mirror of
https://github.com/superseriousbusiness/gotosocial.git
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9d0df426da
* feat: vendor minio client * feat: introduce storage package with s3 support * feat: serve s3 files directly this saves a lot of bandwith as the files are fetched from the object store directly * fix: use explicit local storage in tests * feat: integrate s3 storage with the main server * fix: add s3 config to cli tests * docs: explicitly set values in example config also adds license header to the storage package * fix: use better http status code on s3 redirect HTTP 302 Found is the best fit, as it signifies that the resource requested was found but not under its presumed URL 307/TemporaryRedirect would mean that this resource is usually located here, not in this case 303/SeeOther indicates that the redirection does not link to the requested resource but to another page * refactor: use context in storage driver interface
255 lines
7.7 KiB
Go
255 lines
7.7 KiB
Go
/*
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* MinIO Go Library for Amazon S3 Compatible Cloud Storage
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* Copyright 2017-2020 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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"bufio"
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"bytes"
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"context"
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"encoding/xml"
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"net/http"
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"net/url"
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"time"
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jsoniter "github.com/json-iterator/go"
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"github.com/minio/minio-go/v7/pkg/notification"
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"github.com/minio/minio-go/v7/pkg/s3utils"
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)
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// SetBucketNotification saves a new bucket notification with a context to control cancellations and timeouts.
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func (c *Client) SetBucketNotification(ctx context.Context, bucketName string, config notification.Configuration) 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("notification", "")
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notifBytes, err := xml.Marshal(&config)
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if err != nil {
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return err
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}
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notifBuffer := bytes.NewReader(notifBytes)
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reqMetadata := requestMetadata{
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bucketName: bucketName,
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queryValues: urlValues,
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contentBody: notifBuffer,
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contentLength: int64(len(notifBytes)),
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contentMD5Base64: sumMD5Base64(notifBytes),
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contentSHA256Hex: sum256Hex(notifBytes),
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}
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// Execute PUT to upload a new bucket notification.
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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 != nil {
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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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}
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return nil
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}
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// RemoveAllBucketNotification - Remove bucket notification clears all previously specified config
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func (c *Client) RemoveAllBucketNotification(ctx context.Context, bucketName string) error {
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return c.SetBucketNotification(ctx, bucketName, notification.Configuration{})
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}
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// GetBucketNotification returns current bucket notification configuration
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func (c *Client) GetBucketNotification(ctx context.Context, bucketName string) (bucketNotification notification.Configuration, err error) {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return notification.Configuration{}, err
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}
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return c.getBucketNotification(ctx, bucketName)
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}
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// Request server for notification rules.
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func (c *Client) getBucketNotification(ctx context.Context, bucketName string) (notification.Configuration, error) {
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urlValues := make(url.Values)
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urlValues.Set("notification", "")
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// Execute GET on bucket to list objects.
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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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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 notification.Configuration{}, err
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}
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return processBucketNotificationResponse(bucketName, resp)
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}
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// processes the GetNotification http response from the server.
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func processBucketNotificationResponse(bucketName string, resp *http.Response) (notification.Configuration, error) {
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if resp.StatusCode != http.StatusOK {
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errResponse := httpRespToErrorResponse(resp, bucketName, "")
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return notification.Configuration{}, errResponse
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}
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var bucketNotification notification.Configuration
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err := xmlDecoder(resp.Body, &bucketNotification)
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if err != nil {
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return notification.Configuration{}, err
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}
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return bucketNotification, nil
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}
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// ListenNotification listen for all events, this is a MinIO specific API
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func (c *Client) ListenNotification(ctx context.Context, prefix, suffix string, events []string) <-chan notification.Info {
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return c.ListenBucketNotification(ctx, "", prefix, suffix, events)
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}
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// ListenBucketNotification listen for bucket events, this is a MinIO specific API
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func (c *Client) ListenBucketNotification(ctx context.Context, bucketName, prefix, suffix string, events []string) <-chan notification.Info {
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notificationInfoCh := make(chan notification.Info, 1)
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const notificationCapacity = 4 * 1024 * 1024
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notificationEventBuffer := make([]byte, notificationCapacity)
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// Only success, start a routine to start reading line by line.
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go func(notificationInfoCh chan<- notification.Info) {
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defer close(notificationInfoCh)
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// Validate the bucket name.
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if bucketName != "" {
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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select {
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case notificationInfoCh <- notification.Info{
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Err: err,
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}:
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case <-ctx.Done():
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}
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return
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}
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}
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// Check ARN partition to verify if listening bucket is supported
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if s3utils.IsAmazonEndpoint(*c.endpointURL) || s3utils.IsGoogleEndpoint(*c.endpointURL) {
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select {
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case notificationInfoCh <- notification.Info{
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Err: errAPINotSupported("Listening for bucket notification is specific only to `minio` server endpoints"),
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}:
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case <-ctx.Done():
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}
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return
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}
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// Continuously run and listen on bucket notification.
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// Create a done channel to control 'ListObjects' go routine.
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retryDoneCh := make(chan struct{}, 1)
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// Indicate to our routine to exit cleanly upon return.
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defer close(retryDoneCh)
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// Prepare urlValues to pass into the request on every loop
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urlValues := make(url.Values)
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urlValues.Set("prefix", prefix)
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urlValues.Set("suffix", suffix)
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urlValues["events"] = events
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// Wait on the jitter retry loop.
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for range c.newRetryTimerContinous(time.Second, time.Second*30, MaxJitter, retryDoneCh) {
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// Execute GET on bucket to list objects.
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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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contentSHA256Hex: emptySHA256Hex,
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})
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if err != nil {
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select {
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case notificationInfoCh <- notification.Info{
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Err: err,
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}:
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case <-ctx.Done():
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}
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return
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}
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// Validate http response, upon error return quickly.
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if resp.StatusCode != http.StatusOK {
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errResponse := httpRespToErrorResponse(resp, bucketName, "")
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select {
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case notificationInfoCh <- notification.Info{
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Err: errResponse,
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}:
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case <-ctx.Done():
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}
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return
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}
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// Initialize a new bufio scanner, to read line by line.
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bio := bufio.NewScanner(resp.Body)
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// Use a higher buffer to support unexpected
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// caching done by proxies
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bio.Buffer(notificationEventBuffer, notificationCapacity)
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json := jsoniter.ConfigCompatibleWithStandardLibrary
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// Unmarshal each line, returns marshaled values.
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for bio.Scan() {
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var notificationInfo notification.Info
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if err = json.Unmarshal(bio.Bytes(), ¬ificationInfo); err != nil {
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// Unexpected error during json unmarshal, send
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// the error to caller for actionable as needed.
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select {
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case notificationInfoCh <- notification.Info{
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Err: err,
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}:
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case <-ctx.Done():
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return
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}
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closeResponse(resp)
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continue
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}
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// Send notificationInfo
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select {
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case notificationInfoCh <- notificationInfo:
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case <-ctx.Done():
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closeResponse(resp)
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return
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}
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}
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if err = bio.Err(); err != nil {
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select {
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case notificationInfoCh <- notification.Info{
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Err: err,
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}:
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case <-ctx.Done():
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return
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}
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}
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// Close current connection before looping further.
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closeResponse(resp)
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}
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}(notificationInfoCh)
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// Returns the notification info channel, for caller to start reading from.
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return notificationInfoCh
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}
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