forked from marciotrindade/pgsqlog
/
main.go
272 lines (223 loc) · 5.42 KB
/
main.go
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package main
import (
"database/sql"
"github.com/lib/pq"
"io/ioutil"
"log"
"os"
"regexp"
"strings"
"sync"
)
const (
postgresConnection = "user=emailmarketing dbname=psqlog sslmode=disable"
runWithRoutines = true
gophers_count = 20
)
func main() {
if len(os.Args) < 2 {
log.Fatal("You need to set the filename\nexample: psqlog main.log")
}
lines := redFile(os.Args[1])
var waitGroup sync.WaitGroup
waitGroup.Add(gophers_count)
if runWithRoutines {
lines_count := len(lines)
partial_count := lines_count / gophers_count
for i := 0; i < gophers_count; i++ {
var finish int
start := i * partial_count
if i == (gophers_count - 1) {
finish = lines_count
} else {
finish = ((i + 1) * partial_count)
}
go gopher(i, lines[start:finish], &waitGroup)
}
} else {
gopher(gophers_count, lines, &waitGroup)
}
waitGroup.Wait()
}
func redFile(fileName string) []string {
content, err := ioutil.ReadFile(fileName)
if err != nil {
log.Fatal("Error:", err)
}
return strings.Split(string(content), "\n")
}
func gopher(i int, lines []string, waitGroup *sync.WaitGroup) {
log.Println("Starting:", i)
db := getConnection()
defer db.Close()
txn, err := db.Begin()
if err != nil {
log.Fatal(err)
}
stmt, err := txn.Prepare(pq.CopyIn("logs", "username", "database", "duration", "action", "table_name", "sql", "created_at"))
if err != nil {
log.Fatal(err)
}
for _, line := range lines {
parseLine(strings.ToLower(line), stmt)
}
_, err = stmt.Exec()
if err != nil {
log.Fatal(err)
}
err = stmt.Close()
if err != nil {
log.Fatal(err)
}
err = txn.Commit()
if err != nil {
log.Fatal(err)
}
db.Close()
log.Println("Finishing:", i)
waitGroup.Done()
}
func parseLine(line string, stmt *sql.Stmt) {
re := regexp.MustCompile(`([0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2}) brt \[[0-9]*\]: \[(.*?)\] user=(.*?),db=(.*?) log: duration: (.*?) ms (.*?): (.*)`)
matches := re.FindStringSubmatch(line)
if len(matches) > 0 {
username := matches[3]
database := matches[4]
duration := matches[5]
sql := strings.Trim(matches[7], " ")
action, table := parseSql(sql)
created_at := matches[1]
if action != "" && table != "" {
_, err := stmt.Exec(username, database, duration, action, table, sql, created_at)
if err != nil {
log.Fatal(err)
}
}
}
}
func parseSql(sql string) (string, string) {
var action string
var table string
re := regexp.MustCompile(`([a-z]*)(.*)`)
matches := re.FindStringSubmatch(sql)
switch matches[1] {
case "select":
action, table = parseSelect(sql)
case "update":
action, table = parseUpdate(sql)
case "insert":
action, table = parseInsert(sql)
case "copy":
action, table = parseCopy(sql)
case "delete":
action, table = parseDelete(sql)
case "create":
action, table = parseCreate(sql)
case "drop":
action, table = parseDrop(sql)
case "alter":
action, table = parseAlter(sql)
}
return action, table
}
func parseSelect(sql string) (string, string) {
var table string
action := "select"
re := regexp.MustCompile(`select(.*?)from "?([a-z0-9_\.]*)"?(.*)`)
matches := re.FindStringSubmatch(sql)
if len(matches) > 0 {
table = matches[2]
}
return action, table
}
func parseUpdate(sql string) (string, string) {
var table string
action := "update"
re := regexp.MustCompile(`update "?([a-z0-9_\.]*)"?(.*)`)
matches := re.FindStringSubmatch(sql)
if len(matches) > 0 {
table = matches[1]
}
return action, table
}
func parseInsert(sql string) (string, string) {
var table string
action := "insert"
re := regexp.MustCompile(`insert into "?([a-z0-9_\.]*)"?(.*)`)
matches := re.FindStringSubmatch(sql)
if len(matches) > 0 {
table = matches[1]
}
return action, table
}
func parseCopy(sql string) (string, string) {
var table string
action := "copy"
re := regexp.MustCompile(`copy "?([a-z0-9_\.]*)"?(.*)`)
matches := re.FindStringSubmatch(sql)
if len(matches) > 0 {
table = matches[1]
}
return action, table
}
func parseDelete(sql string) (string, string) {
var table string
action := "delete"
re := regexp.MustCompile(`delete from "?([[a-z0-9_\.]*)"?(.*)`)
matches := re.FindStringSubmatch(sql)
if len(matches) > 0 {
table = matches[1]
}
return action, table
}
func parseCreate(sql string) (string, string) {
var table string
var action string
re := regexp.MustCompile(`create +(table|index|unique index) "?([[a-z0-9_\.]*)"?(.*)`)
matches := re.FindStringSubmatch(sql)
if len(matches) > 0 {
table = matches[2]
switch matches[1] {
case "table":
action = "create table"
case "index":
action = "create index"
case "unique index":
action = "create index"
}
}
return action, table
}
func parseDrop(sql string) (string, string) {
var table string
var action string
re := regexp.MustCompile(`drop (table|schema)( if exists)? "?([[a-z0-9_\.]*)"?(.*)`)
matches := re.FindStringSubmatch(sql)
if len(matches) > 0 {
table = matches[3]
switch matches[1] {
case "table":
action = "drop table"
case "schema":
action = "drop schema"
}
}
return action, table
}
func parseAlter(sql string) (string, string) {
var table string
action := "alter table"
re := regexp.MustCompile(`alter table "?([[a-z0-9_\.]*)"?(.*)`)
matches := re.FindStringSubmatch(sql)
if len(matches) > 0 {
table = matches[1]
}
return action, table
}
func getConnection() *sql.DB {
connection, err := sql.Open("postgres", postgresConnection)
if err != nil {
log.Fatal("Error:", err)
}
return connection
}