Full support for Devfile 2.x spec

Is your enhancement related to a problem? Please describe.

Currently, devworkspace controller supports only limited of devfile 2.x format. This is epic to track which parts needs to be implemented.

schemaVersion: 2.0.0
metadata:
  name: nodejs-stack
projects:
  - name: project    
    git:
      remotes:                                                           # The only one remote is supported on Che Theia side
        origin: "https://github.com/che-samples/web-nodejs-sample.git"
components:
  - name: editor
    plugin:
      id: eclipse/che-theia/7.1.0
  - name: terminal
    plugin:
      id: eclipse/che-machine-exec-plugin/7.1.0
  - name: typescript-plugin
    plugin:
      id: che-incubator/typescript/1.30.2                                 # patching of plugins configuration are not supported yet
      components:
        - name: "??"
          container:
            memoryLimit: 512Mi
  - name: nodejs
    container:
      image: quay.io/eclipse/che-nodejs10-ubi:nightly
      memoryLimit: 512Mi
      endpoints:
        - name: nodejs
          protocol: http
          targetPort: 3000
      mountSources: true
  - name: cleanup-job
    kubernetes:
      inlined: |
        apiVersion: batch/v1
        kind: Job
        metadata:
          name: pi
        spec:
          template:
            spec:
              containers:
              - name: job
                image: someimage
                command: ["some",  "command", "with", "parameters"]
              restartPolicy: Never
          backoffLimit: 4
  - name: postgres
    kubernetes:                                               # kubernete component is not supported yet
      inlined: |
        kind: Deployment
        metadata:
          name: pi
        spec:
          template:
            spec:
              containers:
              - name: job
                image: someimage
                command: ["some",  "command", "with", "parameters"]
              restartPolicy: Never
          backoffLimit: 4
volumes:                                                    ## volumes are not implemented on that level
  - name: ...
commands:
  - id: download dependencies
    exec:
      component: nodejs
      commandLine: npm install
      workingDir: ${PROJECTS_ROOT}/project/app
      group:
        kind: build                                              # groups are not supported yet
commands:
  - id: cleanup-job
    apply:
      component: cleanup-job 
events:
  postStop:
    - cleanup-job
  preStop: ...
  preStart: ...
  postStart: ...

This issue is not well-described yet. More details will be provided soon.

Devfile 2.0 Feature	Supported	Issue
Plugin mechanism	removed from the spec	https://github.com/devfile/api/pull/333
Parent devfiles	✅	https://github.com/devfile/devworkspace-operator/pull/346
Allow volumes to be shared across components	✅	https://github.com/devfile/devworkspace-operator/pull/237
kubernetes component		https://github.com/eclipse/che/issues/17894
projects	✅
starterProjects
Components sourceMapping	✅
Specify size of volume for component	✅	https://github.com/devfile/devworkspace-operator/pull/827
Environment variables for a specific command	✅
Commands group (application lifecycle)
Out of main pod containers
Stacks/Devfile matching rules	not in the spec yet
Devfile metadata: add a link to an external website	✅
Add lifecycle bindings to bind commands to specific events	pre-start only	https://github.com/devfile/devworkspace-operator/issues/629
Containers endpoints (routes/ingresses)	✅
New type of command to apply a component
Run exec commands as specified user
hotReloadCapable
image component		https://github.com/eclipse/che/issues/21187
outer loop components of type image and kubernetes		https://github.com/eclipse/che/issues/21186

[l0rd]

Closing. We will implement missing parts of the spec when there is a real request.

[AObuchow]

@amisevsk correct me if I am wrong, but it seems like the projects and sourceMapping features are supported and can be updated in the table.

Additionally, kubernetes components will be supported once https://github.com/devfile/devworkspace-operator/pull/961 is merged.