github.com/timstclair/heapster@v0.20.0-alpha1/Godeps/_workspace/src/k8s.io/kubernetes/pkg/client/unversioned/nodes.go (about)

     1  /*
     2  Copyright 2014 The Kubernetes Authors All rights reserved.
     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 unversioned
    18  
    19  import (
    20  	"fmt"
    21  
    22  	"k8s.io/kubernetes/pkg/api"
    23  	"k8s.io/kubernetes/pkg/fields"
    24  	"k8s.io/kubernetes/pkg/labels"
    25  	"k8s.io/kubernetes/pkg/watch"
    26  )
    27  
    28  type NodesInterface interface {
    29  	Nodes() NodeInterface
    30  }
    31  
    32  type NodeInterface interface {
    33  	Get(name string) (result *api.Node, err error)
    34  	Create(node *api.Node) (*api.Node, error)
    35  	List(label labels.Selector, field fields.Selector) (*api.NodeList, error)
    36  	Delete(name string) error
    37  	Update(*api.Node) (*api.Node, error)
    38  	UpdateStatus(*api.Node) (*api.Node, error)
    39  	Watch(label labels.Selector, field fields.Selector, opts api.ListOptions) (watch.Interface, error)
    40  }
    41  
    42  // nodes implements NodesInterface
    43  type nodes struct {
    44  	r *Client
    45  }
    46  
    47  // newNodes returns a nodes object.
    48  func newNodes(c *Client) *nodes {
    49  	return &nodes{c}
    50  }
    51  
    52  // resourceName returns node's URL resource name.
    53  func (c *nodes) resourceName() string {
    54  	return "nodes"
    55  }
    56  
    57  // Create creates a new node.
    58  func (c *nodes) Create(node *api.Node) (*api.Node, error) {
    59  	result := &api.Node{}
    60  	err := c.r.Post().Resource(c.resourceName()).Body(node).Do().Into(result)
    61  	return result, err
    62  }
    63  
    64  // List takes a selector, and returns the list of nodes that match that selector in the cluster.
    65  func (c *nodes) List(label labels.Selector, field fields.Selector) (*api.NodeList, error) {
    66  	result := &api.NodeList{}
    67  	err := c.r.Get().Resource(c.resourceName()).LabelsSelectorParam(label).FieldsSelectorParam(field).Do().Into(result)
    68  	return result, err
    69  }
    70  
    71  // Get gets an existing node.
    72  func (c *nodes) Get(name string) (*api.Node, error) {
    73  	result := &api.Node{}
    74  	err := c.r.Get().Resource(c.resourceName()).Name(name).Do().Into(result)
    75  	return result, err
    76  }
    77  
    78  // Delete deletes an existing node.
    79  func (c *nodes) Delete(name string) error {
    80  	return c.r.Delete().Resource(c.resourceName()).Name(name).Do().Error()
    81  }
    82  
    83  // Update updates an existing node.
    84  func (c *nodes) Update(node *api.Node) (*api.Node, error) {
    85  	result := &api.Node{}
    86  	if len(node.ResourceVersion) == 0 {
    87  		err := fmt.Errorf("invalid update object, missing resource version: %v", node)
    88  		return nil, err
    89  	}
    90  	err := c.r.Put().Resource(c.resourceName()).Name(node.Name).Body(node).Do().Into(result)
    91  	return result, err
    92  }
    93  
    94  func (c *nodes) UpdateStatus(node *api.Node) (*api.Node, error) {
    95  	result := &api.Node{}
    96  	if len(node.ResourceVersion) == 0 {
    97  		err := fmt.Errorf("invalid update object, missing resource version: %v", node)
    98  		return nil, err
    99  	}
   100  	err := c.r.Put().Resource(c.resourceName()).Name(node.Name).SubResource("status").Body(node).Do().Into(result)
   101  	return result, err
   102  }
   103  
   104  // Watch returns a watch.Interface that watches the requested nodes.
   105  func (c *nodes) Watch(label labels.Selector, field fields.Selector, opts api.ListOptions) (watch.Interface, error) {
   106  	return c.r.Get().
   107  		Prefix("watch").
   108  		Namespace(api.NamespaceAll).
   109  		Resource(c.resourceName()).
   110  		VersionedParams(&opts, api.Scheme).
   111  		LabelsSelectorParam(label).
   112  		FieldsSelectorParam(field).
   113  		Watch()
   114  }