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https://github.com/oam-dev/oam-go-sdk
Simplify building OAM runtime
https://github.com/oam-dev/oam-go-sdk
Last synced: 6 days ago
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Simplify building OAM runtime
- Host: GitHub
- URL: https://github.com/oam-dev/oam-go-sdk
- Owner: oam-dev
- License: apache-2.0
- Created: 2019-12-13T18:32:31.000Z (almost 5 years ago)
- Default Branch: master
- Last Pushed: 2021-03-17T08:29:03.000Z (over 3 years ago)
- Last Synced: 2024-08-17T08:07:22.991Z (3 months ago)
- Language: Go
- Homepage: https://github.com/oam-dev/spec
- Size: 658 KB
- Stars: 85
- Watchers: 10
- Forks: 22
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
- Codeowners: .github/CODEOWNERS
Awesome Lists containing this project
README
# OAM Runtime SDK
**NOTE: This SDK only support v0.1.x release of OAM specification (v1alpha1). For v0.2.x release (v1alpha2) please check [KubeVela](https://github.com/oam-dev/kubevela) and its API lib repo [kubevela-core-api](https://github.com/oam-dev/kubevela-core-api) as dependency.**
The OAM Runtime SDK Project is a collection of go libraries and utility tools for building OAM runtime. With the SDK, we want to streamline and simplify building OAM runtime by achieving:
- Building new and converting to OAM API types easily.
- Reducing duplicate coding work via generating code scallfold and importing go library.
- Hiding low level details like k8s informer and providing high level abstraction to simplify user implementation.
## Concepts
The SDK has the following major concepts that simplifies writing OAM code:
- **Handler**: A handler is an interface that must be user-implemented.
The inputs and outputs are high level abstractions of events and actions.
- **Event**: An event is an encapsulation of change that triggers user handler.
It could be events of k8s or other platforms (e.g. cloud MQ).
- **Action**: An action is an abstraction of declarative description of platform dependent operations.
It separates concerns of high level user intention and low level platform details (e.g. client-go).
In this way we have a modular system that provides reusable and pluggable actions.
The following diagram shows how they work together:
For more concepts in this SDK, please refer to [concepts.md](./doc/concepts.md).
## Getting started
There is an example implementation of OAM runtime using SDK in _pkg/example/framework/main.go_. We recommend reading the code as a starting point.
We could run the code and deploy OAM app by running following commands:
```shell
# turn on go module
export GO111MODULE=on
# install oam crds
make install
# run example
go run pkg/examples/framework/main.go
# deploy OAM component
kubectl apply -f examples/componentschematics.yaml
# deploy OAM app
kubectl apply -f examples/app.yaml
```
This example will create a deployment as `Server` workload.
There is another example which will show you how to build more extensions. Read the [doc](pkg/examples/extendworkload/README.md) for more details.
## Misc.
oam-runtime contains many utilities to help you implement oam runtime easier:
* finalizer
* status check
* spec equal check