356 lines
10 KiB
Go
356 lines
10 KiB
Go
/*
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* MinIO Go Library for Amazon S3 Compatible Cloud Storage
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* Copyright 2020 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package minio
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import (
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"bytes"
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"context"
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"encoding/json"
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"encoding/xml"
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"io"
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"net/http"
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"net/url"
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"time"
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"github.com/google/uuid"
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"github.com/minio/minio-go/v7/pkg/replication"
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"github.com/minio/minio-go/v7/pkg/s3utils"
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)
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// RemoveBucketReplication removes a replication config on an existing bucket.
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func (c *Client) RemoveBucketReplication(ctx context.Context, bucketName string) error {
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return c.removeBucketReplication(ctx, bucketName)
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}
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// SetBucketReplication sets a replication config on an existing bucket.
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func (c *Client) SetBucketReplication(ctx context.Context, bucketName string, cfg replication.Config) error {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return err
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}
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// If replication is empty then delete it.
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if cfg.Empty() {
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return c.removeBucketReplication(ctx, bucketName)
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}
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// Save the updated replication.
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return c.putBucketReplication(ctx, bucketName, cfg)
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}
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// Saves a new bucket replication.
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func (c *Client) putBucketReplication(ctx context.Context, bucketName string, cfg replication.Config) error {
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// Get resources properly escaped and lined up before
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// using them in http request.
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urlValues := make(url.Values)
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urlValues.Set("replication", "")
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replication, err := xml.Marshal(cfg)
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if err != nil {
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return err
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}
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reqMetadata := requestMetadata{
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bucketName: bucketName,
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queryValues: urlValues,
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contentBody: bytes.NewReader(replication),
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contentLength: int64(len(replication)),
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contentMD5Base64: sumMD5Base64(replication),
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}
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// Execute PUT to upload a new bucket replication config.
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resp, err := c.executeMethod(ctx, http.MethodPut, reqMetadata)
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defer closeResponse(resp)
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if err != nil {
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return err
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}
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if resp.StatusCode != http.StatusOK {
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return httpRespToErrorResponse(resp, bucketName, "")
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}
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return nil
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}
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// Remove replication from a bucket.
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func (c *Client) removeBucketReplication(ctx context.Context, bucketName string) error {
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// Get resources properly escaped and lined up before
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// using them in http request.
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urlValues := make(url.Values)
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urlValues.Set("replication", "")
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// Execute DELETE on objectName.
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resp, err := c.executeMethod(ctx, http.MethodDelete, requestMetadata{
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bucketName: bucketName,
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queryValues: urlValues,
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contentSHA256Hex: emptySHA256Hex,
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})
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defer closeResponse(resp)
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if err != nil {
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return err
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}
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if resp.StatusCode != http.StatusOK {
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return httpRespToErrorResponse(resp, bucketName, "")
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}
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return nil
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}
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// GetBucketReplication fetches bucket replication configuration.If config is not
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// found, returns empty config with nil error.
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func (c *Client) GetBucketReplication(ctx context.Context, bucketName string) (cfg replication.Config, err error) {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return cfg, err
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}
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bucketReplicationCfg, err := c.getBucketReplication(ctx, bucketName)
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if err != nil {
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errResponse := ToErrorResponse(err)
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if errResponse.Code == "ReplicationConfigurationNotFoundError" {
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return cfg, nil
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}
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return cfg, err
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}
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return bucketReplicationCfg, nil
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}
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// Request server for current bucket replication config.
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func (c *Client) getBucketReplication(ctx context.Context, bucketName string) (cfg replication.Config, err error) {
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// Get resources properly escaped and lined up before
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// using them in http request.
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urlValues := make(url.Values)
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urlValues.Set("replication", "")
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// Execute GET on bucket to get replication config.
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resp, err := c.executeMethod(ctx, http.MethodGet, requestMetadata{
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bucketName: bucketName,
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queryValues: urlValues,
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})
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defer closeResponse(resp)
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if err != nil {
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return cfg, err
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}
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if resp.StatusCode != http.StatusOK {
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return cfg, httpRespToErrorResponse(resp, bucketName, "")
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}
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if err = xmlDecoder(resp.Body, &cfg); err != nil {
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return cfg, err
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}
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return cfg, nil
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}
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// GetBucketReplicationMetrics fetches bucket replication status metrics
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func (c *Client) GetBucketReplicationMetrics(ctx context.Context, bucketName string) (s replication.Metrics, err error) {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return s, err
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}
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// Get resources properly escaped and lined up before
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// using them in http request.
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urlValues := make(url.Values)
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urlValues.Set("replication-metrics", "")
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// Execute GET on bucket to get replication config.
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resp, err := c.executeMethod(ctx, http.MethodGet, requestMetadata{
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bucketName: bucketName,
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queryValues: urlValues,
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})
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defer closeResponse(resp)
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if err != nil {
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return s, err
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}
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if resp.StatusCode != http.StatusOK {
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return s, httpRespToErrorResponse(resp, bucketName, "")
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}
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respBytes, err := io.ReadAll(resp.Body)
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if err != nil {
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return s, err
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}
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if err := json.Unmarshal(respBytes, &s); err != nil {
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return s, err
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}
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return s, nil
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}
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// mustGetUUID - get a random UUID.
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func mustGetUUID() string {
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u, err := uuid.NewRandom()
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if err != nil {
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return ""
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}
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return u.String()
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}
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// ResetBucketReplication kicks off replication of previously replicated objects if ExistingObjectReplication
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// is enabled in the replication config
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func (c *Client) ResetBucketReplication(ctx context.Context, bucketName string, olderThan time.Duration) (rID string, err error) {
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rID = mustGetUUID()
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_, err = c.resetBucketReplicationOnTarget(ctx, bucketName, olderThan, "", rID)
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if err != nil {
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return rID, err
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}
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return rID, nil
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}
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// ResetBucketReplicationOnTarget kicks off replication of previously replicated objects if
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// ExistingObjectReplication is enabled in the replication config
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func (c *Client) ResetBucketReplicationOnTarget(ctx context.Context, bucketName string, olderThan time.Duration, tgtArn string) (replication.ResyncTargetsInfo, error) {
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return c.resetBucketReplicationOnTarget(ctx, bucketName, olderThan, tgtArn, mustGetUUID())
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}
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// ResetBucketReplication kicks off replication of previously replicated objects if ExistingObjectReplication
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// is enabled in the replication config
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func (c *Client) resetBucketReplicationOnTarget(ctx context.Context, bucketName string, olderThan time.Duration, tgtArn, resetID string) (rinfo replication.ResyncTargetsInfo, err error) {
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// Input validation.
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if err = s3utils.CheckValidBucketName(bucketName); err != nil {
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return
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}
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// Get resources properly escaped and lined up before
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// using them in http request.
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urlValues := make(url.Values)
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urlValues.Set("replication-reset", "")
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if olderThan > 0 {
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urlValues.Set("older-than", olderThan.String())
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}
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if tgtArn != "" {
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urlValues.Set("arn", tgtArn)
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}
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urlValues.Set("reset-id", resetID)
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// Execute GET on bucket to get replication config.
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resp, err := c.executeMethod(ctx, http.MethodPut, requestMetadata{
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bucketName: bucketName,
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queryValues: urlValues,
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})
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defer closeResponse(resp)
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if err != nil {
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return rinfo, err
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}
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if resp.StatusCode != http.StatusOK {
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return rinfo, httpRespToErrorResponse(resp, bucketName, "")
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}
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if err = json.NewDecoder(resp.Body).Decode(&rinfo); err != nil {
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return rinfo, err
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}
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return rinfo, nil
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}
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// GetBucketReplicationResyncStatus gets the status of replication resync
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func (c *Client) GetBucketReplicationResyncStatus(ctx context.Context, bucketName, arn string) (rinfo replication.ResyncTargetsInfo, err error) {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return rinfo, err
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}
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// Get resources properly escaped and lined up before
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// using them in http request.
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urlValues := make(url.Values)
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urlValues.Set("replication-reset-status", "")
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if arn != "" {
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urlValues.Set("arn", arn)
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}
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// Execute GET on bucket to get replication config.
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resp, err := c.executeMethod(ctx, http.MethodGet, requestMetadata{
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bucketName: bucketName,
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queryValues: urlValues,
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})
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defer closeResponse(resp)
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if err != nil {
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return rinfo, err
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}
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if resp.StatusCode != http.StatusOK {
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return rinfo, httpRespToErrorResponse(resp, bucketName, "")
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}
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if err = json.NewDecoder(resp.Body).Decode(&rinfo); err != nil {
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return rinfo, err
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}
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return rinfo, nil
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}
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// GetBucketReplicationMetricsV2 fetches bucket replication status metrics
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func (c *Client) GetBucketReplicationMetricsV2(ctx context.Context, bucketName string) (s replication.MetricsV2, err error) {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return s, err
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}
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// Get resources properly escaped and lined up before
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// using them in http request.
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urlValues := make(url.Values)
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urlValues.Set("replication-metrics", "2")
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// Execute GET on bucket to get replication metrics.
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resp, err := c.executeMethod(ctx, http.MethodGet, requestMetadata{
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bucketName: bucketName,
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queryValues: urlValues,
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})
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defer closeResponse(resp)
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if err != nil {
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return s, err
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}
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if resp.StatusCode != http.StatusOK {
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return s, httpRespToErrorResponse(resp, bucketName, "")
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}
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respBytes, err := io.ReadAll(resp.Body)
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if err != nil {
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return s, err
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}
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if err := json.Unmarshal(respBytes, &s); err != nil {
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return s, err
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}
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return s, nil
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}
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// CheckBucketReplication validates if replication is set up properly for a bucket
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func (c *Client) CheckBucketReplication(ctx context.Context, bucketName string) (err error) {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return err
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}
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// Get resources properly escaped and lined up before
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// using them in http request.
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urlValues := make(url.Values)
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urlValues.Set("replication-check", "")
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// Execute GET on bucket to get replication config.
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resp, err := c.executeMethod(ctx, http.MethodGet, requestMetadata{
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bucketName: bucketName,
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queryValues: urlValues,
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})
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defer closeResponse(resp)
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if err != nil {
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return err
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}
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if resp.StatusCode != http.StatusOK {
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return httpRespToErrorResponse(resp, bucketName, "")
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}
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return nil
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}
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