Upgrade Go version 1.23 to 1.25

.github/workflows/build-and-test.yaml

@@ -13,7 +13,7 @@ on:
     - cron: '0 19 * * 1-5'
 
 env:
-  DEFAULT_GO_VERSION: ^1.22.0
+  DEFAULT_GO_VERSION: ^1.25.0
   GITHUB_USERNAME: ${{ secrets.EC2_BOT_GITHUB_USERNAME }}
   GITHUB_TOKEN: ${{ secrets.EC2_BOT_GITHUB_TOKEN }}
   WEBHOOK_URL: ${{ secrets.WEBHOOK_URL }}
@@ -71,7 +71,7 @@ jobs:
           cache: false
 
       - name: Set up golangci-lint
-        uses: golangci/golangci-lint-action@v3
+        uses: golangci/golangci-lint-action@v7
         with:
           version: latest
           args: --timeout=5m

.github/workflows/release.yaml

@@ -10,7 +10,7 @@ permissions:
   id-token: write
 
 env:
-  DEFAULT_GO_VERSION: ^1.22.0
+  DEFAULT_GO_VERSION: ^1.25.0
   GITHUB_USERNAME: ${{ secrets.EC2_BOT_GITHUB_USERNAME }}
   GITHUB_TOKEN: ${{ secrets.EC2_BOT_GITHUB_TOKEN }}
   WEBHOOK_URL: ${{ secrets.WEBHOOK_URL }}

Dockerfile

@@ -1,4 +1,4 @@
-FROM --platform=$BUILDPLATFORM golang:1.22 as builder
+FROM --platform=$BUILDPLATFORM golang:1.25 as builder
 
 ## GOLANG env
 ARG GOPROXY="https://proxy.golang.org|direct"

Dockerfile.windows

@@ -1,7 +1,7 @@
 ARG WINDOWS_VERSION=1809
 
 # Build the manager binary
-FROM --platform=windows/amd64 golang:1.22 as builder
+FROM --platform=windows/amd64 golang:1.25 as builder
 
 ## GOLANG env
 ENV GO111MODULE="on" CGO_ENABLED="0" GOOS="windows" GOARCH="amd64"

README.md

@@ -6,7 +6,7 @@
   <a href="https://github.com/kubernetes/kubernetes/releases">
     <img src="https://img.shields.io/badge/Kubernetes-%3E%3D%201.23-brightgreen" alt="kubernetes">
   </a>
-  <a href="https://golang.org/doc/go1.22">
+  <a href="https://golang.org/doc/go1.25">
     <img src="https://img.shields.io/github/go-mod/go-version/aws/aws-node-termination-handler?color=blueviolet" alt="go-version">
   </a>
   <a href="https://opensource.org/licenses/Apache-2.0">

cmd/node-termination-handler.go

@@ -279,11 +279,12 @@ func main() {
 	asgLaunchHandler := launch.New(interruptionEventStore, *node, nthConfig, metrics, recorder, clientset)
 	drainCordonHander := draincordon.New(interruptionEventStore, *node, nthConfig, nodeMetadata, metrics, recorder)
 
+InterruptionLoop:
 	for range time.NewTicker(1 * time.Second).C {
 		select {
 		case <-signalChan:
 			// Exit interruption loop if a SIGTERM is received or the channel is closed
-			break
+			break InterruptionLoop
 		default:
 		EventLoop:
 			for event, ok := interruptionEventStore.GetActiveEvent(); ok; event, ok = interruptionEventStore.GetActiveEvent() {
@@ -320,7 +321,7 @@ func handleRebootUncordon(nodeName string, interruptionEventStore *interruptione
 	}
 	err = node.UncordonIfRebooted(nodeName)
 	if err != nil {
-		return fmt.Errorf("Unable to complete node label actions: %w", err)
+		return fmt.Errorf("unable to complete node label actions: %w", err)
 	}
 	interruptionEventStore.IgnoreEvent(eventID)
 	return nil

go.mod

@@ -1,8 +1,8 @@
 module github.com/aws/aws-node-termination-handler
 
-go 1.22.0
+go 1.25
 
-toolchain go1.22.2
+toolchain go1.25.5
 
 require (
 	github.com/Masterminds/sprig/v3 v3.2.3

pkg/config/config.go

@@ -316,8 +316,12 @@ func ParseCliArgs() (config Config, err error) {
 	}
 
 	// client-go expects these to be set in env vars
-	os.Setenv(kubernetesServiceHostConfigKey, config.KubernetesServiceHost)
-	os.Setenv(kubernetesServicePortConfigKey, config.KubernetesServicePort)
+	if err := os.Setenv(kubernetesServiceHostConfigKey, config.KubernetesServiceHost); err != nil {
+		return config, fmt.Errorf("failed to set %s environment variable: %w", kubernetesServiceHostConfigKey, err)
+	}
+	if err := os.Setenv(kubernetesServicePortConfigKey, config.KubernetesServicePort); err != nil {
+		return config, fmt.Errorf("failed to set %s environment variable: %w", kubernetesServicePortConfigKey, err)
+	}
 
 	return config, err
 }

pkg/ec2metadata/ec2metadata.go

@@ -139,16 +139,16 @@ func New(metadataURL string, tries int) *Service {
 func (e *Service) GetScheduledMaintenanceEvents() ([]ScheduledEventDetail, error) {
 	resp, err := e.Request(ScheduledEventPath)
 	if resp != nil && (resp.StatusCode < 200 || resp.StatusCode >= 300) {
-		return nil, fmt.Errorf("Metadata request received http status code: %d", resp.StatusCode)
+		return nil, fmt.Errorf("metadata request received http status code: %d", resp.StatusCode)
 	}
 	if err != nil {
-		return nil, fmt.Errorf("Unable to parse metadata response: %w", err)
+		return nil, fmt.Errorf("unable to parse metadata response: %w", err)
 	}
-	defer resp.Body.Close()
+	defer func() { _ = resp.Body.Close() }()
 	var scheduledEvents []ScheduledEventDetail
 	err = json.NewDecoder(resp.Body).Decode(&scheduledEvents)
 	if err != nil {
-		return nil, fmt.Errorf("Could not decode json retrieved from imds: %w", err)
+		return nil, fmt.Errorf("could not decode json retrieved from imds: %w", err)
 	}
 	return scheduledEvents, nil
 }
@@ -160,16 +160,16 @@ func (e *Service) GetSpotITNEvent() (instanceAction *InstanceAction, err error)
 	if resp != nil && resp.StatusCode == 404 {
 		return nil, nil
 	} else if resp != nil && (resp.StatusCode < 200 || resp.StatusCode >= 300) {
-		return nil, fmt.Errorf("Metadata request received http status code: %d", resp.StatusCode)
+		return nil, fmt.Errorf("metadata request received http status code: %d", resp.StatusCode)
 	}
 	if err != nil {
-		return nil, fmt.Errorf("Unable to parse metadata response: %w", err)
+		return nil, fmt.Errorf("unable to parse metadata response: %w", err)
 	}
-	defer resp.Body.Close()
+	defer func() { _ = resp.Body.Close() }()
 
 	err = json.NewDecoder(resp.Body).Decode(&instanceAction)
 	if err != nil {
-		return nil, fmt.Errorf("Could not decode instance action response: %w", err)
+		return nil, fmt.Errorf("could not decode instance action response: %w", err)
 	}
 	return instanceAction, nil
 }
@@ -181,16 +181,16 @@ func (e *Service) GetRebalanceRecommendationEvent() (rebalanceRec *RebalanceReco
 	if resp != nil && resp.StatusCode == 404 {
 		return nil, nil
 	} else if resp != nil && (resp.StatusCode < 200 || resp.StatusCode >= 300) {
-		return nil, fmt.Errorf("Metadata request received http status code: %d", resp.StatusCode)
+		return nil, fmt.Errorf("metadata request received http status code: %d", resp.StatusCode)
 	}
 	if err != nil {
-		return nil, fmt.Errorf("Unable to parse metadata response: %w", err)
+		return nil, fmt.Errorf("unable to parse metadata response: %w", err)
 	}
-	defer resp.Body.Close()
+	defer func() { _ = resp.Body.Close() }()
 
 	err = json.NewDecoder(resp.Body).Decode(&rebalanceRec)
 	if err != nil {
-		return nil, fmt.Errorf("Could not decode rebalance recommendation response: %w", err)
+		return nil, fmt.Errorf("could not decode rebalance recommendation response: %w", err)
 	}
 	return rebalanceRec, nil
 }
@@ -203,16 +203,16 @@ func (e *Service) GetASGTargetLifecycleState() (state string, err error) {
 	if resp != nil && resp.StatusCode == 404 {
 		return "", nil
 	} else if resp != nil && (resp.StatusCode < 200 || resp.StatusCode >= 300) {
-		return "", fmt.Errorf("Metadata request received http status code: %d", resp.StatusCode)
+		return "", fmt.Errorf("metadata request received http status code: %d", resp.StatusCode)
 	}
 	if err != nil {
-		return "", fmt.Errorf("Unable to parse metadata response: %w", err)
+		return "", fmt.Errorf("unable to parse metadata response: %w", err)
 	}
-	defer resp.Body.Close()
+	defer func() { _ = resp.Body.Close() }()
 
 	body, err := io.ReadAll(resp.Body)
 	if err != nil {
-		return "", fmt.Errorf("Unable to parse http response. Status code: %d. %w", resp.StatusCode, err)
+		return "", fmt.Errorf("unable to parse http response. Status code: %d. %w", resp.StatusCode, err)
 	}
 	return string(body), nil
 }
@@ -222,19 +222,19 @@ func (e *Service) GetMetadataInfo(path string, allowMissing bool) (info string,
 	metadataInfo := ""
 	resp, err := e.Request(path)
 	if err != nil {
-		return "", fmt.Errorf("Unable to parse metadata response: %w", err)
+		return "", fmt.Errorf("unable to parse metadata response: %w", err)
 	}
 	if resp != nil {
-		defer resp.Body.Close()
+		defer func() { _ = resp.Body.Close() }()
 		body, err := io.ReadAll(resp.Body)
 		if err != nil {
-			return "", fmt.Errorf("Unable to parse http response. Status code: %d. %w", resp.StatusCode, err)
+			return "", fmt.Errorf("unable to parse http response. Status code: %d. %w", resp.StatusCode, err)
 		}
 		metadataInfo = string(body)
 		if resp.StatusCode < 200 || resp.StatusCode >= 300 {
 			if resp.StatusCode != 404 || !allowMissing {
 				log.Info().Msgf("Metadata response status code: %d. Body: %s", resp.StatusCode, metadataInfo)
-				return "", fmt.Errorf("Metadata request received http status code: %d", resp.StatusCode)
+				return "", fmt.Errorf("metadata request received http status code: %d", resp.StatusCode)
 			} else {
 				return "", nil
 			}
@@ -249,7 +249,7 @@ func (e *Service) GetMetadataInfo(path string, allowMissing bool) (info string,
 func (e *Service) Request(contextPath string) (*http.Response, error) {
 	req, err := http.NewRequest(http.MethodGet, e.metadataURL+contextPath, nil)
 	if err != nil {
-		return nil, fmt.Errorf("Unable to construct an http get request to IDMS for %s: %w", e.metadataURL+contextPath, err)
+		return nil, fmt.Errorf("unable to construct an http get request to IDMS for %s: %w", e.metadataURL+contextPath, err)
 	}
 	var resp *http.Response
 	for i := 0; i < tokenRetryAttempts; i++ {
@@ -274,7 +274,7 @@ func (e *Service) Request(contextPath string) (*http.Response, error) {
 		}
 		resp, err = retry(e.tries, 2*time.Second, httpReq)
 		if err != nil {
-			return nil, fmt.Errorf("Unable to get a response from IMDS: %w", err)
+			return nil, fmt.Errorf("unable to get a response from IMDS: %w", err)
 		}
 		if resp != nil && resp.StatusCode == 401 {
 			e.Lock()
@@ -297,7 +297,7 @@ func (e *Service) Request(contextPath string) (*http.Response, error) {
 func (e *Service) getV2Token() (string, int, error) {
 	req, err := http.NewRequest(http.MethodPut, e.metadataURL+tokenRefreshPath, nil)
 	if err != nil {
-		return "", -1, fmt.Errorf("Unable to construct http put request to retrieve imdsv2 token: %w", err)
+		return "", -1, fmt.Errorf("unable to construct http put request to retrieve imdsv2 token: %w", err)
 	}
 	req.Header.Add(tokenTTLHeader, strconv.Itoa(tokenTTL))
 	httpReq := func() (*http.Response, error) {
@@ -308,13 +308,13 @@ func (e *Service) getV2Token() (string, int, error) {
 	if err != nil {
 		return "", -1, err
 	}
-	defer resp.Body.Close()
+	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
-		return "", -1, fmt.Errorf("Received an http status code %d", resp.StatusCode)
+		return "", -1, fmt.Errorf("received an http status code %d", resp.StatusCode)
 	}
 	token, err := io.ReadAll(resp.Body)
 	if err != nil {
-		return "", -1, fmt.Errorf("Unable to read token response from IMDSv2: %w", err)
+		return "", -1, fmt.Errorf("unable to read token response from IMDSv2: %w", err)
 	}
 	ttl, err := ttlHeaderToInt(resp)
 	if err != nil {
@@ -327,7 +327,7 @@ func (e *Service) getV2Token() (string, int, error) {
 func ttlHeaderToInt(resp *http.Response) (int, error) {
 	ttl := resp.Header.Get(tokenTTLHeader)
 	if ttl == "" {
-		return -1, fmt.Errorf("No token TTL header found")
+		return -1, fmt.Errorf("no token TTL header found")
 	}
 	ttlInt, err := strconv.Atoi(ttl)
 	if err != nil {

pkg/ec2metadata/ec2metadata_internal_test.go

@@ -27,8 +27,8 @@ import (
 )
 
 func TestRetry(t *testing.T) {
-	var numRetries int = 3
-	var errorMsg string = "Request failed"
+	var numRetries = 3
+	var errorMsg = "Request failed"
 	var requestCount int
 
 	request := func() (*http.Response, error) {
@@ -42,7 +42,7 @@ func TestRetry(t *testing.T) {
 
 	resp, err := retry(numRetries, time.Microsecond, request)
 	h.Assert(t, err != nil, "Should have gotten a \"Request failed\" error")
-	defer resp.Body.Close()
+	defer func() { _ = resp.Body.Close() }()
 
 	h.Equals(t, errorMsg, err.Error())
 	h.Equals(t, numRetries, requestCount)