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results.go
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package lbs
import (
"reflect"
"time"
"github.com/mitchellh/mapstructure"
"github.com/rackspace/gophercloud"
"github.com/rackspace/gophercloud/pagination"
"github.com/rackspace/gophercloud/rackspace/lb/v1/acl"
"github.com/rackspace/gophercloud/rackspace/lb/v1/nodes"
"github.com/rackspace/gophercloud/rackspace/lb/v1/sessions"
"github.com/rackspace/gophercloud/rackspace/lb/v1/throttle"
"github.com/rackspace/gophercloud/rackspace/lb/v1/vips"
)
// Protocol represents the network protocol which the load balancer accepts.
type Protocol struct {
// The name of the protocol, e.g. HTTP, LDAP, FTP, etc.
Name string
// The port number for the protocol.
Port int
}
// Algorithm defines how traffic should be directed between back-end nodes.
type Algorithm struct {
// The name of the algorithm, e.g RANDOM, ROUND_ROBIN, etc.
Name string
}
// Status represents the potential state of a load balancer resource.
type Status string
const (
// ACTIVE indicates that the LB is configured properly and ready to serve
// traffic to incoming requests via the configured virtual IPs.
ACTIVE Status = "ACTIVE"
// BUILD indicates that the LB is being provisioned for the first time and
// configuration is being applied to bring the service online. The service
// cannot yet serve incoming requests.
BUILD Status = "BUILD"
// PENDINGUPDATE indicates that the LB is online but configuration changes
// are being applied to update the service based on a previous request.
PENDINGUPDATE Status = "PENDING_UPDATE"
// PENDINGDELETE indicates that the LB is online but configuration changes
// are being applied to begin deletion of the service based on a previous
// request.
PENDINGDELETE Status = "PENDING_DELETE"
// SUSPENDED indicates that the LB has been taken offline and disabled.
SUSPENDED Status = "SUSPENDED"
// ERROR indicates that the system encountered an error when attempting to
// configure the load balancer.
ERROR Status = "ERROR"
// DELETED indicates that the LB has been deleted.
DELETED Status = "DELETED"
)
// Datetime represents the structure of a Created or Updated field.
type Datetime struct {
Time time.Time `mapstructure:"-"`
}
// LoadBalancer represents a load balancer API resource.
type LoadBalancer struct {
// Human-readable name for the load balancer.
Name string
// The unique ID for the load balancer.
ID int
// Represents the service protocol being load balanced. See Protocol type for
// a list of accepted values.
// See http://docs.rackspace.com/loadbalancers/api/v1.0/clb-devguide/content/protocols.html
// for a full list of supported protocols.
Protocol string
// Defines how traffic should be directed between back-end nodes. The default
// algorithm is RANDOM. See Algorithm type for a list of accepted values.
Algorithm string
// The current status of the load balancer.
Status Status
// The number of load balancer nodes.
NodeCount int `mapstructure:"nodeCount"`
// Slice of virtual IPs associated with this load balancer.
VIPs []vips.VIP `mapstructure:"virtualIps"`
// Datetime when the LB was created.
Created Datetime
// Datetime when the LB was created.
Updated Datetime
// Port number for the service you are load balancing.
Port int
// HalfClosed provides the ability for one end of the connection to
// terminate its output while still receiving data from the other end. This
// is only available on TCP/TCP_CLIENT_FIRST protocols.
HalfClosed bool
// Timeout represents the timeout value between a load balancer and its
// nodes. Defaults to 30 seconds with a maximum of 120 seconds.
Timeout int
// The cluster name.
Cluster Cluster
// Nodes shows all the back-end nodes which are associated with the load
// balancer. These are the devices which are delivered traffic.
Nodes []nodes.Node
// Current connection logging configuration.
ConnectionLogging ConnectionLogging
// SessionPersistence specifies whether multiple requests from clients are
// directed to the same node.
SessionPersistence sessions.SessionPersistence
// ConnectionThrottle specifies a limit on the number of connections per IP
// address to help mitigate malicious or abusive traffic to your applications.
ConnectionThrottle throttle.ConnectionThrottle
// The source public and private IP addresses.
SourceAddrs SourceAddrs `mapstructure:"sourceAddresses"`
// Represents the access rules for this particular load balancer. IP addresses
// or subnet ranges, depending on their type (ALLOW or DENY), can be permitted
// or blocked.
AccessList acl.AccessList
}
// SourceAddrs represents the source public and private IP addresses.
type SourceAddrs struct {
IPv4Public string `json:"ipv4Public" mapstructure:"ipv4Public"`
IPv4Private string `json:"ipv4Servicenet" mapstructure:"ipv4Servicenet"`
IPv6Public string `json:"ipv6Public" mapstructure:"ipv6Public"`
IPv6Private string `json:"ipv6Servicenet" mapstructure:"ipv6Servicenet"`
}
// ConnectionLogging - temp
type ConnectionLogging struct {
Enabled bool
}
// Cluster - temp
type Cluster struct {
Name string
}
// LBPage is the page returned by a pager when traversing over a collection of
// LBs.
type LBPage struct {
pagination.LinkedPageBase
}
// IsEmpty checks whether a NetworkPage struct is empty.
func (p LBPage) IsEmpty() (bool, error) {
is, err := ExtractLBs(p)
if err != nil {
return true, nil
}
return len(is) == 0, nil
}
// ExtractLBs accepts a Page struct, specifically a LBPage struct, and extracts
// the elements into a slice of LoadBalancer structs. In other words, a generic
// collection is mapped into a relevant slice.
func ExtractLBs(page pagination.Page) ([]LoadBalancer, error) {
var resp struct {
LBs []LoadBalancer `mapstructure:"loadBalancers" json:"loadBalancers"`
}
coll := page.(LBPage).Body
err := mapstructure.Decode(coll, &resp)
s := reflect.ValueOf(coll.(map[string]interface{})["loadBalancers"])
for i := 0; i < s.Len(); i++ {
val := (s.Index(i).Interface()).(map[string]interface{})
ts, err := extractTS(val, "created")
if err != nil {
return resp.LBs, err
}
resp.LBs[i].Created.Time = ts
ts, err = extractTS(val, "updated")
if err != nil {
return resp.LBs, err
}
resp.LBs[i].Updated.Time = ts
}
return resp.LBs, err
}
func extractTS(body map[string]interface{}, key string) (time.Time, error) {
val := body[key].(map[string]interface{})
return time.Parse(time.RFC3339, val["time"].(string))
}
type commonResult struct {
gophercloud.Result
}
// Extract interprets any commonResult as a LB, if possible.
func (r commonResult) Extract() (*LoadBalancer, error) {
if r.Err != nil {
return nil, r.Err
}
var response struct {
LB LoadBalancer `mapstructure:"loadBalancer"`
}
err := mapstructure.Decode(r.Body, &response)
json := r.Body.(map[string]interface{})
lb := json["loadBalancer"].(map[string]interface{})
ts, err := extractTS(lb, "created")
if err != nil {
return nil, err
}
response.LB.Created.Time = ts
ts, err = extractTS(lb, "updated")
if err != nil {
return nil, err
}
response.LB.Updated.Time = ts
return &response.LB, err
}
// CreateResult represents the result of a create operation.
type CreateResult struct {
commonResult
}
// DeleteResult represents the result of a delete operation.
type DeleteResult struct {
gophercloud.ErrResult
}
// UpdateResult represents the result of an update operation.
type UpdateResult struct {
gophercloud.ErrResult
}
// GetResult represents the result of a get operation.
type GetResult struct {
commonResult
}
// ProtocolPage is the page returned by a pager when traversing over a
// collection of LB protocols.
type ProtocolPage struct {
pagination.SinglePageBase
}
// IsEmpty checks whether a ProtocolPage struct is empty.
func (p ProtocolPage) IsEmpty() (bool, error) {
is, err := ExtractProtocols(p)
if err != nil {
return true, nil
}
return len(is) == 0, nil
}
// ExtractProtocols accepts a Page struct, specifically a ProtocolPage struct,
// and extracts the elements into a slice of Protocol structs. In other
// words, a generic collection is mapped into a relevant slice.
func ExtractProtocols(page pagination.Page) ([]Protocol, error) {
var resp struct {
Protocols []Protocol `mapstructure:"protocols" json:"protocols"`
}
err := mapstructure.Decode(page.(ProtocolPage).Body, &resp)
return resp.Protocols, err
}
// AlgorithmPage is the page returned by a pager when traversing over a
// collection of LB algorithms.
type AlgorithmPage struct {
pagination.SinglePageBase
}
// IsEmpty checks whether an AlgorithmPage struct is empty.
func (p AlgorithmPage) IsEmpty() (bool, error) {
is, err := ExtractAlgorithms(p)
if err != nil {
return true, nil
}
return len(is) == 0, nil
}
// ExtractAlgorithms accepts a Page struct, specifically an AlgorithmPage struct,
// and extracts the elements into a slice of Algorithm structs. In other
// words, a generic collection is mapped into a relevant slice.
func ExtractAlgorithms(page pagination.Page) ([]Algorithm, error) {
var resp struct {
Algorithms []Algorithm `mapstructure:"algorithms" json:"algorithms"`
}
err := mapstructure.Decode(page.(AlgorithmPage).Body, &resp)
return resp.Algorithms, err
}
// ErrorPage represents the HTML file that is shown to an end user who is
// attempting to access a load balancer node that is offline/unavailable.
//
// During provisioning, every load balancer is configured with a default error
// page that gets displayed when traffic is requested for an offline node.
//
// You can add a single custom error page with an HTTP-based protocol to a load
// balancer. Page updates override existing content. If a custom error page is
// deleted, or the load balancer is changed to a non-HTTP protocol, the default
// error page is restored.
type ErrorPage struct {
Content string
}
// ErrorPageResult represents the result of an error page operation -
// specifically getting or creating one.
type ErrorPageResult struct {
gophercloud.Result
}
// Extract interprets any commonResult as an ErrorPage, if possible.
func (r ErrorPageResult) Extract() (*ErrorPage, error) {
if r.Err != nil {
return nil, r.Err
}
var response struct {
ErrorPage ErrorPage `mapstructure:"errorpage"`
}
err := mapstructure.Decode(r.Body, &response)
return &response.ErrorPage, err
}
// Stats represents all the key information about a load balancer's usage.
type Stats struct {
// The number of connections closed by this load balancer because its
// ConnectTimeout interval was exceeded.
ConnectTimeout int `mapstructure:"connectTimeOut"`
// The number of transaction or protocol errors for this load balancer.
ConnectError int
// Number of connection failures for this load balancer.
ConnectFailure int
// Number of connections closed by this load balancer because its Timeout
// interval was exceeded.
DataTimedOut int
// Number of connections closed by this load balancer because the
// 'keepalive_timeout' interval was exceeded.
KeepAliveTimedOut int
// The maximum number of simultaneous TCP connections this load balancer has
// processed at any one time.
MaxConnections int `mapstructure:"maxConn"`
// Number of simultaneous connections active at the time of the request.
CurrentConnections int `mapstructure:"currentConn"`
// Number of SSL connections closed by this load balancer because the
// ConnectTimeout interval was exceeded.
SSLConnectTimeout int `mapstructure:"connectTimeOutSsl"`
// Number of SSL transaction or protocol erros in this load balancer.
SSLConnectError int `mapstructure:"connectErrorSsl"`
// Number of SSL connection failures in this load balancer.
SSLConnectFailure int `mapstructure:"connectFailureSsl"`
// Number of SSL connections closed by this load balancer because the
// Timeout interval was exceeded.
SSLDataTimedOut int `mapstructure:"dataTimedOutSsl"`
// Number of SSL connections closed by this load balancer because the
// 'keepalive_timeout' interval was exceeded.
SSLKeepAliveTimedOut int `mapstructure:"keepAliveTimedOutSsl"`
// Maximum number of simultaneous SSL connections this load balancer has
// processed at any one time.
SSLMaxConnections int `mapstructure:"maxConnSsl"`
// Number of simultaneous SSL connections active at the time of the request.
SSLCurrentConnections int `mapstructure:"currentConnSsl"`
}
// StatsResult represents the result of a Stats operation.
type StatsResult struct {
gophercloud.Result
}
// Extract interprets any commonResult as a Stats struct, if possible.
func (r StatsResult) Extract() (*Stats, error) {
if r.Err != nil {
return nil, r.Err
}
res := &Stats{}
err := mapstructure.Decode(r.Body, res)
return res, err
}