Function check_for_duplicate_zones 

pub fn check_for_duplicate_zones(
    dnszone: &DNSZone,
    zones_store: &Store<DNSZone>,
) -> Option<DuplicateZoneInfo>

Checks if another zone has already claimed the same zone name across any BIND9 instances.

This function prevents multiple teams from creating conflicting zones with the same fully qualified domain name (FQDN). A conflict exists if:

1. Another DNSZone CR has the same spec.zoneName
2. That zone is NOT the same resource (different namespace/name)
3. That zone has at least one instance configured (status.bind9Instances is non-empty)
4. Those instances have status != “Failed”

Arguments

• dnszone - The DNSZone resource to check for duplicates
• zones_store - The reflector store containing all DNSZone resources

Returns

• Some(DuplicateZoneInfo) - If a duplicate zone is detected, with details about conflicts
• None - If no duplicate exists (safe to proceed)

Examples

use tracing::warn;
use bindy::reconcilers::dnszone::check_for_duplicate_zones;

if let Some(duplicate_info) = check_for_duplicate_zones(&dnszone, &zones_store) {
    warn!("Zone {} conflicts with existing zones: {:?}",
          duplicate_info.zone_name, duplicate_info.conflicting_zones);
    // Set status condition to DuplicateZone and stop processing
}