Move deps from _workspace/ to vendor/

godep restore
pushd $GOPATH/src/github.com/appc/spec
git co master
popd
go get go4.org/errorutil
rm -rf Godeps
godep save ./...
git add vendor
git add -f $(git ls-files --other vendor/)
git co -- Godeps/LICENSES Godeps/.license_file_state Godeps/OWNERS

vendor/github.com/hawkular/hawkular-client-go/metrics/helpers.go

@@ -0,0 +1,50 @@
+package metrics
+
+import (
+	"fmt"
+	"math"
+	"strconv"
+	"time"
+)
+
+func ConvertToFloat64(v interface{}) (float64, error) {
+	switch i := v.(type) {
+	case float64:
+		return float64(i), nil
+	case float32:
+		return float64(i), nil
+	case int64:
+		return float64(i), nil
+	case int32:
+		return float64(i), nil
+	case int16:
+		return float64(i), nil
+	case int8:
+		return float64(i), nil
+	case uint64:
+		return float64(i), nil
+	case uint32:
+		return float64(i), nil
+	case uint16:
+		return float64(i), nil
+	case uint8:
+		return float64(i), nil
+	case int:
+		return float64(i), nil
+	case uint:
+		return float64(i), nil
+	case string:
+		f, err := strconv.ParseFloat(i, 64)
+		if err != nil {
+			return math.NaN(), err
+		}
+		return f, err
+	default:
+		return math.NaN(), fmt.Errorf("Cannot convert %s to float64", i)
+	}
+}
+
+// Returns milliseconds since epoch
+func UnixMilli(t time.Time) int64 {
+	return t.UnixNano() / 1e6
+}