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package ports
import (
"github.com/mitchellh/mapstructure"
"github.com/rackspace/gophercloud"
"github.com/rackspace/gophercloud/pagination"
)
type commonResult struct {
gophercloud.Result
}
// Extract is a function that accepts a result and extracts a port resource.
func (r commonResult) Extract() (*Port, error) {
if r.Err != nil {
return nil, r.Err
}
var res struct {
Port *Port `json:"port"`
}
err := mapstructure.Decode(r.Body, &res)
return res.Port, err
}
// CreateResult represents the result of a create operation.
type CreateResult struct {
commonResult
}
// GetResult represents the result of a get operation.
type GetResult struct {
commonResult
}
// UpdateResult represents the result of an update operation.
type UpdateResult struct {
commonResult
}
// DeleteResult represents the result of a delete operation.
type DeleteResult struct {
gophercloud.ErrResult
}
// IP is a sub-struct that represents an individual IP.
type IP struct {
SubnetID string `mapstructure:"subnet_id" json:"subnet_id"`
IPAddress string `mapstructure:"ip_address" json:"ip_address,omitempty"`
}
type AddressPair struct {
IPAddress string `mapstructure:"ip_address" json:"ip_address,omitempty"`
MACAddress string `mapstructure:"mac_address" json:"mac_address,omitempty"`
}
// Port represents a Neutron port. See package documentation for a top-level
// description of what this is.
type Port struct {
// UUID for the port.
ID string `mapstructure:"id" json:"id"`
// Network that this port is associated with.
NetworkID string `mapstructure:"network_id" json:"network_id"`
// Human-readable name for the port. Might not be unique.
Name string `mapstructure:"name" json:"name"`
// Administrative state of port. If false (down), port does not forward packets.
AdminStateUp bool `mapstructure:"admin_state_up" json:"admin_state_up"`
// Indicates whether network is currently operational. Possible values include
// `ACTIVE', `DOWN', `BUILD', or `ERROR'. Plug-ins might define additional values.
Status string `mapstructure:"status" json:"status"`
// Mac address to use on this port.
MACAddress string `mapstructure:"mac_address" json:"mac_address"`
// Specifies IP addresses for the port thus associating the port itself with
// the subnets where the IP addresses are picked from
FixedIPs []IP `mapstructure:"fixed_ips" json:"fixed_ips"`
// Owner of network. Only admin users can specify a tenant_id other than its own.
TenantID string `mapstructure:"tenant_id" json:"tenant_id"`
// Identifies the entity (e.g.: dhcp agent) using this port.
DeviceOwner string `mapstructure:"device_owner" json:"device_owner"`
// Specifies the IDs of any security groups associated with a port.
SecurityGroups []string `mapstructure:"security_groups" json:"security_groups"`
// Identifies the device (e.g., virtual server) using this port.
DeviceID string `mapstructure:"device_id" json:"device_id"`
// Identifies the list of IP addresses the port will recognize/accept
AllowedAddressPairs []AddressPair `mapstructure:"allowed_address_pairs" json:"allowed_address_pairs"`
}
// PortPage is the page returned by a pager when traversing over a collection
// of network ports.
type PortPage struct {
pagination.LinkedPageBase
}
// NextPageURL is invoked when a paginated collection of ports has reached
// the end of a page and the pager seeks to traverse over a new one. In order
// to do this, it needs to construct the next page's URL.
func (p PortPage) NextPageURL() (string, error) {
type resp struct {
Links []gophercloud.Link `mapstructure:"ports_links"`
}
var r resp
err := mapstructure.Decode(p.Body, &r)
if err != nil {
return "", err
}
return gophercloud.ExtractNextURL(r.Links)
}
// IsEmpty checks whether a PortPage struct is empty.
func (p PortPage) IsEmpty() (bool, error) {
is, err := ExtractPorts(p)
if err != nil {
return true, nil
}
return len(is) == 0, nil
}
// ExtractPorts accepts a Page struct, specifically a PortPage struct,
// and extracts the elements into a slice of Port structs. In other words,
// a generic collection is mapped into a relevant slice.
func ExtractPorts(page pagination.Page) ([]Port, error) {
var resp struct {
Ports []Port `mapstructure:"ports" json:"ports"`
}
err := mapstructure.Decode(page.(PortPage).Body, &resp)
return resp.Ports, err
}
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