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profile_provider.go
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/
profile_provider.go
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// Copyright 2022 Huawei Technologies Co.,Ltd.
//
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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 provider
import (
"fmt"
"github.com/dysodeng/huaweicloud-sdk-go-v3/core/auth"
"github.com/dysodeng/huaweicloud-sdk-go-v3/core/auth/basic"
"github.com/dysodeng/huaweicloud-sdk-go-v3/core/auth/global"
"github.com/dysodeng/huaweicloud-sdk-go-v3/core/sdkerr"
"gopkg.in/ini.v1"
"os"
"path/filepath"
"strings"
)
const (
credentialsFileEnvName = "HUAWEICLOUD_SDK_CREDENTIALS_FILE"
defaultDir = ".huaweicloud"
defaultFile = "credentials"
akName = "ak"
skName = "sk"
projectIdName = "project_id"
domainIdName = "domain_id"
securityTokenName = "security_token"
iamEndpointName = "iam_endpoint"
idpIdName = "idp_id"
idTokenFileName = "id_token_file"
)
type ProfileCredentialProvider struct {
credentialType string
}
// NewProfileCredentialProvider return a profile credential provider
// Supported credential types: basic, global
func NewProfileCredentialProvider(credentialType string) *ProfileCredentialProvider {
return &ProfileCredentialProvider{credentialType: strings.ToLower(credentialType)}
}
// BasicCredentialProfileProvider return a profile provider for basic.Credentials
func BasicCredentialProfileProvider() *ProfileCredentialProvider {
return NewProfileCredentialProvider(basicCredentialType)
}
// GlobalCredentialProfileProvider return a profile provider for global.Credentials
func GlobalCredentialProfileProvider() *ProfileCredentialProvider {
return NewProfileCredentialProvider(globalCredentialType)
}
// GetCredentials get basic.Credentials or global.Credentials from profile
func (p *ProfileCredentialProvider) GetCredentials() (auth.ICredential, error) {
filePath, err := getCredentialsFilePath()
if err != nil {
return nil, err
}
file, err := ini.Load(filePath)
if err != nil {
return nil, err
}
section := file.Section(p.credentialType)
if section == nil {
return nil, sdkerr.NewCredentialsTypeError(fmt.Sprintf("credential type '%s' does not exist in '%s'", p.credentialType, filePath))
}
if strings.HasPrefix(p.credentialType, basicCredentialType) {
builder := basic.NewCredentialsBuilder().WithProjectId(section.Key(projectIdName).String())
err := fillCommonAttrs(builder, getCommonAttrsFromProfile(section))
if err != nil {
return nil, err
}
return builder.Build(), nil
} else if strings.HasPrefix(p.credentialType, globalCredentialType) {
builder := global.NewCredentialsBuilder().WithDomainId(section.Key(domainIdName).String())
err := fillCommonAttrs(builder, getCommonAttrsFromProfile(section))
if err != nil {
return nil, err
}
return builder.Build(), nil
}
return nil, sdkerr.NewCredentialsTypeError("unsupported credential type: " + p.credentialType)
}
func getCredentialsFilePath() (string, error) {
if path := os.Getenv(credentialsFileEnvName); path != "" {
return path, nil
}
dir, err := os.UserHomeDir()
if err != nil {
return "", err
}
return filepath.Join(dir, defaultDir, defaultFile), nil
}
func getCommonAttrsFromProfile(section *ini.Section) commonAttrs {
return commonAttrs{
ak: section.Key(akName).String(),
sk: section.Key(skName).String(),
securityToken: section.Key(securityTokenName).String(),
idpId: section.Key(idpIdName).String(),
idTokenFile: section.Key(idTokenFileName).String(),
iamEndpoint: section.Key(iamEndpointName).String(),
}
}