xref: /freebsd/lib/libdevdctl/event_factory.cc (revision dd41de95a84d979615a2ef11df6850622bf6184e)
1 /*-
2  * Copyright (c) 2013 Spectra Logic Corporation
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions, and the following disclaimer,
10  *    without modification.
11  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12  *    substantially similar to the "NO WARRANTY" disclaimer below
13  *    ("Disclaimer") and any redistribution must be conditioned upon
14  *    including a substantially similar Disclaimer requirement for further
15  *    binary redistribution.
16  *
17  * NO WARRANTY
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
27  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28  * POSSIBILITY OF SUCH DAMAGES.
29  *
30  * Authors: Justin T. Gibbs     (Spectra Logic Corporation)
31  */
32 
33 /**
34  * \file event_factory.cc
35  */
36 #include <sys/cdefs.h>
37 #include <sys/time.h>
38 
39 #include <list>
40 #include <map>
41 #include <string>
42 
43 #include "guid.h"
44 #include "event.h"
45 #include "event_factory.h"
46 
47 __FBSDID("$FreeBSD$");
48 
49 /*================================== Macros ==================================*/
50 #define NUM_ELEMENTS(x) (sizeof(x) / sizeof(*x))
51 
52 /*============================ Namespace Control =============================*/
53 namespace DevdCtl
54 {
55 
56 /*=========================== Class Implementations ==========================*/
57 /*------------------------------- EventFactory -------------------------------*/
58 //- Event Public Methods -------------------------------------------------------
59 EventFactory::EventFactory(Event::BuildMethod *defaultBuildMethod)
60  : m_defaultBuildMethod(defaultBuildMethod)
61 {
62 }
63 
64 void
65 EventFactory::UpdateRegistry(Record regEntries[], size_t numEntries)
66 {
67 	EventFactory::Record *rec(regEntries);
68 	EventFactory::Record *lastRec(rec + numEntries - 1);
69 
70 	for (; rec <= lastRec; rec++) {
71 		Key key(rec->m_type, rec->m_subsystem);
72 
73 		if (rec->m_buildMethod == NULL)
74 			m_registry.erase(key);
75 		else
76 			m_registry[key] = rec->m_buildMethod;
77 	}
78 }
79 
80 Event *
81 EventFactory::Build(Event::Type type, NVPairMap &nvpairs,
82 		    const std::string eventString) const
83 {
84 	Key key(type, nvpairs["system"]);
85 	Event::BuildMethod *buildMethod(m_defaultBuildMethod);
86 
87 	Registry::const_iterator foundMethod(m_registry.find(key));
88 	if (foundMethod != m_registry.end())
89 		buildMethod = foundMethod->second;
90 
91 	if (buildMethod == NULL) {
92 		delete &nvpairs;
93 		return (NULL);
94 	}
95 
96 	return (buildMethod(type, nvpairs, eventString));
97 }
98 
99 } // namespace DevdCtl
100