github.com/mirantis/virtlet@v1.5.2-0.20191204181327-1659b8a48e9b/pkg/cni/result.go (about)

     1  /*
     2  Copyright 2016 Mirantis
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package cni
    18  
    19  import (
    20  	cnicurrent "github.com/containernetworking/cni/pkg/types/current"
    21  )
    22  
    23  // GetPodIP retrieves the IP address of the pod as a string. It uses
    24  // the first IPv4 address if finds. If it fails to determine the pod
    25  // IP or the result argument is nil, it returns an empty string.
    26  func GetPodIP(result *cnicurrent.Result) string {
    27  	if result == nil {
    28  		return ""
    29  	}
    30  	for _, ip := range result.IPs {
    31  		if ip.Version == "4" {
    32  			return ip.Address.IP.String()
    33  		}
    34  	}
    35  	return ""
    36  }