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/*-
* ============LICENSE_START=======================================================
* policy-endpoints
* ================================================================================
* Copyright (C) 2017-2018 AT&T Intellectual Property. 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.policy.common.endpoints.http.client;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Properties;
import org.onap.policy.common.endpoints.http.client.internal.JerseyClient;
import org.onap.policy.common.endpoints.properties.PolicyEndPointProperties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Http Client Factory.
*/
public interface HttpClientFactory {
/**
* Build and http client with the following parameters.
*/
public HttpClient build(String name, boolean https, boolean selfSignedCerts, String hostname, int port,
String baseUrl, String userName, String password, boolean managed)
throws KeyManagementException, NoSuchAlgorithmException;
/**
* Build http client from properties.
*/
public List<HttpClient> build(Properties properties) throws KeyManagementException, NoSuchAlgorithmException;
/**
* Get http client.
*
* @param name the name
* @return the http client
*/
public HttpClient get(String name);
/**
* List of http clients.
*
* @return http clients
*/
public List<HttpClient> inventory();
/**
* Destroy by name.
*
* @param name name
*/
public void destroy(String name);
public void destroy();
}
/**
* HTTP client factory implementation indexed by name.
*/
class IndexedHttpClientFactory implements HttpClientFactory {
/**
* Logger.
*/
private static Logger logger = LoggerFactory.getLogger(IndexedHttpClientFactory.class);
protected HashMap<String, HttpClient> clients = new HashMap<>();
@Override
public synchronized HttpClient build(String name, boolean https, boolean selfSignedCerts, String hostname, int port,
String baseUrl, String userName, String password, boolean managed)
throws KeyManagementException, NoSuchAlgorithmException {
if (clients.containsKey(name)) {
return clients.get(name);
}
JerseyClient client =
new JerseyClient(name, https, selfSignedCerts, hostname, port, baseUrl, userName, password);
if (managed) {
clients.put(name, client);
}
return client;
}
@Override
public synchronized List<HttpClient> build(Properties properties)
throws KeyManagementException, NoSuchAlgorithmException {
ArrayList<HttpClient> clientList = new ArrayList<>();
String clientNames = properties.getProperty(PolicyEndPointProperties.PROPERTY_HTTP_CLIENT_SERVICES);
if (clientNames == null || clientNames.isEmpty()) {
return clientList;
}
List<String> clientNameList = new ArrayList<>(Arrays.asList(clientNames.split("\\s*,\\s*")));
for (String clientName : clientNameList) {
String httpsString = properties.getProperty(PolicyEndPointProperties.PROPERTY_HTTP_CLIENT_SERVICES + "."
+ clientName + PolicyEndPointProperties.PROPERTY_HTTP_HTTPS_SUFFIX);
boolean https = false;
if (httpsString != null && !httpsString.isEmpty()) {
https = Boolean.parseBoolean(httpsString);
}
String hostName = properties.getProperty(PolicyEndPointProperties.PROPERTY_HTTP_CLIENT_SERVICES + "."
+ clientName + PolicyEndPointProperties.PROPERTY_HTTP_HOST_SUFFIX);
String servicePortString = properties.getProperty(PolicyEndPointProperties.PROPERTY_HTTP_CLIENT_SERVICES
+ "." + clientName + PolicyEndPointProperties.PROPERTY_HTTP_PORT_SUFFIX);
int port;
try {
if (servicePortString == null || servicePortString.isEmpty()) {
continue;
}
port = Integer.parseInt(servicePortString);
} catch (NumberFormatException nfe) {
logger.error("http-client-factory: cannot parse port {}", servicePortString, nfe);
continue;
}
String baseUrl = properties.getProperty(PolicyEndPointProperties.PROPERTY_HTTP_CLIENT_SERVICES + "."
+ clientName + PolicyEndPointProperties.PROPERTY_HTTP_URL_SUFFIX);
String userName = properties.getProperty(PolicyEndPointProperties.PROPERTY_HTTP_CLIENT_SERVICES + "."
+ clientName + PolicyEndPointProperties.PROPERTY_HTTP_AUTH_USERNAME_SUFFIX);
String password = properties.getProperty(PolicyEndPointProperties.PROPERTY_HTTP_CLIENT_SERVICES + "."
+ clientName + PolicyEndPointProperties.PROPERTY_HTTP_AUTH_PASSWORD_SUFFIX);
String managedString = properties.getProperty(PolicyEndPointProperties.PROPERTY_HTTP_CLIENT_SERVICES + "."
+ clientName + PolicyEndPointProperties.PROPERTY_MANAGED_SUFFIX);
boolean managed = true;
if (managedString != null && !managedString.isEmpty()) {
managed = Boolean.parseBoolean(managedString);
}
try {
HttpClient client =
this.build(clientName, https, https, hostName, port, baseUrl, userName, password, managed);
clientList.add(client);
} catch (Exception e) {
logger.error("http-client-factory: cannot build client {}", clientName, e);
}
}
return clientList;
}
@Override
public synchronized HttpClient get(String name) {
if (clients.containsKey(name)) {
return clients.get(name);
}
throw new IllegalArgumentException("Http Client " + name + " not found");
}
@Override
public synchronized List<HttpClient> inventory() {
return new ArrayList<>(this.clients.values());
}
@Override
public synchronized void destroy(String name) {
if (!clients.containsKey(name)) {
return;
}
HttpClient client = clients.remove(name);
try {
client.shutdown();
} catch (IllegalStateException e) {
logger.error("http-client-factory: cannot shutdown client {}", client, e);
}
}
@Override
public void destroy() {
List<HttpClient> clientsInventory = this.inventory();
for (HttpClient client : clientsInventory) {
client.shutdown();
}
synchronized (this) {
this.clients.clear();
}
}
}
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