WIP: Add support for ConfigMap Gone status

References:
* ManageIQ/kubeclient#452 (comment)
* fabric8io/kubernetes-client#1800 (comment)
* kubernetes/kubernetes#25151 (comment)
* kubernetes/kubernetes#35068 (comment)
* https://github.com/kubernetes/kubernetes/blob/dde6e8e7465468c32642659cb708a5cc922add64/test/e2e/apimachinery/protocol.go#L68-L75
* https://kubernetes.io/docs/reference/using-api/api-concepts/#410-gone-responses
* https://kubernetes.io/docs/reference/using-api/api-concepts/#efficient-detection-of-changes
* https://www.baeldung.com/java-kubernetes-watch#1-resource-versions

kubernetes-discovery-client/src/main/java/io/micronaut/kubernetes/client/v1/KubernetesObject.java

@@ -26,8 +26,23 @@
 @Introspected
 public abstract class KubernetesObject {
 
+ private String kind;
  private Metadata metadata;
 
+ /**
+ * @return The Kind
+ */
+ public String getKind() {
+ return kind;
+ }
+
+ /**
+ * @param kind The Kind
+ */
+ public void setKind(String kind) {
+ this.kind = kind;
+ }
+
  /**
  * @return The Metadata
  */

kubernetes-discovery-client/src/main/java/io/micronaut/kubernetes/client/v1/configmaps/ConfigMap.java

@@ -31,6 +31,10 @@
 public class ConfigMap extends KubernetesObject {
 
  private Map<String, String> data = new HashMap<>();
+ private String status;
+ private String message;
+ private String reason;
+ private int code;
 
  /**
  * @return A Map where the key is the file name, and the value is a string with all the properties
@@ -46,11 +50,72 @@ public void setData(Map<String, String> data) {
  this.data = data;
  }
 
+ /**
+ * @return The Status
+ */
+ public String getStatus() {
+ return status;
+ }
+
+ /**
+ * @param status The Status
+ */
+ public void setStatus(String status) {
+ this.status = status;
+ }
+
+ /**
+ * @return The Message
+ */
+ public String getMessage() {
+ return message;
+ }
+
+ /**
+ * @param message The Message
+ */
+ public void setMessage(String message) {
+ this.message = message;
+ }
+
+ /**
+ * @return The Reason
+ */
+ public String getReason() {
+ return reason;
+ }
+
+ /**
+ * @param reason The Reason
+ */
+
+ public void setReason(String reason) {
+ this.reason = reason;
+ }
+
+ /**
+ * @return The Code
+ */
+ public int getCode() {
+ return code;
+ }
+
+ /**
+ * @param code The Code
+ */
+ public void setCode(int code) {
+ this.code = code;
+ }
+
  @Override
  public String toString() {
  return "ConfigMap{" +
  "metadata=" + getMetadata() +
  ", data=" + data +
+ ", status='" + status + '\'' +
+ ", message='" + message + '\'' +
+ ", reason='" + reason + '\'' +
+ ", code=" + code +
  '}';
  }
 }

kubernetes-discovery-client/src/main/java/io/micronaut/kubernetes/configuration/KubernetesConfigMapWatcher.java

@@ -39,6 +39,7 @@
 
 import static io.micronaut.kubernetes.configuration.KubernetesConfigurationClient.KUBERNETES_CONFIG_MAP_NAME_SUFFIX;
 import static io.micronaut.kubernetes.util.KubernetesUtils.computePodLabelSelector;
+import static java.net.HttpURLConnection.HTTP_GONE;
 
 /**
  * Watches for ConfigMap changes and makes the appropriate changes to the {@link Environment} by adding or removing
@@ -94,9 +95,11 @@ public void onApplicationEvent(ServiceReadyEvent event) {
  LOG.trace("Received ConfigMap watch event: {}", e);
  }
  })
- .doOnError(throwable -> LOG.error("Error while watching ConfigMap events", throwable))
+ .onErrorReturn(throwable -> {
+ LOG.error("Error while watching ConfigMap events", throwable);
+ return new ConfigMapWatchEvent(ConfigMapWatchEvent.EventType.ERROR);
+ })
  .subscribeOn(Schedulers.from(this.executorService))
- .onErrorReturnItem(new ConfigMapWatchEvent(ConfigMapWatchEvent.EventType.ERROR))
  .subscribe(this::processEvent);
  }
 
@@ -178,6 +181,18 @@ private void processConfigMapDeleted(ConfigMap configMap) {
 
  private void processConfigMapErrored(ConfigMapWatchEvent event) {
  LOG.error("Kubernetes API returned an error for a ConfigMap watch event: {}", event.toString());
+ if (event.getObject().getCode() == HTTP_GONE) {
+ /*"kind":"Status",
+ "apiVersion":"v1",
+ "metadata":{},
+ "status":"Failure",
+ "message":"too old resource version: 1770726893 (1771132522)",
+ "reason":"Expired",
+ "code":410}}*/
+ this.environment.getPropertySources().forEach(src -> LOG.warn("WTF: src={}", src));
+ this.environment = environment.refresh();
+ onApplicationEvent(null);
+ }
  }
 
  private boolean passesIncludesExcludesLabelsFilters(ConfigMap configMap) {