-
Notifications
You must be signed in to change notification settings - Fork 1
/
builder.go
163 lines (137 loc) · 3.88 KB
/
builder.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
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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
package core
import (
"crypto/rand"
"encoding/base64"
"errors"
ds "github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-datastore"
dsync "github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-datastore/sync"
goprocessctx "github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/jbenet/goprocess/context"
context "github.com/ipfs/go-ipfs/Godeps/_workspace/src/golang.org/x/net/context"
bstore "github.com/ipfs/go-ipfs/blocks/blockstore"
key "github.com/ipfs/go-ipfs/blocks/key"
bserv "github.com/ipfs/go-ipfs/blockservice"
offline "github.com/ipfs/go-ipfs/exchange/offline"
dag "github.com/ipfs/go-ipfs/merkledag"
ci "github.com/ipfs/go-ipfs/p2p/crypto"
peer "github.com/ipfs/go-ipfs/p2p/peer"
path "github.com/ipfs/go-ipfs/path"
pin "github.com/ipfs/go-ipfs/pin"
repo "github.com/ipfs/go-ipfs/repo"
cfg "github.com/ipfs/go-ipfs/repo/config"
)
type BuildCfg struct {
// If online is set, the node will have networking enabled
Online bool
// If NilRepo is set, a repo backed by a nil datastore will be constructed
NilRepo bool
Routing RoutingOption
Host HostOption
Repo repo.Repo
}
func (cfg *BuildCfg) fillDefaults() error {
if cfg.Repo != nil && cfg.NilRepo {
return errors.New("cannot set a repo and specify nilrepo at the same time")
}
if cfg.Repo == nil {
var d ds.Datastore
d = ds.NewMapDatastore()
if cfg.NilRepo {
d = ds.NewNullDatastore()
}
r, err := defaultRepo(dsync.MutexWrap(d))
if err != nil {
return err
}
cfg.Repo = r
}
if cfg.Routing == nil {
cfg.Routing = DHTOption
}
if cfg.Host == nil {
cfg.Host = DefaultHostOption
}
return nil
}
func defaultRepo(dstore ds.ThreadSafeDatastore) (repo.Repo, error) {
c := cfg.Config{}
priv, pub, err := ci.GenerateKeyPairWithReader(ci.RSA, 1024, rand.Reader)
if err != nil {
return nil, err
}
data, err := pub.Hash()
if err != nil {
return nil, err
}
privkeyb, err := priv.Bytes()
if err != nil {
return nil, err
}
c.Bootstrap = cfg.DefaultBootstrapAddresses
c.Addresses.Swarm = []string{"/ip4/0.0.0.0/tcp/4001"}
c.Identity.PeerID = key.Key(data).B58String()
c.Identity.PrivKey = base64.StdEncoding.EncodeToString(privkeyb)
return &repo.Mock{
D: dstore,
C: c,
}, nil
}
func NewNode(ctx context.Context, cfg *BuildCfg) (*IpfsNode, error) {
if cfg == nil {
cfg = new(BuildCfg)
}
err := cfg.fillDefaults()
if err != nil {
return nil, err
}
n := &IpfsNode{
mode: offlineMode,
Repo: cfg.Repo,
ctx: ctx,
Peerstore: peer.NewPeerstore(),
}
if cfg.Online {
n.mode = onlineMode
}
// TODO: this is a weird circular-ish dependency, rework it
n.proc = goprocessctx.WithContextAndTeardown(ctx, n.teardown)
if err := setupNode(ctx, n, cfg); err != nil {
n.Close()
return nil, err
}
return n, nil
}
func setupNode(ctx context.Context, n *IpfsNode, cfg *BuildCfg) error {
// setup local peer ID (private key is loaded in online setup)
if err := n.loadID(); err != nil {
return err
}
var err error
n.Blockstore, err = bstore.WriteCached(bstore.NewBlockstore(n.Repo.Datastore()), kSizeBlockstoreWriteCache)
if err != nil {
return err
}
if cfg.Online {
rcfg, err := n.Repo.Config()
if err != nil {
return err
}
do := setupDiscoveryOption(rcfg.Discovery)
if err := n.startOnlineServices(ctx, cfg.Routing, cfg.Host, do); err != nil {
return err
}
} else {
n.Exchange = offline.Exchange(n.Blockstore)
}
n.Blocks = bserv.New(n.Blockstore, n.Exchange)
n.DAG = dag.NewDAGService(n.Blocks)
n.Pinning, err = pin.LoadPinner(n.Repo.Datastore(), n.DAG)
if err != nil {
// TODO: we should move towards only running 'NewPinner' explicity on
// node init instead of implicitly here as a result of the pinner keys
// not being found in the datastore.
// this is kinda sketchy and could cause data loss
n.Pinning = pin.NewPinner(n.Repo.Datastore(), n.DAG)
}
n.Resolver = &path.Resolver{DAG: n.DAG}
return nil
}