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/**
* Copyright (c) 2018 ZTE Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and the Apache License 2.0 which both accompany this distribution,
* and are available at http://www.eclipse.org/legal/epl-v10.html
* and http://www.apache.org/licenses/LICENSE-2.0
*
* Contributors:
* ZTE - initial Project
*/
package pilot
import (
"errors"
"msb2pilot/log"
"msb2pilot/models"
"msb2pilot/util"
"os"
"path/filepath"
"istio.io/istio/pilot/pkg/config/kube/crd"
"istio.io/istio/pilot/pkg/model"
)
type Operation string
var (
client *crd.Client
configPath = filepath.Join(util.GetCfgPath(), "k8s.yml")
)
const (
OperationCreate Operation = "create"
OperationUpdate Operation = "update"
OperationDelete Operation = "delete"
)
/**
* if the input param is a json file, then the json configs should be independent objects not a array. For example:
[{}, {}] is error. {} {} is right
*/
func ParseParam(input string) ([]model.Config, error) {
configs, _, err := crd.ParseInputs(input)
return configs, err
}
func Save(operation Operation, configs []model.Config) []*model.Config {
failConfigs := make([]*model.Config, 0, len(configs))
for _, rule := range configs {
rule.Namespace = "default"
var rev string
var err error
if rev, err = operate(operation, &rule); err != nil {
failConfigs = append(failConfigs, &rule)
log.Log.Error("failed to "+string(operation)+"routerule", err)
}
log.Log.Informational("%s config %v at revision %v \n", operation, rule.Key(), rev)
}
return failConfigs
}
func init() {
updateK8sAddress(configPath)
var err error
client, err = crd.NewClient(configPath, model.ConfigDescriptor{
model.RouteRule,
model.DestinationPolicy,
model.DestinationRule,
}, "")
if err != nil {
log.Log.Error("fail to init crd", err)
}
}
func updateK8sAddress(path string) (string, error) {
addr := os.Getenv(models.EnvK8sAddress)
log.Log.Informational("k8s cfg address from env: ", addr)
if addr == "" {
return "", nil
}
// load cfg file
cfgstr, err := util.Read(path)
if err != nil {
log.Log.Error("file to load k8s config file", err)
return "", err
}
// update address
cfg := make(map[string]interface{})
util.UnmarshalYaml(cfgstr, &cfg)
if clusters, exist := cfg["clusters"]; exist {
clusterItem := clusters.([]interface{})[0]
cluster, _ := clusterItem.(map[interface{}]interface{})["cluster"]
cluster.(map[interface{}]interface{})["server"] = addr
}
updatedCfgstr, _ := util.MarshalYaml(cfg)
err = util.Write(path, updatedCfgstr, 0644)
if err != nil {
log.Log.Error("fail to write k8s cfg info to file", err)
}
return addr, err
}
func Get(typ, namespace, name string) (*model.Config, bool) {
proto, err := protoSchema(typ)
if err != nil {
log.Log.Informational("get resource error", err)
return &model.Config{}, false
}
return client.Get(proto.Type, name, namespace)
}
func protoSchema(typ string) (model.ProtoSchema, error) {
for _, desc := range client.ConfigDescriptor() {
switch typ {
case crd.ResourceName(desc.Type), crd.ResourceName(desc.Plural):
return desc, nil
}
}
return model.ProtoSchema{}, errors.New("can not find this kind of resources:[" + typ + "]")
}
func List(typ, namespace string) ([]model.Config, error) {
proto, err := protoSchema(typ)
if err != nil {
return nil, err
}
return client.List(proto.Type, namespace)
}
func Create(config *model.Config) (string, error) {
return client.Create(*config)
}
func Delete(typ, namespace, name string) error {
proto, err := protoSchema(typ)
if err != nil {
return err
}
return client.Delete(proto.Type, name, namespace)
}
func Update(config *model.Config) (string, error) {
if config.ResourceVersion == "" {
current, exists := client.Get(config.Type, config.Name, config.Namespace)
if exists {
config.ResourceVersion = current.ResourceVersion
}
}
return client.Update(*config)
}
func operate(operation Operation, config *model.Config) (string, error) {
switch operation {
case OperationCreate:
return client.Create(*config)
case OperationDelete:
return "", client.Delete(config.Type, config.Name, config.Namespace)
case OperationUpdate:
return Update(config)
default:
return "", errors.New("operation[" + string(operation) + "] not supported")
}
}
func ConvertConfig(config model.Config) crd.IstioObject {
schema, exists := client.ConfigDescriptor().GetByType(config.Type)
if !exists {
log.Log.Error("Unkown kind for ", config.Name)
return nil
}
obj, err := crd.ConvertConfig(schema, config)
if err != nil {
log.Log.Error("could not decode ", config.Name, err)
return nil
}
return obj
}
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