/
oidc_role_arn_provider.go
162 lines (142 loc) · 4.71 KB
/
oidc_role_arn_provider.go
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package common
import (
"errors"
"io/ioutil"
"os"
"strconv"
"time"
tcerr "github.com/tencentcloud/tencentcloud-sdk-go-intl-en/tencentcloud/common/errors"
tchttp "github.com/tencentcloud/tencentcloud-sdk-go-intl-en/tencentcloud/common/http"
"github.com/tencentcloud/tencentcloud-sdk-go-intl-en/tencentcloud/common/json"
"github.com/tencentcloud/tencentcloud-sdk-go-intl-en/tencentcloud/common/profile"
)
type OIDCRoleArnProvider struct {
region string
providerId string
webIdentityToken string
roleArn string
roleSessionName string
durationSeconds int64
Endpoint string
beforeRefresh func(provider *OIDCRoleArnProvider) error
}
type oidcStsRsp struct {
Response struct {
Credentials struct {
Token string `json:"Token"`
TmpSecretId string `json:"TmpSecretId"`
TmpSecretKey string `json:"TmpSecretKey"`
} `json:"Credentials"`
ExpiredTime int `json:"ExpiredTime"`
Expiration time.Time `json:"Expiration"`
RequestId string `json:"RequestId"`
} `json:"Response"`
}
func NewOIDCRoleArnProvider(region, providerId, webIdentityToken, roleArn, roleSessionName string, durationSeconds int64) *OIDCRoleArnProvider {
return &OIDCRoleArnProvider{
region: region,
providerId: providerId,
webIdentityToken: webIdentityToken,
roleArn: roleArn,
roleSessionName: roleSessionName,
durationSeconds: durationSeconds,
}
}
// DefaultTkeOIDCRoleArnProvider returns a OIDCRoleArnProvider with some default options:
// 1. providerId will be environment var TKE_PROVIDER_ID
// 2. webIdentityToken will be the content of file specified by env TKE_WEB_IDENTITY_TOKEN_FILE
// 3. roleArn will be env TKE_ROLE_ARN
// 4. roleSessionName will be "tencentcloud-go-sdk-" + timestamp
// 5. durationSeconds will be 7200s
func DefaultTkeOIDCRoleArnProvider() (*OIDCRoleArnProvider, error) {
beforeRefresh := func(provider *OIDCRoleArnProvider) error {
reg := os.Getenv("TKE_REGION")
if reg == "" {
return errors.New("env TKE_REGION not exist")
}
providerId := os.Getenv("TKE_PROVIDER_ID")
if providerId == "" {
return errors.New("env TKE_PROVIDER_ID not exist")
}
tokenFile := os.Getenv("TKE_WEB_IDENTITY_TOKEN_FILE")
if tokenFile == "" {
return errors.New("env TKE_WEB_IDENTITY_TOKEN_FILE not exist")
}
tokenBytes, err := ioutil.ReadFile(tokenFile)
if err != nil {
return err
}
roleArn := os.Getenv("TKE_ROLE_ARN")
if roleArn == "" {
return errors.New("env TKE_ROLE_ARN not exist")
}
sessionName := defaultSessionName + strconv.FormatInt(time.Now().UnixNano()/1000, 10)
provider.region = region
provider.providerId = providerId
provider.webIdentityToken = string(tokenBytes)
provider.roleArn = roleArn
provider.roleSessionName = sessionName
return nil
}
provider := &OIDCRoleArnProvider{
beforeRefresh: beforeRefresh,
durationSeconds: defaultDurationSeconds,
}
return provider, provider.beforeRefresh(provider)
}
func (r *OIDCRoleArnProvider) GetCredential() (CredentialIface, error) {
const (
service = "sts"
version = "2018-08-13"
action = "AssumeRoleWithWebIdentity"
)
if r.beforeRefresh != nil {
err := r.beforeRefresh(r)
if err != nil {
return nil, err
}
}
if r.durationSeconds > 43200 || r.durationSeconds <= 0 {
return nil, tcerr.NewTencentCloudSDKError(creErr, "AssumeRoleWithWebIdentity durationSeconds should be in the range of 0~43200s", "")
}
providerEndpoint := r.Endpoint
if providerEndpoint == "" {
providerEndpoint = endpoint
}
cpf := profile.NewClientProfile()
cpf.HttpProfile.Endpoint = providerEndpoint
cpf.HttpProfile.ReqMethod = "POST"
client := NewCommonClient(nil, r.region, cpf)
request := tchttp.NewCommonRequest(service, version, action)
request.SetSkipSign(true)
params := map[string]interface{}{
"ProviderId": r.providerId,
"WebIdentityToken": r.webIdentityToken,
"RoleArn": r.roleArn,
"RoleSessionName": r.roleSessionName,
"DurationSeconds": r.durationSeconds,
}
err := request.SetActionParameters(params)
if err != nil {
return nil, err
}
response := tchttp.NewCommonResponse()
err = client.Send(request, response)
if err != nil {
return nil, err
}
rspSt := new(oidcStsRsp)
if err = json.Unmarshal(response.GetBody(), rspSt); err != nil {
return nil, tcerr.NewTencentCloudSDKError(creErr, err.Error(), "")
}
return &RoleArnCredential{
roleArn: r.roleArn,
roleSessionName: r.roleSessionName,
durationSeconds: r.durationSeconds,
expiredTime: int64(rspSt.Response.ExpiredTime) - r.durationSeconds/10,
token: rspSt.Response.Credentials.Token,
tmpSecretId: rspSt.Response.Credentials.TmpSecretId,
tmpSecretKey: rspSt.Response.Credentials.TmpSecretKey,
source: r,
}, nil
}