Jay Brown
477518e5eb
API instrumentation - metrics and logging * api instrumentation prometheus metrics and logging for all routes * Merge branch 'main' of bitbucket.org:aarete/query-orchestration into feature/prometheus * add log_level and sync the config initialize * docs * cleanup * add to compose:up:test * docs for prometheus testing * custom metrics * cleanup * merge main * add tests * cleanup docs * cleanup * lint * fix unit tests (attempt) * fix tests * resolvesetlogger * expose 8080 * compose changes * bugfixesformichael * don't build _test * merge in main * job_sync_runner
38 lines
1.2 KiB
Go
38 lines
1.2 KiB
Go
// Copyright 2019 The Prometheus Authors
|
|
// 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 util
|
|
|
|
import (
|
|
"io"
|
|
"os"
|
|
)
|
|
|
|
// ReadFileNoStat uses io.ReadAll to read contents of entire file.
|
|
// This is similar to os.ReadFile but without the call to os.Stat, because
|
|
// many files in /proc and /sys report incorrect file sizes (either 0 or 4096).
|
|
// Reads a max file size of 1024kB. For files larger than this, a scanner
|
|
// should be used.
|
|
func ReadFileNoStat(filename string) ([]byte, error) {
|
|
const maxBufferSize = 1024 * 1024
|
|
|
|
f, err := os.Open(filename)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer f.Close()
|
|
|
|
reader := io.LimitReader(f, maxBufferSize)
|
|
return io.ReadAll(reader)
|
|
}
|