/
providerNode.go
executable file
·113 lines (102 loc) · 3.43 KB
/
providerNode.go
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
// MIT License
//
// Copyright (c) 2021-2022 Bosch Rexroth AG
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//
package datalayer
//#include <stdbool.h>
//#include <stdlib.h>
//#include <provider_node.h>
import "C"
import "unsafe"
// providerNodeChannelSize size of channels
const providerNodeChannelSize = 5
// ProviderNodeCallback function
type ProviderNodeCallback = func(result Result, data *Variant)
// ProviderNodeEvent event
type ProviderNodeEvent struct {
Address string
Callback ProviderNodeCallback
}
// ProviderNodeEventData event
type ProviderNodeEventData struct {
Address string
Data *Variant
Callback ProviderNodeCallback
}
// ProviderNodeChannels sets the struct.
type ProviderNodeChannels struct {
OnCreate chan ProviderNodeEventData
OnRemove chan ProviderNodeEvent
OnBrowse chan ProviderNodeEvent
OnRead chan ProviderNodeEventData
OnWrite chan ProviderNodeEventData
OnMetadata chan ProviderNodeEvent
Done chan bool
}
// ProviderNode interface for providing data to the system.
type ProviderNode struct {
this C.DLR_PROVIDER_NODE
userdata unsafe.Pointer
channels ProviderNodeChannels
}
// Channels get all channels.
// It returns all channels.
func (n *ProviderNode) Channels() *ProviderNodeChannels {
return &n.channels
}
// NewProviderNode initializes the provider node.
func NewProviderNode() *ProviderNode {
channels := ProviderNodeChannels{
OnCreate: make(chan ProviderNodeEventData, providerNodeChannelSize),
OnRemove: make(chan ProviderNodeEvent, providerNodeChannelSize),
OnBrowse: make(chan ProviderNodeEvent, providerNodeChannelSize),
OnRead: make(chan ProviderNodeEventData, providerNodeChannelSize),
OnWrite: make(chan ProviderNodeEventData, providerNodeChannelSize),
OnMetadata: make(chan ProviderNodeEvent, providerNodeChannelSize),
Done: make(chan bool),
}
userdata := getNodeUserdata(channels)
ptr := C.DLR_providerNodeCreate(getNodeCallbacksC(userdata))
return &ProviderNode{
this: ptr,
userdata: userdata,
channels: channels,
}
}
// DeleteProviderNode destructs the provider node.
func DeleteProviderNode(n *ProviderNode) {
if n == nil {
return
}
if n.this == nil {
return
}
var i int = *(*int)(n.userdata)
nodeUnregister(i)
C.DLR_providerNodeDelete(n.this)
close(n.channels.Done)
close(n.channels.OnCreate)
close(n.channels.OnRemove)
close(n.channels.OnBrowse)
close(n.channels.OnRead)
close(n.channels.OnMetadata)
n.this = nil
}