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Copy pathfeed.go
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439 lines (388 loc) · 11.1 KB
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// Copyright 2017 Frédéric Guillot. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
package storage // import "miniflux.app/storage"
import (
"database/sql"
"errors"
"fmt"
"runtime"
"sort"
"miniflux.app/config"
"miniflux.app/logger"
"miniflux.app/model"
)
type byStateAndName struct{ f model.Feeds }
func (l byStateAndName) Len() int { return len(l.f) }
func (l byStateAndName) Swap(i, j int) { l.f[i], l.f[j] = l.f[j], l.f[i] }
func (l byStateAndName) Less(i, j int) bool {
// disabled test first, since we don't care about errors if disabled
if l.f[i].Disabled != l.f[j].Disabled {
return l.f[j].Disabled
}
if l.f[i].ParsingErrorCount != l.f[j].ParsingErrorCount {
return l.f[i].ParsingErrorCount > l.f[j].ParsingErrorCount
}
if l.f[i].UnreadCount != l.f[j].UnreadCount {
return l.f[i].UnreadCount > l.f[j].UnreadCount
}
return l.f[i].Title < l.f[j].Title
}
// FeedExists checks if the given feed exists.
func (s *Storage) FeedExists(userID, feedID int64) bool {
var result bool
query := `SELECT true FROM feeds WHERE user_id=$1 AND id=$2`
s.db.QueryRow(query, userID, feedID).Scan(&result)
return result
}
// FeedURLExists checks if feed URL already exists.
func (s *Storage) FeedURLExists(userID int64, feedURL string) bool {
var result bool
query := `SELECT true FROM feeds WHERE user_id=$1 AND feed_url=$2`
s.db.QueryRow(query, userID, feedURL).Scan(&result)
return result
}
// AnotherFeedURLExists checks if the user a duplicated feed.
func (s *Storage) AnotherFeedURLExists(userID, feedID int64, feedURL string) bool {
var result bool
query := `SELECT true FROM feeds WHERE id <> $1 AND user_id=$2 AND feed_url=$3`
s.db.QueryRow(query, feedID, userID, feedURL).Scan(&result)
return result
}
// CountAllFeeds returns the number of feeds in the database.
func (s *Storage) CountAllFeeds() map[string]int64 {
rows, err := s.db.Query(`SELECT disabled, count(*) FROM feeds GROUP BY disabled`)
if err != nil {
return nil
}
defer rows.Close()
results := make(map[string]int64)
results["enabled"] = 0
results["disabled"] = 0
for rows.Next() {
var disabled bool
var count int64
if err := rows.Scan(&disabled, &count); err != nil {
continue
}
if disabled {
results["disabled"] = count
} else {
results["enabled"] = count
}
}
results["total"] = results["disabled"] + results["enabled"]
return results
}
// CountFeeds returns the number of feeds that belongs to the given user.
func (s *Storage) CountFeeds(userID int64) int {
var result int
err := s.db.QueryRow(`SELECT count(*) FROM feeds WHERE user_id=$1`, userID).Scan(&result)
if err != nil {
return 0
}
return result
}
// CountUserFeedsWithErrors returns the number of feeds with parsing errors that belong to the given user.
func (s *Storage) CountUserFeedsWithErrors(userID int64) int {
pollingParsingErrorLimit := config.Opts.PollingParsingErrorLimit()
if pollingParsingErrorLimit <= 0 {
pollingParsingErrorLimit = 1
}
query := `SELECT count(*) FROM feeds WHERE user_id=$1 AND parsing_error_count >= $2`
var result int
err := s.db.QueryRow(query, userID, pollingParsingErrorLimit).Scan(&result)
if err != nil {
return 0
}
return result
}
// CountAllFeedsWithErrors returns the number of feeds with parsing errors.
func (s *Storage) CountAllFeedsWithErrors() int {
pollingParsingErrorLimit := config.Opts.PollingParsingErrorLimit()
if pollingParsingErrorLimit <= 0 {
pollingParsingErrorLimit = 1
}
query := `SELECT count(*) FROM feeds WHERE parsing_error_count >= $1`
var result int
err := s.db.QueryRow(query, pollingParsingErrorLimit).Scan(&result)
if err != nil {
return 0
}
return result
}
// Feeds returns all feeds that belongs to the given user.
func (s *Storage) Feeds(userID int64) (model.Feeds, error) {
builder := NewFeedQueryBuilder(s, userID)
builder.WithOrder(model.DefaultFeedSorting)
builder.WithDirection(model.DefaultFeedSortingDirection)
return builder.GetFeeds()
}
func getFeedsSorted(builder *FeedQueryBuilder) (model.Feeds, error) {
result, err := builder.GetFeeds()
if err == nil {
sort.Sort(byStateAndName{result})
return result, nil
}
return result, err
}
// FeedsWithCounters returns all feeds of the given user with counters of read and unread entries.
func (s *Storage) FeedsWithCounters(userID int64) (model.Feeds, error) {
builder := NewFeedQueryBuilder(s, userID)
builder.WithCounters()
builder.WithOrder(model.DefaultFeedSorting)
builder.WithDirection(model.DefaultFeedSortingDirection)
return getFeedsSorted(builder)
}
// Return read and unread count.
func (s *Storage) FetchCounters(userID int64) (model.FeedCounters, error) {
builder := NewFeedQueryBuilder(s, userID)
builder.WithCounters()
reads, unreads, err := builder.fetchFeedCounter()
return model.FeedCounters{ReadCounters: reads, UnreadCounters: unreads}, err
}
// FeedsByCategoryWithCounters returns all feeds of the given user/category with counters of read and unread entries.
func (s *Storage) FeedsByCategoryWithCounters(userID, categoryID int64) (model.Feeds, error) {
builder := NewFeedQueryBuilder(s, userID)
builder.WithCategoryID(categoryID)
builder.WithCounters()
builder.WithOrder(model.DefaultFeedSorting)
builder.WithDirection(model.DefaultFeedSortingDirection)
return getFeedsSorted(builder)
}
// WeeklyFeedEntryCount returns the weekly entry count for a feed.
func (s *Storage) WeeklyFeedEntryCount(userID, feedID int64) (int, error) {
query := `
SELECT
count(*)
FROM
entries
WHERE
entries.user_id=$1 AND
entries.feed_id=$2 AND
entries.published_at BETWEEN (now() - interval '1 week') AND now();
`
var weeklyCount int
err := s.db.QueryRow(query, userID, feedID).Scan(&weeklyCount)
switch {
case errors.Is(err, sql.ErrNoRows):
return 0, nil
case err != nil:
return 0, fmt.Errorf(`store: unable to fetch weekly count for feed #%d: %v`, feedID, err)
}
return weeklyCount, nil
}
// FeedByID returns a feed by the ID.
func (s *Storage) FeedByID(userID, feedID int64) (*model.Feed, error) {
builder := NewFeedQueryBuilder(s, userID)
builder.WithFeedID(feedID)
feed, err := builder.GetFeed()
switch {
case errors.Is(err, sql.ErrNoRows):
return nil, nil
case err != nil:
return nil, fmt.Errorf(`store: unable to fetch feed #%d: %v`, feedID, err)
}
return feed, nil
}
// CreateFeed creates a new feed.
func (s *Storage) CreateFeed(feed *model.Feed) error {
sql := `
INSERT INTO feeds (
feed_url,
site_url,
title,
category_id,
user_id,
etag_header,
last_modified_header,
crawler,
user_agent,
cookie,
username,
password,
disabled,
scraper_rules,
rewrite_rules,
blocklist_rules,
keeplist_rules,
ignore_http_cache,
allow_self_signed_certificates,
fetch_via_proxy,
hide_globally,
url_rewrite_rules
)
VALUES
($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18, $19, $20, $21, $22)
RETURNING
id
`
err := s.db.QueryRow(
sql,
feed.FeedURL,
feed.SiteURL,
feed.Title,
feed.Category.ID,
feed.UserID,
feed.EtagHeader,
feed.LastModifiedHeader,
feed.Crawler,
feed.UserAgent,
feed.Cookie,
feed.Username,
feed.Password,
feed.Disabled,
feed.ScraperRules,
feed.RewriteRules,
feed.BlocklistRules,
feed.KeeplistRules,
feed.IgnoreHTTPCache,
feed.AllowSelfSignedCertificates,
feed.FetchViaProxy,
feed.HideGlobally,
feed.UrlRewriteRules,
).Scan(&feed.ID)
if err != nil {
return fmt.Errorf(`store: unable to create feed %q: %v`, feed.FeedURL, err)
}
for i := 0; i < len(feed.Entries); i++ {
feed.Entries[i].FeedID = feed.ID
feed.Entries[i].UserID = feed.UserID
tx, err := s.db.Begin()
if err != nil {
return fmt.Errorf(`store: unable to start transaction: %v`, err)
}
if !s.entryExists(tx, feed.Entries[i]) {
if err := s.createEntry(tx, feed.Entries[i]); err != nil {
tx.Rollback()
return err
}
}
if err := tx.Commit(); err != nil {
return fmt.Errorf(`store: unable to commit transaction: %v`, err)
}
}
return nil
}
// UpdateFeed updates an existing feed.
func (s *Storage) UpdateFeed(feed *model.Feed) (err error) {
query := `
UPDATE
feeds
SET
feed_url=$1,
site_url=$2,
title=$3,
category_id=$4,
etag_header=$5,
last_modified_header=$6,
checked_at=$7,
parsing_error_msg=$8,
parsing_error_count=$9,
scraper_rules=$10,
rewrite_rules=$11,
blocklist_rules=$12,
keeplist_rules=$13,
crawler=$14,
user_agent=$15,
cookie=$16,
username=$17,
password=$18,
disabled=$19,
next_check_at=$20,
ignore_http_cache=$21,
allow_self_signed_certificates=$22,
fetch_via_proxy=$23,
hide_globally=$24,
url_rewrite_rules=$25
WHERE
id=$26 AND user_id=$27
`
_, err = s.db.Exec(query,
feed.FeedURL,
feed.SiteURL,
feed.Title,
feed.Category.ID,
feed.EtagHeader,
feed.LastModifiedHeader,
feed.CheckedAt,
feed.ParsingErrorMsg,
feed.ParsingErrorCount,
feed.ScraperRules,
feed.RewriteRules,
feed.BlocklistRules,
feed.KeeplistRules,
feed.Crawler,
feed.UserAgent,
feed.Cookie,
feed.Username,
feed.Password,
feed.Disabled,
feed.NextCheckAt,
feed.IgnoreHTTPCache,
feed.AllowSelfSignedCertificates,
feed.FetchViaProxy,
feed.HideGlobally,
feed.UrlRewriteRules,
feed.ID,
feed.UserID,
)
if err != nil {
return fmt.Errorf(`store: unable to update feed #%d (%s): %v`, feed.ID, feed.FeedURL, err)
}
return nil
}
// UpdateFeedError updates feed errors.
func (s *Storage) UpdateFeedError(feed *model.Feed) (err error) {
query := `
UPDATE
feeds
SET
parsing_error_msg=$1,
parsing_error_count=$2,
checked_at=$3,
next_check_at=$4
WHERE
id=$5 AND user_id=$6
`
_, err = s.db.Exec(query,
feed.ParsingErrorMsg,
feed.ParsingErrorCount,
feed.CheckedAt,
feed.NextCheckAt,
feed.ID,
feed.UserID,
)
if err != nil {
return fmt.Errorf(`store: unable to update feed error #%d (%s): %v`, feed.ID, feed.FeedURL, err)
}
return nil
}
// RemoveFeed removes a feed and all entries.
// This operation can takes time if the feed has lot of entries.
func (s *Storage) RemoveFeed(userID, feedID int64) error {
rows, err := s.db.Query(`SELECT id FROM entries WHERE user_id=$1 AND feed_id=$2`, userID, feedID)
if err != nil {
return fmt.Errorf(`store: unable to get user feed entries: %v`, err)
}
defer rows.Close()
for rows.Next() {
var entryID int64
if err := rows.Scan(&entryID); err != nil {
return fmt.Errorf(`store: unable to read user feed entry ID: %v`, err)
}
logger.Debug(`[FEED DELETION] Deleting entry #%d of feed #%d for user #%d (%d GoRoutines)`, entryID, feedID, userID, runtime.NumGoroutine())
if _, err := s.db.Exec(`DELETE FROM entries WHERE id=$1 AND user_id=$2`, entryID, userID); err != nil {
return fmt.Errorf(`store: unable to delete user feed entries #%d: %v`, entryID, err)
}
}
if _, err := s.db.Exec(`DELETE FROM feeds WHERE id=$1 AND user_id=$2`, feedID, userID); err != nil {
return fmt.Errorf(`store: unable to delete feed #%d: %v`, feedID, err)
}
return nil
}
// ResetFeedErrors removes all feed errors.
func (s *Storage) ResetFeedErrors() error {
_, err := s.db.Exec(`UPDATE feeds SET parsing_error_count=0, parsing_error_msg=''`)
return err
}