-
Notifications
You must be signed in to change notification settings - Fork 915
/
publisher.cpp
149 lines (129 loc) · 4.15 KB
/
publisher.cpp
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
141
142
143
144
145
146
147
148
149
/*
* Copyright (C) 2009, Willow Garage, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * 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.
* * Neither the names of Stanford University or Willow Garage, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* 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 "ros/publisher.h"
#include "ros/publication.h"
#include "ros/node_handle.h"
#include "ros/topic_manager.h"
namespace ros
{
Publisher::Impl::Impl() : unadvertised_(false) { }
Publisher::Impl::~Impl()
{
ROS_DEBUG("Publisher on '%s' deregistering callbacks.", topic_.c_str());
unadvertise();
}
bool Publisher::Impl::isValid() const
{
return !unadvertised_;
}
void Publisher::Impl::unadvertise()
{
if (!unadvertised_)
{
unadvertised_ = true;
TopicManager::instance()->unadvertise(topic_, callbacks_);
node_handle_.reset();
}
}
Publisher::Publisher(const std::string& topic, const std::string& md5sum, const std::string& datatype, const NodeHandle& node_handle, const SubscriberCallbacksPtr& callbacks)
: impl_(new Impl)
{
impl_->topic_ = topic;
impl_->md5sum_ = md5sum;
impl_->datatype_ = datatype;
impl_->node_handle_ = NodeHandlePtr(new NodeHandle(node_handle));
impl_->callbacks_ = callbacks;
}
Publisher::Publisher(const Publisher& rhs)
{
impl_ = rhs.impl_;
}
Publisher::~Publisher()
{
}
void Publisher::publish(const boost::function<SerializedMessage(void)>& serfunc, SerializedMessage& m) const
{
if (!impl_)
{
ROS_ASSERT_MSG(false, "Call to publish() on an invalid Publisher (topic [%s])", impl_->topic_.c_str());
return;
}
if (!impl_->isValid())
{
ROS_ASSERT_MSG(false, "Call to publish() on an invalid Publisher (topic [%s])", impl_->topic_.c_str());
return;
}
TopicManager::instance()->publish(impl_->topic_, serfunc, m);
}
void Publisher::incrementSequence() const
{
if (impl_ && impl_->isValid())
{
TopicManager::instance()->incrementSequence(impl_->topic_);
}
}
void Publisher::shutdown()
{
if (impl_)
{
impl_->unadvertise();
impl_.reset();
}
}
std::string Publisher::getTopic() const
{
if (impl_)
{
return impl_->topic_;
}
return std::string();
}
uint32_t Publisher::getNumSubscribers() const
{
if (impl_ && impl_->isValid())
{
return TopicManager::instance()->getNumSubscribers(impl_->topic_);
}
return 0;
}
bool Publisher::isLatched() const {
PublicationPtr publication_ptr;
if (impl_ && impl_->isValid()) {
publication_ptr =
TopicManager::instance()->lookupPublication(impl_->topic_);
} else {
ROS_ASSERT_MSG(false, "Call to isLatched() on an invalid Publisher");
throw ros::Exception("Call to isLatched() on an invalid Publisher");
}
if (publication_ptr) {
return publication_ptr->isLatched();
} else {
ROS_ASSERT_MSG(false, "Call to isLatched() on an invalid Publisher");
throw ros::Exception("Call to isLatched() on an invalid Publisher");
}
}
} // namespace ros