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41 lines
1.5 KiB
41 lines
1.5 KiB
package proxy
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import (
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cmn "github.com/tendermint/tendermint/libs/common"
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log "github.com/tendermint/tendermint/libs/log"
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"github.com/tendermint/tendermint/lite"
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lclient "github.com/tendermint/tendermint/lite/client"
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dbm "github.com/tendermint/tm-db"
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)
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func NewVerifier(chainID, rootDir string, client lclient.SignStatusClient, logger log.Logger, cacheSize int) (*lite.DynamicVerifier, error) {
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logger = logger.With("module", "lite/proxy")
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logger.Info("lite/proxy/NewVerifier()...", "chainID", chainID, "rootDir", rootDir, "client", client)
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memProvider := lite.NewDBProvider("trusted.mem", dbm.NewMemDB()).SetLimit(cacheSize)
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lvlProvider := lite.NewDBProvider("trusted.lvl", dbm.NewDB("trust-base", dbm.GoLevelDBBackend, rootDir))
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trust := lite.NewMultiProvider(
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memProvider,
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lvlProvider,
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)
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source := lclient.NewProvider(chainID, client)
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cert := lite.NewDynamicVerifier(chainID, trust, source)
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cert.SetLogger(logger) // Sets logger recursively.
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// TODO: Make this more secure, e.g. make it interactive in the console?
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_, err := trust.LatestFullCommit(chainID, 1, 1<<63-1)
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if err != nil {
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logger.Info("lite/proxy/NewVerifier found no trusted full commit, initializing from source from height 1...")
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fc, err := source.LatestFullCommit(chainID, 1, 1)
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if err != nil {
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return nil, cmn.ErrorWrap(err, "fetching source full commit @ height 1")
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}
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err = trust.SaveFullCommit(fc)
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if err != nil {
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return nil, cmn.ErrorWrap(err, "saving full commit to trusted")
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}
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}
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return cert, nil
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}
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