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index.js
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'use strict'
const Hp = require('hemera-plugin')
const Mongodb = require('mongodb')
const ObjectID = Mongodb.ObjectID
const MongoStore = require('./store')
const StorePattern = require('hemera-store/pattern')
const serialize = require('mongodb-extended-json').serialize
const deserialize = require('mongodb-extended-json').deserialize
function hemeraMongoStore(hemera, opts, done) {
let topic = 'mongo-store'
const preResponseHandler = result => {
if (opts.serializeResult === true) {
return serialize(result)
}
return result
}
Mongodb.MongoClient.connect(opts.mongo.url, opts.mongos.options, function(
err,
db
) {
if (err) {
done(err)
return
}
// from mongodb driver
const dbName = db.databaseName
if (opts.useDbAsTopicSuffix) {
topic = `mongo-store.${dbName}`
}
hemera.decorate('mongodb', {
client: Mongodb,
db
})
// Gracefully shutdown
hemera.ext('onClose', (ctx, done) => {
hemera.log.debug('Mongodb connection closed!')
db.close(done)
})
const Joi = hemera.joi
hemera.add(
{
topic,
cmd: 'dropCollection',
collection: Joi.string().required()
},
req =>
db
.collection(req.collection)
.drop()
.catch(() => false)
)
hemera.add(
{
topic,
cmd: 'createCollection',
collection: Joi.string().required()
},
req =>
db
.createCollection(req.collection, req.options)
.then(() => true)
.catch(() => false)
)
hemera.add(StorePattern.create(topic), function(req) {
const collection = db.collection(req.collection)
const store = new MongoStore(collection, opts)
store.ObjectID = ObjectID
req.data = deserialize(req.data)
return store.create(req)
})
hemera.add(StorePattern.update(topic), function(req) {
const collection = db.collection(req.collection)
const store = new MongoStore(collection, opts)
store.ObjectID = ObjectID
req.query = deserialize(req.query)
return store
.update(req, deserialize(req.data))
.then(resp => resp.value)
.then(preResponseHandler)
})
hemera.add(StorePattern.updateById(topic), function(req) {
const collection = db.collection(req.collection)
const store = new MongoStore(collection, opts)
store.ObjectID = ObjectID
return store
.updateById(req, deserialize(req.data))
.then(resp => resp.value)
.then(preResponseHandler)
})
hemera.add(StorePattern.remove(topic), function(req) {
const collection = db.collection(req.collection)
const store = new MongoStore(collection, opts)
store.ObjectID = ObjectID
req.query = deserialize(req.query)
return store.remove(req)
})
hemera.add(StorePattern.removeById(topic), function(req) {
const collection = db.collection(req.collection)
const store = new MongoStore(collection, opts)
store.ObjectID = ObjectID
return store
.removeById(req)
.then(resp => resp.value)
.then(preResponseHandler)
})
hemera.add(StorePattern.replace(topic), function(req) {
const collection = db.collection(req.collection)
const store = new MongoStore(collection, opts)
store.ObjectID = ObjectID
req.query = deserialize(req.query)
return store.replace(req, deserialize(req.data))
})
hemera.add(StorePattern.replaceById(topic), function(req) {
const collection = db.collection(req.collection)
const store = new MongoStore(collection, opts)
store.ObjectID = ObjectID
return store
.replaceById(req, deserialize(req.data))
.then(resp => resp.value)
.then(preResponseHandler)
})
hemera.add(StorePattern.findById(topic), function(req) {
const collection = db.collection(req.collection)
const store = new MongoStore(collection, opts)
store.ObjectID = ObjectID
return store.findById(req).then(preResponseHandler)
})
hemera.add(StorePattern.find(topic), function(req) {
const collection = db.collection(req.collection)
const store = new MongoStore(collection, opts)
store.ObjectID = ObjectID
req.query = deserialize(req.query)
return store.find(req, req.options).then(preResponseHandler)
})
hemera.add(StorePattern.count(topic), function(req) {
const collection = db.collection(req.collection)
const store = new MongoStore(collection, opts)
store.ObjectID = ObjectID
req.query = deserialize(req.query)
return store.count(req, req.options)
})
hemera.add(StorePattern.exists(topic), function(req) {
const collection = db.collection(req.collection)
const store = new MongoStore(collection, opts)
store.ObjectID = ObjectID
req.query = deserialize(req.query)
return store.exists(req, req.options)
})
hemera.log.debug('DB connected!')
done()
})
}
module.exports = Hp(hemeraMongoStore, {
hemera: '>=5.0.0',
name: require('./package.json').name,
dependencies: ['hemera-joi'],
options: {
mongos: {},
serializeResult: false,
mongo: {
url: 'mongodb://localhost:27017/'
},
store: {
replace: { upsert: true }
}
}
})