CLOUDP-323579: Add warning about using independentShardScaling flag (#3987)

Author: blva

internal/cli/clusters/clusters.go

@@ -204,7 +204,7 @@ func isClusterWideScaling(mode string) bool {
 	return strings.EqualFold(mode, clusterWideScalingFlag) || strings.EqualFold(mode, clusterWideScalingResponse)
 }
 
-func detectIsFileISS(fs afero.Fs, filename string) string {
+func detectAutoScalingModeFromFile(fs afero.Fs, filename string) string {
 	// First try to load as a default dedicated cluster in strict mode.
 	// If it succeeds, it is a default dedicated cluster.
 	oldCluster := new(atlasClustersPinned.AdvancedClusterDescription)

internal/cli/clusters/create.go

@@ -492,7 +492,7 @@ func (opts *CreateOpts) validateTier() error {
 
 func (opts *CreateOpts) validateAutoScalingMode() error {
 	if opts.isFlexCluster && !isClusterWideScaling(opts.autoScalingMode) {
-		return fmt.Errorf("flex is incompatible with %s auto scaling mode", opts.autoScalingMode)
+		return fmt.Errorf("flex is incompatible with %s auto scaling mode, set a --tier value different from FLEX, e.g. M10", opts.autoScalingMode)
 	}
 
 	err := validate.AutoScalingMode(opts.autoScalingMode)()
@@ -505,7 +505,7 @@ func (opts *CreateOpts) validateAutoScalingMode() error {
 	}
 
 	if opts.filename != "" {
-		opts.autoScalingMode = detectIsFileISS(opts.fs, opts.filename)
+		opts.autoScalingMode = detectAutoScalingModeFromFile(opts.fs, opts.filename)
 	}
 
 	return nil

internal/cli/clusters/update.go

@@ -318,7 +318,7 @@ func (opts *UpdateOpts) validateTier() error {
 
 func (opts *UpdateOpts) validateAutoScalingMode() error {
 	if opts.filename != "" {
-		opts.autoScalingMode = detectIsFileISS(opts.fs, opts.filename)
+		opts.autoScalingMode = detectAutoScalingModeFromFile(opts.fs, opts.filename)
 	}
 
 	return validate.AutoScalingMode(opts.autoScalingMode)()

internal/validate/validate.go

@@ -139,6 +139,10 @@ func AutoScalingMode(autoScalingMode string) func() error {
 		if !strings.EqualFold(autoScalingMode, clusterWideScaling) && !strings.EqualFold(autoScalingMode, independentShardScaling) {
 			return fmt.Errorf("invalid auto scaling mode: %s. Valid values are %s or %s", autoScalingMode, clusterWideScaling, independentShardScaling)
 		}
+
+		if strings.EqualFold(autoScalingMode, independentShardScaling) {
+			fmt.Fprintf(os.Stderr, "'independentShardScaling' autoscaling cluster detected, use --autoScalingMode independentShardScaling for clusters-related commands when interacting with this cluster")
+		}
 		return nil
 	}
 }