => { redis_client.hget(id, 'delete', (err, reply) => { if (!reply || delete_token !== reply) { reject(); } else { redis_client.del(id); const params = { Bucket: conf.s3_bucket, Key: id }; s3.deleteObject(params, function(err, _data) { err ? reject(err) : resolve(err); }); } }); }); } function awsForceDelete(id) { return new Promise((resolve, reject) => { redis_client.del(id); const params = { Bucket: conf.s3_bucket, Key: id }; s3.deleteObject(params, function(err, _data) { err ? reject(err) : resolve(err); }); }); }