/
bucket-lifecycle-handlers.go
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/
bucket-lifecycle-handlers.go
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// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"encoding/xml"
"io"
"net/http"
"strconv"
"time"
"github.com/minio/minio/internal/bucket/lifecycle"
xhttp "github.com/minio/minio/internal/http"
"github.com/minio/minio/internal/logger"
"github.com/minio/mux"
"github.com/minio/pkg/v2/policy"
)
const (
// Lifecycle configuration file.
bucketLifecycleConfig = "lifecycle.xml"
)
// PutBucketLifecycleHandler - This HTTP handler stores given bucket lifecycle configuration as per
// https://docs.aws.amazon.com/AmazonS3/latest/dev/object-lifecycle-mgmt.html
func (api objectAPIHandlers) PutBucketLifecycleHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "PutBucketLifecycle")
defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
objAPI := api.ObjectAPI()
if objAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
// PutBucketLifecycle always needs a Content-Md5
if _, ok := r.Header[xhttp.ContentMD5]; !ok {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentMD5), r.URL)
return
}
if s3Error := checkRequestAuthType(ctx, r, policy.PutBucketLifecycleAction, bucket, ""); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
// Check if bucket exists.
if _, err := objAPI.GetBucketInfo(ctx, bucket, BucketOptions{}); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
bucketLifecycle, err := lifecycle.ParseLifecycleConfigWithID(io.LimitReader(r.Body, r.ContentLength))
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// Validate the received bucket policy document
if err = bucketLifecycle.Validate(); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// Validate the transition storage ARNs
if err = validateTransitionTier(bucketLifecycle); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// Create a map of updated set of rules in request
updatedRules := make(map[string]lifecycle.Rule, len(bucketLifecycle.Rules))
for _, rule := range bucketLifecycle.Rules {
updatedRules[rule.ID] = rule
}
// Get list of rules for the bucket from disk
meta, err := globalBucketMetadataSys.GetConfigFromDisk(ctx, bucket)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
expiryRuleRemoved := false
if len(meta.LifecycleConfigXML) > 0 {
var lcCfg lifecycle.Lifecycle
if err := xml.Unmarshal(meta.LifecycleConfigXML, &lcCfg); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
for _, rl := range lcCfg.Rules {
updRule, ok := updatedRules[rl.ID]
// original rule had expiry that is no longer in the new config,
// or rule is present but missing expiration flags
if (!rl.Expiration.IsNull() || !rl.NoncurrentVersionExpiration.IsNull()) &&
(!ok || (updRule.Expiration.IsNull() && updRule.NoncurrentVersionExpiration.IsNull())) {
expiryRuleRemoved = true
}
}
}
if bucketLifecycle.HasExpiry() || expiryRuleRemoved {
currtime := time.Now()
bucketLifecycle.ExpiryUpdatedAt = &currtime
}
configData, err := xml.Marshal(bucketLifecycle)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
if _, err = globalBucketMetadataSys.Update(ctx, bucket, bucketLifecycleConfig, configData); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// Success.
writeSuccessResponseHeadersOnly(w)
}
// GetBucketLifecycleHandler - This HTTP handler returns bucket policy configuration.
func (api objectAPIHandlers) GetBucketLifecycleHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "GetBucketLifecycle")
defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
objAPI := api.ObjectAPI()
if objAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
var withUpdatedAt bool
if updatedAtStr := r.Form.Get("withUpdatedAt"); updatedAtStr != "" {
var err error
withUpdatedAt, err = strconv.ParseBool(updatedAtStr)
if err != nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidLifecycleQueryParameter), r.URL)
return
}
}
if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketLifecycleAction, bucket, ""); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
// Check if bucket exists.
if _, err := objAPI.GetBucketInfo(ctx, bucket, BucketOptions{}); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
config, updatedAt, err := globalBucketMetadataSys.GetLifecycleConfig(bucket)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// explicitly set ExpiryUpdatedAt nil as its meant for internal consumption only
config.ExpiryUpdatedAt = nil
configData, err := xml.Marshal(config)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
if withUpdatedAt {
w.Header().Set(xhttp.MinIOLifecycleCfgUpdatedAt, updatedAt.Format(iso8601Format))
}
// Write lifecycle configuration to client.
writeSuccessResponseXML(w, configData)
}
// DeleteBucketLifecycleHandler - This HTTP handler removes bucket lifecycle configuration.
func (api objectAPIHandlers) DeleteBucketLifecycleHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "DeleteBucketLifecycle")
defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
objAPI := api.ObjectAPI()
if objAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
if s3Error := checkRequestAuthType(ctx, r, policy.PutBucketLifecycleAction, bucket, ""); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
// Check if bucket exists.
if _, err := objAPI.GetBucketInfo(ctx, bucket, BucketOptions{}); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
if _, err := globalBucketMetadataSys.Delete(ctx, bucket, bucketLifecycleConfig); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// Success.
writeSuccessNoContent(w)
}