d4-goclient.go

@@ -10,7 +10,6 @@ import (
 	"encoding/json"
 	"flag"
 	"fmt"
-	"golang.org/x/net/proxy"
 	"io"
 	"io/ioutil"
 	"log"
@@ -19,12 +18,12 @@ import (
 	"os/signal"
 	"strconv"
 	"strings"
-	"syscall"
 	"time"
 
 	config "github.com/D4-project/d4-golang-utils/config"
 	uuid "github.com/D4-project/d4-golang-utils/crypto/hash"
 	"github.com/D4-project/d4-golang-utils/inputreader"
+	_ "github.com/D4-project/d4-golang-utils/inputreader"
 	"github.com/gomodule/redigo/redis"
 )
 
@@ -67,11 +66,8 @@ type (
 		ct             time.Duration
 		ce             bool
 		retry          time.Duration
-		rate           time.Duration
+		rate          time.Duration
 		cc             bool
-		tor            bool
-		daily          bool
-		json           bool
 		ca             x509.CertPool
 		d4error        uint8
 		errnoCopy      uint8
@@ -95,35 +91,31 @@ type (
 		redisPort   string
 		redisQueue  string
 		redisDB     int
-		folderstr   string
 	}
 )
 
 var (
 	// Verbose mode and logging
-	buf      bytes.Buffer
+	buf    bytes.Buffer
-	logger   = log.New(&buf, "INFO: ", log.Lshortfile)
+	logger = log.New(&buf, "INFO: ", log.Lshortfile)
 	debugger = log.New(&buf, "DEBUG: ", log.Lmicroseconds)
-	debugf   = func(debug string) {
+	debugf  = func(debug string) {
 		debugger.Println("", debug)
 	}
 
 	tmpct, _    = time.ParseDuration("5mn")
 	tmpcka, _   = time.ParseDuration("30s")
 	tmpretry, _ = time.ParseDuration("30s")
-	tmprate, _  = time.ParseDuration("200ms")
+	tmprate, _ = time.ParseDuration("200ms")
 
-	confdir   = flag.String("c", "", "configuration directory")
+	confdir = flag.String("c", "", "configuration directory")
-	debug     = flag.Bool("v", false, "Set to True, true, TRUE, 1, or t to enable verbose output on stdout - Don't use in production")
+	debug   = flag.Bool("v", false, "Set to True, true, TRUE, 1, or t to enable verbose output on stdout - Don't use in production")
-	ce        = flag.Bool("ce", true, "Set to True, true, TRUE, 1, or t to enable TLS on network destination")
+	ce      = flag.Bool("ce", true, "Set to True, true, TRUE, 1, or t to enable TLS on network destination")
-	ct        = flag.Duration("ct", tmpct, "Set timeout in human format")
+	ct      = flag.Duration("ct", tmpct, "Set timeout in human format")
-	cka       = flag.Duration("cka", tmpcka, "Keep Alive time human format, 0 to disable")
+	cka     = flag.Duration("cka", tmpcka, "Keep Alive time human format, 0 to disable")
-	retry     = flag.Duration("rt", tmpretry, "Time in human format before retry after connection failure, set to 0 to exit on failure")
+	retry   = flag.Duration("rt", tmpretry, "Time in human format before retry after connection failure, set to 0 to exit on failure")
-	rate      = flag.Duration("rl", tmprate, "Rate limiter: time in human format before retry after EOF")
+	rate   = flag.Duration("rl", tmprate, "Rate limiter: time in human format before retry after EOF")
-	cc        = flag.Bool("cc", false, "Check TLS certificate against rootCA.crt")
+	cc      = flag.Bool("cc", false, "Check TLS certificate against rootCA.crt")
-	torflag   = flag.Bool("tor", false, "Use a SOCKS5 tor proxy on 9050")
-	dailyflag = flag.Bool("daily", false, "Sets up filewatcher to watch a new %Y%M%D folder at midnight")
-	jsonflag  = flag.Bool("json", false, "The files watched are json files")
 )
 
 func main() {
@@ -138,7 +130,6 @@ func main() {
 	}
 	defer f.Close()
 	logger.SetOutput(f)
-	logger.SetFlags(log.LstdFlags | log.Lshortfile)
 	logger.Println("Init")
 
 	flag.Usage = func() {
@@ -174,135 +165,56 @@ func main() {
 		*confdir = strings.TrimSuffix(*confdir, "/")
 		*confdir = strings.TrimSuffix(*confdir, "\\")
 	}
-
 	d4.confdir = *confdir
 	d4.ce = *ce
 	d4.ct = *ct
 	d4.cc = *cc
-	d4.json = *jsonflag
 	d4.cka = *cka
 	d4.retry = *retry
 	d4.rate = *rate
-	d4.tor = *torflag
-	d4.daily = *dailyflag
 
 	s := make(chan os.Signal, 1)
 	signal.Notify(s, os.Interrupt, os.Kill)
-	errchan := make(chan error)
+	c := make(chan string)
-	eofchan := make(chan string)
-	metachan := make(chan string)
 
-	// Launching the Rate limiters
+	// Launching the Rate limiter
-	rateLimiter := time.Tick(d4.rate)
+    ratelimiter := time.Tick(d4.rate)
-	retryLimiter := time.Tick(d4.retry)
 
-	//Setup
+	d4.mhb = bytes.NewBuffer(d4.mh)
-	if !d4loadConfig(d4p) {
-		panic("Could not load Config.")
-	}
-	if !setReaderWriters(d4p, false) {
-		panic("Could not Init Inputs Outputs.")
-	}
-	if !d4.dst.initHeader(d4p) {
-		panic("Could not Init Headers.")
-	}
 
-	// force is a flag that forces the creation of a new connection
-	force := false
-
-	// On the first run, we send d4 meta header for type 2/254
-	if d4.conf.ttype == 254 || d4.conf.ttype == 2 {
-		go sendMeta(d4p, errchan, metachan)
-	H:
-		for {
-			select {
-			case <-errchan:
-				select {
-				case <-retryLimiter:
-					go sendMeta(d4p, errchan, metachan)
-				case <-s:
-					logger.Println("Exiting")
-					exit(d4p, 0)
-				}
-			case <-metachan:
-				break H
-			}
-		}
-	}
-
-	// Launch copy routine
-	go d4Copy(d4p, errchan, eofchan)
-
-	// Handle signals
 	for {
+		// init or reinit after retry
+		if set(d4p) {
+			// type 254 requires to send a meta-header first
+			if d4.conf.ttype == 254 || d4.conf.ttype == 2 {
+				// create a jsonreader
+				d4p.dst.hijackHeader()
+				// Ugly hack to skip bytes.Buffer WriteTo check that bypasses my fixed lenght buffer
+				nread, err := io.CopyBuffer(&d4.dst, struct{ io.Reader }{d4.mhb}, d4.dst.pb)
+				if err != nil {
+					panic(fmt.Sprintf("Cannot initiate session %s", err))
+				}
+				logger.Println(fmt.Sprintf("Meta-Header sent: %d bytes", nread))
+				d4p.dst.restoreHeader()
+			}
+			// copy routine
+			go d4Copy(d4p, c)
+			// Block until the rate limiter allow us to continue
+			<-ratelimiter
+		} else if d4.retry > 0 {
+			go func() {
+				logger.Println(fmt.Sprintf("Sleeping for %.f seconds before retry...", d4.retry.Seconds()))
+				time.Sleep(d4.retry)
+				c <- "done waiting"
+			}()
+		} else {
+			exit(d4p, 1)
+		}
+
+		// Block until we catch an event
 		select {
-		// Case where the input ran out of data to consume1
+		case <-c:
-		case <-eofchan:
+			continue
-			// We wait for ratelimiter before polling again
-		EOF:
-			for {
-				select {
-				case <-rateLimiter:
-					// copy routine
-					go d4Copy(d4p, errchan, eofchan)
-					break EOF
-					// Exit signal
-				case <-s:
-					logger.Println("Exiting")
-					exit(d4p, 0)
-				}
-			}
-		// ERROR, we check first whether it is network related
-		case err := <-errchan:
-			// On connection errors, we force setReaderWriter to reset the connection
-			force = false
-			switch t := err.(type) {
-			case *net.OpError:
-				force = true
-				if t.Op == "dial" {
-					logger.Println("Unknown Host")
-				} else if t.Op == "read" {
-					logger.Println("Connection Refused")
-				} else if t.Op == "write" {
-					logger.Println("Write error")
-				}
-			case syscall.Errno:
-				if t == syscall.ECONNREFUSED {
-					force = true
-					logger.Println("Connection Refused")
-				}
-			}
-			// We wait for retryLimiter before writing again
-		RETRY:
-			for {
-				select {
-				case <-retryLimiter:
-					if !setReaderWriters(d4p, force) {
-						// Can't connect, we break to retry
-						// force is still true
-						break
-					}
-					if !d4.dst.initHeader(d4p) {
-						panic("Could not Init Headers.")
-					}
-					if (d4.conf.ttype == 254 || d4.conf.ttype == 2) && force {
-						// setReaderWriter is happy, we should have a working
-						// connection from now on.
-						force = false
-						// Sending meta header for the first time on this new connection
-						go sendMeta(d4p, errchan, metachan)
-					}
-					break RETRY
-					// Exit signal
-				case <-s:
-					logger.Println("Exiting")
-					exit(d4p, 0)
-				}
-			}
-		// metaheader sent, launch the copy routine
-		case <-metachan:
-			go d4Copy(d4p, errchan, eofchan)
-		// Exit signal
 		case <-s:
 			logger.Println("Exiting")
 			exit(d4p, 0)
@@ -319,31 +231,25 @@ func exit(d4 *d4S, exitcode int) {
 	os.Exit(exitcode)
 }
 
-func d4Copy(d4 *d4S, errchan chan error, eofchan chan string) {
+func set(d4 *d4S) bool {
+	if d4loadConfig(d4) {
+		if setReaderWriters(d4) {
+			if d4.dst.initHeader(d4) {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+func d4Copy(d4 *d4S, c chan string) {
 	nread, err := io.CopyBuffer(&d4.dst, d4.src, d4.dst.pb)
 	// Always retry
 	if err != nil {
-		logger.Printf("D4copy: %s", err)
+		c <- fmt.Sprintf("D4copy: %s", err)
-		errchan <- err
 		return
 	}
-	eofchan <- fmt.Sprintf("EOF: Nread: %d", nread)
+	c <- fmt.Sprintf("EOF: Nread: %d", nread)
-}
-
-func sendMeta(d4 *d4S, errchan chan error, metachan chan string) {
-	// Fill metaheader buffer with metaheader data
-	d4.mhb = bytes.NewBuffer(d4.mh)
-	d4.dst.hijackHeader()
-	// Ugly hack to skip bytes.Buffer WriteTo check that bypasses my fixed lenght buffer
-	nread, err := io.CopyBuffer(&d4.dst, struct{ io.Reader }{d4.mhb}, d4.dst.pb)
-	if err != nil {
-		logger.Printf("Cannot sent meta-header: %s", err)
-		errchan <- err
-		return
-	}
-	logger.Println(fmt.Sprintf("Meta-Header sent: %d bytes", nread))
-	d4.dst.restoreHeader()
-	metachan <- "Header Sent"
 	return
 }
 
@@ -358,20 +264,9 @@ func d4loadConfig(d4 *d4S) bool {
 	if len((*d4).conf.source) < 1 {
 		log.Fatal("Unsupported source")
 	}
-	if (*d4).conf.source == "folder" {
-		fstr := string(readConfFile(d4, "folder"))
-		if ffd, err := os.Stat(fstr); os.IsNotExist(err) {
-			log.Fatal("Folder does not exist")
-		} else {
-			if !ffd.IsDir() {
-				log.Fatal("Folder is not a directory")
-			}
-		}
-		(*d4).conf.folderstr = fstr
-	}
 	if (*d4).conf.source == "d4server" {
 		// Parse Input Redis Config
-		tmp := string(readConfFile(d4, "redis_d4"))
+		tmp := config.ReadConfigFile(*confdir, "redis_d4")
 		ss := strings.Split(string(tmp), "/")
 		if len(ss) <= 1 {
 			log.Fatal("Missing Database in Redis input config: should be host:port/database_name")
@@ -445,13 +340,9 @@ func d4loadConfig(d4 *d4S) bool {
 						if off, err := file.Seek(0, 0); err != nil || off != 0 {
 							panic(fmt.Sprintf("Cannot read Meta-Header file: %s", err))
 						} else {
-							// create metaheader buffer
-							d4.mhb = bytes.NewBuffer(d4.mh)
 							if err := json.Compact((*d4).mhb, data[:count]); err != nil {
 								logger.Println("Failed to compact meta header file")
 							}
-							// Store the metaheader in d4 struct for subsequent retries
-							(*d4).mh = data[:count]
 						}
 					} else {
 						panic("A Meta-Header File should at least contain a 'type' field.")
@@ -498,7 +389,7 @@ func newD4Writer(writer io.Writer, key []byte) d4Writer {
 }
 
 // TODO QUICK IMPLEM, REVISE
-func setReaderWriters(d4 *d4S, force bool) bool {
+func setReaderWriters(d4 *d4S) bool {
 	//TODO implement other destination file, fifo unix_socket ...
 	switch (*d4).conf.source {
 	case "stdin":
@@ -515,85 +406,42 @@ func setReaderWriters(d4 *d4S, force bool) bool {
 			logger.Println("Could not connect to d4 Redis")
 			return false
 		}
-		(*d4).src, err = inputreader.NewLPOPReader(&(*d4).redisCon, (*d4).conf.redisDB, (*d4).conf.redisQueue)
+		(*d4).src, err = inputreader.NewLPOPReader(&(*d4).redisCon, (*d4).conf.redisDB, (*d4).conf.redisQueue, int(time.Second*(*d4).retry))
 		if err != nil {
 			log.Printf("Could not create d4 Redis Descriptor %q \n", err)
 			return false
 		}
-	case "folder":
-		var err error
-		(*d4).src, err = inputreader.NewFileWatcherReader((*d4).conf.folderstr, (*d4).json, (*d4).daily, logger)
-		if err != nil {
-			log.Printf("Could not create File Watcher %q \n", err)
-			return false
-		}
 	}
 	isn, dstnet := config.IsNet((*d4).conf.destination)
 	if isn {
-		// We test whether a connection already exist
+		dial := net.Dialer{
-		// (case where the reader run out of data)
+			Timeout:       (*d4).ct,
-		// force forces to reset the connections after
+			KeepAlive:     (*d4).cka,
-		// failure to reuse it
+			FallbackDelay: 0,
-		if _, ok := (*d4).dst.w.(net.Conn); !ok || force {
+		}
-			if (*d4).tor {
+		tlsc := tls.Config{
-				dialer := net.Dialer{
+			InsecureSkipVerify: true,
-					Timeout:       (*d4).ct,
+		}
-					KeepAlive:     (*d4).cka,
+		if (*d4).cc {
-					FallbackDelay: 0,
+			tlsc = tls.Config{
-				}
+				InsecureSkipVerify: false,
-				dial, err := proxy.SOCKS5("tcp", "127.0.0.1:9050", nil, &dialer)
+				RootCAs:            &(*d4).ca,
-				if err != nil {
-					log.Fatal(err)
-				}
-				tlsc := tls.Config{
-					InsecureSkipVerify: true,
-				}
-				if (*d4).cc {
-					tlsc = tls.Config{
-						InsecureSkipVerify: false,
-						RootCAs:            &(*d4).ca,
-					}
-				}
-				conn, errc := dial.Dial("tcp", dstnet)
-				if errc != nil {
-					logger.Println(errc)
-					return false
-				}
-				if (*d4).ce == true {
-					conn = tls.Client(conn, &tlsc) // use tls
-				}
-				(*d4).dst = newD4Writer(conn, (*d4).conf.key)
-			} else {
-				dial := net.Dialer{
-					Timeout:       (*d4).ct,
-					KeepAlive:     (*d4).cka,
-					FallbackDelay: 0,
-				}
-				tlsc := tls.Config{
-					InsecureSkipVerify: true,
-				}
-				if (*d4).cc {
-					tlsc = tls.Config{
-						InsecureSkipVerify: false,
-						RootCAs:            &(*d4).ca,
-					}
-				}
-				if (*d4).ce == true {
-					conn, errc := tls.DialWithDialer(&dial, "tcp", dstnet, &tlsc)
-					if errc != nil {
-						logger.Println(errc)
-						return false
-					}
-					(*d4).dst = newD4Writer(conn, (*d4).conf.key)
-				} else {
-					conn, errc := dial.Dial("tcp", dstnet)
-					if errc != nil {
-						return false
-					}
-					(*d4).dst = newD4Writer(conn, (*d4).conf.key)
-				}
 			}
 		}
+		if (*d4).ce == true {
+			conn, errc := tls.DialWithDialer(&dial, "tcp", dstnet, &tlsc)
+			if errc != nil {
+				logger.Println(errc)
+				return false
+			}
+			(*d4).dst = newD4Writer(conn, (*d4).conf.key)
+		} else {
+			conn, errc := dial.Dial("tcp", dstnet)
+			if errc != nil {
+				return false
+			}
+			(*d4).dst = newD4Writer(conn, (*d4).conf.key)
+		}
 	} else {
 		switch (*d4).conf.destination {
 		case "stdout":
@@ -618,7 +466,7 @@ func generateUUIDv4() []byte {
 	if err != nil {
 		log.Fatal(err)
 	}
-	logger.Println(fmt.Sprintf("UUIDv4: %s", uuid))
+	logger.Println(fmt.Sprintf("UUIDv4: %s\n", uuid))
 	return uuid.Bytes()
 }
 

go.mod

@@ -3,9 +3,6 @@ module github.com/D4-project/d4-goclient
 go 1.13
 
 require (
-	github.com/D4-project/d4-golang-utils v0.1.14
+	github.com/D4-project/d4-golang-utils v0.1.3
-	github.com/gofrs/uuid v4.4.0+incompatible // indirect
 	github.com/gomodule/redigo v2.0.0+incompatible
-	github.com/rjeczalik/notify v0.9.3 // indirect
-	golang.org/x/net v0.17.0
 )

go.sum

@@ -1,63 +1,6 @@
-github.com/D4-project/d4-golang-utils v0.1.14 h1:APwN+i4qyDrxT8gvlbeV/VXfNas2GvPWOnkTGX1K2Lo=
+github.com/D4-project/d4-golang-utils v0.1.3 h1:JrGoQ3Va4SwGl8Pjnb2bK/wxdFaGsjulAmp0bxZO7jg=
-github.com/D4-project/d4-golang-utils v0.1.14/go.mod h1:qXVZ3kCL72i3uYe29t7aEy9dU0bNqtFvcoNE1dJu0zo=
+github.com/D4-project/d4-golang-utils v0.1.3/go.mod h1:GGR5KMhvABZtIfmS5jZkwQnBoP+9/V0ZEETSGiWLaM4=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/gofrs/uuid v3.2.0+incompatible h1:y12jRkkFxsd7GpqdSZ+/KCs/fJbqpEXSGd4+jfEaewE=
 github.com/gofrs/uuid v3.2.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
-github.com/gofrs/uuid v4.4.0+incompatible h1:3qXRTX8/NbyulANqlc0lchS1gqAVxRgsuW1YrTJupqA=
-github.com/gofrs/uuid v4.4.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 github.com/gomodule/redigo v2.0.0+incompatible h1:K/R+8tc58AaqLkqG2Ol3Qk+DR/TlNuhuh457pBFPtt0=
 github.com/gomodule/redigo v2.0.0+incompatible/go.mod h1:B4C85qUVwatsJoIUNIfCRsp7qO0iAmpGFZ4EELWSbC4=
-github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
-github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/redislabs/redisgraph-go v2.0.2+incompatible/go.mod h1:GYn4oUFkbkHx49xm2H4G8jZziqKDKdRtDUuTBZTmqBE=
-github.com/rjeczalik/notify v0.9.2/go.mod h1:aErll2f0sUX9PXZnVNyeiObbmTlk5jnMoCa4QEjJeqM=
-github.com/rjeczalik/notify v0.9.3 h1:6rJAzHTGKXGj76sbRgDiDcYj/HniypXmSJo1SWakZeY=
-github.com/rjeczalik/notify v0.9.3/go.mod h1:gF3zSOrafR9DQEWSE8TjfI9NkooDxbyT4UgRGKZA0lc=
-github.com/robfig/cron/v3 v3.0.1 h1:WdRxkvbJztn8LMz/QEvLN5sBU+xKpSqwwUO1Pjr4qDs=
-github.com/robfig/cron/v3 v3.0.1/go.mod h1:eQICP3HwyT7UooqI/z+Ov+PtYAWygg1TEWWzGIFLtro=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.14.0/go.mod h1:MVFd36DqK4CsrnJYDkBA3VC4m2GkXAM0PvzMCn4JQf4=
-golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
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