Update bleve dependency to latest master revision (#6100)

* update bleve to master b17287a86f6cac923a5d886e10618df994eeb54b6724eac2e3b8dde89cfbe3a2

* remove unused pkg from dep file

* change bleve from master to recent revision

vendor/github.com/blevesearch/bleve/geo/parse.go

@@ -16,6 +16,7 @@ package geo
 
 import (
 	"reflect"
+	"strconv"
 	"strings"
 )
 
@@ -24,6 +25,8 @@ import (
 // Container:
 // slice length 2 (GeoJSON)
 //  first element lon, second element lat
+// string (coordinates separated by comma, or a geohash)
+//  first element lat, second element lon
 // map[string]interface{}
 //  exact keys lat and lon or lng
 // struct
@@ -36,10 +39,14 @@ func ExtractGeoPoint(thing interface{}) (lon, lat float64, success bool) {
 	var foundLon, foundLat bool
 
 	thingVal := reflect.ValueOf(thing)
+	if !thingVal.IsValid() {
+		return lon, lat, false
+	}
+
 	thingTyp := thingVal.Type()
 
 	// is it a slice
-	if thingVal.IsValid() && thingVal.Kind() == reflect.Slice {
+	if thingVal.Kind() == reflect.Slice {
 		// must be length 2
 		if thingVal.Len() == 2 {
 			first := thingVal.Index(0)
@@ -55,6 +62,35 @@ func ExtractGeoPoint(thing interface{}) (lon, lat float64, success bool) {
 		}
 	}
 
+	// is it a string
+	if thingVal.Kind() == reflect.String {
+		geoStr := thingVal.Interface().(string)
+		if strings.Contains(geoStr, ",") {
+			// geo point with coordinates split by comma
+			points := strings.Split(geoStr, ",")
+			for i, point := range points {
+				// trim any leading or trailing white spaces
+				points[i] = strings.TrimSpace(point)
+			}
+			if len(points) == 2 {
+				var err error
+				lat, err = strconv.ParseFloat(points[0], 64)
+				if err == nil {
+					foundLat = true
+				}
+				lon, err = strconv.ParseFloat(points[1], 64)
+				if err == nil {
+					foundLon = true
+				}
+			}
+		} else {
+			// geohash
+			lat, lon = GeoHashDecode(geoStr)
+			foundLat = true
+			foundLon = true
+		}
+	}
+
 	// is it a map
 	if l, ok := thing.(map[string]interface{}); ok {
 		if lval, ok := l["lon"]; ok {
@@ -68,7 +104,7 @@ func ExtractGeoPoint(thing interface{}) (lon, lat float64, success bool) {
 	}
 
 	// now try reflection on struct fields
-	if thingVal.IsValid() && thingVal.Kind() == reflect.Struct {
+	if thingVal.Kind() == reflect.Struct {
 		for i := 0; i < thingVal.NumField(); i++ {
 			fieldName := thingTyp.Field(i).Name
 			if strings.HasPrefix(strings.ToLower(fieldName), "lon") {
@@ -113,6 +149,9 @@ func ExtractGeoPoint(thing interface{}) (lon, lat float64, success bool) {
 // extract numeric value (if possible) and returns a float64
 func extractNumericVal(v interface{}) (float64, bool) {
 	val := reflect.ValueOf(v)
+	if !val.IsValid() {
+		return 0, false
+	}
 	typ := val.Type()
 	switch typ.Kind() {
 	case reflect.Float32, reflect.Float64: