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feat(helm): add ability for --dry-run to do lookup functions

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When a helm command is run with the --dry-run flag, it will try to connect to the cluster
if the value is 'server' to be able to render lookup functions.
Closes #8137

Signed-off-by: Tapas Kapadia <tapaskapadia10@gmail.com>
This commit is contained in:
Tapas Kapadia
2023-01-30 17:04:10 -06:00
parent 25ac62e153
commit f9e54b6079
5 changed files with 10 additions and 13 deletions
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8
pkg/action/action.go
View File

@@ -120,11 +120,9 @@ func (cfg *Configuration) renderResources(ch *chart.Chart, values chartutil.Valu
var files map[string]string
var err2 error
// A `helm template` should not talk to the remote cluster. However, commands
// with the flag `--dry-run-option` with the value of false, none, or sever
// or with the flag `--dry-run` with the value of false should try to interact with the cluster.
// It may break in interesting and exotic ways because other data (e.g. discovery)
// is mocked.
// A `helm template` should not talk to the remote cluster. However, commands with the flag
//`--dry-run` with the value of `false`, `none`, or `server` should try to interact with the cluster.
// It may break in interesting and exotic ways because other data (e.g. discovery) is mocked.
if interactWithRemote && cfg.RESTClientGetter != nil {
restConfig, err := cfg.RESTClientGetter.ToRESTConfig()
if err != nil {

3
pkg/action/install.go
View File

@@ -204,13 +204,12 @@ func (i *Install) RunWithContext(ctx context.Context, chrt *chart.Chart, vals ma
return nil, err
}
// determine dry run behavior
// Determine dry run behavior
if i.DryRun || i.DryRunOption == "client" || i.DryRunOption == "server" || i.DryRunOption == "true" {
i.DryRun = true
}
var interactWithRemote bool
// `helm template` is the only command that Install.APIVersions field will not be nil.
if !i.DryRun || i.DryRunOption == "server" {
interactWithRemote = true
}

4
pkg/action/upgrade.go
View File

@@ -141,7 +141,7 @@ func (u *Upgrade) RunWithContext(ctx context.Context, name string, chart *chart.
return nil, errors.Errorf("release name is invalid: %s", name)
}
// determine dry run behavior
// Determine dry run behavior
if u.DryRun || u.DryRunOption == "client" || u.DryRunOption == "server" || u.DryRunOption == "true" {
u.DryRun = true
}
@@ -239,7 +239,7 @@ func (u *Upgrade) prepareUpgrade(name string, chart *chart.Chart, vals map[strin
return nil, nil, err
}
// determine whether or not to interact with remote
// Determine whether or not to interact with remote
var interactWithRemote bool
if !u.DryRun || u.DryRunOption == "server" {
interactWithRemote = true