81 lines
1.9 KiB
Go
81 lines
1.9 KiB
Go
package common
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import (
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"database/sql"
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"../query_gen/lib"
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)
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var IPSearch IPSearcher
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type IPSearcher interface {
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Lookup(ip string) (uids []int, err error)
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}
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type DefaultIPSearcher struct {
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searchUsers *sql.Stmt
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searchTopics *sql.Stmt
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searchReplies *sql.Stmt
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searchUsersReplies *sql.Stmt
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}
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// NewDefaultIPSearcher gives you a new instance of DefaultIPSearcher
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func NewDefaultIPSearcher() (*DefaultIPSearcher, error) {
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acc := qgen.Builder.Accumulator()
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return &DefaultIPSearcher{
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searchUsers: acc.Select("users").Columns("uid").Where("last_ip = ?").Prepare(),
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searchTopics: acc.Select("users").Columns("uid").InQ("uid", acc.Select("topics").Columns("createdBy").Where("ipaddress = ?")).Prepare(),
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searchReplies: acc.Select("users").Columns("uid").InQ("uid", acc.Select("replies").Columns("createdBy").Where("ipaddress = ?")).Prepare(),
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searchUsersReplies: acc.Select("users").Columns("uid").InQ("uid", acc.Select("users_replies").Columns("createdBy").Where("ipaddress = ?")).Prepare(),
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}, acc.FirstError()
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}
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func (searcher *DefaultIPSearcher) Lookup(ip string) (uids []int, err error) {
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var uid int
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var reqUserList = make(map[int]bool)
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var runQuery = func(stmt *sql.Stmt) error {
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rows, err := stmt.Query(ip)
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if err != nil {
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return err
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}
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defer rows.Close()
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for rows.Next() {
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err := rows.Scan(&uid)
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if err != nil {
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return err
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}
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reqUserList[uid] = true
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}
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return rows.Err()
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}
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err = runQuery(searcher.searchUsers)
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if err != nil {
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return uids, err
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}
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err = runQuery(searcher.searchTopics)
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if err != nil {
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return uids, err
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}
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err = runQuery(searcher.searchReplies)
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if err != nil {
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return uids, err
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}
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err = runQuery(searcher.searchUsersReplies)
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if err != nil {
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return uids, err
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}
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// Convert the user ID map to a slice, then bulk load the users
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uids = make([]int, len(reqUserList))
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var i int
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for userID := range reqUserList {
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uids[i] = userID
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i++
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}
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return uids, nil
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}
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