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entrypoint.go
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/
entrypoint.go
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package cronjob
import (
"context"
"errors"
"sync"
"github.com/robfig/cron/v3"
"github.com/scrapnode/kanthor/database"
"github.com/scrapnode/kanthor/datastore"
"github.com/scrapnode/kanthor/infrastructure"
"github.com/scrapnode/kanthor/logging"
"github.com/scrapnode/kanthor/patterns"
"github.com/scrapnode/kanthor/pkg/healthcheck"
"github.com/scrapnode/kanthor/pkg/healthcheck/background"
"github.com/scrapnode/kanthor/project"
"github.com/scrapnode/kanthor/services/recovery/config"
"github.com/scrapnode/kanthor/services/recovery/usecase"
)
func New(
conf *config.Config,
logger logging.Logger,
infra *infrastructure.Infrastructure,
db database.Database,
ds datastore.Datastore,
uc usecase.Recovery,
) patterns.Runnable {
logger = logger.With("service", "recovery", "entrypoint", "cronjob")
return &cronjob{
conf: conf,
logger: logger,
infra: infra,
db: db,
ds: ds,
uc: uc,
cron: cron.New(),
healthcheck: background.NewServer(
healthcheck.DefaultConfig("recovery.cronjob"),
logger.With("healthcheck", "background"),
),
}
}
type cronjob struct {
conf *config.Config
logger logging.Logger
infra *infrastructure.Infrastructure
db database.Database
ds datastore.Datastore
uc usecase.Recovery
cron *cron.Cron
healthcheck healthcheck.Server
mu sync.Mutex
status int
}
func (service *cronjob) Start(ctx context.Context) error {
service.mu.Lock()
defer service.mu.Unlock()
if service.status == patterns.StatusStarted {
return ErrAlreadyStarted
}
if err := service.conf.Validate(); err != nil {
return err
}
if err := service.db.Connect(ctx); err != nil {
return err
}
if err := service.ds.Connect(ctx); err != nil {
return err
}
if err := service.infra.Connect(ctx); err != nil {
return err
}
if err := service.healthcheck.Connect(ctx); err != nil {
return err
}
_, err := service.cron.AddFunc(service.conf.Cronjob.Scheduler, UseJob(service))
if err != nil {
return err
}
service.status = patterns.StatusStarted
service.logger.Info("started")
return nil
}
func (service *cronjob) Stop(ctx context.Context) error {
service.mu.Lock()
defer service.mu.Unlock()
if service.status != patterns.StatusStarted {
return ErrNotStarted
}
service.status = patterns.StatusStopped
service.logger.Info("stopped")
// wait for the cronjob is done
<-service.cron.Stop().Done()
var returning error
if err := service.healthcheck.Disconnect(ctx); err != nil {
returning = errors.Join(returning, err)
}
if err := service.infra.Disconnect(ctx); err != nil {
returning = errors.Join(returning, err)
}
if err := service.ds.Disconnect(ctx); err != nil {
returning = errors.Join(returning, err)
}
if err := service.db.Disconnect(ctx); err != nil {
returning = errors.Join(returning, err)
}
return returning
}
func (service *cronjob) Run(ctx context.Context) error {
if err := service.readiness(); err != nil {
return err
}
go func() {
err := service.healthcheck.Liveness(func() error {
if err := service.infra.Liveness(); err != nil {
return err
}
if err := service.db.Liveness(); err != nil {
return err
}
if err := service.ds.Liveness(); err != nil {
return err
}
return nil
})
if err != nil {
service.logger.Error(err)
}
}()
// in development enviroment, we want to run all jobs after the startup process
if project.IsDev() {
entries := service.cron.Entries()
for _, entry := range entries {
entry.Job.Run()
}
}
service.logger.Infow("running")
go func() {
service.cron.Run()
}()
<-ctx.Done()
return nil
}
func (service *cronjob) readiness() error {
return service.healthcheck.Readiness(func() error {
if err := service.infra.Readiness(); err != nil {
return err
}
if err := service.ds.Readiness(); err != nil {
return err
}
if err := service.db.Readiness(); err != nil {
return err
}
return nil
})
}