add step to auto generate versions.go in Makefile

Makefile

@@ -1,9 +1,30 @@
 MAKEFLAGS += --warn-undefined-variables
 SHELL := /bin/bash -o pipefail
 
+export PROJECT_BRANCH ?=$(shell git rev-parse --abbrev-ref HEAD)
+export PROJECT_SHA ?= $(shell git rev-parse HEAD)
 export GO111MODULE = on
 
-default: lint test
+define VERSIONS_FILE
+package versions
+
+// Various version information.
+var (
+	ProjectVersion = "$(PROJECT_BRANCH)"
+	ProjectSha     = "$(PROJECT_SHA)"
+)
+
+// Versions of the various libraries used by the project.
+var ()
+endef
+export VERSIONS_FILE
+
+default: versions lint test
+
+versions:
+	@echo generating cmd/elegen/versions.go
+	@mkdir -p ./internal/versions
+	@echo "$$VERSIONS_FILE" > ./cmd/elegen/versions/versions.go
 
 lint:
 	golangci-lint run \

cmd/elegen/versions/utils.go

@@ -0,0 +1,50 @@
+// Copyright 2019 Aporeto Inc.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//     http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package versions
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"go.uber.org/zap/zapcore"
+)
+
+// Fields returns a ready to dump zap.Fields containing all the versions used.
+func Fields() []zapcore.Field {
+
+	return []zapcore.Field{}
+}
+
+// Map returns the version information as a map.
+func Map() map[string]any {
+
+	return map[string]any{
+		"version": ProjectVersion,
+		"sha":     ProjectSha[0:7],
+		"libs":    map[string]string{},
+	}
+}
+
+// ToString returns the string version of versions
+func ToString(prefix string) string {
+
+	buffer := fmt.Sprintf("%s%32s : %s\n", prefix, "ProjectVersion", ProjectVersion)
+	buffer += fmt.Sprintf("%s%32s : %s\n", prefix, "ProjectSha", ProjectSha[0:7])
+	buffer += fmt.Sprintf("%s%32s : %s\n", prefix, "Libraries", "")
+	return buffer
+}
+
+// JSON returns the version as a ready to send json data.
+func JSON() ([]byte, error) {
+
+	return json.MarshalIndent(Map(), "", "    ")
+}

cmd/elegen/versions/versions.go

@@ -1,61 +1,10 @@
-// Copyright 2019 Aporeto Inc.
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//     http://www.apache.org/licenses/LICENSE-2.0
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 package versions
 
-// This code is autogenerated by apolibver. Do not edit manually.
-
-import (
-	"encoding/json"
-	"fmt"
-
-	"go.uber.org/zap/zapcore"
-)
-
-// Versions of the current project.
+// Various version information.
 var (
 	ProjectVersion = "master"
-	ProjectSha     = "edcc353e7c61c4c3775380b37e04ca8ba747d13f"
+	ProjectSha     = "6f8c7be6698cfa85da84aa8dcc1e4c2815a9c8c1"
 )
 
 // Versions of the various libraries used by the project.
 var ()
-
-// Fields returns a ready to dump zap.Fields containing all the versions used.
-func Fields() []zapcore.Field {
-
-	return []zapcore.Field{}
-}
-
-// Map returns the version information as a map.
-func Map() map[string]any {
-
-	return map[string]any{
-		"version": ProjectVersion,
-		"sha":     ProjectSha[0:7],
-		"libs":    map[string]string{},
-	}
-}
-
-// ToString returns the string version of versions
-func ToString(prefix string) string {
-
-	buffer := fmt.Sprintf("%s%32s : %s\n", prefix, "ProjectVersion", ProjectVersion)
-	buffer += fmt.Sprintf("%s%32s : %s\n", prefix, "ProjectSha", ProjectSha[0:7])
-	buffer += fmt.Sprintf("%s%32s : %s\n", prefix, "Libraries", "")
-	return buffer
-}
-
-// JSON returns the version as a ready to send json data.
-func JSON() ([]byte, error) {
-
-	return json.MarshalIndent(Map(), "", "    ")
-}