agola/internal/services/runservice/runservice.go
Simone Gotti 1e34dca95d runservice: split and simplify scheduler and executor naming
Also if they are logically part of the runservice the names runserviceExecutor
and runserviceScheduler are long and quite confusing for an external user

Simplify them separating both the code parts and updating the names:

runserviceScheduler -> runservice
runserviceExecutor -> executor
2019-05-07 23:56:10 +02:00

271 lines
8.5 KiB
Go

// Copyright 2019 Sorint.lab
//
// 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 runservice
import (
"context"
"crypto/tls"
"net/http"
"path/filepath"
"time"
scommon "github.com/sorintlab/agola/internal/common"
"github.com/sorintlab/agola/internal/datamanager"
"github.com/sorintlab/agola/internal/etcd"
"github.com/sorintlab/agola/internal/objectstorage"
"github.com/sorintlab/agola/internal/services/config"
"github.com/sorintlab/agola/internal/services/runservice/action"
"github.com/sorintlab/agola/internal/services/runservice/api"
"github.com/sorintlab/agola/internal/services/runservice/common"
"github.com/sorintlab/agola/internal/services/runservice/readdb"
"github.com/sorintlab/agola/internal/services/runservice/types"
"github.com/sorintlab/agola/internal/util"
ghandlers "github.com/gorilla/handlers"
"github.com/gorilla/mux"
etcdclientv3 "go.etcd.io/etcd/clientv3"
"go.uber.org/zap/zapcore"
)
// etcdPingerLoop periodically updates a key.
// This is used by watchers to inform the client of the current revision
// this is needed since if other users are updating other unwatched keys on
// etcd we won't be notified, not updating the known revisions
// TODO(sgotti) use upcoming etcd 3.4 watch RequestProgress???
func (s *Runservice) etcdPingerLoop(ctx context.Context) {
for {
if err := s.etcdPinger(ctx); err != nil {
log.Errorf("err: %+v", err)
}
select {
case <-ctx.Done():
return
default:
}
time.Sleep(1 * time.Second)
}
}
func (s *Runservice) etcdPinger(ctx context.Context) error {
if _, err := s.e.Put(ctx, common.EtcdPingKey, []byte{}, nil); err != nil {
return err
}
return nil
}
type Runservice struct {
c *config.Runservice
e *etcd.Store
ost *objectstorage.ObjStorage
dm *datamanager.DataManager
readDB *readdb.ReadDB
ah *action.ActionHandler
}
func NewRunservice(ctx context.Context, c *config.Runservice) (*Runservice, error) {
if c.Debug {
level.SetLevel(zapcore.DebugLevel)
}
ost, err := scommon.NewObjectStorage(&c.ObjectStorage)
if err != nil {
return nil, err
}
e, err := scommon.NewEtcd(&c.Etcd, logger, "runservice")
if err != nil {
return nil, err
}
s := &Runservice{
c: c,
e: e,
ost: ost,
}
dmConf := &datamanager.DataManagerConfig{
E: e,
OST: ost,
DataTypes: []string{
string(common.DataTypeRun),
string(common.DataTypeRunConfig),
string(common.DataTypeRunCounter),
},
}
dm, err := datamanager.NewDataManager(ctx, logger, dmConf)
if err != nil {
return nil, err
}
s.dm = dm
readDB, err := readdb.NewReadDB(ctx, logger, filepath.Join(c.DataDir, "readdb"), e, ost, dm)
if err != nil {
return nil, err
}
s.readDB = readDB
ah := action.NewActionHandler(logger, e, readDB, ost, dm)
s.ah = ah
return s, nil
}
func (s *Runservice) InitEtcd(ctx context.Context) error {
// Create changegroup min revision if it doesn't exists
cmp := []etcdclientv3.Cmp{}
then := []etcdclientv3.Op{}
cmp = append(cmp, etcdclientv3.Compare(etcdclientv3.CreateRevision(common.EtcdChangeGroupMinRevisionKey), "=", 0))
then = append(then, etcdclientv3.OpPut(common.EtcdChangeGroupMinRevisionKey, ""))
txn := s.e.Client().Txn(ctx).If(cmp...).Then(then...)
if _, err := txn.Commit(); err != nil {
return etcd.FromEtcdError(err)
}
return nil
}
func (s *Runservice) Run(ctx context.Context) error {
errCh := make(chan error)
dmReadyCh := make(chan struct{})
go func() { errCh <- s.dm.Run(ctx, dmReadyCh) }()
// wait for dm to be ready
<-dmReadyCh
for {
err := s.InitEtcd(ctx)
if err == nil {
break
}
log.Errorf("failed to initialize etcd: %+v", err)
time.Sleep(1 * time.Second)
}
go s.readDB.Run(ctx)
ch := make(chan *types.ExecutorTask)
// noop coors handler
corsHandler := func(h http.Handler) http.Handler {
return h
}
corsAllowedMethodsOptions := ghandlers.AllowedMethods([]string{"GET", "HEAD", "POST", "PUT", "DELETE"})
corsAllowedHeadersOptions := ghandlers.AllowedHeaders([]string{"Accept", "Accept-Encoding", "Authorization", "Content-Length", "Content-Type", "X-CSRF-Token", "Authorization"})
corsAllowedOriginsOptions := ghandlers.AllowedOrigins([]string{"*"})
corsHandler = ghandlers.CORS(corsAllowedMethodsOptions, corsAllowedHeadersOptions, corsAllowedOriginsOptions)
// executor dedicated api, only calls from executor should happen on these handlers
executorStatusHandler := api.NewExecutorStatusHandler(logger, s.e, s.ah)
executorTaskStatusHandler := api.NewExecutorTaskStatusHandler(s.e, ch)
executorTaskHandler := api.NewExecutorTaskHandler(s.e)
executorTasksHandler := api.NewExecutorTasksHandler(s.e)
archivesHandler := api.NewArchivesHandler(logger, s.ost)
cacheHandler := api.NewCacheHandler(logger, s.ost)
cacheCreateHandler := api.NewCacheCreateHandler(logger, s.ost)
// api from clients
executorDeleteHandler := api.NewExecutorDeleteHandler(logger, s.ah)
logsHandler := api.NewLogsHandler(logger, s.e, s.ost, s.dm)
runHandler := api.NewRunHandler(logger, s.e, s.dm, s.readDB)
runTaskActionsHandler := api.NewRunTaskActionsHandler(logger, s.ah)
runsHandler := api.NewRunsHandler(logger, s.readDB)
runActionsHandler := api.NewRunActionsHandler(logger, s.ah)
runCreateHandler := api.NewRunCreateHandler(logger, s.ah)
changeGroupsUpdateTokensHandler := api.NewChangeGroupsUpdateTokensHandler(logger, s.readDB)
router := mux.NewRouter()
apirouter := router.PathPrefix("/api/v1alpha").Subrouter()
// don't return 404 on a call to an undefined handler but 400 to distinguish between a non existent resource and a wrong method
apirouter.NotFoundHandler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { w.WriteHeader(http.StatusBadRequest) })
apirouter.Handle("/executor/{executorid}", executorStatusHandler).Methods("POST")
apirouter.Handle("/executor/{executorid}", executorDeleteHandler).Methods("DELETE")
apirouter.Handle("/executor/{executorid}/tasks", executorTasksHandler).Methods("GET")
apirouter.Handle("/executor/{executorid}/tasks/{taskid}", executorTaskHandler).Methods("GET")
apirouter.Handle("/executor/{executorid}/tasks/{taskid}", executorTaskStatusHandler).Methods("POST")
apirouter.Handle("/executor/archives", archivesHandler).Methods("GET")
apirouter.Handle("/executor/caches/{key}", cacheHandler).Methods("HEAD")
apirouter.Handle("/executor/caches/{key}", cacheHandler).Methods("GET")
apirouter.Handle("/executor/caches/{key}", cacheCreateHandler).Methods("POST")
apirouter.Handle("/logs", logsHandler).Methods("GET")
apirouter.Handle("/runs/{runid}", runHandler).Methods("GET")
apirouter.Handle("/runs/{runid}/actions", runActionsHandler).Methods("PUT")
apirouter.Handle("/runs/{runid}/tasks/{taskid}/actions", runTaskActionsHandler).Methods("PUT")
apirouter.Handle("/runs", runsHandler).Methods("GET")
apirouter.Handle("/runs", runCreateHandler).Methods("POST")
apirouter.Handle("/changegroups", changeGroupsUpdateTokensHandler).Methods("GET")
mainrouter := mux.NewRouter()
mainrouter.PathPrefix("/").Handler(corsHandler(router))
// Return a bad request when it doesn't match any route
mainrouter.NotFoundHandler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { w.WriteHeader(http.StatusBadRequest) })
go s.executorTasksCleanerLoop(ctx)
go s.runsSchedulerLoop(ctx)
go s.runTasksUpdaterLoop(ctx)
go s.fetcherLoop(ctx)
go s.finishedRunsArchiverLoop(ctx)
go s.compactChangeGroupsLoop(ctx)
go s.cacheCleanerLoop(ctx, s.c.RunCacheExpireInterval)
go s.executorTaskUpdateHandler(ctx, ch)
go s.etcdPingerLoop(ctx)
var tlsConfig *tls.Config
if s.c.Web.TLS {
var err error
tlsConfig, err = util.NewTLSConfig(s.c.Web.TLSCertFile, s.c.Web.TLSKeyFile, "", false)
if err != nil {
log.Errorf("err: %+v")
return err
}
}
httpServer := http.Server{
Addr: s.c.Web.ListenAddress,
Handler: mainrouter,
TLSConfig: tlsConfig,
}
lerrCh := make(chan error)
go func() {
lerrCh <- httpServer.ListenAndServe()
}()
select {
case <-ctx.Done():
log.Infof("runservice scheduler exiting")
httpServer.Close()
return nil
case err := <-lerrCh:
log.Errorf("http server listen error: %v", err)
return err
case err := <-errCh:
log.Errorf("error: %+v", err)
return err
}
}