bloat/main.go

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package main
import (
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"errors"
"fmt"
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"log"
"net"
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"net/http"
"os"
"path/filepath"
"strings"
"time"
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"bloat/config"
"bloat/renderer"
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"bloat/repo"
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"bloat/service"
"bloat/util"
)
var (
configFile = "/etc/bloat.conf"
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)
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func errExit(err error) {
fmt.Fprintln(os.Stderr, err.Error())
os.Exit(1)
}
func setupHttp() {
tr := http.DefaultTransport.(*http.Transport)
tr.MaxIdleConnsPerHost = 30
tr.MaxIdleConns = 300
tr.ForceAttemptHTTP2 = false
tr.DialContext = (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 3 * time.Minute,
DualStack: true,
}).DialContext
client := http.DefaultClient
client.Transport = tr
}
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func main() {
opts, _, err := util.Getopts(os.Args, "f:")
if err != nil {
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errExit(err)
}
for _, opt := range opts {
switch opt.Option {
case 'f':
configFile = opt.Value
}
}
config, err := config.ParseFile(configFile)
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if err != nil {
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errExit(err)
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}
if !config.IsValid() {
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errExit(errors.New("invalid config"))
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}
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templatesGlobPattern := filepath.Join(config.TemplatesPath, "*")
renderer, err := renderer.NewRenderer(templatesGlobPattern)
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if err != nil {
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errExit(err)
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}
err = os.Mkdir(config.DatabasePath, 0755)
if err != nil && !os.IsExist(err) {
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errExit(err)
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}
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sessionDBPath := filepath.Join(config.DatabasePath, "session")
sessionDB, err := util.NewDatabse(sessionDBPath)
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if err != nil {
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errExit(err)
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}
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appDBPath := filepath.Join(config.DatabasePath, "app")
appDB, err := util.NewDatabse(appDBPath)
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if err != nil {
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errExit(err)
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}
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sessionRepo := repo.NewSessionRepo(sessionDB)
appRepo := repo.NewAppRepo(appDB)
customCSS := config.CustomCSS
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if len(customCSS) > 0 && !strings.HasPrefix(customCSS, "http://") &&
!strings.HasPrefix(customCSS, "https://") {
customCSS = "/static/" + customCSS
}
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var logger *log.Logger
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if len(config.LogFile) < 1 {
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logger = log.New(os.Stdout, "", log.LstdFlags)
} else {
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lf, err := os.OpenFile(config.LogFile,
os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0644)
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if err != nil {
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errExit(err)
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}
defer lf.Close()
logger = log.New(lf, "", log.LstdFlags)
}
setupHttp()
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s := service.NewService(config.ClientName, config.ClientScope,
config.ClientWebsite, customCSS, config.PostFormats, renderer,
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sessionRepo, appRepo, config.SingleInstance)
handler := service.NewHandler(s, logger, config.StaticDirectory)
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logger.Println("listening on", config.ListenAddress)
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err = http.ListenAndServe(config.ListenAddress, handler)
if err != nil {
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errExit(err)
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}
}