Pin and install go from go.mod version (#352)

This include a super low tech mechanism not docker multistage either
dockerized golang, it just download a golang tarball and install it under
repo.

Signed-off-by: Quique Llorente <[email protected]>

Makefile

@@ -16,8 +16,6 @@ export KUBEVIRT_PROVIDER ?= k8s-1.15.1
 export KUBEVIRT_NUM_NODES ?= 1
 export KUBEVIRT_NUM_SECONDARY_NICS ?= 2
 
-export GOFLAGS=-mod=vendor
-export GO111MODULE=on
 
 e2e_test_args = -singleNamespace=true -test.v -test.timeout=40m -ginkgo.v -ginkgo.slowSpecThreshold=60 $(E2E_TEST_ARGS)
 ifeq ($(findstring k8s,$(KUBEVIRT_PROVIDER)),k8s)
@@ -26,10 +24,20 @@ else
 	e2e_test_args += -primaryNic ens3 -firstSecondaryNic ens8 -secondSecondaryNic ens9
 endif
 
-BIN_DIR = build/_output/bin/
-GINKGO ?= $(BIN_DIR)/ginkgo
-OPERATOR_SDK ?= $(BIN_DIR)/operator-sdk
-GITHUB_RELEASE ?= $(BIN_DIR)/github-release
+BIN_DIR = $(CURDIR)/build/_output/bin/
+
+export GOFLAGS=-mod=vendor
+export GO111MODULE=on
+export GOROOT=$(BIN_DIR)/go/
+export GOBIN=$(GOROOT)/bin/
+export PATH := $(GOROOT)/bin:$(PATH)
+
+GINKGO ?= $(GOBIN)/ginkgo
+OPERATOR_SDK ?= $(GOBIN)/operator-sdk
+GITHUB_RELEASE ?= $(GOBIN)/github-release
+GOFMT := $(GOBIN)/gofmt
+GO := $(GOBIN)/go
+
 LOCAL_REGISTRY ?= registry:5000
 
 CLUSTER_DIR ?= kubevirtci/cluster-up/
@@ -50,26 +58,29 @@ all: check handler
 
 check: format vet whitespace-check
 
-format: whitespace-format
-	gofmt -d cmd/ pkg/
+format: whitespace-format $(GO)
+	$(GOFMT) -d cmd/ pkg/
 
-vet:
-	go vet ./cmd/... ./pkg/...
+vet: $(GO)
+	$(GO) vet ./cmd/... ./pkg/...
 
 whitespace-format:
 	hack/whitespace.sh format
 
 whitespace-check:
 	hack/whitespace.sh check
 
-$(GINKGO): go.mod
-	GOBIN=$$(pwd)/$(BIN_DIR) go install ./vendor/github.com/onsi/ginkgo/ginkgo
+$(GO):
+	hack/install-go.sh $(BIN_DIR)
+
+$(GINKGO): go.mod $(GO)
+	$(GO) install ./vendor/github.com/onsi/ginkgo/ginkgo
 
-$(OPERATOR_SDK): go.mod
-	GOBIN=$$(pwd)/$(BIN_DIR) go install ./vendor/github.com/operator-framework/operator-sdk/cmd/operator-sdk
+$(OPERATOR_SDK): go.mod $(GO)
+	$(GO) install ./vendor/github.com/operator-framework/operator-sdk/cmd/operator-sdk
 
-$(GITHUB_RELEASE): go.mod
-	GOBIN=$$(pwd)/$(BIN_DIR) go install ./vendor/github.com/aktau/github-release
+$(GITHUB_RELEASE): go.mod $(GO)
+	$(GO) install ./vendor/github.com/aktau/github-release
 
 
 gen-k8s: $(OPERATOR_SDK)
@@ -171,7 +182,7 @@ release: $(versioned_operator_manifest) push-handler $(description) $(GITHUB_REL
 						$(shell find deploy/crds/ deploy/openshift -type f)
 
 tools-vendoring:
-	./hack/vendor-tools.sh $$(pwd)/$(BIN_DIR) $$(pwd)/tools.go
+	./hack/vendor-tools.sh $(BIN_DIR) $$(pwd)/tools.go
 
 .PHONY: \
 	all \

automation/check-patch.setup.sh

@@ -6,22 +6,11 @@
 tmp_dir=/tmp/knmstate/
 
 rm -rf $tmp_dir
-
-echo 'Setup Go paths'
-export GOROOT=$tmp_dir/go/root
-mkdir -p $GOROOT
-export PATH=${GOROOT}/bin:${PATH}
-
-export GIMME_GO_VERSION=$(grep "^go " go.mod |awk '{print $2}')
-echo "Install Go $GIMME_GO_VERSION"
-gimme_dir=$tmp_dir/go/gimme
-mkdir -p $gimme_dir
-curl -sL https://raw.githubusercontent.com/travis-ci/gimme/master/gimme | HOME=${gimme_dir} bash >> ${gimme_dir}/gimme.sh
-source $gimme_dir/gimme.sh
-
+mkdir -p $tmp_dir
 
 export TMP_PROJECT_PATH=$tmp_dir/kubernetes-nmstate
 export ARTIFACTS=${ARTIFACTS-$tmp_dir/artifacts}
 mkdir -p $ARTIFACTS
+
 rsync -rt --links --filter=':- .gitignore' $(pwd)/ $TMP_PROJECT_PATH
 

go.mod

@@ -1,6 +1,6 @@
 module github.com/nmstate/kubernetes-nmstate
 
-go 1.12
+go 1.12.15
 
 require (
 	github.com/aktau/github-release v0.7.2

hack/install-go.sh

@@ -0,0 +1,10 @@
+#!/bin/bash -xe
+
+destination=$1
+version=$(grep "^go " go.mod |awk '{print $2}')
+tarball=go$version.linux-amd64.tar.gz
+url=https://dl.google.com/go/
+
+mkdir -p $destination
+curl -L $url/$tarball -o $destination/$tarball
+tar -xvf $destination/$tarball -C $destination