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Code Issues Projects Releases Wiki Activity

Factor into Runner

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This commit is contained in:
Laszlo Fogas 2019-04-13 16:54:39 +02:00
parent bc7d8c9bb5
commit 7f4a0c8c12
2 changed files with 8 additions and 407 deletions
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348
cmd/drone-agent/agent.go
View file

@ -16,24 +16,16 @@ package main
import (
"context"
"encoding/json"
"io"
"io/ioutil"
"net/http"
"os"
"strconv"
"sync"
"time"
"google.golang.org/grpc"
"google.golang.org/grpc/keepalive"
"google.golang.org/grpc/metadata"
"github.com/laszlocph/drone-oss-08/cncd/pipeline/pipeline"
"github.com/laszlocph/drone-oss-08/cncd/pipeline/pipeline/backend"
"github.com/laszlocph/drone-oss-08/cncd/pipeline/pipeline/backend/docker"
"github.com/laszlocph/drone-oss-08/cncd/pipeline/pipeline/multipart"
"github.com/laszlocph/drone-oss-08/cncd/pipeline/pipeline/rpc"
"github.com/laszlocph/drone-oss-08/runner"
"github.com/drone/signal"
"github.com/rs/zerolog"
@ -43,6 +35,10 @@ import (
oldcontext "golang.org/x/net/context"
)
var counter = &runner.State{
Metadata: map[string]runner.Info{},
}
func loop(c *cli.Context) error {
filter := rpc.Filter{
Labels: map[string]string{
@ -124,12 +120,8 @@ func loop(c *cli.Context) error {
if sigterm.IsSet() {
return
}
r := runner{
client: client,
filter: filter,
hostname: hostname,
}
if err := r.run(ctx); err != nil {
r := runner.NewRunner(client, filter, hostname, counter)
if err := r.Run(ctx); err != nil {
log.Error().Err(err).Msg("pipeline done with error")
return
}
@ -141,322 +133,6 @@ func loop(c *cli.Context) error {
return nil
}
// NOTE we need to limit the size of the logs and files that we upload.
// The maximum grpc payload size is 4194304. So until we implement streaming
// for uploads, we need to set these limits below the maximum.
const (
maxLogsUpload = 2000000 // this is per step
maxFileUpload = 1000000
)
type runner struct {
client rpc.Peer
filter rpc.Filter
hostname string
}
func (r *runner) run(ctx context.Context) error {
log.Debug().
Msg("request next execution")
meta, _ := metadata.FromOutgoingContext(ctx)
ctxmeta := metadata.NewOutgoingContext(context.Background(), meta)
// get the next job from the queue
work, err := r.client.Next(ctx, r.filter)
if err != nil {
return err
}
if work == nil {
return nil
}
timeout := time.Hour
if minutes := work.Timeout; minutes != 0 {
timeout = time.Duration(minutes) * time.Minute
}
counter.Add(
work.ID,
timeout,
extractRepositoryName(work.Config), // hack
extractBuildNumber(work.Config), // hack
)
defer counter.Done(work.ID)
logger := log.With().
Str("repo", extractRepositoryName(work.Config)). // hack
Str("build", extractBuildNumber(work.Config)). // hack
Str("id", work.ID).
Logger()
logger.Debug().
Msg("received execution")
// new docker engine
engine, err := docker.NewEnv()
if err != nil {
logger.Error().
Err(err).
Msg("cannot create docker client")
return err
}
ctx, cancel := context.WithTimeout(ctxmeta, timeout)
defer cancel()
cancelled := abool.New()
go func() {
logger.Debug().
Msg("listen for cancel signal")
if werr := r.client.Wait(ctx, work.ID); werr != nil {
cancelled.SetTo(true)
logger.Warn().
Err(werr).
Msg("cancel signal received")
cancel()
} else {
logger.Debug().
Msg("stop listening for cancel signal")
}
}()
go func() {
for {
select {
case <-ctx.Done():
logger.Debug().
Msg("pipeline done")
return
case <-time.After(time.Minute):
logger.Debug().
Msg("pipeline lease renewed")
r.client.Extend(ctx, work.ID)
}
}
}()
state := rpc.State{}
state.Started = time.Now().Unix()
err = r.client.Init(ctxmeta, work.ID, state)
if err != nil {
logger.Error().
Err(err).
Msg("pipeline initialization failed")
}
var uploads sync.WaitGroup
defaultLogger := pipeline.LogFunc(func(proc *backend.Step, rc multipart.Reader) error {
loglogger := logger.With().
Str("image", proc.Image).
Str("stage", proc.Alias).
Logger()
part, rerr := rc.NextPart()
if rerr != nil {
return rerr
}
uploads.Add(1)
var secrets []string
for _, secret := range work.Config.Secrets {
if secret.Mask {
secrets = append(secrets, secret.Value)
}
}
loglogger.Debug().Msg("log stream opened")
limitedPart := io.LimitReader(part, maxLogsUpload)
logstream := rpc.NewLineWriter(r.client, work.ID, proc.Alias, secrets...)
io.Copy(logstream, limitedPart)
loglogger.Debug().Msg("log stream copied")
file := &rpc.File{}
file.Mime = "application/json+logs"
file.Proc = proc.Alias
file.Name = "logs.json"
file.Data, _ = json.Marshal(logstream.Lines())
file.Size = len(file.Data)
file.Time = time.Now().Unix()
loglogger.Debug().
Msg("log stream uploading")
if serr := r.client.Upload(ctxmeta, work.ID, file); serr != nil {
loglogger.Error().
Err(serr).
Msg("log stream upload error")
}
loglogger.Debug().
Msg("log stream upload complete")
defer func() {
loglogger.Debug().
Msg("log stream closed")
uploads.Done()
}()
part, rerr = rc.NextPart()
if rerr != nil {
return nil
}
// TODO should be configurable
limitedPart = io.LimitReader(part, maxFileUpload)
file = &rpc.File{}
file.Mime = part.Header().Get("Content-Type")
file.Proc = proc.Alias
file.Name = part.FileName()
file.Data, _ = ioutil.ReadAll(limitedPart)
file.Size = len(file.Data)
file.Time = time.Now().Unix()
file.Meta = map[string]string{}
for key, value := range part.Header() {
file.Meta[key] = value[0]
}
loglogger.Debug().
Str("file", file.Name).
Str("mime", file.Mime).
Msg("file stream uploading")
if serr := r.client.Upload(ctxmeta, work.ID, file); serr != nil {
loglogger.Error().
Err(serr).
Str("file", file.Name).
Str("mime", file.Mime).
Msg("file stream upload error")
}
loglogger.Debug().
Str("file", file.Name).
Str("mime", file.Mime).
Msg("file stream upload complete")
return nil
})
defaultTracer := pipeline.TraceFunc(func(state *pipeline.State) error {
proclogger := logger.With().
Str("image", state.Pipeline.Step.Image).
Str("stage", state.Pipeline.Step.Alias).
Int("exit_code", state.Process.ExitCode).
Bool("exited", state.Process.Exited).
Logger()
procState := rpc.State{
Proc: state.Pipeline.Step.Alias,
Exited: state.Process.Exited,
ExitCode: state.Process.ExitCode,
Started: time.Now().Unix(), // TODO do not do this
Finished: time.Now().Unix(),
}
defer func() {
proclogger.Debug().
Msg("update step status")
if uerr := r.client.Update(ctxmeta, work.ID, procState); uerr != nil {
proclogger.Debug().
Err(uerr).
Msg("update step status error")
}
proclogger.Debug().
Msg("update step status complete")
}()
if state.Process.Exited {
return nil
}
if state.Pipeline.Step.Environment == nil {
state.Pipeline.Step.Environment = map[string]string{}
}
state.Pipeline.Step.Environment["DRONE_MACHINE"] = r.hostname
state.Pipeline.Step.Environment["CI_BUILD_STATUS"] = "success"
state.Pipeline.Step.Environment["CI_BUILD_STARTED"] = strconv.FormatInt(state.Pipeline.Time, 10)
state.Pipeline.Step.Environment["CI_BUILD_FINISHED"] = strconv.FormatInt(time.Now().Unix(), 10)
state.Pipeline.Step.Environment["DRONE_BUILD_STATUS"] = "success"
state.Pipeline.Step.Environment["DRONE_BUILD_STARTED"] = strconv.FormatInt(state.Pipeline.Time, 10)
state.Pipeline.Step.Environment["DRONE_BUILD_FINISHED"] = strconv.FormatInt(time.Now().Unix(), 10)
state.Pipeline.Step.Environment["CI_JOB_STATUS"] = "success"
state.Pipeline.Step.Environment["CI_JOB_STARTED"] = strconv.FormatInt(state.Pipeline.Time, 10)
state.Pipeline.Step.Environment["CI_JOB_FINISHED"] = strconv.FormatInt(time.Now().Unix(), 10)
state.Pipeline.Step.Environment["DRONE_JOB_STATUS"] = "success"
state.Pipeline.Step.Environment["DRONE_JOB_STARTED"] = strconv.FormatInt(state.Pipeline.Time, 10)
state.Pipeline.Step.Environment["DRONE_JOB_FINISHED"] = strconv.FormatInt(time.Now().Unix(), 10)
if state.Pipeline.Error != nil {
state.Pipeline.Step.Environment["CI_BUILD_STATUS"] = "failure"
state.Pipeline.Step.Environment["CI_JOB_STATUS"] = "failure"
state.Pipeline.Step.Environment["DRONE_BUILD_STATUS"] = "failure"
state.Pipeline.Step.Environment["DRONE_JOB_STATUS"] = "failure"
}
return nil
})
err = pipeline.New(work.Config,
pipeline.WithContext(ctx),
pipeline.WithLogger(defaultLogger),
pipeline.WithTracer(defaultTracer),
pipeline.WithEngine(engine),
).Run()
state.Finished = time.Now().Unix()
state.Exited = true
if err != nil {
switch xerr := err.(type) {
case *pipeline.ExitError:
state.ExitCode = xerr.Code
default:
state.ExitCode = 1
state.Error = err.Error()
}
if cancelled.IsSet() {
state.ExitCode = 137
}
}
logger.Debug().
Str("error", state.Error).
Int("exit_code", state.ExitCode).
Msg("pipeline complete")
logger.Debug().
Msg("uploading logs")
uploads.Wait()
logger.Debug().
Msg("uploading logs complete")
logger.Debug().
Str("error", state.Error).
Int("exit_code", state.ExitCode).
Msg("updating pipeline status")
err = r.client.Done(ctxmeta, work.ID, state)
if err != nil {
logger.Error().Err(err).
Msg("updating pipeline status failed")
} else {
logger.Debug().
Msg("updating pipeline status complete")
}
return nil
}
type credentials struct {
username string
password string
@ -472,13 +148,3 @@ func (c *credentials) GetRequestMetadata(oldcontext.Context, ...string) (map[str
func (c *credentials) RequireTransportSecurity() bool {
return false
}
// extract repository name from the configuration
func extractRepositoryName(config *backend.Config) string {
return config.Stages[0].Steps[0].Environment["DRONE_REPO"]
}
// extract build number from the configuration
func extractBuildNumber(config *backend.Config) string {
return config.Stages[0].Steps[0].Environment["DRONE_BUILD_NUMBER"]
}

67
cmd/drone-agent/health.go
View file

@ -17,10 +17,7 @@ package main
import (
"encoding/json"
"fmt"
"io"
"net/http"
"sync"
"time"
"github.com/laszlocph/drone-oss-08/version"
"github.com/urfave/cli"
@ -60,7 +57,7 @@ func handleStats(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(500)
}
w.Header().Add("Content-Type", "text/json")
counter.writeTo(w)
counter.WriteTo(w)
}
type versionResp struct {
@ -68,68 +65,6 @@ type versionResp struct {
Source string `json:"source"`
}
// default statistics counter
var counter = &state{
Metadata: map[string]info{},
}
type state struct {
sync.Mutex `json:"-"`
Polling int `json:"polling_count"`
Running int `json:"running_count"`
Metadata map[string]info `json:"running"`
}
type info struct {
ID string `json:"id"`
Repo string `json:"repository"`
Build string `json:"build_number"`
Started time.Time `json:"build_started"`
Timeout time.Duration `json:"build_timeout"`
}
func (s *state) Add(id string, timeout time.Duration, repo, build string) {
s.Lock()
s.Polling--
s.Running++
s.Metadata[id] = info{
ID: id,
Repo: repo,
Build: build,
Timeout: timeout,
Started: time.Now().UTC(),
}
s.Unlock()
}
func (s *state) Done(id string) {
s.Lock()
s.Polling++
s.Running--
delete(s.Metadata, id)
s.Unlock()
}
func (s *state) Healthy() bool {
s.Lock()
defer s.Unlock()
now := time.Now()
buf := time.Hour // 1 hour buffer
for _, item := range s.Metadata {
if now.After(item.Started.Add(item.Timeout).Add(buf)) {
return false
}
}
return true
}
func (s *state) writeTo(w io.Writer) (int, error) {
s.Lock()
out, _ := json.Marshal(s)
s.Unlock()
return w.Write(out)
}
// handles pinging the endpoint and returns an error if the
// agent is in an unhealthy state.
func pinger(c *cli.Context) error {