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sisyphus/database.go

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package main
import (
"log"
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"github.com/boltdb/bolt"
)
// openDB creates and opens a new database and its respective buckets (if required)
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func openDB(maildir string) (db *bolt.DB, err error) {
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log.Println("loading database")
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// Open the sisyphus.db data file in your current directory.
// It will be created if it doesn't exist.
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db, err = bolt.Open(maildir+"/sisyphus.db", 0600, nil)
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if err != nil {
return db, err
}
// Create DB bucket for the map of processed e-mail IDs
err = db.Update(func(tx *bolt.Tx) error {
_, err := tx.CreateBucketIfNotExists([]byte("Processed"))
if err != nil {
return err
}
return nil
})
if err != nil {
return db, err
}
// Create DB bucket for Mails inside bucket Processed
err = db.Update(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte("Processed"))
_, err := b.CreateBucketIfNotExists([]byte("Mails"))
if err != nil {
return err
}
return nil
})
if err != nil {
return db, err
}
// Create DB bucket for Counters inside bucket Processed
err = db.Update(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte("Processed"))
_, err := b.CreateBucketIfNotExists([]byte("Counters"))
if err != nil {
return err
}
return nil
})
if err != nil {
return db, err
}
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// Create DB bucket for word lists
err = db.Update(func(tx *bolt.Tx) error {
_, err := tx.CreateBucketIfNotExists([]byte("Wordlists"))
if err != nil {
return err
}
return nil
})
if err != nil {
return db, err
}
// Create DB bucket for Junk inside bucket Wordlists
err = db.Update(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte("Wordlists"))
_, err := b.CreateBucketIfNotExists([]byte("Junk"))
if err != nil {
return err
}
return nil
})
if err != nil {
return db, err
}
// Create DB bucket for Good inside bucket Wordlists
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err = db.Update(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte("Wordlists"))
_, err := b.CreateBucketIfNotExists([]byte("Good"))
if err != nil {
return err
}
return nil
})
log.Println("database loaded")
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return db, err
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}