-
Notifications
You must be signed in to change notification settings - Fork 105
/
sig_router.go
76 lines (59 loc) · 1.76 KB
/
sig_router.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
package types
import (
fmt "fmt"
"github.com/axelarnetwork/axelar-core/utils"
"github.com/axelarnetwork/axelar-core/x/multisig/exported"
"github.com/axelarnetwork/utils/funcs"
)
// SigRouter implements a sig router based on module name
type SigRouter interface {
AddHandler(module string, handler exported.SigHandler) SigRouter
HasHandler(module string) bool
GetHandler(module string) exported.SigHandler
Seal()
}
var _ SigRouter = (*router)(nil)
type router struct {
handlers map[string]exported.SigHandler
sealed bool
}
// NewSigRouter is the contructor for sig router
func NewSigRouter() SigRouter {
return &router{
handlers: make(map[string]exported.SigHandler),
}
}
// AddHandler registers a new handler for the given module; panics if the
// router is sealed, if the module is invalid, or if the module has been
// registered already.
func (r *router) AddHandler(module string, handler exported.SigHandler) SigRouter {
if handler == nil {
panic("nil handler received")
}
if r.sealed {
panic("router already sealed")
}
funcs.MustNoErr(utils.ValidateString(module))
if r.HasHandler(module) {
panic(fmt.Sprintf("handler for module %s already registered", module))
}
r.handlers[module] = handler
return r
}
// HasHandler returns true if the router has a handler registered for the
// given module
func (r router) HasHandler(module string) bool {
_, ok := r.handlers[module]
return ok
}
// GetHandler returns the handler for the given module.
func (r router) GetHandler(module string) exported.SigHandler {
if !r.HasHandler(module) {
panic(fmt.Sprintf("no handler for module %s registered", module))
}
return r.handlers[module]
}
// Seal prevents additional handlers from being added to the router
func (r *router) Seal() {
r.sealed = true
}