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rebase: update kubernetes to 1.28.0 in main
updating kubernetes to 1.28.0 in the main repo. Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This commit is contained in:
Madhu Rajanna
committed by
mergify[bot]
mergify[bot]
parent
b2fdc269c3
commit
ff3e84ad67
307
vendor/github.com/google/gnostic-models/compiler/reader.go
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vendored
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307
vendor/github.com/google/gnostic-models/compiler/reader.go
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// Copyright 2017 Google LLC. All Rights Reserved.
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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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package compiler
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import (
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"fmt"
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"io/ioutil"
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"log"
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"net/http"
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"net/url"
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"path/filepath"
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"strings"
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"sync"
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yaml "gopkg.in/yaml.v3"
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)
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var verboseReader = false
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var fileCache map[string][]byte
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var infoCache map[string]*yaml.Node
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var fileCacheEnable = true
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var infoCacheEnable = true
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// These locks are used to synchronize accesses to the fileCache and infoCache
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// maps (above). They are global state and can throw thread-related errors
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// when modified from separate goroutines. The general strategy is to protect
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// all public functions in this file with mutex Lock() calls. As a result, to
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// avoid deadlock, these public functions should not call other public
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// functions, so some public functions have private equivalents.
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// In the future, we might consider replacing the maps with sync.Map and
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// eliminating these mutexes.
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var fileCacheMutex sync.Mutex
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var infoCacheMutex sync.Mutex
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func initializeFileCache() {
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if fileCache == nil {
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fileCache = make(map[string][]byte, 0)
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}
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}
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func initializeInfoCache() {
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if infoCache == nil {
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infoCache = make(map[string]*yaml.Node, 0)
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}
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}
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// EnableFileCache turns on file caching.
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func EnableFileCache() {
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fileCacheMutex.Lock()
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defer fileCacheMutex.Unlock()
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fileCacheEnable = true
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}
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// EnableInfoCache turns on parsed info caching.
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func EnableInfoCache() {
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infoCacheMutex.Lock()
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defer infoCacheMutex.Unlock()
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infoCacheEnable = true
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}
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// DisableFileCache turns off file caching.
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func DisableFileCache() {
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fileCacheMutex.Lock()
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defer fileCacheMutex.Unlock()
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fileCacheEnable = false
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}
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// DisableInfoCache turns off parsed info caching.
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func DisableInfoCache() {
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infoCacheMutex.Lock()
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defer infoCacheMutex.Unlock()
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infoCacheEnable = false
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}
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// RemoveFromFileCache removes an entry from the file cache.
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func RemoveFromFileCache(fileurl string) {
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fileCacheMutex.Lock()
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defer fileCacheMutex.Unlock()
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if !fileCacheEnable {
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return
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}
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initializeFileCache()
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delete(fileCache, fileurl)
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}
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// RemoveFromInfoCache removes an entry from the info cache.
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func RemoveFromInfoCache(filename string) {
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infoCacheMutex.Lock()
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defer infoCacheMutex.Unlock()
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if !infoCacheEnable {
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return
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}
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initializeInfoCache()
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delete(infoCache, filename)
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}
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// GetInfoCache returns the info cache map.
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func GetInfoCache() map[string]*yaml.Node {
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infoCacheMutex.Lock()
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defer infoCacheMutex.Unlock()
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if infoCache == nil {
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initializeInfoCache()
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}
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return infoCache
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}
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// ClearFileCache clears the file cache.
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func ClearFileCache() {
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fileCacheMutex.Lock()
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defer fileCacheMutex.Unlock()
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fileCache = make(map[string][]byte, 0)
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}
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// ClearInfoCache clears the info cache.
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func ClearInfoCache() {
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infoCacheMutex.Lock()
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defer infoCacheMutex.Unlock()
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infoCache = make(map[string]*yaml.Node)
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}
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// ClearCaches clears all caches.
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func ClearCaches() {
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ClearFileCache()
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ClearInfoCache()
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}
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// FetchFile gets a specified file from the local filesystem or a remote location.
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func FetchFile(fileurl string) ([]byte, error) {
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fileCacheMutex.Lock()
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defer fileCacheMutex.Unlock()
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return fetchFile(fileurl)
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}
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func fetchFile(fileurl string) ([]byte, error) {
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var bytes []byte
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initializeFileCache()
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if fileCacheEnable {
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bytes, ok := fileCache[fileurl]
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if ok {
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if verboseReader {
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log.Printf("Cache hit %s", fileurl)
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}
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return bytes, nil
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}
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if verboseReader {
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log.Printf("Fetching %s", fileurl)
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}
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}
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response, err := http.Get(fileurl)
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if err != nil {
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return nil, err
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}
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defer response.Body.Close()
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if response.StatusCode != 200 {
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return nil, fmt.Errorf("Error downloading %s: %s", fileurl, response.Status)
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}
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bytes, err = ioutil.ReadAll(response.Body)
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if fileCacheEnable && err == nil {
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fileCache[fileurl] = bytes
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}
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return bytes, err
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}
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// ReadBytesForFile reads the bytes of a file.
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func ReadBytesForFile(filename string) ([]byte, error) {
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fileCacheMutex.Lock()
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defer fileCacheMutex.Unlock()
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return readBytesForFile(filename)
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}
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func readBytesForFile(filename string) ([]byte, error) {
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// is the filename a url?
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fileurl, _ := url.Parse(filename)
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if fileurl.Scheme != "" {
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// yes, fetch it
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bytes, err := fetchFile(filename)
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if err != nil {
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return nil, err
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}
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return bytes, nil
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}
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// no, it's a local filename
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bytes, err := ioutil.ReadFile(filename)
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if err != nil {
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return nil, err
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}
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return bytes, nil
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}
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// ReadInfoFromBytes unmarshals a file as a *yaml.Node.
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func ReadInfoFromBytes(filename string, bytes []byte) (*yaml.Node, error) {
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infoCacheMutex.Lock()
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defer infoCacheMutex.Unlock()
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return readInfoFromBytes(filename, bytes)
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}
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func readInfoFromBytes(filename string, bytes []byte) (*yaml.Node, error) {
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initializeInfoCache()
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if infoCacheEnable {
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cachedInfo, ok := infoCache[filename]
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if ok {
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if verboseReader {
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log.Printf("Cache hit info for file %s", filename)
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}
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return cachedInfo, nil
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}
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if verboseReader {
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log.Printf("Reading info for file %s", filename)
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}
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}
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var info yaml.Node
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err := yaml.Unmarshal(bytes, &info)
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if err != nil {
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return nil, err
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}
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if infoCacheEnable && len(filename) > 0 {
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infoCache[filename] = &info
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}
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return &info, nil
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}
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// ReadInfoForRef reads a file and return the fragment needed to resolve a $ref.
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func ReadInfoForRef(basefile string, ref string) (*yaml.Node, error) {
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fileCacheMutex.Lock()
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defer fileCacheMutex.Unlock()
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infoCacheMutex.Lock()
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defer infoCacheMutex.Unlock()
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initializeInfoCache()
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if infoCacheEnable {
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info, ok := infoCache[ref]
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if ok {
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if verboseReader {
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log.Printf("Cache hit for ref %s#%s", basefile, ref)
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}
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return info, nil
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}
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if verboseReader {
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log.Printf("Reading info for ref %s#%s", basefile, ref)
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}
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}
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basedir, _ := filepath.Split(basefile)
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parts := strings.Split(ref, "#")
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var filename string
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if parts[0] != "" {
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filename = parts[0]
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if _, err := url.ParseRequestURI(parts[0]); err != nil {
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// It is not an URL, so the file is local
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filename = basedir + parts[0]
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}
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} else {
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filename = basefile
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}
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bytes, err := readBytesForFile(filename)
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if err != nil {
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return nil, err
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}
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info, err := readInfoFromBytes(filename, bytes)
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if info != nil && info.Kind == yaml.DocumentNode {
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info = info.Content[0]
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}
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if err != nil {
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log.Printf("File error: %v\n", err)
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} else {
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if info == nil {
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return nil, NewError(nil, fmt.Sprintf("could not resolve %s", ref))
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}
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if len(parts) > 1 {
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path := strings.Split(parts[1], "/")
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for i, key := range path {
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if i > 0 {
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m := info
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if true {
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found := false
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for i := 0; i < len(m.Content); i += 2 {
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if m.Content[i].Value == key {
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info = m.Content[i+1]
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found = true
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}
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}
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if !found {
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infoCache[ref] = nil
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return nil, NewError(nil, fmt.Sprintf("could not resolve %s", ref))
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}
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}
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}
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}
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}
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}
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if infoCacheEnable {
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infoCache[ref] = info
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}
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return info, nil
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}
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