fleet/server/datastore/mysql/targets.go
2017-06-22 15:50:45 -04:00

59 lines
2.1 KiB
Go

package mysql
import (
"fmt"
"time"
"github.com/jmoiron/sqlx"
"github.com/kolide/fleet/server/kolide"
"github.com/pkg/errors"
)
func (d *Datastore) CountHostsInTargets(hostIDs []uint, labelIDs []uint, now time.Time) (kolide.TargetMetrics, error) {
// The logic in this function should remain synchronized with
// host.Status and GenerateHostStatusStatistics
if len(hostIDs) == 0 && len(labelIDs) == 0 {
// No need to query if no targets selected
return kolide.TargetMetrics{}, nil
}
sql := fmt.Sprintf(`
SELECT
COUNT(*) total,
COALESCE(SUM(CASE WHEN DATE_ADD(seen_time, INTERVAL 30 DAY) <= ? THEN 1 ELSE 0 END), 0) mia,
COALESCE(SUM(CASE WHEN DATE_ADD(seen_time, INTERVAL LEAST(distributed_interval, config_tls_refresh) + %d SECOND) <= ? AND DATE_ADD(seen_time, INTERVAL 30 DAY) >= ? THEN 1 ELSE 0 END), 0) offline,
COALESCE(SUM(CASE WHEN DATE_ADD(seen_time, INTERVAL LEAST(distributed_interval, config_tls_refresh) + %d SECOND) > ? THEN 1 ELSE 0 END), 0) online,
COALESCE(SUM(CASE WHEN DATE_ADD(created_at, INTERVAL 1 DAY) >= ? THEN 1 ELSE 0 END), 0) new
FROM hosts h
WHERE (id IN (?) OR (id IN (SELECT DISTINCT host_id FROM label_query_executions WHERE label_id IN (?) AND matches = 1)))
AND NOT deleted
`, kolide.OnlineIntervalBuffer, kolide.OnlineIntervalBuffer)
// Using -1 in the ID slices for the IN clause allows us to include the
// IN clause even if we have no IDs to use. -1 will not match the
// auto-increment IDs, and will also allow us to use the same query in
// all situations (no need to remove the clause when there are no values)
queryLabelIDs := []int{-1}
for _, id := range labelIDs {
queryLabelIDs = append(queryLabelIDs, int(id))
}
queryHostIDs := []int{-1}
for _, id := range hostIDs {
queryHostIDs = append(queryHostIDs, int(id))
}
query, args, err := sqlx.In(sql, now, now, now, now, now, queryHostIDs, queryLabelIDs)
if err != nil {
return kolide.TargetMetrics{}, errors.Wrap(err, "sqlx.In CountHostsInTargets")
}
res := kolide.TargetMetrics{}
err = d.db.Get(&res, query, args...)
if err != nil {
return kolide.TargetMetrics{}, errors.Wrap(err, "sqlx.Get CountHostsInTargets")
}
return res, nil
}