client

Documentation

Index

• func ErrNoData() error
• func GetCertifiedCommit(h int64, node rpcclient.Client, cert lite.Certifier) (empty lite.Commit, err error)
• func GetLocalProvider(dir string) lite.Provider
• func GetNode(url string) rpcclient.Client
• func GetRPCProvider(url string) lite.Provider
• func GetWithProof(key []byte, reqHeight int64, node rpcclient.Client, cert lite.Certifier) (val []byte, height int64, proof iavl.KeyProof, err error)
• func GetWithProofOptions(path string, key []byte, opts rpcclient.ABCIQueryOptions, ...) (*ctypes.ResultABCIQuery, iavl.KeyProof, error)
• func IsNoDataErr(err error) bool

Functions

func ErrNoData

func ErrNoData() error

func GetCertifiedCommit

func GetCertifiedCommit(h int64, node rpcclient.Client,
	cert lite.Certifier) (empty lite.Commit, err error)

GetCertifiedCommit gets the signed header for a given height and certifies it. Returns error if unable to get a proven header.

func GetLocalProvider

func GetLocalProvider(dir string) lite.Provider

GetLocalProvider returns a reference to a file store of headers wrapped with an in-memory cache

func GetNode

func GetNode(url string) rpcclient.Client

GetNode prepares a simple rpc.Client for the given endpoint

func GetRPCProvider

func GetRPCProvider(url string) lite.Provider

GetRPCProvider retuns a certifier compatible data source using tendermint RPC

func GetWithProof

func GetWithProof(key []byte, reqHeight int64, node rpcclient.Client,
	cert lite.Certifier) (
	val []byte, height int64, proof iavl.KeyProof, err error)

GetWithProof will query the key on the given node, and verify it has a valid proof, as defined by the certifier.

If there is any error in checking, returns an error. If val is non-empty, proof should be KeyExistsProof If val is empty, proof should be KeyMissingProof

func GetWithProofOptions

func GetWithProofOptions(path string, key []byte, opts rpcclient.ABCIQueryOptions,
	node rpcclient.Client, cert lite.Certifier) (
	*ctypes.ResultABCIQuery, iavl.KeyProof, error)

GetWithProofOptions is useful if you want full access to the ABCIQueryOptions

func IsNoDataErr

func IsNoDataErr(err error) bool

IsNoDataErr checks whether an error is due to a query returning empty data