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React on Modified Amount of Min Instances #443

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80 changes: 80 additions & 0 deletions .../org/eclipse/theia/cloud/operator/handler/appdef/EagerStartAppDefinitionAddedHandler.java
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Original file line number Diff line number Diff line change
Expand Up @@ -163,6 +163,86 @@ public boolean appDefinitionAdded(AppDefinition appDefinition, String correlatio
return true;
}

@Override
public boolean appDefinitionModified(AppDefinition appDefinition, String correlationId) {
AppDefinitionSpec spec = appDefinition.getSpec();
LOGGER.info(formatLogMessage(correlationId, "Handling " + spec));

String appDefinitionResourceName = appDefinition.getMetadata().getName();
String appDefinitionResourceUID = appDefinition.getMetadata().getUid();
int instances = spec.getMinInstances();

/* Create ingress if not existing */
if (!TheiaCloudIngressUtil.checkForExistingIngressAndAddOwnerReferencesIfMissing(client.kubernetes(),
client.namespace(), appDefinition, correlationId)) {
LOGGER.error(formatLogMessage(correlationId,
"Expected ingress '" + spec.getIngressname() + "' for app definition '" + appDefinitionResourceName
+ "' does not exist. Abort handling app definition."));
return false;
} else {
LOGGER.trace(formatLogMessage(correlationId, "Ingress available already"));
}

/* Get existing services for this app definition */
List<Service> existingServices = K8sUtil.getExistingServices(client.kubernetes(), client.namespace(),
appDefinitionResourceName, appDefinitionResourceUID);

/* Compute missing services */
Set<Integer> missingServiceIds = TheiaCloudServiceUtil.computeIdsOfMissingServices(appDefinition, correlationId,
instances, existingServices);

Map<String, String> labelsToAdd = new HashMap<String, String>();

/* Create missing services for this app definition */
for (int instance : missingServiceIds) {
createAndApplyService(client.kubernetes(), client.namespace(), correlationId, appDefinitionResourceName,
appDefinitionResourceUID, instance, appDefinition, arguments.isUseKeycloak(), labelsToAdd);
}

if (arguments.isUseKeycloak()) {
/* Get existing configmaps for this app definition */
List<ConfigMap> existingConfigMaps = K8sUtil.getExistingConfigMaps(client.kubernetes(), client.namespace(),
appDefinitionResourceName, appDefinitionResourceUID);
List<ConfigMap> existingProxyConfigMaps = existingConfigMaps.stream()//
.filter(configmap -> LABEL_VALUE_PROXY.equals(configmap.getMetadata().getLabels().get(LABEL_KEY)))//
.collect(Collectors.toList());
List<ConfigMap> existingEmailsConfigMaps = existingConfigMaps.stream()//
.filter(configmap -> LABEL_VALUE_EMAILS.equals(configmap.getMetadata().getLabels().get(LABEL_KEY)))//
.collect(Collectors.toList());

/* Compute missing configmaps */
Set<Integer> missingProxyIds = TheiaCloudConfigMapUtil.computeIdsOfMissingProxyConfigMaps(appDefinition,
correlationId, instances, existingProxyConfigMaps);
Set<Integer> missingEmailIds = TheiaCloudConfigMapUtil.computeIdsOfMissingEmailConfigMaps(appDefinition,
correlationId, instances, existingEmailsConfigMaps);

/* Create missing configmaps for this app definition */
for (int instance : missingProxyIds) {
createAndApplyProxyConfigMap(client.kubernetes(), client.namespace(), correlationId,
appDefinitionResourceName, appDefinitionResourceUID, instance, appDefinition, labelsToAdd);
}
for (int instance : missingEmailIds) {
createAndApplyEmailConfigMap(client.kubernetes(), client.namespace(), correlationId,
appDefinitionResourceName, appDefinitionResourceUID, instance, appDefinition, labelsToAdd);
}
}

/* Get existing deployments for this app definition */
List<Deployment> existingDeployments = K8sUtil.getExistingDeployments(client.kubernetes(), client.namespace(),
appDefinitionResourceName, appDefinitionResourceUID);

/* Compute missing deployments */
Set<Integer> missingDeploymentIds = TheiaCloudDeploymentUtil.computeIdsOfMissingDeployments(appDefinition,
correlationId, instances, existingDeployments);

/* Create missing deployments for this app definition */
for (int instance : missingDeploymentIds) {
createAndApplyDeployment(client.kubernetes(), client.namespace(), correlationId, appDefinitionResourceName,
appDefinitionResourceUID, instance, appDefinition, arguments.isUseKeycloak(), labelsToAdd);
}
return true;
}

protected void createAndApplyService(NamespacedKubernetesClient client, String namespace, String correlationId,
String appDefinitionResourceName, String appDefinitionResourceUID, int instance,
AppDefinition appDefinition, boolean useOAuth2Proxy, Map<String, String> labelsToAdd) {
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