istio.io/istio@v0.0.0-20240520182934-d79c90f27776/pilot/pkg/xds/util.go (about)

     1  // Copyright Istio Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package xds
    16  
    17  import (
    18  	"fmt"
    19  	"strings"
    20  )
    21  
    22  func atMostNJoin(data []string, limit int) string {
    23  	if limit == 0 || limit == 1 {
    24  		// Assume limit >1, but make sure we dpn't crash if someone does pass those
    25  		return strings.Join(data, ", ")
    26  	}
    27  	if len(data) == 0 {
    28  		return ""
    29  	}
    30  	if len(data) < limit {
    31  		return strings.Join(data, ", ")
    32  	}
    33  	return strings.Join(data[:limit-1], ", ") + fmt.Sprintf(", and %d others", len(data)-limit+1)
    34  }