1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/*-
* ============LICENSE_START=======================================================
* feature-simulators
* ================================================================================
* Copyright (C) 2017 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.drools.simulators;
import java.io.IOException;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.BlockingQueue;
import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.Consumes;
import javax.ws.rs.DefaultValue;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Path("/events")
public class DMaaPSimulatorJaxRs {
private static final Map<String, BlockingQueue<String>> queues = new ConcurrentHashMap<>();
private static final Logger logger = LoggerFactory.getLogger(DMaaPSimulatorJaxRs.class);
private static int responseCode = 200;
@GET
@Path("/{topicName}/{consumeGroup}/{consumerId}")
public String subscribe(@DefaultValue("0") @QueryParam("timeout") int timeout, @PathParam("topicName") String topicName,
@Context final HttpServletResponse httpResponse) {
int currentRespCode = responseCode;
httpResponse.setStatus(currentRespCode);
try {
httpResponse.flushBuffer();
} catch (IOException e) {
final Logger logger = LoggerFactory.getLogger(DMaaPSimulatorJaxRs.class);
logger.error("flushBuffer threw: ", e);
return "Got an error";
}
if (currentRespCode < 200 || currentRespCode >= 300)
{
return "You got response code: " + currentRespCode;
}
if (queues.containsKey(topicName)) {
BlockingQueue<String> queue = queues.get(topicName);
String response = "No Data";
try {
response = queue.poll(timeout, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
logger.debug("error in DMaaP simulator", e);
}
if (response == null) {
response = "No Data";
}
return response;
}
else if (timeout > 0) {
try {
Thread.sleep(timeout);
if (queues.containsKey(topicName)) {
BlockingQueue<String> queue = queues.get(topicName);
String response = queue.poll();
if (response == null) {
response = "No Data";
}
return response;
}
} catch (InterruptedException e) {
logger.debug("error in DMaaP simulator", e);
}
}
return "No topic";
}
@POST
@Path("/{topicName}")
@Consumes(MediaType.TEXT_PLAIN)
public String publish(@PathParam("topicName") String topicName, String body) {
if (queues.containsKey(topicName)) {
BlockingQueue<String> queue = queues.get(topicName);
queue.offer(body);
}
else {
BlockingQueue<String> queue = new LinkedBlockingQueue<>();
queue.offer(body);
queues.put(topicName, queue);
}
return "";
}
@POST
@Path("/setStatus")
public String setStatus(@QueryParam("statusCode") int statusCode) {
responseCode = statusCode;
return "Status code set";
}
}
|
