Fix stuff and add LivenessProbe to CarbonProvider

pkg/providers/carbon/carbon.go

@@ -17,6 +17,7 @@ package carbon
 import (
 	"context"
 	"fmt"
+	"net/http"
 	"strings"
 	"sync"
 	"time"
@@ -28,7 +29,7 @@ import (
 	"github.com/aws/aws-sdk-go/service/pricing/pricingiface"
 	"github.com/samber/lo"
 
-	"github.com/aws/karpenter-core/pkg/utils/pretty"
+	"sigs.k8s.io/karpenter/pkg/utils/pretty"
 )
 
 // CarbonProvider provides actual pricing data to the AWS cloud provider to allow it to make more informed decisions
@@ -61,7 +62,6 @@ type zonal struct {
 
 type Err struct {
 	error
-	lastUpdateTime time.Time
 }
 
 func newZonalPricing(defaultPrice float64) zonal {
@@ -146,6 +146,14 @@ func (p *CarbonProvider) UpdateSpotPricing(ctx context.Context) error {
 	return nil
 }
 
+func (p *CarbonProvider) LivenessProbe(_ *http.Request) error {
+	// ensure we don't deadlock and nolint for the empty critical section
+	p.mu.Lock()
+	//nolint: staticcheck
+	p.mu.Unlock()
+	return nil
+}
+
 func populateInitialSpotPricing(pricing map[string]float64) map[string]zonal {
 	m := map[string]zonal{}
 	for it, price := range pricing {

pkg/providers/carbon/zz_generated.carbon_aws.go

@@ -1,5 +1,19 @@
 //go:build !ignore_autogenerated
 
+/*
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
 package carbon
 
 import "time"