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package networks
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 network resource.
func (r commonResult) Extract() (*Network, error) {
if r.Err != nil {
return nil, r.Err
}
var res struct {
Network *Network `json:"network"`
}
err := mapstructure.Decode(r.Body, &res)
return res.Network, 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
}
// Network represents, well, a network.
type Network struct {
// UUID for the network
ID string `mapstructure:"id" json:"id"`
// Human-readable name for the network. Might not be unique.
Name string `mapstructure:"name" json:"name"`
// The administrative state of network. If false (down), the network 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"`
// Subnets associated with this network.
Subnets []string `mapstructure:"subnets" json:"subnets"`
// Owner of network. Only admin users can specify a tenant_id other than its own.
TenantID string `mapstructure:"tenant_id" json:"tenant_id"`
// Specifies whether the network resource can be accessed by any tenant or not.
Shared bool `mapstructure:"shared" json:"shared"`
}
// NetworkPage is the page returned by a pager when traversing over a
// collection of networks.
type NetworkPage struct {
pagination.LinkedPageBase
}
// NextPageURL is invoked when a paginated collection of networks 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 NetworkPage) NextPageURL() (string, error) {
type resp struct {
Links []gophercloud.Link `mapstructure:"networks_links"`
}
var r resp
err := mapstructure.Decode(p.Body, &r)
if err != nil {
return "", err
}
return gophercloud.ExtractNextURL(r.Links)
}
// IsEmpty checks whether a NetworkPage struct is empty.
func (p NetworkPage) IsEmpty() (bool, error) {
is, err := ExtractNetworks(p)
if err != nil {
return true, nil
}
return len(is) == 0, nil
}
// ExtractNetworks accepts a Page struct, specifically a NetworkPage struct,
// and extracts the elements into a slice of Network structs. In other words,
// a generic collection is mapped into a relevant slice.
func ExtractNetworks(page pagination.Page) ([]Network, error) {
var resp struct {
Networks []Network `mapstructure:"networks" json:"networks"`
}
err := mapstructure.Decode(page.(NetworkPage).Body, &resp)
return resp.Networks, err
}
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