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/*-
* ============LICENSE_START=======================================================
* 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 com.woorea.openstack.base.client;
/*
* Modifications copyright (c) 2017 AT&T Intellectual Property
*/
import java.util.Properties;
import java.util.ServiceLoader;
public class OpenStackClient {
protected String endpoint;
protected OpenStackTokenProvider tokenProvider;
protected static int authenticationRetries = 1;
protected OpenStackClientConnector connector;
protected Properties properties = new Properties();
protected static OpenStackClientConnector defaultConnector;
static {
ServiceLoader<OpenStackClientConnector> connectorLoader;
connectorLoader = ServiceLoader.load(OpenStackClientConnector.class);
for (OpenStackClientConnector clientConnector : connectorLoader) {
defaultConnector = clientConnector;
break;
}
}
public OpenStackClient(String endpoint) {
this.endpoint = endpoint;
this.connector = defaultConnector;
}
public OpenStackClient(String endpoint, OpenStackClientConnector connector) {
this.endpoint = endpoint;
this.connector = (connector == null) ? defaultConnector : connector;
}
public <T> OpenStackResponse request(OpenStackRequest<T> request) {
OpenStackResponseException authException = null;
for (int i = 0; i <= authenticationRetries; i++) {
request.endpoint(endpoint);
if (tokenProvider != null) {
request.header("X-Auth-Token", tokenProvider.getToken());
}
try {
return connector.request(request);
} catch (OpenStackResponseException e) {
if (e.getStatus() != OpenStackResponseStatus.NOT_AUTHORIZED || tokenProvider == null) {
throw e;
}
authException = e;
tokenProvider.expireToken();
}
}
if (null == authException) {
authException = new OpenStackResponseException("Unknown issue", 500);
}
throw authException;
}
public <T> T execute(OpenStackRequest<T> request) {
OpenStackResponse response = request(request);
return (request.returnType() != null && request.returnType() != Void.class)
? response.getEntity(request.returnType())
: null;
}
public void property(String property, String value) {
properties.put(property, value);
}
public void setTokenProvider(OpenStackTokenProvider tokenProvider) {
this.tokenProvider = tokenProvider;
}
public void token(String token) {
setTokenProvider(new OpenStackSimpleTokenProvider(token));
}
public <R> OpenStackRequest<R> get(String path, Class<R> returnType) {
return new OpenStackRequest<>(this, HttpMethod.GET, path, null, returnType);
}
}
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