Structure was simplified.
This commit is contained in:
parent
fe47f60581
commit
9a93ad9a3a
@ -1,4 +1,4 @@
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justguestbook ver. 1.2.1
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justguestbook ver. 1.3.0
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========================
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A library implementing simple guestbook with replies.
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@ -1,305 +0,0 @@
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package sqlite
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import (
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"database/sql"
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_ "embed"
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"fmt"
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"time"
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"git.arav.su/Arav/justguestbook/guestbook"
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_ "github.com/mattn/go-sqlite3"
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"github.com/pkg/errors"
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)
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var (
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//go:embed queries/schema.sql
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querySchema string
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//go:embed queries/entryGetAll.sql
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queryGetAll string
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//go:embed queries/entryCount.sql
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queryCount string
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//go:embed queries/entryNew.sql
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queryNewEntry string
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//go:embed queries/entryUpdate.sql
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queryUpdateEntry string
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//go:embed queries/entryDelete.sql
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queryDeleteEntry string
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//go:embed queries/replyNew.sql
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queryNewReply string
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//go:embed queries/replyUpdate.sql
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queryUpdateReply string
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//go:embed queries/replyDelete.sql
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queryDeleteReply string
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)
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var (
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stmtGetAll *sql.Stmt
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stmtCount *sql.Stmt
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stmtNewEntry *sql.Stmt
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stmtUpdateEntry *sql.Stmt
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stmtDeleteEntry *sql.Stmt
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stmtNewReply *sql.Stmt
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stmtUpdateReply *sql.Stmt
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stmtDeleteReply *sql.Stmt
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)
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func initDBStatements(db *sql.DB) error {
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db.Exec("PRAGMA foreign_keys = ON;")
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_, err := db.Exec(querySchema)
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if err != nil {
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return errors.Wrap(err, "failed to init schema")
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}
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stmtGetAll, err = db.Prepare(queryGetAll)
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if err != nil {
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return errors.Wrap(err, "failed to prepare queryGetAll")
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}
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stmtCount, err = db.Prepare(queryCount)
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if err != nil {
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return errors.Wrap(err, "failed to prepare queryCount")
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}
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stmtNewEntry, err = db.Prepare(queryNewEntry)
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if err != nil {
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return errors.Wrap(err, "failed to prepare queryNewEntry")
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}
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stmtUpdateEntry, err = db.Prepare(queryUpdateEntry)
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if err != nil {
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return errors.Wrap(err, "failed to prepare queryUpdateEntry")
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}
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stmtDeleteEntry, err = db.Prepare(queryDeleteEntry)
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if err != nil {
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return errors.Wrap(err, "failed to prepare queryDeleteEntry")
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}
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stmtNewReply, err = db.Prepare(queryNewReply)
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if err != nil {
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return errors.Wrap(err, "failed to prepare queryNewReply")
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}
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stmtUpdateReply, err = db.Prepare(queryUpdateReply)
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if err != nil {
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return errors.Wrap(err, "failed to prepare queryUpdateReply")
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}
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stmtDeleteReply, err = db.Prepare(queryDeleteReply)
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if err != nil {
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return errors.Wrap(err, "failed to prepare queryDeleteReply")
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}
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return nil
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}
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type SQLiteDatabase struct {
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db *sql.DB
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}
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func New(filePath string) (guestbook.Guestbook, error) {
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db, err := sql.Open("sqlite3", dsn(filePath))
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if err != nil {
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return nil, err
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}
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if err := initDBStatements(db); err != nil {
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return nil, err
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}
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return &SQLiteDatabase{db: db}, nil
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}
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func (d *SQLiteDatabase) Entries(page, pageSize int64) (entries []*guestbook.Entry, err error) {
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tx, err := d.db.Begin()
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if err != nil {
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return
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}
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defer tx.Rollback()
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rows, err := tx.Stmt(stmtGetAll).Query(pageSize, (page-1)*pageSize)
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if err != nil {
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return
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}
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defer rows.Close()
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for rows.Next() {
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var entry guestbook.Entry
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var entry_created int64
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var reply_created int64
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var reply_message string
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if err = rows.Scan(
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&entry.ID, &entry_created, &entry.Name,
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&entry.Message, &entry.Website, &entry.HideWebsite,
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&reply_created, &reply_message); err != nil {
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return
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}
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entry.Created = time.Unix(entry_created, 0)
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if err != nil {
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return
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}
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if reply_message != "" {
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if err != nil {
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return nil, err
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}
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entry.Reply = &guestbook.Reply{
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ID: entry.ID,
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// Created: date,
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Created: time.Unix(reply_created, 0),
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Message: reply_message}
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}
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entries = append(entries, &entry)
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}
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tx.Commit()
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return
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}
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// Count returns how much entries are in an `entry` table.
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func (d *SQLiteDatabase) Count() (count int64, err error) {
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tx, err := d.db.Begin()
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if err != nil {
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return -1, err
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}
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defer tx.Rollback()
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err = tx.Stmt(stmtCount).QueryRow().Scan(&count)
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if err != nil {
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return -1, err
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}
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tx.Commit()
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return count, nil
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}
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// NewEntry inserts a passed Entry struct and fills its ID field if successful.
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func (d *SQLiteDatabase) NewEntry(entry *guestbook.Entry) error {
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tx, err := d.db.Begin()
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if err != nil {
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return err
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}
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defer tx.Rollback()
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r, err := tx.Stmt(stmtNewEntry).Exec(entry.Created.UTC().Unix(), entry.Name, entry.Message,
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entry.Website, entry.HideWebsite)
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if err != nil {
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return err
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}
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entry.ID, err = r.LastInsertId()
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if err != nil {
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return err
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}
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tx.Commit()
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return nil
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}
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func (d *SQLiteDatabase) EditEntry(entry *guestbook.Entry) error {
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tx, err := d.db.Begin()
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if err != nil {
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return err
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}
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defer tx.Rollback()
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_, err = tx.Stmt(stmtUpdateEntry).Exec(entry.Name, entry.Message, entry.Website, entry.HideWebsite, entry.ID)
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if err != nil {
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return err
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}
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tx.Commit()
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return nil
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}
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func (d *SQLiteDatabase) DeleteEntry(entryID int64) error {
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tx, err := d.db.Begin()
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if err != nil {
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return err
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}
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defer tx.Rollback()
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if _, err = tx.Stmt(stmtDeleteEntry).Exec(entryID); err != nil {
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return err
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}
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tx.Commit()
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return nil
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}
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func (d *SQLiteDatabase) NewReply(reply *guestbook.Reply) error {
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tx, err := d.db.Begin()
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if err != nil {
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return err
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}
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defer tx.Rollback()
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_, err = tx.Stmt(stmtNewReply).Exec(reply.ID, reply.Created.UTC().Unix(), reply.Message)
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if err != nil {
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return err
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}
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tx.Commit()
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return nil
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}
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func (d *SQLiteDatabase) EditReply(reply *guestbook.Reply) error {
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tx, err := d.db.Begin()
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if err != nil {
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return err
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}
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defer tx.Rollback()
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_, err = tx.Stmt(stmtUpdateReply).Exec(reply.Message, reply.ID)
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if err != nil {
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return err
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}
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tx.Commit()
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return nil
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}
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func (d *SQLiteDatabase) DeleteReply(entryID int64) error {
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tx, err := d.db.Begin()
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if err != nil {
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return err
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}
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defer tx.Rollback()
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if _, err = tx.Stmt(stmtDeleteReply).Exec(entryID); err != nil {
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return err
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}
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tx.Commit()
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return nil
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}
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func (d *SQLiteDatabase) Close() error {
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stmtCount.Close()
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stmtDeleteEntry.Close()
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stmtDeleteReply.Close()
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stmtGetAll.Close()
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stmtNewEntry.Close()
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stmtNewReply.Close()
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stmtUpdateEntry.Close()
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stmtUpdateReply.Close()
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return d.db.Close()
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}
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func dsn(filePath string) string {
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return fmt.Sprintf("file:%s?_journal=WAL&_mutex=full", filePath)
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}
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INSERT INTO `entry`
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(`created`, `name`, `message`, `website`, `hide_website`)
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VALUES
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(?, ?, ?, ?, ?);
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UPDATE OR REPLACE `entry`
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SET
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`name` = ?,
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`message` = ?,
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`website` = ?,
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`hide_website` = ?
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WHERE `entry_id` = ?;
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UPDATE OR REPLACE `reply`
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SET
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`message` = ?
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WHERE `entry_id` = ?;
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-- SQLite3
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CREATE TABLE IF NOT EXISTS `entry` (
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`entry_id` INTEGER NOT NULL,
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`created` INTEGER NOT NULL,
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`name` TEXT NOT NULL,
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`message` TEXT NOT NULL,
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`website` TEXT NOT NULL,
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`hide_website` INTEGER NOT NULL DEFAULT TRUE,
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PRIMARY KEY (`entry_id`) );
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CREATE INDEX IF NOT EXISTS `entry_created_idx`
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ON `entry` (`created`);
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CREATE TABLE IF NOT EXISTS `reply` (
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`entry_id` INTEGER NOT NULL,
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`created` INTEGER NOT NULL,
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`message` TEXT NOT NULL,
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PRIMARY KEY (`entry_id`),
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FOREIGN KEY (`entry_id`)
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REFERENCES `entry` (`entry_id`)
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ON DELETE CASCADE
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ON UPDATE CASCADE );
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304
db_sqlite.go
Normal file
304
db_sqlite.go
Normal file
@ -0,0 +1,304 @@
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package guestbook
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import (
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"database/sql"
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_ "embed"
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"fmt"
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"time"
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_ "github.com/mattn/go-sqlite3"
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"github.com/pkg/errors"
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)
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var (
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//go:embed sqlite_queries/schema.sql
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sqlQuerySchema string
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//go:embed sqlite_queries/entryGetAll.sql
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sqlQueryGetAll string
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//go:embed sqlite_queries/entryCount.sql
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sqlQueryCount string
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//go:embed sqlite_queries/entryNew.sql
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sqlQueryNewEntry string
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//go:embed sqlite_queries/entryUpdate.sql
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sqlQueryUpdateEntry string
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//go:embed sqlite_queries/entryDelete.sql
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sqlQueryDeleteEntry string
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//go:embed sqlite_queries/replyNew.sql
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sqlQueryNewReply string
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//go:embed sqlite_queries/replyUpdate.sql
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sqlQueryUpdateReply string
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//go:embed sqlite_queries/replyDelete.sql
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sqlQueryDeleteReply string
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)
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var (
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sqlStmtGetAll *sql.Stmt
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sqlStmtCount *sql.Stmt
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sqlStmtNewEntry *sql.Stmt
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sqlStmtUpdateEntry *sql.Stmt
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sqlStmtDeleteEntry *sql.Stmt
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sqlStmtNewReply *sql.Stmt
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sqlStmtUpdateReply *sql.Stmt
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sqlStmtDeleteReply *sql.Stmt
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)
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func initSQLiteStatements(db *sql.DB) error {
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db.Exec("PRAGMA foreign_keys = ON;")
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_, err := db.Exec(sqlQuerySchema)
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if err != nil {
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return errors.Wrap(err, "failed to init schema")
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}
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sqlStmtGetAll, err = db.Prepare(sqlQueryGetAll)
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if err != nil {
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return errors.Wrap(err, "failed to prepare sqlQueryGetAll")
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}
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sqlStmtCount, err = db.Prepare(sqlQueryCount)
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if err != nil {
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return errors.Wrap(err, "failed to prepare sqlQueryCount")
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}
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sqlStmtNewEntry, err = db.Prepare(sqlQueryNewEntry)
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if err != nil {
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return errors.Wrap(err, "failed to prepare sqlQueryNewEntry")
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}
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sqlStmtUpdateEntry, err = db.Prepare(sqlQueryUpdateEntry)
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if err != nil {
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return errors.Wrap(err, "failed to prepare sqlQueryUpdateEntry")
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}
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sqlStmtDeleteEntry, err = db.Prepare(sqlQueryDeleteEntry)
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if err != nil {
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return errors.Wrap(err, "failed to prepare sqlQueryDeleteEntry")
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}
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sqlStmtNewReply, err = db.Prepare(sqlQueryNewReply)
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if err != nil {
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return errors.Wrap(err, "failed to prepare sqlQueryNewReply")
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}
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sqlStmtUpdateReply, err = db.Prepare(sqlQueryUpdateReply)
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if err != nil {
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return errors.Wrap(err, "failed to prepare sqlQueryUpdateReply")
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}
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sqlStmtDeleteReply, err = db.Prepare(sqlQueryDeleteReply)
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if err != nil {
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return errors.Wrap(err, "failed to prepare sqlQueryDeleteReply")
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}
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return nil
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}
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type SQLiteDatabase struct {
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db *sql.DB
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}
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func NewSQLiteDB(filePath string) (Guestbook, error) {
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db, err := sql.Open("sqlite3", sqliteDSN(filePath))
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if err != nil {
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return nil, err
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}
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if err := initSQLiteStatements(db); err != nil {
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return nil, err
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}
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return &SQLiteDatabase{db: db}, nil
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}
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func (d *SQLiteDatabase) Entries(page, pageSize int64) (entries []*Entry, err error) {
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tx, err := d.db.Begin()
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if err != nil {
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return
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}
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defer tx.Rollback()
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rows, err := tx.Stmt(sqlStmtGetAll).Query(pageSize, (page-1)*pageSize)
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if err != nil {
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return
|
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}
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defer rows.Close()
|
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for rows.Next() {
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var entry Entry
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var entry_created int64
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var reply_created int64
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var reply_message string
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if err = rows.Scan(
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&entry.ID, &entry_created, &entry.Name,
|
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&entry.Message, &entry.Website, &entry.HideWebsite,
|
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&reply_created, &reply_message); err != nil {
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return
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}
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entry.Created = time.Unix(entry_created, 0)
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if err != nil {
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return
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}
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|
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if reply_message != "" {
|
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if err != nil {
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return nil, err
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}
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entry.Reply = &Reply{
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ID: entry.ID,
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// Created: date,
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Created: time.Unix(reply_created, 0),
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Message: reply_message}
|
||||
}
|
||||
|
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entries = append(entries, &entry)
|
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}
|
||||
|
||||
tx.Commit()
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||||
|
||||
return
|
||||
}
|
||||
|
||||
// Count returns how much entries are in an `entry` table.
|
||||
func (d *SQLiteDatabase) Count() (count int64, err error) {
|
||||
tx, err := d.db.Begin()
|
||||
if err != nil {
|
||||
return -1, err
|
||||
}
|
||||
defer tx.Rollback()
|
||||
|
||||
err = tx.Stmt(sqlStmtCount).QueryRow().Scan(&count)
|
||||
if err != nil {
|
||||
return -1, err
|
||||
}
|
||||
|
||||
tx.Commit()
|
||||
|
||||
return count, nil
|
||||
}
|
||||
|
||||
// NewEntry inserts a passed Entry struct and fills its ID field if successful.
|
||||
func (d *SQLiteDatabase) NewEntry(entry *Entry) error {
|
||||
tx, err := d.db.Begin()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer tx.Rollback()
|
||||
|
||||
r, err := tx.Stmt(sqlStmtNewEntry).Exec(entry.Created.UTC().Unix(), entry.Name, entry.Message,
|
||||
entry.Website, entry.HideWebsite)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
entry.ID, err = r.LastInsertId()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
tx.Commit()
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (d *SQLiteDatabase) EditEntry(entry *Entry) error {
|
||||
tx, err := d.db.Begin()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer tx.Rollback()
|
||||
|
||||
_, err = tx.Stmt(sqlStmtUpdateEntry).Exec(entry.Name, entry.Message, entry.Website, entry.HideWebsite, entry.ID)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
tx.Commit()
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (d *SQLiteDatabase) DeleteEntry(entryID int64) error {
|
||||
tx, err := d.db.Begin()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer tx.Rollback()
|
||||
|
||||
if _, err = tx.Stmt(sqlStmtDeleteEntry).Exec(entryID); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
tx.Commit()
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (d *SQLiteDatabase) NewReply(reply *Reply) error {
|
||||
tx, err := d.db.Begin()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer tx.Rollback()
|
||||
|
||||
_, err = tx.Stmt(sqlStmtNewReply).Exec(reply.ID, reply.Created.UTC().Unix(), reply.Message)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
tx.Commit()
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (d *SQLiteDatabase) EditReply(reply *Reply) error {
|
||||
tx, err := d.db.Begin()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer tx.Rollback()
|
||||
|
||||
_, err = tx.Stmt(sqlStmtUpdateReply).Exec(reply.Message, reply.ID)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
tx.Commit()
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (d *SQLiteDatabase) DeleteReply(entryID int64) error {
|
||||
tx, err := d.db.Begin()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer tx.Rollback()
|
||||
|
||||
if _, err = tx.Stmt(sqlStmtDeleteReply).Exec(entryID); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
tx.Commit()
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (d *SQLiteDatabase) Close() error {
|
||||
sqlStmtCount.Close()
|
||||
sqlStmtDeleteEntry.Close()
|
||||
sqlStmtDeleteReply.Close()
|
||||
sqlStmtGetAll.Close()
|
||||
sqlStmtNewEntry.Close()
|
||||
sqlStmtNewReply.Close()
|
||||
sqlStmtUpdateEntry.Close()
|
||||
sqlStmtUpdateReply.Close()
|
||||
|
||||
return d.db.Close()
|
||||
}
|
||||
|
||||
func sqliteDSN(filePath string) string {
|
||||
return fmt.Sprintf("file:%s?_journal=WAL&_mutex=full", filePath)
|
||||
}
|
@ -1,10 +1,9 @@
|
||||
package sqlite_test
|
||||
package guestbook_test
|
||||
|
||||
import (
|
||||
"testing"
|
||||
|
||||
"git.arav.su/Arav/justguestbook/database/sqlite"
|
||||
"git.arav.su/Arav/justguestbook/guestbook"
|
||||
guestbook "git.arav.su/Arav/justguestbook"
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
@ -14,7 +13,7 @@ const (
|
||||
)
|
||||
|
||||
func genTestDB() (db guestbook.Guestbook, err error) {
|
||||
db, err = sqlite.New(":memory:")
|
||||
db, err = guestbook.NewSQLiteDB(":memory:")
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "failed to init DB")
|
||||
}
|
@ -5,6 +5,25 @@ import (
|
||||
"time"
|
||||
)
|
||||
|
||||
const DateFormat = "2006-01-02 15:04:05"
|
||||
|
||||
type Reply struct {
|
||||
ID int64 `json:"-"`
|
||||
Created time.Time `json:"created,omitempty"`
|
||||
Message string `json:"message"`
|
||||
}
|
||||
|
||||
func NewReply(entryID int64, message string) (*Reply, error) {
|
||||
if message == "" {
|
||||
return nil, errors.New("empty message field")
|
||||
}
|
||||
|
||||
return &Reply{
|
||||
ID: entryID,
|
||||
Created: time.Now().UTC(),
|
||||
Message: message}, nil
|
||||
}
|
||||
|
||||
type Entry struct {
|
||||
ID int64 `json:"entry_id"`
|
||||
Created time.Time `json:"created"`
|
||||
@ -27,3 +46,15 @@ func NewEntry(name, message, website string, hideWebsite bool) (*Entry, error) {
|
||||
HideWebsite: hideWebsite,
|
||||
Message: message}, nil
|
||||
}
|
||||
|
||||
type Guestbook interface {
|
||||
Entries(page, pageSize int64) ([]*Entry, error)
|
||||
Count() (int64, error)
|
||||
NewEntry(entry *Entry) error
|
||||
EditEntry(entry *Entry) error
|
||||
DeleteEntry(entryID int64) error
|
||||
NewReply(reply *Reply) error
|
||||
EditReply(reply *Reply) error
|
||||
DeleteReply(entryID int64) error
|
||||
Close() error
|
||||
}
|
@ -1,15 +0,0 @@
|
||||
package guestbook
|
||||
|
||||
const DateFormat = "2006-01-02 15:04:05"
|
||||
|
||||
type Guestbook interface {
|
||||
Entries(page, pageSize int64) ([]*Entry, error)
|
||||
Count() (int64, error)
|
||||
NewEntry(entry *Entry) error
|
||||
EditEntry(entry *Entry) error
|
||||
DeleteEntry(entryID int64) error
|
||||
NewReply(reply *Reply) error
|
||||
EditReply(reply *Reply) error
|
||||
DeleteReply(entryID int64) error
|
||||
Close() error
|
||||
}
|
@ -1,23 +0,0 @@
|
||||
package guestbook
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"time"
|
||||
)
|
||||
|
||||
type Reply struct {
|
||||
ID int64 `json:"-"`
|
||||
Created time.Time `json:"created,omitempty"`
|
||||
Message string `json:"message"`
|
||||
}
|
||||
|
||||
func NewReply(entryID int64, message string) (*Reply, error) {
|
||||
if message == "" {
|
||||
return nil, errors.New("empty reply field")
|
||||
}
|
||||
|
||||
return &Reply{
|
||||
ID: entryID,
|
||||
Created: time.Now().UTC(),
|
||||
Message: message}, nil
|
||||
}
|
4
sqlite_queries/entryNew.sql
Normal file
4
sqlite_queries/entryNew.sql
Normal file
@ -0,0 +1,4 @@
|
||||
INSERT INTO `entry`
|
||||
(`created`, `name`, `message`, `website`, `hide_website`)
|
||||
VALUES
|
||||
(?, ?, ?, ?, ?);
|
7
sqlite_queries/entryUpdate.sql
Normal file
7
sqlite_queries/entryUpdate.sql
Normal file
@ -0,0 +1,7 @@
|
||||
UPDATE OR REPLACE `entry`
|
||||
SET
|
||||
`name` = ?,
|
||||
`message` = ?,
|
||||
`website` = ?,
|
||||
`hide_website` = ?
|
||||
WHERE `entry_id` = ?;
|
4
sqlite_queries/replyUpdate.sql
Normal file
4
sqlite_queries/replyUpdate.sql
Normal file
@ -0,0 +1,4 @@
|
||||
UPDATE OR REPLACE `reply`
|
||||
SET
|
||||
`message` = ?
|
||||
WHERE `entry_id` = ?;
|
22
sqlite_queries/schema.sql
Normal file
22
sqlite_queries/schema.sql
Normal file
@ -0,0 +1,22 @@
|
||||
-- SQLite3
|
||||
CREATE TABLE IF NOT EXISTS `entry` (
|
||||
`entry_id` INTEGER NOT NULL,
|
||||
`created` INTEGER NOT NULL,
|
||||
`name` TEXT NOT NULL,
|
||||
`message` TEXT NOT NULL,
|
||||
`website` TEXT NOT NULL,
|
||||
`hide_website` INTEGER NOT NULL DEFAULT TRUE,
|
||||
PRIMARY KEY (`entry_id`) );
|
||||
|
||||
CREATE INDEX IF NOT EXISTS `entry_created_idx`
|
||||
ON `entry` (`created`);
|
||||
|
||||
CREATE TABLE IF NOT EXISTS `reply` (
|
||||
`entry_id` INTEGER NOT NULL,
|
||||
`created` INTEGER NOT NULL,
|
||||
`message` TEXT NOT NULL,
|
||||
PRIMARY KEY (`entry_id`),
|
||||
FOREIGN KEY (`entry_id`)
|
||||
REFERENCES `entry` (`entry_id`)
|
||||
ON DELETE CASCADE
|
||||
ON UPDATE CASCADE );
|
Loading…
Reference in New Issue
Block a user