-
Notifications
You must be signed in to change notification settings - Fork 0
/
endorsers.go
277 lines (235 loc) · 6.85 KB
/
endorsers.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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package discovery
import (
"encoding/json"
"fmt"
"io"
"reflect"
"strings"
"github.com/golang/protobuf/proto"
. "github.com/hyperledger/fabric-protos-go/discovery"
"github.com/hyperledger/fabric-protos-go/gossip"
"github.com/hyperledger/fabric-protos-go/msp"
"github.com/hyperledger/fabric/cmd/common"
discovery "github.com/hyperledger/fabric/discovery/client"
"github.com/hyperledger/fabric/gossip/protoext"
"github.com/pkg/errors"
)
// NewEndorsersCmd creates a new EndorsersCmd
func NewEndorsersCmd(stub Stub, parser ResponseParser) *EndorsersCmd {
return &EndorsersCmd{
stub: stub,
parser: parser,
}
}
// EndorsersCmd executes a command that retrieves endorsers for a chaincode invocation chain
type EndorsersCmd struct {
stub Stub
server *string
channel *string
chaincodes *[]string
collections *map[string]string
noPrivReads *[]string
parser ResponseParser
}
// SetCollections sets the collections to be the given collections
func (pc *EndorsersCmd) SetCollections(collections *map[string]string) {
pc.collections = collections
}
// SetNoPrivateReads sets the collections that are expected not to have private reads
func (pc *EndorsersCmd) SetNoPrivateReads(noPrivReads *[]string) {
pc.noPrivReads = noPrivReads
}
// SetChaincodes sets the chaincodes to be the given chaincodes
func (pc *EndorsersCmd) SetChaincodes(chaincodes *[]string) {
pc.chaincodes = chaincodes
}
// SetServer sets the server
func (pc *EndorsersCmd) SetServer(server *string) {
pc.server = server
}
// SetChannel sets the channel
func (pc *EndorsersCmd) SetChannel(channel *string) {
pc.channel = channel
}
// Execute executes the command
func (pc *EndorsersCmd) Execute(conf common.Config) error {
if pc.channel == nil || *pc.channel == "" {
return errors.New("no channel specified")
}
if pc.server == nil || *pc.server == "" {
return errors.New("no server specified")
}
server := *pc.server
channel := *pc.channel
ccAndCol := &chaincodesAndCollections{
Chaincodes: pc.chaincodes,
Collections: pc.collections,
NoPrivReads: pc.noPrivReads,
}
cc2collections, err := ccAndCol.parseInput()
if err != nil {
return err
}
var ccCalls []*ChaincodeCall
for _, cc := range *ccAndCol.Chaincodes {
ccCalls = append(ccCalls, &ChaincodeCall{
Name: cc,
CollectionNames: cc2collections[cc],
NoPrivateReads: ccAndCol.noPrivateReads(cc),
})
}
req, err := discovery.NewRequest().OfChannel(channel).AddEndorsersQuery(&ChaincodeInterest{Chaincodes: ccCalls})
if err != nil {
return errors.Wrap(err, "failed creating request")
}
res, err := pc.stub.Send(server, conf, req)
if err != nil {
return err
}
return pc.parser.ParseResponse(channel, res)
}
// EndorserResponseParser parses endorsement responses from the peer
type EndorserResponseParser struct {
io.Writer
}
// ParseResponse parses the given response for the given channel
func (parser *EndorserResponseParser) ParseResponse(channel string, res ServiceResponse) error {
rawResponse := res.Raw()
if len(rawResponse.Results) == 0 {
return errors.New("empty results")
}
if e := rawResponse.Results[0].GetError(); e != nil {
return errors.Errorf("server returned: %s", e.Content)
}
ccQueryRes := rawResponse.Results[0].GetCcQueryRes()
if ccQueryRes == nil {
return errors.Errorf("server returned response of unexpected type: %v", reflect.TypeOf(rawResponse.Results[0]))
}
jsonBytes, _ := json.MarshalIndent(parseEndorsementDescriptors(ccQueryRes.Content), "", "\t")
fmt.Fprintln(parser.Writer, string(jsonBytes))
return nil
}
type chaincodesAndCollections struct {
Chaincodes *[]string
Collections *map[string]string
NoPrivReads *[]string
}
func (ec *chaincodesAndCollections) noPrivateReads(chaincodeName string) bool {
for _, cc := range *ec.NoPrivReads {
if chaincodeName == cc {
return true
}
}
return false
}
func (ec *chaincodesAndCollections) existsInChaincodes(chaincodeName string) bool {
for _, cc := range *ec.Chaincodes {
if chaincodeName == cc {
return true
}
}
return false
}
func (ec *chaincodesAndCollections) parseInput() (map[string][]string, error) {
var emptyChaincodes []string
if ec.Chaincodes == nil {
ec.Chaincodes = &emptyChaincodes
}
if ec.NoPrivReads == nil {
ec.NoPrivReads = &emptyChaincodes
}
var emptyCollections map[string]string
if ec.Collections == nil {
ec.Collections = &emptyCollections
}
res := make(map[string][]string)
for _, cc := range *ec.Chaincodes {
res[cc] = nil
}
for _, cc := range *ec.NoPrivReads {
if !ec.existsInChaincodes(cc) {
return nil, errors.Errorf("chaincode %s is specified as not containing private data reads but should be explicitly defined via a chaincode flag", cc)
}
}
for cc, collections := range *ec.Collections {
if !ec.existsInChaincodes(cc) {
return nil, errors.Errorf("a collection specified chaincode %s but it wasn't specified with a chaincode flag", cc)
}
res[cc] = strings.Split(collections, ",")
}
return res, nil
}
func parseEndorsementDescriptors(descriptors []*EndorsementDescriptor) []endorsermentDescriptor {
var res []endorsermentDescriptor
for _, desc := range descriptors {
endorsersByGroups := make(map[string][]endorser)
for grp, endorsers := range desc.EndorsersByGroups {
for _, p := range endorsers.Peers {
endorsersByGroups[grp] = append(endorsersByGroups[grp], endorserFromRaw(p))
}
}
res = append(res, endorsermentDescriptor{
Chaincode: desc.Chaincode,
Layouts: desc.Layouts,
EndorsersByGroups: endorsersByGroups,
})
}
return res
}
type endorser struct {
MSPID string
LedgerHeight uint64
Endpoint string
Identity string
}
type endorsermentDescriptor struct {
Chaincode string
EndorsersByGroups map[string][]endorser
Layouts []*Layout
}
func endorserFromRaw(p *Peer) endorser {
sId := &msp.SerializedIdentity{}
proto.Unmarshal(p.Identity, sId)
return endorser{
MSPID: sId.Mspid,
Endpoint: endpointFromEnvelope(p.MembershipInfo),
LedgerHeight: ledgerHeightFromEnvelope(p.StateInfo),
Identity: string(sId.IdBytes),
}
}
func endpointFromEnvelope(env *gossip.Envelope) string {
if env == nil {
return ""
}
aliveMsg, _ := protoext.EnvelopeToGossipMessage(env)
if aliveMsg == nil {
return ""
}
if !protoext.IsAliveMsg(aliveMsg.GossipMessage) {
return ""
}
if aliveMsg.GetAliveMsg().Membership == nil {
return ""
}
return aliveMsg.GetAliveMsg().Membership.Endpoint
}
func ledgerHeightFromEnvelope(env *gossip.Envelope) uint64 {
if env == nil {
return 0
}
stateInfoMsg, _ := protoext.EnvelopeToGossipMessage(env)
if stateInfoMsg == nil {
return 0
}
if !protoext.IsStateInfoMsg(stateInfoMsg.GossipMessage) {
return 0
}
if stateInfoMsg.GetStateInfo().Properties == nil {
return 0
}
return stateInfoMsg.GetStateInfo().Properties.LedgerHeight
}