meteor-space/general

Erick

@ericklind

Okay, the problem is that I could never get the ToDo to actually work. There was no error, but no display either.

Erick

@ericklind

I downloaded it again and this time I'm getting an error for 'unknown package: space:domain'
Thoughts?

Erick

@ericklind

I installed mpg, but nothing seems to have happened. Additional steps?

Darko Mijić

@darko-mijic

Hi @ericklind. I would like to help you with problems with Totos app

Which OS are you using?

This is what I have done to successfully run Todos on Mac:

git clone https://github.com/meteor-space/todos.git
cd todos
mgp
./run.sh

MGP output should look something like this:

EBIZMacPro:todos darkomijic$ mgp
HEAD is now at 8b51727 Merge pull request #41 from meteor-space/fix/app-config-bug

Processing space-base at HEAD
Cleaning up
Copying package
Done...

HEAD is now at f6c2a9c Merge pull request #16 from meteor-space/fix/application-reset

Processing space-messaging at HEAD
Cleaning up
Copying package
Done...

HEAD is now at 8781cca Merge pull request #35 from meteor-space/fix/process-init-via-event-bug

Processing space-event-sourcing at HEAD
Cleaning up
Copying package
Done...

HEAD is now at 9b2ac9c Merge pull request #4 from meteor-space/fix/lock-deps

Processing space-domain at HEAD
Cleaning up
Copying package
Done...

HEAD is now at efd1caa Merge pull request #43 from meteor-space/feature/improve-missing-component-mapping-error

Processing space-flux at HEAD
Cleaning up
Copying package
Done...

HEAD is now at 1978ad9 Merge pull request #16 from meteor-space/feature/contains-array-of-structs

Processing space-testing at HEAD
Cleaning up
Copying package
Done…

Erick

@ericklind

'mgp' is not recognized as an internal or external command,
operable program or batch file.

Darko Mijić

@darko-mijic

Try sudo npm install -g mgp

batch file… seems like you are on Windows?

Let me know if you are using windows and which version, I will try to run the app in a virtual machine

Erick

@ericklind

No sudo here. I'm on windows (work machine)

And I did that already.

Darko Mijić

@darko-mijic

OK, I am installing Meteor in a Windows 7 virtual machine. I will keep you updated. I will install node and mgp and see how it goes.

Darko Mijić

@darko-mijic

@ericklind, have you sent your e-mail to Rhys? Did you join our Slack account?

Adam Desivi

@qejk

Hi @ericklind did you try to pull all required packages manually by using git clone with appropriate naming (git clone uri package-name) to ./packages folder?

they would end up for example: space:base -> space-base, space:event-sourcing -> space-event-sourcing; however please keep in mind that all Space packages are in still in development so its always best to keep track what commit is used by looking on examples like: https://github.com/meteor-space/donations/blob/develop/git-packages.json

Darko Mijić

@darko-mijic

I have isnstalled node and meteor in windows for the first time, i am installing git now so i will keep you posted with runnging a space app on windows

Erick

@ericklind

I sent him my email, but I assume he's probably asleep at the moment since he's probably on Euro time.

I'm in Portland, OR.

Rhys Bartels-Waller

@rhyslbw

@ericklind Invite sent. I’m actually in Australia, but close enough :-)

Darko Mijić

@darko-mijic

@ericklind, I have tested Todos on Windows and everything works fine. All I have done is: installed Meteor, installed node, installed git, installed mgp (using: npm install -g mgp, this is the part you are probably missing since you get mgp is not recognized), cloned todos (git clone https://github.com/meteor-space/todos.git), cd todos, mgp, meteor

BTW @qejk, mgp configuration in todos is fixed to specific commits so there sould be no issues with package versions:
https://github.com/meteor-space/todos/blob/develop/git-packages.json

Erick

@ericklind

@rhyslbw Ah. My tired brain read Austria - and I do know the difference since I lived in Austria for 2 years. :)

Erick

@ericklind

Error: No compatible version found: minimist@'^1.1.1'

@darko-mijic I'm back on my Mac and I cannot get mgp to install.

Darko Mijić

@darko-mijic

@ericklind, when that happens? Can you give me the context and more complete log?

And are you cloning the develop branch?

It is the default branch…

Erick

@ericklind

I followed exactly what you listed above. Once I got to npm install mgp, I got that error.

Darko Mijić

@darko-mijic

OK, so installation of mgp failed.

Can you check your version of node? node -v

Erick

@ericklind

1.2.23

casperan

@casperan

@rhyslbw casperanderseneu@gmail.com slack channel? :)

Darko Mijić

@darko-mijic

That is almost one year old node, I would try to upgrade

Dominik Guzei

@DominikGuzei

@casperan i sent you the slack invite!

casperan

@casperan

cheers

Barry Low

@bearcanrun

Greetings, I would love to join the slack channel too: bearcanrun@gmail.com. Got the todo sample app up and running just fine and really like the structure you guys have going. Learning the event sourcing/CQRS has changed my life. Now that the Meteor 1.3 beta is actually useable in the past few days, I'm curious how the move to that future will be like. Cheers!

Rhys Bartels-Waller

@rhyslbw

Hi @bearcanrun, invite sent. See you over there!

Darko Mijić

@darko-mijic

Space developers are needed on a new and exiting project for a UK company. If you are interested PM me for details.

eoliphan

@eoliphan

Hi, I'm looking to "gradually" incorporate some of the meteor-space cqrs/eventsourcing stuff you guys have. My current need is pretty light on business logic, but more on the side of needing to update multiple collections (projections) based on something happening. I've been looking at the test_application.coffee and unit tests. It seems realtively straightforward, but one thing that isn't clear to me is how to handle aggregate initialization. It's probably due to other frameworks I've used (e.g. Axon for Java). So just to be clear, to send a command to MyAggregate(id:123). I first need to create a new instance of MyAggregate (using the id), then call .handle(command)?

It's just a little confusing to me, as say Axon,node-cqrs, basically have you just register all your aggregates, then send your commands to a gateway/handler, that then is responsible for routing, instantiation, etc.

As this is an existing app, I can't quite leverage all the cool features you guys seem to have in your full stack. So for now I just need to send commands from my existing code.

Darko Mijić

@darko-mijic

@eoliphan: Hi :)
One instance of the Space.eventSourcing.Router is routing domain commands to all aggregate instances of the some type. For example this is the router that is routing command to instances of Todos.TodoList aggregate:
https://github.com/meteor-space/todos/blob/master/packages/domain/source/server/todos/todo-router.js#l3

Router has specialinitializingMessage attribute and that is the command that instantiates new instances of the aggregate:
https://github.com/meteor-space/todos/blob/master/packages/domain/source/server/todos/todo-router.js#l5

Other commands that are routed to the aggregate instances are defined in routeCommands array:
https://github.com/meteor-space/todos/blob/master/packages/domain/source/server/todos/todo-router.js#l7-l13

Please feel free to ask more questions if you have them. Also take a look at this sample app, it can help you understand how everything is wired up:
https://github.com/meteor-space/todos

This diagram can serve as a cheat sheet for understanding complete, non distributed Space event sourcing infrastructure:
https://raw.githubusercontent.com/meteor-space/todos/master/docs/images/todos-model.png

eoliphan

@eoliphan

Ahh, ok so from my previous example, the gateway is your 'router'. I need to tell it which commands it handles for which aggregate (JS needs annotations lol) So.. As I mentioned I'm kinda gradually baking this in. So once I've my events, commands, aggregate and router configured, I invoke a 'handle' or something on an instance of the router?

Ok I guess I should have looked at your pic first lol. So the 'api' fronts the router.. I'll check that out

But I think I understand better now. Have you guys considered any auto-wiring type stuff. As I mentioned the Axon framework uses Java annotations. I've done some small stuff with node-cqrs, they use naming conventions and the directory structure. Not sure how to do something similar in Meteor

Darko Mijić

@darko-mijic

yes, you send a command trough command bus:
https://github.com/meteor-space/todos/blob/master/packages/app/source/shared/apis/todos-api.js#l26

Rhys Bartels-Waller

@rhyslbw

Hey @eoliphan great to see you're checking out the Space ES tools :smile: we coordinate development and provide further assistance where possible in a Slack room, so pm me an email address if you're wanting to take this further. We're 100% committed to providing a solid set of tools for implementing ES/CQRS/DDD in Meteor, and have a growing list of contributors and applications being developed. Would be very helpful to have your input

eoliphan

@eoliphan

@rhyslbw i'd love to. Hey how do I PM you?

Rhys Bartels-Waller

@rhyslbw

@eoliphan click on a profile picture, choose Chat Privately

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