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config.go
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config.go
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// Copyright 2017 Authors of Cilium
//
// 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 k8s abstracts all Kubernetes specific behaviour
package k8s
import (
"os"
"strings"
)
var (
// config is the configuration of Kubernetes related settings
config configuration
)
type configuration struct {
// APIServer is the address of the API server
APIServer string
// KubeconfigPath is the local path to the kubeconfig configuration
// file on the filesystem
KubeconfigPath string
}
// GetAPIServer returns the configured API server address
func GetAPIServer() string {
return config.APIServer
}
// GetKubeconfigPath returns the configured path to the kubeconfig
// configuration file
func GetKubeconfigPath() string {
return config.KubeconfigPath
}
// Configure sets the parameters of the Kubernetes package
func Configure(apiServer, kubeconfigPath string) {
config.APIServer = apiServer
config.KubeconfigPath = kubeconfigPath
if IsEnabled() &&
config.APIServer != "" &&
!strings.HasPrefix(apiServer, "http") {
config.APIServer = "http://" + apiServer
}
}
// IsEnabled checks if Cilium is being used in tandem with Kubernetes.
func IsEnabled() bool {
return config.APIServer != "" ||
config.KubeconfigPath != "" ||
(os.Getenv("KUBERNETES_SERVICE_HOST") != "" &&
os.Getenv("KUBERNETES_SERVICE_PORT") != "")
}