mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
88 lines
2.3 KiB
Go
88 lines
2.3 KiB
Go
// Copyright 2018 The containerd Authors.
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// Copyright 2018 The gVisor Authors.
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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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// https://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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package runsccmd
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import (
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"bytes"
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"strings"
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"sync"
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)
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var bytesBufferPool = sync.Pool{
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New: func() any {
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return bytes.NewBuffer(nil)
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},
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}
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func getBuf() *bytes.Buffer {
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return bytesBufferPool.Get().(*bytes.Buffer)
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}
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func putBuf(b *bytes.Buffer) {
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b.Reset()
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bytesBufferPool.Put(b)
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}
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// pathLikeFlags are runsc flags which refer to paths to files.
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var pathLikeFlags = []string{
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"log",
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"panic-log",
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"debug-log",
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"coverage-report",
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"profile-block",
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"profile-cpu",
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"profile-heap",
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"profile-mutex",
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"trace",
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}
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// replaceID replaces %ID% in `path` with the given sandbox ID.
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func replaceID(id string, path string) string {
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return strings.Replace(path, "%ID%", id, -1)
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}
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// EmittedPaths returns a list of file paths that the sandbox may need to
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// create using the given configuration. Useful to create parent directories.
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func EmittedPaths(id string, config map[string]string) []string {
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var paths []string
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for _, cfgFlag := range pathLikeFlags {
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if path, ok := config[cfgFlag]; ok {
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paths = append(paths, replaceID(id, path))
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}
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}
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return paths
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}
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// FormatRunscPaths fills in %ID% in path-like flags.
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func FormatRunscPaths(id string, config map[string]string) {
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for _, cfgFlag := range pathLikeFlags {
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if path, ok := config[cfgFlag]; ok {
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config[cfgFlag] = replaceID(id, path)
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}
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}
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}
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// FormatShimLogPath creates the file path to the log file. It replaces %ID%
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// in the path with the provided "id". It also uses a default log name if the
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// path ends with '/'.
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func FormatShimLogPath(path string, id string) string {
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if strings.HasSuffix(path, "/") {
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// Default format: <path>/runsc-shim-<ID>.log
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path += "runsc-shim-%ID%.log"
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}
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return replaceID(id, path)
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}
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