[VOL-4290] Voltha go library updates for gRPC migration
Change-Id: I1aa2774beb6b7ed7419bc45aeb53fcae8a8ecda0
diff --git a/vendor/github.com/prometheus/procfs/internal/util/valueparser.go b/vendor/github.com/prometheus/procfs/internal/util/valueparser.go
new file mode 100644
index 0000000..fe2355d
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/internal/util/valueparser.go
@@ -0,0 +1,91 @@
+// Copyright 2019 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package util
+
+import (
+ "strconv"
+)
+
+// TODO(mdlayher): util packages are an anti-pattern and this should be moved
+// somewhere else that is more focused in the future.
+
+// A ValueParser enables parsing a single string into a variety of data types
+// in a concise and safe way. The Err method must be invoked after invoking
+// any other methods to ensure a value was successfully parsed.
+type ValueParser struct {
+ v string
+ err error
+}
+
+// NewValueParser creates a ValueParser using the input string.
+func NewValueParser(v string) *ValueParser {
+ return &ValueParser{v: v}
+}
+
+// Int interprets the underlying value as an int and returns that value.
+func (vp *ValueParser) Int() int { return int(vp.int64()) }
+
+// PInt64 interprets the underlying value as an int64 and returns a pointer to
+// that value.
+func (vp *ValueParser) PInt64() *int64 {
+ if vp.err != nil {
+ return nil
+ }
+
+ v := vp.int64()
+ return &v
+}
+
+// int64 interprets the underlying value as an int64 and returns that value.
+// TODO: export if/when necessary.
+func (vp *ValueParser) int64() int64 {
+ if vp.err != nil {
+ return 0
+ }
+
+ // A base value of zero makes ParseInt infer the correct base using the
+ // string's prefix, if any.
+ const base = 0
+ v, err := strconv.ParseInt(vp.v, base, 64)
+ if err != nil {
+ vp.err = err
+ return 0
+ }
+
+ return v
+}
+
+// PUInt64 interprets the underlying value as an uint64 and returns a pointer to
+// that value.
+func (vp *ValueParser) PUInt64() *uint64 {
+ if vp.err != nil {
+ return nil
+ }
+
+ // A base value of zero makes ParseInt infer the correct base using the
+ // string's prefix, if any.
+ const base = 0
+ v, err := strconv.ParseUint(vp.v, base, 64)
+ if err != nil {
+ vp.err = err
+ return nil
+ }
+
+ return &v
+}
+
+// Err returns the last error, if any, encountered by the ValueParser.
+func (vp *ValueParser) Err() error {
+ return vp.err
+}