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Add Prometheus exporter

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This commit is contained in:
Frédéric Guillot 2020-09-27 16:01:06 -07:00 • committed by Frédéric Guillot
parent 16b7b3bc3e
commit c394a61a4e
61 changed files with 809 additions and 96 deletions
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49
storage/feed.go
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@ -76,6 +76,37 @@ func (s *Storage) AnotherFeedURLExists(userID, feedID int64, feedURL string) boo
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
@ -87,9 +118,9 @@ func (s *Storage) CountFeeds(userID int64) int {
return result
}
// CountErrorFeeds returns the number of feeds with parse errors that belong to the given user.
func (s *Storage) CountErrorFeeds(userID int64) int {
query := `SELECT count(*) FROM feeds WHERE user_id=$1 AND parsing_error_count>=$2`
// CountUserFeedsWithErrors returns the number of feeds with parsing errors that belong to the given user.
func (s *Storage) CountUserFeedsWithErrors(userID int64) int {
query := `SELECT count(*) FROM feeds WHERE user_id=$1 AND parsing_error_count >= $2`
var result int
err := s.db.QueryRow(query, userID, maxParsingError).Scan(&result)
if err != nil {
@ -99,6 +130,18 @@ func (s *Storage) CountErrorFeeds(userID int64) int {
return result
}
// CountAllFeedsWithErrors returns the number of feeds with parsing errors.
func (s *Storage) CountAllFeedsWithErrors() int {
query := `SELECT count(*) FROM feeds WHERE parsing_error_count >= $1`
var result int
err := s.db.QueryRow(query, maxParsingError).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) {
return s.fetchFeeds(feedListQuery, "", userID)