/
post.js
162 lines (142 loc) · 4.79 KB
/
post.js
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var Minio = require('minio')
var bucketExistsOrCreate = function (client, bucket) {
return new Promise((fulfill, reject) => {
client.bucketExists(bucket, err => {
if (err) {
if (err.code != 'NoSuchBucket') {
return reject(`error checking bucket existence: ${err}`)
}
client.makeBucket(bucket, '', err => {
if (err) {
return reject(`error making bucket: ${err}`)
}
fulfill()
})
}
fulfill()
})
})
}
module.exports = function (context, params) {
let op = params["op"]
let post = params["post"]
// BEGIN of workaround:
// importing secret from api - gateway is not supported
// issue tracked at: https://github.com/vmware/dispatch/issues/171
// should replace with the commented code when the issue is addressed
let client = new Minio.Client({
"endPoint": "192.168.99.102",
"port": 31515,
"secure": false,
"accessKey": "AKIAIOSFODNN7EXAMPLE",
"secretKey": "wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY",
})
let bucket = "post-bucket"
// let client = new Minio.Client({
// "endPoint": context.secrets["endPoint"],
// "port": parseInt(context.secrets["port"]),
// "secure": false,
// "accessKey": context.secrets["accessKey"],
// "secretKey": context.secrets["secretKey"]
// })
// let bucket = context.secrets["bucket"]
// END of workaround
console.log(`minio input params ${JSON.stringify(params)}`)
operators = {
"add": addPost,
"update": updatePost,
"list": listPosts,
"get": getPost,
"delete": deletePost
}
if (operators[op] == undefined) {
return { error: "invalid operator" }
}
return new Promise((fulfill, reject) => {
bucketExistsOrCreate(client, bucket).then(() => {
console.log(`bucket existence check passed`)
operators[op](client, bucket, post).then((post) => {
console.log(`${op} post ${JSON.stringify(post)}`)
fulfill({ post: post })
}).catch((err) => {
console.log(err)
reject({ error: err })
})
}).catch(err => {
console.log(err)
reject({ error: err })
})
})
};
var _putPost = function (client, bucket, post) {
return new Promise((fulfill, reject) => {
client.putObject(bucket, post.id, JSON.stringify(post), (err, etag) => {
console.log(`putObject: put post=${JSON.stringify(post)}`)
if (err) {
return reject(`error adding post: ${err}`)
}
return fulfill(post)
})
})
}
var addPost = function (client, bucket, post) {
return new Promise((fulfill, reject) => {
getPost(client, bucket, post.id).then((post, err) => {
return reject(`error adding post: already exists`)
}).catch((err) => {
return fulfill(_putPost(client, bucket, post))
})
})
}
var updatePost = function (client, bucket, post) {
return new Promise((fulfill, reject) => {
getPost(client, bucket, post.id).then((_, err) => {
return fulfill(_putPost(client, bucket, post))
}).catch((err) => {
return reject(`error updating: no such post`)
})
})
}
var getPost = function (client, bucket, postId) {
return new Promise((fulfill, reject) => {
client.getObject(bucket, postId, (err, stream) => {
data = ""
if (err) {
return reject(`error getting object: ${err}`)
}
stream.on('error', err => {
err = `error streaming object: ${err}`
reject(err)
})
stream.on('data', chunk => {
data += chunk
})
stream.on('end', () => {
fulfill(JSON.parse(data))
})
})
})
}
var listPosts = function (client, bucket) {
return new Promise((fulfill, reject) => {
var promises = []
var stream = client.listObjects(bucket, '', false)
.on('data', obj => {
promises.push(getPost(client, bucket, obj.name))
}).on('error', err => {
reject(`error listing posts: ${err}`)
}).on('end', () => {
fulfill(Promise.all(promises))
})
})
}
var deletePost = function (client, bucket, post) {
return new Promise((fulfill, reject) => {
client.removeObject(bucket, post.id, (err) => {
if (err) {
return reject(`error removing post: ${err}`)
}
fulfill(post)
})
})
}