add confgenerator docker support

Makefile

@@ -76,6 +76,7 @@ lint: $(GOLANGCI_LINT) ## Lint the code
 build_code: validate_go lint
 	@go mod vendor
 	go build -ldflags "-X 'main.BuildVersion=$(BUILD_VERSION)' -X 'main.BuildDate=$(BUILD_DATE)'" "${CMD_DIR}${FLP_BIN_FILE}"
+	go build -ldflags "-X 'main.BuildVersion=$(BUILD_VERSION)' -X 'main.BuildDate=$(BUILD_DATE)'" "${CMD_DIR}${CG_BIN_FILE}"
 
 .PHONY: build
 build: build_code docs ## Build flowlogs-pipeline executable and update the docs

cmd/confgenerator/main.go

@@ -33,6 +33,8 @@ import (
 )
 
 var (
+	BuildVersion       string
+	BuildDate          string
 	cfgFile            string
 	logLevel           string
 	envPrefix          = "FLP_CONFGEN"
@@ -143,8 +145,9 @@ func main() {
 }
 
 func run() {
-	// Starting log message
-	log.Infof("starting %s", filepath.Base(os.Args[0]))
+	// Initial log message
+	fmt.Printf("Starting %s:\n=====\nBuild Version: %s\nBuild Date: %s\n\n",
+		filepath.Base(os.Args[0]), BuildVersion, BuildDate)
 	// Dump the configuration
 	dumpConfig()
 	// creating a new configuration generator

cmd/confgenerator/main_test.go

@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2022 IBM, 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 main
+
+import (
+	"os"
+	"os/exec"
+	"testing"
+)
+
+func TestTheMain(t *testing.T) {
+	if os.Getenv("BE_CRASHER") == "1" {
+		main()
+		return
+	}
+	cmd := exec.Command(os.Args[0], "-test.run=TestTheMain")
+	cmd.Env = append(os.Environ(), "BE_CRASHER=1")
+	err := cmd.Run()
+	if e, ok := err.(*exec.ExitError); ok && !e.Success() {
+		return
+	}
+	t.Fatalf("process ran with err %v, want exit status 1", err)
+}

contrib/docker/Dockerfile

@@ -18,11 +18,14 @@ RUN make build_code
 
 # final stage
 FROM ubuntu
-RUN apt-get update -y
-RUN apt-get install -y netbase
-RUN apt-get install -y curl
-RUN apt-get install -y net-tools
+RUN apt-get update && apt-get install -y \
+  netbase \
+  curl \
+  net-tools \
+  && rm -rf /var/lib/apt/lists/*
+
 COPY --from=builder /app/flowlogs-pipeline /app/
+COPY --from=builder /app/confgenerator /app/
 
 # expose ports
 EXPOSE 2055

docs/confGenerator.md

@@ -30,6 +30,9 @@ Flags:
 
 ```
 
+> Note: confgenerator is available also from `netobserv/flowlogs-pipeline` quay image. To use execute:  
+> `docker run --entrypoint /app/confgenerator quay.io/netobserv/flowlogs-pipeline:latest --help` 
+
 > Note: The default location for network definitions in flowlogs-pipeline is `/network_definitions` folder
 
 The files and folder structure required as input for `confGenerator` are: