public void Update(WatchEventType eventType, V1Ingress ingress)
{
if (ingress is null)
{
throw new ArgumentNullException(nameof(ingress));
}
var serviceNames = ImmutableList <string> .Empty;
if (eventType == WatchEventType.Added || eventType == WatchEventType.Modified)
{
// If the ingress exists, list out the related services
var spec = ingress.Spec;
var defaultBackend = spec?.DefaultBackend;
var defaultService = defaultBackend?.Service;
if (!string.IsNullOrEmpty(defaultService?.Name))
{
serviceNames = serviceNames.Add(defaultService.Name);
}
foreach (var rule in spec.Rules ?? Enumerable.Empty <V1IngressRule>())
{
var http = rule.Http;
foreach (var path in http.Paths ?? Enumerable.Empty <V1HTTPIngressPath>())
{
var backend = path.Backend;
var service = backend.Service;
if (!serviceNames.Contains(service.Name))
{
serviceNames = serviceNames.Add(service.Name);
}
}
}
}
var ingressName = ingress.Name();
lock (_sync)
{
var serviceNamesPrevious = ImmutableList <string> .Empty;
if (eventType == WatchEventType.Added || eventType == WatchEventType.Modified)
{
// If the ingress exists then remember details
_ingressData[ingressName] = new IngressData(ingress);
if (_ingressToServiceNames.TryGetValue(ingressName, out serviceNamesPrevious))
{
_ingressToServiceNames[ingressName] = serviceNames;
}
else
{
serviceNamesPrevious = ImmutableList <string> .Empty;
_ingressToServiceNames.Add(ingressName, serviceNames);
}
}
else if (eventType == WatchEventType.Deleted)
{
// otherwise clear out details
_ingressData.Remove(ingressName);
if (_ingressToServiceNames.TryGetValue(ingressName, out serviceNamesPrevious))
{
_ingressToServiceNames.Remove(ingressName);
}
}
// update cross-reference for new ingress-to-services linkage not previously known
foreach (var serviceName in serviceNames)
{
if (!serviceNamesPrevious.Contains(serviceName))
{
if (_serviceToIngressNames.TryGetValue(serviceName, out var ingressNamesPrevious))
{
_serviceToIngressNames[serviceName] = _serviceToIngressNames[serviceName].Add(ingressName);
}
else
{
_serviceToIngressNames.Add(serviceName, ImmutableList <string> .Empty.Add(ingressName));
}
}
}
// remove cross-reference for previous ingress-to-services linkage no longer present
foreach (var serviceName in serviceNamesPrevious)
{
if (!serviceNames.Contains(serviceName))
{
_serviceToIngressNames[serviceName] = _serviceToIngressNames[serviceName].Remove(ingressName);
}
}
}
}
public bool IngressExists(V1Ingress ingress)
{
return(_ingressData.ContainsKey(ingress.Name()));
}
