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main.go
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main.go
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package main
import (
"bufio"
"bytes"
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"net/http"
"os"
"path/filepath"
"strings"
"syscall"
"time"
"github.com/in4it/ecs-deploy/api"
"github.com/in4it/ecs-deploy/service"
"github.com/spf13/pflag"
"golang.org/x/crypto/ssh/terminal"
)
type Token struct {
Token string `json:"token" binding:"required"`
Expire string `json:"expire" binding:"required"`
}
type Session struct {
Token string
Url string
Expire string
}
type LoginFlags struct {
Url string
}
type DeployFlags struct {
ServiceName string
Filename string
}
type DeployResponse struct {
Errors map[string]string `json:"errors" binding:"required"`
Failures int64 `json:"failures" binding:"required"`
Messages []service.DeployResult `json:"messages"`
}
type DeployStatusResponse struct {
Service service.DeployResult `json:"service" binding:"required"`
}
func addLoginFlags(f *LoginFlags, fs *pflag.FlagSet) {
fs.StringVar(&f.Url, "url", f.Url, "ecs-deploy url, e.g. https://127.0.0.1:8080/ecs-deploy")
}
func addDeployFlags(f *DeployFlags, fs *pflag.FlagSet) {
fs.StringVar(&f.ServiceName, "service-name", f.ServiceName, "Service name to deploy")
fs.StringVarP(&f.Filename, "filename", "f", f.Filename, "filename to deploy")
}
func main() {
var err error
session, err := readSession()
if err != nil {
fmt.Printf("%v", err.Error())
os.Exit(1)
}
if len(os.Args) > 1 && os.Args[1] == "login" {
// login
loginFlags := &LoginFlags{}
addLoginFlags(loginFlags, pflag.CommandLine)
if len(os.Args) > 2 && os.Args[2] != "" {
pflag.CommandLine.Parse(os.Args[2:])
if loginFlags.Url == "" {
fmt.Fprintf(os.Stderr, "Usage of %s login:\n", os.Args[0])
pflag.PrintDefaults()
os.Exit(1)
}
err = login(loginFlags)
} else {
fmt.Fprintf(os.Stderr, "Usage of %s login:\n", os.Args[0])
pflag.PrintDefaults()
}
} else if len(os.Args) > 2 && os.Args[1] == "createrepo" && os.Args[2] != "" {
// create repo
var result string
result, err = createRepository(session, os.Args[2])
fmt.Printf("%v\n", result)
} else if len(os.Args) > 1 && os.Args[1] == "deploy" {
// deploy
deployFlags := &DeployFlags{}
addDeployFlags(deployFlags, pflag.CommandLine)
if len(os.Args) > 2 && os.Args[2] != "" {
pflag.CommandLine.Parse(os.Args[2:])
failure, err := deploy(session, deployFlags)
if failure {
if err != nil {
fmt.Printf("%v", err.Error())
}
os.Exit(1)
}
} else {
fmt.Fprintf(os.Stderr, "Usage of %s deploy:\n", os.Args[0])
pflag.PrintDefaults()
}
} else {
fmt.Println("Usage: ")
fmt.Printf("%v login login\n", os.Args[0])
fmt.Printf("%v createrepo create repository\n", os.Args[0])
fmt.Printf("%v deploy deploy services\n", os.Args[0])
}
if err != nil {
fmt.Printf("%v", err.Error())
os.Exit(1)
}
}
// deploy with timeouts
// if --service-name is set, look for ecs.json and ecs.*.json (if filename is set, use it as directory to look into)
// if --service-name is set, with filename, give error
// if filename is set but not service name, expect serviceName in json (normal behavior)
func deploy(session Session, deployFlags *DeployFlags) (bool, error) {
deployData, err := getDeployData(session, deployFlags)
if err != nil {
return true, err
}
response, err := doDeployAPICall(session, deployData)
if err != nil {
return true, err
}
deployed, err := waitForDeploy(session, response)
if err != nil {
return true, err
}
fmt.Println("")
fmt.Println("---")
var failure bool
for k, status := range deployed {
fmt.Printf("Service %v deployment status: %v\n", k, status)
if status != "success" {
failure = true
}
}
return failure, nil
}
func waitForDeploy(session Session, response []byte) (map[string]string, error) {
// api call returned info to follow-up on deployment
var deploymentsFinished bool
var deployResponse DeployResponse
var finished int64
deployed := make(map[string]string)
maxWait := 1200
err := json.Unmarshal(response, &deployResponse)
if err != nil {
return deployed, err
}
for _, v := range deployResponse.Messages {
deployed[v.ServiceName] = "running"
}
for k, v := range deployResponse.Errors {
fmt.Printf("Service %v: %v\n", k, v)
deployed[k] = "error"
finished++
}
if int64(len(deployed)) == finished {
deploymentsFinished = true
}
for i := 0; i < (maxWait/15) && !deploymentsFinished; i++ {
time.Sleep(15 * time.Second)
for _, v := range deployResponse.Messages {
if deployed[v.ServiceName] == "running" {
status, err := checkDeployStatus(session, v.ServiceName, v.DeploymentTime.Format("2006-01-02T15:04:05.999999999Z"))
if err != nil {
return deployed, err
}
fmt.Printf(".")
if status != "running" {
deployed[v.ServiceName] = status
fmt.Printf("%v=%v", v.ServiceName, status)
finished++
}
}
}
if int64(len(deployed)) == finished {
deploymentsFinished = true
}
}
return deployed, nil
}
func checkDeployStatus(session Session, serviceName, deploymentTime string) (string, error) {
var status string
var deployStatusResponse DeployStatusResponse
req, err := http.NewRequest("GET", session.Url+"/api/v1/deploy/status/"+serviceName+"/"+deploymentTime, nil)
if err != nil {
return status, err
}
req.Header.Set("Authorization", "Bearer "+session.Token)
var client = &http.Client{
Timeout: time.Second * 15,
}
resp, err := client.Do(req)
if err != nil {
return status, err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return status, err
}
if resp.StatusCode != 200 {
if resp.StatusCode == 401 {
return status, fmt.Errorf("Invalid credentials: use %v login --url <url> to login again\n", os.Args[0])
} else {
return status, fmt.Errorf("Error %d: %v", resp.StatusCode, string(body))
}
}
err = json.Unmarshal(body, &deployStatusResponse)
if err != nil {
return status, err
}
status = deployStatusResponse.Service.Status
return status, nil
}
func doDeployAPICall(session Session, deployData string) ([]byte, error) {
var body []byte
req, err := http.NewRequest("POST", session.Url+"/api/v1/deploy", bytes.NewBuffer([]byte(deployData)))
if err != nil {
return body, err
}
req.Header.Set("Content-Type", "application/json")
req.Header.Set("Authorization", "Bearer "+session.Token)
var client = &http.Client{
Timeout: time.Second * 120,
}
resp, err := client.Do(req)
if err != nil {
return body, err
}
defer resp.Body.Close()
body, err = ioutil.ReadAll(resp.Body)
if err != nil {
return body, err
}
if resp.StatusCode != 200 {
if resp.StatusCode == 401 {
return body, fmt.Errorf("Invalid credentials: use %v login --url <url> to login again\n", os.Args[0])
} else {
return body, fmt.Errorf("Error %d: %v", resp.StatusCode, string(body))
}
}
return body, nil
}
func getDeployData(session Session, deployFlags *DeployFlags) (string, error) {
var deployData string
var readDir string
controller := api.Controller{}
if deployFlags.ServiceName != "" {
// servicename is set
if deployFlags.Filename != "" {
if ok, _ := isDir(deployFlags.Filename); !ok {
return deployData, fmt.Errorf("%v needs to be a directory if --service-name is specified\n", deployFlags.Filename)
}
readDir = deployFlags.Filename
} else {
readDir = "./"
}
files, err := ioutil.ReadDir(readDir)
if err != nil {
return deployData, err
}
fs := []string{}
for _, f := range files {
if f.Name() == "ecs.json" {
fs = append(fs, f.Name())
} else if strings.HasPrefix(f.Name(), "ecs.") && strings.HasSuffix(f.Name(), ".json") {
fs = append(fs, f.Name())
}
}
var deployServices service.DeployServices
for _, f := range fs {
var deploy service.Deploy
controller.SetDeployDefaults(&deploy)
content, err := ioutil.ReadFile(filepath.Join(readDir, f))
if err != nil {
return deployData, fmt.Errorf("Could not read file: %v\n", filepath.Join(readDir, f))
}
err = json.Unmarshal(content, &deploy)
if err != nil {
return deployData, fmt.Errorf("file %v in wrong format: %v", f, err.Error())
}
if f == "ecs.json" {
deploy.ServiceName = deployFlags.ServiceName
} else {
start := 4
end := len(f) - 5
deploy.ServiceName = deployFlags.ServiceName + "-" + f[start:end]
}
deployServices.Services = append(deployServices.Services, deploy)
}
b, err := json.Marshal(deployServices)
if err != nil {
return deployData, err
}
deployData = string(b)
} else if deployFlags.ServiceName == "" && deployFlags.Filename != "" {
// serviceName is not set
content, err := ioutil.ReadFile(deployFlags.Filename)
if ok, _ := isDir(deployFlags.Filename); ok {
return deployData, fmt.Errorf("%v is a directory. Specify a file or use the --service-name argument\n", deployFlags.Filename)
}
if err != nil {
return deployData, fmt.Errorf("Could not read file: %v", deployFlags.Filename)
}
deployData = string(content)
} else {
fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0])
pflag.PrintDefaults()
return deployData, errors.New("InvalidFlags")
}
if deployData == `{"deploy":null}` {
return deployData, errors.New("No deployment data found")
}
return deployData, nil
}
func createRepository(session Session, repository string) (string, error) {
var res string
req, err := http.NewRequest("POST", session.Url+"/api/v1/ecr/create/"+repository, bytes.NewBuffer([]byte("")))
if err != nil {
return res, err
}
req.Header.Set("Content-Type", "application/json")
req.Header.Set("Authorization", "Bearer "+session.Token)
var client = &http.Client{
Timeout: time.Second * 60,
}
resp, err := client.Do(req)
if err != nil {
return res, err
}
if resp.StatusCode != 200 {
if resp.StatusCode == 401 {
return res, fmt.Errorf("Invalid credentials: use %v login --url <url> to login again\n", os.Args[0])
} else {
return res, fmt.Errorf("ecr create return http error %d", resp.StatusCode)
}
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return res, err
}
res = string(body)
return res, nil
}
func readSession() (Session, error) {
var session Session
content, err := ioutil.ReadFile(filepath.Join(os.Getenv("HOME"), ".ecsdeploy", "session.json"))
if err != nil {
// no file present, return empty session
return session, nil
}
err = json.Unmarshal(content, &session)
if err != nil {
return session, err
}
return session, nil
}
func login(loginFlags *LoginFlags) error {
var session Session
var err error
var username, password string
session.Url = loginFlags.Url
if os.Getenv("ECS_DEPLOY_LOGIN") != "" && os.Getenv("ECS_DEPLOY_PASSWORD") != "" {
username = os.Getenv("ECS_DEPLOY_LOGIN")
password = os.Getenv("ECS_DEPLOY_PASSWORD")
} else {
username, password, err = readCredentials()
if err != nil {
return err
}
}
token, err := auth(session.Url, username, password)
if err != nil {
return err
}
newpath := filepath.Join(os.Getenv("HOME"), ".ecsdeploy")
os.MkdirAll(newpath, os.ModePerm)
session.Token = token.Token
session.Expire = token.Expire
b, err := json.Marshal(session)
if err != nil {
return err
}
err = ioutil.WriteFile(filepath.Join(os.Getenv("HOME"), ".ecsdeploy", "session.json"), b, 0600)
if err != nil {
return err
}
fmt.Println("Authentication successful")
return nil
}
func readCredentials() (string, string, error) {
reader := bufio.NewReader(os.Stdin)
fmt.Print("Enter Username: ")
username, _ := reader.ReadString('\n')
fmt.Print("Enter Password: ")
bytePassword, err := terminal.ReadPassword(int(syscall.Stdin))
if err != nil {
return "", "", err
}
password := string(bytePassword)
return strings.TrimSpace(username), strings.TrimSpace(password), nil
}
func auth(url, login, password string) (Token, error) {
var token Token
var jsonStr = []byte("{\"username\":\"" + login + "\",\"password\":\"" + password + "\"}")
req, err := http.NewRequest("POST", url+"/login", bytes.NewBuffer(jsonStr))
if err != nil {
return token, err
}
req.Header.Set("Content-Type", "application/json")
var client = &http.Client{
Timeout: time.Second * 10,
}
resp, err := client.Do(req)
if err != nil {
return token, err
}
if resp.StatusCode != 200 {
return token, errors.New("Authentication failed")
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return token, err
}
err = json.Unmarshal(body, &token)
if err != nil {
return token, err
}
return token, nil
}
func isDir(pth string) (bool, error) {
fi, err := os.Stat(pth)
if err != nil {
return false, err
}
return fi.Mode().IsDir(), nil
}