.travis, build: autodelete old unstable archives (#13867)

This commit adds a build step to travis to auto-delete unstable archives older than
14 days (our regular release schedule) from Azure via ci.go purge.

The commit also pulls in the latest Azure storage code, also switching over from
the old import path (github.com/Azure/azure-sdk-for-go) to the new split one
(github.com/Azure/azure-storage-go).

1 files changed, 178 insertions, 0 deletions

diff --git a/vendor/github.com/Azure/go-autorest/autorest/utility.go b/vendor/github.com/Azure/go-autorest/autorest/utility.go
new file mode 100644
index 000000000..78067148b
--- /dev/null
+++ b/vendor/github.com/Azure/go-autorest/autorest/utility.go
@@ -0,0 +1,178 @@
+package autorest
+
+import (
+	"bytes"
+	"encoding/json"
+	"encoding/xml"
+	"fmt"
+	"io"
+	"net/url"
+	"reflect"
+	"sort"
+	"strings"
+)
+
+// EncodedAs is a series of constants specifying various data encodings
+type EncodedAs string
+
+const (
+	// EncodedAsJSON states that data is encoded as JSON
+	EncodedAsJSON EncodedAs = "JSON"
+
+	// EncodedAsXML states that data is encoded as Xml
+	EncodedAsXML EncodedAs = "XML"
+)
+
+// Decoder defines the decoding method json.Decoder and xml.Decoder share
+type Decoder interface {
+	Decode(v interface{}) error
+}
+
+// NewDecoder creates a new decoder appropriate to the passed encoding.
+// encodedAs specifies the type of encoding and r supplies the io.Reader containing the
+// encoded data.
+func NewDecoder(encodedAs EncodedAs, r io.Reader) Decoder {
+	if encodedAs == EncodedAsJSON {
+		return json.NewDecoder(r)
+	} else if encodedAs == EncodedAsXML {
+		return xml.NewDecoder(r)
+	}
+	return nil
+}
+
+// CopyAndDecode decodes the data from the passed io.Reader while making a copy. Having a copy
+// is especially useful if there is a chance the data will fail to decode.
+// encodedAs specifies the expected encoding, r provides the io.Reader to the data, and v
+// is the decoding destination.
+func CopyAndDecode(encodedAs EncodedAs, r io.Reader, v interface{}) (bytes.Buffer, error) {
+	b := bytes.Buffer{}
+	return b, NewDecoder(encodedAs, io.TeeReader(r, &b)).Decode(v)
+}
+
+// TeeReadCloser returns a ReadCloser that writes to w what it reads from rc.
+// It utilizes io.TeeReader to copy the data read and has the same behavior when reading.
+// Further, when it is closed, it ensures that rc is closed as well.
+func TeeReadCloser(rc io.ReadCloser, w io.Writer) io.ReadCloser {
+	return &teeReadCloser{rc, io.TeeReader(rc, w)}
+}
+
+type teeReadCloser struct {
+	rc io.ReadCloser
+	r  io.Reader
+}
+
+func (t *teeReadCloser) Read(p []byte) (int, error) {
+	return t.r.Read(p)
+}
+
+func (t *teeReadCloser) Close() error {
+	return t.rc.Close()
+}
+
+func containsInt(ints []int, n int) bool {
+	for _, i := range ints {
+		if i == n {
+			return true
+		}
+	}
+	return false
+}
+
+func escapeValueStrings(m map[string]string) map[string]string {
+	for key, value := range m {
+		m[key] = url.QueryEscape(value)
+	}
+	return m
+}
+
+func ensureValueStrings(mapOfInterface map[string]interface{}) map[string]string {
+	mapOfStrings := make(map[string]string)
+	for key, value := range mapOfInterface {
+		mapOfStrings[key] = ensureValueString(value)
+	}
+	return mapOfStrings
+}
+
+func ensureValueString(value interface{}) string {
+	if value == nil {
+		return ""
+	}
+	switch v := value.(type) {
+	case string:
+		return v
+	case []byte:
+		return string(v)
+	default:
+		return fmt.Sprintf("%v", v)
+	}
+}
+
+// MapToValues method converts map[string]interface{} to url.Values.
+func MapToValues(m map[string]interface{}) url.Values {
+	v := url.Values{}
+	for key, value := range m {
+		x := reflect.ValueOf(value)
+		if x.Kind() == reflect.Array || x.Kind() == reflect.Slice {
+			for i := 0; i < x.Len(); i++ {
+				v.Add(key, ensureValueString(x.Index(i)))
+			}
+		} else {
+			v.Add(key, ensureValueString(value))
+		}
+	}
+	return v
+}
+
+// String method converts interface v to string. If interface is a list, it
+// joins list elements using separator.
+func String(v interface{}, sep ...string) string {
+	if len(sep) > 0 {
+		return ensureValueString(strings.Join(v.([]string), sep[0]))
+	}
+	return ensureValueString(v)
+}
+
+// Encode method encodes url path and query parameters.
+func Encode(location string, v interface{}, sep ...string) string {
+	s := String(v, sep...)
+	switch strings.ToLower(location) {
+	case "path":
+		return pathEscape(s)
+	case "query":
+		return queryEscape(s)
+	default:
+		return s
+	}
+}
+
+func pathEscape(s string) string {
+	return strings.Replace(url.QueryEscape(s), "+", "%20", -1)
+}
+
+func queryEscape(s string) string {
+	return url.QueryEscape(s)
+}
+
+// This method is same as Encode() method of "net/url" go package,
+// except it does not encode the query parameters because they
+// already come encoded. It formats values map in query format (bar=foo&a=b).
+func createQuery(v url.Values) string {
+	var buf bytes.Buffer
+	keys := make([]string, 0, len(v))
+	for k := range v {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	for _, k := range keys {
+		vs := v[k]
+		prefix := url.QueryEscape(k) + "="
+		for _, v := range vs {
+			if buf.Len() > 0 {
+				buf.WriteByte('&')
+			}
+			buf.WriteString(prefix)
+			buf.WriteString(v)
+		}
+	}
+	return buf.String()
+}