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run parallely

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otofune 2017-11-07 22:08:21 +09:00
parent 6b0db9b877
commit bf7601fa8d
2 changed files with 12 additions and 22 deletions
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1
package.json
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@ -22,6 +22,7 @@
"format": "gulp format"
},
"devDependencies": {
"@prezzemolo/zip": "0.0.3",
"@types/bcryptjs": "2.4.1",
"@types/body-parser": "1.16.7",
"@types/chai": "4.0.4",

33
tools/migration/use-gridfs.js
View file

@ -3,6 +3,7 @@
const { default: db } = require('../../built/db/mongodb')
const { default: DriveFile, getGridFSBucket } = require('../../built/api/models/drive-file')
const { Duplex } = require('stream')
const { default: zip } = require('@prezzemolo/zip')
const writeToGridFS = (bucket, buffer, ...rest) => new Promise((resolve, reject) => {
const writeStream = bucket.openUploadStreamWithId(...rest)
@ -45,30 +46,18 @@ const migrateToGridFS = async (doc) => {
}
async function main() {
let i = 0;
const count = await DriveFile.count({});
const count = await db.get('drive_files').count({});
const dop = Number.parseInt(process.argv[2]) || 5
const iterate = async () => {
if (i == count) return true;
console.log(`${i} / ${count}`);
const doc = (await db.get('drive_files').find({}, { limit: 1, skip: i }))[0]
const res = await migrateToGridFS(doc);
if (!res) {
return false;
} else {
i++
return await iterate();
}
}
const res = await iterate();
if (res) {
return 'ok';
} else {
throw 'something happened';
}
return zip(
1,
async (time) => {
const doc = await DriveFile.find({}, { limit: dop, skip: time * dop })
return Promise.all(doc.map(migrateToGridFS))
},
((count - (count % dop)) / dop) + 1
)
}
main().then(console.dir).catch(console.error)