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minio/pkg/madmin/bandwidth.go

82 lines
2.1 KiB

/*
* MinIO Cloud Storage, (C) 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 madmin
import (
"context"
"encoding/json"
"net/http"
"net/url"
"strings"
"github.com/minio/minio/pkg/bandwidth"
)
// Report includes the bandwidth report or the error encountered.
type Report struct {
Report bandwidth.Report
Err error
}
// GetBucketBandwidth - Gets a channel reporting bandwidth measurements for replication buckets. If no buckets
// generate replication traffic an empty map is returned in the report until traffic is seen.
func (adm *AdminClient) GetBucketBandwidth(ctx context.Context, buckets ...string) <-chan Report {
queryValues := url.Values{}
ch := make(chan Report)
if len(buckets) > 0 {
queryValues.Set("buckets", strings.Join(buckets, ","))
}
reqData := requestData{
relPath: adminAPIPrefix + "/bandwidth",
queryValues: queryValues,
}
resp, err := adm.executeMethod(ctx, http.MethodGet, reqData)
if err != nil {
defer closeResponse(resp)
ch <- Report{bandwidth.Report{}, err}
return ch
}
if resp.StatusCode != http.StatusOK {
ch <- Report{bandwidth.Report{}, httpRespToErrorResponse(resp)}
return ch
}
dec := json.NewDecoder(resp.Body)
go func(ctx context.Context, ch chan<- Report, resp *http.Response) {
defer func() {
closeResponse(resp)
close(ch)
}()
for {
var report bandwidth.Report
if err = dec.Decode(&report); err != nil {
ch <- Report{bandwidth.Report{}, err}
return
}
select {
case <-ctx.Done():
return
case ch <- Report{Report: report, Err: err}:
}
}
}(ctx, ch, resp)
return ch
}