1 files changed, 261 insertions, 0 deletions

diff --git a/vendor/github.com/minio/minio-go/v7/api-bucket-notification.go b/vendor/github.com/minio/minio-go/v7/api-bucket-notification.go
new file mode 100644
index 0000000..8de5c01
--- /dev/null
+++ b/vendor/github.com/minio/minio-go/v7/api-bucket-notification.go
@@ -0,0 +1,261 @@
+/*
+ * MinIO Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017-2020 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 (
+        "bufio"
+        "bytes"
+        "context"
+        "encoding/xml"
+        "net/http"
+        "net/url"
+        "time"
+
+        jsoniter "github.com/json-iterator/go"
+        "github.com/minio/minio-go/v7/pkg/notification"
+        "github.com/minio/minio-go/v7/pkg/s3utils"
+)
+
+// SetBucketNotification saves a new bucket notification with a context to control cancellations and timeouts.
+func (c *Client) SetBucketNotification(ctx context.Context, bucketName string, config notification.Configuration) error {
+        // Input validation.
+        if err := s3utils.CheckValidBucketName(bucketName); err != nil {
+                return err
+        }
+
+        // Get resources properly escaped and lined up before
+        // using them in http request.
+        urlValues := make(url.Values)
+        urlValues.Set("notification", "")
+
+        notifBytes, err := xml.Marshal(&config)
+        if err != nil {
+                return err
+        }
+
+        notifBuffer := bytes.NewReader(notifBytes)
+        reqMetadata := requestMetadata{
+                bucketName:       bucketName,
+                queryValues:      urlValues,
+                contentBody:      notifBuffer,
+                contentLength:    int64(len(notifBytes)),
+                contentMD5Base64: sumMD5Base64(notifBytes),
+                contentSHA256Hex: sum256Hex(notifBytes),
+        }
+
+        // Execute PUT to upload a new bucket notification.
+        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
+}
+
+// RemoveAllBucketNotification - Remove bucket notification clears all previously specified config
+func (c *Client) RemoveAllBucketNotification(ctx context.Context, bucketName string) error {
+        return c.SetBucketNotification(ctx, bucketName, notification.Configuration{})
+}
+
+// GetBucketNotification returns current bucket notification configuration
+func (c *Client) GetBucketNotification(ctx context.Context, bucketName string) (bucketNotification notification.Configuration, err error) {
+        // Input validation.
+        if err := s3utils.CheckValidBucketName(bucketName); err != nil {
+                return notification.Configuration{}, err
+        }
+        return c.getBucketNotification(ctx, bucketName)
+}
+
+// Request server for notification rules.
+func (c *Client) getBucketNotification(ctx context.Context, bucketName string) (notification.Configuration, error) {
+        urlValues := make(url.Values)
+        urlValues.Set("notification", "")
+
+        // Execute GET on bucket to list objects.
+        resp, err := c.executeMethod(ctx, http.MethodGet, requestMetadata{
+                bucketName:       bucketName,
+                queryValues:      urlValues,
+                contentSHA256Hex: emptySHA256Hex,
+        })
+
+        defer closeResponse(resp)
+        if err != nil {
+                return notification.Configuration{}, err
+        }
+        return processBucketNotificationResponse(bucketName, resp)
+}
+
+// processes the GetNotification http response from the server.
+func processBucketNotificationResponse(bucketName string, resp *http.Response) (notification.Configuration, error) {
+        if resp.StatusCode != http.StatusOK {
+                errResponse := httpRespToErrorResponse(resp, bucketName, "")
+                return notification.Configuration{}, errResponse
+        }
+        var bucketNotification notification.Configuration
+        err := xmlDecoder(resp.Body, &bucketNotification)
+        if err != nil {
+                return notification.Configuration{}, err
+        }
+        return bucketNotification, nil
+}
+
+// ListenNotification listen for all events, this is a MinIO specific API
+func (c *Client) ListenNotification(ctx context.Context, prefix, suffix string, events []string) <-chan notification.Info {
+        return c.ListenBucketNotification(ctx, "", prefix, suffix, events)
+}
+
+// ListenBucketNotification listen for bucket events, this is a MinIO specific API
+func (c *Client) ListenBucketNotification(ctx context.Context, bucketName, prefix, suffix string, events []string) <-chan notification.Info {
+        notificationInfoCh := make(chan notification.Info, 1)
+        const notificationCapacity = 4 * 1024 * 1024
+        notificationEventBuffer := make([]byte, notificationCapacity)
+        // Only success, start a routine to start reading line by line.
+        go func(notificationInfoCh chan<- notification.Info) {
+                defer close(notificationInfoCh)
+
+                // Validate the bucket name.
+                if bucketName != "" {
+                        if err := s3utils.CheckValidBucketName(bucketName); err != nil {
+                                select {
+                                case notificationInfoCh <- notification.Info{
+                                        Err: err,
+                                }:
+                                case <-ctx.Done():
+                                }
+                                return
+                        }
+                }
+
+                // Check ARN partition to verify if listening bucket is supported
+                if s3utils.IsAmazonEndpoint(*c.endpointURL) || s3utils.IsGoogleEndpoint(*c.endpointURL) {
+                        select {
+                        case notificationInfoCh <- notification.Info{
+                                Err: errAPINotSupported("Listening for bucket notification is specific only to `minio` server endpoints"),
+                        }:
+                        case <-ctx.Done():
+                        }
+                        return
+                }
+
+                // Continuously run and listen on bucket notification.
+                // Create a done channel to control 'ListObjects' go routine.
+                retryDoneCh := make(chan struct{}, 1)
+
+                // Indicate to our routine to exit cleanly upon return.
+                defer close(retryDoneCh)
+
+                // Prepare urlValues to pass into the request on every loop
+                urlValues := make(url.Values)
+                urlValues.Set("ping", "10")
+                urlValues.Set("prefix", prefix)
+                urlValues.Set("suffix", suffix)
+                urlValues["events"] = events
+
+                // Wait on the jitter retry loop.
+                for range c.newRetryTimerContinous(time.Second, time.Second*30, MaxJitter, retryDoneCh) {
+                        // Execute GET on bucket to list objects.
+                        resp, err := c.executeMethod(ctx, http.MethodGet, requestMetadata{
+                                bucketName:       bucketName,
+                                queryValues:      urlValues,
+                                contentSHA256Hex: emptySHA256Hex,
+                        })
+                        if err != nil {
+                                select {
+                                case notificationInfoCh <- notification.Info{
+                                        Err: err,
+                                }:
+                                case <-ctx.Done():
+                                }
+                                return
+                        }
+
+                        // Validate http response, upon error return quickly.
+                        if resp.StatusCode != http.StatusOK {
+                                errResponse := httpRespToErrorResponse(resp, bucketName, "")
+                                select {
+                                case notificationInfoCh <- notification.Info{
+                                        Err: errResponse,
+                                }:
+                                case <-ctx.Done():
+                                }
+                                return
+                        }
+
+                        // Initialize a new bufio scanner, to read line by line.
+                        bio := bufio.NewScanner(resp.Body)
+
+                        // Use a higher buffer to support unexpected
+                        // caching done by proxies
+                        bio.Buffer(notificationEventBuffer, notificationCapacity)
+                        json := jsoniter.ConfigCompatibleWithStandardLibrary
+
+                        // Unmarshal each line, returns marshaled values.
+                        for bio.Scan() {
+                                var notificationInfo notification.Info
+                                if err = json.Unmarshal(bio.Bytes(), &notificationInfo); err != nil {
+                                        // Unexpected error during json unmarshal, send
+                                        // the error to caller for actionable as needed.
+                                        select {
+                                        case notificationInfoCh <- notification.Info{
+                                                Err: err,
+                                        }:
+                                        case <-ctx.Done():
+                                                return
+                                        }
+                                        closeResponse(resp)
+                                        continue
+                                }
+
+                                // Empty events pinged from the server
+                                if len(notificationInfo.Records) == 0 && notificationInfo.Err == nil {
+                                        continue
+                                }
+
+                                // Send notificationInfo
+                                select {
+                                case notificationInfoCh <- notificationInfo:
+                                case <-ctx.Done():
+                                        closeResponse(resp)
+                                        return
+                                }
+                        }
+
+                        if err = bio.Err(); err != nil {
+                                select {
+                                case notificationInfoCh <- notification.Info{
+                                        Err: err,
+                                }:
+                                case <-ctx.Done():
+                                        return
+                                }
+                        }
+
+                        // Close current connection before looping further.
+                        closeResponse(resp)
+
+                }
+        }(notificationInfoCh)
+
+        // Returns the notification info channel, for caller to start reading from.
+        return notificationInfoCh
+}