Adding upgrade file watcher for cosmovisor.
Currently the comswisor upgrade mechanism relays on parsing log messages. This is not reliable:
+ depends on the log level output (x/upgrade uses INFO)
+ can be hacked by accidentally logging user user content
+ can be broken by using upgrade name which will break the regex pattern.
closes: #7703closes: #8523closes: #8651closes: #8793closes: #8964
**Depends on**:
- #9652
---
Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.
- [ ] Targeted PR against correct branch (see [CONTRIBUTING.md](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [ ] Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
- [ ] Code follows the [module structure standards](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules/structure.md).
- [ ] Wrote unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [ ] Updated relevant documentation (`docs/`) or specification (`x/<module>/spec/`)
- [ ] Added relevant `godoc` [comments](https://blog.golang.org/godoc-documenting-go-code).
- [ ] Added a relevant changelog entry to the `Unreleased` section in `CHANGELOG.md`
- [ ] Re-reviewed `Files changed` in the Github PR explorer
- [ ] Review `Codecov Report` in the comment section below once CI passes
{,cosmosvisor/}Makefile: Add Makefile to cosmovisor/
subdirectory and integrate build target into the
top-directory Makefile.
cosmovisor/:
Create Golang-idiomatic cmd/ subdirectory to make
`cosmosvisor` binary (instead of a binary named `cmd`)
automatically installable with `go get`.
Minor changes to error handling:
- Plain error strings bring more value than the whole
stacktrace in case of dumb configuration errors.
- Output errors to /dev/stderr instead of /dev/stdout.
Remove dependency on github.com/pkg/errors.
Federico Kunze Küllmer
Robert Zaremba
Alessio Treglia
Jonathan Gimeno