github.com/myafeier/fabric@v1.0.1-0.20170722181825-3a4b1f2bce86/common/config/channel_util.go (about) 1 /* 2 Copyright IBM Corp. 2017 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 config 18 19 import ( 20 "math" 21 22 "github.com/hyperledger/fabric/bccsp" 23 cb "github.com/hyperledger/fabric/protos/common" 24 "github.com/hyperledger/fabric/protos/utils" 25 ) 26 27 const defaultHashingAlgorithm = bccsp.SHA256 28 29 func configGroup(key string, value []byte) *cb.ConfigGroup { 30 result := cb.NewConfigGroup() 31 result.Values[key] = &cb.ConfigValue{ 32 Value: value, 33 } 34 return result 35 } 36 37 // TemplateConsortiumName creates a ConfigGroup representing the ConsortiumName 38 func TemplateConsortium(name string) *cb.ConfigGroup { 39 return configGroup(ConsortiumKey, utils.MarshalOrPanic(&cb.Consortium{Name: name})) 40 } 41 42 // TemplateHashingAlgorithm creates a ConfigGroup representing the HashingAlgorithm 43 func TemplateHashingAlgorithm(name string) *cb.ConfigGroup { 44 return configGroup(HashingAlgorithmKey, utils.MarshalOrPanic(&cb.HashingAlgorithm{Name: name})) 45 } 46 47 // DefaultHashingAlgorithm creates a headerless config item for the default hashing algorithm 48 func DefaultHashingAlgorithm() *cb.ConfigGroup { 49 return TemplateHashingAlgorithm(defaultHashingAlgorithm) 50 } 51 52 const defaultBlockDataHashingStructureWidth = math.MaxUint32 53 54 // TemplateBlockDataHashingStructure creates a headerless config item representing the block data hashing structure 55 func TemplateBlockDataHashingStructure(width uint32) *cb.ConfigGroup { 56 return configGroup(BlockDataHashingStructureKey, utils.MarshalOrPanic(&cb.BlockDataHashingStructure{Width: width})) 57 } 58 59 // DefaultBlockDatahashingStructure creates a headerless config item for the default block data hashing structure 60 func DefaultBlockDataHashingStructure() *cb.ConfigGroup { 61 return TemplateBlockDataHashingStructure(defaultBlockDataHashingStructureWidth) 62 } 63 64 var defaultOrdererAddresses = []string{"127.0.0.1:7050"} 65 66 // TemplateOrdererAddressess creates a headerless config item representing the orderer addresses 67 func TemplateOrdererAddresses(addresses []string) *cb.ConfigGroup { 68 return configGroup(OrdererAddressesKey, utils.MarshalOrPanic(&cb.OrdererAddresses{Addresses: addresses})) 69 } 70 71 // DefaultOrdererAddresses creates a headerless config item for the default orderer addresses 72 func DefaultOrdererAddresses() *cb.ConfigGroup { 73 return TemplateOrdererAddresses(defaultOrdererAddresses) 74 }