github.com/adnan-c/fabric_e2e_couchdb@v0.6.1-preview.0.20170228180935-21ce6b23cf91/orderer/sbft/config.go (about) 1 /* 2 Copyright IBM Corp. 2016 All Rights Reserved. 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 17 package sbft 18 19 import ( 20 "encoding/json" 21 "fmt" 22 "io/ioutil" 23 24 "github.com/golang/protobuf/proto" 25 "github.com/hyperledger/fabric/orderer/sbft/crypto" 26 "github.com/hyperledger/fabric/orderer/sbft/persist" 27 ) 28 29 func ReadJsonConfig(file string) (*ConsensusConfig, error) { 30 configData, err := ioutil.ReadFile(file) 31 if err != nil { 32 return nil, err 33 } 34 35 jconfig := &JsonConfig{} 36 err = json.Unmarshal(configData, jconfig) 37 if err != nil { 38 return nil, err 39 } 40 41 config := &ConsensusConfig{} 42 config.Consensus = jconfig.Consensus 43 config.Peers = make(map[string][]byte) 44 for n, p := range jconfig.Peers { 45 if p.Address == "" { 46 return nil, fmt.Errorf("The required peer address is missing (for peer %d)", n) 47 } 48 cert, err := crypto.ParseCertPEM(p.Cert) 49 if err != nil { 50 fmt.Println("exiting") 51 return nil, err 52 } 53 config.Peers[p.Address] = cert 54 } 55 56 // XXX check for duplicate cert 57 if config.Consensus.N != 0 && int(config.Consensus.N) != len(config.Peers) { 58 return nil, fmt.Errorf("peer config does not match pbft N") 59 } 60 61 config.Consensus.N = uint64(len(config.Peers)) 62 63 return config, nil 64 } 65 66 func SaveConfig(p *persist.Persist, c *ConsensusConfig) error { 67 craw, err := proto.Marshal(c) 68 if err != nil { 69 return err 70 } 71 err = p.StoreState("config", craw) 72 return err 73 } 74 75 func RestoreConfig(p *persist.Persist) (*ConsensusConfig, error) { 76 raw, err := p.ReadState("config") 77 if err != nil { 78 return nil, err 79 } 80 config := &ConsensusConfig{} 81 err = proto.Unmarshal(raw, config) 82 if err != nil { 83 return nil, err 84 } 85 return config, nil 86 }