odo logs: add option to limit component logs to a particular container

[rm3l]

/kind user-story

User Story

As an odo user, I want to limit the output of my component logs to a particular container, so that I can focus on that container and debug.

This is feedback received during the "Sprint 220" review.

Acceptance Criteria

• odo logs should have a -c, --container option that returns the logs of this particular container
• It should error out if there is no matching container
• It should be possible to use this option along with the --follow flag

Links

• Related Epic (mandatory): [Epic] Address user feedback #5848

/kind user-story

[dharmit]

Before doing this, we first need to figure out a way to show the user the list of containers and segregate them to Dev mode or Deploy mode.

/area log

[valaparthvi]

We've looked into several ways to approach this issue:

1. odo logs --list-containers that lists containers before user can decide which container, and then run odo logs --container
2. odo logs interactive mode that gives a list of containers to choose from
3. odo logs --container [--pods]- odo logs should show what pod the container belongs to if there are multiple containers with the same name.
4. provide completion for container names when running odo logs --container

We are inclined towards approach 3.

There might some changes to odo logs from #5872, we'll wait until that is in.
/status blocked

[dharmit]

We've looked into several ways to approach this issue:

1. odo logs --list-containers that lists containers before user can decide which container, and then run odo logs --container

2. odo logs interactive mode that gives a list of containers to choose from

3. odo logs --container [--pods]- odo logs should show what pod the container belongs to if there are multiple containers with the same name.

4. provide completion for container names when running odo logs --container

IMO, it should be odo list containers.

[valaparthvi]

We'll wait until we're GA since this is not a blocking feature.

[matthewhembree]

Accommodating logs from init containers would be helpful as well. Use cases might be for troubleshooting database migrations or Hashicorp Vault agent.

[github-actions]

A friendly reminder that this issue had no activity for 90 days. Stale issues will be closed after an additional 30 days of inactivity.

[github-actions]

A friendly reminder that this issue had no activity for 90 days. Stale issues will be closed after an additional 30 days of inactivity.