Esempio n. 1
0
func Start(dir string, port int, tlsCrt, tlsKey, jwtPubKey, jwtPrivateKey string) {
	var err error
	HttpDB, err = db.OpenDB(dir)
	if err != nil {
		panic(err)
	}

	// These endpoints are always available and do not require JWT auth
	http.HandleFunc("/", Welcome)
	http.HandleFunc("/version", Version)
	http.HandleFunc("/memstats", MemStats)

	if jwtPrivateKey != "" {
		// JWT support
		ServeJWTEnabledEndpoints(jwtPubKey, jwtPrivateKey)
	} else {
		// No JWT
		ServeEndpoints()
	}

	if tlsCrt != "" {
		tdlog.Noticef("Will listen on all interfaces (HTTPS), port %d.", port)
		if err := http.ListenAndServeTLS(fmt.Sprintf(":%d", port), tlsCrt, tlsKey, nil); err != nil {
			tdlog.Panicf("Failed to start HTTPS service - %s", err)
		}
	} else {
		tdlog.Noticef("Will listen on all interfaces (HTTP), port %d.", port)
		http.ListenAndServe(fmt.Sprintf(":%d", port), nil)
	}
}
Esempio n. 2
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// Read Linux system VM parameters and print performance configuration advice when necessary.
func linuxPerfAdvice() {
	readFileIntContent := func(filePath string) (contentInt int, err error) {
		content, err := ioutil.ReadFile(filePath)
		if err != nil {
			return
		}
		contentInt, err = strconv.Atoi(strings.TrimSpace(string(content)))
		return
	}
	swappiness, err := readFileIntContent("/proc/sys/vm/swappiness")
	if err != nil {
		tdlog.Notice("Non-fatal - unable to offer performance advice based on vm.swappiness.")
	} else if swappiness > 50 {
		tdlog.Noticef("System vm.swappiness is very high (%d), for optimium performance please lower it to below 50.", swappiness)
	}
	dirtyRatio, err := readFileIntContent("/proc/sys/vm/dirty_ratio")
	if err != nil {
		tdlog.Notice("Non-fatal - unable to offer performance advice based on vm.dirty_ratio.")
	} else if dirtyRatio < 50 {
		tdlog.Noticef("System vm.dirty_ratio is very low (%d), for optimium performance please increase it to above 50.", dirtyRatio)
	}
	dirtyBGRatio, err := readFileIntContent("/proc/sys/vm/dirty_background_ratio")
	if err != nil {
		tdlog.Notice("Non-fatal - unable to offer performance advice based on vm.dirty_background_ratio.")
	} else if dirtyBGRatio < 50 {
		tdlog.Noticef("System vm.dirty_background_ratio is very low (%d), for optimium performance please increase it to above 50.", dirtyBGRatio)
	}
}
Esempio n. 3
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// Copy this database into destination directory (for backup).
func (db *DB) Dump(dest string) error {
	db.schemaLock.Lock()
	defer db.schemaLock.Unlock()
	cpFun := func(currPath string, info os.FileInfo, err error) error {
		if err != nil {
			return err
		}
		if info.IsDir() {
			relPath, err := filepath.Rel(db.path, currPath)
			if err != nil {
				return err
			}
			destDir := path.Join(dest, relPath)
			if err := os.MkdirAll(destDir, 0700); err != nil {
				return err
			}
			tdlog.Noticef("Dump: created directory %s", destDir)
		} else {
			src, err := os.Open(currPath)
			if err != nil {
				return err
			}
			relPath, err := filepath.Rel(db.path, currPath)
			if err != nil {
				return err
			}
			destPath := path.Join(dest, relPath)
			if _, fileExists := os.Open(destPath); fileExists == nil {
				return fmt.Errorf("Destination file %s already exists", destPath)
			}
			destFile, err := os.Create(destPath)
			if err != nil {
				return err
			}
			written, err := io.Copy(destFile, src)
			if err != nil {
				return err
			}
			tdlog.Noticef("Dump: copied file %s, size is %d", destPath, written)
		}
		return nil
	}
	return filepath.Walk(db.path, cpFun)
}
Esempio n. 4
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// Scrub a collection - fix corrupted documents and de-fragment free space.
func (db *DB) Scrub(name string) error {
	db.schemaLock.Lock()
	defer db.schemaLock.Unlock()
	if _, exists := db.cols[name]; !exists {
		return fmt.Errorf("Collection %s does not exist", name)
	}
	// Prepare a temporary collection in file system
	tmpColName := fmt.Sprintf("scrub-%s-%d", name, time.Now().UnixNano())
	tmpColDir := path.Join(db.path, tmpColName)
	if err := os.MkdirAll(tmpColDir, 0700); err != nil {
		return err
	}
	// Mirror indexes from original collection
	for _, idxPath := range db.cols[name].indexPaths {
		if err := os.MkdirAll(path.Join(tmpColDir, strings.Join(idxPath, INDEX_PATH_SEP)), 0700); err != nil {
			return err
		}
	}
	// Iterate through all documents and put them into the temporary collection
	tmpCol, err := OpenCol(db, tmpColName)
	if err != nil {
		return err
	}
	db.cols[name].forEachDoc(func(id int, doc []byte) bool {
		var docObj map[string]interface{}
		if err := json.Unmarshal([]byte(doc), &docObj); err != nil {
			// Skip corrupted document
			return true
		}
		if err := tmpCol.InsertRecovery(id, docObj); err != nil {
			tdlog.Noticef("Scrub %s: failed to insert back document %v", name, docObj)
		}
		return true
	}, false)
	if err := tmpCol.close(); err != nil {
		return err
	}
	// Replace the original collection with the "temporary" one
	db.cols[name].close()
	if err := os.RemoveAll(path.Join(db.path, name)); err != nil {
		return err
	}
	if err := os.Rename(path.Join(db.path, tmpColName), path.Join(db.path, name)); err != nil {
		return err
	}
	if db.cols[name], err = OpenCol(db, name); err != nil {
		return err
	}
	return nil
}
Esempio n. 5
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// Update a document.
func (col *Col) Update(id int, doc map[string]interface{}) error {
	if doc == nil {
		return fmt.Errorf("Updating %d: input doc may not be nil", id)
	}
	docJS, err := json.Marshal(doc)
	if err != nil {
		return err
	}
	col.db.schemaLock.RLock()
	part := col.parts[id%col.db.numParts]
	part.Lock.Lock()
	// Place lock, read back original document and update
	if err := part.LockUpdate(id); err != nil {
		part.Lock.Unlock()
		col.db.schemaLock.RUnlock()
		return err
	}
	originalB, err := part.Read(id)
	if err != nil {
		part.UnlockUpdate(id)
		part.Lock.Unlock()
		col.db.schemaLock.RUnlock()
		return err
	}
	var original map[string]interface{}
	if err = json.Unmarshal(originalB, &original); err != nil {
		tdlog.Noticef("Will not attempt to unindex document %d during update", id)
	}
	if err = part.Update(id, []byte(docJS)); err != nil {
		part.UnlockUpdate(id)
		part.Lock.Unlock()
		col.db.schemaLock.RUnlock()
		return err
	}
	// Done with the collection data, next is to maintain indexed values
	part.Lock.Unlock()
	if original != nil {
		col.unindexDoc(id, original)
	}
	col.indexDoc(id, doc)
	// Done with the document
	part.Lock.Lock()
	part.UnlockUpdate(id)
	part.Lock.Unlock()
	col.db.schemaLock.RUnlock()
	return nil
}
Esempio n. 6
0
// Delete a document.
func (col *Col) Delete(id int) error {
	col.db.schemaLock.RLock()
	part := col.parts[id%col.db.numParts]
	part.Lock.Lock()
	// Place lock, read back original document and delete document
	if err := part.LockUpdate(id); err != nil {
		part.Lock.Unlock()
		col.db.schemaLock.RUnlock()
		return err
	}
	originalB, err := part.Read(id)
	if err != nil {
		part.UnlockUpdate(id)
		part.Lock.Unlock()
		col.db.schemaLock.RUnlock()
		return err
	}
	var original map[string]interface{}
	if err = json.Unmarshal(originalB, &original); err != nil {
		tdlog.Noticef("Will not attempt to unindex document %d during delete", id)
	}
	if err = part.Delete(id); err != nil {
		part.UnlockUpdate(id)
		part.Lock.Unlock()
		col.db.schemaLock.RUnlock()
		return err
	}
	// Done with the collection data, next is to remove indexed values
	part.Lock.Unlock()
	if original != nil {
		col.unindexDoc(id, original)
	}
	part.Lock.Lock()
	part.UnlockUpdate(id)
	part.Lock.Unlock()
	col.db.schemaLock.RUnlock()
	return nil
}
Esempio n. 7
0
func main() {
	var err error
	var defaultMaxprocs int
	if defaultMaxprocs, err = strconv.Atoi(os.Getenv("GOMAXPROCS")); err != nil {
		defaultMaxprocs = runtime.NumCPU()
	}

	// Parse CLI parameters

	// General params
	var mode string
	var maxprocs int
	flag.StringVar(&mode, "mode", "", "[httpd|bench|bench2|example]")
	flag.IntVar(&maxprocs, "gomaxprocs", defaultMaxprocs, "GOMAXPROCS")
	// Debug params
	var profile, debug bool
	flag.BoolVar(&tdlog.VerboseLog, "verbose", false, "Turn verbose logging on/off")
	flag.BoolVar(&profile, "profile", false, "Write profiler results to prof.out")
	flag.BoolVar(&debug, "debug", false, "Dump goroutine stack traces upon receiving interrupt signal")
	// HTTP mode params
	var dir string
	var port int
	var tlsCrt, tlsKey string
	flag.StringVar(&dir, "dir", "", "(HTTP server) database directory")
	flag.IntVar(&port, "port", 8080, "(HTTP server) port number")
	flag.StringVar(&tlsCrt, "tlscrt", "", "(HTTP server) TLS certificate (empty to disable TLS).")
	flag.StringVar(&tlsKey, "tlskey", "", "(HTTP server) TLS certificate key (empty to disable TLS).")

	// HTTP + JWT params
	var jwtPubKey, jwtPrivateKey string
	flag.StringVar(&jwtPubKey, "jwtpubkey", "", "(HTTP JWT server) Public key for signing tokens (empty to disable JWT)")
	flag.StringVar(&jwtPrivateKey, "jwtprivatekey", "", "(HTTP JWT server) Private key for decoding tokens (empty to disable JWT)")

	// Benchmark mode params
	flag.IntVar(&benchSize, "benchsize", 400000, "Benchmark sample size")
	flag.BoolVar(&benchCleanup, "benchcleanup", true, "Whether to clean up (delete benchmark DB) after benchmark")
	flag.Parse()

	// User must specify a mode to run
	if mode == "" {
		flag.PrintDefaults()
		os.Exit(1)
	}

	// Set appropriate GOMAXPROCS
	runtime.GOMAXPROCS(maxprocs)
	tdlog.Noticef("GOMAXPROCS is set to %d", maxprocs)

	// Performance advices
	if maxprocs < runtime.NumCPU() {
		tdlog.Noticef("GOMAXPROCS (%d) is less than number of CPUs (%d), this may reduce performance. You can change it via environment variable GOMAXPROCS or by passing CLI parameter -gomaxprocs", maxprocs, runtime.NumCPU())
	}
	linuxPerfAdvice()

	// Start profiler if enabled
	if profile {
		resultFile, err := os.Create("perf.out")
		if err != nil {
			tdlog.Noticef("Cannot create profiler result file %s", resultFile)
			os.Exit(1)
		}
		pprof.StartCPUProfile(resultFile)
		defer pprof.StopCPUProfile()
	}

	// Dump goroutine stacktraces upon receiving interrupt signal
	if debug {
		c := make(chan os.Signal, 1)
		signal.Notify(c, os.Interrupt)
		go func() {
			for range c {
				pprof.Lookup("goroutine").WriteTo(os.Stderr, 1)
			}
		}()
	}

	switch mode {
	case "httpd":
		// Run HTTP API server
		if dir == "" {
			tdlog.Notice("Please specify database directory, for example -dir=/tmp/db")
			os.Exit(1)
		}
		if port == 0 {
			tdlog.Notice("Please specify port number, for example -port=8080")
			os.Exit(1)
		}
		if tlsCrt != "" && tlsKey == "" || tlsKey != "" && tlsCrt == "" {
			tdlog.Notice("To enable HTTPS, please specify both RSA certificate and key file.")
			os.Exit(1)
		}
		if jwtPrivateKey != "" && jwtPubKey == "" || jwtPubKey != "" && jwtPrivateKey == "" {
			tdlog.Notice("To enable JWT, please specify RSA private and public key.")
			os.Exit(1)
		}
		httpapi.Start(dir, port, tlsCrt, tlsKey, jwtPubKey, jwtPrivateKey)
	case "example":
		// Run embedded usage examples
		embeddedExample()
	case "bench":
		// Benchmark scenarios
		benchmark()
	case "bench2":
		benchmark2()
	default:
		flag.PrintDefaults()
		return
	}
}