1/*
2 * MinIO Go Library for Amazon S3 Compatible Cloud Storage
3 * Copyright 2015-2017 MinIO, Inc.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18package minio
19
20import (
21	"context"
22	"io/ioutil"
23	"net/http"
24	"net/url"
25
26	"github.com/minio/minio-go/v6/pkg/s3utils"
27)
28
29// GetBucketLifecycle - get bucket lifecycle.
30func (c Client) GetBucketLifecycle(bucketName string) (string, error) {
31	// Input validation.
32	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
33		return "", err
34	}
35	bucketLifecycle, err := c.getBucketLifecycle(bucketName)
36	if err != nil {
37		errResponse := ToErrorResponse(err)
38		if errResponse.Code == "NoSuchLifecycleConfiguration" {
39			return "", nil
40		}
41		return "", err
42	}
43	return bucketLifecycle, nil
44}
45
46// Request server for current bucket lifecycle.
47func (c Client) getBucketLifecycle(bucketName string) (string, error) {
48	// Get resources properly escaped and lined up before
49	// using them in http request.
50	urlValues := make(url.Values)
51	urlValues.Set("lifecycle", "")
52
53	// Execute GET on bucket to get lifecycle.
54	resp, err := c.executeMethod(context.Background(), "GET", requestMetadata{
55		bucketName:  bucketName,
56		queryValues: urlValues,
57	})
58
59	defer closeResponse(resp)
60	if err != nil {
61		return "", err
62	}
63
64	if resp != nil {
65		if resp.StatusCode != http.StatusOK {
66			return "", httpRespToErrorResponse(resp, bucketName, "")
67		}
68	}
69
70	bucketLifecycleBuf, err := ioutil.ReadAll(resp.Body)
71	if err != nil {
72		return "", err
73	}
74
75	lifecycle := string(bucketLifecycleBuf)
76	return lifecycle, err
77}
78