2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2019-2021 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.models.tosca.authorative.concepts.ToscaConceptIdentifier;
31 import org.onap.policy.models.tosca.authorative.concepts.ToscaServiceTemplate;
32 import org.slf4j.Logger;
33 import org.slf4j.LoggerFactory;
36 * Methods to access policy-api via REST service calls.
38 public class PolicyApiCaller {
39 private static Logger logger = LoggerFactory.getLogger(PolicyApiCaller.class);
41 private static final String POLICY_TYPE_URI = "/policy/api/v1/policytypes/";
42 private static final String POLICY_TYPE_VERSION_URI = "/versions/";
44 private final HttpClient httpClient;
47 * Constructs the object.
49 * @param params target specification
50 * @throws PolicyApiException if an error occurs
52 public PolicyApiCaller(BusTopicParams params) throws PolicyApiException {
54 params.setClientName("policy-api");
55 httpClient = makeClient(params);
56 } catch (HttpClientConfigException e) {
57 throw new PolicyApiException("connection to host: " + params.getHostname(), e);
62 * Gets a policy type from policy-api.
64 * @param type policy type of interest
65 * @return the desired policy type
66 * @throws PolicyApiException if an error occurs
68 public ToscaServiceTemplate getPolicyType(ToscaConceptIdentifier type) throws PolicyApiException {
71 Response resp = httpClient
72 .get(POLICY_TYPE_URI + type.getName() + POLICY_TYPE_VERSION_URI + type.getVersion());
74 switch (resp.getStatus()) {
75 case HttpURLConnection.HTTP_OK:
76 return resp.readEntity(ToscaServiceTemplate.class);
77 case HttpURLConnection.HTTP_NOT_FOUND:
78 logger.warn("policy-api not found {}", resp);
79 throw new NotFoundException(type.toString());
81 logger.warn("policy-api request error {}", resp);
82 throw new PolicyApiException(type.toString());
85 } catch (RuntimeException e) {
86 logger.warn("policy-api connection error, client info: {} ", httpClient);
87 throw new PolicyApiException(type.toString(), e);
91 // these methods may be overridden by junit tests
93 protected HttpClient makeClient(BusTopicParams busParams) throws HttpClientConfigException {
94 return HttpClientFactoryInstance.getClientFactory().build(busParams);