* libs/common: Refactor libs/common 4
- move byte function out of cmn to its own pkg
- move tempfile out of cmn to its own pkg
- move throttletimer to its own pkg
ref #4147
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* add changelog entry
* fix linting issues
* libs/common: refactor libs common 3
- move nil.go into types folder and make private
- move service & baseservice out of common into service pkg
ref #4147
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* add changelog entry
* libs/common: refactor libs/common 2
- move random function to there own pkg
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* change imports and usage throughout repo
* fix goimports
* add changelog entry
* libs/common: Refactor libs/common 01
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* regenerate proto files, move intslice to where its used
* update kv.KVPair(s) to kv.Pair(s)
* add changelog entry
* make intInSlice private
* Rename Tag(s) to Event(s)
- tag was replaced with event, but in some places it still mentions tag, would be easier to understand if we tried to replace it with event to not confuse people.
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* more changes from tag -> event
* rename events to compositeKeys and keys
* Apply suggestions from code review
Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>
* add minor documentation on how composite keys are constructed
* rename eventkey to compositekey
Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>
* add changelog entry & add info to regenerate confid to changelog entry
Fix for #4164
The general problem is that in certain conditions an overflow warning is issued when attempting to update a validator set even if the final set's total voting power is not over the maximum allowed.
Root cause is that in verifyUpdates(), updates are verified wrt to total voting power in the order of validator address. It is then possible that a low address validator may increase its power such that the temporary total voting power count goes over MaxTotalVotingPower.
Scenarios where removing and adding/ updating validators with high voting power, in the same update operation, cause the same false warning and the updates are not applied.
Main changes to fix this are in verifyUpdate() that now does the verification starting with the decreases in power. It also takes into account the removals that are part of the update.
## Commits:
* tests for overflow detection and prevention
* test fix
* more tests
* fix the false overflow warnings and golint
* scopelint warning fix
* review comments
* variant with using sort by amount of change in power
* compute separately number new validators in update
* types: use a switch in processChanges
* more review comments
* types: use HasAddress in numNewValidators
* types: refactor verifyUpdates
copy updates, sort them by delta and use resulting slice to calculate
tvpAfterUpdatesBeforeRemovals.
* remove unused structs
* review comments
* update changelog
* types: change `Commit` to consist of just signatures
These are final changes towards removing votes from commit and leaving
only signatures (see ADR-25)
Fixes#1648
* bring back TestCommitToVoteSetWithVotesForAnotherBlockOrNilBlock
+ add absent flag to Vote to indicate that it's for another block
* encode nil votes as CommitSig with BlockIDFlagAbsent
+ make Commit#Precommits array of non-pointers
because precommit will never be nil
* add NewCommitSigAbsent and Absent() funcs
* uncomment validation in CommitSig#ValidateBasic
* add comments to ValidatorSet funcs
* add a changelog entry
* break instead of continue
continue does not make sense in these cases
* types: rename Commit#Precommits to Signatures
* swagger: fix /commit response
* swagger: change block_id_flag type
* fix merge conflicts
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
Fixes#3986
This pull request is prefixing all the types in proto to avoid conflict.
When a go application is using Tendermint as a library and also define similar types in gogo proto some conflicts might occur (as types is a common package in go).
By prefixing the types with tendermint, this highly reduces the risk of conflicts.
BREAKING CHANGE.
This modification breaks the ABCI Application endpoint.
What was accessible before with `/types.ABCIApplication/Flush` is now accessible with `/tendermint.abci.types.ABCIApplication/Flush`.
## Issue:
Removed BlockMeta in ResultBlock in favor of BlockId for /block
Added block_size to BlockMeta this is reflected in /blockchain
fixes#3188
added breaking as some clients may be using header from blockmeta instead of block in /block
## Commits:
* cleanup block path
Remove duplication of data in `/block`
fixes#3188
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* Remove duplication of data in `/block`
- Created a secondary type to be used for /block
fixes#3188
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* remove commented out code
* fix ci
* add changelog_pending entry
* remove extra variable
* update swagger
* change int to uint for blocksize
* fix swagger
* remove extensive comments
* update changelog
* fix conflicts after merge
* use int for BlockSize and NumTxs in BlockMeta
- with 99.9% guarantee, the size of either will never reach int32
- most of the Go "Size" stdlib functions return int
* Removal of TotalTx & NumTx
- Removed totalTx and numTx
closes#2521
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* abci proto changes
* proto number fix
* txfilter_test fix
* comments on PR
* further changes
* bring back metrics
* fix indexer
* fix TestBlockMaxDataBytes and TestBlockMaxDataBytesUnknownEvidence
* indexer service back to header
* statistics.go fix
* fix ci
* listen for blocks, not headers
to be able to record txs throughput
* fix TestNetworkNewBlock
* fix tests
* fix tests in types package
* fixes after Anton's review
* fix tests
* bring back `consensus_total_txs` metric
I mistakenly thought it was removed.
* improve changelog
* remove LastBlockTotalTx from state
* docs: remove getNumTxs from BeginBlock Java example
* crypto: expose MaxAunts for documentation purposes
* types: update godoc for new maxes
* docs: make hard-coded limits more explicit
* wal: add todo to clarify max size
* shorten lines in test
* cs: panic only when WAL#WriteSync fails
- modify WAL#Write and WAL#WriteSync to return an error
* fix test
* types: validate Part#Proof
add ValidateBasic to crypto/merkle/SimpleProof
* cs: limit max bit array size and block parts count
* cs: test new limits
* cs: only assert important stuff
* update changelog and bump version to 0.32.7
* fixes after Ethan's review
* align max wal msg and max consensus msg sizes
* fix tests
* fix test
* add change log for 31.11
* 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
* Remove omitempty from *pb.go
- remove omitempty from *pb.go files
- added command to makefile for everytime `make protoc_all` is run
- open question:
- Do we want to further remove omitempty from other places
- https://github.com/tendermint/tendermint/blob/master/rpc/lib/types/types.go#L151
- and other places
ref #3882
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* bring back omitempty to *pb.go
* Update types/tx.go
* custom marshlers
* undo benchmark `omitepmty`
* golangci lint fix
* cleanup comments
* changelog_pending entry
* types: add test for block commits with votes for the wrong blockID
* remove
* respond to feedback
* verify the commits as well
* testing table
* Update types/block_test.go
Co-Authored-By: Bot from GolangCI <42910462+golangcibot@users.noreply.github.com>
* Update types/block_test.go
Co-Authored-By: Bot from GolangCI <42910462+golangcibot@users.noreply.github.com>
* gofmt
* test panic case
* Pin range scope vars
* Don't disable scopelint
This PR repairs linter errors seen when running the following commands:
golangci-lint run --no-config --disable-all=true --enable=scopelint
Contributes to #3262
This should've been a part of
https://github.com/tendermint/tendermint/pull/3960, but I forgot about
it while reviewing.
A good programmer is someone who always looks both ways before crossing
a one-way street. - Doug Linder
* Remove unnecessary type conversions
* Consolidate repeated strings into consts
* Clothe return statements
* Update blockchain/v1/reactor_fsm_test.go
Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>
This PR repairs linter errors seen when running the following commands:
golangci-lint run --no-config --disable-all=true --enable=unconvert
golangci-lint run --no-config --disable-all=true --enable=goconst
golangci-lint run --no-config --disable-all=true --enable=nakedret
Contributes to #3262
* Add test for bcBlockRequestMessage ValidateBasic method
* Add test for bcNoBlockResponseMessage ValidateBasic method
* Add test for bcStatusRequestMessage ValidateBasic method
* Add test for bcStatusResponseMessage ValidateBasic method
* Add blockchain v1 reactor ValidateBasic tests
* Add test for NewRoundStepMessage ValidateBasic method
* Add test for NewValidBlockMessage ValidateBasic method
* Test BlockParts Size
* Import cmn package
* Add test for ProposalPOLMessage ValidateBasic method
* Add test for BlockPartMessage ValidateBasic method
* Add test for HasVoteMessage ValidateBasic method
* Add test for VoteSetMaj23Message ValidateBasic method
* Add test for VoteSetBitsMessage ValidateBasic method
* Fix linter errors
* Improve readability
* Add test for BaseConfig ValidateBasic method
* Add test for RPCConfig ValidateBasic method
* Add test for P2PConfig ValidateBasic method
* Add test for MempoolConfig ValidateBasic method
* Add test for FastSyncConfig ValidateBasic method
* Add test for ConsensusConfig ValidateBasic method
* Add test for InstrumentationConfig ValidateBasic method
* Add test for BlockID ValidateBasic method
* Add test for SignedHeader ValidateBasic method
* Add test for MockGoodEvidence and MockBadEvidence ValidateBasic methods
* Remove debug logging
Co-Authored-By: Marko <marbar3778@yahoo.com>
* Update MempoolConfig field
* Test a single struct field at a time, for maintainability
Fixes#2740
* init of (2/2) common errors
* Remove instances of cmn.Error (2/2)
- Replace usage of cmnError and errorWrap
- ref #3862
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* comment wording
* simplify IsErrXXX functions
* log panic along with stopping the MConnection
* (1/2) of replace errors.go with github.com/pkg/errors
ref #3862
- step one in removing instances of errors.go in favor of github.com/pkg/errors
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* gofmt
* add in /store
This PR is related to #3107 and a continuation of #3351
It is important to emphasise that in the privval original design, client/server and listening/dialing roles are inverted and do not follow a conventional interaction.
Given two hosts A and B:
Host A is listener/client
Host B is dialer/server (contains the secret key)
When A requires a signature, it needs to wait for B to dial in before it can issue a request.
A only accepts a single connection and any failure leads to dropping the connection and waiting for B to reconnect.
The original rationale behind this design was based on security.
Host B only allows outbound connections to a list of whitelisted hosts.
It is not possible to reach B unless B dials in. There are no listening/open ports in B.
This PR results in the following changes:
Refactors ping/heartbeat to avoid previously existing race conditions.
Separates transport (dialer/listener) from signing (client/server) concerns to simplify workflow.
Unifies and abstracts away the differences between unix and tcp sockets.
A single signer endpoint implementation unifies connection handling code (read/write/close/connection obj)
The signer request handler (server side) is customizable to increase testability.
Updates and extends unit tests
A high level overview of the classes is as follows:
Transport (endpoints): The following classes take care of establishing a connection
SignerDialerEndpoint
SignerListeningEndpoint
SignerEndpoint groups common functionality (read/write/timeouts/etc.)
Signing (client/server): The following classes take care of exchanging request/responses
SignerClient
SignerServer
This PR also closes#3601
Commits:
* refactoring - work in progress
* reworking unit tests
* Encapsulating and fixing unit tests
* Improve tests
* Clean up
* Fix/improve unit tests
* clean up tests
* Improving service endpoint
* fixing unit test
* fix linter issues
* avoid invalid cache values (improve later?)
* complete implementation
* wip
* improved connection loop
* Improve reconnections + fixing unit tests
* addressing comments
* small formatting changes
* clean up
* Update node/node.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* Update privval/signer_client.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* Update privval/signer_client_test.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* check during initialization
* dropping connecting when writing fails
* removing break
* use t.log instead
* unifying and using cmn.GetFreePort()
* review fixes
* reordering and unifying drop connection
* closing instead of signalling
* refactored service loop
* removed superfluous brackets
* GetPubKey can return errors
* Revert "GetPubKey can return errors"
This reverts commit 68c06f19b4.
* adding entry to changelog
* Update CHANGELOG_PENDING.md
Co-Authored-By: jleni <juan.leni@zondax.ch>
* Update privval/signer_client.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* Update privval/signer_dialer_endpoint.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* Update privval/signer_dialer_endpoint.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* Update privval/signer_dialer_endpoint.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* Update privval/signer_dialer_endpoint.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* Update privval/signer_listener_endpoint_test.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* updating node.go
* review fixes
* fixes linter
* fixing unit test
* small fixes in comments
* addressing review comments
* addressing review comments 2
* reverting suggestion
* Update privval/signer_client_test.go
Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>
* Update privval/signer_client_test.go
Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>
* Update privval/signer_listener_endpoint_test.go
Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>
* do not expose brokenSignerDialerEndpoint
* clean up logging
* unifying methods
shorten test time
signer also drops
* reenabling pings
* improving testability + unit test
* fixing go fmt + unit test
* remove unused code
* Addressing review comments
* simplifying connection workflow
* fix linter/go import issue
* using base service quit
* updating comment
* Simplifying design + adjusting names
* fixing linter issues
* refactoring test harness + fixes
* Addressing review comments
* cleaning up
* adding additional error check
Add gocritic as a linter
The linting is not complete, but should i complete in this PR or in a following.
23 files have been touched so it may be better to do in a following PR
Commits:
* Add gocritic to linting
- Added gocritic to linting
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* gocritic
* pr comments
* remove switch in cmdBatch
cleanup to add linter
grpc change:
https://godoc.org/google.golang.org/grpc#WithContextDialerhttps://godoc.org/google.golang.org/grpc#WithDialer
grpc/grpc-go#2627
prometheous change:
due to UninstrumentedHandler, being deprecated in the future
empty branch = empty if or else statement
didn't delete them entirely but commented
couldn't find a reason to have them
could not replicate the issue #3406
but if want to keep it commented then we should comment out the if statement as well
* Renamed wire.go to codec.go
- Wire was the previous name of amino
- Codec describes the file better than `wire` & `amino`
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* ide error
* rename amino.go to codec.go
* more minor cleanup of libs
Remove unused `version.go`, `assert.go` and `libs/circle.yml`
* Update types/vote_set_test.go
Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>
* spelling change
* Expose priv validators for use in testing
* Generalize block header validation test past height 1
* Remove ineffectual assignment
* Remove redundant SaveState call
* Reorder comment for clarity
* Use the block executor ApplyBlock function instead of implementing a stripped-down version of it
* Remove commented-out code
* Remove unnecessary test
The required tests already appear to be implemented (implicitly) through
the TestValidateBlockHeader test.
* Allow for catching of specific error types during TestValidateBlockCommit
* Make return error testable
* Clean up and add TestValidateBlockCommit code
* Fix formatting
* Extract function to create a new mock test app
* Update comment for clarity
* Fix comment
* Add skeleton code for evidence-related test
* Allow for addressing priv val by address
* Generalize test beyond a single validator
* Generalize TestValidateBlockEvidence past first height
* Reorder code to clearly separate tests and utility code
* Use a common constant for stop height for testing in state/validation_test.go
* Refactor errors to resemble existing conventions
* Fix formatting
* Extract common helper functions
Having the tests littered with helper functions makes them less easily
readable imho, so I've pulled them out into a separate file. This also
makes it easier to see what helper functions are available during
testing, so we minimize the chance of duplication when writing new
tests.
* Remove unused parameter
* Remove unused parameters
* Add field keys
* Remove unused height constant
* Fix typo
* Fix incorrect return error
* Add field keys
* Use separate package for tests
This refactors all of the state package's tests into a state_test
package, so as to keep any usage of the state package's internal methods
explicit.
Any internal methods/constants used by tests are now explicitly exported
in state/export_test.go
* Refactor: extract helper function to make, validate, execute and commit a block
* Rename state function to makeState
* Remove redundant constant for number of validators
* Refactor mock evidence registration into TestMain
* Remove extraneous nVals variable
* Replace function-level TODOs with file-level TODO and explanation
* Remove extraneous comment
* Fix linting issues brought up by GolangCI (pulled in from latest merge from develop)
## PR
This PR introduces a fundamental breaking change to the structure of ABCI response and tx tags and the way they're processed. Namely, the SDK can support more complex and aggregated events for distribution and slashing. In addition, block responses can include duplicate keys in events.
Implement new Event type. An event has a type and a list of KV pairs (ie. list-of-lists). Typical events may look like:
"rewards": [{"amount": "5000uatom", "validator": "...", "recipient": "..."}]
"sender": [{"address": "...", "balance": "100uatom"}]
The events are indexed by {even.type}.{even.attribute[i].key}/.... In this case a client would subscribe or query for rewards.recipient='...'
ABCI response types and related types now include Events []Event instead of Tags []cmn.KVPair.
PubSub logic now publishes/matches against map[string][]string instead of map[string]string to support duplicate keys in response events (from #1385). A match is successful if the value is found in the slice of strings.
closes: #1859closes: #2905
## Commits:
* Implement Event ABCI type and updates responses to use events
* Update messages_test.go
* Update kvstore.go
* Update event_bus.go
* Update subscription.go
* Update pubsub.go
* Update kvstore.go
* Update query logic to handle slice of strings in events
* Update Empty#Matches and unit tests
* Update pubsub logic
* Update EventBus#Publish
* Update kv tx indexer
* Update godocs
* Update ResultEvent to use slice of strings; update RPC
* Update more tests
* Update abci.md
* Check for key in validateAndStringifyEvents
* Fix KV indexer to skip empty keys
* Fix linting errors
* Update CHANGELOG_PENDING.md
* Update docs/spec/abci/abci.md
Co-Authored-By: Federico Kunze <31522760+fedekunze@users.noreply.github.com>
* Update abci/types/types.proto
Co-Authored-By: Ethan Buchman <ethan@coinculture.info>
* Update docs/spec/abci/abci.md
Co-Authored-By: Ethan Buchman <ethan@coinculture.info>
* Update libs/pubsub/query/query.go
Co-Authored-By: Ethan Buchman <ethan@coinculture.info>
* Update match function to match if ANY value matches
* Implement TestSubscribeDuplicateKeys
* Update TestMatches to include multi-key test cases
* Update events.go
* Update Query interface godoc
* Update match godoc
* Add godoc for matchValue
* DRY-up tx indexing
* Return error from PublishWithEvents in EventBus#Publish
* Update PublishEventNewBlockHeader to return an error
* Fix build
* Update events doc in ABCI
* Update ABCI events godoc
* Implement TestEventBusPublishEventTxDuplicateKeys
* Update TestSubscribeDuplicateKeys to be table-driven
* Remove mod file
* Remove markdown from events godoc
* Implement TestTxSearchDeprecatedIndexing test
* update changelog
* Update changelog
- less detail about internal stuff like the `mempool`
- focus BUG FIX entries more on what was fixed rather than how
* minor cleanup.
- remove entry for GenesisDocProvider, it's being undone
* minor fix
* VoteSignBytes builds CanonicalVote
* CommitVotes implements VoteSetReader
- new CommitVotes struct holds both the Commit and the ValidatorSet and
implements VoteSetReader
- ToVote takes a ValidatorSet
* fix TestCommit
* use CommitSig.BlockID
Commits may include votes for a different BlockID, could be nil,
or different altogether. This means we can't use `commit.BlockID`
for reconstructing the sign bytes, since up to -1/3 of the commits
might be for independent BlockIDs. This means CommitSig will need to
include an indicator for what BlockID it signed - if it's not the
committed one or nil, it will need to include it fully in order to be
verified. This is unfortunate but unavoidable so long as we include
votes for non-committed BlockIDs (which we do to track validator
liveness)
* fixes from review
* remove CommitVotes. CommitSig contains address
* remove commit.canonicalVote method
* toVote -> getVote, takes valIdx
* update adr-025
* commit.ToVoteSet -> CommitToVoteSet
* add test
* fix from review
* Remove deprecated PanicXXX functions from codebase
As per discussion over
[here](https://github.com/tendermint/tendermint/pull/3456#discussion_r278423492),
we need to remove these `PanicXXX` functions and eliminate our
dependence on them. In this PR, each and every `PanicXXX` function call
is replaced with a simple `panic` call.
* add a changelog entry