func (h *httpFSHandler) open(w http.ResponseWriter, r *http.Request) error {
fi, err := h.fs.Stat(r.URL.Path)
if err != nil {
return err
}
notMod := false
if ifModSince, err := http.ParseTime(r.Header.Get("if-modified-since")); err == nil {
if !fi.ModTime().IsZero() && fi.ModTime().Before(ifModSince) {
w.WriteHeader(http.StatusNotModified)
notMod = true
}
}
writeFileInfoHeaders(w, fi, true)
if notMod {
return nil
}
f, err := h.fs.Open(r.URL.Path)
if err != nil {
return err
}
defer f.Close()
_, err = io.Copy(w, f)
return err
}
func (r *Resource) Expires() (time.Time, error) {
if expires := r.header.Get("Expires"); expires != "" {
return http.ParseTime(expires)
}
return time.Time{}, nil
}
func (r *Resource) MaxAge(shared bool) (time.Duration, error) {
cc, err := r.cacheControl()
if err != nil {
return time.Duration(0), err
}
if cc.Has("s-maxage") && shared {
if maxAge, err := cc.Duration("s-maxage"); err != nil {
return time.Duration(0), err
} else if maxAge > 0 {
return maxAge, nil
}
}
if cc.Has("max-age") {
if maxAge, err := cc.Duration("max-age"); err != nil {
return time.Duration(0), err
} else if maxAge > 0 {
return maxAge, nil
}
}
if expiresVal := r.header.Get("Expires"); expiresVal != "" {
expires, err := http.ParseTime(expiresVal)
if err != nil {
return time.Duration(0), err
}
return expires.Sub(Clock()), nil
}
return time.Duration(0), nil
}
func (h *Host) storeRateLimit(call string, headers http.Header) {
// check for Bucket header
var err error
l, err := strconv.ParseInt(headers.Get("x-ratelimit-limit"), 10, 32)
if err != nil {
debugLogger.Println("Error parsing rate limit:", err)
}
u, err := strconv.ParseInt(headers.Get("x-ratelimit-used"), 10, 32)
if err != nil {
debugLogger.Println("Error parsing rate limit used:", err)
}
r, err := strconv.ParseInt(headers.Get("x-ratelimit-remaining"), 10, 32)
if err != nil {
debugLogger.Println("Error parsing rate limit remaining:", err)
}
debugLogger.Println(headers.Get("Date"))
lc, err := http.ParseTime(headers.Get("Date"))
if err != nil {
debugLogger.Println("Error parsing date header:", err)
}
info := RateLimitInfo{Bucket: headers.Get("x-ratelimit-bucket"),
Used: int(u), Limit: int(l), Remaining: int(r), LastCall: lc, Drift: time.Now().Sub(lc)}
debugLogger.Println("storing rate limit info for", call, "info", info)
h.rateLimitLock.Lock()
defer h.rateLimitLock.Unlock()
if info.LastCall.After(h.rateLimits[info.Bucket].LastCall) || info.LastCall == h.rateLimits[info.Bucket].LastCall {
h.callToBucket[call] = info.Bucket
h.rateLimits[info.Bucket] = info
}
}
// Check the server time is the same as ours, once for each server
func checkServerTime(req *http.Request, resp *http.Response) {
host := req.URL.Host
if req.Host != "" {
host = req.Host
}
checkedHostMu.RLock()
_, ok := checkedHost[host]
checkedHostMu.RUnlock()
if ok {
return
}
dateString := resp.Header.Get("Date")
if dateString == "" {
return
}
date, err := http.ParseTime(dateString)
if err != nil {
Debug(nil, "Couldn't parse Date: from server %s: %q: %v", host, dateString, err)
return
}
dt := time.Since(date)
const window = 5 * 60 * time.Second
if dt > window || dt < -window {
Log(nil, "Time may be set wrong - time from %q is %v different from this computer", host, dt)
}
checkedHostMu.Lock()
checkedHost[host] = struct{}{}
checkedHostMu.Unlock()
}
func parseSearchResponse(httpResponse io.Reader, responseAddr *net.UDPAddr) (*SearchResponse, error) {
reader := bufio.NewReader(httpResponse)
request := &http.Request{} // Needed for ReadResponse but doesn't have to be real
response, err := http.ReadResponse(reader, request)
if err != nil {
return nil, err
}
headers := response.Header
res := &SearchResponse{}
res.Control = headers.Get("cache-control")
res.Server = headers.Get("server")
res.ST = headers.Get("st")
res.Ext = headers.Get("ext")
res.USN = headers.Get("usn")
res.ResponseAddr = responseAddr
if headers.Get("location") != "" {
res.Location, err = response.Location()
if err != nil {
return nil, err
}
}
date := headers.Get("date")
if date != "" {
res.Date, err = http.ParseTime(date)
if err != nil {
return nil, err
}
}
return res, nil
}
func parse_time2(txt string) time.Time {
t, err := http.ParseTime(txt)
if err == nil {
t = time.Now()
}
return t
}
func timeHeader(key string, h http.Header) (time.Time, error) {
if header := h.Get(key); header != "" {
return http.ParseTime(header)
} else {
return time.Time{}, errNoHeader
}
}
func retryAfter(v string) time.Duration {
if i, err := strconv.Atoi(v); err == nil {
return time.Duration(i) * time.Second
}
if t, err := http.ParseTime(v); err == nil {
return t.Sub(time.Now())
}
return time.Second
}
func (self *JenkinsClientDownloader) downloadJar(config *util.Config) error {
util.GOut("DOWNLOAD", "Getting latest Jenkins client %v", (config.CIHostURI + "/" + ClientJarURL))
// Create the HTTP request.
request, err := config.CIRequest("GET", ClientJarURL, nil)
if err != nil {
return err
}
if fi, err := os.Stat(ClientJarName); err == nil {
request.Header.Add("If-Modified-Since", fi.ModTime().Format(http.TimeFormat))
}
// Perform the HTTP request.
var source io.ReadCloser
sourceTime := time.Now()
if response, err := config.CIClient().Do(request); err == nil {
defer response.Body.Close()
source = response.Body
if response.StatusCode == 304 {
util.GOut("DOWNLOAD", "Jenkins client is up-to-date, no need to download.")
return nil
} else if response.StatusCode != 200 {
return fmt.Errorf("Failed downloading jenkins client. Cause: HTTP-%v %v", response.StatusCode, response.Status)
}
if value := response.Header.Get("Last-Modified"); value != "" {
if time, err := http.ParseTime(value); err == nil {
sourceTime = time
}
}
} else {
return fmt.Errorf("Failed downloading jenkins client. Connect failed. Cause: %v", err)
}
target, err := os.Create(ClientJarDownloadName)
defer target.Close()
if err != nil {
return fmt.Errorf("Failed downloading jenkins client. Cannot create local file. Cause: %v", err)
}
if _, err = io.Copy(target, source); err == nil {
target.Close()
if err = os.Remove(ClientJarName); err == nil || os.IsNotExist(err) {
if err = os.Rename(ClientJarDownloadName, ClientJarName); err == nil {
os.Chtimes(ClientJarName, sourceTime, sourceTime)
}
}
return err
} else {
return fmt.Errorf("Failed downloading jenkins client. Transfer failed. Cause: %v", err)
}
}
func (r *Resource) DateAfter(d time.Time) bool {
if dateHeader := r.header.Get("Date"); dateHeader != "" {
if t, err := http.ParseTime(dateHeader); err != nil {
return false
} else {
return t.After(d)
}
}
return false
}
func retryAfter(v string) (time.Duration, error) {
if i, err := strconv.Atoi(v); err == nil {
return time.Duration(i) * time.Second, nil
}
t, err := http.ParseTime(v)
if err != nil {
return 0, err
}
return t.Sub(timeNow()), nil
}
func (r *Resource) LastModified() time.Time {
var modTime time.Time
if lastModHeader := r.header.Get("Last-Modified"); lastModHeader != "" {
if t, err := http.ParseTime(lastModHeader); err == nil {
modTime = t
}
}
return modTime
}
// return later time
func GetLaterTimeStr(a, b string) (result string, err error) {
timeA, err := http.ParseTime(a)
if nil != err {
log.Printf("[ERROR] failed to parse string %s as http time", a)
return
}
timeB, err := http.ParseTime(b)
if nil != err {
log.Printf("[ERROR] failed to parse string %s as http time", b)
return
}
if timeA.After(timeB) {
result = a
} else {
result = b
}
return
}
// checkETag implements If-None-Match and If-Range checks.
//
// The ETag or modtime must have been previously set in the
// ResponseWriter's headers. The modtime is only compared at second
// granularity and may be the zero value to mean unknown.
//
// The return value is the effective request "Range" header to use and
// whether this request is now considered done.
func checkETag(w http.ResponseWriter, r *http.Request, modtime time.Time) (rangeReq string, done bool) {
etag := w.Header().Get("Etag")
rangeReq = r.Header.Get("Range")
// Invalidate the range request if the entity doesn't match the one
// the client was expecting.
// "If-Range: version" means "ignore the Range: header unless version matches the
// current file."
// We only support ETag versions.
// The caller must have set the ETag on the response already.
if ir := r.Header.Get("If-Range"); ir != "" && ir != etag {
// The If-Range value is typically the ETag value, but it may also be
// the modtime date. See golang.org/issue/8367.
timeMatches := false
if !modtime.IsZero() {
if t, err := http.ParseTime(ir); err == nil && t.Unix() == modtime.Unix() {
timeMatches = true
}
}
if !timeMatches {
rangeReq = ""
}
}
if inm := r.Header.Get("If-None-Match"); inm != "" {
// Must know ETag.
if etag == "" {
return rangeReq, false
}
// TODO(bradfitz): non-GET/HEAD requests require more work:
// sending a different status code on matches, and
// also can't use weak cache validators (those with a "W/
// prefix). But most users of ServeContent will be using
// it on GET or HEAD, so only support those for now.
if r.Method != "GET" && r.Method != "HEAD" {
return rangeReq, false
}
// TODO(bradfitz): deal with comma-separated or multiple-valued
// list of If-None-match values. For now just handle the common
// case of a single item.
if inm == etag || inm == "*" {
h := w.Header()
delete(h, "Content-Type")
delete(h, "Content-Length")
w.WriteHeader(http.StatusNotModified)
return "", true
}
}
return rangeReq, false
}
func (r *responderimpl) Modified(t time.Time, ot OperationType) bool {
t = t.UTC()
r.hw.Header().Set("Last-Modified", t.Format(http.TimeFormat))
nt, te := http.ParseTime(r.r.Header.Get("If-Modified-Since"))
if te != nil {
return false
}
b := nt.Second() == t.Second()
if (b && ot&SIMULATE == 0) || ot&FORCE != 0 {
r.hw.WriteHeader(http.StatusNotModified)
}
return b
}
func main() {
req, _ := http.NewRequest("GET", "http://www.example.com/", nil)
res, _ := http.DefaultClient.Do(req)
_, _ = ioutil.ReadAll(res.Body)
reqDir, _ := cacheobject.ParseRequestCacheControl(req.Header.Get("Cache-Control"))
resDir, _ := cacheobject.ParseResponseCacheControl(res.Header.Get("Cache-Control"))
expiresHeader, _ := http.ParseTime(res.Header.Get("Expires"))
dateHeader, _ := http.ParseTime(res.Header.Get("Date"))
lastModifiedHeader, _ := http.ParseTime(res.Header.Get("Last-Modified"))
obj := cacheobject.Object{
RespDirectives: resDir,
RespHeaders: res.Header,
RespStatusCode: res.StatusCode,
RespExpiresHeader: expiresHeader,
RespDateHeader: dateHeader,
RespLastModifiedHeader: lastModifiedHeader,
ReqDirectives: reqDir,
ReqHeaders: req.Header,
ReqMethod: req.Method,
NowUTC: time.Now().UTC(),
}
rv := cacheobject.ObjectResults{}
cacheobject.CachableObject(&obj, &rv)
cacheobject.ExpirationObject(&obj, &rv)
fmt.Println("Errors: ", rv.OutErr)
fmt.Println("Reasons to not cache: ", rv.OutReasons)
fmt.Println("Warning headers to add: ", rv.OutWarnings)
fmt.Println("Expiration: ", rv.OutExpirationTime.String())
}
// fetchRemoteFile retrieves codelab resource from url.
// It is a special case of fetchRemote function.
func fetchRemoteFile(url string) (*resource, error) {
res, err := retryGet(nil, url, 3)
if err != nil {
return nil, err
}
t, err := http.ParseTime(res.Header.Get("last-modified"))
if err != nil {
t = time.Now()
}
return &resource{
body: res.Body,
mod: t,
typ: srcMarkdown,
}, nil
}
func checkETag(reply *Reply, r *http.Request, modtime time.Time) (rangeReq string, done bool) {
etag := reply.GetHeader("Etag")
rangeReq = r.Header.Get("Range")
if ir := r.Header.Get("If-Range"); ir != "" && ir != etag {
// The If-Range value is typically the ETag value, but it may also be
// the modtime date. See golang.org/issue/8367.
timeMatches := false
if !modtime.IsZero() {
if t, err := http.ParseTime(ir); err == nil && t.Unix() == modtime.Unix() {
timeMatches = true
}
}
if !timeMatches {
rangeReq = ""
}
}
if inm := r.Header.Get("If-None-Match"); inm != "" {
// Must know ETag.
if etag == "" {
return rangeReq, false
}
// TODO(bradfitz): non-GET/HEAD requests require more work:
// sending a different status code on matches, and
// also can't use weak cache validators (those with a "W/
// prefix). But most users of ServeContent will be using
// it on GET or HEAD, so only support those for now.
if r.Method != "GET" && r.Method != "HEAD" {
return rangeReq, false
}
// TODO(bradfitz): deal with comma-separated or multiple-valued
// list of If-None-match values. For now just handle the common
// case of a single item.
if inm == etag || inm == "*" {
// h := w.Header()
reply.DelHeader("Content-Type")
reply.DelHeader("Content-Length")
reply.SetCode(http.StatusNotModified)
return "", true
}
}
return rangeReq, false
}
// ParseRetryAfter parses a Retry-After header value. Per RFC 7231
// section 7.1.3, the value may be either an absolute time or the
// number of seconds to wait.
func ParseRetryAfter(header string) (d time.Duration, ok bool) {
if len(header) == 0 {
return 0, false
}
sec, err := strconv.ParseInt(header, 10, 64)
if err != nil {
t, err := http.ParseTime(header)
if err != nil {
return 0, false
}
d = t.Sub(timeNow())
} else {
d = time.Duration(sec) * time.Second
}
if d > 0 {
return d, true
}
return 0, false
}
// Saves the response to the cache.
func saveResponse(response *http.Response, cacheEntry CacheEntry) error {
lastModifiedHeader := response.Header.Get("Last-Modified")
if lastModifiedHeader == "" {
lastModifiedHeader = response.Header.Get("Date")
if lastModifiedHeader == "" {
return errors.New("Missing Last-Modified and Date headers")
}
}
lastModified, err := http.ParseTime(lastModifiedHeader)
if err != nil {
return err
}
return cacheEntry.Write(response.Body, lastModified)
}
// DateTime parses date/time from string an returns a new DateTime object.
//
// If layout is given, DateTime() uses time.Parse() with given layout.
// Otherwise, it uses http.ParseTime(). If pasing error occurred,
// DateTime reports failure and returns empty (but non-nil) object.
//
// Example:
// str := NewString(t, "Tue, 15 Nov 1994 08:12:31 GMT")
// str.DateTime().Lt(time.Now())
//
// str := NewString(t, "15 Nov 94 08:12 GMT")
// str.DateTime(time.RFC822).Lt(time.Now())
func (s *String) DateTime(layout ...string) *DateTime {
if s.chain.failed() {
return &DateTime{s.chain, time.Unix(0, 0)}
}
var (
t time.Time
err error
)
if len(layout) != 0 {
t, err = time.Parse(layout[0], s.value)
} else {
t, err = http.ParseTime(s.value)
}
if err != nil {
s.chain.fail(err.Error())
return &DateTime{s.chain, time.Unix(0, 0)}
}
return &DateTime{s.chain, t}
}
func (h *httpFSHandler) open(w http.ResponseWriter, r *http.Request) error {
fi, err := h.fs.Stat(r.URL.Path)
if err != nil {
return err
}
notMod := false
if ifModSince, err := http.ParseTime(r.Header.Get("if-modified-since")); err == nil {
if !fi.ModTime().IsZero() && fi.ModTime().Before(ifModSince) {
w.WriteHeader(http.StatusNotModified)
notMod = true
}
}
writeFileInfoHeaders(w, fi)
if notMod {
return nil
}
f, err := h.fs.Open(r.URL.Path)
if err != nil {
return err
}
defer f.Close()
rdr := io.Reader(f)
// Support Range header.
if rangeHeader := r.Header.Get("range"); rangeHeader != "" {
bstart, bend, err := parseHTTPRange(rangeHeader)
if err != nil {
return err
}
if _, err := f.Seek(bstart, 0); err != nil {
return err
}
rdr = io.LimitReader(f, bend-bstart)
}
_, err = io.Copy(w, rdr)
return err
}
func setHTTPResponseFileInfo(resp *http.Response, fi *fileInfo) error {
if lastMod := resp.Header.Get("last-modified"); lastMod != "" {
var err error
fi.modTime, err = http.ParseTime(lastMod)
if err != nil {
return err
}
}
if resp.StatusCode >= 300 && resp.StatusCode <= 399 {
fi.symlink = true
}
switch resp.Header.Get("content-type") {
case httpFileContentType: // default, nothing to do
case httpDirContentType:
fi.dir = true
case httpSymlinkContentType:
fi.symlink = true
}
fi.size = resp.ContentLength
return nil
}
// Release unlocks the bucket and reads the headers to update the buckets ratelimit info
// and locks up the whole thing in case if there's a global ratelimit.
func (b *Bucket) Release(headers http.Header) error {
defer b.Unlock()
if headers == nil {
return nil
}
remaining := headers.Get("X-RateLimit-Remaining")
reset := headers.Get("X-RateLimit-Reset")
global := headers.Get("X-RateLimit-Global")
retryAfter := headers.Get("Retry-After")
// If it's global just keep the main ratelimit mutex locked
if global != "" {
parsedAfter, err := strconv.Atoi(retryAfter)
if err != nil {
return err
}
// Lock it in a new goroutine so that this isn't a blocking call
go func() {
// Make sure if several requests were waiting we don't sleep for n * retry-after
// where n is the amount of requests that were going on
sleepTo := time.Now().Add(time.Duration(parsedAfter) * time.Millisecond)
b.global.Lock()
sleepDuration := sleepTo.Sub(time.Now())
if sleepDuration > 0 {
time.Sleep(sleepDuration)
}
b.global.Unlock()
}()
return nil
}
// Update reset time if either retry after or reset headers are present
// Prefer retryafter because it's more accurate with time sync and whatnot
if retryAfter != "" {
parsedAfter, err := strconv.ParseInt(retryAfter, 10, 64)
if err != nil {
return err
}
b.reset = time.Now().Add(time.Duration(parsedAfter) * time.Millisecond)
} else if reset != "" {
// Calculate the reset time by using the date header returned from discord
discordTime, err := http.ParseTime(headers.Get("Date"))
if err != nil {
return err
}
unix, err := strconv.ParseInt(reset, 10, 64)
if err != nil {
return err
}
// Calculate the time until reset and add it to the current local time
// some extra time is added because without it i still encountered 429's.
// The added amount is the lowest amount that gave no 429's
// in 1k requests
delta := time.Unix(unix, 0).Sub(discordTime) + time.Millisecond*250
b.reset = time.Now().Add(delta)
}
// Udpate remaining if header is present
if remaining != "" {
parsedRemaining, err := strconv.ParseInt(remaining, 10, 32)
if err != nil {
return err
}
b.remaining = int(parsedRemaining)
}
return nil
}
func calcCopyInfo(b *Builder, cmdName string, cInfos *[]*copyInfo, origPath string, destPath string, allowRemote bool, allowDecompression bool) error {
if origPath != "" && origPath[0] == '/' && len(origPath) > 1 {
origPath = origPath[1:]
}
origPath = strings.TrimPrefix(origPath, "./")
// Twiddle the destPath when its a relative path - meaning, make it
// relative to the WORKINGDIR
if !filepath.IsAbs(destPath) {
hasSlash := strings.HasSuffix(destPath, "/")
destPath = filepath.Join("/", b.Config.WorkingDir, destPath)
// Make sure we preserve any trailing slash
if hasSlash {
destPath += "/"
}
}
// In the remote/URL case, download it and gen its hashcode
if urlutil.IsURL(origPath) {
if !allowRemote {
return fmt.Errorf("Source can't be a URL for %s", cmdName)
}
ci := copyInfo{}
ci.origPath = origPath
ci.hash = origPath // default to this but can change
ci.destPath = destPath
ci.decompress = false
*cInfos = append(*cInfos, &ci)
// Initiate the download
resp, err := utils.Download(ci.origPath)
if err != nil {
return err
}
// Create a tmp dir
tmpDirName, err := ioutil.TempDir(b.contextPath, "docker-remote")
if err != nil {
return err
}
ci.tmpDir = tmpDirName
// Create a tmp file within our tmp dir
tmpFileName := path.Join(tmpDirName, "tmp")
tmpFile, err := os.OpenFile(tmpFileName, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0600)
if err != nil {
return err
}
// Download and dump result to tmp file
if _, err := io.Copy(tmpFile, utils.ProgressReader(resp.Body, int(resp.ContentLength), b.OutOld, b.StreamFormatter, true, "", "Downloading")); err != nil {
tmpFile.Close()
return err
}
fmt.Fprintf(b.OutStream, "\n")
tmpFile.Close()
// Set the mtime to the Last-Modified header value if present
// Otherwise just remove atime and mtime
times := make([]syscall.Timespec, 2)
lastMod := resp.Header.Get("Last-Modified")
if lastMod != "" {
mTime, err := http.ParseTime(lastMod)
// If we can't parse it then just let it default to 'zero'
// otherwise use the parsed time value
if err == nil {
times[1] = syscall.NsecToTimespec(mTime.UnixNano())
}
}
if err := system.UtimesNano(tmpFileName, times); err != nil {
return err
}
ci.origPath = path.Join(filepath.Base(tmpDirName), filepath.Base(tmpFileName))
// If the destination is a directory, figure out the filename.
if strings.HasSuffix(ci.destPath, "/") {
u, err := url.Parse(origPath)
if err != nil {
return err
}
path := u.Path
if strings.HasSuffix(path, "/") {
path = path[:len(path)-1]
}
parts := strings.Split(path, "/")
filename := parts[len(parts)-1]
if filename == "" {
return fmt.Errorf("cannot determine filename from url: %s", u)
}
ci.destPath = ci.destPath + filename
}
// Calc the checksum, even if we're using the cache
r, err := archive.Tar(tmpFileName, archive.Uncompressed)
if err != nil {
return err
}
tarSum, err := tarsum.NewTarSum(r, true, tarsum.Version0)
if err != nil {
return err
}
if _, err := io.Copy(ioutil.Discard, tarSum); err != nil {
return err
}
ci.hash = tarSum.Sum(nil)
r.Close()
return nil
}
// Deal with wildcards
if ContainsWildcards(origPath) {
for _, fileInfo := range b.context.GetSums() {
if fileInfo.Name() == "" {
continue
}
match, _ := path.Match(origPath, fileInfo.Name())
if !match {
continue
}
calcCopyInfo(b, cmdName, cInfos, fileInfo.Name(), destPath, allowRemote, allowDecompression)
}
return nil
}
// Must be a dir or a file
if err := b.checkPathForAddition(origPath); err != nil {
return err
}
fi, _ := os.Stat(path.Join(b.contextPath, origPath))
ci := copyInfo{}
ci.origPath = origPath
ci.hash = origPath
ci.destPath = destPath
ci.decompress = allowDecompression
*cInfos = append(*cInfos, &ci)
// Deal with the single file case
if !fi.IsDir() {
// This will match first file in sums of the archive
fis := b.context.GetSums().GetFile(ci.origPath)
if fis != nil {
ci.hash = "file:" + fis.Sum()
}
return nil
}
// Must be a dir
var subfiles []string
absOrigPath := path.Join(b.contextPath, ci.origPath)
// Add a trailing / to make sure we only pick up nested files under
// the dir and not sibling files of the dir that just happen to
// start with the same chars
if !strings.HasSuffix(absOrigPath, "/") {
absOrigPath += "/"
}
// Need path w/o / too to find matching dir w/o trailing /
absOrigPathNoSlash := absOrigPath[:len(absOrigPath)-1]
for _, fileInfo := range b.context.GetSums() {
absFile := path.Join(b.contextPath, fileInfo.Name())
// Any file in the context that starts with the given path will be
// picked up and its hashcode used. However, we'll exclude the
// root dir itself. We do this for a coupel of reasons:
// 1 - ADD/COPY will not copy the dir itself, just its children
// so there's no reason to include it in the hash calc
// 2 - the metadata on the dir will change when any child file
// changes. This will lead to a miss in the cache check if that
// child file is in the .dockerignore list.
if strings.HasPrefix(absFile, absOrigPath) && absFile != absOrigPathNoSlash {
subfiles = append(subfiles, fileInfo.Sum())
}
}
sort.Strings(subfiles)
hasher := sha256.New()
hasher.Write([]byte(strings.Join(subfiles, ",")))
ci.hash = "dir:" + hex.EncodeToString(hasher.Sum(nil))
return nil
}
func (b *Builder) download(srcURL string) (fi builder.FileInfo, err error) {
// get filename from URL
u, err := url.Parse(srcURL)
if err != nil {
return
}
path := filepath.FromSlash(u.Path) // Ensure in platform semantics
if strings.HasSuffix(path, string(os.PathSeparator)) {
path = path[:len(path)-1]
}
parts := strings.Split(path, string(os.PathSeparator))
filename := parts[len(parts)-1]
if filename == "" {
err = fmt.Errorf("cannot determine filename from url: %s", u)
return
}
// Initiate the download
resp, err := httputils.Download(srcURL)
if err != nil {
return
}
// Prepare file in a tmp dir
tmpDir, err := ioutils.TempDir("", "docker-remote")
if err != nil {
return
}
defer func() {
if err != nil {
os.RemoveAll(tmpDir)
}
}()
tmpFileName := filepath.Join(tmpDir, filename)
tmpFile, err := os.OpenFile(tmpFileName, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0600)
if err != nil {
return
}
stdoutFormatter := b.Stdout.(*streamformatter.StdoutFormatter)
progressOutput := stdoutFormatter.StreamFormatter.NewProgressOutput(stdoutFormatter.Writer, true)
progressReader := progress.NewProgressReader(resp.Body, progressOutput, resp.ContentLength, "", "Downloading")
// Download and dump result to tmp file
if _, err = io.Copy(tmpFile, progressReader); err != nil {
tmpFile.Close()
return
}
fmt.Fprintln(b.Stdout)
// ignoring error because the file was already opened successfully
tmpFileSt, err := tmpFile.Stat()
if err != nil {
return
}
tmpFile.Close()
// Set the mtime to the Last-Modified header value if present
// Otherwise just remove atime and mtime
mTime := time.Time{}
lastMod := resp.Header.Get("Last-Modified")
if lastMod != "" {
// If we can't parse it then just let it default to 'zero'
// otherwise use the parsed time value
if parsedMTime, err := http.ParseTime(lastMod); err == nil {
mTime = parsedMTime
}
}
if err = system.Chtimes(tmpFileName, mTime, mTime); err != nil {
return
}
// Calc the checksum, even if we're using the cache
r, err := archive.Tar(tmpFileName, archive.Uncompressed)
if err != nil {
return
}
tarSum, err := tarsum.NewTarSum(r, true, tarsum.Version1)
if err != nil {
return
}
if _, err = io.Copy(ioutil.Discard, tarSum); err != nil {
return
}
hash := tarSum.Sum(nil)
r.Close()
return &builder.HashedFileInfo{FileInfo: builder.PathFileInfo{FileInfo: tmpFileSt, FilePath: tmpFileName}, FileHash: hash}, nil
}
// Evaluate cachability based on an HTTP request, and parts of the response.
func UsingRequestResponse(req *http.Request,
statusCode int,
respHeaders http.Header,
privateCache bool) ([]Reason, time.Time, error) {
var reqHeaders http.Header
var reqMethod string
var reqDir *RequestCacheDirectives = nil
respDir, err := ParseResponseCacheControl(respHeaders.Get("Cache-Control"))
if err != nil {
return nil, time.Time{}, err
}
if req != nil {
reqDir, err = ParseRequestCacheControl(req.Header.Get("Cache-Control"))
if err != nil {
return nil, time.Time{}, err
}
reqHeaders = req.Header
reqMethod = req.Method
}
var expiresHeader time.Time
var dateHeader time.Time
var lastModifiedHeader time.Time
if respHeaders.Get("Expires") != "" {
expiresHeader, err = http.ParseTime(respHeaders.Get("Expires"))
if err != nil {
return nil, time.Time{}, err
}
expiresHeader = expiresHeader.UTC()
}
if respHeaders.Get("Date") != "" {
dateHeader, err = http.ParseTime(respHeaders.Get("Date"))
if err != nil {
return nil, time.Time{}, err
}
dateHeader = dateHeader.UTC()
}
if respHeaders.Get("Last-Modified") != "" {
lastModifiedHeader, err = http.ParseTime(respHeaders.Get("Last-Modified"))
if err != nil {
return nil, time.Time{}, err
}
lastModifiedHeader = lastModifiedHeader.UTC()
}
obj := Object{
CacheIsPrivate: privateCache,
RespDirectives: respDir,
RespHeaders: respHeaders,
RespStatusCode: statusCode,
RespExpiresHeader: expiresHeader,
RespDateHeader: dateHeader,
RespLastModifiedHeader: lastModifiedHeader,
ReqDirectives: reqDir,
ReqHeaders: reqHeaders,
ReqMethod: reqMethod,
NowUTC: time.Now().UTC(),
}
rv := ObjectResults{}
CachableObject(&obj, &rv)
if rv.OutErr != nil {
return nil, time.Time{}, rv.OutErr
}
ExpirationObject(&obj, &rv)
if rv.OutErr != nil {
return nil, time.Time{}, rv.OutErr
}
return rv.OutReasons, rv.OutExpirationTime, nil
}
func ExecQuerySQL(dbPath string, expectSize int, sqlStr string, args ...interface{}) (caches []*HtmlCache, err error) {
_, err = os.Stat(dbPath)
if nil != err {
// db file not exists
log.Printf("[ERROR] db %s not exists", dbPath)
return
}
db, err := sql.Open(DB_DRIVER, dbPath)
if nil != err {
log.Printf("[ERROR] failed to open db %s: %s", dbPath, err)
return
}
defer db.Close()
statmt, err := db.Prepare(sqlStr)
if nil != err {
log.Printf("[ERROR] failed to prepare statment %s for db %s: %s", sqlStr, dbPath, err)
return
}
defer statmt.Close()
rows, err := statmt.Query(args...)
if nil != err {
log.Printf("[ERROR] failed to query with statment %s, %s", sqlStr, err)
return
}
defer rows.Close()
if expectSize > 0 {
caches = make([]*HtmlCache, expectSize)
}
rowInd := 0
for rows.Next() {
c := new(HtmlCache)
var urlStr, lastmod, expires, dateStr string
err = rows.Scan(
&urlStr,
&dateStr,
&c.CacheControl,
&lastmod,
&c.Etag,
&expires,
&c.Html)
if nil != err {
log.Printf("[ERROR] failed to scan data from result row: %s", err)
return
}
// decompress html data
if 0 != *gGzipCompressLevel {
buff := bytes.NewBuffer(c.Html)
gzipR, err := gzip.NewReader(buff)
if nil != err {
if *gDebug {
log.Printf("[WARN] failed to decompress html data for %s: %s", urlStr, err)
}
} else {
c.Html, err = ioutil.ReadAll(gzipR)
}
}
if c.URL, err = url.Parse(urlStr); nil != err {
log.Printf("[ERROR] failed to parse url from rawurl string %s: %s", urlStr, err)
}
if "" != lastmod {
c.LastModified = new(time.Time)
if *c.LastModified, err = http.ParseTime(lastmod); nil != err {
log.Printf("[ERROR] failed to parse lastmod time string %s: %s", lastmod, err)
}
}
if "" != expires {
c.Expires = new(time.Time)
if *c.Expires, err = http.ParseTime(expires); nil != err {
log.Printf("[ERROR] failed to parse expires time string %s: %s", expires, err)
}
}
if "" != dateStr {
c.Date = new(time.Time)
if *c.Date, err = http.ParseTime(dateStr); nil != err {
log.Printf("[ERROR] failed to parse cache date %s: %s", dateStr, err)
}
}
caches = append(caches[:rowInd], c)
rowInd += 1
}
// no result is also an error
if 0 == rowInd {
err = DBNoRecordError{}
return
}
return
}
// returned inode has nil Id
func (fs *Ossvfs) LookUpInodeMaybeDir(name string, fullName string) (inode *Inode, err error) {
errObjectChan := make(chan error, 1)
objectChan := make(chan *http.Response, 1)
errDirChan := make(chan error, 1)
dirChan := make(chan *oss.ListResp, 1)
go fs.LookUpInodeNotDir(fullName, objectChan, errObjectChan)
go fs.LookUpInodeDir(fullName, dirChan, errDirChan)
notFound := false
for {
select {
// TODO: if both object and object/ exists, return dir
case resp := <-objectChan:
inode = NewInode(&name, &fullName, fs.flags)
lastModifiedTime, tmperr := http.ParseTime(resp.Header.Get("Last-Modified"))
if tmperr != nil {
panic("Last " + resp.Header.Get("Last-Modified") + " modified time is invalid")
}
inode.Attributes = &fuseops.InodeAttributes{
Size: uint64(resp.ContentLength),
Nlink: 1,
Mode: fs.flags.FileMode,
Atime: lastModifiedTime,
Mtime: lastModifiedTime,
Ctime: lastModifiedTime,
Crtime: lastModifiedTime,
Uid: fs.flags.Uid,
Gid: fs.flags.Gid,
}
return
case err = <-errObjectChan:
if err == fuse.ENOENT {
if notFound {
return nil, err
} else {
notFound = true
err = nil
}
} else {
//TODO: retry
}
case resp := <-dirChan:
if len(resp.CommonPrefixes) != 0 || len(resp.Contents) != 0 {
inode = NewInode(&name, &fullName, fs.flags)
inode.Attributes = &fs.rootAttrs
return
} else {
// 404
if notFound {
return nil, fuse.ENOENT
} else {
notFound = true
}
}
case err = <-errDirChan:
//TODO: retry
}
}
}
