package main
import (
	"fmt"
	"strings"
	"time"
)
/**
* 日志解析系統(tǒng)分為： 解析，讀取，寫(xiě)入
 */
type LogProcess struct {
	path        string      // 讀取文件路徑
	influxDBDsn string      // influx data source
	rc          chan string // read module to process
	wc          chan string // process to influx
}
// 返回函數(shù)使用 指針， 結(jié)構(gòu)體很大 不需要進(jìn)行拷貝 性能優(yōu)化
func (l *LogProcess) ReadFromFile() {
	// 文件讀取模塊
	line := "message"
	l.rc <- line
}
func (l *LogProcess) Process() {
	// 文件解析模塊
	data := <-l.rc
	l.wc <- strings.ToUpper(data)
}
func (l *LogProcess) writeToInfluxDB() {
	fmt.Println(<-l.wc)
}
func main() {
	// lp 引用類型
	lp := &LogProcess{
		path:        "./tmp/access.log",
		influxDBDsn: "username&password...",
		rc:          make(chan string),
		wc:          make(chan string),
	}
	// tree goroutine run
	go lp.ReadFromFile()
	go lp.Process()
	// 需要定義 chan 將 Process 數(shù)據(jù) 傳遞給 influxDB
	go lp.writeToInfluxDB()
	time.Sleep(2 * time.Second)
}

package main
import (
	"fmt"
	"strings"
	"time"
)
/**
* 日志解析系統(tǒng)分為： 解析，讀取，寫(xiě)入
 */
type LogProcess struct {
	rc    chan string // read module to process
	wc    chan string // process to influx
	read  Read
	write Writer
}
func (l *LogProcess) Process() {
	// 文件解析模塊
	data := <-l.rc
	l.wc <- strings.ToUpper(data)
}
type Writer interface {
	writer(wc chan string)
}
type WriteToInfluxDB struct {
	influxDBDsn string // influx data source
}
func (w *WriteToInfluxDB) writer(wc chan string) {
	fmt.Println(<-wc)
}
type Read interface {
	read(rc chan string)
}
type ReadFromFile struct {
	path string // 讀取文件
}
func (r *ReadFromFile) read(rc chan string) {
	// 讀取模塊
	line := "message"
	rc <- line
}
func main() {
	// lp 引用類型
	r := &ReadFromFile{
		path: "./tmp/access.log",
	}
	w := &WriteToInfluxDB{
		influxDBDsn: "username&password"}
	lp := &LogProcess{
		rc:    make(chan string),
		wc:    make(chan string),
		read:  r,
		write: w,
	}
	// 通過(guò)接口方式 約束其功能
	go lp.read.read(lp.rc)
	go lp.Process()
	go lp.write.writer(lp.wc)
	// 通過(guò)參數(shù)注入方式
	time.Sleep(2 * time.Second)
}

package main
import (
	"bufio"
	"fmt"
	"io"
	"os"
	"strings"
	"time"
)
/**
* 日志解析系統(tǒng)分為： 解析，讀取，寫(xiě)入
 */
type LogProcess struct {
	rc    chan []byte // read module to process
	wc    chan string // process to influx
	read  Read
	write Writer
}
func (l *LogProcess) Process() {
	// 文件解析模塊
	for v := range l.rc {
		l.wc <- strings.ToUpper(string(v))
	}
}
type Writer interface {
	writer(wc chan string)
}
type WriteToInfluxDB struct {
	influxDBDsn string // influx data source
}
func (w *WriteToInfluxDB) writer(wc chan string) {
	// wc 通道另外一種讀取方式
	for x := range wc {
		fmt.Println(x)
	}
}
type Read interface {
	read(rc chan []byte)
}
type ReadFromFile struct {
	path string // 讀取文件
}
func (r *ReadFromFile) read(rc chan []byte) {
	// 實(shí)時(shí)系統(tǒng)： 從文件末尾逐行進(jìn)行讀取
	f, err := os.Open(r.path)
	if err != nil {
		panic(fmt.Sprintln("open file error:%s", err.Error()))
	}
	// 文件末尾最開(kāi)始進(jìn)行讀取
	f.Seek(0, 2)
	rd := bufio.NewReader(f)
	for {
		line, err := rd.ReadBytes('\n')
		if err == io.EOF {
			// d讀取到文件末尾, 日志還沒(méi)有寫(xiě)入
			time.Sleep(500 * time.Millisecond)
			continue
		} else if err != nil {
			panic(fmt.Sprintln("ReadBytes error:%s", err.Error()))
		}
		rc <- line[:len(line)-1]
	}
}
func main() {
	// lp 引用類型
	r := &ReadFromFile{
		path: "H:\\code\\goprogarm\\src\\access.log",
	}
	w := &WriteToInfluxDB{
		influxDBDsn: "username&password"}
	lp := &LogProcess{
		rc:    make(chan []byte),
		wc:    make(chan string),
		read:  r,
		write: w,
	}
	// 通過(guò)接口方式 約束其功能
	go lp.read.read(lp.rc)
	go lp.Process()
	go lp.write.writer(lp.wc)
	// 通過(guò)參數(shù)注入方式
	time.Sleep(100 * time.Second)
}

package main
import (
	"bufio"
	"fmt"
	"io"
	"log"
	"os"
	"regexp"
	"strconv"
	"time"
)
/**
* 日志解析系統(tǒng)分為： 解析，讀取，寫(xiě)入
 */
type LogProcess struct {
	rc    chan []byte // read module to process
	wc    chan *Message // process to influx
	read  Read
	write Writer
}
//日志寫(xiě)入結(jié)構(gòu)體
type Message struct {
	TimeLocal time.Time
	BytesSent int
	Path, Method, Scheme, Status string
	UpstreamTime, RequestTime float64
}
func (l *LogProcess) Process() {
	// 通過(guò)正則表達(dá)式進(jìn)行解析數(shù)據(jù)
	r := regexp.MustCompile(`(\s*)`)
	loc, _ := time.LoadLocation("Asia/shanghai")
	// 文件解析模塊
	for v := range l.rc {
		ret := r.FindStringSubmatch(string(v))
		if len(ret) != 13 {
			log.Println("FindStringSub match fail:", string(v))
			continue
		}
		message := &Message{
		}
		location, err := time.ParseInLocation("02/Jan/2006:15:04:05 +0000", ret[4], loc)
		if err != nil {
			log.Println("ParseInLocation fail:", err.Error(), ret[4])
		}
		message.TimeLocal = location
		// 字符串類型轉(zhuǎn)換成int
		atoi, err := strconv.Atoi(ret[8])
		if err != nil {
			log.Println("strconv.Atoi fail:", err.Error(), ret[4])
		}
		message.BytesSent = atoi
		l.wc <- message
	}
}
type Writer interface {
	writer(wc chan *Message)
}
type WriteToInfluxDB struct {
	influxDBDsn string // influx data source
}
func (w *WriteToInfluxDB) writer(wc chan *Message) {
	// wc 通道另外一種讀取方式
	for x := range wc {
		fmt.Println(x)
	}
}
type Read interface {
	read(rc chan []byte)
}
type ReadFromFile struct {
	path string // 讀取文件
}
func (r *ReadFromFile) read(rc chan []byte) {
	// 實(shí)時(shí)系統(tǒng)： 從文件末尾逐行進(jìn)行讀取
	f, err := os.Open(r.path)
	if err != nil {
		panic(fmt.Sprintf("open file error:%s\n", err.Error()))
	}
	// 文件末尾最開(kāi)始進(jìn)行讀取
	f.Seek(0, 2)
	rd := bufio.NewReader(f)
	for {
		line, err := rd.ReadBytes('\n')
		if err == io.EOF {
			// d讀取到文件末尾, 日志還沒(méi)有寫(xiě)入
			time.Sleep(500 * time.Millisecond)
			continue
		} else if err != nil {
			panic(fmt.Sprintf("ReadBytes error:%s\n", err.Error()))
		}
		rc <- line[:len(line)-1]
	}
}
func main() {
	// lp 引用類型
	r := &ReadFromFile{
		path: "H:\\code\\goprogarm\\src\\access.log",
	}
	w := &WriteToInfluxDB{
		influxDBDsn: "username&password"}
	lp := &LogProcess{
		rc:    make(chan []byte),
		wc:    make(chan *Message),
		read:  r,
		write: w,
	}
	// 通過(guò)接口方式 約束其功能
	go lp.read.read(lp.rc)
	go lp.Process()
	go lp.write.writer(lp.wc)
	// 通過(guò)參數(shù)注入方式
	time.Sleep(100 * time.Second)
}