/**
* Copyright 2005-2016 Red Hat, Inc.
*
* Red Hat licenses this file to you under the Apache License, version
* 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package io.fabric8.karaf.core.properties.function;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.atomic.AtomicReference;
import io.fabric8.kubernetes.client.KubernetesClient;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.ConfigurationPolicy;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.apache.felix.scr.annotations.ReferencePolicy;
import org.apache.felix.scr.annotations.Service;
@Component(
immediate = true,
policy = ConfigurationPolicy.IGNORE,
createPid = false
)
@Reference(
name = "kubernetesClient",
cardinality = ReferenceCardinality.MANDATORY_UNARY,
policy = ReferencePolicy.STATIC,
referenceInterface = KubernetesClient.class
)
@Property(name = "function.name", value = KubernetesPropertiesFunction.FUNCTION_NAME)
@Service(PropertiesFunction.class)
public class KubernetesPropertiesFunction implements PropertiesFunction {
public static final String FUNCTION_NAME = "k8s";
private final AtomicReference<KubernetesClient> kubernetesClient;
private final Map<String, KubernetesSupport.Resource> kubernetesResources;
public KubernetesPropertiesFunction() {
this.kubernetesClient = new AtomicReference<>();
this.kubernetesResources = new HashMap<>();
this.kubernetesResources.put("secret", KubernetesSupport.secretsResource());
this.kubernetesResources.put("map", KubernetesSupport.configMapResource());
this.kubernetesResources.put("configmap", KubernetesSupport.configMapResource());
}
// ******************
// Implementation
// ******************
@Override
public String getName() {
return FUNCTION_NAME;
}
@Override
public String apply(String remainder) {
String value = null;
final String[] items = remainder.split(":");
final KubernetesClient client = kubernetesClient.get();
if (client != null && items.length == 2) {
String[] tokens = items[1].split("/");
if (tokens.length == 2) {
KubernetesSupport.Resource res = kubernetesResources.get(items[0]);
if (res != null) {
value = res.get(client, tokens[0], tokens[1]);
}
}
}
return value;
}
// ******************
// References
// ******************
protected void bindKubernetesClient(KubernetesClient kubernetesClient) {
this.kubernetesClient.set(kubernetesClient);
}
protected void unbindKubernetesClient(KubernetesClient kubernetesClient) {
this.kubernetesClient.compareAndSet(kubernetesClient, null);
}
}