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configblock.go
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configblock.go
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/*
Copyright IBM Corp All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package nwo
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"bytes"
"github.com/golang/protobuf/proto"
"github.com/hyperledger/fabric/common/tools/configtxlator/update"
"github.com/hyperledger/fabric/integration/nwo/commands"
"github.com/hyperledger/fabric/protos/common"
protosorderer "github.com/hyperledger/fabric/protos/orderer"
ectdraft_protos "github.com/hyperledger/fabric/protos/orderer/etcdraft"
"github.com/hyperledger/fabric/protos/utils"
. "github.com/onsi/gomega"
"github.com/onsi/gomega/gbytes"
"github.com/onsi/gomega/gexec"
)
// GetConfigBlock retrieves the current config block for a channel
func GetConfigBlock(n *Network, peer *Peer, orderer *Orderer, channel string) *common.Block {
tempDir, err := ioutil.TempDir("", "getConfigBlock")
Expect(err).NotTo(HaveOccurred())
defer os.RemoveAll(tempDir)
// fetch the config block
output := filepath.Join(tempDir, "config_block.pb")
sess, err := n.OrdererAdminSession(orderer, peer, commands.ChannelFetch{
ChannelID: channel,
Block: "config",
Orderer: n.OrdererAddress(orderer, ListenPort),
OutputFile: output,
})
Expect(err).NotTo(HaveOccurred())
Eventually(sess, n.EventuallyTimeout).Should(gexec.Exit(0))
Expect(sess.Err).To(gbytes.Say("Received block: "))
// unmarshal the config block bytes
configBlock := UnmarshalBlockFromFile(output)
return configBlock
}
// GetConfig retrieves the last config of the given channel
func GetConfig(n *Network, peer *Peer, orderer *Orderer, channel string) *common.Config {
configBlock := GetConfigBlock(n, peer, orderer, channel)
// unmarshal the envelope bytes
envelope, err := utils.GetEnvelopeFromBlock(configBlock.Data.Data[0])
Expect(err).NotTo(HaveOccurred())
// unmarshal the payload bytes
payload, err := utils.GetPayload(envelope)
Expect(err).NotTo(HaveOccurred())
// unmarshal the config envelope bytes
configEnv := &common.ConfigEnvelope{}
err = proto.Unmarshal(payload.Data, configEnv)
Expect(err).NotTo(HaveOccurred())
// clone the config
return configEnv.Config
}
// UpdateConfig computes, signs, and submits a configuration update and waits
// for the update to complete.
func UpdateConfig(n *Network, orderer *Orderer, channel string, current, updated *common.Config, submitter *Peer, additionalSigners ...*Peer) {
tempDir, err := ioutil.TempDir("", "updateConfig")
Expect(err).NotTo(HaveOccurred())
defer os.RemoveAll(tempDir)
// compute update
configUpdate, err := update.Compute(current, updated)
Expect(err).NotTo(HaveOccurred())
configUpdate.ChannelId = channel
signedEnvelope, err := utils.CreateSignedEnvelope(
common.HeaderType_CONFIG_UPDATE,
channel,
nil, // local signer
&common.ConfigUpdateEnvelope{ConfigUpdate: utils.MarshalOrPanic(configUpdate)},
0, // message version
0, // epoch
)
Expect(err).NotTo(HaveOccurred())
Expect(signedEnvelope).NotTo(BeNil())
updateFile := filepath.Join(tempDir, "update.pb")
err = ioutil.WriteFile(updateFile, utils.MarshalOrPanic(signedEnvelope), 0600)
Expect(err).NotTo(HaveOccurred())
for _, signer := range additionalSigners {
sess, err := n.PeerAdminSession(signer, commands.SignConfigTx{File: updateFile})
Expect(err).NotTo(HaveOccurred())
Eventually(sess, n.EventuallyTimeout).Should(gexec.Exit(0))
}
// get current configuration block number
currentBlockNumber := CurrentConfigBlockNumber(n, submitter, orderer, channel)
sess, err := n.PeerAdminSession(submitter, commands.ChannelUpdate{
ChannelID: channel,
Orderer: n.OrdererAddress(orderer, ListenPort),
File: updateFile,
})
Expect(err).NotTo(HaveOccurred())
Eventually(sess, n.EventuallyTimeout).Should(gexec.Exit(0))
Expect(sess.Err).To(gbytes.Say("Successfully submitted channel update"))
// wait for the block to be committed to all peers that
// have joined the channel
for _, peer := range n.PeersWithChannel(channel) {
ccb := func() uint64 { return CurrentConfigBlockNumber(n, peer, orderer, channel) }
Eventually(ccb, n.EventuallyTimeout).Should(BeNumerically(">", currentBlockNumber))
}
}
// UpdateOrdererConfig computes, signs, and submits a configuration update which requires orderers signature and waits
// for the update to complete.
func UpdateOrdererConfig(n *Network, orderer *Orderer, channel string, current, updated *common.Config, submitter *Peer, additionalSigners ...*Orderer) {
tempDir, err := ioutil.TempDir("", "updateConfig")
Expect(err).NotTo(HaveOccurred())
updateFile := filepath.Join(tempDir, "update.pb")
defer os.RemoveAll(tempDir)
computeUpdateOrdererConfig(updateFile, n, channel, current, updated, submitter, additionalSigners...)
currentBlockNumber := CurrentConfigBlockNumber(n, submitter, orderer, channel)
Eventually(func() string {
sess, err := n.OrdererAdminSession(orderer, submitter, commands.ChannelUpdate{
ChannelID: channel,
Orderer: n.OrdererAddress(orderer, ListenPort),
File: updateFile,
})
if err != nil {
return err.Error()
}
sess.Wait(n.EventuallyTimeout)
if sess.ExitCode() != 0 {
return fmt.Sprintf("exit code is %d", sess.ExitCode())
}
if strings.Contains(string(sess.Err.Contents()), "Successfully submitted channel update") {
return ""
}
return fmt.Sprintf("channel update output: %s", string(sess.Err.Contents()))
}, n.EventuallyTimeout).Should(BeEmpty())
// wait for the block to be committed
ccb := func() uint64 { return CurrentConfigBlockNumber(n, submitter, orderer, channel) }
Eventually(ccb, n.EventuallyTimeout).Should(BeNumerically(">", currentBlockNumber))
}
// CurrentConfigBlockNumber retrieves the block number from the header of the
// current config block. This can be used to detect when configuration change
// has completed. If an orderer is not provided, the current config block will
// be fetched from the peer.
func CurrentConfigBlockNumber(n *Network, peer *Peer, orderer *Orderer, channel string) uint64 {
tempDir, err := ioutil.TempDir("", "currentConfigBlock")
Expect(err).NotTo(HaveOccurred())
defer os.RemoveAll(tempDir)
// fetch the config block
output := filepath.Join(tempDir, "config_block.pb")
if orderer == nil {
return CurrentConfigBlockNumberFromPeer(n, peer, channel, output)
}
FetchConfigBlock(n, peer, orderer, channel, output)
// unmarshal the config block bytes
configBlock := UnmarshalBlockFromFile(output)
return configBlock.Header.Number
}
// CurrentConfigBlockNumberFromPeer retrieves the block number from the header
// of the peer's current config block.
func CurrentConfigBlockNumberFromPeer(n *Network, peer *Peer, channel, output string) uint64 {
sess, err := n.PeerAdminSession(peer, commands.ChannelFetch{
ChannelID: channel,
Block: "config",
OutputFile: output,
})
Expect(err).NotTo(HaveOccurred())
Eventually(sess, n.EventuallyTimeout).Should(gexec.Exit(0))
Expect(sess.Err).To(gbytes.Say("Received block: "))
configBlock := UnmarshalBlockFromFile(output)
return configBlock.Header.Number
}
// FetchConfigBlock fetches latest config block.
func FetchConfigBlock(n *Network, peer *Peer, orderer *Orderer, channel string, output string) {
fetch := func() int {
sess, err := n.OrdererAdminSession(orderer, peer, commands.ChannelFetch{
ChannelID: channel,
Block: "config",
Orderer: n.OrdererAddress(orderer, ListenPort),
OutputFile: output,
})
Expect(err).NotTo(HaveOccurred())
code := sess.Wait(n.EventuallyTimeout).ExitCode()
if code == 0 {
Expect(sess.Err).To(gbytes.Say("Received block: "))
}
return code
}
Eventually(fetch, n.EventuallyTimeout).Should(Equal(0))
}
// UpdateOrdererConfigFail computes, signs, and submits a configuration update which requires orderers signature
// and waits for the update to FAIL.
func UpdateOrdererConfigFail(n *Network, orderer *Orderer, channel string, current, updated *common.Config, submitter *Peer, additionalSigners ...*Orderer) {
tempDir, err := ioutil.TempDir("", "updateConfig")
Expect(err).NotTo(HaveOccurred())
updateFile := filepath.Join(tempDir, "update.pb")
defer os.RemoveAll(tempDir)
computeUpdateOrdererConfig(updateFile, n, channel, current, updated, submitter, additionalSigners...)
//session should not return with a zero exit code nor with a success response
sess, err := n.OrdererAdminSession(orderer, submitter, commands.ChannelUpdate{
ChannelID: channel,
Orderer: n.OrdererAddress(orderer, ListenPort),
File: updateFile,
})
Expect(err).NotTo(HaveOccurred())
Eventually(sess, n.EventuallyTimeout).ShouldNot(gexec.Exit(0))
Expect(sess.Err).NotTo(gbytes.Say("Successfully submitted channel update"))
}
func computeUpdateOrdererConfig(updateFile string, n *Network, channel string, current, updated *common.Config, submitter *Peer, additionalSigners ...*Orderer) {
// compute update
configUpdate, err := update.Compute(current, updated)
Expect(err).NotTo(HaveOccurred())
configUpdate.ChannelId = channel
signedEnvelope, err := utils.CreateSignedEnvelope(
common.HeaderType_CONFIG_UPDATE,
channel,
nil, // local signer
&common.ConfigUpdateEnvelope{ConfigUpdate: utils.MarshalOrPanic(configUpdate)},
0, // message version
0, // epoch
)
Expect(err).NotTo(HaveOccurred())
Expect(signedEnvelope).NotTo(BeNil())
err = ioutil.WriteFile(updateFile, utils.MarshalOrPanic(signedEnvelope), 0600)
Expect(err).NotTo(HaveOccurred())
for _, signer := range additionalSigners {
sess, err := n.OrdererAdminSession(signer, submitter, commands.SignConfigTx{File: updateFile})
Expect(err).NotTo(HaveOccurred())
Eventually(sess, n.EventuallyTimeout).Should(gexec.Exit(0))
}
}
// UnmarshalBlockFromFile unmarshals a proto encoded block from a file.
func UnmarshalBlockFromFile(blockFile string) *common.Block {
blockBytes, err := ioutil.ReadFile(blockFile)
Expect(err).NotTo(HaveOccurred())
block, err := utils.UnmarshalBlock(blockBytes)
Expect(err).NotTo(HaveOccurred())
return block
}
// AddConsenter adds a new consenter to the given channel
func AddConsenter(n *Network, peer *Peer, orderer *Orderer, channel string, consenter ectdraft_protos.Consenter) {
UpdateEtcdRaftMetadata(n, peer, orderer, channel, func(metadata *ectdraft_protos.ConfigMetadata) {
metadata.Consenters = append(metadata.Consenters, &consenter)
})
}
// RemoveConsenter removes a consenter with the given certificate in PEM format from the given channel
func RemoveConsenter(n *Network, peer *Peer, orderer *Orderer, channel string, certificate []byte) {
UpdateEtcdRaftMetadata(n, peer, orderer, channel, func(metadata *ectdraft_protos.ConfigMetadata) {
var newConsenters []*ectdraft_protos.Consenter
for _, consenter := range metadata.Consenters {
if bytes.Equal(consenter.ClientTlsCert, certificate) || bytes.Equal(consenter.ServerTlsCert, certificate) {
continue
}
newConsenters = append(newConsenters, consenter)
}
metadata.Consenters = newConsenters
})
}
// ConsensusMetadataMutator receives ConsensusType.Metadata and mutates it
type ConsensusMetadataMutator func([]byte) []byte
// UpdateConsensusMetadata executes a config update that updates the consensus metadata according to the given ConsensusMetadataMutator
func UpdateConsensusMetadata(network *Network, peer *Peer, orderer *Orderer, channel string, mutateMetadata ConsensusMetadataMutator) {
config := GetConfig(network, peer, orderer, channel)
updatedConfig := proto.Clone(config).(*common.Config)
consensusTypeConfigValue := updatedConfig.ChannelGroup.Groups["Orderer"].Values["ConsensusType"]
consensusTypeValue := &protosorderer.ConsensusType{}
err := proto.Unmarshal(consensusTypeConfigValue.Value, consensusTypeValue)
Expect(err).NotTo(HaveOccurred())
consensusTypeValue.Metadata = mutateMetadata(consensusTypeValue.Metadata)
updatedConfig.ChannelGroup.Groups["Orderer"].Values["ConsensusType"] = &common.ConfigValue{
ModPolicy: "Admins",
Value: utils.MarshalOrPanic(consensusTypeValue),
}
UpdateOrdererConfig(network, orderer, channel, config, updatedConfig, peer, orderer)
}
// UpdateEtcdRaftMetadata executes a config update that updates the etcdraft metadata according to the given function f
func UpdateEtcdRaftMetadata(network *Network, peer *Peer, orderer *Orderer, channel string, f func(md *ectdraft_protos.ConfigMetadata)) {
UpdateConsensusMetadata(network, peer, orderer, channel, func(originalMetadata []byte) []byte {
metadata := &ectdraft_protos.ConfigMetadata{}
err := proto.Unmarshal(originalMetadata, metadata)
Expect(err).NotTo(HaveOccurred())
f(metadata)
newMetadata, err := proto.Marshal(metadata)
Expect(err).NotTo(HaveOccurred())
return newMetadata
})
}