add multi build

Author: sergeylanzman

build/multi-build/main.go

@@ -0,0 +1,107 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+const filePrefix = "provider_cmd_"
+const fileSuffix = ".go"
+const packageCmdPath = "cmd"
+
+func main() {
+	//provider := os.Args[1]
+	allProviders := []string{}
+	files, err := ioutil.ReadDir(packageCmdPath)
+	if err != nil {
+		log.Println(err)
+	}
+	for _, f := range files {
+		if strings.HasPrefix(f.Name(), filePrefix) {
+			providerName := strings.Replace(f.Name(), filePrefix, "", -1)
+			providerName = strings.Replace(providerName, fileSuffix, "", -1)
+			allProviders = append(allProviders, providerName)
+		}
+	}
+	for _, OS := range []string{"linux", "windows", "mac"} {
+		for _, provider := range allProviders {
+			GOOS := ""
+			binaryName := ""
+			switch OS {
+			case "linux":
+				GOOS = "linux"
+				binaryName = "terraformer-" + provider + "-linux-amd64"
+			case "windows":
+				GOOS = "windows"
+				binaryName = "terraformer-" + provider + "-windows-amd64.exe"
+			case "mac":
+				GOOS = "darwin"
+				binaryName = "terraformer-" + provider + "-darwin-amd64"
+			}
+			log.Println("Build terraformer with "+provider+" provider...", "GOOS=", GOOS)
+			deletedProvider := []string{}
+			for _, f := range files {
+				if strings.HasPrefix(f.Name(), filePrefix) {
+					if !strings.HasPrefix(f.Name(), filePrefix+provider+fileSuffix) {
+						providerName := strings.Replace(f.Name(), filePrefix, "", -1)
+						providerName = strings.Replace(providerName, fileSuffix, "", -1)
+						deletedProvider = append(deletedProvider, providerName)
+					}
+				}
+			}
+			// move files for deleted providers
+			os.MkdirAll(packageCmdPath+"/tmp", os.ModePerm)
+			for _, provider := range deletedProvider {
+				err := os.Rename(packageCmdPath+"/"+filePrefix+provider+fileSuffix, packageCmdPath+"/tmp/"+filePrefix+provider+fileSuffix)
+				if err != nil {
+					log.Println(err)
+				}
+			}
+
+			// comment deleted providers in code
+			rootCode, err := ioutil.ReadFile(packageCmdPath + "/root.go")
+			lines := strings.Split(string(rootCode), "\n")
+			newRootCodeLines := make([]string, len(lines))
+			for i, line := range lines {
+				for _, provider := range deletedProvider {
+					if strings.Contains(strings.ToLower(line), "newcmd"+provider+"importer") {
+						line = "// " + line
+					}
+					if strings.Contains(strings.ToLower(line), "new"+provider+"provider") {
+						line = "// " + line
+					}
+				}
+				newRootCodeLines[i] = line
+			}
+			newRootCode := strings.Join(newRootCodeLines, "\n")
+			ioutil.WriteFile(packageCmdPath+"/root.go", []byte(newRootCode), os.ModePerm)
+
+			// build....
+			cmd := exec.Command("go", "build", "-v", "-o", binaryName)
+			cmd.Env = os.Environ()
+			cmd.Env = append(cmd.Env, "GOOS="+GOOS)
+			var outb, errb bytes.Buffer
+			cmd.Stdout = &outb
+			cmd.Stderr = &errb
+			err = cmd.Run()
+			if err != nil {
+				log.Fatal("err:", errb.String())
+			}
+			fmt.Println(outb.String())
+
+			//revert code and files
+			ioutil.WriteFile(packageCmdPath+"/root.go", []byte(rootCode), os.ModePerm)
+			for _, provider := range deletedProvider {
+				err := os.Rename(packageCmdPath+"/tmp/"+filePrefix+provider+fileSuffix, "cmd/"+filePrefix+provider+fileSuffix)
+				if err != nil {
+					log.Println(err)
+				}
+			}
+		}
+	}
+}