Ejemplo n.º 1
0
func runDs(args []string) int {
	if toDelete != "" {
		set, err := spec.GetDataset(toDelete)
		d.CheckError(err)

		oldCommitRef, errBool := set.MaybeHeadRef()
		if !errBool {
			d.CheckError(fmt.Errorf("Dataset %v not found", set.ID()))
		}

		store, err := set.Database().Delete(set.ID())
		d.CheckError(err)
		defer store.Close()

		fmt.Printf("Deleted dataset %v (was %v)\n\n", set.ID(), oldCommitRef.TargetHash().String())
	} else {
		if len(args) != 1 {
			d.CheckError(fmt.Errorf("Database arg missing"))
		}

		store, err := spec.GetDatabase(args[0])
		d.CheckError(err)
		defer store.Close()

		store.Datasets().IterAll(func(k, v types.Value) {
			fmt.Println(k)
		})
	}
	return 0
}
Ejemplo n.º 2
0
func main() {
	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "usage: %s <url> <dataset>\n", os.Args[0])
		flag.PrintDefaults()
	}

	spec.RegisterDatabaseFlags(flag.CommandLine)
	flag.Parse(true)

	if len(flag.Args()) != 2 {
		d.CheckError(errors.New("expected url and dataset flags"))
	}

	ds, err := spec.GetDataset(flag.Arg(1))
	d.CheckError(err)

	url := flag.Arg(0)
	if url == "" {
		flag.Usage()
	}

	res, err := http.Get(url)
	if err != nil {
		log.Fatalf("Error fetching %s: %+v\n", url, err)
	} else if res.StatusCode != 200 {
		log.Fatalf("Error fetching %s: %s\n", url, res.Status)
	}
	defer res.Body.Close()

	var jsonObject interface{}
	err = json.NewDecoder(res.Body).Decode(&jsonObject)
	if err != nil {
		log.Fatalln("Error decoding JSON: ", err)
	}

	_, err = ds.CommitValue(jsontonoms.NomsValueFromDecodedJSON(jsonObject, true))
	d.PanicIfError(err)
	ds.Database().Close()
}
Ejemplo n.º 3
0
func main() {
	// Actually the delimiter uses runes, which can be multiple characters long.
	// https://blog.golang.org/strings
	delimiter := flag.String("delimiter", ",", "field delimiter for csv file, must be exactly one character long.")

	spec.RegisterDatabaseFlags(flag.CommandLine)
	profile.RegisterProfileFlags(flag.CommandLine)

	flag.Usage = func() {
		fmt.Fprintln(os.Stderr, "Usage: csv-export [options] dataset > filename")
		flag.PrintDefaults()
	}

	flag.Parse(true)

	if flag.NArg() != 1 {
		d.CheckError(errors.New("expected dataset arg"))
	}

	ds, err := spec.GetDataset(flag.Arg(0))
	d.CheckError(err)

	defer ds.Database().Close()

	comma, err := csv.StringToRune(*delimiter)
	d.CheckError(err)

	err = d.Try(func() {
		defer profile.MaybeStartProfile().Stop()

		nomsList, structDesc := csv.ValueToListAndElemDesc(ds.HeadValue(), ds.Database())
		csv.Write(nomsList, structDesc, comma, os.Stdout)
	})
	if err != nil {
		fmt.Println("Failed to export dataset as CSV:")
		fmt.Println(err)
	}
}
Ejemplo n.º 4
0
func main() {
	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "usage: %s <dataset> <file>\n", os.Args[0])
		flag.PrintDefaults()
	}

	spec.RegisterDatabaseFlags(flag.CommandLine)
	flag.Parse(true)

	if len(flag.Args()) != 2 {
		d.CheckError(errors.New("expected dataset and file flags"))
	}

	var blob types.Blob
	path := flag.Arg(0)
	if db, val, err := spec.GetPath(path); err != nil {
		d.CheckErrorNoUsage(err)
	} else if val == nil {
		d.CheckErrorNoUsage(fmt.Errorf("No value at %s", path))
	} else if b, ok := val.(types.Blob); !ok {
		d.CheckErrorNoUsage(fmt.Errorf("Value at %s is not a blob", path))
	} else {
		defer db.Close()
		blob = b
	}

	filePath := flag.Arg(1)
	if filePath == "" {
		d.CheckErrorNoUsage(errors.New("Empty file path"))
	}

	// Note: overwrites any existing file.
	file, err := os.OpenFile(filePath, os.O_WRONLY|os.O_CREATE, 0644)
	d.CheckErrorNoUsage(err)
	defer file.Close()

	expected := humanize.Bytes(blob.Len())
	start := time.Now()

	progReader := progressreader.New(blob.Reader(), func(seen uint64) {
		elapsed := time.Since(start).Seconds()
		rate := uint64(float64(seen) / elapsed)
		status.Printf("%s of %s written in %ds (%s/s)...", humanize.Bytes(seen), expected, int(elapsed), humanize.Bytes(rate))
	})

	io.Copy(file, progReader)
	status.Done()
}
Ejemplo n.º 5
0
func runLog(args []string) int {
	useColor = shouldUseColor()

	database, value, err := spec.GetPath(args[0])
	if err != nil {
		d.CheckErrorNoUsage(err)
	}
	defer database.Close()

	if value == nil {
		d.CheckErrorNoUsage(fmt.Errorf("Object not found: %s", args[0]))
	}

	origCommit, ok := value.(types.Struct)
	if !ok || !datas.IsCommitType(origCommit.Type()) {
		d.CheckError(fmt.Errorf("%s does not reference a Commit object", args[0]))
	}

	iter := NewCommitIterator(database, origCommit)
	displayed := 0
	if maxCommits <= 0 {
		maxCommits = math.MaxInt32
	}

	inChan := make(chan interface{}, parallelism)
	outChan := orderedparallel.New(inChan, func(node interface{}) interface{} {
		buff := &bytes.Buffer{}
		printCommit(node.(LogNode), buff, database)
		return buff.Bytes()
	}, parallelism)

	go func() {
		for ln, ok := iter.Next(); ok && displayed < maxCommits; ln, ok = iter.Next() {
			inChan <- ln
			displayed++
		}
		close(inChan)
	}()

	pgr := outputpager.Start()
	defer pgr.Stop()

	for commitBuff := range outChan {
		io.Copy(pgr.Writer, bytes.NewReader(commitBuff.([]byte)))
	}
	return 0
}
Ejemplo n.º 6
0
func runServe(args []string) int {
	cs, err := spec.GetChunkStore(args[0])
	d.CheckError(err)
	server := datas.NewRemoteDatabaseServer(cs, port)

	// Shutdown server gracefully so that profile may be written
	c := make(chan os.Signal, 1)
	signal.Notify(c, os.Interrupt)
	signal.Notify(c, syscall.SIGTERM)
	go func() {
		<-c
		server.Stop()
	}()

	d.Try(func() {
		defer profile.MaybeStartProfile().Stop()
		server.Run()
	})
	return 0
}
Ejemplo n.º 7
0
func main() {
	err := d.Try(func() {
		spec.RegisterDatabaseFlags(flag.CommandLine)
		profile.RegisterProfileFlags(flag.CommandLine)
		flag.Usage = customUsage
		flag.Parse(true)

		if flag.NArg() != 2 {
			d.CheckError(errors.New("Expected directory path followed by dataset"))
		}
		dir := flag.Arg(0)
		ds, err := spec.GetDataset(flag.Arg(1))
		d.CheckError(err)

		defer profile.MaybeStartProfile().Stop()

		cpuCount := runtime.NumCPU()

		filesChan := make(chan fileIndex, 1024)
		refsChan := make(chan refIndex, 1024)

		getFilePaths := func() {
			index := 0
			err := filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
				d.PanicIfTrue(err != nil, "Cannot traverse directories")
				if !info.IsDir() && filepath.Ext(path) == ".xml" {
					filesChan <- fileIndex{path, index}
					index++
				}

				return nil
			})
			d.PanicIfError(err)
			close(filesChan)
		}

		wg := sync.WaitGroup{}
		importXML := func() {
			expectedType := types.NewMap()
			for f := range filesChan {
				file, err := os.Open(f.path)
				d.PanicIfTrue(err != nil, "Error getting XML")

				xmlObject, err := mxj.NewMapXmlReader(file)
				d.PanicIfTrue(err != nil, "Error decoding XML")
				object := xmlObject.Old()
				file.Close()

				nomsObj := jsontonoms.NomsValueFromDecodedJSON(object, false)
				d.Chk.IsType(expectedType, nomsObj)

				var r types.Ref
				if !*noIO {
					r = ds.Database().WriteValue(nomsObj)
				}

				refsChan <- refIndex{r, f.index}
			}

			wg.Done()
		}

		go getFilePaths()
		for i := 0; i < cpuCount*8; i++ {
			wg.Add(1)
			go importXML()
		}
		go func() {
			wg.Wait()
			close(refsChan) // done converting xml to noms
		}()

		refList := refIndexList{}
		for r := range refsChan {
			refList = append(refList, r)
		}
		sort.Sort(refList)

		refs := make([]types.Value, len(refList))
		for idx, r := range refList {
			refs[idx] = r.ref
		}

		rl := types.NewList(refs...)

		if !*noIO {
			_, err := ds.CommitValue(rl)
			d.PanicIfError(err)
		}
	})

	if err != nil {
		log.Fatal(err)
	}
}
Ejemplo n.º 8
0
func main() {
	// Actually the delimiter uses runes, which can be multiple characters long.
	// https://blog.golang.org/strings
	delimiter := flag.String("delimiter", ",", "field delimiter for csv file, must be exactly one character long.")
	comment := flag.String("comment", "", "comment to add to commit's meta data")
	header := flag.String("header", "", "header row. If empty, we'll use the first row of the file")
	name := flag.String("name", "Row", "struct name. The user-visible name to give to the struct type that will hold each row of data.")
	columnTypes := flag.String("column-types", "", "a comma-separated list of types representing the desired type of each column. if absent all types default to be String")
	pathDescription := "noms path to blob to import"
	path := flag.String("path", "", pathDescription)
	flag.StringVar(path, "p", "", pathDescription)
	dateFlag := flag.String("date", "", fmt.Sprintf(`date of commit in ISO 8601 format ("%s"). By default, the current date is used.`, dateFormat))
	noProgress := flag.Bool("no-progress", false, "prevents progress from being output if true")
	destType := flag.String("dest-type", "list", "the destination type to import to. can be 'list' or 'map:<pk>', where <pk> is the index position (0-based) of the column that is a the unique identifier for the column")
	skipRecords := flag.Uint("skip-records", 0, "number of records to skip at beginning of file")
	destTypePattern := regexp.MustCompile("^(list|map):(\\d+)$")

	spec.RegisterDatabaseFlags(flag.CommandLine)
	profile.RegisterProfileFlags(flag.CommandLine)

	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "Usage: csv-import [options] <csvfile> <dataset>\n\n")
		flag.PrintDefaults()
	}

	flag.Parse(true)

	var err error
	switch {
	case flag.NArg() == 0:
		err = errors.New("Maybe you put options after the dataset?")
	case flag.NArg() == 1 && *path == "":
		err = errors.New("If <csvfile> isn't specified, you must specify a noms path with -p")
	case flag.NArg() == 2 && *path != "":
		err = errors.New("Cannot specify both <csvfile> and a noms path with -p")
	case flag.NArg() > 2:
		err = errors.New("Too many arguments")
	}
	d.CheckError(err)

	var date = *dateFlag
	if date == "" {
		date = time.Now().UTC().Format(dateFormat)
	} else {
		_, err := time.Parse(dateFormat, date)
		d.CheckErrorNoUsage(err)
	}

	defer profile.MaybeStartProfile().Stop()

	var r io.Reader
	var size uint64
	var filePath string
	var dataSetArgN int

	if *path != "" {
		db, val, err := spec.GetPath(*path)
		d.CheckError(err)
		if val == nil {
			d.CheckError(fmt.Errorf("Path %s not found\n", *path))
		}
		blob, ok := val.(types.Blob)
		if !ok {
			d.CheckError(fmt.Errorf("Path %s not a Blob: %s\n", *path, types.EncodedValue(val.Type())))
		}
		defer db.Close()
		r = blob.Reader()
		size = blob.Len()
		dataSetArgN = 0
	} else {
		filePath = flag.Arg(0)
		res, err := os.Open(filePath)
		d.CheckError(err)
		defer res.Close()
		fi, err := res.Stat()
		d.CheckError(err)
		r = res
		size = uint64(fi.Size())
		dataSetArgN = 1
	}

	if !*noProgress {
		r = progressreader.New(r, getStatusPrinter(size))
	}

	comma, err := csv.StringToRune(*delimiter)
	d.CheckErrorNoUsage(err)

	var dest int
	var pk int
	if *destType == "list" {
		dest = destList
	} else if match := destTypePattern.FindStringSubmatch(*destType); match != nil {
		dest = destMap
		pk, err = strconv.Atoi(match[2])
		d.CheckErrorNoUsage(err)
	} else {
		fmt.Println("Invalid dest-type: ", *destType)
		return
	}

	cr := csv.NewCSVReader(r, comma)
	for i := uint(0); i < *skipRecords; i++ {
		cr.Read()
	}

	var headers []string
	if *header == "" {
		headers, err = cr.Read()
		d.PanicIfError(err)
	} else {
		headers = strings.Split(*header, string(comma))
	}

	ds, err := spec.GetDataset(flag.Arg(dataSetArgN))
	d.CheckError(err)
	defer ds.Database().Close()

	kinds := []types.NomsKind{}
	if *columnTypes != "" {
		kinds = csv.StringsToKinds(strings.Split(*columnTypes, ","))
	}

	var value types.Value
	if dest == destList {
		value, _ = csv.ReadToList(cr, *name, headers, kinds, ds.Database())
	} else {
		value = csv.ReadToMap(cr, headers, pk, kinds, ds.Database())
	}
	mi := metaInfoForCommit(date, filePath, *path, *comment)
	_, err = ds.Commit(value, dataset.CommitOptions{Meta: mi})
	if !*noProgress {
		status.Clear()
	}
	d.PanicIfError(err)
}