/
main.go
539 lines (484 loc) · 15.8 KB
/
main.go
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package main
import (
"bytes"
"fmt"
"io/ioutil"
"net/http"
"os"
"os/exec"
"path/filepath"
"regexp"
"sort"
"strconv"
"strings"
"text/template"
"time"
"github.com/asaskevich/govalidator"
"github.com/blang/semver"
"github.com/drone/drone-plugin-go/plugin"
"github.com/heroku/docker-registry-client/registry"
yaml "gopkg.in/yaml.v2"
)
const (
baseDir string = "/rancher-catalog"
repoDir string = "/rancher-catalog/repo"
templateDir string = "/rancher-catalog/repo/base"
dockerComposeTemplateFile string = "/rancher-catalog/repo/base/docker-compose.tmpl"
rancherComposeTemplateFile string = "/rancher-catalog/repo/base/rancher-compose.tmpl"
configTemplateFile string = "/rancher-catalog/repo/base/config.tmpl"
iconFileBase string = "/rancher-catalog/repo/base/catalogIcon"
)
// catalog struct
type catalog struct {
vargs vargs
workspace plugin.Workspace
repo plugin.Repo
build plugin.Build
}
// vargs strct
type vargs struct {
DockerRepo string `json:"docker_repo"`
DockerUsername string `json:"docker_username"`
DockerPassword string `json:"docker_password"`
DockerURL string `json:"docker_url"`
CatalogRepo string `json:"catalog_repo"`
GitHubToken string `json:"github_token"`
GitHubUser string `json:"github_user"`
GitHubEmail string `json:"github_email"`
CowpokeURL string `json:"cowpoke_url"`
RancherCatalogName string `json:"rancher_catalog_name"`
BearerToken string `json:"bearer_token"`
}
// tagsByBranch struct
type tagsByBranch struct {
branches map[string]branch
}
type TagsYaml struct {
Tags []string `yaml:"tags"`
}
// branch struct
type branch struct {
versions map[string]version
}
// version struct
type version struct {
builds map[int]*Tag
}
// Tag struct
type Tag struct {
Tag string
Count int
Owner string
Project string
Branch string
Version string
Build int
SHA string
}
func buildCatalogCreationCheckRequest(repo string, branch string, number int, token string) *http.Request {
url := fmt.Sprintf("https://api.github.com/repos/%s/contents/templates/%s/%d", repo, branch, number)
if !govalidator.IsURL(url) {
return nil
}
request, err := http.NewRequest("GET", url, nil)
if err != nil {
fmt.Print(err.Error())
return nil
}
request.SetBasicAuth(token, "x-oauth-basic")
request.Close = true
return request
}
func getTagsFromYaml(workspace plugin.Workspace) []string {
path := filepath.Join(workspace.Path, ".droneTags.yml")
file, err := ioutil.ReadFile(path)
if err != nil {
fmt.Println("error opening .droneTags.yml file", err)
os.Exit(1)
}
var droneTags TagsYaml
yaml.Unmarshal(file, &droneTags)
return droneTags.Tags
}
func stringInSlice(str string, list []string) bool {
for _, v := range list {
if v == str {
return true
}
}
return false
}
func check(val string, err string) {
if len(val) == 0 {
fmt.Println(err)
os.Exit(1)
}
}
func main() {
fmt.Println("starting drone-rancher-catalog...")
var catalog = catalog{}
plugin.Param("workspace", &catalog.workspace)
plugin.Param("repo", &catalog.repo)
plugin.Param("build", &catalog.build)
plugin.Param("vargs", &catalog.vargs)
plugin.MustParse()
check(catalog.vargs.DockerRepo, "ERROR: docker_repo: Docker Registry Repo to read tags from, not specified")
check(catalog.vargs.DockerUsername, "ERROR: docker_username: Docker Registry Username not specified")
check(catalog.vargs.DockerPassword, "ERROR: docker_password: Docker Registry Password not specified")
check(catalog.vargs.CatalogRepo, "ERROR: catalog_repo: GitHub Catalog Repo not specified")
check(catalog.vargs.GitHubToken, "ERROR: github_token: GitHub User Token not specified")
check(catalog.vargs.CowpokeURL, "ERROR: cowpoke_url: cowpoke url not specified")
check(catalog.vargs.RancherCatalogName, "ERROR: rancher_catalog_name: catalog name in rancher is not specified")
if len(catalog.vargs.DockerURL) == 0 {
catalog.vargs.DockerURL = "https://registry.hub.docker.com/"
}
if len(catalog.vargs.GitHubUser) == 0 {
catalog.vargs.GitHubUser = catalog.build.Author
}
if len(catalog.vargs.GitHubEmail) == 0 {
catalog.vargs.GitHubEmail = catalog.build.Email
}
// create a dir outside the workspace
if !exists(baseDir) {
os.Mkdir(baseDir, 0755)
}
catalog.cloneCatalogRepo()
os.Chdir(repoDir)
catalog.gitConfigureEmail()
catalog.gitConfigureUser()
if !exists("./templates") {
os.Mkdir("./templates", 0755)
}
dockerComposeTmpl := catalog.parseTemplateFile(dockerComposeTemplateFile)
rancherComposeTmpl := catalog.parseTemplateFile(rancherComposeTemplateFile)
configTmpl := catalog.parseTemplateFile(configTemplateFile)
upgradeTags := getTagsFromYaml(catalog.workspace)
tags := catalog.getTags()
tbb := catalog.TagsByBranch(tags)
var cowpokeRequests []*http.Request
var catalogCreationCheckRequests []*http.Request
fmt.Println("Creating Catalog Templates for:")
for branch := range tbb.branches {
var count int
var last *Tag
// create branch dir
branchDir := fmt.Sprintf("./templates/%s", branch)
if !exists(branchDir) {
os.Mkdir(branchDir, 0755)
}
// sort semver so we can count builds in a feature branch
var vKeys []semver.Version
for k := range tbb.branches[branch].versions {
version, err := semver.Parse(k)
if err != nil {
fmt.Printf("Error parsing version %v \n", err)
continue
}
vKeys = append(vKeys, version)
}
semver.Sort(vKeys)
for _, version := range vKeys {
// sort builds to count in order
var bKeys []int
ver := version.String()
for k := range tbb.branches[branch].versions[ver].builds {
bKeys = append(bKeys, k)
}
sort.Ints(bKeys)
for _, build := range bKeys {
tbb.branches[branch].versions[ver].builds[build].Count = count
// create dir structure
buildDir := fmt.Sprintf("%s/%d", branchDir, count)
if !exists(buildDir) {
fmt.Printf(" %d:%s %s-%d\n", count, branch, ver, build)
os.Mkdir(buildDir, 0755)
}
// create docker-compose.yml and rancher-compose.yml from template
// don't generate files if they already exist
dockerComposeTarget := fmt.Sprintf("%s/docker-compose.yml", buildDir)
if !exists(dockerComposeTarget) {
catalog.executeTemplate(dockerComposeTarget, dockerComposeTmpl, tbb.branches[branch].versions[ver].builds[build])
}
rancherComposeTarget := fmt.Sprintf("%s/rancher-compose.yml", buildDir)
if !exists(rancherComposeTarget) {
catalog.executeTemplate(rancherComposeTarget, rancherComposeTmpl, tbb.branches[branch].versions[ver].builds[build])
}
last = tbb.branches[branch].versions[ver].builds[build]
count++
}
if stringInSlice(last.Tag, upgradeTags) {
//count was already incremented so it needs to be decremented for the cowpoke request.
//it is important for iteration that there be the same number of elements in both of these arrays
//Therefore even if buildCatalogCheckRequest returns nil we add it to the slice. The nil check happens doRequest
catalogCreationCheckRequests = append(catalogCreationCheckRequests, buildCatalogCreationCheckRequest(catalog.vargs.CatalogRepo, branch, count-1, catalog.vargs.GitHubToken))
cowpokeRequests = append(cowpokeRequests, cowpokeRequest(count-1, branch, catalog.vargs.CatalogRepo, catalog.vargs.RancherCatalogName, catalog.vargs.GitHubToken, catalog.vargs.CowpokeURL, catalog.vargs.BearerToken))
}
}
// create config.yml from temlplate
configTarget := fmt.Sprintf("%s/config.yml", branchDir)
catalog.executeTemplate(configTarget, configTmpl, last)
// Icon file
copyIcon(iconFileBase, branchDir)
}
// TODO: Delete dir/files if tags don't exist anymore. Need to maintian build dir numbering
if catalog.gitChanged() {
catalog.addCatalogRepo()
catalog.commitCatalogRepo()
catalog.pushCatalogRepo()
}
client := &http.Client{
Timeout: time.Second * 60,
}
time.Sleep(3000 * time.Millisecond) //give github time to be consisitent
for index, request := range cowpokeRequests {
doRequest(catalogCreationCheckRequests[index], request, client)
}
fmt.Println("... Finished drone-rancher-catalog")
}
func doRequest(check *http.Request, upgrade *http.Request, client *http.Client) {
catalogIsThere := false
for !catalogIsThere && check != nil {
time.Sleep(50 * time.Millisecond)
response, err := client.Do(check)
if err != nil {
fmt.Printf(err.Error())
break
}
catalogIsThere = response.StatusCode != 404
}
response, err := client.Do(upgrade)
if err != nil {
fmt.Println("error executing request:", response, err)
return
}
contents, err := ioutil.ReadAll(response.Body)
if err != nil {
fmt.Println("error reading response:", err)
}
fmt.Println("response status code:", response.StatusCode)
fmt.Println("content:", string(contents))
response.Body.Close()
}
//calls cowpoke after catalog is built
func cowpokeRequest(catalogNo int, branchName string, CatalogRepo string, rancherCatalogName string, token string, CowpokeURL string, BearerToken string) *http.Request {
var jsonStr = []byte(fmt.Sprintf(`{"catalog":"%s","rancherCatalogName":"%s","githubToken":"%s","catalogVersion":"%s","branch":"%s"}`, CatalogRepo, rancherCatalogName, token, strconv.Itoa(catalogNo), branchName))
request, err := http.NewRequest("PATCH", CowpokeURL+"/api/stack", bytes.NewBuffer(jsonStr))
request.Header.Set("Content-Type", "application/json")
request.Header.Set("bearer", BearerToken)
if err != nil {
fmt.Println("Error making request object to cowpoke")
panic(err)
}
request.Close = true
return request
}
func (c *catalog) getTags() []string {
hub, err := registry.New(c.vargs.DockerURL, c.vargs.DockerUsername, c.vargs.DockerPassword)
if err != nil {
fmt.Println("ERROR: Could not Contact Docker Registry", err)
os.Exit(1)
}
tags, err := hub.Tags(c.vargs.DockerRepo)
if err != nil {
fmt.Println("ERROR: Getting tags", err)
os.Exit(1)
}
return tags
}
// parseTag Returns a Tag object from a buildgoogles style tag
func (c *catalog) parseTag(t string) *Tag {
var tag = &Tag{}
featureRe := regexp.MustCompile(fmt.Sprintf(`^%s_%s_`, c.repo.Owner, c.repo.Name))
releaseRe := regexp.MustCompile(`^v\d+\.\d+\.\d+$`)
// Skip forks and other nonsense tags
switch {
case featureRe.MatchString(t):
var build string
// fmt.Println("Found Feature Branch Tag", t)
tagParts := strings.Split(t, "_")
// shift the owner and project from the front
// pop the sha, build, and version from the back
// join whats left into the branch
tag.Tag = t
tag.Owner, tagParts = tagParts[0], tagParts[1:]
tag.Project, tagParts = tagParts[0], tagParts[1:]
tag.SHA, tagParts = tagParts[len(tagParts)-1], tagParts[:len(tagParts)-1]
build, tagParts = tagParts[len(tagParts)-1], tagParts[:len(tagParts)-1]
tag.Build, _ = strconv.Atoi(build)
tag.Version, tagParts = tagParts[len(tagParts)-1], tagParts[:len(tagParts)-1]
tag.Branch = strings.Join(tagParts, "_")
case releaseRe.MatchString(t):
// fmt.Println("Found Release Tag", t)
tag.Tag = t
tag.Owner = c.repo.Owner
tag.Project = c.repo.Name
tag.Branch = "master"
tag.Build = 1
tag.SHA = ""
versionRe := regexp.MustCompile(`^v`)
tag.Version = versionRe.ReplaceAllString(t, "")
default:
return nil
}
return tag
}
// tagsByBranch break down tag list and return a tagsByBranch object
func (c *catalog) TagsByBranch(tags []string) *tagsByBranch {
tbb := &tagsByBranch{}
tbb.branches = make(map[string]branch)
for _, tg := range tags {
t := c.parseTag(tg)
if t == nil {
continue
}
if _, present := tbb.branches[t.Branch]; !present {
tbb.branches[t.Branch] = branch{
versions: make(map[string]version),
}
}
if _, present := tbb.branches[t.Branch].versions[t.Version]; !present {
tbb.branches[t.Branch].versions[t.Version] = version{
builds: make(map[int]*Tag),
}
}
if _, present := tbb.branches[t.Branch].versions[t.Version].builds[t.Build]; !present {
tbb.branches[t.Branch].versions[t.Version].builds[t.Build] = t
}
}
return tbb
}
func exists(f string) bool {
if _, err := os.Stat(f); os.IsNotExist(err) {
return false
}
return true
}
func (c *catalog) cloneCatalogRepo() {
gitHubURL := fmt.Sprintf("https://%s:x-oauth-basic@github.com/%s.git", c.vargs.GitHubToken, c.vargs.CatalogRepo)
fmt.Println("Cloning Rancher-Catalog repo:", c.vargs.CatalogRepo)
// clear if existing and git clone target repo
os.RemoveAll(repoDir)
out, err := exec.Command("git", "clone", gitHubURL, repoDir).CombinedOutput()
fmt.Println(string(out))
if err != nil {
fmt.Printf("ERROR: Failed to Clone Repo %v\n", err)
os.Exit(1)
}
}
func (c *catalog) addCatalogRepo() {
cmd := exec.Command("git", "add", "-A")
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
err := cmd.Run()
if err != nil {
fmt.Printf("ERROR: Failed to git add %v\n", err)
os.Exit(1)
}
}
func (c *catalog) commitCatalogRepo() {
message := fmt.Sprintf("'Update from Drone Build: %d'", c.build.Number)
cmd := exec.Command("git", "commit", "-m", message)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
err := cmd.Run()
if err != nil {
fmt.Printf("ERROR: Failed to git commit %v\n", err)
os.Exit(1)
}
}
func (c *catalog) pushCatalogRepo() {
cmd := exec.Command("git", "push")
err := cmd.Run()
// Not showing output, bleeds the API key
if err != nil {
fmt.Printf("ERROR: Failed to git push %v\n", err)
fmt.Printf("This can happen because: ")
fmt.Printf("\tA) There is a concurrent build on this project that already built the catalog and upgraded the stack.")
fmt.Printf("\tB) There was network issue, and restarting the build should work")
fmt.Printf("\tC) The Github user may not have write access to the catalog repo")
fmt.Printf("\tD) If none of those apply, then you may have found a bug in this plugin and should file an issue with us here at leankit")
os.Exit(0)
}
}
func (c *catalog) parseTemplateFile(file string) *template.Template {
name := filepath.Base(file)
tmpl, err := template.New(name).ParseFiles(file)
if err != nil {
fmt.Printf("ERROR: Failed parse template %v\n", err)
os.Exit(1)
}
return tmpl
}
func (c *catalog) executeTemplate(target string, tmpl *template.Template, tag *Tag) {
targetFile, err := os.Create(target)
if err != nil {
fmt.Printf("ERROR: Failed to open file %v\n", err)
os.Exit(1)
}
err = tmpl.Execute(targetFile, tag)
if err != nil {
fmt.Printf("ERROR: Failed execute template %v\n", err)
os.Exit(1)
}
targetFile.Close()
}
// copy src.* (repo/base/catalogIcon.*) to dest directory
func copy(src string, dest string) {
cmd := exec.Command("cp", src, dest)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
err := cmd.Run()
if err != nil {
fmt.Printf("ERROR: Failed to cp %v\n", err)
os.Exit(1)
}
}
func copyIcon(src string, dest string) {
dir := filepath.Dir(src)
base := filepath.Base(src)
// find files in dir that match base
iconRe := regexp.MustCompile(fmt.Sprintf(`^%s`, base))
files, _ := ioutil.ReadDir(dir)
for _, f := range files {
if iconRe.MatchString(f.Name()) {
name := fmt.Sprintf("%s/%s", dir, f.Name())
copy(name, dest)
}
}
}
func (c *catalog) gitConfigureEmail() {
cmd := exec.Command("git", "config", "user.email", c.vargs.GitHubEmail)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
err := cmd.Run()
if err != nil {
fmt.Printf("ERROR: Failed to git config %v\n", err)
os.Exit(1)
}
}
func (c *catalog) gitConfigureUser() {
cmd := exec.Command("git", "config", "user.name", c.vargs.GitHubUser)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
err := cmd.Run()
if err != nil {
fmt.Printf("ERROR: Failed to git config %v\n", err)
os.Exit(1)
}
}
// returns true if there are files that need to be commited.
func (c *catalog) gitChanged() bool {
cmd := exec.Command("git", "status", "--porcelain")
out, err := cmd.Output()
if err != nil {
fmt.Printf("ERROR: Failed to git status %v\n", err)
os.Exit(1)
}
// no output means no changes.
if len(out) == 0 {
fmt.Println("No files changed.")
return false
}
fmt.Println("Files changed, add/commit/push changes.")
return true
}