101 lines
3.1 KiB
Go
101 lines
3.1 KiB
Go
/*
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Copyright 2017 The go-marathon 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 marathon
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import (
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"encoding/json"
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"fmt"
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)
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// PodAlias aliases the Pod struct so that it will be marshaled/unmarshaled automatically
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type PodAlias Pod
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// UnmarshalJSON unmarshals the given Pod JSON as expected except for environment variables and secrets.
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// Environment variables are stored in the Env field. Secrets, including the environment variable part,
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// are stored in the Secrets field.
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func (p *Pod) UnmarshalJSON(b []byte) error {
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aux := &struct {
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*PodAlias
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Env map[string]interface{} `json:"environment"`
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Secrets map[string]TmpSecret `json:"secrets"`
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}{
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PodAlias: (*PodAlias)(p),
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}
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if err := json.Unmarshal(b, aux); err != nil {
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return fmt.Errorf("malformed pod definition %v", err)
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}
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env := map[string]string{}
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secrets := map[string]Secret{}
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for envName, genericEnvValue := range aux.Env {
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switch envValOrSecret := genericEnvValue.(type) {
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case string:
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env[envName] = envValOrSecret
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case map[string]interface{}:
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for secret, secretStore := range envValOrSecret {
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if secStore, ok := secretStore.(string); ok && secret == "secret" {
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secrets[secStore] = Secret{EnvVar: envName}
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break
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}
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return fmt.Errorf("unexpected secret field %v of value type %T", secret, envValOrSecret[secret])
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}
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default:
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return fmt.Errorf("unexpected environment variable type %T", envValOrSecret)
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}
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}
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p.Env = env
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for k, v := range aux.Secrets {
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tmp := secrets[k]
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tmp.Source = v.Source
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secrets[k] = tmp
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}
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p.Secrets = secrets
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return nil
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}
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// MarshalJSON marshals the given Pod as expected except for environment variables and secrets,
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// which are marshaled from specialized structs. The environment variable piece of the secrets and other
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// normal environment variables are combined and marshaled to the env field. The secrets and the related
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// source are marshaled into the secrets field.
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func (p *Pod) MarshalJSON() ([]byte, error) {
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env := make(map[string]interface{})
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secrets := make(map[string]TmpSecret)
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if p.Env != nil {
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for k, v := range p.Env {
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env[string(k)] = string(v)
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}
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}
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if p.Secrets != nil {
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for k, v := range p.Secrets {
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// Only add it to the root level pod environment if it's used
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// Otherwise it's likely in one of the container environments
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if v.EnvVar != "" {
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env[v.EnvVar] = TmpEnvSecret{Secret: k}
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}
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secrets[k] = TmpSecret{v.Source}
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}
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}
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aux := &struct {
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*PodAlias
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Env map[string]interface{} `json:"environment,omitempty"`
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Secrets map[string]TmpSecret `json:"secrets,omitempty"`
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}{PodAlias: (*PodAlias)(p), Env: env, Secrets: secrets}
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return json.Marshal(aux)
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}
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