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authn.go
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authn.go
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//
// Copyright The Athenz 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 sia
import (
"github.com/AthenZ/athenz/libs/go/sia/host/provider"
"github.com/AthenZ/athenz/libs/go/sia/options"
"log"
)
func GetGCEConfig(configFile, profileConfigFile, metaEndpoint, region string, provider provider.Provider) (*options.Config, *options.AccessProfileConfig, error) {
var profileConfig *options.AccessProfileConfig
config, _, err := options.InitFileConfig(configFile, metaEndpoint, false, region, "", provider)
if err != nil {
log.Printf("Unable to process configuration file '%s': %v\n", configFile, err)
log.Println("Trying to determine service details from the environment variables...")
config, _, err = options.InitEnvConfig(config, provider)
if err != nil {
log.Printf("Unable to process environment settings: %v\n", err)
// if we do not have settings in our environment, we're going
// to use fallback to retrieve values from the context ( metadata etc )
config, profileConfig, err = options.InitGenericProfileConfig(metaEndpoint, "", "", provider)
if err != nil {
log.Printf("Unable to determine project, domain, service etc. from context err=%v\n", err)
return nil, nil, err
}
}
}
if profileConfig == nil {
profileConfig, err := GetGCEAccessProfile(profileConfigFile, metaEndpoint, provider)
if err != nil {
log.Printf("Unable to determine user access management profile information: %v\n", err)
}
return config, profileConfig, nil
}
return config, profileConfig, nil
}
func GetGCEAccessProfile(configFile, metaEndpoint string, provider provider.Provider) (*options.AccessProfileConfig, error) {
accessProfileConfig, err := options.InitAccessProfileFileConfig(configFile)
if err != nil {
log.Printf("Unable to process user access management configuration file '%s': %v\n", configFile, err)
log.Println("Trying to determine user access management profile details from the environment variables...")
accessProfileConfig, err = options.InitAccessProfileEnvConfig()
if err != nil {
log.Printf("Unable to process environment settings: %v\n", err)
// if we do not have settings in our environment, we're going
// to use fallback to retrieving access profile from meta
log.Println("Trying to determine user access management profile details from GCP context")
_, accessProfileConfig, err = options.InitGenericProfileConfig(metaEndpoint, "", "", provider)
if err != nil {
return nil, err
}
}
}
return accessProfileConfig, err
}