fix: error being silenced during apply

[timonwong]

    defer func() {
        applyErr := u.Apply(ctx, obj)
        // Problem: err is not assigned to return value  
        if err == nil && !apierrors.IsNotFound(applyErr) {
            err = applyErr
        }
    }()

[timonwong]

Nice catch! Although it feels like such issue should really be caught by unit tests. Could you maybe take a stab at adding such case?

sure! i'll then add a case for that

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 79.67%. Comparing base (08ab7fb) to head (abbabcb). Report is 48 commits behind head on main.

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HEAD has 1 upload less than BASE

| Flag | BASE (08ab7fb) | HEAD (abbabcb) | |------|------|------| ||2|1|

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #395 +/- ## ========================================== - Coverage 85.06% 79.67% -5.40% ========================================== Files 19 31 +12 Lines 1346 1958 +612 ========================================== + Hits 1145 1560 +415 - Misses 125 310 +185 - Partials 76 88 +12 ```

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[komish]

Any particular reason why the Apply operation can't be done at the end of the function instead of in a defer clause?

[timonwong]

Any particular reason why the Apply operation can't be done at the end of the function instead of in a defer clause?

Becasue the Apply() is for status update here. When early return (in case of error) from Reconcile loop, you need to set error conditions for your managed CR resources, the defer approch is more ideal than:

1. use goto to handle them in a uniform way
2. call Apply every time before return err