Deuxfleurs
/
albatros
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refactor

This commit is contained in:
Quentin 2023-04-17 11:25:26 +02:00
parent d9facbb79c
commit a0b05a6c2d
Signed by: quentin
GPG Key ID: E9602264D639FF68
12 changed files with 502 additions and 421 deletions
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0
bin/alba.go Normal file
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23
bin/albatros.go Normal file
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package main
import (
"log"
"net/http"
"git.deuxfleurs.fr/deuxfleurs/albatros/pkg"
)
func main() {
config := pkg.BuildConfig()
cluster := pkg.NewCluster(&config)
// init webserver
http.Handle("/hook", pkg.HookHandler{&config, &cluster})
http.Handle("/build", pkg.BuildHandler{&config, &cluster})
// launch
log.Println("Albatros listen on :8080")
if err := http.ListenAndServe(":8080", nil); err != nil {
log.Fatal("Can't start HTTP server")
}
}

13
docker-compose.yml Normal file
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version: '3.4'
services:
nomad:
image: nomad
command: nomad
consul:
image: consul
albatros:
image: dxflrs/albatros:4c8ea6cec9a0645825d2323465784ba3fe4ebf12
ports:
- "8080:8080"
environment:
- ALBATROS_URL="http://localhost:8080"

0
consul/albatros.json → example/albatros.hook.json
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0
consul/gitea.json → example/gitea.hook.json
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421
main.go
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@ -1,421 +0,0 @@
package main
import (
"code.gitea.io/sdk/gitea"
b64 "encoding/base64"
"encoding/json"
"fmt"
"github.com/caarlos0/env/v7"
consul "github.com/hashicorp/consul/api"
nomad "github.com/hashicorp/nomad/api"
"golang.org/x/exp/slices"
"io"
"log"
"net/http"
"strings"
)
/* Albatros CI */
type GitUser struct {
Name string `json:"name"`
Email string `json:"email"`
Username string `json:username"`
}
type GiteaCommit struct {
Id string `json:"id"`
Message string `json:"message"`
Url string `json:"string"`
Author GitUser `json:"author"`
Committer GitUser `json:"committer"`
Timestamp string `json:"timestamp"`
}
type GiteaAccount struct {
Id int64 `json:"id"`
Login string `json:"login"`
FullName string `json:"full_name"`
Email string `json:"email"`
AvatarUrl string `json:"avatar_url"`
Username string `json:"username"`
}
type GiteaRepository struct {
Id int64 `json:"id"`
Owner GiteaAccount `json:"owner"`
Name string `json:"name"`
FullName string `json:"full_name"`
Description string `json:"description"`
Private bool `json:"private"`
Fork bool `json:"private"`
HtmlUrl string `json:"html_url"`
SshUrl string `json:"ssh_url"`
CloneUrl string `json:"clone_url"`
Website string `json:"website"`
StarsCount int64 `json:"stars_count"`
ForksCount int64 `json:"forks_count"`
WatchersCount int64 `json:"watchers_count"`
OpenIssuesCount int64 `json:"open_issues_count"`
DefaultBranch string `json:"default_branch"`
CreatedAt string `json:"created_at"`
UpdatedAt string `json:"updated_at"`
}
type GiteaNotification struct {
Secret string `json:"secret"`
Ref string `json:"ref"`
Before string `json:"before"`
After string `json:"after"`
CompareUrl string `json:"compare_url"`
Commits []GiteaCommit `json:"commits"`
Repository GiteaRepository `json:"repository"`
Pusher GiteaAccount `json:"pusher"`
Sender GiteaAccount `json:"sender"`
}
type SecretHook struct {
Token string `json:"token"`
}
type SecretGitea struct {
Url string `json:"url"`
Token string `json:"token"`
}
type SecretTrusted struct {
Senders []string `json:"senders"`
}
type ConsulSecret struct {
Hook SecretHook `json:"hook"`
Gitea SecretGitea `json:"gitea"`
Trusted SecretTrusted `json:"trusted"`
Inject string `json:"inject"`
}
func nomadToGiteaStatus(summary *nomad.TaskGroupSummary) gitea.StatusState {
if summary.Failed > 0 {
return gitea.StatusError
}
if summary.Lost > 0 || summary.Unknown > 0 {
return gitea.StatusFailure
}
if summary.Queued > 0 || summary.Starting > 0 || summary.Running > 0 {
return gitea.StatusPending
}
if summary.Complete > 0 {
return gitea.StatusSuccess
}
// When the job is just started, all the counters are = 0.
return gitea.StatusPending
}
func notifSummary(notification *GiteaNotification) string {
return fmt.Sprintf("%s/%s:%s", notification.Repository.Owner.Username, notification.Repository.Name, notification.After)
}
func lifecycle(notification *GiteaNotification, dispatch *nomad.JobDispatchResponse, giteaCreds *SecretGitea, flavor string) {
notifInfo := notifSummary(notification)
log.Printf("[lifecycle] Commit to build: %s, Gitea URL: %s\n", notifInfo, giteaCreds.Url)
// init Gitea
forge, err := gitea.NewClient(giteaCreds.Url, gitea.SetToken(giteaCreds.Token))
if err != nil {
log.Printf("Unable to create gitea client for %s: %+v\n", notifInfo, err)
return
}
// get job's deployment
jobs := NomadClient.Jobs()
queryOpt := nomad.QueryOptions{
AllowStale: false,
}
safeguard := 1000
for ; safeguard > 0; safeguard-- {
// Blocking fetch on deployment info
job, meta, err := jobs.Summary(dispatch.DispatchedJobID, &queryOpt)
if err != nil {
log.Printf("[lifecycle] can't fetch job for %s: %+v\n", notifInfo, err)
break
}
queryOpt.WaitIndex = meta.LastIndex
summary, ok := job.Summary["runner"]
if !ok {
log.Printf("[lifecycle] Job %s for %s must contain a 'runner' task\n", job.JobID, notifInfo)
break
}
log.Printf("[lifecycle] Task status for job %s on %s: %+v\n", job.JobID, notifInfo, summary)
// Compute new job state
state := nomadToGiteaStatus(&summary)
// Try updating Gitea commit status
_, _, err = forge.CreateStatus(
notification.Repository.Owner.Username,
notification.Repository.Name,
notification.After,
gitea.CreateStatusOption{
State: state,
TargetURL: GlobalConfig.AlbatrosURL + "/build?log=stderr&job=" + dispatch.DispatchedJobID,
Description: flavor,
Context: "Albatros",
})
if err != nil {
log.Printf("[lifecycle] can't update gitea repo %s for job %s: %+v\n", notifInfo, job.JobID, err)
}
// Continue the loop only if the job is pending
if state != gitea.StatusPending {
log.Printf("Job %s for %s terminated with status %s\n", job.JobID, notifInfo, state)
break
}
}
if safeguard == 0 {
// To avoid dangerous infinite loops, we put an upperbound here
// of 1k refresh here. Reaching this limit will allow us to know
// that something did not work as expected...
log.Printf("!!! [lifecycle] we refreshed 1k times the job of %s and it's still running, giving up...\n", notifInfo)
}
}
func hook(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
http.Error(w, "Hook only support POST requests", http.StatusBadRequest)
}
q := r.URL.Query()
maybeToken, ok := q["token"]
if !ok || len(maybeToken) < 1 {
http.Error(w, "Missing query parameter 'token'. Try adding '?token=xxx'", http.StatusBadRequest)
return
}
token := maybeToken[0]
flavor := "default"
var notification GiteaNotification
dec := json.NewDecoder(r.Body)
if err := dec.Decode(&notification); err != nil {
http.Error(w, "Can't parse your request JSON", http.StatusBadRequest)
return
}
notifInfo := notifSummary(&notification)
log.Printf("Received gitea notification for %s\n", notifInfo)
// Fetch our repo descriptor
kv := ConsulClient.KV()
encodedRepoUrl := b64.StdEncoding.EncodeToString([]byte(notification.Repository.CloneUrl))
key := "albatros/" + encodedRepoUrl
log.Printf("Fetching key %s for %s\n", key, notifInfo)
pair, _, err := kv.Get(key, nil)
if err != nil {
http.Error(w, "Can't fetch the repo descriptor in Consul", http.StatusInternalServerError)
log.Printf("Job error for %s, can't fetch repo descriptor in consul: %+v\n", notifInfo, err)
return
}
if pair == nil || pair.Value == nil {
http.Error(w, "You must declare %s in Consul in order to build it", http.StatusForbidden)
return
}
// Parse our repo descriptor
var repoDesc ConsulSecret
if err = json.Unmarshal(pair.Value, &repoDesc); err != nil {
http.Error(w, "Can't decode your Consul configuration for this repo", http.StatusInternalServerError)
log.Printf("Job error for %s, can't unmarshal the Consul descriptor: %+v\n", notifInfo, err)
return
}
// Check token
if repoDesc.Hook.Token != token {
http.Error(w, "Your albatros token does not match the one declared in Consul", http.StatusForbidden)
return
}
// Build job parameters for Nomad
meta := map[string]string{
"REPO_URL": notification.Repository.CloneUrl,
"COMMIT": notification.After,
"FLAVOR": flavor,
// @FIXME: this code is not correct, this is a hack
"BRANCH": strings.ReplaceAll(notification.Ref, "refs/heads/", ""),
}
// Check sender
payload := []byte{}
if slices.Contains(repoDesc.Trusted.Senders, notification.Sender.Username) {
log.Printf("Trusted build of %s as %s in the list of allowed senders, inject secrets\n", notifInfo, notification.Sender.Username)
// Write payload
payload = []byte(repoDesc.Inject)
}
jobs := NomadClient.Jobs()
dres, _, err := jobs.Dispatch("builder", meta, payload, "albatros", &nomad.WriteOptions{})
if err != nil {
http.Error(w, "Can't submit your job to Nomad", http.StatusInternalServerError)
}
log.Printf("Created job %s for %s\n", dres.DispatchedJobID, notifInfo)
// Start a lifecycle observer to update gitea status
go lifecycle(&notification, dres, &repoDesc.Gitea, flavor)
io.WriteString(w, dres.DispatchedJobID)
}
func build(w http.ResponseWriter, r *http.Request) {
q := r.URL.Query()
jobID, ok := q["job"]
if !ok || len(jobID) < 1 {
http.Error(w, "Missing query parameter 'job'. Try adding '?job=xxx'", http.StatusBadRequest)
return
}
logType, ok := q["log"]
log.Printf("Follow logs for %s\n", jobID)
if !ok || len(logType) < 1 || !(logType[0] == "stdout" || logType[0] == "stderr") {
http.Error(w, "Missing or wrong query parameter 'log'.\nTry adding '?log=stdout' or '?log=stderr'", http.StatusBadRequest)
return
}
logFilter := logType[0]
jobs := NomadClient.Jobs()
allocList, _, err := jobs.Allocations(jobID[0], true, &nomad.QueryOptions{})
if err != nil {
http.Error(w, "Unable to fetch your job on Nomad. Might be garbage collected.", http.StatusInternalServerError)
return
}
if len(allocList) < 1 {
http.Error(w, "Job does not contain at least 1 allocation, can't display logs. Job might be garbage collected. ", http.StatusNotFound)
return
}
myAllocStub := allocList[0]
allocations := NomadClient.Allocations()
myAlloc, _, err := allocations.Info(myAllocStub.ID, &nomad.QueryOptions{})
if err != nil {
http.Error(w, "Allocation does not exist anymore. Allocation might be garbage collected", http.StatusNotFound)
return
}
log.Printf("Selected alloc %s for job %s\n", myAlloc.ID, jobID)
allocFS := NomadClient.AllocFS()
scancel := make(chan struct{})
sframe, serr := allocFS.Logs(myAlloc, true, "executor", logFilter, "start", 0, scancel, &nomad.QueryOptions{})
// stream logs to client's browser
build_loop:
for {
select {
case <-r.Context().Done():
// client disconnect, cleaning
break build_loop
case nomadErr := <-serr:
// an error occured in nomad, inform user and clean
_, _ = io.WriteString(w, fmt.Sprintf("\nBroken stream: %+v\n", nomadErr))
break build_loop
case chunk := <-sframe:
// we get some data from nomad, send it to the client
for i := 0; i < len(chunk.Data); {
written, err := w.Write(chunk.Data[i:])
w.(http.Flusher).Flush() // flush the buffer to send it right now
i += written
if err == io.EOF {
_, _ = io.WriteString(w, "End of file :-)")
break build_loop
} else if err != nil {
_, _ = io.WriteString(w, fmt.Sprintf("\nBroken stream: %+v\n", err))
break build_loop
}
}
}
}
log.Printf("Connection closed, cleaning listeners for %s\n", jobID)
scancel <- struct{}{}
}
var NomadClient *nomad.Client
var ConsulClient *consul.Client
type config struct {
AlbatrosURL string `env:"ALBATROS_URL,required"`
NomadAddr string `env:"NOMAD_ADDR"`
NomadClientCert string `env:"NOMAD_CLIENT_CERT"`
NomadClientKey string `env:"NOMAD_CLIENT_KEY"`
NomadCACert string `env:"NOMAD_CACERT"`
ConsulAddr string `env:"CONSUL_HTTP_ADDR"`
ConsulClientCert string `env:"CONSUL_CLIENT_CERT"`
ConsulClientKey string `env:"CONSUL_CLIENT_KEY"`
ConsulCACert string `env:"CONSUL_CACERT"`
}
var GlobalConfig config
func initConfig() {
if err := env.Parse(&GlobalConfig); err != nil {
log.Fatal(fmt.Sprintf("unable to parse config, error: %+v\n", err))
}
log.Printf("Albatros public URL: %s\n", GlobalConfig.AlbatrosURL)
if GlobalConfig.NomadAddr != "" {
isTLS := GlobalConfig.NomadClientCert != "" && GlobalConfig.NomadClientKey != "" && GlobalConfig.NomadCACert != ""
log.Printf("Nomad URL: %s, TLS: %t\n", GlobalConfig.NomadAddr, isTLS)
} else {
log.Println("Use Nomad default configuration")
}
if GlobalConfig.ConsulAddr != "" {
isTLS := GlobalConfig.ConsulClientCert != "" && GlobalConfig.ConsulClientKey != "" && GlobalConfig.ConsulCACert != ""
log.Printf("Consul URL: %s, TLS: %t\n", GlobalConfig.ConsulAddr, isTLS)
} else {
log.Println("Use Consul default configuration")
}
}
func initNomad() {
var err error
nomadConfig := nomad.DefaultConfig()
nomadConfig.Namespace = "ci"
nomadConfig.Address = GlobalConfig.NomadAddr
nomadConfig.TLSConfig.CACert = GlobalConfig.NomadCACert
nomadConfig.TLSConfig.ClientCert = GlobalConfig.NomadClientCert
nomadConfig.TLSConfig.ClientKey = GlobalConfig.NomadClientKey
NomadClient, err = nomad.NewClient(nomadConfig)
if err != nil {
log.Fatal("Unable to connect to Nomad, check your config and setup")
}
}
func initConsul() {
var err error
consulConfig := consul.DefaultConfig()
consulConfig.Address = GlobalConfig.ConsulAddr
consulConfig.TLSConfig.CAFile = GlobalConfig.ConsulCACert
consulConfig.TLSConfig.CertFile = GlobalConfig.ConsulClientCert
consulConfig.TLSConfig.KeyFile = GlobalConfig.ConsulClientKey
ConsulClient, err = consul.NewClient(consulConfig)
if err != nil {
log.Fatal("Unable to connect to Consul, check your config and setup")
return
}
}
func main() {
var err error
// init components.
initConfig()
initNomad()
initConsul()
// init webserver
http.HandleFunc("/hook", hook)
http.HandleFunc("/build", build)
// launch
log.Println("Albatros listen on :8080")
if err = http.ListenAndServe(":8080", nil); err != nil {
log.Fatal("Can't start HTTP server")
}
}

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pkg/cluster.go Normal file
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package pkg
import (
"log"
consul "github.com/hashicorp/consul/api"
nomad "github.com/hashicorp/nomad/api"
)
type Cluster struct {
Nomad *nomad.Client
Consul *consul.Client
}
func NewCluster(conf* Config) Cluster {
cluster := Cluster{}
// Init Nomad
nomadConfig := nomad.DefaultConfig()
nomadConfig.Namespace = "ci"
nomadConfig.Address = conf.NomadAddr
nomadConfig.TLSConfig.CACert = conf.NomadCACert
nomadConfig.TLSConfig.ClientCert = conf.NomadClientCert
nomadConfig.TLSConfig.ClientKey = conf.NomadClientKey
ncli, err := nomad.NewClient(nomadConfig)
if err != nil {
log.Fatal("Unable to connect to Nomad, check your config and setup")
}
cluster.Nomad = ncli
// Init Consul
consulConfig := consul.DefaultConfig()
consulConfig.Address = conf.ConsulAddr
consulConfig.TLSConfig.CAFile = conf.ConsulCACert
consulConfig.TLSConfig.CertFile = conf.ConsulClientCert
consulConfig.TLSConfig.KeyFile = conf.ConsulClientKey
ccli, err := consul.NewClient(consulConfig)
if err != nil {
log.Fatal("Unable to connect to Consul, check your config and setup")
}
cluster.Consul = ccli
return cluster
}

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pkg/config.go Normal file
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package pkg
import (
"log"
"fmt"
"github.com/caarlos0/env/v7"
)
type Config struct {
AlbatrosURL string `env:"ALBATROS_URL,required"`
NomadAddr string `env:"NOMAD_ADDR"`
NomadClientCert string `env:"NOMAD_CLIENT_CERT"`
NomadClientKey string `env:"NOMAD_CLIENT_KEY"`
NomadCACert string `env:"NOMAD_CACERT"`
ConsulAddr string `env:"CONSUL_HTTP_ADDR"`
ConsulClientCert string `env:"CONSUL_CLIENT_CERT"`
ConsulClientKey string `env:"CONSUL_CLIENT_KEY"`
ConsulCACert string `env:"CONSUL_CACERT"`
}
func BuildConfig() Config {
GlobalConfig := Config{}
if err := env.Parse(&GlobalConfig); err != nil {
log.Fatal(fmt.Sprintf("unable to parse config, error: %+v\n", err))
}
log.Printf("Albatros public URL: %s\n", GlobalConfig.AlbatrosURL)
if GlobalConfig.NomadAddr != "" {
isTLS := GlobalConfig.NomadClientCert != "" && GlobalConfig.NomadClientKey != "" && GlobalConfig.NomadCACert != ""
log.Printf("Nomad URL: %s, TLS: %t\n", GlobalConfig.NomadAddr, isTLS)
} else {
log.Println("Use Nomad default configuration")
}
if GlobalConfig.ConsulAddr != "" {
isTLS := GlobalConfig.ConsulClientCert != "" && GlobalConfig.ConsulClientKey != "" && GlobalConfig.ConsulCACert != ""
log.Printf("Consul URL: %s, TLS: %t\n", GlobalConfig.ConsulAddr, isTLS)
} else {
log.Println("Use Consul default configuration")
}
return GlobalConfig
}

86
pkg/gitea.go Normal file
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package pkg
import (
"fmt"
"code.gitea.io/sdk/gitea"
nomad "github.com/hashicorp/nomad/api"
)
type GitUser struct {
Name string `json:"name"`
Email string `json:"email"`
Username string `json:username"`
}
type GiteaCommit struct {
Id string `json:"id"`
Message string `json:"message"`
Url string `json:"string"`
Author GitUser `json:"author"`
Committer GitUser `json:"committer"`
Timestamp string `json:"timestamp"`
}
type GiteaAccount struct {
Id int64 `json:"id"`
Login string `json:"login"`
FullName string `json:"full_name"`
Email string `json:"email"`
AvatarUrl string `json:"avatar_url"`
Username string `json:"username"`
}
type GiteaRepository struct {
Id int64 `json:"id"`
Owner GiteaAccount `json:"owner"`
Name string `json:"name"`
FullName string `json:"full_name"`
Description string `json:"description"`
Private bool `json:"private"`
Fork bool `json:"private"`
HtmlUrl string `json:"html_url"`
SshUrl string `json:"ssh_url"`
CloneUrl string `json:"clone_url"`
Website string `json:"website"`
StarsCount int64 `json:"stars_count"`
ForksCount int64 `json:"forks_count"`
WatchersCount int64 `json:"watchers_count"`
OpenIssuesCount int64 `json:"open_issues_count"`
DefaultBranch string `json:"default_branch"`
CreatedAt string `json:"created_at"`
UpdatedAt string `json:"updated_at"`
}
type GiteaNotification struct {
Secret string `json:"secret"`
Ref string `json:"ref"`
Before string `json:"before"`
After string `json:"after"`
CompareUrl string `json:"compare_url"`
Commits []GiteaCommit `json:"commits"`
Repository GiteaRepository `json:"repository"`
Pusher GiteaAccount `json:"pusher"`
Sender GiteaAccount `json:"sender"`
}
func nomadToGiteaStatus(summary *nomad.TaskGroupSummary) gitea.StatusState {
if summary.Failed > 0 {
return gitea.StatusError
}
if summary.Lost > 0 || summary.Unknown > 0 {
return gitea.StatusFailure
}
if summary.Queued > 0 || summary.Starting > 0 || summary.Running > 0 {
return gitea.StatusPending
}
if summary.Complete > 0 {
return gitea.StatusSuccess
}
// When the job is just started, all the counters are = 0.
return gitea.StatusPending
}
func notifSummary(notification *GiteaNotification) string {
return fmt.Sprintf("%s/%s:%s", notification.Repository.Owner.Username, notification.Repository.Name, notification.After)
}

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pkg/handler.go Normal file
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package pkg
import (
b64 "encoding/base64"
"encoding/json"
"fmt"
"io"
"log"
"net/http"
"golang.org/x/exp/slices"
"strings"
nomad "github.com/hashicorp/nomad/api"
)
type HookHandler struct {
Config *Config
Cluster *Cluster
}
type BuildHandler struct {
Config *Config
Cluster *Cluster
}
func (h HookHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
http.Error(w, "Hook only support POST requests", http.StatusBadRequest)
return
}
q := r.URL.Query()
maybeToken, ok := q["token"]
if !ok || len(maybeToken) < 1 {
http.Error(w, "Missing query parameter 'token'. Try adding '?token=xxx'", http.StatusBadRequest)
return
}
token := maybeToken[0]
flavor := "default"
var notification GiteaNotification
dec := json.NewDecoder(r.Body)
if err := dec.Decode(&notification); err != nil {
http.Error(w, "Can't parse your request JSON", http.StatusBadRequest)
return
}
notifInfo := notifSummary(&notification)
log.Printf("Received gitea notification for %s\n", notifInfo)
// Fetch our repo descriptor
kv := h.Cluster.Consul.KV()
encodedRepoUrl := b64.StdEncoding.EncodeToString([]byte(notification.Repository.CloneUrl))
key := "albatros/" + encodedRepoUrl
log.Printf("Fetching key %s for %s\n", key, notifInfo)
pair, _, err := kv.Get(key, nil)
if err != nil {
http.Error(w, "Can't fetch the repo descriptor in Consul", http.StatusInternalServerError)
log.Printf("Job error for %s, can't fetch repo descriptor in consul: %+v\n", notifInfo, err)
return
}
if pair == nil || pair.Value == nil {
http.Error(w, "You must declare %s in Consul in order to build it", http.StatusForbidden)
return
}
// Parse our repo descriptor
var repoDesc ConsulSecret
if err = json.Unmarshal(pair.Value, &repoDesc); err != nil {
http.Error(w, "Can't decode your Consul configuration for this repo", http.StatusInternalServerError)
log.Printf("Job error for %s, can't unmarshal the Consul descriptor: %+v\n", notifInfo, err)
return
}
// Check token
if repoDesc.Hook.Token != token {
http.Error(w, "Your albatros token does not match the one declared in Consul", http.StatusForbidden)
return
}
// Build job parameters for Nomad
meta := map[string]string{
"REPO_URL": notification.Repository.CloneUrl,
"COMMIT": notification.After,
"FLAVOR": flavor,
// @FIXME: this code is not correct, this is a hack
"BRANCH": strings.ReplaceAll(notification.Ref, "refs/heads/", ""),
}
// Check sender
payload := []byte{}
if slices.Contains(repoDesc.Trusted.Senders, notification.Sender.Username) {
log.Printf("Trusted build of %s as %s in the list of allowed senders, inject secrets\n", notifInfo, notification.Sender.Username)
// Write payload
payload = []byte(repoDesc.Inject)
}
jobs := h.Cluster.Nomad.Jobs()
dres, _, err := jobs.Dispatch("builder", meta, payload, "albatros", &nomad.WriteOptions{})
if err != nil {
http.Error(w, "Can't submit your job to Nomad", http.StatusInternalServerError)
}
log.Printf("Created job %s for %s\n", dres.DispatchedJobID, notifInfo)
// Start a lifecycle observer to update gitea status
j := Job {
Cluster: h.Cluster,
Config: h.Config,
Notification: &notification,
Dispatch: dres,
Creds: &repoDesc.Gitea,
Flavor: flavor,
}
go j.follow()
io.WriteString(w, dres.DispatchedJobID)
}
func (b BuildHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
q := r.URL.Query()
jobID, ok := q["job"]
if !ok || len(jobID) < 1 {
http.Error(w, "Missing query parameter 'job'. Try adding '?job=xxx'", http.StatusBadRequest)
return
}
logType, ok := q["log"]
log.Printf("Follow logs for %s\n", jobID)
if !ok || len(logType) < 1 || !(logType[0] == "stdout" || logType[0] == "stderr") {
http.Error(w, "Missing or wrong query parameter 'log'.\nTry adding '?log=stdout' or '?log=stderr'", http.StatusBadRequest)
return
}
logFilter := logType[0]
jobs := b.Cluster.Nomad.Jobs()
allocList, _, err := jobs.Allocations(jobID[0], true, &nomad.QueryOptions{})
if err != nil {
http.Error(w, "Unable to fetch your job on Nomad. Might be garbage collected.", http.StatusInternalServerError)
return
}
if len(allocList) < 1 {
http.Error(w, "Job does not contain at least 1 allocation, can't display logs. Job might be garbage collected. ", http.StatusNotFound)
return
}
myAllocStub := allocList[0]
allocations := b.Cluster.Nomad.Allocations()
myAlloc, _, err := allocations.Info(myAllocStub.ID, &nomad.QueryOptions{})
if err != nil {
http.Error(w, "Allocation does not exist anymore. Allocation might be garbage collected", http.StatusNotFound)
return
}
log.Printf("Selected alloc %s for job %s\n", myAlloc.ID, jobID)
allocFS := b.Cluster.Nomad.AllocFS()
scancel := make(chan struct{})
sframe, serr := allocFS.Logs(myAlloc, true, "executor", logFilter, "start", 0, scancel, &nomad.QueryOptions{})
// stream logs to client's browser
io.WriteString(w, fmt.Sprintf("--- Streaming logs for %s, job can take some times to start, be patient ---\n", jobID))
build_loop:
for {
select {
case <-r.Context().Done():
// client disconnect, cleaning
break build_loop
case nomadErr := <-serr:
// an error occured in nomad, inform user and clean
_, _ = io.WriteString(w, fmt.Sprintf("\n--- Broken stream: %+v ---\n", nomadErr))
break build_loop
case chunk := <-sframe:
// we get some data from nomad, send it to the client
for i := 0; i < len(chunk.Data); {
written, err := w.Write(chunk.Data[i:])
w.(http.Flusher).Flush() // flush the buffer to send it right now
i += written
if err == io.EOF {
_, _ = io.WriteString(w, "\n--- End of file :-) ---\n")
break build_loop
} else if err != nil {
_, _ = io.WriteString(w, fmt.Sprintf("\n--- Broken stream: %+v ---\n", err))
break build_loop
}
}
}
}
log.Printf("Connection closed, cleaning listeners for %s\n", jobID)
scancel <- struct{}{}
}

84
pkg/job.go Normal file
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@ -0,0 +1,84 @@
package pkg
import (
"log"
"code.gitea.io/sdk/gitea"
nomad "github.com/hashicorp/nomad/api"
)
type Job struct {
Cluster *Cluster
Config *Config
Notification *GiteaNotification
Dispatch *nomad.JobDispatchResponse
Creds *SecretGitea
Flavor string
}
func (j *Job) follow() {
notifInfo := notifSummary(j.Notification)
log.Printf("[lifecycle] Commit to build: %s, Gitea URL: %s\n", notifInfo, j.Creds.Url)
// init Gitea
forge, err := gitea.NewClient(j.Creds.Url, gitea.SetToken(j.Creds.Token))
if err != nil {
log.Printf("Unable to create gitea client for %s: %+v\n", notifInfo, err)
return
}
// get job's deployment
jobs := j.Cluster.Nomad.Jobs()
queryOpt := nomad.QueryOptions{
AllowStale: false,
}
safeguard := 1000
for ; safeguard > 0; safeguard-- {
// Blocking fetch on deployment info
job, meta, err := jobs.Summary(j.Dispatch.DispatchedJobID, &queryOpt)
if err != nil {
log.Printf("[lifecycle] can't fetch job for %s: %+v\n", notifInfo, err)
break
}
queryOpt.WaitIndex = meta.LastIndex
summary, ok := job.Summary["runner"]
if !ok {
log.Printf("[lifecycle] Job %s for %s must contain a 'runner' task\n", job.JobID, notifInfo)
break
}
log.Printf("[lifecycle] Task status for job %s on %s: %+v\n", job.JobID, notifInfo, summary)
// Compute new job state
state := nomadToGiteaStatus(&summary)
// Try updating Gitea commit status
_, _, err = forge.CreateStatus(
j.Notification.Repository.Owner.Username,
j.Notification.Repository.Name,
j.Notification.After,
gitea.CreateStatusOption{
State: state,
TargetURL: j.Config.AlbatrosURL + "/build?log=stderr&job=" + j.Dispatch.DispatchedJobID,
Description: j.Flavor,
Context: "Albatros",
})
if err != nil {
log.Printf("[lifecycle] can't update gitea repo %s for job %s: %+v\n", notifInfo, job.JobID, err)
}
// Continue the loop only if the job is pending
if state != gitea.StatusPending {
log.Printf("Job %s for %s terminated with status %s\n", job.JobID, notifInfo, state)
break
}
}
if safeguard == 0 {
// To avoid dangerous infinite loops, we put an upperbound here
// of 1k refresh here. Reaching this limit will allow us to know
// that something did not work as expected...
log.Printf("!!! [lifecycle] we refreshed 1k times the job of %s and it's still running, giving up...\n", notifInfo)
}
}

21
pkg/secret.go Normal file
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@ -0,0 +1,21 @@
package pkg
type SecretHook struct {
Token string `json:"token"`
}
type SecretGitea struct {
Url string `json:"url"`
Token string `json:"token"`
}
type SecretTrusted struct {
Senders []string `json:"senders"`
}
type ConsulSecret struct {
Hook SecretHook `json:"hook"`
Gitea SecretGitea `json:"gitea"`
Trusted SecretTrusted `json:"trusted"`
Inject string `json:"inject"`
}