91 lines
2.6 KiB
Go
91 lines
2.6 KiB
Go
/*
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Copyright IBM Corp. 2017 All Rights Reserved.
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SPDX-License-Identifier: Apache-2.0
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*/
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package multichannel
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import (
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"github.com/hyperledger/fabric-protos-go/common"
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"github.com/hyperledger/fabric/bccsp"
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"github.com/hyperledger/fabric/common/channelconfig"
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"github.com/hyperledger/fabric/common/ledger/blockledger"
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"github.com/hyperledger/fabric/protoutil"
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"github.com/pkg/errors"
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)
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// checkResources makes sure that the channel config is compatible with this binary and logs sanity checks
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func checkResources(res channelconfig.Resources) error {
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channelconfig.LogSanityChecks(res)
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oc, ok := res.OrdererConfig()
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if !ok {
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return errors.New("config does not contain orderer config")
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}
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if err := oc.Capabilities().Supported(); err != nil {
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return errors.WithMessagef(err, "config requires unsupported orderer capabilities: %s", err)
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}
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if err := res.ChannelConfig().Capabilities().Supported(); err != nil {
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return errors.WithMessagef(err, "config requires unsupported channel capabilities: %s", err)
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}
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return nil
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}
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// checkResourcesOrPanic invokes checkResources and panics if an error is returned
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func checkResourcesOrPanic(res channelconfig.Resources) {
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if err := checkResources(res); err != nil {
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logger.Panicf("[channel %s] %s", res.ConfigtxValidator().ChannelID(), err)
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}
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}
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type mutableResources interface {
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channelconfig.Resources
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Update(*channelconfig.Bundle)
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}
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type configResources struct {
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mutableResources
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bccsp bccsp.BCCSP
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}
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func (cr *configResources) CreateBundle(channelID string, config *common.Config) (*channelconfig.Bundle, error) {
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return channelconfig.NewBundle(channelID, config, cr.bccsp)
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}
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func (cr *configResources) Update(bndl *channelconfig.Bundle) {
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checkResourcesOrPanic(bndl)
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cr.mutableResources.Update(bndl)
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}
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func (cr *configResources) SharedConfig() channelconfig.Orderer {
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oc, ok := cr.OrdererConfig()
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if !ok {
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logger.Panicf("[channel %s] has no orderer configuration", cr.ConfigtxValidator().ChannelID())
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}
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return oc
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}
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type ledgerResources struct {
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*configResources
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blockledger.ReadWriter
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signatureVerifier protoutil.BlockVerifierFunc
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}
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// ChannelID passes through to the underlying configtx.Validator
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func (lr *ledgerResources) ChannelID() string {
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return lr.ConfigtxValidator().ChannelID()
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}
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// SignatureVerifier verifies a signature of a block.
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func (lr *ledgerResources) SignatureVerifier() protoutil.BlockVerifierFunc {
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return lr.signatureVerifier
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}
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// Block returns a block with the following number, or nil if such a block doesn't exist.
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func (lr *ledgerResources) Block(number uint64) *common.Block {
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if lr.Height() <= number {
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return nil
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}
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return blockledger.GetBlock(lr, number)
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}
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