[Go] Bump to 1.21 (#61)

.gitignore

@@ -12,3 +12,5 @@
 
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
+
+.bin

.golangci.yml

@@ -31,12 +31,24 @@ linters:
     - govet
     - typecheck
     - gocritic
+    - gci
 
 run:
 
   # timeout for analysis
   timeout: 5m
 
+linters-settings:
+  gci:
+    sections:
+      - standard
+      - prefix(github.com/v3io/scaler)
+      - default
+      - blank
+      - dot
+
+    custom-order: true
+
 issues:
 
   # List of regexps of issue texts to exclude

Makefile

@@ -73,31 +73,17 @@ GO_BUILD_TOOL_WORKDIR = /scaler
 
 .PHONY: lint
 lint: modules
-	@echo Installing linters...
-	@test -e $(GOPATH)/bin/impi || \
-		curl -s https://api.github.com/repos/pavius/impi/releases/latest \
-			| grep -i "browser_download_url.*impi.*$(OS_NAME)" \
-			| cut -d : -f 2,3 \
-			| tr -d \" \
-			| wget -O $(GOPATH)/bin/impi -qi -
-	@test -e $(GOPATH)/bin/golangci-lint || \
-    	  	(curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(GOPATH)/bin v1.50.1)
-
-	@echo Verifying imports...
-	chmod +x $(GOPATH)/bin/impi && $(GOPATH)/bin/impi \
-		--local github.com/v3io/scaler/ \
-		--scheme stdLocalThirdParty \
-		--skip pkg/platform/kube/apis \
-		--skip pkg/platform/kube/client \
-		./cmd/... ./pkg/...
+	@test -e .bin/golangci-lint || \
+    	  	(curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b .bin v1.55.1)
 
 	@echo Linting...
-	$(GOPATH)/bin/golangci-lint run -v
+	.bin/golangci-lint run -v
 	@echo Done.
 
 .PHONY: fmt
 fmt:
 	gofmt -s -w .
+	.bin/golangci-lint run --fix ./...
 
 .PHONY: test-undockerized
 test-undockerized: modules
@@ -116,13 +102,8 @@ test:
 	$(SCALER_DOCKER_TEST_TAG) \
 	/bin/bash -c "make test-undockerized"
 
-.PHONY: ensure-gopath
-ensure-gopath:
-ifndef GOPATH
-	$(error GOPATH must be set)
-endif
 
 .PHONY: modules
-modules: ensure-gopath
+modules:
 	@echo Getting go modules
 	@go mod download

cmd/autoscaler/Dockerfile

@@ -13,7 +13,7 @@
 # limitations under the License.
 #
 
-FROM gcr.io/iguazio/golang:1.19-alpine3.17 AS builder
+FROM gcr.io/iguazio/golang:1.21-alpine3.18 AS builder
 
 RUN apk --update --no-cache add \
     git \
@@ -30,6 +30,6 @@ COPY . .
 
 RUN GOOS=linux GOARCH=amd64 go build -a -installsuffix cgo -ldflags="-s -w" -o autoscaler cmd/autoscaler/main.go
 
-FROM gcr.io/iguazio/alpine:3.17
+FROM gcr.io/iguazio/alpine:3.18
 
 COPY --from=builder /autoscaler/autoscaler /home/v3io/bin/autoscaler

cmd/dlx/Dockerfile

@@ -13,7 +13,7 @@
 # limitations under the License.
 #
 
-FROM gcr.io/iguazio/golang:1.19-alpine3.17 AS builder
+FROM gcr.io/iguazio/golang:1.21-alpine3.18 AS builder
 
 RUN apk --update --no-cache add \
     git \
@@ -30,6 +30,6 @@ COPY . .
 
 RUN GOOS=linux GOARCH=amd64 go build -a -installsuffix cgo -ldflags="-s -w" -o dlx cmd/dlx/main.go
 
-FROM gcr.io/iguazio/alpine:3.17
+FROM gcr.io/iguazio/alpine:3.18
 
 COPY --from=builder /dlx/dlx /home/v3io/bin/dlx

pkg/resourcescaler/mock/resourcescaler.go

@@ -32,7 +32,7 @@ type ResourceScaler struct {
 	mock.Mock
 }
 
-func New(kubeconfigPath string, namespace string) (scalertypes.ResourceScaler, error) { // nolint: deadcode
+func New(_ string, _ string) (scalertypes.ResourceScaler, error) { // nolint: deadcode
 	return &ResourceScaler{}, nil
 }
 

pkg/resourcescaler/nop/resourcescaler.go

@@ -28,15 +28,15 @@ import (
 
 type ResourceScaler struct{}
 
-func New(kubeconfigPath string, namespace string) (scalertypes.ResourceScaler, error) { // nolint: deadcode
+func New(_ string, _ string) (scalertypes.ResourceScaler, error) { // nolint: deadcode
 	return &ResourceScaler{}, nil
 }
 
-func (r *ResourceScaler) SetScale(resources []scalertypes.Resource, scale int) error {
+func (r *ResourceScaler) SetScale(_ []scalertypes.Resource, _ int) error {
 	return nil
 }
 
-func (r *ResourceScaler) SetScaleCtx(ctx context.Context, resources []scalertypes.Resource, scale int) error {
+func (r *ResourceScaler) SetScaleCtx(_ context.Context, _ []scalertypes.Resource, _ int) error {
 	return nil
 }