## Description
We decided to remove middlewares, and revert to antehandlers (exactly like in v045) for this release. A better middleware solution will be implemented after v046.
ref: #11955
Because this refactor is big, so I decided to cut it into two. This PR is part 1 of 2:
- part 1: Revert baseapp and middlewares to v0.45.4
- part 2: Add posthandler, tips, priority
---
Suggestion for reviewers:
This PR might still be hard to review though. I think it's easier to actually review the diff between v0.45.4 and this PR:
- `git difftool -d v0.45.4..am/revert-045-baseapp baseapp`
- most important parts to review: runTx, runMsgs
- `git difftool -d v0.45.4..am/revert-045-baseapp x/auth/ante`
- only cosmetic changes
- `git difftool -d v0.45.4..am/revert-045-baseapp simapp`
---
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## Description
ref: #9585
This PR if the 1st step (out of 2) in the #9585 refactor. It transforms baseapp's ABCI {Check,Deliver}Tx into middleware stacks. A middleware is defined by the following interfaces:
```go
// types/tx package
type Handler interface {
CheckTx(ctx context.Context, tx sdk.Tx, req abci.RequestCheckTx) (abci.ResponseCheckTx, error)
DeliverTx(ctx context.Context, tx sdk.Tx, req abci.RequestDeliverTx) (abci.ResponseDeliverTx, error)
SimulateTx(ctx context.Context, tx sdk.Tx, req RequestSimulateTx) (ResponseSimulateTx, error)
}
type Middleware func(Handler) Handler
```
This Pr doesn't migrate antehandlers, but only baseapp's runTx and runMsgs as middlewares. It bundles antehandlers into one single middleware (for now).
More specifically, it introduces the 5 following middlewares:
| Middleware | Description |
| ----------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| RunMsgsTxMiddleware | This middleware replaces the old baseapp's `runMsgs`. |
| LegacyAnteMiddleware | This middleware is temporary, it bundles all antehandlers into one middleware. It's only created for the purpose of breaking the refactor into 2 pieces. **It will be removed in Part 2**, and each antehandler will be replaced by its own middleware. |
| IndexEventsTxMiddleware | This is a simple middleware that chooses which events to index in Tendermint. Replaces `baseapp.indexEvents` (which unfortunately still exists in baseapp too, because it's used to index Begin/EndBlock events) |
| RecoveryTxMiddleware | This index recovers from panics. It replaces baseapp.runTx's panic recovery. |
| GasTxMiddleware | This replaces the [`Setup`](https://github.com/cosmos/cosmos-sdk/blob/master/x/auth/ante/setup.go) Antehandler. It sets a GasMeter on sdk.Context. Note that before, GasMeter was set on sdk.Context inside the antehandlers, and there was some mess around the fact that antehandlers had their own panic recovery system so that the GasMeter could be read by baseapp's recovery system. Now, this mess is all removed: one middleware sets GasMeter, another one handles recovery. |
---
### Author Checklist
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I have...
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- [x] added `!` to the type prefix if API or client breaking change
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- [x] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [x] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [x] added a changelog entry to `CHANGELOG.md`
- [x] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [x] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed
### Reviewers Checklist
*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*
I have...
- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)
* first commit
* gaia cleanup
* ...
* staking multihooks
* missing module function return args
* bank module name constant
* working, module interface for x/
* got this thing compiling
* make test compiles and passes
* remove expanded simulation invariants
* genesis issue
* continued
* continued
* register crisis routes thought mm
* begin blocker to mm
* end blocker to mm
* empty routes not initialized
* move gaia initChainer sanity check to baseapp
* remove codecs from module manager
* reorging genesis stuff
* module manager passed by reference/bugfixes from working last commit
int
int
* move invariant checks from gaia to crisis
* typo
* basic refactors cmd/gaia/init
* working
* MultiStakingHooks from types to x/staking/types
int
* default module manager order of operations from input modules
* working
* typo
* add AppModuleBasic
* moduleBasicManager / non-test code compiles
* working attempting to get tests passing
* make test passes
* sim random genesis fix
* export bug
* ...
* genutil module
* genutil working
* refactored - happy with non-testing code in cmd/
* ...
* lint fixes
* comment improvement
* cli test fix
* compile housing
* working through compile errors
* working gettin' compilin'
* non-test code compiles
* move testnet to its own module
* reworking tests
int
* bez staging PR 1 comments
* concise module function-of names
* moved all tests from genesis_test.go to other genutil tests
* genaccounts package, add genutil and genaccounts to app.go
* docs for genutil genaccounts
* genaccounts iterate fn
* non-test code with genaccounts/ now compiles
* working test compiling
* debugging tests
* resolved all make test compile errors
* test debuggin
* resolved all unit tests, introduced param module
* cli-test compile fixes
* staking initialization bug
* code comment improvements, changelog entries
* BasicGaiaApp -> ModuleBasics
* highlevel explanation in types/module.go
* @alexanderbez comment revisions
* @fedekunze PR comments
* @alexanderbez PR comments (x2)
* @cwgoes comments (minor updates)
* @fedekunze suggestions
* panic on init with multiple validator updates from different modules
* initchain panic makes validate genesis fail
int
* AppModuleGenesis seperation
int
* test
* remove init panic logic in validate genesis replaced with TODO
* set maxprocs to match system's GOMAXPROCS
* Update circleci
* Cap maxprocs in CI to 4
* @alexanderbez recent comments addressed
* less blocks in twouble sims
int
* runsim error output flag
* -e on import_export as well
* error out
int
* Try to fix failures
* runsim
* simplify mock tx type, msgs, and handlers
* remove dependencies on auth and bank
* dedup with setupBaseApp
* lots of comments and cleanup
* fixes where we weren't checking results
* use some table driven tests
* remove TestValidatorChange - its not testing anything since baseapp
doesnt track validator changes
* prepare for CheckTx only running the AnteHandler
* fix runTx gas handling and add more tests
* new tests for multi-msgs
Amaury
Jonathan Gimeno
Federico Kunze
Sunny Aggarwal
Vladimir Evgrafov
frog power 4000
Alexander Bezobchuk
Dev Ojha
Ethan Buchman
Christopher Goes
Adrian Brink
Jae Kwon