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
|
// Copyright (C) 2022 Andrew Ayer
//
// 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.
//
// Except as contained in this notice, the name(s) of the above copyright
// holders shall not be used in advertising or otherwise to promote the
// sale, use or other dealings in this Software without prior written
// authorization.
package listener // import "src.agwa.name/go-listener"
import (
"errors"
"fmt"
"net"
"strings"
)
func openType(listenerType string, params map[string]interface{}, argument string) (net.Listener, error) {
openListener := getOpenListenerFunc(listenerType)
if openListener == nil {
return nil, fmt.Errorf("Unknown listener type: " + listenerType)
}
return openListener(params, argument)
}
// Open a listener with the given string notation
func Open(spec string) (net.Listener, error) {
if strings.Contains(spec, ":") {
fields := strings.SplitN(spec, ":", 2)
listenerType, arg := fields[0], fields[1]
return openType(listenerType, nil, arg)
} else {
return openTCPListener(nil, spec)
}
}
// Open all of the listeners specified in specs (using string notation).
// If any listener fails to open, an error is returned, and none of the
// listeners are left open.
func OpenAll(specs []string) ([]net.Listener, error) {
listeners := []net.Listener{}
for _, spec := range specs {
listener, err := Open(spec)
if err != nil {
CloseAll(listeners)
return nil, fmt.Errorf("%s: %w", spec, err)
}
listeners = append(listeners, listener)
}
return listeners, nil
}
// Experimental: Open a listener with the given JSON notation. Note that numbers in spec
// must be represented using [json.Number].
func OpenJSON(spec map[string]interface{}) (net.Listener, error) {
listenerType, ok := spec["type"].(string)
if !ok {
return nil, errors.New("Listener object does not contain a string type field")
}
return openType(listenerType, spec, "")
}
|
