super-graph/serv/serv.go

194 lines
3.9 KiB
Go

package serv
import (
"context"
"fmt"
"net/http"
"os"
"os/signal"
"strings"
"time"
rice "github.com/GeertJohan/go.rice"
"github.com/dosco/super-graph/psql"
"github.com/dosco/super-graph/qcode"
"github.com/gobuffalo/flect"
)
func initCompilers(c *config) (*qcode.Compiler, *psql.Compiler, error) {
schema, err := psql.NewDBSchema(db, c.getAliasMap())
if err != nil {
return nil, nil, err
}
conf := qcode.Config{
DefaultFilter: c.DB.Defaults.Filter,
FilterMap: qcode.Filters{
All: make(map[string][]string, len(c.Tables)),
Query: make(map[string][]string, len(c.Tables)),
Insert: make(map[string][]string, len(c.Tables)),
Update: make(map[string][]string, len(c.Tables)),
Delete: make(map[string][]string, len(c.Tables)),
},
Blocklist: c.DB.Defaults.Blocklist,
KeepArgs: false,
}
for i := range c.Tables {
t := c.Tables[i]
singular := flect.Singularize(t.Name)
plural := flect.Pluralize(t.Name)
setFilter := func(fm map[string][]string, fil []string) {
switch {
case len(fil) == 0:
return
case fil[0] == "none" || len(fil[0]) == 0:
fm[singular] = []string{}
fm[plural] = []string{}
default:
fm[singular] = t.Filter
fm[plural] = t.Filter
}
}
setFilter(conf.FilterMap.All, t.Filter)
setFilter(conf.FilterMap.Query, t.FilterQuery)
setFilter(conf.FilterMap.Insert, t.FilterInsert)
setFilter(conf.FilterMap.Update, t.FilterUpdate)
setFilter(conf.FilterMap.Delete, t.FilterDelete)
}
qc, err := qcode.NewCompiler(conf)
if err != nil {
return nil, nil, err
}
pc := psql.NewCompiler(psql.Config{
Schema: schema,
Vars: c.getVariables(),
})
return qc, pc, nil
}
func initWatcher(cpath string) {
if conf.WatchAndReload == false {
return
}
var d dir
if len(cpath) == 0 || cpath == "./" {
d = Dir("./config", ReExec)
} else {
d = Dir(cpath, ReExec)
}
go func() {
err := Do(logger.Printf, d)
if err != nil {
logger.Fatal().Err(err).Send()
}
}()
}
func startHTTP() {
hp := strings.SplitN(conf.HostPort, ":", 2)
if len(conf.Host) != 0 {
hp[0] = conf.Host
}
if len(conf.Port) != 0 {
hp[1] = conf.Port
}
hostPort := fmt.Sprintf("%s:%s", hp[0], hp[1])
srv := &http.Server{
Addr: hostPort,
Handler: routeHandler(),
ReadTimeout: 5 * time.Second,
WriteTimeout: 10 * time.Second,
MaxHeaderBytes: 1 << 20,
}
idleConnsClosed := make(chan struct{})
go func() {
sigint := make(chan os.Signal, 1)
signal.Notify(sigint, os.Interrupt)
<-sigint
if err := srv.Shutdown(context.Background()); err != nil {
logger.Error().Err(err).Msg("shutdown signal received")
}
close(idleConnsClosed)
}()
srv.RegisterOnShutdown(func() {
db.Close()
})
fmt.Printf("%s listening on %s (%s)\n", serverName, hostPort, conf.Env)
if err := srv.ListenAndServe(); err != http.ErrServerClosed {
logger.Error().Err(err).Msg("server closed")
}
<-idleConnsClosed
}
func routeHandler() http.Handler {
mux := http.NewServeMux()
mux.Handle("/api/v1/graphql", withAuth(apiv1Http))
if conf.WebUI {
mux.Handle("/", http.FileServer(rice.MustFindBox("../web/build").HTTPBox()))
}
fn := func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Server", serverName)
mux.ServeHTTP(w, r)
}
return http.HandlerFunc(fn)
}
func getConfigName() string {
if len(os.Getenv("GO_ENV")) == 0 {
return "dev"
}
ge := strings.ToLower(os.Getenv("GO_ENV"))
switch {
case strings.HasPrefix(ge, "pro"):
return "prod"
case strings.HasPrefix(ge, "sta"):
return "stage"
case strings.HasPrefix(ge, "tes"):
return "test"
case strings.HasPrefix(ge, "dev"):
return "dev"
}
return ge
}
func getAuthFailBlock(c *config) int {
switch c.AuthFailBlock {
case "always":
return authFailBlockAlways
case "per_query", "perquery", "query":
return authFailBlockPerQuery
case "never", "false":
return authFailBlockNever
}
return authFailBlockAlways
}