go: upgrade to Go 1.26 and modernize

.github/workflows/build.yml

@@ -8,5 +8,5 @@ jobs:
  - uses: actions/checkout@v3
  - uses: actions/setup-go@v2
  with:
- go-version: '1.15.1'
+ go-version: '1.26.4'
  - run: go test -coverprofile coverage.txt

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.15-alpine as builder
+FROM golang:1.26.4-alpine as builder
 
 #ENV CGO_ENABLED=0
 WORKDIR /build

go.mod

@@ -1,3 +1,3 @@
 module github.com/sourcegraph/codenotify
 
-go 1.15
+go 1.26.4

main.go

@@ -142,7 +142,7 @@ func githubActionOptions() (*options, error) {
  return nil, fmt.Errorf("env var GITHUB_EVENT_PATH not set")
 	}
 
-	data, err := ioutil.ReadFile(path)
+	data, err := os.ReadFile(path)
 	if err != nil {
  return nil, fmt.Errorf("unable to read GitHub event json %s: %s", path, err)
 	}
@@ -226,7 +226,7 @@ func updateComment(id, body string) error {
  clientMutationId
  }
  }`,
- map[string]interface{}{
+ map[string]any{
  "id": id,
  "body": body,
  },
@@ -245,7 +245,7 @@ func addComment(subjectId, body string) error {
  clientMutationId
  }
  }`,
- map[string]interface{}{
+ map[string]any{
  "subjectId": subjectId,
  "body": body,
  },
@@ -271,7 +271,7 @@ func commitCount(prNodeID string) (int, error) {
  }
  }
  }`,
- map[string]interface{}{
+ map[string]any{
  "nodeId": prNodeID,
  },
  &data,
@@ -310,7 +310,7 @@ func existingCommentId(prNodeID string, filename string) (string, error) {
  }
  }
  }`,
- map[string]interface{}{
+ map[string]any{
  "nodeId": prNodeID,
  },
  &data,
@@ -328,8 +328,8 @@ func existingCommentId(prNodeID string, filename string) (string, error) {
 	return "", nil
 }
 
-func graphql(query string, variables map[string]interface{}, responseData interface{}) error {
-	reqbody, err := json.Marshal(map[string]interface{}{
+func graphql(query string, variables map[string]any, responseData any) error {
+	reqbody, err := json.Marshal(map[string]any{
  "query": query,
  "variables": variables,
 	})
@@ -370,7 +370,7 @@ func graphql(query string, variables map[string]interface{}, responseData interf
 	}
 
 	response := struct {
- Data interface{}
+ Data any
  Errors []struct {
  Type string `json:"type"`
  Path []string `json:"path"`

main_test.go

@@ -4,6 +4,7 @@
 	"bytes"
 	"fmt"
 	"io"
+	"io/fs"
 	"io/ioutil"
 	"os"
 	"os/exec"
@@ -48,7 +49,7 @@
 	for _, test := range tests {
  t.Run(test.name, func(t *testing.T) {
 
- gitroot, err := ioutil.TempDir("", "codenotify")
+ gitroot, err := os.MkdirTemp("", "codenotify")
  if err != nil {
  t.Fatalf("unable to create temporary directory: %s", err)
  }
@@ -64,7 +65,7 @@
  t.Fatalf("unable to make directory %s: %s", dir, err)
  }
 
- if err := ioutil.WriteFile(file, []byte(content), 0666); err != nil {
+ if err := os.WriteFile(file, []byte(content), 0666); err != nil {
  t.Fatalf("unable to write file %s: %s", file, err)
  }
  }