Upstream rebase (postgresml#63)

* Change sharding config to enum and move validation of configs into public functions (postgresml#178)

Moves config validation to own functions to enable tools to use them
Moves sharding config to enum
Makes defaults public
Make connect_timeout on pool and option which is overwritten by general connect_timeout

* Replace a few types with more developer-friendly names (postgresml#182)

* Replace a few types with more developer-friendly names

* UserPool -> PoolIdentifier

* Fix maxwait metric (postgresml#183)

Max wait was being reported as 0 after postgresml#159

This PR fixes that and adds test

* A bit faster get_pool (postgresml#187)

* A bit faster get_pool

* fmt

* Use Jemalloc (postgresml#189)

Jemalloc performs better than the standard allocator in various metrics (http://ithare.com/testing-memory-allocators-ptmalloc2-tcmalloc-hoard-jemalloc-while-trying-to-simulate-real-world-loads/).

This PR makes changes to use Jemalloc as the global allocator for Pgcat. Windows is not officially supported by Pgcat but it should still compile but without Jemalloc as the allocator.

* Don't send discard all when state is changed in transaction (postgresml#186)

* Don't send discard all when state is changed in transaction

* Remove unnecessary clone

* spelling

* Move transaction check to SET command

* Add test for set command in transaction

* type

* Update comments

* Update comments

* use moves instead of clones for initial message

* don't make message mutable

* Update unwrap

* but i'm not a wrapper

* Add set local test

* change continue

* Re-enable query parser and parse multiple statements (postgresml#191)

* Re-enable query parser and parse multiple statements

* no diff

* Fix docker-compose (postgresml#193)

Fix docker-compose local build

* Automatic sharding: part one of many (postgresml#194)

Starting automatic sharding

* Dont change shard unless you know (postgresml#195)

* Add dependabot for keeping dependencies up-to-date (postgresml#196)

It will help us to keep the dependencies up-to-date

Signed-off-by: Pradeep Chhetri <pradeepchhetri4444@gmail.com>

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* chore(deps): bump regex from 1.5.5 to 1.6.0 (postgresml#197)

Bumps [regex](https://github.com/rust-lang/regex) from 1.5.5 to 1.6.0.
- [Release notes](https://github.com/rust-lang/regex/releases)
- [Changelog](https://github.com/rust-lang/regex/blob/master/CHANGELOG.md)
- [Commits](rust-lang/regex@1.5.5...1.6.0)

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* chore(deps): bump serde_derive from 1.0.136 to 1.0.147 (postgresml#198)

Bumps [serde_derive](https://github.com/serde-rs/serde) from 1.0.136 to 1.0.147.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](serde-rs/serde@v1.0.136...v1.0.147)

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* chore(deps): bump sha2 from 0.10.2 to 0.10.5 (postgresml#199)

Bumps [sha2](https://github.com/RustCrypto/hashes) from 0.10.2 to 0.10.5.
- [Release notes](https://github.com/RustCrypto/hashes/releases)
- [Commits](RustCrypto/hashes@sha2-v0.10.2...sha2-v0.10.5)

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* chore(deps): bump async-trait from 0.1.52 to 0.1.58 (postgresml#200)

Bumps [async-trait](https://github.com/dtolnay/async-trait) from 0.1.52 to 0.1.58.
- [Release notes](https://github.com/dtolnay/async-trait/releases)
- [Commits](dtolnay/async-trait@0.1.52...0.1.58)

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* chore(deps): bump bytes from 1.1.0 to 1.2.1 (postgresml#206)

Bumps [bytes](https://github.com/tokio-rs/bytes) from 1.1.0 to 1.2.1.
- [Release notes](https://github.com/tokio-rs/bytes/releases)
- [Changelog](https://github.com/tokio-rs/bytes/blob/master/CHANGELOG.md)
- [Commits](tokio-rs/bytes@v1.1.0...v1.2.1)

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* chore(deps): bump rustls-pemfile from 1.0.0 to 1.0.1 (postgresml#205)

Bumps [rustls-pemfile](https://github.com/rustls/pemfile) from 1.0.0 to 1.0.1.
- [Release notes](https://github.com/rustls/pemfile/releases)
- [Commits](https://github.com/rustls/pemfile/commits)

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* chore(deps): bump base64 from 0.13.0 to 0.13.1 (postgresml#203)

Bumps [base64](https://github.com/marshallpierce/rust-base64) from 0.13.0 to 0.13.1.
- [Release notes](https://github.com/marshallpierce/rust-base64/releases)
- [Changelog](https://github.com/marshallpierce/rust-base64/blob/master/RELEASE-NOTES.md)
- [Commits](marshallpierce/rust-base64@v0.13.0...v0.13.1)

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* chore(deps): bump arc-swap from 1.5.0 to 1.5.1 (postgresml#202)

Bumps [arc-swap](https://github.com/vorner/arc-swap) from 1.5.0 to 1.5.1.
- [Release notes](https://github.com/vorner/arc-swap/releases)
- [Changelog](https://github.com/vorner/arc-swap/blob/master/CHANGELOG.md)
- [Commits](vorner/arc-swap@v1.5.0...v1.5.1)

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  dependency-type: direct:production
  update-type: version-update:semver-patch
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* chore(deps): bump rand from 0.8.4 to 0.8.5 (postgresml#201)

Bumps [rand](https://github.com/rust-random/rand) from 0.8.4 to 0.8.5.
- [Release notes](https://github.com/rust-random/rand/releases)
- [Changelog](https://github.com/rust-random/rand/blob/master/CHANGELOG.md)
- [Commits](rust-random/rand@0.8.4...0.8.5)

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* chore(deps): bump tokio from 1.16.1 to 1.19.2 (postgresml#210)

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.16.1 to 1.19.2.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-1.16.1...tokio-1.19.2)

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  update-type: version-update:semver-minor
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* chore(deps): bump once_cell from 1.9.0 to 1.16.0 (postgresml#209)

Bumps [once_cell](https://github.com/matklad/once_cell) from 1.9.0 to 1.16.0.
- [Release notes](https://github.com/matklad/once_cell/releases)
- [Changelog](https://github.com/matklad/once_cell/blob/master/CHANGELOG.md)
- [Commits](matklad/once_cell@v1.9.0...v1.16.0)

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* chore(deps): bump log from 0.4.14 to 0.4.17 (postgresml#216)

Bumps [log](https://github.com/rust-lang/log) from 0.4.14 to 0.4.17.
- [Release notes](https://github.com/rust-lang/log/releases)
- [Changelog](https://github.com/rust-lang/log/blob/master/CHANGELOG.md)
- [Commits](rust-lang/log@0.4.14...0.4.17)

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  dependency-type: direct:production
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* chore(deps): bump serde from 1.0.136 to 1.0.147 (postgresml#215)

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.136 to 1.0.147.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](serde-rs/serde@v1.0.136...v1.0.147)

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* chore(deps): bump md-5 from 0.10.0 to 0.10.4 (postgresml#214)

Bumps [md-5](https://github.com/RustCrypto/hashes) from 0.10.0 to 0.10.4.
- [Release notes](https://github.com/RustCrypto/hashes/releases)
- [Commits](RustCrypto/hashes@md2-v0.10.0...md-5-v0.10.4)

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  dependency-type: direct:production
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* chore(deps): bump sha2 from 0.10.5 to 0.10.6 (postgresml#213)

Bumps [sha2](https://github.com/RustCrypto/hashes) from 0.10.5 to 0.10.6.
- [Release notes](https://github.com/RustCrypto/hashes/releases)
- [Commits](RustCrypto/hashes@sha2-v0.10.5...sha2-v0.10.6)

---
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- dependency-name: sha2
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* chore(deps): bump env_logger from 0.9.0 to 0.9.1 (postgresml#212)

Bumps [env_logger](https://github.com/env-logger-rs/env_logger) from 0.9.0 to 0.9.1.
- [Release notes](https://github.com/env-logger-rs/env_logger/releases)
- [Changelog](https://github.com/env-logger-rs/env_logger/blob/main/CHANGELOG.md)
- [Commits](rust-cli/env_logger@v0.9.0...v0.9.1)

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  dependency-type: direct:production
  update-type: version-update:semver-patch
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* chore(deps): bump chrono from 0.4.19 to 0.4.22 (postgresml#211)

Bumps [chrono](https://github.com/chronotope/chrono) from 0.4.19 to 0.4.22.
- [Release notes](https://github.com/chronotope/chrono/releases)
- [Changelog](https://github.com/chronotope/chrono/blob/v0.4.22/CHANGELOG.md)
- [Commits](chronotope/chrono@v0.4.19...v0.4.22)

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* chore(deps): bump toml from 0.5.8 to 0.5.9 (postgresml#207)

Bumps [toml](https://github.com/alexcrichton/toml-rs) from 0.5.8 to 0.5.9.
- [Release notes](https://github.com/alexcrichton/toml-rs/releases)
- [Commits](toml-rs/toml-rs@0.5.8...0.5.9)

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* Fix for warnings about avg_errors not implemented (postgresml#220)

* Fix dependabot labels for pull-requests (postgresml#219)

* chore(deps): bump jemallocator from 0.3.2 to 0.5.0 (postgresml#218)

Bumps [jemallocator](https://github.com/tikv/jemallocator) from 0.3.2 to 0.5.0.
- [Release notes](https://github.com/tikv/jemallocator/releases)
- [Changelog](https://github.com/tikv/jemallocator/blob/main/CHANGELOG.md)
- [Commits](https://github.com/tikv/jemallocator/commits/0.5.0)

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- dependency-name: jemallocator
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* chore(deps): bump md-5 from 0.10.4 to 0.10.5 (postgresml#217)

Bumps [md-5](https://github.com/RustCrypto/hashes) from 0.10.4 to 0.10.5.
- [Release notes](https://github.com/RustCrypto/hashes/releases)
- [Commits](RustCrypto/hashes@md-5-v0.10.4...md-5-v0.10.5)

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* Fix generator

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.github/dependabot.yml

@@ -0,0 +1,12 @@
+version: 2
+updates:
+  - package-ecosystem: "cargo"
+    directory: "/"
+    schedule:
+      interval: "daily"
+      time: "04:00" # UTC
+    labels:
+      - "dependencies"
+    commit-message:
+      prefix: "chore(deps)"
+    open-pull-requests-limit: 10