/
discovery.go
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/
discovery.go
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// Copyright © 2018 Julien SENON <julien.senon@gmail.com>
//
// 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.
// Manage POD Discovery
package kubernetes
import (
"context"
"github.com/rs/zerolog/log"
"github.com/spf13/viper"
"go.opencensus.io/trace"
"k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
)
// PodDiscovery will send IP of API CNI CLeanup POD
func PodDiscovery(ctx context.Context) (pods *v1.PodList, err error) {
ctx, span := trace.StartSpan(ctx, "(*cniserver).K8SExternal")
span.Annotate(nil, "Discover POD")
defer span.End()
log.Debug().Msgf("In Poddiscovery")
var client *kubernetes.Clientset
// case internal or external k8s api
api := viper.GetString("api")
switch api := api; api {
case "internal":
client, err = K8sInternal(ctx)
if err != nil {
log.Error().Msgf("Error Call client connection to k8s internal: %v", err.Error())
span.SetStatus(trace.Status{Code: trace.StatusCodeUnknown, Message: err.Error()})
return nil, err
}
case "external":
client, err = K8SExternal(ctx)
if err != nil {
log.Error().Msgf("Error Call client connection to k8s external: %v ", err.Error())
span.SetStatus(trace.Status{Code: trace.StatusCodeUnknown, Message: err.Error()})
return nil, err
}
default:
log.Fatal().Msg("Error definition api type")
return nil, err
}
// List Pods interface
pods, err = client.CoreV1().Pods("").List(metav1.ListOptions{})
if err != nil {
span.SetStatus(trace.Status{Code: trace.StatusCodeUnknown, Message: err.Error()})
log.Fatal().Msg("Error listing pod")
return nil, err
}
return pods, nil
}