/
credential_parser.go
147 lines (125 loc) · 4.71 KB
/
credential_parser.go
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/**
* Copyright (c) 2016 Intel Corporation
*
* 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 main
import (
"errors"
"regexp"
"strconv"
"strings"
"k8s.io/kubernetes/pkg/api"
"github.com/trustedanalytics/kubernetes-broker/catalog"
"github.com/trustedanalytics/kubernetes-broker/k8s"
)
func ParseCredentialMappingAdvanced(serviceMetaName string, svcCreds []k8s.ServiceCredential, pods []k8s.PodEnvs,
blueprint catalog.KubernetesBlueprint) (string, error) {
var err error = nil
var parsedMapping string
if blueprint.ReplicaTemplate != "" {
parsedMapping, err = parseSvcCredsForClusteredPlan(blueprint, svcCreds)
if err != nil {
return "", err
}
} else {
parsedMapping, err = parseSvcCredsForSimplePlan(blueprint.CredentialsMapping, svcCreds)
if err != nil {
return "", err
}
}
parsedMapping = strings.Replace(parsedMapping, "$name", serviceMetaName, -1)
//TODO why we put this?
parsedMapping = strings.Replace(parsedMapping, "$uri", "NOTSUPPORTED://yet", -1)
parsedMapping = parseEnvs(parsedMapping, pods)
return parsedMapping, nil
}
func parseSvcCredsForClusteredPlan(blueprint catalog.KubernetesBlueprint, svcCreds []k8s.ServiceCredential) (string, error) {
var err error = nil
parsedReplicas := []string{}
for _, svc := range svcCreds {
templateToParse := blueprint.ReplicaTemplate
templateToParse = strings.Replace(templateToParse, "$hostname", svc.Host, -1)
templateToParse = strings.Replace(templateToParse, "$nodeName", svc.Name, -1)
templateToParse, err = parsePorts(templateToParse, svc.Ports)
if err != nil {
return "", err
}
parsedReplicas = append(parsedReplicas, templateToParse)
}
parsedMapping := blueprint.CredentialsMapping
parsedMapping = strings.Replace(parsedMapping, "$nodes", strings.Join(parsedReplicas, ","), -1)
return parsedMapping, nil
}
func parseSvcCredsForSimplePlan(templateToParse string, svcCreds []k8s.ServiceCredential) (string, error) {
var err error = nil
//TODO we should refactor all our credentialmapping.json in simple plans because they don't support more then 1 service
for _, svc := range svcCreds {
templateToParse = strings.Replace(templateToParse, "$hostname", svc.Host, -1)
templateToParse, err = parsePorts(templateToParse, svc.Ports)
if err != nil {
return "", err
}
//TODO since we don't support more then one service there is no point to continue this
break
}
return templateToParse, nil
}
func parseEnvs(templateToParse string, pods []k8s.PodEnvs) string {
var re_env = regexp.MustCompile(`\$env_[A-Za-z\-_]+`)
parsed_env_list := re_env.FindAllString(templateToParse, -1)
logger.Debug("$env_ variables: ", parsed_env_list)
allEnv := map[string]string{}
for _, pod := range pods {
for _, container := range pod.Containers {
allEnv = appendMaps(allEnv, container.Envs)
}
}
for _, parsed_env := range parsed_env_list {
parsed_env = strings.Replace(parsed_env, "$env_", "", -1)
templateToParse = strings.Replace(templateToParse, "$env_"+parsed_env, allEnv[parsed_env], -1)
}
return templateToParse
}
func parsePorts(templateToParse string, ports []api.ServicePort) (string, error) {
var re = regexp.MustCompile(`\$port_[0-9]+`)
parsed_ports_list := re.FindAllString(templateToParse, -1)
logger.Debug("$port_ variables: ", parsed_ports_list)
for _, parsed_port := range parsed_ports_list {
expected_port_num_strs := strings.Split(parsed_port, "_")
if len(expected_port_num_strs) != 2 {
return "", errors.New("Template error: Port mapping incorrect on " + parsed_port)
}
expected_port_num_int, err := strconv.Atoi(expected_port_num_strs[1])
if err != nil {
return "", errors.New("Parsing error: Port value has incorrect fromat " + expected_port_num_strs[1])
}
for _, p := range ports {
target_port_int, err := strconv.Atoi(p.TargetPort.String())
if err != nil {
return "", errors.New("Parsing error: TargetPort value has incorrect fromat " + p.TargetPort.String())
}
if target_port_int == expected_port_num_int {
templateToParse = strings.Replace(templateToParse, parsed_port, strconv.Itoa(p.NodePort), -1)
continue
}
}
}
return templateToParse, nil
}
func appendMaps(source, newMap map[string]string) map[string]string {
for k, v := range newMap {
source[k] = v
}
return source
}