github.com/pokt-network/tendermint@v0.32.11-0.20230426215212-59310158d3e9/lite/proxy/verifier.go (about)

     1  package proxy
     2  
     3  import (
     4  	"github.com/pkg/errors"
     5  
     6  	dbm "github.com/tendermint/tm-db"
     7  
     8  	log "github.com/tendermint/tendermint/libs/log"
     9  	"github.com/tendermint/tendermint/lite"
    10  	lclient "github.com/tendermint/tendermint/lite/client"
    11  )
    12  
    13  func NewVerifier(
    14  	chainID,
    15  	rootDir string,
    16  	client lclient.SignStatusClient,
    17  	logger log.Logger,
    18  	cacheSize int,
    19  ) (*lite.DynamicVerifier, error) {
    20  
    21  	logger = logger.With("module", "lite/proxy")
    22  	logger.Info("lite/proxy/NewVerifier()...", "chainID", chainID, "rootDir", rootDir, "client", client)
    23  
    24  	memProvider := lite.NewDBProvider("trusted.mem", dbm.NewMemDB()).SetLimit(cacheSize)
    25  	lvlProvider := lite.NewDBProvider("trusted.lvl", dbm.NewDB("trust-base", dbm.GoLevelDBBackend, rootDir))
    26  	trust := lite.NewMultiProvider(
    27  		memProvider,
    28  		lvlProvider,
    29  	)
    30  	source := lclient.NewProvider(chainID, client)
    31  	cert := lite.NewDynamicVerifier(chainID, trust, source)
    32  	cert.SetLogger(logger) // Sets logger recursively.
    33  
    34  	// TODO: Make this more secure, e.g. make it interactive in the console?
    35  	_, err := trust.LatestFullCommit(chainID, 1, 1<<63-1)
    36  	if err != nil {
    37  		logger.Info("lite/proxy/NewVerifier found no trusted full commit, initializing from source from height 1...")
    38  		fc, err := source.LatestFullCommit(chainID, 1, 1)
    39  		if err != nil {
    40  			return nil, errors.Wrap(err, "fetching source full commit @ height 1")
    41  		}
    42  		err = trust.SaveFullCommit(fc)
    43  		if err != nil {
    44  			return nil, errors.Wrap(err, "saving full commit to trusted")
    45  		}
    46  	}
    47  
    48  	return cert, nil
    49  }