91 lines
3 KiB
Go
91 lines
3 KiB
Go
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package common
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import (
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apiClient "github.com/nspcc-dev/neofs-api-go/pkg/client"
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"github.com/nspcc-dev/neofs-node/pkg/network"
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reputationcommon "github.com/nspcc-dev/neofs-node/pkg/services/reputation/common"
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reputationrouter "github.com/nspcc-dev/neofs-node/pkg/services/reputation/common/router"
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trustcontroller "github.com/nspcc-dev/neofs-node/pkg/services/reputation/local/controller"
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"github.com/pkg/errors"
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)
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type clientCache interface {
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Get(string) (apiClient.Client, error)
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}
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// clientKeyRemoteProvider must provide remote writer and take into account
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// that requests must be sent via passed api client and must be signed with
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// passed private key.
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type clientKeyRemoteProvider interface {
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WithClient(apiClient.Client) reputationcommon.WriterProvider
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}
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// remoteTrustProvider is implementation of reputation RemoteWriterProvider interface.
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// It caches clients, checks if it is the end of the route and checks either current
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// node is remote target or not.
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//
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// remoteTrustProvider requires to be provided with clientKeyRemoteProvider.
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type remoteTrustProvider struct {
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localAddrSrc network.LocalAddressSource
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deadEndProvider reputationcommon.WriterProvider
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clientCache clientCache
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remoteProvider clientKeyRemoteProvider
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}
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// RemoteProviderPrm groups the required parameters of the remoteTrustProvider's constructor.
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//
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// All values must comply with the requirements imposed on them.
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// Passing incorrect parameter values will result in constructor
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// failure (error or panic depending on the implementation).
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type RemoteProviderPrm struct {
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LocalAddrSrc network.LocalAddressSource
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DeadEndProvider reputationcommon.WriterProvider
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ClientCache clientCache
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WriterProvider clientKeyRemoteProvider
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}
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func NewRemoteTrustProvider(prm RemoteProviderPrm) reputationrouter.RemoteWriterProvider {
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switch {
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case prm.LocalAddrSrc == nil:
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PanicOnPrmValue("LocalAddrSrc", prm.LocalAddrSrc)
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case prm.DeadEndProvider == nil:
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PanicOnPrmValue("DeadEndProvider", prm.DeadEndProvider)
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case prm.ClientCache == nil:
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PanicOnPrmValue("ClientCache", prm.ClientCache)
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case prm.WriterProvider == nil:
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PanicOnPrmValue("WriterProvider", prm.WriterProvider)
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}
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return &remoteTrustProvider{
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localAddrSrc: prm.LocalAddrSrc,
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deadEndProvider: prm.DeadEndProvider,
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clientCache: prm.ClientCache,
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remoteProvider: prm.WriterProvider,
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}
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}
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func (rtp *remoteTrustProvider) InitRemote(srv reputationcommon.ServerInfo) (reputationcommon.WriterProvider, error) {
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if srv == nil {
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return rtp.deadEndProvider, nil
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}
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addr := srv.Address()
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if rtp.localAddrSrc.LocalAddress().String() == srv.Address() {
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// if local => return no-op writer
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return trustcontroller.SimpleWriterProvider(new(NopReputationWriter)), nil
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}
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ipAddr, err := network.IPAddrFromMultiaddr(addr)
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if err != nil {
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return nil, errors.Wrap(err, "could not convert address to IP format")
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}
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c, err := rtp.clientCache.Get(ipAddr)
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if err != nil {
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return nil, errors.Wrap(err, "could not initialize API client")
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}
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return rtp.remoteProvider.WithClient(c), nil
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}
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