fathom/count/referrers.go

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2016-12-24 08:00:45 +00:00
package count
import (
"github.com/dannyvankooten/ana/db"
)
// Referrers returns a point slice containing browser data per browser name
func Referrers(before int64, after int64, limit int, total float64) []Point {
// TODO: Calculate total instead of requiring it as a parameter.
stmt, err := db.Conn.Prepare(`
SELECT
a.value,
SUM(a.count) AS count
FROM archive a
WHERE a.metric = 'referrers' AND UNIX_TIMESTAMP(a.date) <= ? AND UNIX_TIMESTAMP(a.date) >= ?
GROUP BY a.value
ORDER BY count DESC
LIMIT ?`)
checkError(err)
defer stmt.Close()
rows, err := stmt.Query(before, after, limit)
checkError(err)
return newPointSlice(rows, total)
}
// CreateReferrerArchives aggregates screen data into daily totals
func CreateReferrerArchives() {
stmt, err := db.Conn.Prepare(`
SELECT
pv.referrer_url,
COUNT(DISTINCT(pv.visitor_id)) AS count,
DATE_FORMAT(pv.timestamp, "%Y-%m-%d") AS date_group
FROM pageviews pv
WHERE pv.referrer_url IS NOT NULL
AND pv.referrer_url != ''
AND NOT EXISTS(
SELECT a.id
FROM archive a
WHERE a.metric = 'referrers' AND a.date = DATE_FORMAT(pv.timestamp, "%Y-%m-%d")
)
GROUP BY date_group, pv.referrer_url`)
checkError(err)
defer stmt.Close()
rows, err := stmt.Query()
checkError(err)
defer rows.Close()
db.Conn.Exec("START TRANSACTION")
for rows.Next() {
a := Archive{
Metric: "referrers",
}
err = rows.Scan(&a.Value, &a.Count, &a.Date)
checkError(err)
a.Save(db.Conn)
}
db.Conn.Exec("COMMIT")
}