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Refs #1771 ADR: https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-044-lite-client-with-weak-subjectivity.md ## Commits: * add Verifier and VerifyCommitTrusting * add two more checks make trustLevel an option * float32 for trustLevel * check newHeader time * started writing lite Client * unify Verify methods * ensure h2.Header.bfttime < h1.Header.bfttime + tp * move trust checks into Verify function * add more comments * more docs * started writing tests * unbonding period failures * tests are green * export ErrNewHeaderTooFarIntoFuture * make golangci happy * test for non-adjusted headers * more precision * providers and stores * VerifyHeader and VerifyHeaderAtHeight funcs * fix compile errors * remove lastVerifiedHeight, persist new trusted header * sequential verification * remove TrustedStore option * started writing tests for light client * cover basic cases for linear verification * bisection tests PASS * rename BisectingVerification to SkippingVerification * refactor the code * add TrustedHeader method * consolidate sequential verification tests * consolidate skipping verification tests * rename trustedVals to trustedNextVals * start writing docs * ValidateTrustLevel func and ErrOldHeaderExpired error * AutoClient and example tests * fix errors * update doc * remove ErrNewHeaderTooFarIntoFuture This check is unnecessary given existing a) ErrOldHeaderExpired b) h2.Time > now checks. * return an error if we're at more recent height * add comments * add LastSignedHeaderHeight method to Store I think it's fine if Store tracks last height * copy over proxy from old lite package * make TrustedHeader return latest if height=0 * modify LastSignedHeaderHeight to return an error if no headers exist * copy over proxy impl * refactor proxy and start http lite client * Tx and BlockchainInfo methods * Block method * commit method * code compiles again * lite client compiles * extract updateLiteClientIfNeededTo func * move final parts * add placeholder for tests * force usage of lite http client in proxy * comment out query tests for now * explicitly mention tp: trusting period * verify nextVals in VerifyHeader * refactor bisection * move the NextValidatorsHash check into updateTrustedHeaderAndVals + update the comment * add ConsensusParams method to RPC client * add ConsensusParams to rpc/mock/client * change trustLevel type to a new cmn.Fraction type + update SkippingVerification comment * stress out trustLevel is only used for non-adjusted headers * fixes after Fede's review Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com> * compare newHeader with a header from an alternative provider * save pivot header Refs https://github.com/tendermint/tendermint/pull/3989#discussion_r349122824 * check header can still be trusted in TrustedHeader Refs https://github.com/tendermint/tendermint/pull/3989#discussion_r349101424 * lite: update Validators and Block endpoints - Block no longer contains BlockMeta - Validators now accept two additional params: page and perPage * make linter happy
163 lines
5.0 KiB
Go
163 lines
5.0 KiB
Go
package mock
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/*
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package mock returns a Client implementation that
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accepts various (mock) implementations of the various methods.
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This implementation is useful for using in tests, when you don't
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need a real server, but want a high-level of control about
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the server response you want to mock (eg. error handling),
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or if you just want to record the calls to verify in your tests.
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For real clients, you probably want the "http" package. If you
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want to directly call a tendermint node in process, you can use the
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"local" package.
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*/
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import (
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"reflect"
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cmn "github.com/tendermint/tendermint/libs/common"
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"github.com/tendermint/tendermint/rpc/client"
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"github.com/tendermint/tendermint/rpc/core"
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ctypes "github.com/tendermint/tendermint/rpc/core/types"
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rpctypes "github.com/tendermint/tendermint/rpc/lib/types"
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"github.com/tendermint/tendermint/types"
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)
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// Client wraps arbitrary implementations of the various interfaces.
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//
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// We provide a few choices to mock out each one in this package.
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// Nothing hidden here, so no New function, just construct it from
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// some parts, and swap them out them during the tests.
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type Client struct {
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client.ABCIClient
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client.SignClient
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client.HistoryClient
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client.StatusClient
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client.EventsClient
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client.EvidenceClient
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client.MempoolClient
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cmn.Service
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}
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var _ client.Client = Client{}
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// Call is used by recorders to save a call and response.
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// It can also be used to configure mock responses.
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//
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type Call struct {
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Name string
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Args interface{}
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Response interface{}
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Error error
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}
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// GetResponse will generate the apporiate response for us, when
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// using the Call struct to configure a Mock handler.
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//
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// When configuring a response, if only one of Response or Error is
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// set then that will always be returned. If both are set, then
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// we return Response if the Args match the set args, Error otherwise.
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func (c Call) GetResponse(args interface{}) (interface{}, error) {
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// handle the case with no response
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if c.Response == nil {
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if c.Error == nil {
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panic("Misconfigured call, you must set either Response or Error")
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}
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return nil, c.Error
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}
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// response without error
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if c.Error == nil {
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return c.Response, nil
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}
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// have both, we must check args....
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if reflect.DeepEqual(args, c.Args) {
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return c.Response, nil
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}
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return nil, c.Error
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}
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func (c Client) Status() (*ctypes.ResultStatus, error) {
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return core.Status(&rpctypes.Context{})
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}
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func (c Client) ABCIInfo() (*ctypes.ResultABCIInfo, error) {
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return core.ABCIInfo(&rpctypes.Context{})
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}
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func (c Client) ABCIQuery(path string, data cmn.HexBytes) (*ctypes.ResultABCIQuery, error) {
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return c.ABCIQueryWithOptions(path, data, client.DefaultABCIQueryOptions)
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}
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func (c Client) ABCIQueryWithOptions(
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path string,
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data cmn.HexBytes,
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opts client.ABCIQueryOptions) (*ctypes.ResultABCIQuery, error) {
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return core.ABCIQuery(&rpctypes.Context{}, path, data, opts.Height, opts.Prove)
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}
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func (c Client) BroadcastTxCommit(tx types.Tx) (*ctypes.ResultBroadcastTxCommit, error) {
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return core.BroadcastTxCommit(&rpctypes.Context{}, tx)
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}
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func (c Client) BroadcastTxAsync(tx types.Tx) (*ctypes.ResultBroadcastTx, error) {
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return core.BroadcastTxAsync(&rpctypes.Context{}, tx)
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}
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func (c Client) BroadcastTxSync(tx types.Tx) (*ctypes.ResultBroadcastTx, error) {
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return core.BroadcastTxSync(&rpctypes.Context{}, tx)
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}
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func (c Client) NetInfo() (*ctypes.ResultNetInfo, error) {
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return core.NetInfo(&rpctypes.Context{})
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}
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func (c Client) ConsensusState() (*ctypes.ResultConsensusState, error) {
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return core.ConsensusState(&rpctypes.Context{})
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}
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func (c Client) DumpConsensusState() (*ctypes.ResultDumpConsensusState, error) {
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return core.DumpConsensusState(&rpctypes.Context{})
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}
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func (c Client) ConsensusParams(height *int64) (*ctypes.ResultConsensusParams, error) {
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return core.ConsensusParams(&rpctypes.Context{}, height)
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}
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func (c Client) Health() (*ctypes.ResultHealth, error) {
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return core.Health(&rpctypes.Context{})
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}
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func (c Client) DialSeeds(seeds []string) (*ctypes.ResultDialSeeds, error) {
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return core.UnsafeDialSeeds(&rpctypes.Context{}, seeds)
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}
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func (c Client) DialPeers(peers []string, persistent bool) (*ctypes.ResultDialPeers, error) {
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return core.UnsafeDialPeers(&rpctypes.Context{}, peers, persistent)
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}
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func (c Client) BlockchainInfo(minHeight, maxHeight int64) (*ctypes.ResultBlockchainInfo, error) {
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return core.BlockchainInfo(&rpctypes.Context{}, minHeight, maxHeight)
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}
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func (c Client) Genesis() (*ctypes.ResultGenesis, error) {
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return core.Genesis(&rpctypes.Context{})
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}
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func (c Client) Block(height *int64) (*ctypes.ResultBlock, error) {
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return core.Block(&rpctypes.Context{}, height)
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}
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func (c Client) Commit(height *int64) (*ctypes.ResultCommit, error) {
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return core.Commit(&rpctypes.Context{}, height)
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}
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func (c Client) Validators(height *int64, page, perPage int) (*ctypes.ResultValidators, error) {
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return core.Validators(&rpctypes.Context{}, height, page, perPage)
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}
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func (c Client) BroadcastEvidence(ev types.Evidence) (*ctypes.ResultBroadcastEvidence, error) {
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return core.BroadcastEvidence(&rpctypes.Context{}, ev)
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}
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