feat(price-feeder): add mexc provider (#1339)

Adds the mexc provider 🚀 

---

### Author Checklist

_All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues._

I have...

- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [ ] added appropriate labels to the PR
- [ ] targeted the correct branch (see [PR Targeting](https://github.com/umee-network/umee/blob/main/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [ ] 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 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)

price-feeder/CHANGELOG.md

@@ -49,6 +49,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 ### Features
 
 - [1328](https://github.com/umee-network/umee/pull/1328) Add bitget provider.
+- [1339](https://github.com/umee-network/umee/pull/1339) Add mexc provider.
 
 ### Bugs
 

price-feeder/README.md

@@ -19,7 +19,7 @@ The `price-feeder` tool is responsible for performing the following:
    Binance and Osmosis, based on operator configuration. These exchange rates
    are exposed via an API and are used to feed into the main oracle process.
 2. Taking aggregated exchange rate price data and submitting those exchange rates
-   on-chain to Umee's `x/oracle` module following Umee's [Oracle](https://github.com/umee-network/umee/tree/main/x/oracle/spec)
+   on-chain to Umee's `x/oracle` module following Umee's [Oracle](https://github.com/umee-network/umee/tree/main/x/oracle#readme)
    specification.
 
 <!-- markdown-link-check-disable -->
@@ -33,6 +33,7 @@ The list of current supported providers:
 - [Gate](https://www.gate.io/)
 - [Huobi](https://www.huobi.com/en-us/)
 - [Kraken](https://www.kraken.com/en-us/)
+- [Mexc](https://www.mexc.com/)
 - [Okx](https://www.okx.com/)
 - [Osmosis](https://app.osmosis.zone/)
 <!-- markdown-link-check-enable -->

price-feeder/config/config.go

@@ -40,6 +40,7 @@ var (
 		provider.ProviderCoinbase: {},
 		provider.ProviderFTX:      {},
 		provider.ProviderBitget:   {},
+		provider.ProviderMexc:     {},
 		provider.ProviderMock:     {},
 	}
 

price-feeder/go.mod

@@ -3,6 +3,7 @@ module github.com/umee-network/umee/price-feeder
 go 1.19
 
 require (
+	github.com/armon/go-metrics v0.4.0
 	github.com/cosmos/cosmos-sdk v0.46.1
 	github.com/go-playground/validator/v10 v10.11.0
 	github.com/golangci/golangci-lint v1.49.0
@@ -45,7 +46,6 @@ require (
 	github.com/Workiva/go-datastructures v1.0.53 // indirect
 	github.com/alexkohler/prealloc v1.0.0 // indirect
 	github.com/alingse/asasalint v0.0.11 // indirect
-	github.com/armon/go-metrics v0.4.0 // indirect
 	github.com/ashanbrown/forbidigo v1.3.0 // indirect
 	github.com/ashanbrown/makezero v1.1.1 // indirect
 	github.com/aws/aws-sdk-go v1.40.45 // indirect

price-feeder/oracle/oracle.go

@@ -472,6 +472,9 @@ func NewProvider(
 	case provider.ProviderBitget:
 		return provider.NewBitgetProvider(ctx, logger, endpoint, providerPairs...)
 
+	case provider.ProviderMexc:
+		return provider.NewMexcProvider(ctx, logger, endpoint, providerPairs...)
+
 	case provider.ProviderMock:
 		return provider.NewMockProvider(), nil
 	}