AdGuardHome/internal/querylog/querylogfile.go
Ainar Garipov 7c35d208b1 Pull request: querylog: search clients by name, enrich http resp
Updates #1273.

Squashed commit of the following:

commit 55b78153b1b775c855e759011141bbbe6d4b962c
Author: Artem Baskal <a.baskal@adguard.com>
Date:   Fri Apr 2 16:55:39 2021 +0300

    Update client_info in case of null

commit 5c80c1438ed9d961af11617831b704d6ae15cc34
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Fri Apr 2 16:24:14 2021 +0300

    querylog: always set client_info

commit b48efd64d757cc0bcf5b34de22fdd0b0464d98a6
Merge: 4ed7eab5 23c9f528
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Fri Apr 2 16:22:08 2021 +0300

    Merge branch 'master' into 1273-querylog-client-name

commit 4ed7eab52b6b5b0c0ddb5aa5a3225a62d1f9265b
Merge: dbf990eb 70d4c70e
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Fri Apr 2 12:57:17 2021 +0300

    Merge branch 'master' into 1273-querylog-client-name

commit dbf990eb881116754554270e7b691b5db8e9ee34
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Fri Apr 2 12:56:13 2021 +0300

    home: imp names

commit c2cfdef494ca26fff62b9fa008f1b389d9d4d46b
Author: Artem Baskal <a.baskal@adguard.com>
Date:   Thu Apr 1 19:26:04 2021 +0300

    Rename to whois

commit e3cc4a68ee576770b1922680155308e33bed31e8
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Thu Apr 1 19:03:42 2021 +0300

    home: imp whois more

commit 3b8ef8691c298aff35946b35923ef2e5b1f9bbbe
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Thu Apr 1 18:51:14 2021 +0300

    home: imp whois resp

commit fb97e0d74976723a512d6ff4c69e830fe59c8df8
Author: Artem Baskal <a.baskal@adguard.com>
Date:   Thu Apr 1 18:00:03 2021 +0300

    Fix client_info ids prop types

commit 298005189e372651ceff453e88aca19ee925a138
Author: Artem Baskal <a.baskal@adguard.com>
Date:   Thu Apr 1 17:58:14 2021 +0300

    Adapt changes on client

commit aa1769f64197d865478a66271da483babfc5dfd0
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Thu Apr 1 17:18:36 2021 +0300

    all: add more fields to querylog client

commit 4b2a2dbd380ec410f3068d15ea16430912e03e33
Merge: cda92c3f 2e4e2f62
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Thu Apr 1 16:57:26 2021 +0300

    Merge branch 'master' into 1273-querylog-client-name

commit cda92c3f0331cbac252f3163d31457f716bc7f2c
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Mon Mar 29 18:03:51 2021 +0300

    querylog: fix windows tests

commit 5a56f0a32608869ed93a38f18f63ea3a20f7bde2
Merge: 627e4958 e710ce11
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Mon Mar 29 17:45:53 2021 +0300

    Merge branch 'master' into 1273-querylog-client-name

commit 627e495828e82d44cc77aa393536479f23cc68b7
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Mon Mar 29 17:44:49 2021 +0300

    querylog: add tests, imp code, docs

commit 6dec468a2f0c29357875ff99458e0e8f8e580e6d
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Fri Mar 26 16:10:47 2021 +0300

    querylog: search clients by name, enrich http resp
2021-04-02 17:30:39 +03:00

142 lines
2.9 KiB
Go

package querylog
import (
"bytes"
"encoding/json"
"errors"
"os"
"time"
"github.com/AdguardTeam/golibs/log"
)
// flushLogBuffer flushes the current buffer to file and resets the current buffer
func (l *queryLog) flushLogBuffer(fullFlush bool) error {
if !l.conf.FileEnabled {
return nil
}
l.fileFlushLock.Lock()
defer l.fileFlushLock.Unlock()
// flush remainder to file
l.bufferLock.Lock()
needFlush := len(l.buffer) >= int(l.conf.MemSize)
if !needFlush && !fullFlush {
l.bufferLock.Unlock()
return nil
}
flushBuffer := l.buffer
l.buffer = nil
l.flushPending = false
l.bufferLock.Unlock()
err := l.flushToFile(flushBuffer)
if err != nil {
log.Error("Saving querylog to file failed: %s", err)
return err
}
return nil
}
// flushToFile saves the specified log entries to the query log file
func (l *queryLog) flushToFile(buffer []*logEntry) error {
if len(buffer) == 0 {
log.Debug("querylog: there's nothing to write to a file")
return nil
}
start := time.Now()
var b bytes.Buffer
e := json.NewEncoder(&b)
for _, entry := range buffer {
err := e.Encode(entry)
if err != nil {
log.Error("Failed to marshal entry: %s", err)
return err
}
}
elapsed := time.Since(start)
log.Debug("%d elements serialized via json in %v: %d kB, %v/entry, %v/entry", len(buffer), elapsed, b.Len()/1024, float64(b.Len())/float64(len(buffer)), elapsed/time.Duration(len(buffer)))
var err error
var zb bytes.Buffer
filename := l.logFile
zb = b
l.fileWriteLock.Lock()
defer l.fileWriteLock.Unlock()
f, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0o644)
if err != nil {
log.Error("failed to create file \"%s\": %s", filename, err)
return err
}
defer f.Close()
n, err := f.Write(zb.Bytes())
if err != nil {
log.Error("Couldn't write to file: %s", err)
return err
}
log.Debug("querylog: ok \"%s\": %v bytes written", filename, n)
return nil
}
func (l *queryLog) rotate() error {
from := l.logFile
to := l.logFile + ".1"
err := os.Rename(from, to)
if err != nil {
if errors.Is(err, os.ErrNotExist) {
return nil
}
log.Error("querylog: failed to rename file: %s", err)
return err
}
log.Debug("querylog: renamed %s -> %s", from, to)
return nil
}
func (l *queryLog) readFileFirstTimeValue() int64 {
f, err := os.Open(l.logFile)
if err != nil {
return -1
}
defer f.Close()
buf := make([]byte, 500)
r, err := f.Read(buf)
if err != nil {
return -1
}
buf = buf[:r]
val := readJSONValue(string(buf), "T")
t, err := time.Parse(time.RFC3339Nano, val)
if err != nil {
return -1
}
log.Debug("querylog: the oldest log entry: %s", val)
return t.Unix()
}
func (l *queryLog) periodicRotate() {
intervalSeconds := uint64(l.conf.RotationIvl) * 24 * 60 * 60
for {
oldest := l.readFileFirstTimeValue()
if uint64(oldest)+intervalSeconds <= uint64(time.Now().Unix()) {
_ = l.rotate()
}
time.Sleep(24 * time.Hour)
}
}