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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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 org.apache.camel.component.kubernetes.cloud;

import java.util.Collections;
import java.util.List;

import org.apache.camel.CamelContext;
import org.apache.camel.RuntimeCamelException;
import org.apache.camel.cloud.ServiceDefinition;
import org.apache.camel.component.kubernetes.KubernetesConfiguration;
import org.apache.camel.impl.cloud.DefaultServiceDefinition;

public class KubernetesEnvServiceDiscovery extends KubernetesServiceDiscovery {
    public KubernetesEnvServiceDiscovery(KubernetesConfiguration configuration) {
        super(configuration);
    }

    @Override
    public List getServices(String name) {
        try {
            final CamelContext ctx = getCamelContext();
            final String host = ctx.resolvePropertyPlaceholders("{{service.host:" + name + "}}");
            final String num = ctx.resolvePropertyPlaceholders("{{service.port:" + name + "}}");
            final int port = ctx.getTypeConverter().tryConvertTo(int.class, num);

            return Collections.singletonList(new DefaultServiceDefinition(name, host, port));
        } catch (IllegalArgumentException e) {
            return Collections.emptyList();
        } catch (Exception e) {
            throw new RuntimeCamelException(e);
        }
    }

    @Override
    public String toString() {
        return "KubernetesEnvServiceDiscovery";
    }
}