38 lines
884 B
Go
38 lines
884 B
Go
/*
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Copyright IBM Corp, SecureKey Technologies Inc. All Rights Reserved.
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SPDX-License-Identifier: Apache-2.0
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*/
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package auth
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import (
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"github.com/hyperledger/fabric-protos-go/peer"
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)
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// Filter defines an authentication filter that intercepts
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// ProcessProposal methods
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type Filter interface {
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peer.EndorserServer
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// Init initializes the Filter with the next EndorserServer
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Init(next peer.EndorserServer)
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}
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// ChainFilters chains the given auth filters in the order provided.
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// the last filter always forwards to the endorser
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func ChainFilters(endorser peer.EndorserServer, filters ...Filter) peer.EndorserServer {
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if len(filters) == 0 {
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return endorser
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}
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// Each filter forwards to the next
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for i := 0; i < len(filters)-1; i++ {
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filters[i].Init(filters[i+1])
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}
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// Last filter forwards to the endorser
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filters[len(filters)-1].Init(endorser)
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return filters[0]
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}
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