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/*-
 * ============LICENSE_START=======================================================
 * org.onap.dcaegen2.collectors.ves
 * ================================================================================
 * Copyright (C) 2020 Nokia. All rights reserved.
 * ================================================================================
 * Licensed 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.
 * ============LICENSE_END=========================================================
 */
package org.onap.dcae.configuration.cbs;

import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.CbsClientConfiguration;
import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.ImmutableCbsClientConfiguration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

class CbsClientConfigurationResolver {

    private static final Logger LOGGER = LoggerFactory.getLogger(CbsClientConfigurationResolver.class);

    private final String defaultProtocol = "http";
    private final String defaultHostname = "config-binding-service";
    private final int defaultPort = 10000;
    private final String defaultAppName = "dcae-ves-collector";

    CbsClientConfiguration resolveCbsClientConfiguration() {
        try {
            return CbsClientConfiguration.fromEnvironment();
        } catch (Exception e) {
            LOGGER.warn("Failed resolving CBS client configuration from system environments: " + e);
        }
        LOGGER.info("Falling back to use default CBS client configuration properties");
        return getFallbackConfiguration();
    }

    private ImmutableCbsClientConfiguration getFallbackConfiguration() {
        LOGGER.info("Falling back to use default CBS client configuration");
        return createCbsClientConfiguration(defaultProtocol, defaultHostname, defaultAppName, defaultPort);
    }

    private ImmutableCbsClientConfiguration createCbsClientConfiguration(String protocol, String hostname,
        String appName, Integer port) {
        return ImmutableCbsClientConfiguration.builder()
            .protocol(protocol)
            .hostname(hostname)
            .port(port)
            .appName(appName)
            .build();
    }
}