323 lines
8.3 KiB
Go
323 lines
8.3 KiB
Go
// Copyright 2017 Frédéric Guillot. All rights reserved.
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// Use of this source code is governed by the Apache 2.0
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// license that can be found in the LICENSE file.
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package storage // import "miniflux.app/storage"
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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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"time"
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"miniflux.app/model"
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"miniflux.app/timer"
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"miniflux.app/timezone"
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)
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// FeedExists checks if the given feed exists.
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func (s *Storage) FeedExists(userID, feedID int64) bool {
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defer timer.ExecutionTime(time.Now(), fmt.Sprintf("[Storage:FeedExists] userID=%d, feedID=%d", userID, feedID))
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var result int
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query := `SELECT count(*) as c FROM feeds WHERE user_id=$1 AND id=$2`
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s.db.QueryRow(query, userID, feedID).Scan(&result)
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return result >= 1
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}
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// FeedURLExists checks if feed URL already exists.
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func (s *Storage) FeedURLExists(userID int64, feedURL string) bool {
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defer timer.ExecutionTime(time.Now(), fmt.Sprintf("[Storage:FeedURLExists] userID=%d, feedURL=%s", userID, feedURL))
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var result int
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query := `SELECT count(*) as c FROM feeds WHERE user_id=$1 AND feed_url=$2`
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s.db.QueryRow(query, userID, feedURL).Scan(&result)
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return result >= 1
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}
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// CountFeeds returns the number of feeds that belongs to the given user.
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func (s *Storage) CountFeeds(userID int64) int {
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var result int
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err := s.db.QueryRow(`SELECT count(*) FROM feeds WHERE user_id=$1`, userID).Scan(&result)
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if err != nil {
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return 0
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}
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return result
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}
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// CountErrorFeeds returns the number of feeds with parse errors that belong to the given user.
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func (s *Storage) CountErrorFeeds(userID int64) int {
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var result int
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err := s.db.QueryRow(`SELECT count(*) FROM feeds WHERE user_id=$1 AND parsing_error_count>=$2`, userID, maxParsingError).Scan(&result)
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if err != nil {
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return 0
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}
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return result
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}
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// Feeds returns all feeds of the given user.
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func (s *Storage) Feeds(userID int64) (model.Feeds, error) {
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defer timer.ExecutionTime(time.Now(), fmt.Sprintf("[Storage:Feeds] userID=%d", userID))
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feeds := make(model.Feeds, 0)
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query := `SELECT
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f.id, f.feed_url, f.site_url, f.title, f.etag_header, f.last_modified_header,
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f.user_id, f.checked_at at time zone u.timezone,
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f.parsing_error_count, f.parsing_error_msg,
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f.scraper_rules, f.rewrite_rules, f.crawler, f.user_agent,
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f.username, f.password,
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f.category_id, c.title as category_title,
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fi.icon_id,
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u.timezone
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FROM feeds f
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LEFT JOIN categories c ON c.id=f.category_id
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LEFT JOIN feed_icons fi ON fi.feed_id=f.id
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LEFT JOIN users u ON u.id=f.user_id
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WHERE f.user_id=$1
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ORDER BY f.parsing_error_count DESC, lower(f.title) ASC`
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rows, err := s.db.Query(query, userID)
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if err != nil {
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return nil, fmt.Errorf("unable to fetch feeds: %v", err)
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}
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defer rows.Close()
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for rows.Next() {
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var feed model.Feed
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var iconID interface{}
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var tz string
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feed.Category = &model.Category{UserID: userID}
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err := rows.Scan(
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&feed.ID,
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&feed.FeedURL,
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&feed.SiteURL,
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&feed.Title,
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&feed.EtagHeader,
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&feed.LastModifiedHeader,
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&feed.UserID,
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&feed.CheckedAt,
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&feed.ParsingErrorCount,
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&feed.ParsingErrorMsg,
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&feed.ScraperRules,
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&feed.RewriteRules,
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&feed.Crawler,
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&feed.UserAgent,
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&feed.Username,
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&feed.Password,
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&feed.Category.ID,
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&feed.Category.Title,
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&iconID,
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&tz,
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)
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if err != nil {
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return nil, fmt.Errorf("unable to fetch feeds row: %v", err)
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}
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if iconID != nil {
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feed.Icon = &model.FeedIcon{FeedID: feed.ID, IconID: iconID.(int64)}
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}
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feed.CheckedAt = timezone.Convert(tz, feed.CheckedAt)
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feeds = append(feeds, &feed)
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}
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return feeds, nil
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}
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// FeedByID returns a feed by the ID.
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func (s *Storage) FeedByID(userID, feedID int64) (*model.Feed, error) {
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defer timer.ExecutionTime(time.Now(), fmt.Sprintf("[Storage:FeedByID] feedID=%d", feedID))
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var feed model.Feed
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var iconID interface{}
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var tz string
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feed.Category = &model.Category{UserID: userID}
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query := `
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SELECT
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f.id, f.feed_url, f.site_url, f.title, f.etag_header, f.last_modified_header,
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f.user_id, f.checked_at at time zone u.timezone,
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f.parsing_error_count, f.parsing_error_msg,
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f.scraper_rules, f.rewrite_rules, f.crawler, f.user_agent,
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f.username, f.password,
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f.category_id, c.title as category_title,
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fi.icon_id,
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u.timezone
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FROM feeds f
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LEFT JOIN categories c ON c.id=f.category_id
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LEFT JOIN feed_icons fi ON fi.feed_id=f.id
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LEFT JOIN users u ON u.id=f.user_id
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WHERE f.user_id=$1 AND f.id=$2`
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err := s.db.QueryRow(query, userID, feedID).Scan(
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&feed.ID,
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&feed.FeedURL,
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&feed.SiteURL,
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&feed.Title,
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&feed.EtagHeader,
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&feed.LastModifiedHeader,
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&feed.UserID,
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&feed.CheckedAt,
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&feed.ParsingErrorCount,
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&feed.ParsingErrorMsg,
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&feed.ScraperRules,
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&feed.RewriteRules,
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&feed.Crawler,
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&feed.UserAgent,
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&feed.Username,
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&feed.Password,
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&feed.Category.ID,
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&feed.Category.Title,
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&iconID,
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&tz,
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)
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switch {
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case err == sql.ErrNoRows:
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return nil, nil
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case err != nil:
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return nil, fmt.Errorf("unable to fetch feed #%d: %v", feedID, err)
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}
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if iconID != nil {
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feed.Icon = &model.FeedIcon{FeedID: feed.ID, IconID: iconID.(int64)}
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}
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feed.CheckedAt = timezone.Convert(tz, feed.CheckedAt)
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return &feed, nil
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}
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// CreateFeed creates a new feed.
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func (s *Storage) CreateFeed(feed *model.Feed) error {
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defer timer.ExecutionTime(time.Now(), fmt.Sprintf("[Storage:CreateFeed] feedURL=%s", feed.FeedURL))
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sql := `
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INSERT INTO feeds
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(feed_url, site_url, title, category_id, user_id, etag_header, last_modified_header, crawler, user_agent, username, password)
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11)
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RETURNING id
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`
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err := s.db.QueryRow(
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sql,
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feed.FeedURL,
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feed.SiteURL,
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feed.Title,
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feed.Category.ID,
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feed.UserID,
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feed.EtagHeader,
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feed.LastModifiedHeader,
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feed.Crawler,
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feed.UserAgent,
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feed.Username,
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feed.Password,
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).Scan(&feed.ID)
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if err != nil {
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return fmt.Errorf("unable to create feed %q: %v", feed.FeedURL, err)
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}
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for i := 0; i < len(feed.Entries); i++ {
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feed.Entries[i].FeedID = feed.ID
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feed.Entries[i].UserID = feed.UserID
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err := s.createEntry(feed.Entries[i])
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if err != nil {
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return err
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}
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}
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return nil
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}
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// UpdateFeed updates an existing feed.
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func (s *Storage) UpdateFeed(feed *model.Feed) (err error) {
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defer timer.ExecutionTime(time.Now(), fmt.Sprintf("[Storage:UpdateFeed] feedURL=%s", feed.FeedURL))
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query := `UPDATE feeds SET
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feed_url=$1, site_url=$2, title=$3, category_id=$4, etag_header=$5, last_modified_header=$6, checked_at=$7,
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parsing_error_msg=$8, parsing_error_count=$9, scraper_rules=$10, rewrite_rules=$11, crawler=$12, user_agent=$13,
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username=$14, password=$15
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WHERE id=$16 AND user_id=$17`
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_, err = s.db.Exec(query,
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feed.FeedURL,
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feed.SiteURL,
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feed.Title,
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feed.Category.ID,
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feed.EtagHeader,
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feed.LastModifiedHeader,
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feed.CheckedAt,
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feed.ParsingErrorMsg,
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feed.ParsingErrorCount,
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feed.ScraperRules,
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feed.RewriteRules,
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feed.Crawler,
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feed.UserAgent,
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feed.Username,
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feed.Password,
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feed.ID,
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feed.UserID,
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)
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if err != nil {
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return fmt.Errorf("unable to update feed #%d (%s): %v", feed.ID, feed.FeedURL, err)
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}
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return nil
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}
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// UpdateFeedError updates feed errors.
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func (s *Storage) UpdateFeedError(feed *model.Feed) (err error) {
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defer timer.ExecutionTime(time.Now(), fmt.Sprintf("[Storage:UpdateFeedError] feedID=%d", feed.ID))
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query := `
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UPDATE feeds
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SET
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parsing_error_msg=$1,
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parsing_error_count=$2,
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checked_at=$3
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WHERE id=$4 AND user_id=$5`
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_, err = s.db.Exec(query,
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feed.ParsingErrorMsg,
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feed.ParsingErrorCount,
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feed.CheckedAt,
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feed.ID,
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feed.UserID,
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)
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if err != nil {
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return fmt.Errorf("unable to update feed error #%d (%s): %v", feed.ID, feed.FeedURL, err)
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}
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return nil
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}
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// RemoveFeed removes a feed.
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func (s *Storage) RemoveFeed(userID, feedID int64) error {
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defer timer.ExecutionTime(time.Now(), fmt.Sprintf("[Storage:RemoveFeed] userID=%d, feedID=%d", userID, feedID))
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result, err := s.db.Exec("DELETE FROM feeds WHERE id = $1 AND user_id = $2", feedID, userID)
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if err != nil {
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return fmt.Errorf("unable to remove feed #%d: %v", feedID, err)
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}
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count, err := result.RowsAffected()
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if err != nil {
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return fmt.Errorf("unable to remove feed #%d: %v", feedID, err)
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}
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if count == 0 {
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return errors.New("no feed has been removed")
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}
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return nil
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}
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// ResetFeedErrors removes all feed errors.
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func (s *Storage) ResetFeedErrors() error {
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_, err := s.db.Exec(`UPDATE feeds SET parsing_error_count=0, parsing_error_msg=''`)
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return err
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}
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