2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Copyright (C) 2017 Amdocs
8 * =============================================================================
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
21 * ECOMP is a trademark and service mark of AT&T Intellectual Property.
22 * ============LICENSE_END=========================================================
25 package org.onap.appc.adapter.messaging.dmaap.http;
28 import java.util.ArrayList;
29 import java.util.Collection;
30 import java.util.List;
32 import com.att.eelf.configuration.EELFLogger;
33 import com.att.eelf.configuration.EELFManager;
35 import org.apache.http.HttpEntity;
36 import org.apache.http.NameValuePair;
37 import org.apache.http.client.methods.CloseableHttpResponse;
38 import org.apache.http.client.methods.HttpGet;
39 import org.apache.http.client.utils.URIBuilder;
40 import org.apache.http.message.BasicNameValuePair;
41 import org.apache.http.util.EntityUtils;
42 import org.json.JSONArray;
43 import org.onap.appc.adapter.message.Consumer;
45 public class HttpDmaapConsumerImpl extends CommonHttpClient implements Consumer {
47 private static final EELFLogger LOG = EELFManager.getInstance().getLogger(HttpDmaapConsumerImpl.class);
50 private static final int DEFAULT_TIMEOUT_MS = 15000;
51 private static final int DEFAULT_LIMIT = 1000;
52 private static final String HTTPS_PORT = ":3905";
53 private static final String URL_TEMPLATE = "%s/events/%s/%s/%s";
55 private List<String> urls;
56 private String filter;
58 private boolean useHttps = false;
60 public HttpDmaapConsumerImpl(Collection<String> hosts, String topicName, String consumerName, String consumerId) {
61 this(hosts, topicName, consumerName, consumerId, null);
64 public HttpDmaapConsumerImpl(Collection<String> hosts, String topicName, String consumerName, String consumerId,
66 this(hosts, topicName, consumerName, consumerId, filter, null, null);
69 public HttpDmaapConsumerImpl(Collection<String> hosts, String topicName, String consumerName, String consumerId,
70 String filter, String user, String password) {
71 urls = new ArrayList<String>();
72 for (String host : hosts) {
73 urls.add(String.format(URL_TEMPLATE, formatHostString(host), topicName, consumerName, consumerId));
76 updateCredentials(user, password);
80 public void updateCredentials(String user, String pass) {
81 LOG.debug(String.format("Setting auth to %s for %s", user, this.toString()));
82 this.setBasicAuth(user, pass);
86 public List<String> fetch(int waitMs, int limit) {
87 LOG.debug(String.format("Fetching up to %d records with %dms wait on %s", limit, waitMs, this.toString()));
88 List<String> out = new ArrayList<String>();
90 List<NameValuePair> urlParams = new ArrayList<NameValuePair>();
91 urlParams.add(new BasicNameValuePair("timeout", String.valueOf(waitMs)));
92 urlParams.add(new BasicNameValuePair("limit", String.valueOf(limit)));
94 urlParams.add(new BasicNameValuePair("filter", filter));
97 URIBuilder builder = new URIBuilder(urls.get(0));
98 builder.setParameters(urlParams);
100 URI uri = builder.build();
101 LOG.info(String.format("GET %s", uri));
102 HttpGet request = getReq(uri, waitMs);
103 CloseableHttpResponse response = getClient().execute(request);
105 int httpStatus = response.getStatusLine().getStatusCode();
106 HttpEntity entity = response.getEntity();
107 String body = (entity != null) ? EntityUtils.toString(entity) : null;
109 LOG.debug(String.format("Request to %s completed with status %d and a body size of %s", uri, httpStatus,
110 (body != null ? body.length() : "null")));
113 if (httpStatus == 200 && body != null) {
114 JSONArray json = new JSONArray(body);
115 LOG.info(String.format("Got %d messages from DMaaP", json.length()));
116 for (int i = 0; i < json.length(); i++) {
117 out.add(json.getString(i));
120 LOG.error(String.format("Did not get 200 from DMaaP. Got %d - %s", httpStatus, body));
123 } catch (Exception e) {
124 if (urls.size() > 1) {
125 String failedUrl = urls.remove(0);
127 LOG.debug(String.format("Moving host %s to the end of the pool. New primary host is %s", failedUrl,
130 LOG.error(String.format("Got exception while querying DMaaP. Message: %s", e.getMessage()), e);
138 public List<String> fetch() {
139 return fetch(DEFAULT_TIMEOUT_MS, DEFAULT_LIMIT);
143 public String toString() {
144 String hostStr = (urls == null || urls.isEmpty()) ? "N/A" : urls.get(0);
145 return String.format("Consumer listening to [%s]", hostStr);
149 public void useHttps(boolean yes) {
153 private void sleep(int ms) {
154 LOG.info(String.format("Sleeping for %ds after failed request", ms / 1000));
157 } catch (InterruptedException e1) {
158 LOG.error("Interrupted while sleeping");
163 public void close() {