Database dialects, proper database shutdown, pagination in configuration.

Added possibility to use different database (storage) backends. Currently
supported: flatfiles and mysql. Fixes #2.

Added database shutdown call. This call will properly shutdown database
connections (in case of RDBMS) or flush pastes index cache on disk (in
case of flatfiles).

De-hardcoded pagination count. Fixes #12.

README.md

@@ -11,6 +11,7 @@ whistles, no websockets and even NO JAVASCRIPT!
 * Syntax highlighting.
 * Pastes expiration.
 * Passwords for pastes.
+* Multiple storage backends. Currently: ``flatfiles`` and ``mysql``.
 
 # Caveats.
 

config/database.go

@@ -26,6 +26,8 @@ package config
 
 // ConfigDatabase describes database configuration.
 type ConfigDatabase struct {
+	Type     string `yaml:"type"`
+	Path     string `yaml:"path"`
 	Address  string `yaml:"address"`
 	Port     string `yaml:"port"`
 	Username string `yaml:"username"`

config/pastes.go

@@ -0,0 +1,30 @@
+// Fast Paste Bin - uberfast and easy-to-use pastebin.
+//
+// Copyright (c) 2018, Stanislav N. aka pztrn and Fast Paste Bin
+// developers.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject
+// to the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+package config
+
+// ConfigPastes describes pastes subsystem configuration.
+type ConfigPastes struct {
+	Pagination int `yaml:"pagination"`
+}

config/struct.go

@@ -29,4 +29,5 @@ type ConfigStruct struct {
 	Database ConfigDatabase `yaml:"database"`
 	Logging  ConfigLogging  `yaml:"logging"`
 	HTTP     ConfigHTTP     `yaml:"http"`
+	Pastes   ConfigPastes   `yaml:"pastes"`
 }

context/context.go

@@ -146,4 +146,6 @@ func (c *Context) RegisterEcho(e *echo.Echo) {
 // Shutdown shutdowns entire application.
 func (c *Context) Shutdown() {
 	c.Logger.Info().Msg("Shutting down Fast Pastebin...")
+
+	c.Database.Shutdown()
 }

context/exported.go

@@ -26,7 +26,7 @@ package context
 
 const (
 	// Version .
-	Version = "0.1.1"
+	Version = "0.1.2-dev"
 )
 
 // New creates new context.

database/database.go

@@ -26,47 +26,65 @@ package database
 
 import (
 	// stdlib
-	"fmt"
+	"database/sql"
+
+	// local
+	"github.com/pztrn/fastpastebin/database/dialects/flatfiles"
+	"github.com/pztrn/fastpastebin/database/dialects/interface"
+	"github.com/pztrn/fastpastebin/database/dialects/mysql"
+	"github.com/pztrn/fastpastebin/pastes/model"
 
 	// other
 	_ "github.com/go-sql-driver/mysql"
-	"github.com/jmoiron/sqlx"
 )
 
 // Database represents control structure for database connection.
 type Database struct {
-	db *sqlx.DB
+	db dialectinterface.Interface
 }
 
-// GetDatabaseConnection returns current database connection.
-func (db *Database) GetDatabaseConnection() *sqlx.DB {
-	return db.db
+func (db *Database) GetDatabaseConnection() *sql.DB {
+	if db.db != nil {
+		return db.db.GetDatabaseConnection()
+	}
+
+	return nil
+}
+
+func (db *Database) GetPaste(pasteID int) (*pastesmodel.Paste, error) {
+	return db.db.GetPaste(pasteID)
+}
+
+func (db *Database) GetPagedPastes(page int) ([]pastesmodel.Paste, error) {
+	return db.db.GetPagedPastes(page)
+}
+
+func (db *Database) GetPastesPages() int {
+	return db.db.GetPastesPages()
 }
 
 // Initialize initializes connection to database.
 func (db *Database) Initialize() {
 	c.Logger.Info().Msg("Initializing database connection...")
 
-	// There might be only user, without password. MySQL/MariaDB driver
-	// in DSN wants "user" or "user:password", "user:" is invalid.
-	var userpass = ""
-	if c.Config.Database.Password == "" {
-		userpass = c.Config.Database.Username
+	if c.Config.Database.Type == "mysql" {
+		mysql.New(c)
+	} else if c.Config.Database.Type == "flatfiles" {
+		flatfiles.New(c)
 	} else {
-		userpass = c.Config.Database.Username + ":" + c.Config.Database.Password
+		c.Logger.Fatal().Msgf("Unknown database type: %s", c.Config.Database.Type)
+	}
 }
 
-	dbConnString := fmt.Sprintf("%s@tcp(%s:%s)/%s?parseTime=true&collation=utf8mb4_unicode_ci&charset=utf8mb4", userpass, c.Config.Database.Address, c.Config.Database.Port, c.Config.Database.Database)
-	c.Logger.Debug().Msgf("Database connection string: %s", dbConnString)
-
-	dbConn, err := sqlx.Connect("mysql", dbConnString)
-	if err != nil {
-		c.Logger.Panic().Msgf("Failed to connect to database: %s", err.Error())
+func (db *Database) RegisterDialect(di dialectinterface.Interface) {
+	db.db = di
+	db.db.Initialize()
 }
 
-	// Force UTC for current connection.
-	_ = dbConn.MustExec("SET @@session.time_zone='+00:00';")
-
-	c.Logger.Info().Msg("Database connection established")
-	db.db = dbConn
+func (db *Database) SavePaste(p *pastesmodel.Paste) (int64, error) {
+	return db.db.SavePaste(p)
+}
+
+func (db *Database) Shutdown() {
+	db.db.Shutdown()
 }

database/dialects/flatfiles/exported.go

@@ -0,0 +1,42 @@
+// Fast Paste Bin - uberfast and easy-to-use pastebin.
+//
+// Copyright (c) 2018, Stanislav N. aka pztrn and Fast Paste Bin
+// developers.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject
+// to the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+package flatfiles
+
+import (
+	// local
+	"github.com/pztrn/fastpastebin/context"
+	"github.com/pztrn/fastpastebin/database/dialects/interface"
+)
+
+var (
+	c *context.Context
+	f *FlatFiles
+)
+
+func New(cc *context.Context) {
+	c = cc
+	f = &FlatFiles{}
+	c.Database.RegisterDialect(dialectinterface.Interface(Handler{}))
+}

database/dialects/flatfiles/flatfiles.go

@@ -0,0 +1,246 @@
+// Fast Paste Bin - uberfast and easy-to-use pastebin.
+//
+// Copyright (c) 2018, Stanislav N. aka pztrn and Fast Paste Bin
+// developers.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject
+// to the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+package flatfiles
+
+import (
+	// stdlib
+	"database/sql"
+	"encoding/json"
+	"io/ioutil"
+	"os"
+	"os/user"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"sync"
+
+	// local
+	"github.com/pztrn/fastpastebin/pastes/model"
+)
+
+type FlatFiles struct {
+	pastesIndex []*Index
+	path        string
+	writeMutex  sync.Mutex
+}
+
+func (ff *FlatFiles) GetDatabaseConnection() *sql.DB {
+	return nil
+}
+
+func (ff *FlatFiles) GetPaste(pasteID int) (*pastesmodel.Paste, error) {
+	ff.writeMutex.Lock()
+	pastePath := filepath.Join(ff.path, "pastes", strconv.Itoa(pasteID)+".json")
+	c.Logger.Debug().Msgf("Trying to load paste data from '%s'...", pastePath)
+	pasteInBytes, err := ioutil.ReadFile(pastePath)
+	if err != nil {
+		c.Logger.Debug().Msgf("Failed to read paste from storage: %s", err.Error())
+		return nil, err
+	}
+	c.Logger.Debug().Msgf("Loaded %d bytes: %s", len(pasteInBytes), string(pasteInBytes))
+	ff.writeMutex.Unlock()
+
+	paste := &pastesmodel.Paste{}
+	err = json.Unmarshal(pasteInBytes, paste)
+	if err != nil {
+		c.Logger.Error().Msgf("Failed to parse paste: %s", err.Error())
+		return nil, err
+	}
+
+	return paste, nil
+}
+
+func (ff *FlatFiles) GetPagedPastes(page int) ([]pastesmodel.Paste, error) {
+	// Pagination.
+	var startPagination = 0
+	if page > 1 {
+		startPagination = (page - 1) * c.Config.Pastes.Pagination
+	}
+
+	c.Logger.Debug().Msgf("Pastes index: %+v", ff.pastesIndex)
+
+	// Iteration one - get only public pastes.
+	var publicPastes []*Index
+	for _, paste := range ff.pastesIndex {
+		if !paste.Private {
+			publicPastes = append(publicPastes, paste)
+		}
+	}
+
+	c.Logger.Debug().Msgf("%+v", publicPastes)
+
+	// Iteration two - get paginated pastes.
+	var pastesData []pastesmodel.Paste
+	for idx, paste := range publicPastes {
+		if len(pastesData) == c.Config.Pastes.Pagination {
+			break
+		}
+
+		if idx < startPagination {
+			c.Logger.Debug().Msgf("Paste with index %d isn't in pagination query: too low index", idx)
+			continue
+		}
+
+		if (idx-1 >= startPagination && page > 1 && idx > startPagination+((page-1)*c.Config.Pastes.Pagination)) || (idx-1 >= startPagination && page == 1 && idx > startPagination+(page*c.Config.Pastes.Pagination)) {
+			c.Logger.Debug().Msgf("Paste with index %d isn't in pagination query: too high index", idx)
+			break
+		}
+		c.Logger.Debug().Msgf("Getting paste data (ID: %d, index: %d)", paste.ID, idx)
+
+		// Get paste data.
+		pasteData := &pastesmodel.Paste{}
+		pasteRawData, err := ioutil.ReadFile(filepath.Join(ff.path, "pastes", strconv.Itoa(paste.ID)+".json"))
+		if err != nil {
+			c.Logger.Error().Msgf("Failed to read paste data: %s", err.Error())
+			continue
+		}
+
+		err = json.Unmarshal(pasteRawData, pasteData)
+		if err != nil {
+			c.Logger.Error().Msgf("Failed to parse paste data: %s", err.Error())
+			continue
+		}
+
+		pastesData = append(pastesData, (*pasteData))
+	}
+
+	return pastesData, nil
+}
+
+func (ff *FlatFiles) GetPastesPages() int {
+	// Get public pastes count.
+	var publicPastes []*Index
+
+	ff.writeMutex.Lock()
+	for _, paste := range ff.pastesIndex {
+		if !paste.Private {
+			publicPastes = append(publicPastes, paste)
+		}
+	}
+	ff.writeMutex.Unlock()
+
+	// Calculate pages.
+	pages := len(publicPastes) / c.Config.Pastes.Pagination
+	// Check if we have any remainder. Add 1 to pages count if so.
+	if len(publicPastes)%c.Config.Pastes.Pagination > 0 {
+		pages++
+	}
+
+	return pages
+}
+
+func (ff *FlatFiles) Initialize() {
+	c.Logger.Info().Msg("Initializing flatfiles storage...")
+
+	path := c.Config.Database.Path
+	// Get proper paste file path.
+	if strings.Contains(c.Config.Database.Path, "~") {
+		curUser, err := user.Current()
+		if err != nil {
+			c.Logger.Error().Msg("Failed to get current user. Will replace '~' for '/' in storage path!")
+			path = strings.Replace(path, "~", "/", -1)
+		}
+		path = strings.Replace(path, "~", curUser.HomeDir, -1)
+	}
+
+	path, _ = filepath.Abs(path)
+	ff.path = path
+	c.Logger.Debug().Msgf("Storage path is now: %s", ff.path)
+
+	// Create directory if neccessary.
+	if _, err := os.Stat(ff.path); err != nil {
+		c.Logger.Debug().Msgf("Directory '%s' does not exist, creating...", ff.path)
+		os.MkdirAll(ff.path, os.ModePerm)
+	} else {
+		c.Logger.Debug().Msgf("Directory '%s' already exists", ff.path)
+	}
+
+	// Create directory for pastes.
+	if _, err := os.Stat(filepath.Join(ff.path, "pastes")); err != nil {
+		c.Logger.Debug().Msgf("Directory '%s' does not exist, creating...", filepath.Join(ff.path, "pastes"))
+		os.MkdirAll(filepath.Join(ff.path, "pastes"), os.ModePerm)
+	} else {
+		c.Logger.Debug().Msgf("Directory '%s' already exists", filepath.Join(ff.path, "pastes"))
+	}
+
+	// Load pastes index.
+	ff.pastesIndex = []*Index{}
+	if _, err := os.Stat(filepath.Join(ff.path, "pastes", "index.json")); err != nil {
+		c.Logger.Warn().Msg("Pastes index file does not exist, will create new one")
+	} else {
+		indexData, err := ioutil.ReadFile(filepath.Join(ff.path, "pastes", "index.json"))
+		if err != nil {
+			c.Logger.Fatal().Msg("Failed to read contents of index file!")
+		}
+
+		err = json.Unmarshal(indexData, &ff.pastesIndex)
+		if err != nil {
+			c.Logger.Error().Msgf("Failed to parse index file contents from JSON into internal structure. Will create new index file. All of your previous pastes will became unavailable. Error was: %s", err.Error())
+		}
+
+		c.Logger.Debug().Msgf("Parsed pastes index: %+v", ff.pastesIndex)
+	}
+}
+
+func (ff *FlatFiles) SavePaste(p *pastesmodel.Paste) (int64, error) {
+	ff.writeMutex.Lock()
+	// Write paste data on disk.
+	filesOnDisk, _ := ioutil.ReadDir(filepath.Join(ff.path, "pastes"))
+	pasteID := len(filesOnDisk) + 1
+	c.Logger.Debug().Msgf("Writing paste to disk, ID will be " + strconv.Itoa(pasteID))
+	p.ID = pasteID
+	data, err := json.Marshal(p)
+	if err != nil {
+		ff.writeMutex.Unlock()
+		return 0, err
+	}
+	err = ioutil.WriteFile(filepath.Join(ff.path, "pastes", strconv.Itoa(pasteID)+".json"), data, 0644)
+	if err != nil {
+		ff.writeMutex.Unlock()
+		return 0, err
+	}
+	// Add it to cache.
+	indexData := &Index{}
+	indexData.ID = pasteID
+	indexData.Private = p.Private
+	ff.pastesIndex = append(ff.pastesIndex, indexData)
+	ff.writeMutex.Unlock()
+	return int64(pasteID), nil
+}
+
+func (ff *FlatFiles) Shutdown() {
+	c.Logger.Info().Msg("Saving indexes...")
+	indexData, err := json.Marshal(ff.pastesIndex)
+	if err != nil {
+		c.Logger.Error().Msgf("Failed to encode index data into JSON: %s", err.Error())
+		return
+	}
+
+	err = ioutil.WriteFile(filepath.Join(ff.path, "pastes", "index.json"), indexData, 0644)
+	if err != nil {
+		c.Logger.Error().Msgf("Failed to write index data to file. Pretty sure that you've lost your pastes.")
+		return
+	}
+}

database/dialects/flatfiles/handler.go

@@ -0,0 +1,63 @@
+// Fast Paste Bin - uberfast and easy-to-use pastebin.
+//
+// Copyright (c) 2018, Stanislav N. aka pztrn and Fast Paste Bin
+// developers.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject
+// to the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+package flatfiles
+
+import (
+	// stdlib
+	"database/sql"
+
+	// local
+	"github.com/pztrn/fastpastebin/pastes/model"
+)
+
+type Handler struct{}
+
+func (dbh Handler) GetDatabaseConnection() *sql.DB {
+	return f.GetDatabaseConnection()
+}
+
+func (dbh Handler) GetPaste(pasteID int) (*pastesmodel.Paste, error) {
+	return f.GetPaste(pasteID)
+}
+
+func (dbh Handler) GetPagedPastes(page int) ([]pastesmodel.Paste, error) {
+	return f.GetPagedPastes(page)
+}
+
+func (dbh Handler) GetPastesPages() int {
+	return f.GetPastesPages()
+}
+
+func (dbh Handler) Initialize() {
+	f.Initialize()
+}
+
+func (dbh Handler) SavePaste(p *pastesmodel.Paste) (int64, error) {
+	return f.SavePaste(p)
+}
+
+func (dbh Handler) Shutdown() {
+	f.Shutdown()
+}

database/dialects/flatfiles/index.go

@@ -0,0 +1,31 @@
+// Fast Paste Bin - uberfast and easy-to-use pastebin.
+//
+// Copyright (c) 2018, Stanislav N. aka pztrn and Fast Paste Bin
+// developers.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject
+// to the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+package flatfiles
+
+// Index describes paste index structure for flatfiles data storage.
+type Index struct {
+	ID      int  `yaml:"id"`
+	Private bool `json:"private"`
+}

database/dialects/interface/dialectinterface.go

@@ -0,0 +1,43 @@
+// Fast Paste Bin - uberfast and easy-to-use pastebin.
+//
+// Copyright (c) 2018, Stanislav N. aka pztrn and Fast Paste Bin
+// developers.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject
+// to the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+package dialectinterface
+
+import (
+	// stdlib
+	"database/sql"
+
+	// local
+	"github.com/pztrn/fastpastebin/pastes/model"
+)
+
+type Interface interface {
+	GetDatabaseConnection() *sql.DB
+	GetPaste(pasteID int) (*pastesmodel.Paste, error)
+	GetPagedPastes(page int) ([]pastesmodel.Paste, error)
+	GetPastesPages() int
+	Initialize()
+	SavePaste(p *pastesmodel.Paste) (int64, error)
+	Shutdown()
+}

database/dialects/mysql/exported.go

@@ -0,0 +1,42 @@
+// Fast Paste Bin - uberfast and easy-to-use pastebin.
+//
+// Copyright (c) 2018, Stanislav N. aka pztrn and Fast Paste Bin
+// developers.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject
+// to the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+package mysql
+
+import (
+	// local
+	"github.com/pztrn/fastpastebin/context"
+	"github.com/pztrn/fastpastebin/database/dialects/interface"
+)
+
+var (
+	c *context.Context
+	d *Database
+)
+
+func New(cc *context.Context) {
+	c = cc
+	d = &Database{}
+	c.Database.RegisterDialect(dialectinterface.Interface(Handler{}))
+}

database/dialects/mysql/handler.go

@@ -0,0 +1,63 @@
+// Fast Paste Bin - uberfast and easy-to-use pastebin.
+//
+// Copyright (c) 2018, Stanislav N. aka pztrn and Fast Paste Bin
+// developers.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject
+// to the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+package mysql
+
+import (
+	// stdlib
+	"database/sql"
+
+	// local
+	"github.com/pztrn/fastpastebin/pastes/model"
+)
+
+type Handler struct{}
+
+func (dbh Handler) GetDatabaseConnection() *sql.DB {
+	return d.GetDatabaseConnection()
+}
+
+func (dbh Handler) GetPaste(pasteID int) (*pastesmodel.Paste, error) {
+	return d.GetPaste(pasteID)
+}
+
+func (dbh Handler) GetPagedPastes(page int) ([]pastesmodel.Paste, error) {
+	return d.GetPagedPastes(page)
+}
+
+func (dbh Handler) GetPastesPages() int {
+	return d.GetPastesPages()
+}
+
+func (dbh Handler) Initialize() {
+	d.Initialize()
+}
+
+func (dbh Handler) SavePaste(p *pastesmodel.Paste) (int64, error) {
+	return d.SavePaste(p)
+}
+
+func (dbh Handler) Shutdown() {
+	d.Shutdown()
+}

database/dialects/mysql/mysqldatabase.go

@@ -0,0 +1,156 @@
+// Fast Paste Bin - uberfast and easy-to-use pastebin.
+//
+// Copyright (c) 2018, Stanislav N. aka pztrn and Fast Paste Bin
+// developers.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject
+// to the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+package mysql
+
+import (
+	// stdlib
+	"database/sql"
+	"fmt"
+
+	// local
+	"github.com/pztrn/fastpastebin/pastes/model"
+
+	// other
+	_ "github.com/go-sql-driver/mysql"
+	"github.com/jmoiron/sqlx"
+)
+
+// Database is a MySQL/MariaDB connection controlling structure.
+type Database struct {
+	db *sqlx.DB
+}
+
+func (db *Database) GetDatabaseConnection() *sql.DB {
+	return db.db.DB
+}
+
+// GetPaste returns a single paste by ID.
+func (db *Database) GetPaste(pasteID int) (*pastesmodel.Paste, error) {
+	p := &pastesmodel.Paste{}
+	err := db.db.Get(p, db.db.Rebind("SELECT * FROM `pastes` WHERE id=?"), pasteID)
+	if err != nil {
+		return nil, err
+	}
+
+	return p, nil
+}
+
+func (db *Database) GetPagedPastes(page int) ([]pastesmodel.Paste, error) {
+	var pastesRaw []pastesmodel.Paste
+	var pastes []pastesmodel.Paste
+
+	// Pagination.
+	var startPagination = 0
+	if page > 1 {
+		startPagination = (page - 1) * c.Config.Pastes.Pagination
+	}
+
+	err := db.db.Select(&pastesRaw, db.db.Rebind("SELECT * FROM `pastes` WHERE private != true ORDER BY id DESC LIMIT ? OFFSET ?"), c.Config.Pastes.Pagination, startPagination)
+	if err != nil {
+		return nil, err
+	}
+
+	for i := range pastesRaw {
+		if !pastesRaw[i].IsExpired() {
+			pastes = append(pastes, pastesRaw[i])
+		}
+	}
+
+	return pastes, nil
+}
+
+func (db *Database) GetPastesPages() int {
+	var pastesRaw []pastesmodel.Paste
+	var pastes []pastesmodel.Paste
+	err := db.db.Get(&pastesRaw, "SELECT * FROM `pastes` WHERE private != true")
+	if err != nil {
+		return 1
+	}
+
+	// Check if pastes isn't expired.
+	for i := range pastesRaw {
+		if !pastesRaw[i].IsExpired() {
+			pastes = append(pastes, pastesRaw[i])
+		}
+	}
+
+	// Calculate pages.
+	pages := len(pastes) / c.Config.Pastes.Pagination
+	// Check if we have any remainder. Add 1 to pages count if so.
+	if len(pastes)%c.Config.Pastes.Pagination > 0 {
+		pages++
+	}
+
+	return pages
+}
+
+// Initialize initializes MySQL/MariaDB connection.
+func (db *Database) Initialize() {
+	c.Logger.Info().Msg("Initializing database connection...")
+
+	// There might be only user, without password. MySQL/MariaDB driver
+	// in DSN wants "user" or "user:password", "user:" is invalid.
+	var userpass = ""
+	if c.Config.Database.Password == "" {
+		userpass = c.Config.Database.Username
+	} else {
+		userpass = c.Config.Database.Username + ":" + c.Config.Database.Password
+	}
+
+	dbConnString := fmt.Sprintf("%s@tcp(%s:%s)/%s?parseTime=true&collation=utf8mb4_unicode_ci&charset=utf8mb4", userpass, c.Config.Database.Address, c.Config.Database.Port, c.Config.Database.Database)
+	c.Logger.Debug().Msgf("Database connection string: %s", dbConnString)
+
+	dbConn, err := sqlx.Connect("mysql", dbConnString)
+	if err != nil {
+		c.Logger.Panic().Msgf("Failed to connect to database: %s", err.Error())
+	}
+
+	// Force UTC for current connection.
+	_ = dbConn.MustExec("SET @@session.time_zone='+00:00';")
+
+	c.Logger.Info().Msg("Database connection established")
+	db.db = dbConn
+}
+
+func (db *Database) SavePaste(p *pastesmodel.Paste) (int64, error) {
+	result, err := db.db.NamedExec("INSERT INTO `pastes` (title, data, created_at, keep_for, keep_for_unit_type, language, private, password, password_salt) VALUES (:title, :data, :created_at, :keep_for, :keep_for_unit_type, :language, :private, :password, :password_salt)", p)
+	if err != nil {
+		return 0, err
+	}
+
+	ID, err1 := result.LastInsertId()
+	if err1 != nil {
+		return 0, err
+	}
+
+	return ID, nil
+}
+
+func (db *Database) Shutdown() {
+	err := db.db.Close()
+	if err != nil {
+		c.Logger.Error().Msgf("Failed to close database connection: %s", err.Error())
+	}
+}

database/handler.go

@@ -25,20 +25,47 @@
 package database
 
 import (
-	// other
-	"github.com/jmoiron/sqlx"
+	// stdlib
+	"database/sql"
+
+	// local
+	"github.com/pztrn/fastpastebin/database/dialects/interface"
+	"github.com/pztrn/fastpastebin/pastes/model"
 )
 
 // Handler is an interfaceable structure that proxifies calls from anyone
 // to Database structure.
 type Handler struct{}
 
-// GetDatabaseConnection returns current database connection.
-func (dbh Handler) GetDatabaseConnection() *sqlx.DB {
+func (dbh Handler) GetDatabaseConnection() *sql.DB {
 	return d.GetDatabaseConnection()
 }
 
+func (dbh Handler) GetPaste(pasteID int) (*pastesmodel.Paste, error) {
+	return d.GetPaste(pasteID)
+}
+
+func (dbh Handler) GetPagedPastes(page int) ([]pastesmodel.Paste, error) {
+	return d.GetPagedPastes(page)
+}
+
+func (dbh Handler) GetPastesPages() int {
+	return d.GetPastesPages()
+}
+
 // Initialize initializes connection to database.
 func (dbh Handler) Initialize() {
 	d.Initialize()
 }
+
+func (dbh Handler) RegisterDialect(di dialectinterface.Interface) {
+	d.RegisterDialect(di)
+}
+
+func (dbh Handler) SavePaste(p *pastesmodel.Paste) (int64, error) {
+	return d.SavePaste(p)
+}
+
+func (dbh Handler) Shutdown() {
+	d.Shutdown()
+}

database/interface/databaseinterface.go

@@ -25,13 +25,23 @@
 package databaseinterface
 
 import (
-	// other
-	"github.com/jmoiron/sqlx"
+	// stdlib
+	"database/sql"
+
+	// local
+	"github.com/pztrn/fastpastebin/database/dialects/interface"
+	"github.com/pztrn/fastpastebin/pastes/model"
 )
 
 // Interface represents database interface which is available to all
 // parts of application and registers with context.Context.
 type Interface interface {
-	GetDatabaseConnection() *sqlx.DB
+	GetDatabaseConnection() *sql.DB
+	GetPaste(pasteID int) (*pastesmodel.Paste, error)
+	GetPagedPastes(page int) ([]pastesmodel.Paste, error)
+	GetPastesPages() int
 	Initialize()
+	RegisterDialect(dialectinterface.Interface)
+	SavePaste(p *pastesmodel.Paste) (int64, error)
+	Shutdown()
 }

database/migrations/exported.go

@@ -54,8 +54,12 @@ func Migrate() {
 	// Add new migrations BEFORE this message.
 
 	dbConn := c.Database.GetDatabaseConnection()
-	err := goose.Up(dbConn.DB, ".")
+	if dbConn != nil {
+		err := goose.Up(dbConn, ".")
 		if err != nil {
 			c.Logger.Panic().Msgf("Failed to migrate database to latest version: %s", err.Error())
 		}
+	} else {
+		c.Logger.Warn().Msg("Current database dialect isn't supporting migrations, skipping")
+	}
 }

examples/fastpastebin.yaml.dist

@@ -1,6 +1,13 @@
 # Database configuration.
-# Only MySQL database is supported for now.
+# Only MySQL database and flatfiles are supported for now.
 database:
+  # Database type. The only supported ATM is "mysql" and "flatfiles".
+  type: "mysql"
+  # Path for data stored with "flatfiles" database adapter.
+  # Will be comletely ignored for MySQL/MariaDB.
+  path: "./data"
+  # Next parameters are strictly for MySQL/MariaDB connections and
+  # will be ignored by "flatfiles" adapter.
   address: "localhost"
   port: "3306"
   username: "fastpastebin"
@@ -18,9 +25,14 @@ logging:
 
 # HTTP server configuration.
 http:
-  address: "localhost"
+  address: "192.168.0.14"
   port: "25544"
   # By default we're allowing only HTTPS requests. Setting this to true
   # will allow HTTP requests. Useful for developing or if you're
   # running Fast Pastebin behind reverse proxy that does SSL termination.
-  allow_insecure: false
+  allow_insecure: true
+
+# Pastes configuration.
+pastes:
+  # Pastes per page.
+  pagination: 10

pastes/api_http.go

@@ -36,6 +36,7 @@ import (
 	// local
 	"github.com/pztrn/fastpastebin/captcha"
 	"github.com/pztrn/fastpastebin/pagination"
+	"github.com/pztrn/fastpastebin/pastes/model"
 	"github.com/pztrn/fastpastebin/templater"
 
 	// other
@@ -61,7 +62,7 @@ func pasteGET(ec echo.Context) error {
 	c.Logger.Debug().Msgf("Requesting paste #%+v", pasteID)
 
 	// Get paste.
-	paste, err1 := GetByID(pasteID)
+	paste, err1 := c.Database.GetPaste(pasteID)
 	if err1 != nil {
 		c.Logger.Error().Msgf("Failed to get paste #%d: %s", pasteID, err1.Error())
 		errtpl := templater.GetErrorTemplate(ec, "Paste #"+strconv.Itoa(pasteID)+" not found")
@@ -172,7 +173,7 @@ func pastePasswordedVerifyGet(ec echo.Context) error {
 	pasteID, _ := strconv.Atoi(regexInts.FindAllString(pasteIDRaw, 1)[0])
 
 	// Get paste.
-	paste, err1 := GetByID(pasteID)
+	paste, err1 := c.Database.GetPaste(pasteID)
 	if err1 != nil {
 		c.Logger.Error().Msgf("Failed to get paste #%d: %s", pasteID, err1.Error())
 		errtpl := templater.GetErrorTemplate(ec, "Paste #"+pasteIDRaw+" not found")
@@ -216,7 +217,7 @@ func pastePasswordedVerifyPost(ec echo.Context) error {
 	c.Logger.Debug().Msgf("Requesting paste #%+v", pasteID)
 
 	// Get paste.
-	paste, err1 := GetByID(pasteID)
+	paste, err1 := c.Database.GetPaste(pasteID)
 	if err1 != nil {
 		c.Logger.Error().Msgf("Failed to get paste #%d: %s", pasteID, err1.Error())
 		errtpl := templater.GetErrorTemplate(ec, "Paste #"+strconv.Itoa(pasteID)+" not found")
@@ -276,7 +277,7 @@ func pastePOST(ec echo.Context) error {
 		return ec.HTML(http.StatusBadRequest, errtpl)
 	}
 
-	paste := &Paste{
+	paste := &pastesmodel.Paste{
 		Title:    params["paste-title"][0],
 		Data:     params["paste-contents"][0],
 		Language: params["paste-language"][0],
@@ -301,7 +302,7 @@ func pastePOST(ec echo.Context) error {
 	paste.KeepFor = keepFor
 
 	keepForUnitRaw := keepForUnitRegex.FindAllString(params["paste-keep-for"][0], 1)[0]
-	keepForUnit := PASTE_KEEPS_CORELLATION[keepForUnitRaw]
+	keepForUnit := pastesmodel.PASTE_KEEPS_CORELLATION[keepForUnitRaw]
 	paste.KeepForUnitType = keepForUnit
 
 	// Try to autodetect if it was selected.
@@ -326,7 +327,7 @@ func pastePOST(ec echo.Context) error {
 		paste.CreatePassword(pastePassword[0])
 	}
 
-	id, err2 := Save(paste)
+	id, err2 := c.Database.SavePaste(paste)
 	if err2 != nil {
 		c.Logger.Debug().Msgf("Failed to save paste: %s", err2.Error())
 		errtpl := templater.GetErrorTemplate(ec, "Failed to save paste. Please, try again later.")
@@ -353,7 +354,7 @@ func pasteRawGET(ec echo.Context) error {
 	c.Logger.Debug().Msgf("Requesting paste #%+v", pasteID)
 
 	// Get paste.
-	paste, err1 := GetByID(pasteID)
+	paste, err1 := c.Database.GetPaste(pasteID)
 	if err1 != nil {
 		c.Logger.Error().Msgf("Failed to get paste #%d from database: %s", pasteID, err1.Error())
 		return ec.HTML(http.StatusBadRequest, "Paste #"+pasteIDRaw+" does not exist.")
@@ -401,7 +402,7 @@ func pastesGET(ec echo.Context) error {
 	c.Logger.Debug().Msgf("Requested page #%d", page)
 
 	// Get pastes IDs.
-	pastes, err3 := GetPagedPastes(page)
+	pastes, err3 := c.Database.GetPagedPastes(page)
 	c.Logger.Debug().Msgf("Got %d pastes", len(pastes))
 
 	var pastesString = "No pastes to show."
@@ -438,7 +439,7 @@ func pastesGET(ec echo.Context) error {
 	}
 
 	// Pagination.
-	pages := GetPastesPages()
+	pages := c.Database.GetPastesPages()
 	c.Logger.Debug().Msgf("Total pages: %d, current: %d", pages, page)
 	paginationHTML := pagination.CreateHTML(page, pages, "/pastes/")
 

pastes/model/model.go

@@ -22,7 +22,7 @@
 // TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
 // OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-package pastes
+package pastesmodel
 
 import (
 	// stdlib
@@ -55,16 +55,16 @@ var (
 
 // Paste represents paste itself.
 type Paste struct {
-	ID              int        `db:"id"`
-	Title           string     `db:"title"`
-	Data            string     `db:"data"`
-	CreatedAt       *time.Time `db:"created_at"`
-	KeepFor         int        `db:"keep_for"`
-	KeepForUnitType int        `db:"keep_for_unit_type"`
-	Language        string     `db:"language"`
-	Private         bool       `db:"private"`
-	Password        string     `db:"password"`
-	PasswordSalt    string     `db:"password_salt"`
+	ID              int        `db:"id" json:"id"`
+	Title           string     `db:"title" json:"title"`
+	Data            string     `db:"data" json:"data"`
+	CreatedAt       *time.Time `db:"created_at" json:"created_at"`
+	KeepFor         int        `db:"keep_for" json:"keep_for"`
+	KeepForUnitType int        `db:"keep_for_unit_type" json:"keep_for_unit_type"`
+	Language        string     `db:"language" json:"language"`
+	Private         bool       `db:"private" json:"private"`
+	Password        string     `db:"password" json:"password"`
+	PasswordSalt    string     `db:"password_salt" json:"password_salt"`
 }
 
 // CreatePassword creates password for current paste.

pastes/queries.go

@@ -1,115 +0,0 @@
-// Fast Paste Bin - uberfast and easy-to-use pastebin.
-//
-// Copyright (c) 2018, Stanislav N. aka pztrn and Fast Paste Bin
-// developers.
-//
-// Permission is hereby granted, free of charge, to any person obtaining
-// a copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to
-// permit persons to whom the Software is furnished to do so, subject
-// to the following conditions:
-//
-// The above copyright notice and this permission notice shall be
-// included in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
-// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-package pastes
-
-const (
-	// Pagination. Hardcoded for 10 for now.
-	PAGINATION = 10
-)
-
-// GetByID returns a single paste by ID.
-func GetByID(id int) (*Paste, error) {
-	p := &Paste{}
-	dbConn := c.Database.GetDatabaseConnection()
-	err := dbConn.Get(p, dbConn.Rebind("SELECT * FROM `pastes` WHERE id=?"), id)
-	if err != nil {
-		return nil, err
-	}
-
-	// Lets go with checking.
-
-	return p, nil
-}
-
-// GetPagedPastes returns a paged slice of pastes.
-func GetPagedPastes(page int) ([]Paste, error) {
-	var pastesRaw []Paste
-	var pastes []Paste
-	dbConn := c.Database.GetDatabaseConnection()
-
-	// Pagination - 10 pastes on page.
-	var startPagination = 0
-	if page > 1 {
-		startPagination = (page - 1) * PAGINATION
-	}
-
-	err := dbConn.Select(&pastesRaw, dbConn.Rebind("SELECT * FROM `pastes` WHERE private != true ORDER BY id DESC LIMIT ? OFFSET ?"), PAGINATION, startPagination)
-	if err != nil {
-		return nil, err
-	}
-
-	for i := range pastesRaw {
-		if !pastesRaw[i].IsExpired() {
-			pastes = append(pastes, pastesRaw[i])
-		}
-	}
-
-	return pastes, nil
-
-}
-
-// GetPastesPages returns an integer that represents quantity of pages
-// that can be requested (or drawn in paginator).
-func GetPastesPages() int {
-	var pastesRaw []Paste
-	var pastes []Paste
-	dbConn := c.Database.GetDatabaseConnection()
-	err := dbConn.Get(&pastesRaw, "SELECT * FROM `pastes` WHERE private != true")
-	if err != nil {
-		return 1
-	}
-
-	// Check if pastes isn't expired.
-	for i := range pastesRaw {
-		if !pastesRaw[i].IsExpired() {
-			pastes = append(pastes, pastesRaw[i])
-		}
-	}
-
-	// Calculate pages.
-	pages := len(pastes) / PAGINATION
-	// Check if we have any remainder. Add 1 to pages count if so.
-	if len(pastes)%PAGINATION > 0 {
-		pages++
-	}
-
-	return pages
-}
-
-// Save saves paste to database and returns it's ID.
-func Save(p *Paste) (int64, error) {
-	dbConn := c.Database.GetDatabaseConnection()
-	result, err := dbConn.NamedExec("INSERT INTO `pastes` (title, data, created_at, keep_for, keep_for_unit_type, language, private, password, password_salt) VALUES (:title, :data, :created_at, :keep_for, :keep_for_unit_type, :language, :private, :password, :password_salt)", p)
-	if err != nil {
-		return 0, err
-	}
-
-	ID, err1 := result.LastInsertId()
-	if err1 != nil {
-		return 0, err
-	}
-
-	return ID, nil
-}