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app.go
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app.go
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package app
import (
"net/http"
"strings"
"github.com/kadisoka/foundation/pkg/app"
"github.com/kadisoka/foundation/pkg/errors"
"github.com/kadisoka/foundation/pkg/webui"
"github.com/rez-go/stev"
"github.com/kadisoka/iam/pkg/iam/logging"
"github.com/kadisoka/iam/pkg/iamserver"
"github.com/kadisoka/iam/pkg/iamserver/grpc"
"github.com/kadisoka/iam/pkg/iamserver/rest"
iamwebui "github.com/kadisoka/iam/pkg/iamserver/webui"
)
var log = logging.NewPkgLogger()
func NewByEnv(envPrefix string, defaultConfig *Config) (*App, error) {
cfg := defaultConfig
if cfg == nil {
cfg = &Config{}
}
err := stev.LoadEnv(envPrefix, cfg)
if err != nil {
log.Fatal().Err(err).Msg("App config loading")
}
resolveConfig(cfg)
log.Info().Msg("Initializing server app...")
srvApp, err := newWithoutServices(*cfg)
if err != nil {
log.Fatal().Err(err).Msg("App initialization")
}
err = srvApp.initServers(*cfg)
if err != nil {
return nil, err
}
return srvApp, nil
}
func NewWithCombinedHTTPServers(cfg Config, mux *http.ServeMux) (*App, error) {
resolveConfig(&cfg)
srvApp, err := newWithoutServices(cfg)
if err != nil {
return nil, errors.Wrap("app initialization", err)
}
iamServerCore := srvApp.Core
if cfg.RESTEnabled {
log.Info().Msg("Initializing REST server...")
restServer, err := rest.NewServer(
*cfg.REST,
srvApp.AppInfo(),
iamServerCore,
&cfg.WebUI.URLs)
if err != nil {
return nil, errors.Wrap("REST server initialization", err)
}
mux.Handle(cfg.REST.ServePath, restServer)
}
if cfg.WebUIEnabled {
log.Info().Msg("Initializing web UI server...")
webUIServer, err := setUpWebUIServer(srvApp, cfg)
if err != nil {
return nil, errors.Wrap("web UI server initialization", err)
}
mux.Handle(cfg.WebUI.Server.ServePath, webUIServer)
}
return srvApp, nil
}
func setUpWebUIServer(srvApp *App, cfg Config) (*webui.Server, error) {
webUICfg := cfg.WebUI.Server
templateData := map[string]interface{}{
"AppInfo": srvApp.AppInfo(),
"AppName": srvApp.AppInfo().Name,
}
restAPIURLReplacer := &webui.StringReplacer{
Old: "http://localhost:11121/rest/v1",
New: strings.TrimRight(cfg.RESTCanonicalBaseURL, "/"),
}
webUIServeURLReplacer := &webui.StringReplacer{
Old: "/kadisoka-iam-webui-base-path/",
New: webUICfg.ServePath,
}
homeURLReplacer := &webui.StringReplacer{
Old: "http://localhost:3000/",
New: "/",
}
webUICfg.FileProcessors = map[string][]webui.FileProcessor{
"*.html": {&webui.HTMLRenderer{
Config: webui.HTMLRendererConfig{
TemplateDelimBegin: "{:[",
TemplateDelimEnd: "]:}",
},
TemplateData: templateData,
}, restAPIURLReplacer, webUIServeURLReplacer, homeURLReplacer},
"*.js": {&webui.JSRenderer{
Config: webui.JSRendererConfig{
TemplateDelimBegin: "{:[",
TemplateDelimEnd: "]:}",
},
TemplateData: templateData,
}, restAPIURLReplacer, webUIServeURLReplacer, homeURLReplacer},
}
webUIServer, err := webui.NewServer(
webUICfg,
templateData)
if err != nil {
return nil, errors.Wrap("web UI instantiation", err)
}
return webUIServer, nil
}
func newWithoutServices(appCfg Config) (*App, error) {
appCore, err := app.Init(appCfg.AppInfo)
if err != nil {
return nil, errors.Wrap("app initialization", err)
}
srvCore, err := iamserver.NewCoreByConfig(appCfg.Core, appCore)
if err != nil {
return nil, errors.Wrap("core initialization", err)
}
return &App{
App: appCore,
Core: srvCore,
}, nil
}
func resolveConfig(cfg *Config) {
if cfg.WebUI == nil {
cfg.WebUI = &iamwebui.ServerConfig{
Server: webui.ServerConfig{},
}
}
if cfg.WebUI.Server.ServePath == "" {
cfg.WebUI.Server.ServePath = cfg.HTTPBasePath
}
cfg.WebUI.Server.ServePath = strings.TrimRight(cfg.WebUI.Server.ServePath, "/") + "/"
if cfg.WebUI.Server.FilesDir == "" {
cfg.WebUI.Server.FilesDir = "resources/iam-webui"
}
if cfg.WebUI.URLs.SignIn == "" {
cfg.WebUI.URLs.SignIn = cfg.WebUI.Server.ServePath + "signin"
}
if cfg.REST == nil {
cfg.REST = &rest.ServerConfig{}
}
if cfg.REST.ServePath == "" {
cfg.REST.ServePath = strings.TrimRight(cfg.HTTPBasePath, "/") + "/rest/"
}
if cfg.RESTCanonicalBaseURL == "" {
cfg.RESTCanonicalBaseURL = cfg.REST.ServePath + rest.ServerLatestVersionString + "/"
}
if cfg.Core.EAV.ResourcesDir == "" {
cfg.Core.EAV.ResourcesDir = "resources/iam-pnv10n-resources"
}
}
type App struct {
app.App
Core *iamserver.Core
}
func (srvApp *App) initServers(cfg Config) error {
iamServerCore := srvApp.Core
if cfg.RESTEnabled {
log.Info().Msg("Initializing REST server...")
restServer, err := rest.NewServer(
*cfg.REST,
srvApp.AppInfo(),
iamServerCore,
&cfg.WebUI.URLs)
if err != nil {
return errors.Wrap("REST server initialization", err)
}
srvApp.AddServer(restServer)
}
if cfg.WebUIEnabled {
log.Info().Msg("Initializing web UI server...")
webUIServer, err := setUpWebUIServer(srvApp, cfg)
if err != nil {
return errors.Wrap("web UI server initialization", err)
}
srvApp.AddServer(webUIServer)
}
if cfg.GRPCEnabled {
log.Info().Msg("Initializing gRPC Server...")
grpcServer, err := grpc.NewServer(
*cfg.GRPC,
iamServerCore)
if err != nil {
return errors.Wrap("gRPC server initialization", err)
}
srvApp.AddServer(grpcServer)
}
return nil
}
func ConfigSkeleton() Config {
return Config{
Core: iamserver.CoreConfigSkeleton(),
}
}
func ConfigSkeletonPtr() *Config {
cfg := ConfigSkeleton()
return &cfg
}