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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/198638">198638</a></dd>
<dt>Author</dt> <dd>commit-queue@webkit.org</dd>
<dt>Date</dt> <dd>2016-03-24 11:42:57 -0700 (Thu, 24 Mar 2016)</dd>
</dl>
<h3>Log Message</h3>
<pre>Improve update-webkit-dependency script.
https://bugs.webkit.org/show_bug.cgi?id=155576
Patch by Jeremy Zerfas <WebKit@JeremyZerfas.com> on 2016-03-24
Reviewed by Brent Fulgham.
* Scripts/update-webkit-dependency:
-Updated script to also use ETags for helping to determine whether dependency is up to date.
-Updated script so it usually won't need to download the entire dependency each time it is
ran.
-Updated script to ensure zip file contains expected directories before trying to install.
-Added some more error checking and improved error messages.
(lastModifiedToUnixTime): Deleted.
* Scripts/update-webkit-wincairo-libs:
-Corrected comment about what script does.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkToolsChangeLog">trunk/Tools/ChangeLog</a></li>
<li><a href="#trunkToolsScriptsupdatewebkitdependency">trunk/Tools/Scripts/update-webkit-dependency</a></li>
<li><a href="#trunkToolsScriptsupdatewebkitwincairolibs">trunk/Tools/Scripts/update-webkit-wincairo-libs</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkToolsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Tools/ChangeLog (198637 => 198638)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Tools/ChangeLog 2016-03-24 18:42:04 UTC (rev 198637)
+++ trunk/Tools/ChangeLog 2016-03-24 18:42:57 UTC (rev 198638)
</span><span class="lines">@@ -1,3 +1,21 @@
</span><ins>+2016-03-24 Jeremy Zerfas <WebKit@JeremyZerfas.com>
+
+ Improve update-webkit-dependency script.
+ https://bugs.webkit.org/show_bug.cgi?id=155576
+
+ Reviewed by Brent Fulgham.
+
+ * Scripts/update-webkit-dependency:
+ -Updated script to also use ETags for helping to determine whether dependency is up to date.
+ -Updated script so it usually won't need to download the entire dependency each time it is
+ ran.
+ -Updated script to ensure zip file contains expected directories before trying to install.
+ -Added some more error checking and improved error messages.
+ (lastModifiedToUnixTime): Deleted.
+
+ * Scripts/update-webkit-wincairo-libs:
+ -Corrected comment about what script does.
+
</ins><span class="cx"> 2016-03-24 Bill Ming <mbbill@gmail.com>
</span><span class="cx">
</span><span class="cx"> Fix webkitpy tests after r198617
</span></span></pre></div>
<a id="trunkToolsScriptsupdatewebkitdependency"></a>
<div class="modfile"><h4>Modified: trunk/Tools/Scripts/update-webkit-dependency (198637 => 198638)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Tools/Scripts/update-webkit-dependency 2016-03-24 18:42:04 UTC (rev 198637)
+++ trunk/Tools/Scripts/update-webkit-dependency 2016-03-24 18:42:57 UTC (rev 198638)
</span><span class="lines">@@ -2,19 +2,20 @@
</span><span class="cx">
</span><span class="cx"> # Copyright (C) 2005, 2006, 2007 Apple Inc. All rights reserved.
</span><span class="cx"> # Copyright (C) 2011 Carl Lobo. All rights reserved.
</span><ins>+# Copyright (C) 2016 Jeremy Zerfas. All rights reserved.
</ins><span class="cx"> #
</span><span class="cx"> # Redistribution and use in source and binary forms, with or without
</span><span class="cx"> # modification, are permitted provided that the following conditions
</span><span class="cx"> # are met:
</span><span class="cx"> #
</span><span class="cx"> # 1. Redistributions of source code must retain the above copyright
</span><del>-# notice, this list of conditions and the following disclaimer.
</del><ins>+# notice, this list of conditions and the following disclaimer.
</ins><span class="cx"> # 2. Redistributions in binary form must reproduce the above copyright
</span><span class="cx"> # notice, this list of conditions and the following disclaimer in the
</span><del>-# documentation and/or other materials provided with the distribution.
</del><ins>+# documentation and/or other materials provided with the distribution.
</ins><span class="cx"> # 3. Neither the name of Apple Inc. ("Apple") nor the names of
</span><span class="cx"> # its contributors may be used to endorse or promote products derived
</span><del>-# from this software without specific prior written permission.
</del><ins>+# from this software without specific prior written permission.
</ins><span class="cx"> #
</span><span class="cx"> # THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
</span><span class="cx"> # EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
</span><span class="lines">@@ -27,7 +28,7 @@
</span><span class="cx"> # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
</span><span class="cx"> # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
</span><span class="cx">
</span><del>-# Updates a development environment to the new WebKitAuxiliaryLibrary
</del><ins>+# Updates a dependency for the development environment.
</ins><span class="cx">
</span><span class="cx"> use strict;
</span><span class="cx"> use warnings;
</span><span class="lines">@@ -51,13 +52,12 @@
</span><span class="cx"> Usage:
</span><span class="cx"> update-webkit-dependancy <URL with the dependancy zip file> <*prefix dir inside zip without filename>
</span><span class="cx">
</span><del>- * If filename is requirements.zip and the contents of the zipfile are "requirements/x" then prefix = "."
- * If filename is xyz.zip and the contents of the zipfile are xyz/abc/x" then prefix = "abc"
</del><ins>+ * If filename is requirements.zip and the contents of the zip file are "requirements/x" then prefix = "."
+ * If filename is xyz.zip and the contents of the zip file are xyz/abc/x" then prefix = "abc"
</ins><span class="cx"> * x is lib or include or bin.
</span><span class="cx"> EOF
</span><span class="cx"> }
</span><span class="cx">
</span><del>-sub lastModifiedToUnixTime($);
</del><span class="cx"> sub getLibraryName($);
</span><span class="cx">
</span><span class="cx"> # Time in seconds that the new zip file must be newer than the old for us to
</span><span class="lines">@@ -71,76 +71,142 @@
</span><span class="cx"> my $prefixInZip = shift;
</span><span class="cx"> my $sourceDir = sourceDir();
</span><span class="cx"> my $file = getLibraryName($libsURL);
</span><del>-my $zipFile = "$file.zip";
</del><ins>+my $zipFile = "$file.zip";
</ins><span class="cx"> my $webkitLibrariesDir = $ENV{'WEBKIT_LIBRARIES'} || File::Spec->catdir($sourceDir, "WebKitLibraries", "win");
</span><span class="cx"> my $tmpRelativeDir = File::Temp::tempdir("webkitlibsXXXXXXX", TMPDIR => 1, CLEANUP => 1);
</span><span class="cx"> my $tmpAbsDir = File::Spec->rel2abs($tmpRelativeDir);
</span><span class="cx"> my $ua = LWP::UserAgent->new();
</span><span class="cx"> $ua->env_proxy;
</span><span class="cx">
</span><del>-print "Checking Last-Modified date of $zipFile...\n";
</del><ins>+print "Checking for newer version of $zipFile...\n";
</ins><span class="cx">
</span><del>-my $response = $ua->get($libsURL);
</del><ins>+# Ideally we could just use a previous modification time and/or ETag to do a single conditional request for the file,
+# however there are some problems with this approach. Some servers may not support conditional requests (Dropbox and
+# GitHub don't currently support conditional requests using If-Modified-Since headers plus they also don't emit
+# Last-Modified headers either). If mirrors are being used, some servers may have different ETags for the same file.
+# Some servers may not implement conditional requests properly. Etc...
+#
+# Instead we will assume that we need to download a new version of the file unless we can be reasonably certain that we
+# already previously got an up to date copy of the file. We can do this by making a quick, small request to check for
+# the presence of Last-Modified and/or ETag headers (or alternatively a separate *.headers file that contains a
+# Last-Modified header) and see if they match values that we may have gotten previously.
</ins><span class="cx">
</span><del>-unless ($response->is_success) {
- print "Could not access $libsURL:\n" . $response->headers_as_string . "\n";
- print "You may not be connected to the internet. Attempting to build without updating.\n";
- exit 0;
-}
</del><ins>+# It would be nice to be able to just use a HEAD request for this initial check but developer.apple.com returns 401
+# errors for those requests. Instead we can just set a size limit for a GET request (which we can also set the range for
+# to request just the first byte) so that we don't have to retrieve the entire file.
+$ua->max_size(0);
+my $response = $ua->get($libsURL, "Range", "bytes=0-0");
+$ua->max_size(undef);
</ins><span class="cx">
</span><del>-my $content_type = $response->header('Content-Type');
-my $document_length = $response->header('Content-Length');
-my $modified_time = str2time($response->header('Last-Modified'));
</del><ins>+if (! $response->is_success) {
+ print STDERR "Could not access $libsURL:\n", $response->headers_as_string, "\n";
+ print STDERR "Please ensure that $libsURL is reachable";
+ if ($libsURL =~ /^https/i) {
+ print STDERR " and that Perl can use LWP::Simple to connect to HTTPS URLs.\n";
+ print STDERR "You may have to run \"\$ cpan LWP::Protocol::https\"";
+ }
+ print STDERR ".\n";
</ins><span class="cx">
</span><del>-if (defined $modified_time) {
- print STDERR "Located a file of type $content_type, of size $document_length.\n";
- open NEW, ">", File::Spec->catfile($tmpAbsDir, "$file.headers");
- print NEW "Last-Modified: " . time2str($modified_time) . "\n";
- close NEW;
-} else {
- #Note: Neither GitHub nor DropBox emit the Last-Modified HTTP header, so fall back to a file
- #containing the necessary information if we do not receive the information in our initial query.
- my $headerURL = $libsURL;
- $headerURL =~ s/\.zip$/\.headers/;
</del><ins>+ if (-f File::Spec->catfile($webkitLibrariesDir, "$file.headers")) {
+ print STDERR "Falling back to existing version of $file.\n";
+ exit 0;
+ } else {
+ print STDERR "No existing version of $file to fall back to.\n";
+ exit 1;
+ }
+}
</ins><span class="cx">
</span><del>- my $result = getstore($headerURL, File::Spec->catfile($tmpAbsDir, "$file.headers"));
</del><ins>+my $contentType = $response->header('Content-Type');
+# Try to determine the file size based on the Content-Range or Content-Length headers. Normally we will need to use the
+# Content-Range header since we are just requesting a range but if the server doesn't support ranges then we will try
+# using the Content-Length header instead. Also note that neither header is affected by using max_size() to limit the
+# response size and the Content-Length header also shouldn't be affected from the use of HTTP compression since LWP
+# doesn't use it by default.
+my $contentLength = $response->header('Content-Length');
+# If the Content-Range header is defined and has a number after the slash, then that's the file size we want.
+if (defined $response->header('Content-Range') && $response->header('Content-Range') =~ /^.+\/(\d+)/) {
+ $contentLength=$1;
+}
+my $lastModified = $response->header('Last-Modified');
+my $etag = $response->header('ETag');
</ins><span class="cx">
</span><del>- if (!is_success($result)) {
- print STDERR "Couldn't check Last-Modified date of new $zipFile.\n";
- print STDERR "Response was: $result.\n";
- print STDERR "Please ensure that Perl can use LWP::Simple to connect to HTTPS urls, and that $libsURL is reachable.\n";
- print STDERR "You may have to run \$ cpan LWP::Protocol::https\n";
</del><ins>+print "Located a file";
+print " of type $contentType" if defined $contentType;
+print " of size $contentLength" if defined $contentLength;
+print ".\n";
</ins><span class="cx">
</span><del>- if (! -f File::Spec->catfile($webkitLibrariesDir, "$file.headers")) {
- print STDERR "Unable to check Last-Modified date and no version of $file to fall back to.\n";
- exit 1;
- }
</del><ins>+# Get any old headers that are available.
+my $oldLastModified;
+my $oldETag;
+if (open OLDHEADERSFILE, "<", File::Spec->catfile($webkitLibrariesDir, "$file.headers")) {
+ local $/ = undef;
+ my $oldHeaders = <OLDHEADERSFILE>;
+ close OLDHEADERSFILE;
</ins><span class="cx">
</span><del>- print STDERR "Falling back to existing version of $file.\n";
- exit 0;
- }
</del><ins>+ ($oldLastModified) = $oldHeaders =~ /^Last-Modified: (.+)$/mi;
+ ($oldETag) = $oldHeaders =~ /^ETag: (.+)$/mi;
</ins><span class="cx"> }
</span><span class="cx">
</span><del>-if (open NEW, File::Spec->catfile($tmpAbsDir, "$file.headers")) {
- my $new = lastModifiedToUnixTime(<NEW>);
- close NEW;
</del><ins>+# If we have matching old and new ETags, then that is a very good indication that we already had gotten an up to date
+# copy of the file previously. On the other hand if we have ETags that don't match, that doesn't necessarily indicate
+# that the files are different since different servers may compute different ETags for the same file. If they don't
+# match we will continue to see if we can skip downloading the file via other tests.
+if (defined $etag && defined $oldETag && $etag eq $oldETag) {
+ print "Current $file is up to date.\n";
+ exit 0;
+}
</ins><span class="cx">
</span><del>- if (defined $new && open OLD, File::Spec->catfile($webkitLibrariesDir, "$file.headers")) {
- my $old = lastModifiedToUnixTime(<OLD>);
- close OLD;
- if (defined $old && abs($new - $old) < $newnessThreshold) {
- print "Current $file is up to date\n";
- exit 0;
</del><ins>+# If on the initial request we didn't get a Last-Modified header, then we will try getting the Last-Modified header from
+# a separate *.headers file that may have been put on the server.
+if (! defined $lastModified) {
+ my $headerURL = $libsURL;
+ $headerURL =~ s/\.zip$/\.headers/;
+
+ $response = $ua->get($headerURL);
+
+ if (! $response->is_success) {
+ print STDERR "Could not access $headerURL:\n", $response->headers_as_string, "\n";
+ print STDERR "Please ensure that $headerURL is reachable";
+ if ($headerURL =~ /^https/i) {
+ print STDERR " and that Perl can use LWP::Simple to connect to HTTPS URLs.\n";
+ print STDERR "You may have to run \"\$ cpan LWP::Protocol::https\"";
</ins><span class="cx"> }
</span><ins>+ print STDERR ".\n";
</ins><span class="cx"> }
</span><ins>+
+ ($lastModified) = $response->content =~ /^Last-Modified: (.+)$/mi;
</ins><span class="cx"> }
</span><span class="cx">
</span><ins>+my $lastModifiedTime = str2time($lastModified);
+my $oldLastModifiedTime = str2time($oldLastModified);
+if (defined $lastModifiedTime && defined $oldLastModifiedTime
+ && abs($lastModifiedTime-$oldLastModifiedTime) < $newnessThreshold) {
+ print "Current $file is up to date.\n";
+ exit 0;
+}
+
</ins><span class="cx"> print "Downloading $zipFile...\n\n";
</span><span class="cx"> print "$libsURL\n";
</span><span class="cx"> my $result = getstore($libsURL, File::Spec->catfile($tmpAbsDir, $zipFile));
</span><span class="cx"> die "Couldn't download $zipFile!" if is_error($result);
</span><span class="cx">
</span><span class="cx"> my $zip = Archive::Zip->new(File::Spec->catfile($tmpAbsDir, $zipFile));
</span><ins>+
+# Make sure the zip file contains a directory with the same name as the zip file (minus the extension) and a prefix
+# directory if applicable.
+my $prefixDirectoryPathInZipFile = "$file/".(($prefixInZip eq ".") ? "" : "$prefixInZip/");
+if (! $zip->memberNamed($prefixDirectoryPathInZipFile)) {
+ print STDERR "Couldn't find $prefixDirectoryPathInZipFile directory in zip file.\n";
+
+ if (-f File::Spec->catfile($webkitLibrariesDir, "$file.headers")) {
+ print STDERR "Falling back to existing version of $file.\n";
+ exit 0;
+ } else {
+ print STDERR "No existing version of $file to fall back to.\n";
+ exit 1;
+ }
+}
+
</ins><span class="cx"> $result = $zip->extractTree("", $tmpAbsDir);
</span><span class="cx"> die "Couldn't unzip $zipFile." if $result != AZ_OK;
</span><span class="cx">
</span><span class="lines">@@ -161,24 +227,20 @@
</span><span class="cx">
</span><span class="cx"> File::Find::find(\&wanted, File::Spec->catfile($tmpAbsDir, $file));
</span><span class="cx">
</span><del>-$result = move(File::Spec->catfile($tmpAbsDir, "$file.headers"), $webkitLibrariesDir);
-print STDERR "Couldn't move $file.headers to $webkitLibrariesDir" . ".\n" if $result == 0;
</del><ins>+if (open HEADERSFILE, ">", File::Spec->catfile($webkitLibrariesDir, "$file.headers")) {
+ print HEADERSFILE "Last-Modified: $lastModified\n" if defined $lastModified;
+ print HEADERSFILE "ETag: $etag\n" if defined $etag;
+ close HEADERSFILE;
+} else {
+ print STDERR "Couldn't write $file.headers to $webkitLibrariesDir.\n"
+}
</ins><span class="cx">
</span><span class="cx"> print "The $file has been sucessfully installed in\n $webkitLibrariesDir\n";
</span><span class="cx"> exit;
</span><span class="cx">
</span><del>-sub lastModifiedToUnixTime($)
-{
- my ($str) = @_;
-
- $str =~ /^Last-Modified: (.*)$/ or return;
- return str2time($1);
-}
-
</del><span class="cx"> sub getLibraryName($)
</span><span class="cx"> {
</span><span class="cx"> my $url = shift;
</span><span class="cx"> $url =~ m#/([^/]+)\.zip$#;
</span><span class="cx"> return $1;
</span><span class="cx"> }
</span><del>-
</del></span></pre></div>
<a id="trunkToolsScriptsupdatewebkitwincairolibs"></a>
<div class="modfile"><h4>Modified: trunk/Tools/Scripts/update-webkit-wincairo-libs (198637 => 198638)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Tools/Scripts/update-webkit-wincairo-libs 2016-03-24 18:42:04 UTC (rev 198637)
+++ trunk/Tools/Scripts/update-webkit-wincairo-libs 2016-03-24 18:42:57 UTC (rev 198638)
</span><span class="lines">@@ -8,13 +8,13 @@
</span><span class="cx"> # are met:
</span><span class="cx"> #
</span><span class="cx"> # 1. Redistributions of source code must retain the above copyright
</span><del>-# notice, this list of conditions and the following disclaimer.
</del><ins>+# notice, this list of conditions and the following disclaimer.
</ins><span class="cx"> # 2. Redistributions in binary form must reproduce the above copyright
</span><span class="cx"> # notice, this list of conditions and the following disclaimer in the
</span><del>-# documentation and/or other materials provided with the distribution.
</del><ins>+# documentation and/or other materials provided with the distribution.
</ins><span class="cx"> # 3. Neither the name of Apple Inc. ("Apple") nor the names of
</span><span class="cx"> # its contributors may be used to endorse or promote products derived
</span><del>-# from this software without specific prior written permission.
</del><ins>+# from this software without specific prior written permission.
</ins><span class="cx"> #
</span><span class="cx"> # THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
</span><span class="cx"> # EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
</span><span class="lines">@@ -27,7 +27,7 @@
</span><span class="cx"> # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
</span><span class="cx"> # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
</span><span class="cx">
</span><del>-# Updates a development environment to the new WebKitAuxiliaryLibrary
</del><ins>+# Updates a development environment to the new WinCairoRequirements.
</ins><span class="cx">
</span><span class="cx"> use strict;
</span><span class="cx"> use warnings;
</span></span></pre>
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