コード例 #1
0
ファイル: blob_get.go プロジェクト: Richardphp/noms
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()
}
コード例 #2
0
ファイル: importer.go プロジェクト: willhite/noms-old
func main() {
	var (
		// 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.")
		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")
		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")
		destTypePattern = regexp.MustCompile("^(list|map):(\\d+)$")
	)

	spec.RegisterDatabaseFlags()
	cpuCount := runtime.NumCPU()
	runtime.GOMAXPROCS(cpuCount)

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

	flag.Parse()

	if flag.NArg() != 2 {
		err := fmt.Errorf("Expected exactly two parameters (dataset and path) after flags, but you have %d. Maybe you put a flag after the path?", flag.NArg())
		util.CheckError(err)
	}

	path := flag.Arg(1)

	defer profile.MaybeStartProfile().Stop()

	res, err := os.Open(path)
	d.Exp.NoError(err)
	defer res.Close()

	comma, err := csv.StringToRune(*delimiter)
	if err != nil {
		util.CheckError(err)
		return
	}

	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.Chk.NoError(err)
	} else {
		fmt.Println("Invalid dest-type: ", *destType)
		return
	}

	fi, err := res.Stat()
	d.Chk.NoError(err)

	var r io.Reader = res
	if !*noProgress {
		r = progressreader.New(r, getStatusPrinter(uint64(fi.Size())))
	}
	cr := csv.NewCSVReader(r, comma)

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

	ds, err := spec.GetDataset(flag.Arg(0))
	util.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())
	}
	_, err = ds.Commit(value)
	if !*noProgress {
		status.Clear()
	}
	d.Exp.NoError(err)
}
コード例 #3
0
ファイル: fetch.go プロジェクト: kalman/noms-pre-release
func main() {
	comment := flag.String("comment", "", "comment to add to commit's meta data")
	spec.RegisterDatabaseFlags(flag.CommandLine)

	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "Fetches a URL (or file) into a noms blob\n\nUsage: %s <url-or-local-path> <dataset>:\n", os.Args[0])
		flag.PrintDefaults()
	}
	flag.Parse(true)

	if flag.NArg() != 2 {
		d.CheckErrorNoUsage(errors.New("expected dataset and url arguments"))
	}

	ds, err := spec.GetDataset(flag.Arg(1))
	d.CheckErrorNoUsage(err)
	defer ds.Database().Close()

	url := flag.Arg(0)
	fileOrUrl := "file"
	start = time.Now()

	var pr io.Reader

	if strings.HasPrefix(url, "http") {
		resp, err := http.Get(url)
		if err != nil {
			fmt.Fprintf(os.Stderr, "Could not fetch url %s, error: %s\n", url, err)
			return
		}

		switch resp.StatusCode / 100 {
		case 4, 5:
			fmt.Fprintf(os.Stderr, "Could not fetch url %s, error: %d (%s)\n", url, resp.StatusCode, resp.Status)
			return
		}

		pr = progressreader.New(resp.Body, getStatusPrinter(resp.ContentLength))
		fileOrUrl = "url"
	} else {
		// assume it's a file
		f, err := os.Open(url)
		if err != nil {
			fmt.Fprintf(os.Stderr, "Invalid URL %s - does not start with 'http' and isn't local file either. fopen error: %s", url, err)
			return
		}

		s, err := f.Stat()
		if err != nil {
			fmt.Fprintf(os.Stderr, "Could not stat file %s: %s", url, err)
			return
		}

		pr = progressreader.New(f, getStatusPrinter(s.Size()))
		fileOrUrl = "file"
	}

	b := types.NewStreamingBlob(pr, ds.Database())
	mi := metaInfoForCommit(fileOrUrl, url, *comment)
	ds, err = ds.Commit(b, dataset.CommitOptions{Meta: mi})
	if err != nil {
		d.Chk.Equal(datas.ErrMergeNeeded, err)
		fmt.Fprintf(os.Stderr, "Could not commit, optimistic concurrency failed.")
		return
	}

	status.Done()
	fmt.Println("Done")
}
コード例 #4
0
ファイル: fetch.go プロジェクト: willhite/noms-old
func main() {
	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "Fetches a URL into a noms blob\n\nUsage: %s <dataset> <url>:\n", os.Args[0])
		flag.PrintDefaults()
	}

	spec.RegisterDatabaseFlags()
	flag.Parse()

	if flag.NArg() != 2 {
		util.CheckError(errors.New("expected dataset and url arguments"))
	}

	ds, err := spec.GetDataset(flag.Arg(0))
	util.CheckError(err)
	defer ds.Database().Close()

	url := flag.Arg(1)
	start = time.Now()

	var pr io.Reader

	if strings.HasPrefix(url, "http") {
		resp, err := http.Get(url)
		if err != nil {
			fmt.Fprintf(os.Stderr, "Could not fetch url %s, error: %s\n", url, err)
			return
		}

		switch resp.StatusCode / 100 {
		case 4, 5:
			fmt.Fprintf(os.Stderr, "Could not fetch url %s, error: %d (%s)\n", url, resp.StatusCode, resp.Status)
			return
		}

		pr = progressreader.New(resp.Body, getStatusPrinter(resp.ContentLength))
	} else {
		// assume it's a file
		f, err := os.Open(url)
		if err != nil {
			fmt.Fprintf(os.Stderr, "Invalid URL %s - does not start with 'http' and isn't local file either. fopen error: %s", url, err)
			return
		}

		s, err := f.Stat()
		if err != nil {
			fmt.Fprintf(os.Stderr, "Could not stat file %s: %s", url, err)
			return
		}

		pr = progressreader.New(f, getStatusPrinter(s.Size()))
	}

	b := types.NewBlob(pr)
	ds, err = ds.Commit(b)
	if err != nil {
		d.Chk.True(datas.ErrMergeNeeded == err)
		fmt.Fprintf(os.Stderr, "Could not commit, optimistic concurrency failed.")
		return
	}

	status.Done()
	fmt.Println("Done")
}
コード例 #5
0
ファイル: importer.go プロジェクト: Richardphp/noms
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)
}
コード例 #6
0
ファイル: fetch.go プロジェクト: Richardphp/noms
func main() {
	comment := flag.String("comment", "", "comment to add to commit's meta data")
	stdin := flag.Bool("stdin", false, "read blob from stdin")

	spec.RegisterDatabaseFlags(flag.CommandLine)

	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "Fetches a URL, file, or stdin into a noms blob\n\nUsage: %s [--stdin?] [url-or-local-path?] [dataset]\n", os.Args[0])
		flag.PrintDefaults()
	}
	flag.Parse(true)

	if !(*stdin && flag.NArg() == 1) && flag.NArg() != 2 {
		flag.Usage()
		os.Exit(-1)
	}

	start = time.Now()

	ds, err := spec.GetDataset(flag.Arg(flag.NArg() - 1))
	d.CheckErrorNoUsage(err)
	defer ds.Database().Close()

	var r io.Reader
	var contentLength int64
	var sourceType, sourceVal string

	if *stdin {
		r = os.Stdin
		contentLength = -1
	} else if url := flag.Arg(0); strings.HasPrefix(url, "http") {
		resp, err := http.Get(url)
		if err != nil {
			fmt.Fprintf(os.Stderr, "Could not fetch url %s, error: %s\n", url, err)
			return
		}

		switch resp.StatusCode / 100 {
		case 4, 5:
			fmt.Fprintf(os.Stderr, "Could not fetch url %s, error: %d (%s)\n", url, resp.StatusCode, resp.Status)
			return
		}

		r = resp.Body
		contentLength = resp.ContentLength
		sourceType, sourceVal = "url", url
	} else {
		// assume it's a file
		f, err := os.Open(url)
		if err != nil {
			fmt.Fprintf(os.Stderr, "Invalid URL %s - does not start with 'http' and isn't local file either. fopen error: %s", url, err)
			return
		}

		s, err := f.Stat()
		if err != nil {
			fmt.Fprintf(os.Stderr, "Could not stat file %s: %s", url, err)
			return
		}

		r = f
		contentLength = s.Size()
		sourceType, sourceVal = "file", url
	}

	pr := progressreader.New(r, getStatusPrinter(contentLength))
	b := types.NewStreamingBlob(pr, ds.Database())
	mi := metaInfoForCommit(sourceType, sourceVal, *comment)
	ds, err = ds.Commit(b, dataset.CommitOptions{Meta: mi})
	if err != nil {
		d.Chk.Equal(datas.ErrMergeNeeded, err)
		fmt.Fprintf(os.Stderr, "Could not commit, optimistic concurrency failed.")
		return
	}

	status.Done()
	fmt.Println("Done")
}