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server.go
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server.go
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package hitrix
import (
"context"
"fmt"
"log"
"net/http"
"os"
"os/signal"
"syscall"
"time"
"github.com/coretrix/hitrix/service"
"github.com/fatih/color"
"github.com/99designs/gqlgen/graphql"
)
type Hitrix struct {
done chan bool
exit chan int
}
func (h *Hitrix) RunServer(defaultPort uint, server graphql.ExecutableSchema, ginInitHandler GinInitHandler, gqlServerInitHandler GQLServerInitHandler) {
port := os.Getenv("PORT")
if port == "" {
port = fmt.Sprintf("%d", defaultPort)
}
srv := &http.Server{
Addr: ":" + port,
Handler: InitGin(server, ginInitHandler, gqlServerInitHandler),
}
h.preDeploy()
h.forceAlters()
go func() {
if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
panic(err)
}
h.done <- true
}()
h.await()
app := service.DI().App()
defer app.CancelContext()
if err := srv.Shutdown(app.GlobalContext); err != nil {
log.Println("Server forced to shutdown")
}
}
func (h *Hitrix) RunBackgroundProcess(callback func(b *BackgroundProcessor)) {
h.preDeploy()
h.forceAlters()
callback(&BackgroundProcessor{Server: h})
h.await()
}
func (h *Hitrix) runDynamicScrips(ctx context.Context, code string) {
scripts := service.DI().App().Scripts
if len(scripts) == 0 {
panic(fmt.Sprintf("unknown script %s", code))
}
for _, defCode := range scripts {
if defCode == code {
def, has := service.GetServiceOptional(defCode)
if !has {
panic(fmt.Sprintf("unknown script %s", code))
}
defScript := def.(Script)
defScript.Run(ctx, &exit{s: h})
return
}
}
panic(fmt.Sprintf("unknown script %s", code))
}
func (h *Hitrix) preDeploy() {
app := service.DI().App()
if app.IsInTestMode() {
return
}
preDeployFlag := app.Flags.Bool("pre-deploy")
if !preDeployFlag {
return
}
ormService, has := service.DI().OrmEngine()
if !has {
return
}
alters := ormService.GetAlters()
hasAlters := false
for _, alter := range alters {
if alter.Safe {
color.Green("%s\n\n", alter.SQL)
} else {
color.Red("%s\n\n", alter.SQL)
}
hasAlters = true
}
if hasAlters {
os.Exit(1)
}
os.Exit(0)
}
func (h *Hitrix) forceAlters() {
app := service.DI().App()
if !app.IsInLocalMode() {
return
}
forceAltersFlag := app.Flags.Bool("force-alters")
if !forceAltersFlag {
return
}
ormService, has := service.DI().OrmEngine()
if !has {
return
}
dbService := ormService.GetMysql()
alters := ormService.GetAlters()
var queries string
for _, alter := range alters {
queries += alter.SQL
}
if queries != "" {
_, def := dbService.Query(queries)
defer def()
}
altersSearch := ormService.GetRedisSearchIndexAlters()
for _, alter := range altersSearch {
alter.Execute()
}
log.Println("FORCE ALTERS executed")
}
func (h *Hitrix) await() {
termChan := make(chan os.Signal, 1)
signal.Notify(termChan, syscall.SIGINT, syscall.SIGTERM)
app := service.DI().App()
select {
case code := <-h.exit:
app.CancelContext()
os.Exit(code)
case <-h.done:
app.CancelContext()
case <-termChan:
log.Println("TERMINATING")
app.CancelContext()
time.Sleep(time.Millisecond * 300)
log.Println("TERMINATED")
}
}