257 lines
7.1 KiB
Go
257 lines
7.1 KiB
Go
/*
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* Copyright (C) 2019 Philipp Haefelfinger (http://www.haefelfinger.ch/). All Rights Reserved.
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* This application is licensed under GPLv2. See the LICENSE file in the root directory of the project.
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*/
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package app
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//go:generate mockgen -destination=./datastore_mock_test.go -package=app git.haefelfinger.net/piwigo/PiwigoDirectoryUploader/internal/app ImageMetadataProvider
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import (
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"database/sql"
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"errors"
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"fmt"
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_ "github.com/mattn/go-sqlite3"
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"github.com/sirupsen/logrus"
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"time"
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)
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var ErrorRecordNotFound = errors.New("Record not found")
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type ImageMetaData struct {
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ImageId int
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PiwigoId int
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FullImagePath string
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Filename string
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Md5Sum string
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LastChange time.Time
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CategoryPath string
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CategoryId int
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UploadRequired bool
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DeleteRequired bool
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}
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func (img *ImageMetaData) String() string {
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return fmt.Sprintf("ImageMetaData{ImageId:%d, PiwigoId:%d, CategoryId:%d, RelPath:%s, File:%s, Md5:%s, Change:%sS, catpath:%s, UploadRequired: %t, DeleteRequired: %t}", img.ImageId, img.PiwigoId, img.CategoryId, img.FullImagePath, img.Filename, img.Md5Sum, img.LastChange.String(), img.CategoryPath, img.UploadRequired, img.DeleteRequired)
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}
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type ImageMetadataProvider interface {
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ImageMetadata(fullImagePath string) (ImageMetaData, error)
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ImageMetadataToUpload() ([]ImageMetaData, error)
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SaveImageMetadata(m ImageMetaData) error
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SavePiwigoIdAndUpdateUploadFlag(md5Sum string, piwigoId int) error
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}
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type localDataStore struct {
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connectionString string
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}
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func (d *localDataStore) Initialize(connectionString string) error {
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if connectionString == "" {
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return errors.New("connection string could not be empty.")
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}
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d.connectionString = connectionString
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db, err := d.openDatabase()
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if err != nil {
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return err
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}
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defer db.Close()
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err = d.createTablesIfNeeded(db)
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return err
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}
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func (d *localDataStore) ImageMetadata(fullImagePath string) (ImageMetaData, error) {
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logrus.Tracef("Query image metadata for file %s", fullImagePath)
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img := ImageMetaData{}
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db, err := d.openDatabase()
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if err != nil {
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return img, err
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}
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defer db.Close()
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stmt, err := db.Prepare("SELECT imageId, piwigoId, fullImagePath, fileName, md5sum, lastChanged, categoryPath, categoryId, uploadRequired, deleteRequired FROM image WHERE fullImagePath = ?")
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if err != nil {
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return img, err
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}
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rows, err := stmt.Query(fullImagePath)
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if err != nil {
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return img, err
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}
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defer rows.Close()
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if rows.Next() {
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err = ReadImageMetadataFromRow(rows, &img)
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if err != nil {
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return img, err
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}
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} else {
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return img, ErrorRecordNotFound
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}
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err = rows.Err()
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return img, err
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}
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func (d *localDataStore) ImageMetadataToUpload() ([]ImageMetaData, error) {
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logrus.Tracef("Query all image metadata that represent files queued to upload")
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db, err := d.openDatabase()
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if err != nil {
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return nil, err
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}
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defer db.Close()
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rows, err := db.Query("SELECT imageId, piwigoId, fullImagePath, fileName, md5sum, lastChanged, categoryPath, categoryId, uploadRequired, deleteRequired FROM image WHERE uploadRequired = 1")
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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images := []ImageMetaData{}
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for rows.Next() {
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img := &ImageMetaData{}
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err = ReadImageMetadataFromRow(rows, img)
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if err != nil {
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return nil, err
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}
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images = append(images, *img)
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}
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err = rows.Err()
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return images, err
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}
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func ReadImageMetadataFromRow(rows *sql.Rows, img *ImageMetaData) error {
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err := rows.Scan(&img.ImageId, &img.PiwigoId, &img.FullImagePath, &img.Filename, &img.Md5Sum, &img.LastChange, &img.CategoryPath, &img.CategoryId, &img.UploadRequired, &img.DeleteRequired)
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return err
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}
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func (d *localDataStore) SaveImageMetadata(img ImageMetaData) error {
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logrus.Tracef("Saving imagemetadata: %s", img.String())
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db, err := d.openDatabase()
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if err != nil {
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return err
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}
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defer db.Close()
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tx, err := db.Begin()
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if err != nil {
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return err
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}
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if img.ImageId <= 0 {
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err = d.insertImageMetaData(tx, img)
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} else {
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err = d.updateImageMetaData(tx, img)
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}
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if err != nil {
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logrus.Errorf("Rolling back transaction for metadata of %s", img.FullImagePath)
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errTx := tx.Rollback()
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if errTx != nil {
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logrus.Errorf("Rollback of transaction for metadata of %s failed!", img.FullImagePath)
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}
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return err
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}
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logrus.Tracef("Commiting metadata for image %s", img.String())
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return tx.Commit()
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}
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func (d *localDataStore) SavePiwigoIdAndUpdateUploadFlag(md5Sum string, piwigoId int) error {
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logrus.Tracef("Saving piwigo id %d for file with md5sum %s", piwigoId, md5Sum)
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db, err := d.openDatabase()
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if err != nil {
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return err
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}
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defer db.Close()
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tx, err := db.Begin()
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if err != nil {
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return err
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}
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uploadRequired := 1
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if piwigoId > 0 {
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uploadRequired = 0
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}
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stmt, err := tx.Prepare("UPDATE image SET piwigoId = ?, uploadRequired = ? WHERE md5sum = ?")
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if err != nil {
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return err
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}
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_, err = stmt.Exec(piwigoId, uploadRequired, md5Sum)
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if err != nil {
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return err
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}
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if err != nil {
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logrus.Errorf("Rolling back transaction for piwigo id update of file %s", md5Sum)
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errTx := tx.Rollback()
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if errTx != nil {
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logrus.Errorf("Rollback of transaction for piwigo id update of file %s failed!", md5Sum)
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}
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return err
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}
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logrus.Tracef("Commiting piwigo id %d for file with md5sum %s", piwigoId, md5Sum)
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return tx.Commit()
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}
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func (d *localDataStore) insertImageMetaData(tx *sql.Tx, data ImageMetaData) error {
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stmt, err := tx.Prepare("INSERT INTO image (piwigoId, fullImagePath, fileName, md5sum, lastChanged, categoryPath, categoryId, uploadRequired, deleteRequired) VALUES (?,?,?,?,?,?,?,?,?)")
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if err != nil {
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return err
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}
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_, err = stmt.Exec(data.PiwigoId, data.FullImagePath, data.Filename, data.Md5Sum, data.LastChange, data.CategoryPath, data.CategoryId, data.UploadRequired, data.DeleteRequired)
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return err
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}
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func (d *localDataStore) openDatabase() (*sql.DB, error) {
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db, err := sql.Open("sqlite3", d.connectionString)
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if err != nil {
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logrus.Warnf("Could not open database %s", d.connectionString)
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return nil, err
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}
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db.SetMaxOpenConns(1)
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return db, err
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}
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func (d *localDataStore) createTablesIfNeeded(db *sql.DB) error {
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_, err := db.Exec("CREATE TABLE IF NOT EXISTS image (" +
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"imageId INTEGER PRIMARY KEY," +
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"piwigoId INTEGER NULL," +
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"fullImagePath NVARCHAR(1000) NOT NULL," +
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"fileName NVARCHAR(255) NOT NULL," +
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"md5sum NVARCHAR(50) NOT NULL," +
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"lastChanged DATETIME NOT NULL," +
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"categoryPath NVARCHAR(1000) NOT NULL," +
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"categoryId INTEGER NULL," +
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"uploadRequired BIT NOT NULL," +
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"deleteRequired BIT NOT NULL" +
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");")
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if err != nil {
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return err
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}
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_, err = db.Exec("CREATE UNIQUE INDEX IF NOT EXISTS UX_ImageFullImagePath ON image (fullImagePath);")
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return err
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}
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func (d *localDataStore) updateImageMetaData(tx *sql.Tx, data ImageMetaData) error {
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stmt, err := tx.Prepare("UPDATE image SET piwigoId = ?, fullImagePath = ?, fileName = ?, md5sum = ?, lastChanged = ?, categoryPath = ?, categoryId = ?, uploadRequired = ?, deleteRequired = ? WHERE imageId = ?")
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if err != nil {
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return err
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}
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_, err = stmt.Exec(data.PiwigoId, data.FullImagePath, data.Filename, data.Md5Sum, data.LastChange, data.CategoryPath, data.CategoryId, data.UploadRequired, data.DeleteRequired, data.ImageId)
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return err
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}
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