45 lines
1.2 KiB
Go
45 lines
1.2 KiB
Go
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package ibc
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import (
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"github.com/tendermint/light-client/certifiers"
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"github.com/tendermint/basecoin/stack"
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"github.com/tendermint/basecoin/state"
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)
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// newCertifier loads up the current state of this chain to make a proper
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func newCertifier(chainID string, store state.KVStore) (*certifiers.InquiringCertifier, error) {
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// each chain has their own prefixed subspace
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space := stack.PrefixedStore(chainID, store)
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p := dbProvider{space}
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// this gets the most recent verified seed
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seed, err := certifiers.LatestSeed(p)
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if err != nil {
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return nil, err
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}
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// we have no source for untrusted keys, but use the db to load trusted history
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cert := certifiers.NewInquiring(chainID, seed.Validators, p,
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certifiers.MissingProvider{})
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return cert, nil
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}
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// dbProvider wraps our kv store so it integrates with light-client verification
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type dbProvider struct {
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store state.KVStore
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}
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var _ certifiers.Provider = dbProvider{}
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func (d dbProvider) StoreSeed(seed certifiers.Seed) error {
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return nil
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}
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func (d dbProvider) GetByHeight(h int) (certifiers.Seed, error) {
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return certifiers.Seed{}, certifiers.ErrSeedNotFound()
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}
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func (d dbProvider) GetByHash(hash []byte) (certifiers.Seed, error) {
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return certifiers.Seed{}, certifiers.ErrSeedNotFound()
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}
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