From: Eric Wong <e@80x24.org>
To: meta@public-inbox.org
Subject: [PATCH 13/36] lei_to_mail: support Maildir, fix+test --augment
Date: Thu, 31 Dec 2020 13:51:31 +0000 [thread overview]
Message-ID: <20201231135154.6070-14-e@80x24.org> (raw)
In-Reply-To: <20201231135154.6070-1-e@80x24.org>
Maildir should be plenty fine for short-lived output folders.
---
lib/PublicInbox/LeiDedupe.pm | 6 +-
lib/PublicInbox/LeiToMail.pm | 133 +++++++++++++++++++++++++++--------
t/lei_to_mail.t | 97 +++++++++++++++++++++++--
t/mbox_reader.t | 3 +-
4 files changed, 199 insertions(+), 40 deletions(-)
diff --git a/lib/PublicInbox/LeiDedupe.pm b/lib/PublicInbox/LeiDedupe.pm
index c6eb7196..34d8bc27 100644
--- a/lib/PublicInbox/LeiDedupe.pm
+++ b/lib/PublicInbox/LeiDedupe.pm
@@ -67,8 +67,12 @@ sub dedupe_content () {
sub dedupe_none () { (undef, sub { 1 }) }
sub new {
- my ($cls, $lei) = @_;
+ my ($cls, $lei, $dst) = @_;
my $dd = $lei->{opt}->{dedupe} // 'content';
+
+ # allow "none" to bypass Eml->new if writing to directory:
+ return if ($dd eq 'none' && substr($dst // '', -1) eq '/');
+
my $dd_new = $cls->can("dedupe_$dd") //
die "unsupported dedupe strategy: $dd\n";
bless [ $dd_new->() ], $cls; # [ $skv, $cb ]
diff --git a/lib/PublicInbox/LeiToMail.pm b/lib/PublicInbox/LeiToMail.pm
index 4476d84c..0b2685b0 100644
--- a/lib/PublicInbox/LeiToMail.pm
+++ b/lib/PublicInbox/LeiToMail.pm
@@ -12,7 +12,8 @@ use PublicInbox::Spawn qw(which spawn popen_rd);
use PublicInbox::LeiDedupe;
use Symbol qw(gensym);
use IO::Handle; # ->autoflush
-use Fcntl qw(SEEK_SET SEEK_END);
+use Fcntl qw(SEEK_SET SEEK_END O_CREAT O_EXCL O_WRONLY);
+use Errno qw(EEXIST ESPIPE);
my %kw2char = ( # Maildir characters
draft => 'D',
@@ -52,14 +53,15 @@ sub _mbox_hdr_buf ($$$) {
$buf;
}
-sub write_in_full ($$$) {
- my ($fh, $buf, $atomic) = @_;
- if ($atomic) {
- defined(my $w = syswrite($fh, $$buf)) or die "write: $!";
- $w == length($$buf) or die "short write: $w != ".length($$buf);
- } else {
- print $fh $$buf or die "print: $!";
- }
+sub atomic_append { # for on-disk destinations (O_APPEND, or O_EXCL)
+ my ($fh, $buf) = @_;
+ defined(my $w = syswrite($fh, $$buf)) or die "write: $!";
+ $w == length($$buf) or die "short write: $w != ".length($$buf);
+}
+
+sub _print_full {
+ my ($fh, $buf) = @_;
+ print $fh $$buf or die "print: $!";
}
sub eml2mboxrd ($;$) {
@@ -117,18 +119,6 @@ sub eml2mboxcl2 {
$buf;
}
-sub mkmaildir ($) {
- my ($maildir) = @_;
- for (qw(new tmp cur)) {
- my $d = "$maildir/$_";
- next if -d $d;
- require File::Path;
- if (!File::Path::mkpath($d) && !-d $d) {
- die "failed to mkpath($d): $!\n";
- }
- }
-}
-
sub git_to_mail { # git->cat_async callback
my ($bref, $oid, $type, $size, $arg) = @_;
if ($type ne 'blob') {
@@ -229,7 +219,7 @@ sub dup_src ($) {
sub _augment { # MboxReader eml_cb
my ($eml, $lei) = @_;
# ignore return value, just populate the skv
- $lei->{dedupe_cb}->is_dup($eml);
+ $lei->{dedupe}->is_dup($eml);
}
sub _mbox_write_cb ($$$$) {
@@ -244,36 +234,115 @@ sub _mbox_write_cb ($$$$) {
open $out, '+>>', $dst or die "open $dst: $!";
# Perl does SEEK_END even with O_APPEND :<
$seekable = seek($out, 0, SEEK_SET);
- die "seek $dst: $!\n" if !$seekable && !$!{ESPIPE};
+ die "seek $dst: $!\n" if !$seekable && $! != ESPIPE;
}
my $jobs = $lei->{opt}->{jobs} // 0;
- my $atomic = $jobs > 1;
- my $dedupe = $lei->{dedupe} = PublicInbox::LeiDedupe->new($lei);
state $zsfx_allow = join('|', keys %zsfx2cmd);
my ($zsfx) = ($dst =~ /\.($zsfx_allow)\z/);
+ my $write = $jobs > 1 && !$zsfx ? \&atomic_append : \&_print_full;
+ my $dedupe = $lei->{dedupe} = PublicInbox::LeiDedupe->new($lei);
if ($lei->{opt}->{augment}) {
- if ($seekable && -s $out && $dedupe->prepare_dedupe) {
+ die "cannot augment $dst, not seekable\n" if !$seekable;
+ if (-s $out && $dedupe->prepare_dedupe) {
my $rd = $zsfx ? decompress_src($out, $zsfx, $lei) :
dup_src($out);
PublicInbox::MboxReader->$mbox($rd, \&_augment, $lei);
- } elsif ($seekable && !$atomic) {
- seek($out, 0, SEEK_END) or die "seek: $!";
}
+ # maybe some systems don't honor O_APPEND, Perl does this:
+ seek($out, 0, SEEK_END) or die "seek $dst: $!";
$dedupe->pause_dedupe if $jobs; # are we forking?
} elsif ($seekable) {
truncate($out, 0) or die "truncate $dst: $!";
}
$dedupe->prepare_dedupe if !$jobs;
($out, $pipe_lk) = compress_dst($out, $zsfx, $lei) if $zsfx;
- sub {
+ sub { # for git_to_mail
my ($buf, $oid, $kw) = @_;
my $eml = PublicInbox::Eml->new($buf);
- if (!$lei->{dedupe}->is_dup($eml, $oid)) {
+ if (!$dedupe->is_dup($eml, $oid)) {
$buf = $eml2mbox->($eml, $kw);
my $lock = $pipe_lk->lock_for_scope if $pipe_lk;
- write_in_full($out, $buf, $atomic);
+ $write->($out, $buf);
+ }
+ }
+}
+
+sub _maildir_each_file ($$;@) {
+ my ($dir, $cb, @arg) = @_;
+ for my $d (qw(new/ cur/)) {
+ my $pfx = $dir.$d;
+ opendir my $dh, $pfx or next;
+ while (defined(my $fn = readdir($dh))) {
+ $cb->($pfx.$fn, @arg) if $fn =~ /:2,[A-Za-z]*\z/;
+ }
+ }
+}
+
+sub _augment_file { # _maildir_each_file cb
+ my ($f, $lei) = @_;
+ my $eml = PublicInbox::InboxWritable::eml_from_path($f) or return;
+ _augment($eml, $lei);
+}
+
+# _maildir_each_file callback, \&CORE::unlink doesn't work with it
+sub _unlink { unlink($_[0]) }
+
+sub _buf2maildir {
+ my ($dst, $buf, $oid, $kw) = @_;
+ my $sfx = join('', sort(map { $kw2char{$_} // () } @$kw));
+ my $rand = ''; # chosen by die roll :P
+ my ($tmp, $fh, $final);
+ do {
+ $tmp = $dst.'tmp/'.$rand."oid=$oid";
+ } while (!sysopen($fh, $tmp, O_CREAT|O_EXCL|O_WRONLY) &&
+ $! == EEXIST && ($rand = int(rand 0x7fffffff).','));
+ if (print $fh $$buf and close($fh)) {
+ $dst .= $sfx eq '' ? 'new/' : 'cur/';
+ $rand = '';
+ do {
+ $final = $dst.$rand."oid=$oid:2,$sfx";
+ } while (!link($tmp, $final) && $! == EEXIST &&
+ ($rand = int(rand 0x7fffffff).','));
+ unlink($tmp) or warn "W: failed to unlink $tmp: $!\n";
+ } else {
+ my $err = $!;
+ unlink($tmp);
+ die "Error writing $oid to $dst: $err";
+ }
+}
+
+
+sub _maildir_write_cb ($$) {
+ my ($dst, $lei) = @_;
+ $dst .= '/' unless substr($dst, -1) eq '/';
+ my $dedupe = $lei->{dedupe} = PublicInbox::LeiDedupe->new($lei, $dst);
+ my $jobs = $lei->{opt}->{jobs} // 0;
+ if ($lei->{opt}->{augment}) {
+ if ($dedupe && $dedupe->prepare_dedupe) {
+ require PublicInbox::InboxWritable; # eml_from_path
+ _maildir_each_file($dst, \&_augment_file, $lei);
+ $dedupe->pause_dedupe if $jobs; # are we forking?
+ }
+ } else { # clobber existing Maildir
+ _maildir_each_file($dst, \&_unlink);
+ }
+ for my $x (qw(tmp new cur)) {
+ my $d = $dst.$x;
+ next if -d $d;
+ require File::Path;
+ if (!File::Path::mkpath($d) && !-d $d) {
+ die "failed to mkpath($d): $!\n";
}
}
+ $dedupe->prepare_dedupe if $dedupe && !$jobs;
+ sub { # for git_to_mail
+ my ($buf, $oid, $kw) = @_;
+ return _buf2maildir($dst, $buf, $oid, $kw) if !$dedupe;
+ my $eml = PublicInbox::Eml->new($$buf); # copy buf
+ return if $dedupe->is_dup($eml, $oid);
+ undef $eml;
+ _buf2maildir($dst, $buf, $oid, $kw);
+ }
}
sub write_cb { # returns a callback for git_to_mail
@@ -281,6 +350,8 @@ sub write_cb { # returns a callback for git_to_mail
require PublicInbox::LeiDedupe;
if ($dst =~ s!\A(mbox(?:rd|cl|cl2|o))?:!!) {
_mbox_write_cb($cls, $1, $dst, $lei);
+ } elsif ($dst =~ s!\A[Mm]aildir:!!) { # typically capitalized
+ _maildir_write_cb($dst, $lei);
}
# TODO: Maildir, MH, IMAP, JMAP ...
}
diff --git a/t/lei_to_mail.t b/t/lei_to_mail.t
index f3cc71ad..bd864754 100644
--- a/t/lei_to_mail.t
+++ b/t/lei_to_mail.t
@@ -7,14 +7,18 @@ use Test::More;
use PublicInbox::TestCommon;
use PublicInbox::Eml;
use Fcntl qw(SEEK_SET);
+use PublicInbox::Spawn qw(popen_rd which);
+use List::Util qw(shuffle);
require_mods(qw(DBD::SQLite));
+require PublicInbox::MboxReader;
use_ok 'PublicInbox::LeiToMail';
my $from = "Content-Length: 10\nSubject: x\n\nFrom hell\n";
my $noeol = "Subject: x\n\nFrom hell";
my $crlf = $noeol;
$crlf =~ s/\n/\r\n/g;
my $kw = [qw(seen answered flagged)];
-for my $mbox (qw(mboxrd mboxo mboxcl mboxcl2)) {
+my @MBOX = qw(mboxcl2 mboxrd mboxcl mboxo);
+for my $mbox (@MBOX) {
my $m = "eml2$mbox";
my $cb = PublicInbox::LeiToMail->can($m);
my $s = $cb->(PublicInbox::Eml->new($from), $kw);
@@ -75,8 +79,9 @@ Subject: x
blah
EOM
my $fn = "$tmpdir/x.mbox";
+my ($mbox) = shuffle(@MBOX); # pick one, shouldn't matter
my $orig = do {
- my $wcb = PublicInbox::LeiToMail->write_cb("mboxcl2:$fn", $lei);
+ my $wcb = PublicInbox::LeiToMail->write_cb("$mbox:$fn", $lei);
is(ref $wcb, 'CODE', 'write_cb returned callback');
ok(-f $fn && !-s _, 'empty file created');
$wcb->(\(my $dup = $buf), 'deadbeef', [ qw(seen) ]);
@@ -87,7 +92,8 @@ my $orig = do {
unlink $fn or BAIL_OUT $!;
local $lei->{opt} = { jobs => 2 };
- $wcb = PublicInbox::LeiToMail->write_cb("mboxcl2:$fn", $lei);
+ $wcb = PublicInbox::LeiToMail->write_cb("$mbox:$fn", $lei);
+ ok(-f $fn && !-s _, 'truncated mbox destination');
$lei->{dedupe}->prepare_dedupe;
$wcb->(\($dup = $buf), 'deadbeef', [ qw(seen) ]);
undef $wcb;
@@ -103,7 +109,7 @@ for my $zsfx (qw(gz bz2 xz)) { # XXX should we support zst, zz, lzo, lzma?
my $dc_cmd = eval { $zsfx2cmd->($zsfx, 1, $lei) };
ok($dc_cmd, "decompressor for .$zsfx");
my $f = "$fn.$zsfx";
- my $dst = "mboxcl2:$f";
+ my $dst = "$mbox:$f";
my $wcb = PublicInbox::LeiToMail->write_cb($dst, $lei);
$wcb->(\(my $dup = $buf), 'deadbeef', [ qw(seen) ]);
undef $wcb;
@@ -117,11 +123,37 @@ for my $zsfx (qw(gz bz2 xz)) { # XXX should we support zst, zz, lzo, lzma?
$wcb->(\($dup = $buf), 'deadbeef', [ qw(seen) ]);
undef $wcb;
is(xqx([@$dc_cmd, $f]), $orig, "$zsfx matches with lock");
+
+ local $lei->{opt} = { augment => 1 };
+ $wcb = PublicInbox::LeiToMail->write_cb($dst, $lei);
+ $lei->{dedupe}->prepare_dedupe;
+ $wcb->(\($dup = $buf . "\nx\n"), 'deadbeef', [ qw(seen) ]);
+ undef $wcb; # commit
+
+ my $cat = popen_rd([@$dc_cmd, $f]);
+ my @raw;
+ PublicInbox::MboxReader->$mbox($cat,
+ sub { push @raw, shift->as_string });
+ like($raw[1], qr/\nblah\n\nx\n\z/s, "augmented $zsfx");
+ like($raw[0], qr/\nblah\n\z/s, "original preserved $zsfx");
+
+ local $lei->{opt} = { augment => 1, jobs => 2 };
+ $wcb = PublicInbox::LeiToMail->write_cb($dst, $lei);
+ $lei->{dedupe}->prepare_dedupe;
+ $wcb->(\($dup = $buf . "\ny\n"), 'deadbeef', [ qw(seen) ]);
+ undef $wcb; # commit
+
+ my @raw3;
+ $cat = popen_rd([@$dc_cmd, $f]);
+ PublicInbox::MboxReader->$mbox($cat,
+ sub { push @raw3, shift->as_string });
+ my $y = pop @raw3;
+ is_deeply(\@raw3, \@raw, 'previous messages preserved');
+ like($y, qr/\nblah\n\ny\n\z/s, "augmented $zsfx (atomic)");
}
}
unlink $fn or BAIL_OUT $!;
-require PublicInbox::MboxReader;
if ('default deduplication uses content_hash') {
my $wcb = PublicInbox::LeiToMail->write_cb("mboxo:$fn", $lei);
$wcb->(\(my $x = $buf), 'deadbeef', []) for (1..2);
@@ -130,6 +162,17 @@ if ('default deduplication uses content_hash') {
open my $fh, '<', $fn or BAIL_OUT $!;
PublicInbox::MboxReader->mboxo($fh, sub { $cmp .= shift->as_string });
is($cmp, $buf, 'only one message written');
+
+ local $lei->{opt} = { augment => 1 };
+ $wcb = PublicInbox::LeiToMail->write_cb("mboxo:$fn", $lei);
+ $wcb->(\($x = $buf . "\nx\n"), 'deadbeef', []) for (1..2);
+ undef $wcb; # undef to commit changes
+ open $fh, '<', $fn or BAIL_OUT $!;
+ my @x;
+ PublicInbox::MboxReader->mboxo($fh, sub { push @x, shift->as_string });
+ is(scalar(@x), 2, 'augmented mboxo');
+ is($x[0], $cmp, 'original message preserved');
+ is($x[1], $buf . "\nx\n", 'new message appended');
}
{ # stdout support
@@ -145,7 +188,6 @@ if ('default deduplication uses content_hash') {
}
SKIP: { # FIFO support
- use PublicInbox::Spawn qw(popen_rd which);
use POSIX qw(mkfifo);
my $fn = "$tmpdir/fifo";
mkfifo($fn, 0600) or skip("mkfifo not supported: $!", 1);
@@ -158,4 +200,47 @@ SKIP: { # FIFO support
is($cmp, $buf, 'message written to FIFO');
}
+{ # Maildir support
+ my $md = "$tmpdir/maildir/";
+ my $wcb = PublicInbox::LeiToMail->write_cb("Maildir:$md", $lei);
+ ok($wcb, 'got Maildir callback');
+ $lei->{dedupe}->prepare_dedupe;
+ $wcb->(\(my $x = $buf), 'badc0ffee', []);
+ undef $wcb; # commit
+
+ my @f;
+ PublicInbox::LeiToMail::_maildir_each_file($md, sub { push @f, shift });
+ is(scalar(@f), 1, 'wrote one file');
+ open my $fh, $f[0] or BAIL_OUT $!;
+ is(do { local $/; <$fh> }, $buf, 'wrote to Maildir');
+
+ $wcb = PublicInbox::LeiToMail->write_cb("maildir:$md", $lei);
+ $lei->{dedupe}->prepare_dedupe;
+ $wcb->(\($x = $buf."\nx\n"), 'deadcafe', []);
+ undef $wcb; # commit
+
+ my @x = ();
+ PublicInbox::LeiToMail::_maildir_each_file($md, sub { push @x, shift });
+ is(scalar(@x), 1, 'wrote one new file');
+ ok(!-f $f[0], 'old file clobbered');
+ open $fh, $x[0] or BAIL_OUT $!;
+ is(do { local $/; <$fh> }, $buf."\nx\n", 'wrote new file to Maildir');
+
+ local $lei->{opt}->{augment} = 1;
+ $wcb = PublicInbox::LeiToMail->write_cb("maildir:$md", $lei);
+ $lei->{dedupe}->prepare_dedupe;
+ $wcb->(\($x = $buf."\ny\n"), 'deadcafe', []);
+ $wcb->(\($x = $buf."\ny\n"), 'b4dc0ffee', []); # skipped by dedupe
+ undef $wcb; # commit
+ @f = ();
+ PublicInbox::LeiToMail::_maildir_each_file($md, sub { push @f, shift });
+ is(scalar grep(/\A\Q$x[0]\E\z/, @f), 1, 'old file still there');
+ my @new = grep(!/\A\Q$x[0]\E\z/, @f);
+ is(scalar @new, 1, '1 new file written (b4dc0ffee skipped)');
+ open $fh, $x[0] or BAIL_OUT $!;
+ is(do { local $/; <$fh> }, $buf."\nx\n", 'old file untouched');
+ open $fh, $new[0] or BAIL_OUT $!;
+ is(do { local $/; <$fh> }, $buf."\ny\n", 'new file written');
+}
+
done_testing;
diff --git a/t/mbox_reader.t b/t/mbox_reader.t
index 9391dc24..7d5a6ba5 100644
--- a/t/mbox_reader.t
+++ b/t/mbox_reader.t
@@ -32,7 +32,6 @@ if ($ENV{TEST_EXTRA}) {
}
my $reader = PublicInbox::MboxReader->new;
-my $write_in_full = PublicInbox::LeiToMail->can('write_in_full');
my $check_fmt = sub {
my $fmt = shift;
my @order = shuffle(keys %raw);
@@ -41,7 +40,7 @@ my $check_fmt = sub {
for my $k (@order) {
my $eml = PublicInbox::Eml->new($raw{$k});
my $buf = $eml2mbox->($eml);
- $write_in_full->($fh, $buf, undef);
+ print $fh $$buf or BAIL_OUT "print $!";
}
seek($fh, 0, SEEK_SET) or BAIL_OUT "seek: $!";
$reader->$fmt($fh, sub {
next prev parent reply other threads:[~2020-12-31 13:51 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-31 13:51 [PATCH 00/36] another round of lei stuff Eric Wong
2020-12-31 13:51 ` [PATCH 01/36] import: respect init.defaultBranch Eric Wong
2020-12-31 13:51 ` [PATCH 02/36] lei_store: use per-machine refname as git HEAD Eric Wong
2020-12-31 13:51 ` [PATCH 03/36] revert "lei_store: use per-machine refname as git HEAD" Eric Wong
2020-12-31 13:51 ` [PATCH 04/36] lei_to_mail: initial implementation for writing mbox formats Eric Wong
2020-12-31 13:51 ` [PATCH 05/36] sharedkv: fork()-friendly key-value store Eric Wong
2020-12-31 13:51 ` [PATCH 06/36] sharedkv: split out index_values Eric Wong
2020-12-31 13:51 ` [PATCH 07/36] lei_to_mail: start atomic and compressed mbox writing Eric Wong
2020-12-31 13:51 ` [PATCH 08/36] mboxreader: new class for reading various mbox formats Eric Wong
2020-12-31 13:51 ` [PATCH 09/36] lei_to_mail: start --augment, dedupe, bz2 and xz Eric Wong
2020-12-31 13:51 ` [PATCH 10/36] lei: implement various deduplication strategies Eric Wong
2020-12-31 13:51 ` [PATCH 11/36] lei_to_mail: lazy-require LeiDedupe Eric Wong
2020-12-31 13:51 ` [PATCH 12/36] lei_to_mail: support for non-seekable outputs Eric Wong
2020-12-31 13:51 ` Eric Wong [this message]
2020-12-31 13:51 ` [PATCH 14/36] ipc: generic IPC dispatch based on Storable Eric Wong
2020-12-31 13:51 ` [PATCH 15/36] ipc: support Sereal Eric Wong
2020-12-31 13:51 ` [PATCH 16/36] lei_store: add ->set_eml, ->add_eml can return smsg Eric Wong
2020-12-31 13:51 ` [PATCH 17/36] lei: rename "extinbox" => "external" Eric Wong
2020-12-31 13:51 ` [PATCH 18/36] mid: use defined-or with `push' for uniqueness check Eric Wong
2020-12-31 13:51 ` [PATCH 19/36] mid: hoist out mids_in sub Eric Wong
2020-12-31 13:51 ` [PATCH 20/36] lei_store: handle messages without Message-ID at all Eric Wong
2020-12-31 13:51 ` [PATCH 21/36] ipc: use shutdown(2), base atfork* callback Eric Wong
2020-12-31 13:51 ` [PATCH 22/36] lei_to_mail: unlink mboxes if not augmenting Eric Wong
2020-12-31 13:51 ` [PATCH 23/36] lei: add --mfolder as an --output alias Eric Wong
2020-12-31 13:51 ` [PATCH 24/36] spawn: move run_die here from PublicInbox::Import Eric Wong
2020-12-31 13:51 ` [PATCH 25/36] init: remove embedded UnlinkMe package Eric Wong
2020-12-31 13:51 ` [PATCH 26/36] t/run: avoid uninitialized var on incomplete test Eric Wong
2020-12-31 13:51 ` [PATCH 27/36] gcf2client: reap process on DESTROY Eric Wong
2020-12-31 13:51 ` [PATCH 28/36] lei_to_mail: open FIFOs O_WRONLY so we block Eric Wong
2020-12-31 13:51 ` [PATCH 29/36] searchidxshard: call DS->Reset at worker start Eric Wong
2020-12-31 13:51 ` [PATCH 30/36] t/ipc.t: test for references via `die' Eric Wong
2020-12-31 13:51 ` [PATCH 31/36] use PublicInbox::DS for dwaitpid Eric Wong
2020-12-31 13:51 ` [PATCH 32/36] syscall: SFD_NONBLOCK can be a constant, again Eric Wong
2020-12-31 13:51 ` [PATCH 33/36] lei: avoid Spawn package when starting daemon Eric Wong
2020-12-31 13:51 ` [PATCH 34/36] avoid calling waitpid from children in DESTROY Eric Wong
2020-12-31 13:51 ` [PATCH 35/36] ds: clobber $in_loop first at reset Eric Wong
2020-12-31 13:51 ` [PATCH 36/36] on_destroy: support PID owner guard Eric Wong
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