proofs

package

v0.10.3 Latest Latest Go to latest Published: Jun 28, 2017 License: Apache-2.0 Imports: 11 Imported by: 2

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Repository

github.com/tendermint/light-client

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Documentation ¶

Index ¶

Constants
func ParseHexKey(str string) ([]byte, error)
func ValidateBlock(meta *types.Block, check lc.Checkpoint) error
func ValidateBlockMeta(meta *types.BlockMeta, check lc.Checkpoint) error
func ValidateHeader(head *types.Header, check lc.Checkpoint) error
type AppProof
- func (p AppProof) BlockHeight() uint64
- func (p AppProof) Data() []byte
- func (p AppProof) Marshal() ([]byte, error)
- func (p AppProof) Validate(check lc.Checkpoint) error
type AppProver
- func NewAppProver(node client.Client) AppProver
- func (a AppProver) Get(key []byte, h uint64) (lc.Proof, error)
- func (a AppProver) Unmarshal(data []byte) (lc.Proof, error)
type KeyMaker
- func (k KeyMaker) MakeKey(str string) ([]byte, error)
type Presenter
type Presenters
- func NewPresenters() Presenters
- func (p Presenters) BruteForce(raw []byte) (interface{}, error)
- func (p Presenters) Lookup(app string) (Presenter, error)
- func (p Presenters) Register(app string, pres Presenter)
type RawPresenter
- func (p RawPresenter) ParseData(raw []byte) (interface{}, error)
type TxProof
- func (p TxProof) BlockHeight() uint64
- func (p TxProof) Data() []byte
- func (p TxProof) Marshal() ([]byte, error)
- func (p TxProof) Validate(check lc.Checkpoint) error
type TxProver
- func NewTxProver(node client.Client) TxProver
- func (t TxProver) Get(key []byte, h uint64) (lc.Proof, error)
- func (t TxProver) Unmarshal(data []byte) (pr lc.Proof, err error)

Constants ¶

View Source

const Raw = "raw"

Variables ¶

This section is empty.

Functions ¶

func ParseHexKey ¶ added in v0.10.1

func ParseHexKey(str string) ([]byte, error)

func ValidateBlock ¶ added in v0.10.0

func ValidateBlock(meta *types.Block, check lc.Checkpoint) error

func ValidateBlockMeta ¶ added in v0.10.0

func ValidateBlockMeta(meta *types.BlockMeta, check lc.Checkpoint) error

func ValidateHeader ¶ added in v0.10.0

func ValidateHeader(head *types.Header, check lc.Checkpoint) error

Types ¶

type AppProof ¶

type AppProof struct {
	Height uint64
	Key    data.Bytes
	Value  data.Bytes
	Proof  data.Bytes
}

AppProof containts a key-value pair at a given height. It also contains the merkle proof from that key-value pair to the root hash, which can be verified against a signed header.

func (AppProof) BlockHeight ¶

func (p AppProof) BlockHeight() uint64

func (AppProof) Data ¶ added in v0.10.0

func (p AppProof) Data() []byte

func (AppProof) Marshal ¶

func (p AppProof) Marshal() ([]byte, error)

func (AppProof) Validate ¶

func (p AppProof) Validate(check lc.Checkpoint) error

type AppProver ¶

type AppProver struct {
	// contains filtered or unexported fields
}

AppProver provides positive proofs of key-value pairs in the abciapp.

TODO: also support negative proofs (this key is not set)

func NewAppProver ¶

func NewAppProver(node client.Client) AppProver

func (AppProver) Get ¶

func (a AppProver) Get(key []byte, h uint64) (lc.Proof, error)

Get tries to download a merkle hash for app state on this key from the tendermint node.

func (AppProver) Unmarshal ¶

func (a AppProver) Unmarshal(data []byte) (lc.Proof, error)

type KeyMaker ¶ added in v0.10.0

type KeyMaker struct {
	Prefix []byte
}

KeyMaker can be embedded for a basic and flexible key encoder

func (KeyMaker) MakeKey ¶ added in v0.10.0

func (k KeyMaker) MakeKey(str string) ([]byte, error)

type Presenter ¶ added in v0.10.0

type Presenter interface {
	MakeKey(string) ([]byte, error)
	ParseData([]byte) (interface{}, error)
}

Presenter allows us to encode queries and parse results in an app-specific way

type Presenters ¶ added in v0.10.0

type Presenters map[string]Presenter

func NewPresenters ¶ added in v0.10.0

func NewPresenters() Presenters

NewPresenters gives you a default raw presenter

func (Presenters) BruteForce ¶ added in v0.10.0

func (p Presenters) BruteForce(raw []byte) (interface{}, error)

BruteForce will try all regitered parsers in random order, before calling RawPresenter. Use if we have no idea how to interpret the data (eg. decoding all tx in a block)

func (Presenters) Lookup ¶ added in v0.10.0

func (p Presenters) Lookup(app string) (Presenter, error)

Lookup tries to find a registered presenter, or the raw presenter

func (Presenters) Register ¶ added in v0.10.0

func (p Presenters) Register(app string, pres Presenter)

Register adds this app to the lookup table to parse it

type RawPresenter ¶ added in v0.10.0

type RawPresenter struct {
	KeyMaker
}

RawPresenter just hex-encodes/decodes text. Useful as default, or to embed in other structs for the MakeKey implementation

If you set a prefix, it will be prepended to all your data after hex-decoding them

func (RawPresenter) ParseData ¶ added in v0.10.0

func (p RawPresenter) ParseData(raw []byte) (interface{}, error)

ParseData on the raw-presenter, just provides a hex-encoding of the bytes

type TxProof ¶

type TxProof struct {
	Height uint64
	Proof  types.TxProof
}

TxProof checks ALL txs for one block... we need a better way!

func (TxProof) BlockHeight ¶

func (p TxProof) BlockHeight() uint64

func (TxProof) Data ¶ added in v0.10.0

func (p TxProof) Data() []byte

func (TxProof) Marshal ¶

func (p TxProof) Marshal() ([]byte, error)

func (TxProof) Validate ¶

func (p TxProof) Validate(check lc.Checkpoint) error

type TxProver ¶

type TxProver struct {
	// contains filtered or unexported fields
}

TxProver provides positive proofs of key-value pairs in the abciapp.

TODO: also support negative proofs (this key is not set)

func NewTxProver ¶

func NewTxProver(node client.Client) TxProver

func (TxProver) Get ¶

func (t TxProver) Get(key []byte, h uint64) (lc.Proof, error)

Get tries to download a merkle hash for app state on this key from the tendermint node.

Important: key must be Tx.Hash() Height is completely ignored for now :(

func (TxProver) Unmarshal ¶

func (t TxProver) Unmarshal(data []byte) (pr lc.Proof, err error)

Source Files ¶

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