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store.go
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store.go
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package ingress
import (
"crypto/md5"
"encoding/base64"
"encoding/hex"
"encoding/json"
"fmt"
"strings"
"github.com/rancher/norman/store/transform"
"github.com/rancher/norman/types"
"github.com/rancher/norman/types/convert"
"github.com/rancher/norman/types/values"
"github.com/sirupsen/logrus"
)
func Wrap(store types.Store) types.Store {
modify := &Store{
store,
}
return New(modify)
}
type Store struct {
types.Store
}
func (p *Store) Create(apiContext *types.APIContext, schema *types.Schema, data map[string]interface{}) (map[string]interface{}, error) {
formatData(data, false)
data, err := p.Store.Create(apiContext, schema, data)
return data, err
}
func (p *Store) Update(apiContext *types.APIContext, schema *types.Schema, data map[string]interface{}, id string) (map[string]interface{}, error) {
formatData(data, false)
data, err := p.Store.Update(apiContext, schema, data, id)
return data, err
}
func formatData(data map[string]interface{}, forFrontend bool) {
oldState := getState(data)
newState := map[string]string{}
// transform default backend
if target, ok := values.GetValue(data, "defaultBackend"); ok {
updateRule(convert.ToMapInterface(target), "/", forFrontend, data, oldState, newState)
}
// transform rules
if paths, ok := getPaths(data); ok {
for hostpath, target := range paths {
updateRule(target, hostpath, forFrontend, data, oldState, newState)
}
}
updateCerts(data, forFrontend, oldState, newState)
setState(data, newState)
}
func updateRule(target map[string]interface{}, hostpath string, forFrontend bool, data map[string]interface{}, oldState map[string]string, newState map[string]string) {
targetData := convert.ToMapInterface(target)
port, _ := targetData["targetPort"]
serviceID, _ := targetData["serviceId"].(string)
stateKey := getStateKey(hostpath, convert.ToString(port))
if forFrontend {
isService := true
if serviceValue, ok := oldState[stateKey]; ok && !convert.IsEmpty(serviceValue) {
targetData["workloadIds"] = strings.Split(serviceValue, "/")
isService = false
}
if isService {
targetData["serviceId"] = fmt.Sprintf("%s/%s", data["namespaceId"].(string), serviceID)
} else {
delete(targetData, "serviceId")
}
} else {
workloadIDs := convert.ToStringSlice(targetData["workloadIds"])
if serviceID != "" {
splitted := strings.Split(serviceID, ":")
if len(splitted) > 1 {
serviceID = splitted[1]
}
} else {
serviceID = getServiceID(stateKey)
}
newState[stateKey] = strings.Join(workloadIDs, "/")
targetData["serviceId"] = serviceID
}
}
func getServiceID(stateKey string) string {
bytes, err := base64.URLEncoding.DecodeString(stateKey)
if err != nil {
return ""
}
sum := md5.Sum(bytes)
hex := "ingress-" + hex.EncodeToString(sum[:])
return hex
}
func getStateKey(hostpath string, port string) string {
key := fmt.Sprintf("%s/%s", hostpath, port)
return base64.URLEncoding.EncodeToString([]byte(key))
}
func getCertKey(key string) string {
return base64.URLEncoding.EncodeToString([]byte(key))
}
func getPaths(data map[string]interface{}) (map[string]map[string]interface{}, bool) {
v, ok := values.GetValue(data, "rules")
if !ok {
return nil, false
}
result := make(map[string]map[string]interface{})
for _, rule := range convert.ToMapSlice(v) {
converted := convert.ToMapInterface(rule)
paths, ok := converted["paths"]
if ok {
for path, target := range convert.ToMapInterface(paths) {
result[fmt.Sprintf("%s/%s", convert.ToString(converted["host"]), path)] = convert.ToMapInterface(target)
}
}
}
return result, true
}
func setState(data map[string]interface{}, stateMap map[string]string) {
content, err := json.Marshal(stateMap)
if err != nil {
logrus.Errorf("failed to save state on ingress: %v", data["id"])
return
}
values.PutValue(data, string(content), "annotations", "ingress.cattle.io/state")
}
func getState(data map[string]interface{}) map[string]string {
state := map[string]string{}
v, ok := values.GetValue(data, "annotations", "ingress.cattle.io/state")
if ok {
json.Unmarshal([]byte(convert.ToString(v)), &state)
}
return state
}
func updateCerts(data map[string]interface{}, forFrontend bool, oldState map[string]string, newState map[string]string) {
if forFrontend {
if certs, _ := values.GetSlice(data, "tls"); len(certs) > 0 {
for _, cert := range certs {
certName := convert.ToString(cert["certificateId"])
certKey := getCertKey(certName)
cert["certificateId"] = oldState[certKey]
}
}
} else {
if certs, _ := values.GetSlice(data, "tls"); len(certs) > 0 {
for _, cert := range certs {
certificateID := convert.ToString(cert["certificateId"])
id := strings.Split(certificateID, ":")
if len(id) == 2 {
certName := id[1]
certKey := getCertKey(certName)
newState[certKey] = certificateID
cert["certificateId"] = certName
}
}
}
}
}
func New(store types.Store) types.Store {
return &transform.Store{
Store: store,
Transformer: func(apiContext *types.APIContext, data map[string]interface{}, opt *types.QueryOptions) (map[string]interface{}, error) {
formatData(data, true)
return data, nil
},
}
}