Documentation ¶
Overview ¶
Package client implements the northbound client used to manage Calico configuration.
This client is the main entry point for applications that are managing or querying Calico configuration.
This client provides a typed interface for managing different resource types. The definitions for each resource type are defined in the following package:
github.com/mangqiqi/libcalico-go/lib/api
The client has a number of methods that return interfaces for managing:
- BGP Peer resources
- Policy resources
- IP Pool resources
- Host endpoint resources
- Workload endpoint resources
- Profile resources
- IP Address Management (IPAM)
See [resource definitions](http://docs.projectcalico.org/latest/reference/calicoctl/resources/) for details about the set of management commands for each resource type.
The resource management interfaces have a common set of commands to create, delete, update and retrieve resource instances. For example, an application using this client to manage host endpoint resources would create an instance of this client, create a new HostEndpoints interface and call the appropriate methods on that interface. For example:
// NewFromEnv() creates a new client and defaults to access an etcd backend datastore at // http://127.0.0.1:2379. For alternative backend access details, set the appropriate // ENV variables specified in the CalicoAPIConfigSpec structure. client, err := client.NewFromEnv() // Obtain the interface for managing host endpoint resources. hostendpoints := client.HostEndpoints() // Create a new host endpoint. All Create() methods return an error of type // common.ErrorResourceAlreadyExists if the resource specified by its // unique identifiers already exists. hostEndpoint, err := hostEndpoints.Create(&api.HostEndpoint{ Metadata: api.HostEndpointMetadata{ Name: "endpoint1", Nodename: "hostname1", }, Spec: api.HostEndpointSpec{ InterfaceName: "eth0" }, } // Update an existing host endpoint. All Update() methods return an error of type // common.ErrorResourceDoesNotExist if the resource specified by its // unique identifiers does not exist. hostEndpoint, err = hostEndpoints.Update(&api.HostEndpoint{ Metadata: api.HostEndpointMetadata{ Name: "endpoint1", Nodename: "hostname1", }, Spec: api.HostEndpointSpec{ InterfaceName: "eth0", Profiles: []string{"profile1"}, }, } // Apply (update or create) a hostEndpoint. All Apply() methods will update a resource // if it already exists, and will create a new resource if it does not. hostEndpoint, err = hostEndpoints.Apply(&api.HostEndpoint{ Metadata: api.HostEndpointMetadata{ Name: "endpoint1", Nodename: "hostname1", }, Spec: api.HostEndpointSpec{ InterfaceName: "eth1", Profiles: []string{"profile1"}, }, } // Delete a hostEndpoint. All Delete() methods return an error of type // common.ErrorResourceDoesNotExist if the resource specified by its // unique identifiers does not exist. hostEndpoint, err = hostEndpoints.Delete(api.HostEndpointMetadata{ Name: "endpoint1", Nodename: "hostname1", }) // Get a hostEndpoint. All Get() methods return an error of type // common.ErrorResourceDoesNotExist if the resource specified by its // unique identifiers does not exist. hostEndpoint, err = hostEndpoints.Get(api.HostEndpointMetadata{ Name: "endpoint1", Nodename: "hostname1", }) // List all hostEndpoints. All List() methods take a (sub-)set of the resource // identifiers and return the corresponding list resource type that has an // Items field containing a list of resources that match the supplied // identifiers. hostEndpointList, err := hostEndpoints.List(api.HostEndpointMetadata{})
Index ¶
- Constants
- func LoadClientConfig(filename string) (*api.CalicoAPIConfig, error)
- func LoadClientConfigFromBytes(b []byte) (*api.CalicoAPIConfig, error)
- func LoadClientConfigFromEnvironment() (*api.CalicoAPIConfig, error)
- type BGPPeerInterface
- type Client
- func (c *Client) BGPPeers() BGPPeerInterface
- func (c *Client) Config() ConfigInterface
- func (c *Client) EnsureInitialized() error
- func (c *Client) HostEndpoints() HostEndpointInterface
- func (c *Client) IPPools() IPPoolInterface
- func (c *Client) Nodes() NodeInterface
- func (c *Client) Policies() PolicyInterface
- func (c *Client) Profiles() ProfileInterface
- func (c *Client) WorkloadEndpoints() WorkloadEndpointInterface
- type ConfigInterface
- type ConfigLocation
- type HostEndpointInterface
- type IPPoolInterface
- type NodeInterface
- type PolicyInterface
- type ProfileInterface
- type WorkloadEndpointInterface
Constants ¶
const ( GlobalDefaultASNumber = 64512 GlobalDefaultLogLevel = "info" GlobalDefaultIPIP = false GlobalDefaultNodeToNodeMesh = true )
Variables ¶
This section is empty.
Functions ¶
func LoadClientConfig ¶
func LoadClientConfig(filename string) (*api.CalicoAPIConfig, error)
LoadClientConfig loads the ClientConfig from the specified file (if specified) or from environment variables (if the file is not specified).
func LoadClientConfigFromBytes ¶
func LoadClientConfigFromBytes(b []byte) (*api.CalicoAPIConfig, error)
LoadClientConfig loads the ClientConfig from the supplied bytes containing YAML or JSON format data.
func LoadClientConfigFromEnvironment ¶
func LoadClientConfigFromEnvironment() (*api.CalicoAPIConfig, error)
LoadClientConfig loads the ClientConfig from the specified file (if specified) or from environment variables (if the file is not specified).
Types ¶
type BGPPeerInterface ¶
type BGPPeerInterface interface { List(api.BGPPeerMetadata) (*api.BGPPeerList, error) Get(api.BGPPeerMetadata) (*api.BGPPeer, error) Create(*api.BGPPeer) (*api.BGPPeer, error) Update(*api.BGPPeer) (*api.BGPPeer, error) Apply(*api.BGPPeer) (*api.BGPPeer, error) Delete(api.BGPPeerMetadata) error }
BGPPeerInterface has methods to work with BGPPeer resources.
type Client ¶
type Client struct { // The backend client is currently public to allow access to datastore // specific functions that are used by calico/node. This is a temporary // measure and users of the client API should not assume that the backend // will be available in the future. Backend bapi.Client }
Client contains
func New ¶
func New(config apiconfig.CalicoAPIConfig) (*Client, error)
New returns a connected Client. The ClientConfig can either be created explicitly, or can be loaded from a config file or environment variables using the LoadClientConfig() function.
func NewFromEnv ¶ added in v1.2.0
NewFromEnv loads the config from ENV variables and returns a connected Client.
func (*Client) BGPPeers ¶
func (c *Client) BGPPeers() BGPPeerInterface
BGPPeers returns an interface for managing BGP peer resources.
func (*Client) Config ¶
func (c *Client) Config() ConfigInterface
Config returns an interface for managing system configuration..
func (*Client) EnsureInitialized ¶ added in v1.0.1
EnsureInitialized is used to ensure the backend datastore is correctly initialized for use by Calico. This method may be called multiple times, and will have no effect if the datastore is already correctly initialized.
Most Calico deployment scenarios will automatically implicitly invoke this method and so a general consumer of this API can assume that the datastore is already initialized.
func (*Client) HostEndpoints ¶
func (c *Client) HostEndpoints() HostEndpointInterface
HostEndpoints returns an interface for managing host endpoint resources.
func (*Client) IPPools ¶
func (c *Client) IPPools() IPPoolInterface
IPPools returns an interface for managing IP pool resources.
func (*Client) Nodes ¶
func (c *Client) Nodes() NodeInterface
Nodes returns an interface for managing node resources.
func (*Client) Policies ¶
func (c *Client) Policies() PolicyInterface
Policies returns an interface for managing policy resources.
func (*Client) Profiles ¶
func (c *Client) Profiles() ProfileInterface
Profiles returns an interface for managing profile resources.
func (*Client) WorkloadEndpoints ¶
func (c *Client) WorkloadEndpoints() WorkloadEndpointInterface
WorkloadEndpoints returns an interface for managing workload endpoint resources.
type ConfigInterface ¶
type ConfigInterface interface { SetNodeToNodeMesh(bool) error GetNodeToNodeMesh() (bool, error) SetGlobalASNumber(numorstring.ASNumber) error GetGlobalASNumber() (numorstring.ASNumber, error) SetGlobalIPIP(bool) error GetGlobalIPIP() (bool, error) SetNodeIPIPTunnelAddress(string, *net.IP) error GetNodeIPIPTunnelAddress(string) (*net.IP, error) SetGlobalLogLevel(string) error GetGlobalLogLevel() (string, error) SetNodeLogLevel(string, string) error SetNodeLogLevelUseGlobal(string) error GetNodeLogLevel(string) (string, ConfigLocation, error) GetFelixConfig(string, string) (string, bool, error) SetFelixConfig(string, string, string) error UnsetFelixConfig(string, string) error GetBGPConfig(string, string) (string, bool, error) SetBGPConfig(string, string, string) error UnsetBGPConfig(string, string) error }
ConfigInterface provides methods for setting, unsetting and retrieving low level config options.
type ConfigLocation ¶
type ConfigLocation int8
const ( ConfigLocationNone ConfigLocation = iota ConfigLocationNode ConfigLocationGlobal )
type HostEndpointInterface ¶
type HostEndpointInterface interface { // List enumerates host endpoint resources matching the supplied metadata and // wildcarding missing identifiers. List(api.HostEndpointMetadata) (*api.HostEndpointList, error) // Get returns the host endpoint resource matching the supplied metadata. The metadata // should contain all identifiers to uniquely identify a single resource. If the // resource does not exist, an errors.ErrorResourceNotFound error is returned. Get(api.HostEndpointMetadata) (*api.HostEndpoint, error) // Create will create a new host endpoint resource. If the resource already exists, // an errors.ErrorResourceAlreadyExists error is returned. Create(*api.HostEndpoint) (*api.HostEndpoint, error) // Update will update an existing host endpoint resource. If the resource does not exist, // an errors.ErrorResourceDoesNotExist error is returned. Update(*api.HostEndpoint) (*api.HostEndpoint, error) // Apply with update an existing host endpoint resource, or create a new one if it does // not exist. Apply(*api.HostEndpoint) (*api.HostEndpoint, error) // Delete will delete a host endpoint resource. The metadata should contain all identifiers // to uniquely identify a single resource. If the resource does not exist, a // errors.ErrorResourceDoesNotExist error is returned. Delete(api.HostEndpointMetadata) error }
HostEndpointInterface has methods to work with host endpoint resources.
type IPPoolInterface ¶
type IPPoolInterface interface { List(api.IPPoolMetadata) (*api.IPPoolList, error) Get(api.IPPoolMetadata) (*api.IPPool, error) Create(*api.IPPool) (*api.IPPool, error) Update(*api.IPPool) (*api.IPPool, error) Apply(*api.IPPool) (*api.IPPool, error) Delete(api.IPPoolMetadata) error }
PoolInterface has methods to work with Pool resources.
type NodeInterface ¶
type NodeInterface interface { List(api.NodeMetadata) (*api.NodeList, error) Get(api.NodeMetadata) (*api.Node, error) Create(*api.Node) (*api.Node, error) Update(*api.Node) (*api.Node, error) Apply(*api.Node) (*api.Node, error) Delete(api.NodeMetadata) error }
NodeInterface has methods to work with Node resources.
type PolicyInterface ¶
type PolicyInterface interface { List(api.PolicyMetadata) (*api.PolicyList, error) Get(api.PolicyMetadata) (*api.Policy, error) Create(*api.Policy) (*api.Policy, error) Update(*api.Policy) (*api.Policy, error) Apply(*api.Policy) (*api.Policy, error) Delete(api.PolicyMetadata) error }
PolicyInterface has methods to work with Policy resources.
type ProfileInterface ¶
type ProfileInterface interface { List(api.ProfileMetadata) (*api.ProfileList, error) Get(api.ProfileMetadata) (*api.Profile, error) Create(*api.Profile) (*api.Profile, error) Update(*api.Profile) (*api.Profile, error) Apply(*api.Profile) (*api.Profile, error) Delete(api.ProfileMetadata) error }
ProfileInterface has methods to work with Profile resources.
type WorkloadEndpointInterface ¶
type WorkloadEndpointInterface interface { List(api.WorkloadEndpointMetadata) (*api.WorkloadEndpointList, error) Get(api.WorkloadEndpointMetadata) (*api.WorkloadEndpoint, error) Create(*api.WorkloadEndpoint) (*api.WorkloadEndpoint, error) Update(*api.WorkloadEndpoint) (*api.WorkloadEndpoint, error) Apply(*api.WorkloadEndpoint) (*api.WorkloadEndpoint, error) Delete(api.WorkloadEndpointMetadata) error }
WorkloadEndpointInterface has methods to work with WorkloadEndpoint resources.