2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2019-2020 AT&T Intellectual Property. All rights reserved.
4 * Modifications Copyright (C) 2021 Nordix Foundation.
5 * ================================================================================
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
18 * SPDX-License-Identifier: Apache-2.0
19 * ============LICENSE_END=========================================================
22 package org.onap.policy.pdp.xacml.application.common;
24 import java.net.HttpURLConnection;
25 import javax.ws.rs.core.Response;
26 import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
27 import org.onap.policy.common.endpoints.http.client.HttpClient;
28 import org.onap.policy.common.endpoints.http.client.HttpClientConfigException;
29 import org.onap.policy.common.endpoints.http.client.HttpClientFactoryInstance;
30 import org.onap.policy.common.endpoints.parameters.RestServerParameters;
31 import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
32 import org.onap.policy.models.tosca.authorative.concepts.ToscaServiceTemplate;
33 import org.slf4j.Logger;
34 import org.slf4j.LoggerFactory;
37 * Methods to access policy-api via REST service calls.
39 public class PolicyApiCaller {
40 private static Logger logger = LoggerFactory.getLogger(PolicyApiCaller.class);
42 private static final String POLICY_TYPE_URI = "/policy/api/v1/policytypes/";
43 private static final String POLICY_TYPE_VERSION_URI = "/versions/";
45 private final HttpClient httpClient;
48 * Constructs the object.
50 * @param params target specification
51 * @throws PolicyApiException if an error occurs
53 public PolicyApiCaller(RestServerParameters params) throws PolicyApiException {
54 BusTopicParams busParams = new BusTopicParams();
55 busParams.setClientName("policy-api");
56 busParams.setHostname(params.getHost());
57 busParams.setManaged(false);
58 busParams.setPassword(params.getPassword());
59 busParams.setPort(params.getPort());
60 busParams.setUseHttps(params.isHttps());
61 busParams.setUserName(params.getUserName());
64 httpClient = makeClient(busParams);
65 } catch (HttpClientConfigException e) {
66 throw new PolicyApiException("connection to host: " + busParams.getHostname(), e);
71 * Gets a policy type from policy-api.
73 * @param type policy type of interest
74 * @return the desired policy type
75 * @throws PolicyApiException if an error occurs
77 public ToscaServiceTemplate getPolicyType(ToscaConceptIdentifier type) throws PolicyApiException {
80 Response resp = httpClient
81 .get(POLICY_TYPE_URI + type.getName() + POLICY_TYPE_VERSION_URI + type.getVersion());
83 switch (resp.getStatus()) {
84 case HttpURLConnection.HTTP_OK:
85 return resp.readEntity(ToscaServiceTemplate.class);
86 case HttpURLConnection.HTTP_NOT_FOUND:
87 logger.warn("policy-api not found {}", resp);
88 throw new NotFoundException(type.toString());
90 logger.warn("policy-api request error {}", resp);
91 throw new PolicyApiException(type.toString());
94 } catch (RuntimeException e) {
95 logger.warn("policy-api connection error");
96 throw new PolicyApiException(type.toString(), e);
100 // these methods may be overridden by junit tests
102 protected HttpClient makeClient(BusTopicParams busParams) throws HttpClientConfigException {
103 return HttpClientFactoryInstance.getClientFactory().build(busParams);