133 lines
3.8 KiB
Go
133 lines
3.8 KiB
Go
// Fast Paste Bin - uberfast and easy-to-use pastebin.
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//
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// Copyright (c) 2018, Stanislav N. aka pztrn and Fast Paste Bin
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// developers.
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject
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// to the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
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// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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package database
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import (
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"database/sql"
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"time"
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_ "github.com/go-sql-driver/mysql"
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"go.dev.pztrn.name/fastpastebin/internal/database/dialects/flatfiles"
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dialectinterface "go.dev.pztrn.name/fastpastebin/internal/database/dialects/interface"
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"go.dev.pztrn.name/fastpastebin/internal/database/dialects/mysql"
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"go.dev.pztrn.name/fastpastebin/internal/database/dialects/postgresql"
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"go.dev.pztrn.name/fastpastebin/internal/structs"
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)
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// Database represents control structure for database connection.
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type Database struct {
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db dialectinterface.Interface
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}
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// Database cleanup function. Executes once per hour, hardcoded for now and is
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// a subject of change in future.
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func (db *Database) cleanup() {
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for {
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c.Logger.Info().Msg("Starting pastes cleanup procedure...")
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pages := db.db.GetPastesPages()
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var pasteIDsToRemove []int
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for i := 0; i < pages; i++ {
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pastes, err := db.db.GetPagedPastes(i)
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if err != nil {
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c.Logger.Error().Err(err).Int("page", i).Msg("Failed to perform database cleanup")
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}
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for _, paste := range pastes {
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if paste.IsExpired() {
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pasteIDsToRemove = append(pasteIDsToRemove, paste.ID)
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}
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}
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}
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for _, pasteID := range pasteIDsToRemove {
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err := db.DeletePaste(pasteID)
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if err != nil {
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c.Logger.Error().Err(err).Int("paste", pasteID).Msg("Failed to delete paste!")
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}
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}
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c.Logger.Info().Msg("Pastes cleanup done.")
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time.Sleep(time.Hour)
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}
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}
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func (db *Database) DeletePaste(pasteID int) error {
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return db.db.DeletePaste(pasteID)
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}
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func (db *Database) GetDatabaseConnection() *sql.DB {
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if db.db != nil {
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return db.db.GetDatabaseConnection()
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}
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return nil
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}
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func (db *Database) GetPaste(pasteID int) (*structs.Paste, error) {
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return db.db.GetPaste(pasteID)
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}
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func (db *Database) GetPagedPastes(page int) ([]structs.Paste, error) {
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return db.db.GetPagedPastes(page)
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}
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func (db *Database) GetPastesPages() int {
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return db.db.GetPastesPages()
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}
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// Initialize initializes connection to database.
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func (db *Database) Initialize() {
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c.Logger.Info().Msg("Initializing database connection...")
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if c.Config.Database.Type == "mysql" {
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mysql.New(c)
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} else if c.Config.Database.Type == flatfiles.FlatFileDialect {
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flatfiles.New(c)
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} else if c.Config.Database.Type == "postgresql" {
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postgresql.New(c)
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} else {
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c.Logger.Fatal().Str("type", c.Config.Database.Type).Msg("Unknown database type")
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}
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go db.cleanup()
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}
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func (db *Database) RegisterDialect(di dialectinterface.Interface) {
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db.db = di
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db.db.Initialize()
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}
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func (db *Database) SavePaste(p *structs.Paste) (int64, error) {
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return db.db.SavePaste(p)
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}
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func (db *Database) Shutdown() {
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db.db.Shutdown()
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}
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