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// Copyright 2016-2017 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 node
import (
"os"
"github.com/cilium/cilium/pkg/logging/logfields"
)
var (
nodeName = "localhost"
)
// SetName sets the name of the local node. This will overwrite the value that
// is automatically retrieved with `os.Hostname()`.
//
// Note: This function is currently designed to only be called during the
// bootstrapping procedure of the agent where no parallelism exists. If you
// want to use this function in later stages, a mutex must be added first.
func SetName(name string) {
nodeName = name
}
// GetName returns the name of the local node. The value returned was either
// previously set with SetName(), retrieved via `os.Hostname()`, or as a last
// resort is hardcoded to "localhost".
func GetName() string {
return nodeName
}
func init() {
if h, err := os.Hostname(); err != nil {
log.WithError(err).Warn("Unable to retrieve local hostname")
} else {
log.WithField(logfields.NodeName, h).Debug("os.Hostname() returned")
nodeName = h
}
}
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