122 lines
3.3 KiB
Go
122 lines
3.3 KiB
Go
package intermediate
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import (
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"crypto/ecdsa"
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apiClient "github.com/nspcc-dev/neofs-api-go/pkg/client"
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reputationapi "github.com/nspcc-dev/neofs-api-go/pkg/reputation"
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"github.com/nspcc-dev/neofs-node/cmd/neofs-node/reputation/common"
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"github.com/nspcc-dev/neofs-node/pkg/services/reputation"
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reputationcommon "github.com/nspcc-dev/neofs-node/pkg/services/reputation/common"
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eigentrustcalc "github.com/nspcc-dev/neofs-node/pkg/services/reputation/eigentrust/calculator"
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)
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// RemoteProviderPrm groups the required parameters of the RemoteProvider'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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Key *ecdsa.PrivateKey
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}
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// NewRemoteProvider creates a new instance of the RemoteProvider.
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//
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// Panics if at least one value of the parameters is invalid.
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//
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// The created RemoteProvider does not require additional
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// initialization and is completely ready for work.
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func NewRemoteProvider(prm RemoteProviderPrm) *RemoteProvider {
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switch {
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case prm.Key == nil:
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common.PanicOnPrmValue("NetMapSource", prm.Key)
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}
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return &RemoteProvider{
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key: prm.Key,
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}
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}
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// RemoteProvider is an implementation of the clientKeyRemoteProvider interface.
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type RemoteProvider struct {
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key *ecdsa.PrivateKey
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}
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func (rp RemoteProvider) WithClient(c apiClient.Client) reputationcommon.WriterProvider {
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return &TrustWriterProvider{
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client: c,
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key: rp.key,
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}
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}
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type TrustWriterProvider struct {
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client apiClient.Client
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key *ecdsa.PrivateKey
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}
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func (twp *TrustWriterProvider) InitWriter(ctx reputationcommon.Context) (reputationcommon.Writer, error) {
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eiContext, ok := ctx.(eigentrustcalc.Context)
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if !ok {
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// TODO: think if this can be done without such limitation
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panic(ErrIncorrectContextPanicMsg)
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}
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return &RemoteTrustWriter{
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eiCtx: eiContext,
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client: twp.client,
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key: twp.key,
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}, nil
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}
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type RemoteTrustWriter struct {
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eiCtx eigentrustcalc.Context
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client apiClient.Client
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key *ecdsa.PrivateKey
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buf []*apiClient.SendIntermediateTrustPrm
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}
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// Write check if passed context contains required
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// data(returns ErrIncorrectContext if not) and
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// caches passed trusts(as SendIntermediateTrustPrm structs).
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func (rtp *RemoteTrustWriter) Write(t reputation.Trust) error {
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apiTrustingPeer := reputationapi.NewPeerID()
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apiTrustingPeer.SetPublicKey(t.TrustingPeer())
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apiTrustedPeer := reputationapi.NewPeerID()
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apiTrustedPeer.SetPublicKey(t.Peer())
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apiTrust := reputationapi.NewTrust()
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apiTrust.SetValue(t.Value().Float64())
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apiTrust.SetPeer(apiTrustedPeer)
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apiPeerToPeerTrust := reputationapi.NewPeerToPeerTrust()
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apiPeerToPeerTrust.SetTrustingPeer(apiTrustingPeer)
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apiPeerToPeerTrust.SetTrust(apiTrust)
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p := &apiClient.SendIntermediateTrustPrm{}
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p.SetEpoch(rtp.eiCtx.Epoch())
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p.SetIteration(rtp.eiCtx.I())
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p.SetTrust(apiPeerToPeerTrust)
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rtp.buf = append(rtp.buf, p)
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return nil
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}
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// Close sends all cached intermediate trusts.
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// If error occurs, returns in immediately and stops iteration.
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func (rtp *RemoteTrustWriter) Close() (err error) {
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for _, prm := range rtp.buf {
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_, err = rtp.client.SendIntermediateTrust(
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rtp.eiCtx,
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*prm,
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apiClient.WithKey(rtp.key),
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)
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if err != nil {
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return
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}
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}
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return
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}
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