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/*
* MinIO Go Library for Amazon S3 Compatible Cloud Storage
* Copyright 2020 MinIO, Inc.
*
* 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 minio
import (
"bytes"
"context"
"encoding/xml"
"io"
"net/http"
"net/url"
"time"
"github.com/minio/minio-go/v7/pkg/lifecycle"
"github.com/minio/minio-go/v7/pkg/s3utils"
)
// SetBucketLifecycle set the lifecycle on an existing bucket.
func (c *Client) SetBucketLifecycle(ctx context.Context, bucketName string, config *lifecycle.Configuration) error {
// Input validation.
if err := s3utils.CheckValidBucketName(bucketName); err != nil {
return err
}
// If lifecycle is empty then delete it.
if config.Empty() {
return c.removeBucketLifecycle(ctx, bucketName)
}
buf, err := xml.Marshal(config)
if err != nil {
return err
}
// Save the updated lifecycle.
return c.putBucketLifecycle(ctx, bucketName, buf)
}
// Saves a new bucket lifecycle.
func (c *Client) putBucketLifecycle(ctx context.Context, bucketName string, buf []byte) error {
// Get resources properly escaped and lined up before
// using them in http request.
urlValues := make(url.Values)
urlValues.Set("lifecycle", "")
// Content-length is mandatory for put lifecycle request
reqMetadata := requestMetadata{
bucketName: bucketName,
queryValues: urlValues,
contentBody: bytes.NewReader(buf),
contentLength: int64(len(buf)),
contentMD5Base64: sumMD5Base64(buf),
}
// Execute PUT to upload a new bucket lifecycle.
resp, err := c.executeMethod(ctx, http.MethodPut, reqMetadata)
defer closeResponse(resp)
if err != nil {
return err
}
if resp != nil {
if resp.StatusCode != http.StatusOK {
return httpRespToErrorResponse(resp, bucketName, "")
}
}
return nil
}
// Remove lifecycle from a bucket.
func (c *Client) removeBucketLifecycle(ctx context.Context, bucketName string) error {
// Get resources properly escaped and lined up before
// using them in http request.
urlValues := make(url.Values)
urlValues.Set("lifecycle", "")
// Execute DELETE on objectName.
resp, err := c.executeMethod(ctx, http.MethodDelete, requestMetadata{
bucketName: bucketName,
queryValues: urlValues,
contentSHA256Hex: emptySHA256Hex,
})
defer closeResponse(resp)
if err != nil {
return err
}
return nil
}
// GetBucketLifecycle fetch bucket lifecycle configuration
func (c *Client) GetBucketLifecycle(ctx context.Context, bucketName string) (*lifecycle.Configuration, error) {
lc, _, err := c.GetBucketLifecycleWithInfo(ctx, bucketName)
return lc, err
}
// GetBucketLifecycleWithInfo fetch bucket lifecycle configuration along with when it was last updated
func (c *Client) GetBucketLifecycleWithInfo(ctx context.Context, bucketName string) (*lifecycle.Configuration, time.Time, error) {
// Input validation.
if err := s3utils.CheckValidBucketName(bucketName); err != nil {
return nil, time.Time{}, err
}
bucketLifecycle, updatedAt, err := c.getBucketLifecycle(ctx, bucketName)
if err != nil {
return nil, time.Time{}, err
}
config := lifecycle.NewConfiguration()
if err = xml.Unmarshal(bucketLifecycle, config); err != nil {
return nil, time.Time{}, err
}
return config, updatedAt, nil
}
// Request server for current bucket lifecycle.
func (c *Client) getBucketLifecycle(ctx context.Context, bucketName string) ([]byte, time.Time, error) {
// Get resources properly escaped and lined up before
// using them in http request.
urlValues := make(url.Values)
urlValues.Set("lifecycle", "")
urlValues.Set("withUpdatedAt", "true")
// Execute GET on bucket to get lifecycle.
resp, err := c.executeMethod(ctx, http.MethodGet, requestMetadata{
bucketName: bucketName,
queryValues: urlValues,
})
defer closeResponse(resp)
if err != nil {
return nil, time.Time{}, err
}
if resp != nil {
if resp.StatusCode != http.StatusOK {
return nil, time.Time{}, httpRespToErrorResponse(resp, bucketName, "")
}
}
lcBytes, err := io.ReadAll(resp.Body)
if err != nil {
return nil, time.Time{}, err
}
const minIOLifecycleCfgUpdatedAt = "X-Minio-LifecycleConfig-UpdatedAt"
var updatedAt time.Time
if timeStr := resp.Header.Get(minIOLifecycleCfgUpdatedAt); timeStr != "" {
updatedAt, err = time.Parse(iso8601DateFormat, timeStr)
if err != nil {
return nil, time.Time{}, err
}
}
return lcBytes, updatedAt, nil
}
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