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package v2stat
import (
"context"
"database/sql"
"strings"
"time"
"github.com/sirupsen/logrus"
"go.rikki.moe/v2stat/command"
"google.golang.org/grpc"
)
type V2Stat struct {
logger *logrus.Logger
db *sql.DB
conn *grpc.ClientConn
stat command.StatsServiceClient
}
func NewV2Stat(logger *logrus.Logger, db *sql.DB, conn *grpc.ClientConn) *V2Stat {
return &V2Stat{
logger: logger,
db: db,
conn: conn,
stat: command.NewStatsServiceClient(conn),
}
}
func (v *V2Stat) Close() {
if v.db != nil {
v.db.Close()
}
if v.conn != nil {
v.conn.Close()
}
}
func (v *V2Stat) SetConn(conn *grpc.ClientConn) {
if v.conn != nil {
v.conn.Close()
}
v.conn = conn
v.stat = command.NewStatsServiceClient(conn)
}
func (v *V2Stat) InitDB() error {
stmts := []string{
`CREATE TABLE IF NOT EXISTS conn (
id INTEGER PRIMARY KEY AUTOINCREMENT,
type INTEGER NOT NULL,
name TEXT NOT NULL,
UNIQUE (type, name)
);`,
`CREATE TABLE IF NOT EXISTS stats (
id INTEGER PRIMARY KEY AUTOINCREMENT,
conn_id INTEGER NOT NULL,
timestamp INTEGER NOT NULL,
traffic INTEGER NOT NULL,
direction INTEGER NOT NULL,
FOREIGN KEY (conn_id) REFERENCES conn (id)
ON DELETE CASCADE
ON UPDATE CASCADE
);`,
`CREATE INDEX IF NOT EXISTS idx_conn_id ON stats (conn_id);`,
`CREATE INDEX IF NOT EXISTS idx_timestamp ON stats (timestamp);`,
}
for _, stmt := range stmts {
if _, err := v.db.Exec(stmt); err != nil {
return err
}
}
return nil
}
func (v *V2Stat) RecordNow(ctx context.Context) error {
resp, err := v.stat.QueryStats(ctx, &command.QueryStatsRequest{
Reset_: true,
})
if err != nil {
v.logger.Errorf("Failed to query stats: %v", err)
return err
}
tx, err := v.db.Begin()
if err != nil {
v.logger.Errorf("Failed to begin transaction: %v", err)
return err
}
defer tx.Rollback() // safe to call even if already committed
insertConnStmt, err := tx.Prepare(`INSERT OR IGNORE INTO conn (type, name) VALUES (?, ?)`)
if err != nil {
v.logger.Errorf("Failed to prepare conn insert statement: %v", err)
return err
}
defer insertConnStmt.Close()
selectConnIDStmt, err := tx.Prepare(`SELECT id FROM conn WHERE type = ? AND name = ?`)
if err != nil {
v.logger.Errorf("Failed to prepare conn select statement: %v", err)
return err
}
defer selectConnIDStmt.Close()
insertStatsStmt, err := tx.Prepare(`
INSERT INTO stats (conn_id, timestamp, traffic, direction)
VALUES (?, ?, ?, ?)
`)
if err != nil {
v.logger.Errorf("Failed to prepare stats insert statement: %v", err)
return err
}
defer insertStatsStmt.Close()
for _, stat := range resp.Stat {
connType, connName, direction, ok := parseStatKey(stat.Name)
if !ok {
v.logger.Warnf("Skipping unrecognized stat key: %s", stat.Name)
continue
}
if _, err := insertConnStmt.Exec(connType, connName); err != nil {
v.logger.Errorf("Failed to insert conn: %v", err)
continue
}
var connID int
err = selectConnIDStmt.QueryRow(connType, connName).Scan(&connID)
if err != nil {
v.logger.Errorf("Failed to retrieve conn_id: %v", err)
continue
}
timeNow := time.Now().Unix()
if _, err := insertStatsStmt.Exec(connID, timeNow, stat.Value, direction); err != nil {
v.logger.Errorf("Failed to insert stats: %v", err)
continue
}
v.logger.Infof("Inserted stats: conn_id=%d, timestamp=%d, traffic=%d, direction=%d", connID, timeNow, stat.Value, direction)
}
if err := tx.Commit(); err != nil {
v.logger.Errorf("Failed to commit transaction: %v", err)
return err
}
return nil
}
func parseStatKey(key string) (connType ConnectionType, connName string, direction TrafficDirection, ok bool) {
parts := strings.Split(key, ">>>")
if len(parts) != 4 || parts[2] != "traffic" {
return 0, "", 0, false
}
switch parts[0] {
case "user":
connType = ConnTypeUser
case "inbound":
connType = ConnTypeInbound
case "outbound":
connType = ConnTypeOutbound
default:
return 0, "", 0, false
}
connName = parts[1]
switch parts[3] {
case "downlink":
direction = DirectionDownlink
case "uplink":
direction = DirectionUplink
default:
return 0, "", 0, false
}
return connType, connName, direction, true
}
func (v *V2Stat) QueryConn() ([]ConnInfo, error) {
rows, err := v.db.Query("SELECT type, name FROM conn")
if err != nil {
return nil, err
}
defer rows.Close()
var conns []ConnInfo
for rows.Next() {
var conn ConnInfo
if err := rows.Scan(&conn.Type, &conn.Name); err != nil {
return nil, err
}
conns = append(conns, conn)
}
return conns, nil
}
func (v *V2Stat) QueryStatsHourly(conn *ConnInfo) ([]TrafficStat, error) {
rows, err := v.db.Query(`
SELECT
strftime('%Y-%m-%d %H:00:00', datetime(s.timestamp, 'unixepoch', '+8 hours')) AS time,
SUM(CASE WHEN s.direction = 0 THEN s.traffic ELSE 0 END) AS downlink,
SUM(CASE WHEN s.direction = 1 THEN s.traffic ELSE 0 END) AS uplink
FROM stats s
JOIN conn c ON s.conn_id = c.id
WHERE c.type = ? AND c.name = ?
GROUP BY time
ORDER BY time;
`, conn.Type, conn.Name)
if err != nil {
return nil, err
}
defer rows.Close()
var stats []TrafficStat
for rows.Next() {
var s TrafficStat
if err := rows.Scan(&s.Time, &s.Downlink, &s.Uplink); err != nil {
panic(err)
}
stats = append(stats, s)
}
if err := rows.Err(); err != nil {
return nil, err
}
return stats, nil
}
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