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orderer.go 3.15 KB
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MJL authored 2021-08-06 18:40 . first commit
/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
/*
Notice: This file has been modified for Hyperledger Fabric SDK Go usage.
Please review third_party pinning scripts and patches for more details.
*/
package capabilities
import (
cb "github.com/hyperledger/fabric-protos-go/common"
)
const (
ordererTypeName = "Orderer"
// OrdererV1_1 is the capabilities string for standard new non-backwards compatible Fabric v1.1 orderer capabilities.
OrdererV1_1 = "V1_1"
// OrdererV1_4_2 is the capabilities string for standard new non-backwards compatible Fabric v1.4.2 orderer capabilities.
OrdererV1_4_2 = "V1_4_2"
// OrdererV2_0 is the capabilities string that defines new Fabric v2.0 orderer capabilities.
OrdererV2_0 = "V2_0"
)
// OrdererProvider provides capabilities information for orderer level config.
type OrdererProvider struct {
*registry
v11BugFixes bool
v142 bool
V20 bool
}
// NewOrdererProvider creates an orderer capabilities provider.
func NewOrdererProvider(capabilities map[string]*cb.Capability) *OrdererProvider {
cp := &OrdererProvider{}
cp.registry = newRegistry(cp, capabilities)
_, cp.v11BugFixes = capabilities[OrdererV1_1]
_, cp.v142 = capabilities[OrdererV1_4_2]
_, cp.V20 = capabilities[OrdererV2_0]
return cp
}
// Type returns a descriptive string for logging purposes.
func (cp *OrdererProvider) Type() string {
return ordererTypeName
}
// HasCapability returns true if the capability is supported by this binary.
func (cp *OrdererProvider) HasCapability(capability string) bool {
switch capability {
// Add new capability names here
case OrdererV1_1:
return true
case OrdererV1_4_2:
return true
case OrdererV2_0:
return true
default:
return false
}
}
// PredictableChannelTemplate specifies whether the v1.0 undesirable behavior of setting the /Channel
// group's mod_policy to "" and copying versions from the channel config should be fixed or not.
func (cp *OrdererProvider) PredictableChannelTemplate() bool {
return cp.v11BugFixes || cp.v142 || cp.V20
}
// Resubmission specifies whether the v1.0 non-deterministic commitment of tx should be fixed by re-submitting
// the re-validated tx.
func (cp *OrdererProvider) Resubmission() bool {
return cp.v11BugFixes || cp.v142 || cp.V20
}
// ExpirationCheck specifies whether the orderer checks for identity expiration checks
// when validating messages
func (cp *OrdererProvider) ExpirationCheck() bool {
return cp.v11BugFixes || cp.v142 || cp.V20
}
// ConsensusTypeMigration checks whether the orderer permits a consensus-type migration.
//
// A Kafka-based Ordering Service Node requires these capabilities in order to receive and process a config update
// with consensus-type migration change. Migration is supported from Kafka to Raft only.
// If not present, these config updates will be rejected.
func (cp *OrdererProvider) ConsensusTypeMigration() bool {
return cp.v142 || cp.V20
}
// UseChannelCreationPolicyAsAdmins determines whether the orderer should use the name
// "Admins" instead of "ChannelCreationPolicy" in the new channel config template.
func (cp *OrdererProvider) UseChannelCreationPolicyAsAdmins() bool {
return cp.V20
}
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