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package groups
import (
"github.com/mitchellh/mapstructure"
"github.com/rackspace/gophercloud"
"github.com/rackspace/gophercloud/openstack/networking/v2/extensions/security/rules"
"github.com/rackspace/gophercloud/pagination"
)
// SecGroup represents a container for security group rules.
type SecGroup struct {
// The UUID for the security group.
ID string
// Human-readable name for the security group. Might not be unique. Cannot be
// named "default" as that is automatically created for a tenant.
Name string
// The security group description.
Description string
// A slice of security group rules that dictate the permitted behaviour for
// traffic entering and leaving the group.
Rules []rules.SecGroupRule `json:"security_group_rules" mapstructure:"security_group_rules"`
// Owner of the security group. Only admin users can specify a TenantID
// other than their own.
TenantID string `json:"tenant_id" mapstructure:"tenant_id"`
}
// SecGroupPage is the page returned by a pager when traversing over a
// collection of security groups.
type SecGroupPage struct {
pagination.LinkedPageBase
}
// NextPageURL is invoked when a paginated collection of security groups 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 SecGroupPage) NextPageURL() (string, error) {
type resp struct {
Links []gophercloud.Link `mapstructure:"security_groups_links"`
}
var r resp
err := mapstructure.Decode(p.Body, &r)
if err != nil {
return "", err
}
return gophercloud.ExtractNextURL(r.Links)
}
// IsEmpty checks whether a SecGroupPage struct is empty.
func (p SecGroupPage) IsEmpty() (bool, error) {
is, err := ExtractGroups(p)
if err != nil {
return true, nil
}
return len(is) == 0, nil
}
// ExtractGroups accepts a Page struct, specifically a SecGroupPage struct,
// and extracts the elements into a slice of SecGroup structs. In other words,
// a generic collection is mapped into a relevant slice.
func ExtractGroups(page pagination.Page) ([]SecGroup, error) {
var resp struct {
SecGroups []SecGroup `mapstructure:"security_groups" json:"security_groups"`
}
err := mapstructure.Decode(page.(SecGroupPage).Body, &resp)
return resp.SecGroups, err
}
type commonResult struct {
gophercloud.Result
}
// Extract is a function that accepts a result and extracts a security group.
func (r commonResult) Extract() (*SecGroup, error) {
if r.Err != nil {
return nil, r.Err
}
var res struct {
SecGroup *SecGroup `mapstructure:"security_group" json:"security_group"`
}
err := mapstructure.Decode(r.Body, &res)
return res.SecGroup, 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
}
// DeleteResult represents the result of a delete operation.
type DeleteResult struct {
gophercloud.ErrResult
}
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