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woodpecker/agent/runner.go
Anbraten c1a8884d62
Add backend selection for agent (#463)
- add backend selection option
- by default it will auto-detect a backend
2021-11-26 03:34:48 +01:00

347 lines
8.8 KiB
Go

// Copyright 2018 Drone.IO Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package agent
import (
"context"
"encoding/json"
"io"
"io/ioutil"
"strconv"
"sync"
"time"
"github.com/rs/zerolog/log"
"github.com/tevino/abool"
"google.golang.org/grpc/metadata"
"github.com/woodpecker-ci/woodpecker/pipeline"
backend "github.com/woodpecker-ci/woodpecker/pipeline/backend/types"
"github.com/woodpecker-ci/woodpecker/pipeline/multipart"
"github.com/woodpecker-ci/woodpecker/pipeline/rpc"
)
// TODO: Implement log streaming.
// Until now we need to limit the size of the logs and files that we upload.
// The maximum grpc payload size is 4194304. So 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
counter *State
engine *backend.Engine
}
func NewRunner(workEngine rpc.Peer, f rpc.Filter, h string, state *State, backend *backend.Engine) Runner {
return Runner{
client: workEngine,
filter: f,
hostname: h,
counter: state,
engine: backend,
}
}
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
}
r.counter.Add(
work.ID,
timeout,
extractRepositoryName(work.Config), // hack
extractBuildNumber(work.Config), // hack
)
defer r.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")
ctx, cancel := context.WithTimeout(ctxmeta, timeout)
defer cancel()
canceled := abool.New()
go func() {
logger.Debug().Msg("listen for cancel signal")
if werr := r.client.Wait(ctx, work.ID); werr != nil {
canceled.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")
if err := r.client.Extend(ctx, work.ID); err != nil {
log.Error().Err(err).Msg("extending pipeline deadline failed")
}
}
}
}()
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...)
if _, err := io.Copy(logStream, limitedPart); err != nil {
log.Error().Err(err).Msg("copy limited logStream part")
}
loglogger.Debug().Msg("log stream copied")
data, err := json.Marshal(logStream.Lines())
if err != nil {
loglogger.Err(err).Msg("could not marshal logstream")
}
file := &rpc.File{
Mime: "application/json+logs",
Proc: proc.Alias,
Name: "logs.json",
Data: data,
Size: len(data),
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")
} else {
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)
data, err = ioutil.ReadAll(limitedPart)
if err != nil {
loglogger.Err(err).Msg("could not read limited part")
}
file = &rpc.File{
Mime: part.Header().Get("Content-Type"),
Proc: proc.Alias,
Name: part.FileName(),
Data: data,
Size: len(data),
Time: time.Now().Unix(),
Meta: make(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{}
}
// TODO: find better way to update this state
state.Pipeline.Step.Environment["CI_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["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)
if state.Pipeline.Error != nil {
state.Pipeline.Step.Environment["CI_BUILD_STATUS"] = "failure"
state.Pipeline.Step.Environment["CI_JOB_STATUS"] = "failure"
}
return nil
})
err = pipeline.New(work.Config,
pipeline.WithContext(ctx),
pipeline.WithLogger(defaultLogger),
pipeline.WithTracer(defaultTracer),
pipeline.WithEngine(*r.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 canceled.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
}
// extract repository name from the configuration
func extractRepositoryName(config *backend.Config) string {
return config.Stages[0].Steps[0].Environment["CI_REPO"]
}
// extract build number from the configuration
func extractBuildNumber(config *backend.Config) string {
return config.Stages[0].Steps[0].Environment["CI_BUILD_NUMBER"]
}