104 lines
2.4 KiB
Go
104 lines
2.4 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package nginx
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"regexp"
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"text/template"
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"github.com/fatih/structs"
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"github.com/golang/glog"
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)
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var (
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camelRegexp = regexp.MustCompile("[0-9A-Za-z]+")
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funcMap = template.FuncMap{
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"empty": func(input interface{}) bool {
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check, ok := input.(string)
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if ok {
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return len(check) == 0
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}
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return true
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},
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}
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)
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func (ngx *Manager) loadTemplate() {
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tmpl, _ := template.New("nginx.tmpl").Funcs(funcMap).ParseFiles("./nginx.tmpl")
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ngx.template = tmpl
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}
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func (ngx *Manager) writeCfg(cfg nginxConfiguration, ingressCfg IngressConfig) (bool, error) {
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fromMap := structs.Map(cfg)
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toMap := structs.Map(ngx.defCfg)
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curNginxCfg := merge(toMap, fromMap)
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conf := make(map[string]interface{})
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conf["upstreams"] = ingressCfg.Upstreams
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conf["servers"] = ingressCfg.Servers
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conf["tcpUpstreams"] = ingressCfg.TCPUpstreams
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conf["defResolver"] = ngx.defResolver
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conf["sslDHParam"] = ngx.sslDHParam
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conf["cfg"] = fixKeyNames(curNginxCfg)
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buffer := new(bytes.Buffer)
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err := ngx.template.Execute(buffer, conf)
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if err != nil {
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glog.Infof("NGINX error: %v", err)
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return false, err
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}
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if glog.V(3) {
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b, err := json.Marshal(conf)
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if err != nil {
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fmt.Println("error:", err)
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}
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glog.Infof("NGINX configuration: %v", string(b))
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}
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changed, err := ngx.needsReload(buffer)
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if err != nil {
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return false, err
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}
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return changed, nil
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}
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func fixKeyNames(data map[string]interface{}) map[string]interface{} {
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fixed := make(map[string]interface{})
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for k, v := range data {
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fixed[toCamelCase(k)] = v
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}
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return fixed
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}
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func toCamelCase(src string) string {
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byteSrc := []byte(src)
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chunks := camelRegexp.FindAll(byteSrc, -1)
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for idx, val := range chunks {
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if idx > 0 {
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chunks[idx] = bytes.Title(val)
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}
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}
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return string(bytes.Join(chunks, nil))
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}
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