xref: /illumos-gate/usr/src/cmd/dtrace/test/tst/common/json/tst.usdt.d (revision f497f9fe231e0e400f339c84a7d80c4aae2ac4d5)
1 /*
2  * This file and its contents are supplied under the terms of the
3  * Common Development and Distribution License ("CDDL"), version 1.0.
4  * You may only use this file in accordance with the terms of version
5  * 1.0 of the CDDL.
6  *
7  * A full copy of the text of the CDDL should have accompanied this
8  * source.  A copy of the CDDL is also available via the Internet at
9  * http://www.illumos.org/license/CDDL.
10  */
11 
12 /*
13  * Copyright (c) 2012, Joyent, Inc.  All rights reserved.
14  */
15 
16 #pragma D option strsize=4k
17 #pragma D option quiet
18 #pragma D option destructive
19 
20 /*
21  * This test reads a JSON string from a USDT probe, roughly simulating the
22  * primary motivating use case for the json() subroutine: filtering
23  * JSON-formatted log messages from a logging subsystem like node-bunyan.
24  */
25 
26 pid$1:a.out:waiting:entry
27 {
28 	this->value = (int *)alloca(sizeof (int));
29 	*this->value = 1;
30 	copyout(this->value, arg0, sizeof (int));
31 }
32 
33 bunyan*$1:::log-*
34 {
35 	this->j = copyinstr(arg0);
36 }
37 
38 bunyan*$1:::log-*
39 /json(this->j, "finished") == NULL && json(this->j, "action") != "ignore"/
40 {
41 	this->index = strtoll(json(this->j, "index"));
42 	this->size = json(this->j, "sizes[2]");
43 	this->odd = json(this->j, "facts.odd");
44 	this->even = json(this->j, "facts.even");
45 	printf("[%d] sz %s odd %s even %s\n", this->index, this->size,
46 	    this->odd, this->even);
47 }
48 
49 bunyan*$1:::log-*
50 /json(this->j, "finished") != NULL/
51 {
52 	printf("FINISHED!\n");
53 	exit(0);
54 }
55 
56 tick-10s
57 {
58 	printf("ERROR: Timed out before finish message!\n");
59 	exit(1);
60 }
61 
62 ERROR
63 {
64 	exit(1);
65 }
66