chronicle_rule_deployment.go.tmpl

// Read the config and update the mask only if set by the user in terraform code

params := []string{"enabled", "alerting", "archived", "run_frequency"}
var existingParams []string

// Populating existingParams with the params that exist
for _, param := range params {
    if _, ok := d.GetOk(param); ok {
        existingParams = append(existingParams, param)
    }
}

// Updating the url to have updateMask
url, err = transport_tpg.AddQueryParams(url, map[string]string{"updateMask": strings.Join(existingParams, ",")})
if err != nil {
    return err
}