GoBlog/database.go

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package main
import (
"database/sql"
"sync"
_ "github.com/mattn/go-sqlite3"
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)
var appDb *sql.DB
var appDbWriteMutex = &sync.Mutex{}
func initDatabase() (err error) {
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appDb, err = sql.Open("sqlite3", appConfig.Db.File+"?cache=shared&mode=rwc&_journal_mode=WAL")
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if err != nil {
return err
}
return migrateDb()
}
func startWritingToDb() {
appDbWriteMutex.Lock()
}
func finishWritingToDb() {
appDbWriteMutex.Unlock()
}
func closeDb() error {
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vacuumDb()
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return appDb.Close()
}
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func vacuumDb() {
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startWritingToDb()
defer finishWritingToDb()
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_, _ = appDb.Exec("VACUUM;")
}