// Update updates an existing node api object
// by looking up the given hostname.
// The updated node merges the given slave attribute labels
// and annotations with the found api object.
func Update(
client *clientset.Clientset,
hostname string,
slaveAttrLabels,
annotations map[string]string,
) (n *api.Node, err error) {
for i := 0; i < clientRetryCount; i++ {
n, err = client.Nodes().Get(hostname)
if err != nil {
return nil, fmt.Errorf("error getting node %q: %v", hostname, err)
}
if n == nil {
return nil, fmt.Errorf("no node instance returned for %q", hostname)
}
// update labels derived from Mesos slave attributes, keep all other labels
n.Labels = mergeMaps(
filterMap(n.Labels, IsNotSlaveAttributeLabel),
slaveAttrLabels,
)
n.Annotations = mergeMaps(n.Annotations, annotations)
n, err = client.Nodes().Update(n)
if err == nil && !errors.IsConflict(err) {
return n, nil
}
log.Infof("retry %d/%d: error updating node %v err %v", i, clientRetryCount, n, err)
time.Sleep(time.Duration(i) * clientRetryInterval)
}
return nil, err
}
// Create creates a new node api object with the given hostname,
// slave attribute labels and annotations
func Create(
client *clientset.Clientset,
hostName string,
slaveAttrLabels,
annotations map[string]string,
) (*api.Node, error) {
n := api.Node{
ObjectMeta: api.ObjectMeta{
Name: hostName,
},
Spec: api.NodeSpec{
ExternalID: hostName,
},
Status: api.NodeStatus{
Phase: api.NodePending,
// WORKAROUND(sttts): make sure that the Ready condition is the
// first one. The kube-ui v3 depends on this assumption.
// TODO(sttts): remove this workaround when kube-ui v4 is used or we
// merge this with the statusupdate in the controller manager.
Conditions: []api.NodeCondition{
{
Type: api.NodeReady,
Status: api.ConditionTrue,
Reason: slaveReadyReason,
Message: slaveReadyMessage,
LastHeartbeatTime: unversioned.Now(),
},
},
},
}
n.Labels = mergeMaps(
map[string]string{"kubernetes.io/hostname": hostName},
slaveAttrLabels,
)
n.Annotations = annotations
// try to create
return client.Nodes().Create(&n)
}