mirror of https://github.com/minio/minio.git
89 lines
2.1 KiB
Go
89 lines
2.1 KiB
Go
/*
|
|
* Minio Cloud Storage, (C) 2018 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 logger
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
"errors"
|
|
"net/http"
|
|
)
|
|
|
|
// HTTPTarget implements loggerTarget and sends the json
|
|
// format of a log entry to the configured http endpoint.
|
|
// An internal buffer of logs is maintained but when the
|
|
// buffer is full, new logs are just ignored and an error
|
|
// is returned to the caller.
|
|
type HTTPTarget struct {
|
|
// Channel of log entries
|
|
logCh chan logEntry
|
|
// HTTP(s) endpoint
|
|
endpoint string
|
|
client http.Client
|
|
}
|
|
|
|
func (h *HTTPTarget) startHTTPLogger() {
|
|
// Create a routine which sends json logs received
|
|
// from an internal channel.
|
|
go func() {
|
|
for entry := range h.logCh {
|
|
logJSON, err := json.Marshal(&entry)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
|
|
req, err := http.NewRequest("POST", h.endpoint, bytes.NewBuffer(logJSON))
|
|
req.Header.Set("Content-Type", "application/json")
|
|
|
|
resp, err := h.client.Do(req)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
if resp.Body != nil {
|
|
resp.Body.Close()
|
|
}
|
|
}
|
|
}()
|
|
}
|
|
|
|
// NewHTTP initializes a new logger target which
|
|
// sends log over http to the specified endpoint
|
|
func NewHTTP(endpoint string, transport *http.Transport) LoggingTarget {
|
|
h := HTTPTarget{
|
|
endpoint: endpoint,
|
|
client: http.Client{
|
|
Transport: transport,
|
|
},
|
|
logCh: make(chan logEntry, 10000),
|
|
}
|
|
|
|
h.startHTTPLogger()
|
|
return &h
|
|
}
|
|
|
|
func (h *HTTPTarget) send(entry logEntry) error {
|
|
select {
|
|
case h.logCh <- entry:
|
|
default:
|
|
// log channel is full, do not wait and return
|
|
// an error immediately to the caller
|
|
return errors.New("log buffer full")
|
|
}
|
|
|
|
return nil
|
|
}
|