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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/*
* librdkafka - Apache Kafka C library
*
* Copyright (c) 2016, Magnus Edenhill
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <iostream>
#include <cstring>
#include <cstdlib>
#include "testcpp.h"
/**
* Verify that yield() works.
*
* In two iterations, do:
* - Register a DR callback that counts the number of messages and
* calls yield() in iteration 1, and not in iteration 2.
* - Produce 100 messages quickly (to ensure same-batch)
* - Verify that only one DR callback is triggered per poll() call
* in iteration 1, and all messages in iteration 2.
*/
class DrCb0065 : public RdKafka::DeliveryReportCb {
public:
int cnt; // dr messages seen
bool do_yield; // whether to yield for each message or not
RdKafka::Producer *p;
DrCb0065(bool yield) : cnt(0), do_yield(yield), p(NULL) {
}
void dr_cb(RdKafka::Message &message) {
if (message.err())
Test::Fail("DR: message failed: " + RdKafka::err2str(message.err()));
Test::Say(3, tostr() << "DR #" << cnt << "\n");
cnt++;
if (do_yield)
p->yield();
}
};
static void do_test_producer(bool do_yield) {
int msgcnt = 100;
std::string errstr;
RdKafka::ErrorCode err;
std::string topic = Test::mk_topic_name("0065_yield", 1);
/*
* Create Producer
*/
RdKafka::Conf *conf;
Test::conf_init(&conf, NULL, 10);
DrCb0065 dr(do_yield);
conf->set("dr_cb", &dr, errstr);
/* Make sure messages are produced in batches of 100 */
conf->set("batch.num.messages", "100", errstr);
conf->set("linger.ms", "10000", errstr);
RdKafka::Producer *p = RdKafka::Producer::create(conf, errstr);
if (!p)
Test::Fail("Failed to create producer: " + errstr);
delete conf;
dr.p = p;
Test::Say(tostr() << (do_yield ? "Yield: " : "Dont Yield: ") << "Producing "
<< msgcnt << " messages to " << topic << "\n");
for (int i = 0; i < msgcnt; i++) {
err = p->produce(topic, 0, RdKafka::Producer::RK_MSG_COPY, (void *)"hi", 2,
NULL, 0, 0, NULL);
if (err)
Test::Fail("produce() failed: " + RdKafka::err2str(err));
}
int exp_msgs_per_poll = do_yield ? 1 : msgcnt;
while (dr.cnt < msgcnt) {
int pre_cnt = dr.cnt;
p->poll(1000);
int this_dr_cnt = dr.cnt - pre_cnt;
if (this_dr_cnt == 0) {
/* Other callbacks may cause poll() to return early
* before DRs are available, ignore these. */
Test::Say(3, "Zero DRs called, ignoring\n");
continue;
}
if (this_dr_cnt != exp_msgs_per_poll)
Test::Fail(tostr() << "Expected " << exp_msgs_per_poll
<< " DRs per poll() call, got " << this_dr_cnt);
else
Test::Say(3, tostr() << dr.cnt << "/" << msgcnt << "\n");
}
if (dr.cnt != msgcnt)
Test::Fail(tostr() << "Expected " << msgcnt << " DRs, got " << dr.cnt);
Test::Say(tostr() << (do_yield ? "Yield: " : "Dont Yield: ")
<< "Success: " << dr.cnt << " DRs received in batches of "
<< exp_msgs_per_poll << "\n");
delete p;
}
extern "C" {
int main_0065_yield(int argc, char **argv) {
do_test_producer(1 /*yield*/);
do_test_producer(0 /*dont yield*/);
return 0;
}
}
|
