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eventLog.go
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eventLog.go
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// Copyright (C) 2014-2018 Goodrain Co., Ltd.
// RAINBOND, Application Management Platform
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version. For any non-GPL usage of Rainbond,
// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
// must be obtained first.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package handler
import (
"bytes"
"compress/zlib"
"context"
"fmt"
"io"
"io/ioutil"
"os"
"github.com/goodrain/rainbond/util"
api_model "github.com/goodrain/rainbond/api/model"
"github.com/Sirupsen/logrus"
"github.com/coreos/etcd/client"
"os/exec"
eventdb "github.com/goodrain/rainbond/eventlog/db"
)
//LogAction log action struct
type LogAction struct {
EtcdEndpoints []string
eventdb *eventdb.EventFilePlugin
}
//CreateLogManager get log manager
func CreateLogManager(etcdEndpoint []string) *LogAction {
return &LogAction{
EtcdEndpoints: etcdEndpoint,
eventdb: &eventdb.EventFilePlugin{
HomePath: "/grdata/logs/",
},
}
}
//GetLogList get log list
func (l *LogAction) GetLogList(serviceAlias string) ([]string, error) {
downLoadDIR := "/grdata/downloads"
urlPath := fmt.Sprintf("/log/%s", serviceAlias)
logDIR := fmt.Sprintf("%s%s", downLoadDIR, urlPath)
_, err := os.Stat(logDIR)
if os.IsNotExist(err) {
return nil, err
}
fileList, err := ioutil.ReadDir(logDIR)
if err != nil {
return nil, err
}
var logList []string
if len(fileList) == 0 {
return logList, nil
}
for _, file := range fileList {
filePath := fmt.Sprintf("/logs/%s/%s", serviceAlias, file.Name())
logrus.Debugf("filepath is %s", file.Name())
logList = append(logList, filePath)
}
return logList, nil
}
//GetLogFile GetLogFile
func (l *LogAction) GetLogFile(serviceAlias, fileName string) (string, string, error) {
downLoadDIR := "/grdata/downloads"
urlPath := fmt.Sprintf("/log/%s", serviceAlias)
fullPath := fmt.Sprintf("%s%s/%s", downLoadDIR, urlPath, fileName)
logPath := fmt.Sprintf("%s/log/%s", downLoadDIR, serviceAlias)
_, err := os.Stat(fullPath)
if os.IsNotExist(err) {
return "", "", err
}
return logPath, fullPath, err
}
//GetLogInstance get log web socket instance
func (l *LogAction) GetLogInstance(serviceID string) (string, error) {
//etcd V2
etcdclient, err := client.New(client.Config{
Endpoints: l.EtcdEndpoints,
})
if err != nil {
return "", err
}
value, err := client.NewKeysAPI(etcdclient).Get(context.Background(),
fmt.Sprintf("/event/dockerloginstacne/%s", serviceID),
nil)
if err != nil {
return "", err
}
return value.Node.Value, nil
/*
@ etcd V3 使用
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
etcdclientv3, err := clientv2.New(clientv3.Config{
Endpoints: l.EtcdEndpoints,
})
value, err := etcdclientv3.Get(ctx, fmt.Sprintf("/event/dockerloginstacne/%s", serviceID))
if err != nil {
return "", err
}
if len(value.Kvs) == 0 {
return "", errors.New("have no value")
}
return string(value.Kvs[0].Value), nil
*/
}
//GetLevelLog 获取指定操作的操作日志
func (l *LogAction) GetLevelLog(eventID string, level string) (*api_model.DataLog, error) {
messageList, err := l.eventdb.GetMessages(eventID, level)
if err != nil {
return nil, err
}
return &api_model.DataLog{
Status: "success",
Data: messageList,
}, nil
}
//GetLinesLogs GetLinesLogs
func (l *LogAction) GetLinesLogs(alias string, n int) ([]byte, error) {
downLoadDIR := "/grdata/downloads"
filePath := fmt.Sprintf("%s/log/%s/stdout.log", downLoadDIR, alias)
if ok, err := util.FileExists(filePath); !ok {
if err != nil {
logrus.Errorf("check file exist error %s", err.Error())
}
return []byte(""), nil
}
f, err := exec.Command("tail", "-n", fmt.Sprintf("%d", n), filePath).Output()
if err != nil {
return nil, err
}
return f, nil
}
//Decompress zlib解码
func decompress(zb []byte) ([]byte, error) {
b := bytes.NewReader(zb)
var out bytes.Buffer
r, err := zlib.NewReader(b)
if err != nil {
return nil, err
}
if _, err := io.Copy(&out, r); err != nil {
return nil, err
}
return out.Bytes(), nil
}
func checkLevel(level, info string) bool {
switch level {
case "error":
if info == "error" {
return true
}
return false
case "info":
if info == "info" || info == "error" {
return true
}
return false
case "debug":
if info == "info" || info == "error" || info == "debug" {
return true
}
return false
default:
if info == "info" || info == "error" {
return true
}
return false
}
}
func uncompress(source []byte) (re []byte, err error) {
r, err := zlib.NewReader(bytes.NewReader(source))
if err != nil {
return nil, err
}
var buffer bytes.Buffer
io.Copy(&buffer, r)
r.Close()
return buffer.Bytes(), nil
}
func bubSort(d []api_model.MessageData) []api_model.MessageData {
for i := 0; i < len(d); i++ {
for j := i + 1; j < len(d); j++ {
if d[i].Unixtime > d[j].Unixtime {
temp := d[i]
d[i] = d[j]
d[j] = temp
}
}
}
return d
}