Log the Phase Output In Its Raw Form

[ihcsim]

Change Overview

This PR is a follow-up of a1d4240, where the format.Writer() was updated to skip the logging of all phase outputs encountered by kube.ExecOutput(). That change broke some output artifacts processing code due to the missing phase outputs. This PR adds the phase outputs back to the logs in its raw, unformatted form. The raw form ensures that later output parsing code doesn't have to handle any prefixed log metadata. This change aligns with the previous
implementation in kube.Exec() as seen at:

kanister/pkg/function/kube_exec.go

Lines 94 to 101 in c3ee585

	stdout, stderr, err := kube.Exec(cli, namespace, pod, container, cmd, nil)
	format.LogWithCtx(ctx, pod, container, stdout)
	format.LogWithCtx(ctx, pod, container, stderr)
	if err != nil {
	return nil, err
	}
	out, err := parseLogAndCreateOutput(stdout)

With this change, the phase outputs will be logged in their raw format in the controller stdout. E.g.,

{"ActionSet":"echo-exec-8rtsc","File":"pkg/controller/controller.go","Function":"github.com/kanisterio/kanister/pkg/controller.(*Controller).onUpdateActionSet","Line":245,"Phase":"echoExec-\u003epending","Status":"running","cluster_name":"5d29f04c-5167-4925-9f83-fb8c748f8675","hostname":"kanister-kanister-operator-74cc54d475-fspq5","level":"info","msg":"Updated ActionSet","time":"2022-05-09T20:58:22.693359774Z"}
###Phase-output###: {"key":"bar1","value":"foo1"}
###Phase-output###: {"key":"bar2","value":"foo2"}

Pull request type

Please check the type of change your PR introduces:

• 🚧 Work in Progress
• 🌈 Refactoring (no functional changes, no api changes)
• 🐹 Trivial/Minor
• 🐛 Bugfix
• 🌻 Feature
• 🗺️ Documentation
• 🤖 Test

Test Plan

Added new unit test in pkg/format/format_test.go.

Also tested with these blueprints:

  echoTask:
    outputArtifacts:
      output:
        keyValue:
          bar: "{{ .Phases.echoTask.Output.bar }}"
    phases:
    - func: KubeTask
      name: echoTask
      args:
        namespace: "{{ .Namespace.Name }}"
        image: ghcr.io/kanisterio/kanister-tools:v9.99.9-dev
        command:
        - sh
        - "-c"
        - kando output bar "foo"
  echoExec:
    outputArtifacts:
      output:
        keyValue:
          bar1: "{{ .Phases.echoExec.Output.bar1 }}"
          bar2: "{{ .Phases.echoExec.Output.bar2 }}"
    phases:
    - func: KubeExec
      name: echoExec
      args:
        namespace: default
        pod: timer
        container: timer
        command:
        - sh
        - "-c"
        - |
          kando output bar1 "foo1"
          kando output bar2 "foo2"

• 💪 Manual
• ⚡ Unit test
• 💚 E2E

[github-actions]

Thanks for submitting this pull request 🎉. The team will review it soon and get back to you.

If you haven't already, please take a moment to review our project contributing guideline and Code of Conduct document.