Add Go 1.20 support

Swaps lint tooling from golint to golangci-lint.
Resolve lint warnings for deprecated package io/ioutil.
Add go.[mod/sum] to gitignore.

Signed-off-by: Austin Vazquez <macedonv@amazon.com>

Author: austinvazquez

.github/workflows/build-pr.yml

@@ -8,13 +8,18 @@ on:
 jobs:
   run:
     runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        go: ['1.18.x', '1.19.x', '1.20.x']
+
     steps:
       - name: checkout source code
         uses: actions/checkout@master
       - name: setup go environment
-        uses: actions/setup-go@v1
+        uses: actions/setup-go@v3
         with:
-          go-version: '1.17.2'
+          go-version: ${{ matrix.go }}
       - name: run tests
         run: |
           export PATH="$(go env GOPATH)/bin:${PATH}"
@@ -26,7 +31,7 @@ jobs:
 
           go get -d ./schema/...
           make .govet
-          make .golint
+          make .lint
 
           make .gitvalidation
           make docs

.github/workflows/build.yml

@@ -8,13 +8,18 @@ on:
 jobs:
   run:
     runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        go: ['1.18.x', '1.19.x', '1.20.x']
+
     steps:
       - name: checkout source code
         uses: actions/checkout@master
       - name: setup go environment
-        uses: actions/setup-go@v1
+        uses: actions/setup-go@v3
         with:
-          go-version: '1.17.2'
+          go-version: ${{ matrix.go }}
       - name: run tests
         run: |
           export PATH="$(go env GOPATH)/bin:${PATH}"
@@ -26,7 +31,7 @@ jobs:
 
           go get -d ./schema/...
           make .govet
-          make .golint
+          make .lint
 
           make .gitvalidation
           make docs

.gitignore

@@ -1,3 +1,5 @@
+go.mod
+go.sum
 output
 schema/validate
 version.md

Makefile

@@ -61,12 +61,9 @@ test: .govet .golint .gitvalidation
 .govet:
 	go vet -x ./...
 
-# `go get github.com/golang/lint/golint`
-.golint:
-ifeq ($(call ALLOWED_GO_VERSION,1.7,$(HOST_GOLANG_VERSION)),true)
-	@which golint > /dev/null 2>/dev/null || (echo "ERROR: golint not found. Consider 'make install.tools' target" && false)
-	golint ./...
-endif
+.lint:
+	@which golangci-lint > /dev/null 2>/dev/null || (echo "ERROR: golangci-lint not found. Consider 'make install.tools' target" && false)
+	golangci-lint run
 
 
 # When this is running in GitHub, it will only check the GitHub commit range
@@ -78,16 +75,13 @@ else
 	git-validation -v -run DCO,short-subject,dangling-whitespace -range $(EPOCH_TEST_COMMIT)..HEAD
 endif
 
-install.tools: .install.golint .install.gitvalidation
+install.tools: .install.lint .install.gitvalidation
 
-# golint does not even build for <go1.7
-.install.golint:
-ifeq ($(call ALLOWED_GO_VERSION,1.7,$(HOST_GOLANG_VERSION)),true)
-	go get -u golang.org/x/lint/golint
-endif
+.install.lint:
+	go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.51.0
 
 .install.gitvalidation:
-	go get -u github.com/vbatts/git-validation
+	go install github.com/vbatts/git-validation@v1.1.0
 
 clean:
 	rm -rf $(OUTPUT_DIRNAME) *~

schema/validate.go

@@ -2,7 +2,7 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"os"
 	"path/filepath"
 	"strings"
@@ -61,7 +61,7 @@ func main() {
 		}
 		documentLoader = gojsonschema.NewReferenceLoader("file://" + documentPath)
 	} else {
-		documentBytes, err := ioutil.ReadAll(os.Stdin)
+		documentBytes, err := io.ReadAll(os.Stdin)
 		if err != nil {
 			fmt.Println(err)
 			os.Exit(1)