@m3o/services NPM

Services

This is the home of the Micro Services Platform aka (M3O).

Overview

This repository serves as the home for the M3O platform and related services. Those invited to develop the platform will be added to the team and have the ability to create and modify services here. We'll build additional value add services here to be consumed by users of the platform.

Dependencies

We depend on Micro using the "platform" profile. It runs on kubernetes with of the resources below:

Etcd
NATS
CockroachDB

Design

All services are Micro services written using the Micro framework without exception.

Services speak to each other via RPC
Messages are used for async eventing
Infrastructure usage occurs only through Micro

Naming

Directories are the domain boundary for a specific concern e.g user, account, payment. They act as the alias for the otherwise fully qualified domain name "go.micro.service.alias". Services should follow this naming convention and focus on single word naming where possible.

Structure

Services should be generated using the micro new command using the alias e.g micro new account. The internal structure is defined by our new template generator. Extending this should follow a further convention as follows:

user/
    api/	# api routes
    web/	# web html
    client/	# generated clients
    service/	# core service types
    handler/	# request handlers
    subscriber/	# message subscribers
    proto/	# proto generated code
    main.go	# service main
    user.mu	# mu definition
    README.md	# readme

Testing

We use https://github.com/maxbrunsfeld/counterfeiter for generating test doubles for our services. These can then be imported in to other tests and used instead of real implementations.

We can then write tests which call the endpoints (contract testing) and verify that they do the right thing by checking call counts on the test doubles.

By convention, we generate fakes in the same directory tree as for the real proto implementation. For example, customers service is defined at customers/proto so the test double is defined in customers/proto/fakes.

Example generate command

counterfeiter -o proto/fakes/fake_usage_service.go proto UsageService

Contribution

Please sign-off contributions with DCO sign-off

git commit --signoff 'Signed-off-by: John Doe <john@example.com>`

License

See LICENSE which makes use of Polyform Strict. For commercial use please email contact@m3o.com.

@m3o/m3o-node

@everything-registry/sub-chunk-569

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