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Mongoose debug, pre, post hooks order
const { MongoMemoryServer } = require('mongodb-memory-server');
const mongoose = require('mongoose');
const mongoServer = new MongoMemoryServer({
'instance': {
'dbName': 'temp',
'port': 35555,
}
});
mongoose.set('debug', (collectionName, method, query, queryOptions) => {
console.log(`[${new Date().toISOString()}] debug-mongoose: query (${method}):`, query);
console.log(`[${new Date().toISOString()}] debug-mongoose: queryOptions:`, queryOptions);
if (
queryOptions.hasOwnProperty('profiler')
&& queryOptions.profiler.hasOwnProperty('startTime')
) {
console.log(`[${new Date().toISOString()}] debug-mongoose: query started at ${queryOptions.profiler.startTime.toISOString()}`);
}
if (
queryOptions.hasOwnProperty('profiler')
&& queryOptions.profiler.hasOwnProperty('endTime')
) {
console.log(`[${new Date().toISOString()}] debug-mongoose: query ended at ${queryOptions.profiler.endTime.toISOString()}`);
}
});
mongoose.Promise = Promise;
mongoServer.getConnectionString().then((mongoUri) => {
const mongooseOpts = {
autoReconnect: true,
reconnectTries: Number.MAX_VALUE,
reconnectInterval: 1000,
};
mongoose.connect(mongoUri, mongooseOpts);
mongoose.connection.on('error', (e) => {
if (e.message.code === 'ETIMEDOUT') {
console.log(e);
mongoose.connect(mongoUri, mongooseOpts);
}
console.log(e);
});
mongoose.connection.once('open', () => {
const MySchema = new mongoose.Schema({
'field1': [],
});
const preHook = function() {
this.options.profiler = {
'startTime': new Date(),
};
console.log(`[${new Date().toISOString()}] pre-hook: query started at ${this.options.profiler.startTime.toISOString()}`);
console.log(`[${new Date().toISOString()}] pre-hook: this.options:`, this.options);
};
const postHook = function(result) {
this.options.profiler.endTime = new Date();
console.log(`[${new Date().toISOString()}] post-hook: query ended at ${this.options.profiler.endTime.toISOString()}`);
console.log(`[${new Date().toISOString()}] post-hook: this.options:`, this.options);
}
MySchema.pre('find', preHook);
MySchema.post('find', postHook);
MySchema.pre('aggregate', preHook);
MySchema.post('aggregate', postHook);
const MyModel = mongoose.model('my_collection', MySchema);
/** Find query **/
MyModel.find(
{'foo': 42}
).exec((err, results) => {
if (err) {
throw err;
}
});
/**
[2019-03-14T10:27:55.411Z] pre-hook: query started at 2019-03-14T10:27:55.411Z
[2019-03-14T10:27:55.411Z] pre-hook: this.options: { profiler: { startTime: 2019-03-14T10:27:55.411Z } }
[2019-03-14T10:27:55.414Z] debug-mongoose: query (find): { foo: 42 }
[2019-03-14T10:27:55.415Z] debug-mongoose: queryOptions: { profiler: { startTime: 2019-03-14T10:27:55.411Z },
projection: {} }
[2019-03-14T10:27:55.415Z] debug-mongoose: query started at 2019-03-14T10:27:55.411Z
[2019-03-14T10:27:55.424Z] post-hook: query ended at 2019-03-14T10:27:55.424Z
[2019-03-14T10:27:55.424Z] post-hook: this.options: { profiler:
{ startTime: 2019-03-14T10:27:55.411Z,
endTime: 2019-03-14T10:27:55.424Z } }
**/
/** /Find query **/
/** Aggregate query **/
MyModel.aggregate([
{ $project: { a: 1, b: 1 } },
{ $limit: 1 }
]).exec((err, results) => {
if (err) {
throw err;
}
});
/**
[2019-03-14T10:27:34.742Z] pre-hook: query started at 2019-03-14T10:27:34.742Z
[2019-03-14T10:27:34.742Z] pre-hook: this.options: { profiler: { startTime: 2019-03-14T10:27:34.742Z } }
[2019-03-14T10:27:34.747Z] debug-mongoose: query (aggregate): [ { '$project': { a: 1, b: 1 } }, { '$limit': 1 } ]
[2019-03-14T10:27:34.748Z] debug-mongoose: queryOptions: {}
[2019-03-14T10:27:34.763Z] post-hook: query ended at 2019-03-14T10:27:34.763Z
[2019-03-14T10:27:34.763Z] post-hook: this.options: { profiler:
{ startTime: 2019-03-14T10:27:34.742Z,
endTime: 2019-03-14T10:27:34.763Z } }
**/
/** /Aggregate query **/
});
});
{
"name": "",
"version": "0.0.0",
"license": "UNLICENSED",
"private": false,
"dependencies": {
"mongoose": "^5.4.17",
"mongodb-memory-server": "^3.1.2"
}
}
@C-Duv

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Owner Author

commented Apr 8, 2019

Fixed in mongoose v5.4.22: Automattic/mongoose#7606

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