Upgrade Go version from 1.24 to 1.26 (prebid#4737)

Co-authored-by: Ankit Karwa <ankitkarwa@microsoft.com>
Co-authored-by: Anish B <anishb@microsoft.com>

Author: 3 people

.devcontainer/devcontainer.json

@@ -6,7 +6,7 @@
 		"dockerfile": "Dockerfile",
 		"args": {
 			// Update the VARIANT arg to pick a version of Go
-			"VARIANT": "1.24",
+			"VARIANT": "1.26",
 			// Options
 			"INSTALL_NODE": "false",
 			"NODE_VERSION": "lts/*"

.github/workflows/adapter-code-coverage.yml

@@ -44,6 +44,8 @@ jobs:
       - name: Run Coverage Tests
         id: run_coverage
         if: steps.get_directories.outputs.result != ''
+        env:
+          GOTOOLCHAIN: local
         run: |
           directories=$(echo '${{ steps.get_directories.outputs.result }}' | jq -r '.[]')
           go mod download

.github/workflows/validate-merge.yml

@@ -12,7 +12,7 @@ jobs:
     - name: Install Go
       uses: actions/setup-go@v5
       with:
-        go-version: 1.24.0
+        go-version: 1.26.2
 
     - name: Checkout Merged Branch
       uses: actions/checkout@v4

.github/workflows/validate.yml

@@ -10,7 +10,7 @@ jobs:
   validate:
     strategy:
       matrix:
-        go-version: [1.23.x, 1.24.x]
+        go-version: [1.25.x, 1.26.x]
         os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
 
@@ -31,3 +31,4 @@ jobs:
         ./validate.sh --nofmt --cov --race 10
       env:
         GO111MODULE: "on"
+        GOTOOLCHAIN: local

Dockerfile

@@ -6,8 +6,8 @@ RUN apt-get update && \
     apt-get -y upgrade && \
     apt-get install -y --no-install-recommends wget ca-certificates
 WORKDIR /tmp
-RUN wget https://dl.google.com/go/go1.24.0.linux-amd64.tar.gz && \
-    tar -xf go1.24.0.linux-amd64.tar.gz && \
+RUN wget https://dl.google.com/go/go1.26.2.linux-amd64.tar.gz && \
+    tar -xf go1.26.2.linux-amd64.tar.gz && \
     mv go /usr/local
 RUN mkdir -p /app/prebid-server/
 WORKDIR /app/prebid-server/

README.md

@@ -44,7 +44,7 @@ Ensure that you deploy the `/static` directory, as Prebid Server requires those
 
 ## Developing
 
-Prebid Server requires [Go](https://go.dev) version 1.23 or newer. You can develop on any operating system that Go supports; however, please note that our helper scripts are written in bash.
+Prebid Server requires [Go](https://go.dev) version 1.26.2 or newer. You can develop on any operating system that Go supports; however, please note that our helper scripts are written in bash.
 
 1. Clone The Repository
 ``` bash

adapters/adapterstest/adapter_test_util.go

@@ -45,21 +45,21 @@ func SampleBid(width *int64, height *int64, impId string, index int) openrtb2.Bi
 // VerifyStringValue Helper function to assert string equals.
 func VerifyStringValue(value string, expected string, t *testing.T) {
 	if value != expected {
-		t.Fatalf(fmt.Sprintf("%s expected, got %s", expected, value))
+		t.Fatalf("%s expected, got %s", expected, value)
 	}
 }
 
 // VerifyIntValue Helper function to assert Int equals.
 func VerifyIntValue(value int, expected int, t *testing.T) {
 	if value != expected {
-		t.Fatalf(fmt.Sprintf("%d expected, got %d", expected, value))
+		t.Fatalf("%d expected, got %d", expected, value)
 	}
 }
 
 // VerifyBoolValue Helper function to assert bool equals.
 func VerifyBoolValue(value bool, expected bool, t *testing.T) {
 	if value != expected {
-		t.Fatalf(fmt.Sprintf("%v expected, got %v", expected, value))
+		t.Fatalf("%v expected, got %v", expected, value)
 	}
 }
 

endpoints/openrtb2/amp_auction_test.go

@@ -2491,7 +2491,7 @@ func TestAmpAuctionDebugWarningsOnly(t *testing.T) {
 	)
 
 	for _, test := range testCases {
-		httpReq := httptest.NewRequest("GET", fmt.Sprintf("/openrtb2/auction/amp"+test.requestURLArguments), nil)
+		httpReq := httptest.NewRequest("GET", "/openrtb2/auction/amp"+test.requestURLArguments, nil)
 		test.addRequestHeaders(httpReq)
 		recorder := httptest.NewRecorder()
 

exchange/bidder.go

@@ -616,7 +616,7 @@ func (bidder *BidderAdapter) doRequestImpl(ctx context.Context, req *adapters.Re
 	httpResp, err := ctxhttp.Do(ctx, bidder.Client, httpReq)
 	if err != nil {
 		bidder.logHealthCheck(false)
-		if err == context.DeadlineExceeded {
+		if errors.Is(err, context.DeadlineExceeded) {
 			err = &errortypes.Timeout{Message: err.Error()}
 			var corebidder adapters.Bidder = bidder.Bidder
 			// The bidder adapter normally stores an info-aware bidder (a bidder wrapper)
@@ -631,7 +631,6 @@ func (bidder *BidderAdapter) doRequestImpl(ctx context.Context, req *adapters.Re
 				// a loop of trying to report timeouts to the timeout notifications.
 				go bidder.doTimeoutNotification(tb, req, logger)
 			}
-
 		}
 		return &httpCallInfo{
 			request: req,

go.mod

@@ -1,6 +1,6 @@
 module github.com/prebid/prebid-server/v4
 
-go 1.23.0
+go 1.25
 
 require (
 	github.com/51Degrees/device-detection-go/v4 v4.4.35