122 lines
3.1 KiB
Go
122 lines
3.1 KiB
Go
/*
|
|
Copyright 2015 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package template
|
|
|
|
import (
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/golang/glog"
|
|
"github.com/imdario/mergo"
|
|
|
|
"github.com/fatih/structs"
|
|
"github.com/mitchellh/mapstructure"
|
|
go_camelcase "github.com/segmentio/go-camelcase"
|
|
|
|
"k8s.io/ingress/controllers/nginx/pkg/config"
|
|
"k8s.io/ingress/core/pkg/ingress/defaults"
|
|
|
|
"k8s.io/kubernetes/pkg/api"
|
|
)
|
|
|
|
const (
|
|
customHTTPErrors = "custom-http-errors"
|
|
skipAccessLogUrls = "skip-access-log-urls"
|
|
whitelistSourceRange = "whitelist-source-range"
|
|
)
|
|
|
|
// StandarizeKeyNames ...
|
|
func StandarizeKeyNames(data interface{}) map[string]interface{} {
|
|
return fixKeyNames(structs.Map(data))
|
|
}
|
|
|
|
// ReadConfig obtains the configuration defined by the user merged with the defaults.
|
|
func ReadConfig(conf *api.ConfigMap) config.Configuration {
|
|
if len(conf.Data) == 0 {
|
|
return config.NewDefault()
|
|
}
|
|
|
|
var errors []int
|
|
var skipUrls []string
|
|
var whitelist []string
|
|
|
|
if val, ok := conf.Data[customHTTPErrors]; ok {
|
|
delete(conf.Data, customHTTPErrors)
|
|
for _, i := range strings.Split(val, ",") {
|
|
j, err := strconv.Atoi(i)
|
|
if err != nil {
|
|
glog.Warningf("%v is not a valid http code: %v", i, err)
|
|
} else {
|
|
errors = append(errors, j)
|
|
}
|
|
}
|
|
}
|
|
if val, ok := conf.Data[skipAccessLogUrls]; ok {
|
|
delete(conf.Data, skipAccessLogUrls)
|
|
skipUrls = strings.Split(val, ",")
|
|
}
|
|
if val, ok := conf.Data[whitelistSourceRange]; ok {
|
|
delete(conf.Data, whitelistSourceRange)
|
|
whitelist = append(whitelist, strings.Split(val, ",")...)
|
|
}
|
|
|
|
to := config.Configuration{}
|
|
to.Backend = defaults.Backend{
|
|
CustomHTTPErrors: filterErrors(errors),
|
|
SkipAccessLogURLs: skipUrls,
|
|
WhitelistSourceRange: whitelist,
|
|
}
|
|
def := config.NewDefault()
|
|
if err := mergo.Merge(&to, def); err != nil {
|
|
glog.Warningf("unexpected error merging defaults: %v", err)
|
|
}
|
|
|
|
metadata := &mapstructure.Metadata{}
|
|
decoder, err := mapstructure.NewDecoder(&mapstructure.DecoderConfig{
|
|
TagName: "structs",
|
|
Result: &to,
|
|
WeaklyTypedInput: true,
|
|
Metadata: metadata,
|
|
})
|
|
|
|
err = decoder.Decode(conf.Data)
|
|
if err != nil {
|
|
glog.Infof("%v", err)
|
|
}
|
|
return to
|
|
}
|
|
|
|
func filterErrors(codes []int) []int {
|
|
var fa []int
|
|
for _, code := range codes {
|
|
if code > 299 && code < 600 {
|
|
fa = append(fa, code)
|
|
} else {
|
|
glog.Warningf("error code %v is not valid for custom error pages", code)
|
|
}
|
|
}
|
|
|
|
return fa
|
|
}
|
|
|
|
func fixKeyNames(data map[string]interface{}) map[string]interface{} {
|
|
fixed := make(map[string]interface{})
|
|
for k, v := range data {
|
|
fixed[go_camelcase.Camelcase(k)] = v
|
|
}
|
|
return fixed
|
|
}
|