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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019 Nordix Foundation.
* Modifications Copyright (C) 2019 AT&T Intellectual Property.
* ================================================================================
* 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.common.endpoints.http.server;
import java.util.List;
import java.util.Properties;
import org.onap.policy.common.endpoints.http.server.aaf.AafAuthFilter;
import org.onap.policy.common.endpoints.parameters.RestServerParameters;
import org.onap.policy.common.endpoints.properties.PolicyEndPointProperties;
import org.onap.policy.common.gson.GsonMessageBodyHandler;
import org.onap.policy.common.utils.services.ServiceManagerContainer;
/**
* Class to manage life cycle of a rest server.
*
* @author Ram Krishna Verma (ram.krishna.verma@est.tech)
*/
public class RestServer extends ServiceManagerContainer {
/**
* Factory used to access objects. May be overridden by junit tests.
*/
private static Factory factory = new Factory();
private final List<HttpServletServer> servers;
/**
* Constructs the object.
*
* @param restServerParameters the rest server parameters
* @param aafFilter class of object to use to filter AAF requests, or {@code null}
* @param jaxrsProviders classes providing the services
*/
public RestServer(final RestServerParameters restServerParameters, Class<? extends AafAuthFilter> aafFilter,
Class<?>... jaxrsProviders) {
if (jaxrsProviders.length == 0) {
throw new IllegalArgumentException("no providers specified");
}
this.servers = factory.getServerFactory()
.build(getServerProperties(restServerParameters, getProviderClassNames(jaxrsProviders)));
for (HttpServletServer server : this.servers) {
if (aafFilter != null && server.isAaf()) {
server.addFilterClass(null, aafFilter.getName());
}
addAction("REST " + server.getName(), server::start, server::stop);
}
}
/**
* Creates the server properties object using restServerParameters.
*
* @param restServerParameters the rest server parameters
* @param names comma-separated list of classes providing the services
*
* @return the properties object
*/
protected Properties getServerProperties(RestServerParameters restServerParameters, String names) {
final Properties props = new Properties();
props.setProperty(PolicyEndPointProperties.PROPERTY_HTTP_SERVER_SERVICES, restServerParameters.getName());
final String svcpfx =
PolicyEndPointProperties.PROPERTY_HTTP_SERVER_SERVICES + "." + restServerParameters.getName();
props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_HOST_SUFFIX, restServerParameters.getHost());
props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_PORT_SUFFIX,
Integer.toString(restServerParameters.getPort()));
props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_REST_CLASSES_SUFFIX, names);
props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_MANAGED_SUFFIX, "false");
props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_SWAGGER_SUFFIX, "true");
props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_AUTH_USERNAME_SUFFIX,
restServerParameters.getUserName());
props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_AUTH_PASSWORD_SUFFIX,
restServerParameters.getPassword());
props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_HTTPS_SUFFIX,
String.valueOf(restServerParameters.isHttps()));
props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_AAF_SUFFIX,
String.valueOf(restServerParameters.isAaf()));
props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_SERIALIZATION_PROVIDER,
String.join(",", GsonMessageBodyHandler.class.getName(), YamlMessageBodyHandler.class.getName(),
JsonExceptionMapper.class.getName(), YamlExceptionMapper.class.getName()));
return props;
}
/**
* Gets the provider class names, as a comma-separated string.
*
* @param jaxrsProviders classes providing the services
* @return the provider class names
*/
private String getProviderClassNames(Class<?>[] jaxrsProviders) {
StringBuilder names = new StringBuilder();
for (Class<?> prov : jaxrsProviders) {
if (names.length() > 0) {
names.append(',');
}
names.append(prov.getName());
}
return names.toString();
}
@Override
public String toString() {
return "RestServer [servers=" + servers + "]";
}
/**
* Factory used to access objects.
*/
public static class Factory {
public HttpServletServerFactory getServerFactory() {
return HttpServletServerFactoryInstance.getServerFactory();
}
}
}
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