49 lines
1.4 KiB
Go
49 lines
1.4 KiB
Go
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package client
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import (
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"errors"
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"github.com/tendermint/light-client/certifiers"
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certclient "github.com/tendermint/light-client/certifiers/client"
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"github.com/tendermint/light-client/certifiers/files"
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rpcclient "github.com/tendermint/tendermint/rpc/client"
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)
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// GetNode prepares a simple rpc.Client for the given endpoint
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func GetNode(url string) rpcclient.Client {
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return rpcclient.NewHTTP(url, "/websocket")
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}
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// GetRPCProvider retuns a certifier compatible data source using
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// tendermint RPC
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func GetRPCProvider(url string) certifiers.Provider {
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return certclient.NewHTTP(url)
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}
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// GetLocalProvider returns a reference to a file store of headers
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// wrapped with an in-memory cache
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func GetLocalProvider(dir string) certifiers.Provider {
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return certifiers.NewCacheProvider(
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certifiers.NewMemStoreProvider(),
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files.NewProvider(dir),
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)
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}
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// GetCertifier initializes an inquiring certifier given a fixed chainID
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// and a local source of trusted data with at least one seed
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func GetCertifier(chainID string, trust certifiers.Provider,
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source certifiers.Provider) (*certifiers.InquiringCertifier, error) {
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// this gets the most recent verified seed
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seed, err := certifiers.LatestSeed(trust)
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if certifiers.IsSeedNotFoundErr(err) {
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return nil, errors.New("Please run init first to establish a root of trust")
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}
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if err != nil {
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return nil, err
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}
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cert := certifiers.NewInquiring(chainID, seed, trust, source)
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return cert, nil
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}
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