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
* Add pagination to /validators
- closes#3472
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* add swagger params, default returns all
* address pr comments
* golint fix
* swagger default change, change to default in comment
* swagger.yaml: replace x-example with example
https://swagger.io/docs/specification/adding-examples/
* Revert "swagger.yaml: replace x-example with example"
This reverts commit 9df1b006de.
* update changelog and remove extra body close
* Fix long line errors in abci, crypto, and libs packages
* Fix long lines in p2p and rpc packages
* Fix long lines in abci, state, and tools packages
* Fix long lines in behaviour and blockchain packages
* Fix long lines in cmd and config packages
* Begin fixing long lines in consensus package
* Finish fixing long lines in consensus package
* Add lll exclusion for lines containing URLs
* Fix long lines in crypto package
* Fix long lines in evidence package
* Fix long lines in mempool and node packages
* Fix long lines in libs package
* Fix long lines in lite package
* Fix new long line in node package
* Fix long lines in p2p package
* Ignore gocritic warning
* Fix long lines in privval package
* Fix long lines in rpc package
* Fix long lines in scripts package
* Fix long lines in state package
* Fix long lines in tools package
* Fix long lines in types package
* Enable lll linter
I think it's nice when the Client interface has all the methods. If someone does not need a particular method/set of methods, she can use individual interfaces (e.g. NetworkClient, MempoolClient) or write her own interface.
technically breaking
Fixes#3458
* limit number of /subscribe clients and queries per client
Add the following config variables (under [rpc] section):
* max_subscription_clients
* max_subscriptions_per_client
* timeout_broadcast_tx_commit
Fixes#2826
new HTTPClient interface for subscriptions
finalize HTTPClient events interface
remove EventSubscriber
fix data race
```
WARNING: DATA RACE
Read at 0x00c000a36060 by goroutine 129:
github.com/tendermint/tendermint/rpc/client.(*Local).Subscribe.func1()
/go/src/github.com/tendermint/tendermint/rpc/client/localclient.go:168 +0x1f0
Previous write at 0x00c000a36060 by goroutine 132:
github.com/tendermint/tendermint/rpc/client.(*Local).Subscribe()
/go/src/github.com/tendermint/tendermint/rpc/client/localclient.go:191 +0x4e0
github.com/tendermint/tendermint/rpc/client.WaitForOneEvent()
/go/src/github.com/tendermint/tendermint/rpc/client/helpers.go:64 +0x178
github.com/tendermint/tendermint/rpc/client_test.TestTxEventsSentWithBroadcastTxSync.func1()
/go/src/github.com/tendermint/tendermint/rpc/client/event_test.go:139 +0x298
testing.tRunner()
/usr/local/go/src/testing/testing.go:827 +0x162
Goroutine 129 (running) created at:
github.com/tendermint/tendermint/rpc/client.(*Local).Subscribe()
/go/src/github.com/tendermint/tendermint/rpc/client/localclient.go:164 +0x4b7
github.com/tendermint/tendermint/rpc/client.WaitForOneEvent()
/go/src/github.com/tendermint/tendermint/rpc/client/helpers.go:64 +0x178
github.com/tendermint/tendermint/rpc/client_test.TestTxEventsSentWithBroadcastTxSync.func1()
/go/src/github.com/tendermint/tendermint/rpc/client/event_test.go:139 +0x298
testing.tRunner()
/usr/local/go/src/testing/testing.go:827 +0x162
Goroutine 132 (running) created at:
testing.(*T).Run()
/usr/local/go/src/testing/testing.go:878 +0x659
github.com/tendermint/tendermint/rpc/client_test.TestTxEventsSentWithBroadcastTxSync()
/go/src/github.com/tendermint/tendermint/rpc/client/event_test.go:119 +0x186
testing.tRunner()
/usr/local/go/src/testing/testing.go:827 +0x162
==================
```
lite client works (tested manually)
godoc comments
httpclient: do not close the out channel
use TimeoutBroadcastTxCommit
no timeout for unsubscribe
but 1s Local (5s HTTP) timeout for resubscribe
format code
change Subscribe#out cap to 1
and replace config vars with RPCConfig
TimeoutBroadcastTxCommit can't be greater than rpcserver.WriteTimeout
rpc: Context as first parameter to all functions
reformat code
fixes after my own review
fixes after Ethan's review
add test stubs
fix config.toml
* fixes after manual testing
- rpc: do not recommend to use BroadcastTxCommit because it's slow and wastes
Tendermint resources (pubsub)
- rpc: better error in Subscribe and BroadcastTxCommit
- HTTPClient: do not resubscribe if err = ErrAlreadySubscribed
* fixes after Ismail's review
* Update rpc/grpc/grpc_test.go
Co-Authored-By: melekes <anton.kalyaev@gmail.com>
comment out failing consensus tests for now
rewrite rpc httpclient to use new pubsub package
import pubsub as tmpubsub, query as tmquery
make event IDs constants
EventKey -> EventTypeKey
rename EventsPubsub to PubSub
mempool does not use pubsub
rename eventsSub to pubsub
new subscribe API
fix channel size issues and consensus tests bugs
refactor rpc client
add missing discardFromChan method
add mutex
rename pubsub to eventBus
remove IsRunning from WSRPCConnection interface (not needed)
add a comment in broadcastNewRoundStepsAndVotes
rename registerEventCallbacks to broadcastNewRoundStepsAndVotes
See https://dave.cheney.net/2014/03/19/channel-axioms
stop eventBuses after reactor tests
remove unnecessary Unsubscribe
return subscribe helper function
move discardFromChan to where it is used
subscribe now returns an err
this gives us ability to refuse to subscribe if pubsub is at its max
capacity.
use context for control overflow
cache queries
handle err when subscribing in replay_test
rename testClientID to testSubscriber
extract var
set channel buffer capacity to 1 in replay_file
fix byzantine_test
unsubscribe from single event, not all events
refactor httpclient to return events to appropriate channels
return failing testReplayCrashBeforeWriteVote test
fix TestValidatorSetChanges
refactor code a bit
fix testReplayCrashBeforeWriteVote
add comment
fix TestValidatorSetChanges
fixes from Bucky's review
update comment [ci skip]
test TxEventBuffer
update changelog
fix TestValidatorSetChanges (2nd attempt)
only do wg.Done when no errors
benchmark event bus
create pubsub server inside NewEventBus
only expose config params (later if needed)
set buffer capacity to 0 so we are not testing cache
new tx event format: key = "Tx" plus a tag {"tx.hash": XYZ}
This should allow to subscribe to all transactions! or a specific one
using a query: "tm.events.type = Tx and tx.hash = '013ABF99434...'"
use TimeoutCommit instead of afterPublishEventNewBlockTimeout
TimeoutCommit is the time a node waits after committing a block, before
it goes into the next height. So it will finish everything from the last
block, but then wait a bit. The idea is this gives it time to hear more
votes from other validators, to strengthen the commit it includes in the
next block. But it also gives it time to hear about new transactions.
waitForBlockWithUpdatedVals
rewrite WAL crash tests
Task:
test that we can recover from any WAL crash.
Solution:
the old tests were relying on event hub being run in the same thread (we
were injecting the private validator's last signature).
when considering a rewrite, we considered two possible solutions: write
a "fuzzy" testing system where WAL is crashing upon receiving a new
message, or inject failures and trigger them in tests using something
like https://github.com/coreos/gofail.
remove sleep
no cs.Lock around wal.Save
test different cases (empty block, non-empty block, ...)
comments
add comments
test 4 cases: empty block, non-empty block, non-empty block with smaller part size, many blocks
fixes as per Bucky's last review
reset subscriptions on UnsubscribeAll
use a simple counter to track message for which we panicked
also, set a smaller part size for all test cases
Anton Kaliaev
Marko
Phil Salant
Joon
Dev Ojha
Zach Ramsay
Ethan Buchman
Liamsi
Emmanuel Odeke
Ethan Frey