/
actor.go
80 lines (62 loc) · 1.67 KB
/
actor.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
package actor
import (
"fmt"
"github.com/bahner/go-ma-actor/entity"
"github.com/bahner/go-ma/did"
"github.com/bahner/go-ma/did/doc"
"github.com/bahner/go-ma/key/set"
"github.com/bahner/go-ma/msg"
)
const ENVELOPES_BUFFERSIZE = 100
// An actor is just an entity with a keyset.
type Actor struct {
Entity *entity.Entity
Keyset set.Keyset
// Envelopes are here. Messages comes to the entity.
// So Entity.Messages
Envelopes chan *msg.Envelope
}
// Create a new entity from a DID and a Keyset. We need both.
// The DID is to verify the entity, and the keyset is to create the
// DID Document.
func New(k set.Keyset) (*Actor, error) {
err := k.Verify()
if err != nil {
return nil, fmt.Errorf("entity/new: failed to verify keyset: %w", err)
}
e, err := entity.New(k.DID)
if err != nil {
return nil, err
}
a := &Actor{
Entity: e,
Keyset: k,
Envelopes: make(chan *msg.Envelope, ENVELOPES_BUFFERSIZE),
}
a.Entity.Doc, err = doc.NewFromKeyset(a.Keyset)
if err != nil {
panic(err)
}
store(a)
return a, nil
}
// // Get an entity from the global map.
// // The input is a full did string. If one is created it will have no Nick.
// // The function should do the required lookups to get the nick.
// // And verify the entity.
func GetOrCreate(id string) (*Actor, error) {
// Creating a DID here implies validation before we try to load the actor.
d, err := did.New(id)
if err != nil {
return nil, fmt.Errorf("actor.GetOrCreate: %w", err)
}
e := load(d.Id)
if e != nil {
return e, nil
}
k, err := set.GetOrCreate(d.Fragment)
if err != nil {
return nil, fmt.Errorf("entity/newfromdid: failed to get or create keyset: %w", err)
}
return New(k)
}