getDatastore.manager issue in sails-mongo@2.1.0

[makeitcount]

Node version: 16.20.0
Sails version (sails): 1.5.8
ORM hook version (sails-hook-orm): 4.0.2
Sockets hook version (sails-hook-sockets): 2.0.4
Grunt hook version (sails-hook-grunt): 5.0.0
DB adapter & version (e.g. sails-mongo): 2.1.0

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After recent upgrade of sails-mongo, following query stated failing without any warning/error and never returns the control back to the callback.

This works on sails-mongo@2.0.0 (and node v14) but not not on sails-mongo@2.1.0 (and node v16)

MyModel.getDatastore().manager.collection(MyModel.tableName).aggregate(pipelineArray).toArray(function (errA, applications) { 
     //code never reaches here 
})

[sailsbot]

@makeitcount Thanks for posting! We'll take a look as soon as possible.

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---

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[makeitcount]

@DominusKelvin can you please review your PR for sails-mongo@2.1.0 once again? I just commented on the code which might have caused this issue (I believe so because I debugged that using breakpoint but I don't have any idea how to fix that)

[DominusKelvin]

@DominusKelvin can you please review your PR for sails-mongo@2.1.0 once again? I just commented on the code which might have caused this issue (I believe so because I debugged that using breakpoint but I don't have any idea how to fix that)

Great catch. I'll have a look.

[DominusKelvin]

@DominusKelvin can you please review your PR for sails-mongo@2.1.0 once again? I just commented on the code which might have caused this issue (I believe so because I debugged that using breakpoint but I don't have any idea how to fix that)

Can you try making it a promise because the underlying Mongo instance is no longer callback based but promise based. Also read the upgrade guide as it discusses the changes needed in userland code 👇🏾

https://blog.sailscasts.com/sails-mongo-v2-1-0

[makeitcount]

https://blog.sailscasts.com/sails-mongo-v2-1-0

I do not fully understand the change suggested here. The other exec callbacks are working fine for me. What is this iife change suggested here? How should the above code I mentioned should look like?

[DominusKelvin]

https://blog.sailscasts.com/sails-mongo-v2-1-0

I do not fully understand the change suggested here. The other exec callbacks are working fine for me. What is this iife change suggested here? How should the above code I mentioned should look like?

Well .exec is Sails/Waterline code. .toArray is not. It's the underlying adapter so it needs to be a promise so .toArray().then().catch()

The IIFE is meant to reduce the change you need but if converting to promise works for you then that's fine.

[makeitcount]

Well .exec is Sails/Waterline code. .toArray is not. It's the underlying adapter so it needs to be a promise so .toArray().then().catch()

Ok. So if I replace .toArray() with .exec(function(err, results){}), that will also work, right?
If this is possible then it would be easier to keep things consistent across the codebase i.e. callback only.

[DominusKelvin]

Well .exec is Sails/Waterline code. .toArray is not. It's the underlying adapter so it needs to be a promise so .toArray().then().catch()

Ok. So if I replace .toArray() with .exec(function(err, results){}), that will also work, right?

If this is possible then it would be easier to keep things consistent across the codebase i.e. callback only.

Yeah let me know if that works for you. General rule is if you are using the underlying MongoDB driver instance, you have to move to promises. If you have been using .exec on the other hand then no need to change anything. Let me know if that works for you then I can close this issue.

[DominusKelvin]

Hey @makeitcount I'll be closing this issue as resolved since from our conversations you can resolve this in userland via a couple of suggested options. Cheers.