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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 java.util.List;
import org.apache.http.HttpHost;
import org.onap.msb.apiroute.wrapper.consulextend.async.ConsulResponseCallback;
import org.onap.msb.apiroute.wrapper.consulextend.model.health.ServiceHealth;
import org.onap.msb.apiroute.wrapper.consulextend.util.Http;
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/health/ endpoints.
*/
public class HealthClient {
private final static Logger LOGGER = LoggerFactory
.getLogger(HealthClient.class);
private static final TypeReference<List<ServiceHealth>> TYPE_SERVICE_HEALTH_LIST = new TypeReference<List<ServiceHealth>>() {
};
private static final String HEALTH_URI_10081 = "/api/health/v1";
private static final String HEALTH_URI_8500 = "/v1/health";
private static final String GET_HEALTH_SERVICE_URI = "/service";
// private static final String GET_HEALTH_SERVICE_URI = "/v1/health/service";
// private static final String GET_HEALTH_SERVICE_URI = "/api/health/v1/service";
private final static Http httpClient = Http.getInstance();
private HttpHost targetHost = null;
private String healthUri = HEALTH_URI_10081;
HealthClient(final HttpHost targetHost) {
this.targetHost = targetHost;
if(targetHost.getPort() == 8500)
{
healthUri = HEALTH_URI_8500;
}
}
/**
* Asynchronously retrieves the healthchecks for all healthy service
* instances in a given datacenter with
* {@link com.orbitz.consul.option.QueryOptions}.
*
* GET /v1/health/service/{service}?dc={datacenter}&passing
*
* Experimental.
*
* @param service
* The service to query.
* @param catalogOptions
* The catalog specific options to use.
* @param queryOptions
* The Query Options to use.
* @param callback
* Callback implemented by callee to handle results.
*/
public void getHealthyServiceInstances(String service,
CatalogOptions catalogOptions, QueryOptions queryOptions,
ConsulResponseCallback<List<ServiceHealth>> callback) {
// prepare access path
String path = targetHost.toString() + healthUri + GET_HEALTH_SERVICE_URI + "/"+ service;
String params = Http.optionsFrom(catalogOptions, queryOptions);
path = (params != null && !params.isEmpty()) ? path += "?"
+ params : path; //query all nodes without filter for health
// async watch
// LOGGER.info("get health paasing service:" + path);
httpClient.asyncGetDelayHandle(path, TYPE_SERVICE_HEALTH_LIST, callback);
}
/**
* Asynchronously retrieves the healthchecks for all nodes in a given
* datacenter with {@link com.orbitz.consul.option.QueryOptions}.
*
* GET /v1/health/service/{service}?dc={datacenter}
*
* Experimental.
*
* @param service
* The service to query.
* @param catalogOptions
* The catalog specific options to use.
* @param queryOptions
* The Query Options to use.
* @param callback
* Callback implemented by callee to handle results.
*/
public void getAllServiceInstances(String service,
CatalogOptions catalogOptions, QueryOptions queryOptions,
ConsulResponseCallback<List<ServiceHealth>> callback) {
// prepare access path
String path = targetHost.toString() + healthUri + GET_HEALTH_SERVICE_URI + "/"+ service;
String params = Http.optionsFrom(catalogOptions, queryOptions);
path = (params != null && !params.isEmpty()) ? path += "?" + params
: path;
// async watch
// LOGGER.debug("get service:" + path);
httpClient.asyncGetDelayHandle(path, TYPE_SERVICE_HEALTH_LIST, callback);
}
}
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