Merge pull request 'feature/impl-cron-type' (#4) from feature/impl-cron-type into develop

Reviewed-on: #4

cmd/svc/main.go

@@ -1,20 +1,24 @@
 package main
 
 import (
+	"bufio"
 	"context"
 	"deploy/pkg/config"
 	"deploy/pkg/logger"
 	"deploy/pkg/server"
 	"deploy/pkg/tools"
+	"errors"
 	"flag"
 	"fmt"
 	"log"
 	"net/http"
 	"os"
+	"os/exec"
 	"os/signal"
 	"syscall"
 	"time"
 
+	"github.com/robfig/cron/v3"
 	"github.com/sirupsen/logrus"
 	"gopkg.in/fsnotify.v1"
 )
@@ -22,7 +26,6 @@ import (
 var cfgPath string = "./config.yml"
 
 func main() {
-
 	flag.StringVar(&cfgPath, "c", "./config.yml", "config yaml path")
 	flag.Parse()
 
@@ -82,11 +85,20 @@ func runService(reload <-chan struct{}) {
 	log := logger.NewLogger(nil)
 
 	var svc *http.Server
+	var cron *Cron
 
 	// infinity loop
 	for {
+		cfg, err := config.Load(cfgPath)
+		if err != nil {
+			log.Fatal(err)
+		}
+
 		if svc == nil {
-			svc = startServer(log)
+			svc = startServer(cfg, log)
+		}
+		if cron == nil {
+			cron = startCron(cfg, log)
 		}
 
 		select {
@@ -95,8 +107,11 @@ func runService(reload <-chan struct{}) {
 				// channel closed exit program
 				if err := stopServer(svc); err != nil {
 					log.Fatal(err)
-					return
 				}
+				if err := stopCron(cron); err != nil {
+					log.Fatal(err)
+				}
+				return
 			}
 			if time.Since(lastReload).Seconds() < float64(2*time.Second) {
 				break
@@ -106,16 +121,96 @@ func runService(reload <-chan struct{}) {
 			if err := stopServer(svc); err != nil {
 				log.Fatal(err)
 			}
+			if err := stopCron(cron); err != nil {
+				log.Fatal(err)
+			}
+			svc = nil
+			cron = nil
 		}
 	}
 }
 
-func startServer(log *logrus.Logger) *http.Server {
-	cfg, err := config.Load(cfgPath)
-	if err != nil {
-		log.Fatal(err)
+type Cron struct {
+	*cron.Cron
+	Logger *logrus.Logger
 }
 
+func (c *Cron) setJobs(cfg *config.Config) {
+	for _, v := range cfg.CronJobs {
+		c.AddFunc(v.CronTime, func() {
+			cmd := exec.Command(v.Script)
+
+			// r, w := io.Pipe()
+			nlog := c.Logger.WithFields(logrus.Fields{"module": "cron", "script": v.Script})
+			reader, err := cmd.StdoutPipe()
+			if err != nil {
+				nlog.Warnf("setup pipe out fail: %+v\n", err)
+			}
+			errReader, err := cmd.StderrPipe()
+			if err != nil {
+				nlog.Warnf("setup pipe out fail: %+v\n", err)
+			}
+
+			if err := cmd.Start(); err != nil {
+				nlog.Warnf("start script fail: %+v\n", err)
+			}
+
+			go func() {
+				in := bufio.NewScanner(reader)
+				for in.Scan() {
+					nlog.Debugf(in.Text())
+				}
+				if err := in.Err(); err != nil {
+					nlog.Warnf("script error: %+v\n", err)
+				}
+			}()
+			go func() {
+				in := bufio.NewScanner(errReader)
+				for in.Scan() {
+					nlog.Debugf(in.Text())
+				}
+				if err := in.Err(); err != nil {
+					nlog.Warnf("script error: %+v\n", err)
+				}
+			}()
+
+		})
+	}
+
+}
+
+func startCron(cfg *config.Config, log *logrus.Logger) *Cron {
+	tz, err := time.LoadLocation("Asia/Taipei")
+	if err != nil {
+		panic(err)
+	}
+	c := cron.New(
+		cron.WithLocation(tz),
+		cron.WithParser(cron.NewParser(cron.Minute|cron.Hour|cron.Dom|cron.Month|cron.Dow)),
+	)
+
+	c2 := &Cron{Cron: c, Logger: log}
+
+	c2.setJobs(cfg)
+	c2.Start()
+
+	return c2
+}
+
+func stopCron(c *Cron) error {
+	ctx := c.Stop()
+
+	select {
+	case <-ctx.Done():
+		return nil
+	case <-time.Tick(time.Second * 5):
+		// skip stop jobs
+		return errors.New("stop jobs fail")
+	}
+}
+
+func startServer(cfg *config.Config, log *logrus.Logger) *http.Server {
+
 	engine := server.NewServer(log)
 	// set routes
 	if err := engine.SetRoutes(cfg.Listens); err != nil {

config.yml.sample

@@ -7,3 +7,7 @@ listens:
       path: /t
       headers: {}
       script: /tmp/run.sh
+
+cron_jobs:
+  - cron_time: '0 1 * * *'
+    script: /tmp/run.sh

go.mod

@@ -1,6 +1,6 @@
 module deploy
 
-go 1.17
+go 1.16
 
 require (
 	github.com/gin-gonic/gin v1.7.2
@@ -24,6 +24,7 @@ require (
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.1 // indirect
 	github.com/otakukaze/envconfig v1.0.4 // indirect
+	github.com/robfig/cron/v3 v3.0.0 // indirect
 	github.com/ugorji/go/codec v1.2.6 // indirect
 	golang.org/x/crypto v0.0.0-20210513164829-c07d793c2f9a // indirect
 	golang.org/x/sys v0.0.0-20210611083646-a4fc73990273 // indirect

go.sum

@@ -48,6 +48,8 @@ github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/robfig/cron/v3 v3.0.0 h1:kQ6Cb7aHOHTSzNVNEhmp8EcWKLb4CbiMW9h9VyIhO4E=
+github.com/robfig/cron/v3 v3.0.0/go.mod h1:eQICP3HwyT7UooqI/z+Ov+PtYAWygg1TEWWzGIFLtro=
 github.com/sirupsen/logrus v1.8.1 h1:dJKuHgqk1NNQlqoA6BTlM1Wf9DOH3NBjQyu0h9+AZZE=
 github.com/sirupsen/logrus v1.8.1/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=

pkg/config/config.go

@@ -7,6 +7,7 @@ import (
 	"strings"
 
 	errors "github.com/pkg/errors"
+	"github.com/robfig/cron/v3"
 
 	confLoader "github.com/otakukaze/config-loader"
 )
@@ -14,12 +15,18 @@ import (
 type Config struct {
 	Server   Server    `yaml:"server"`
 	Listens  []Listen  `yaml:"listens"`
+	CronJobs []CronJob `yaml:"cron_jobs"`
 }
 
 type Server struct {
 	Port int `yaml:"port" env:"SERVER_PORT" default:"10230"`
 }
 
+type CronJob struct {
+	CronTime string `yaml:"cron_time"`
+	Script   string `yaml:"script"`
+}
+
 type Listen struct {
 	HTTP *HTTPListen `yaml:"http"`
 }
@@ -88,5 +95,19 @@ func Load(p ...string) (*Config, error) {
 		}
 	}
 
+	// check cronJob
+	cronParser := cron.NewParser(cron.Minute | cron.Hour | cron.Dom | cron.Month | cron.Dow)
+	for _, v := range cfg.CronJobs {
+		_, err := cronParser.Parse(v.CronTime)
+		if err != nil {
+			return nil, err
+		}
+
+		// check script exists
+		if !tools.CheckExists(v.Script, false) {
+			return nil, errors.WithStack(fmt.Errorf("cron (%s) script not exists: %s\n", v.CronTime, v.Script))
+		}
+	}
+
 	return cfg, nil
 }

pkg/server/server.go

@@ -47,7 +47,7 @@ func (s *HTTPServer) setHandler(check map[string]string, script string) gin.Hand
 			cmd := exec.Command(script)
 
 			// r, w := io.Pipe()
-			nlog := s.Logger.WithFields(logrus.Fields{"script": script})
+			nlog := s.Logger.WithFields(logrus.Fields{"module": "http", "script": script})
 			reader, err := cmd.StdoutPipe()
 			if err != nil {
 				nlog.Warnf("setup pipe out fail: %+v\n", err)

pkg/set/set.go

@@ -22,7 +22,7 @@ func (s Set) Size() int {
 func (s Set) Keys() []interface{} {
 	keys := make([]interface{}, 0)
 
-	for k, _ := range s {
+	for k := range s {
 		keys = append(keys, k)
 	}