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/*******************************************************************************
* Copyright 2016-2017 ZTE, Inc. and others.
*
* 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.
******************************************************************************/
package org.onap.msb.apiroute.wrapper.consulextend;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.onap.msb.apiroute.wrapper.consulextend.async.ConsulResponseCallback;
import org.onap.msb.apiroute.wrapper.consulextend.util.Http;
import org.onap.msb.apiroute.wrapper.util.ConfigUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.fasterxml.jackson.core.type.TypeReference;
import com.orbitz.consul.option.CatalogOptions;
import com.orbitz.consul.option.QueryOptions;
/**
* HTTP Client for /v1/catalog/ endpoints.
*/
public class CatalogClient {
private static final Logger LOGGER = LoggerFactory
.getLogger(CatalogClient.class);
private static final TypeReference<HttpEntity> TYPE_SERVICES_MAP = new TypeReference<HttpEntity>() {
};
private static final String CATALOG_URI_8500 = "/v1/catalog";
private static final String CATAlOG_URI_10081 = "/api/catalog/v1";
private static final String GET_SERVICES_URI = "/services";
private static final Http httpClient = Http.getInstance();
private HttpHost targetHost = null;
private String catalogUri = CATAlOG_URI_10081;
CatalogClient(final HttpHost targetHost) {
this.targetHost = targetHost;
if (targetHost.getPort() == 8500) {
catalogUri = CATALOG_URI_8500;
}
}
/**
* Retrieves all services for a given datacenter with
* {@link com.orbitz.consul.option.QueryOptions}.
*
* GET /v1/catalog/services?dc={datacenter}
*
* @param catalogOptions
* Catalog specific options to use.
* @param queryOptions
* The Query Options to use.
* @return A {@link com.orbitz.consul.model.ConsulResponse} containing a map
* of service name to list of tags.
*/
public void getServices(CatalogOptions catalogOptions,
QueryOptions queryOptions,
ConsulResponseCallback<HttpEntity> callback) {
// prepare access path
// path:10081 vs 8500
String path = targetHost.toString() + catalogUri + GET_SERVICES_URI;
// params:wait,index,dc......
String params = Http.optionsFrom(catalogOptions, queryOptions);
// node meta: ns,external,internal.....
String node_meta = ConfigUtil.getInstance().getNodeMetaQueryParam();
// add params
path = (params != null && !params.isEmpty()) ? path += "?" + params
: path;
// add node_meta
if (node_meta != null && !node_meta.isEmpty()) {
path = path.contains("?") ? path +"&"+ node_meta : path + "?"
+ node_meta;
}
// async watch services
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("get all services:" + path);
}
httpClient.asyncGetDelayHandle(path, TYPE_SERVICES_MAP, callback);
}
}
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