dev-db/percona-toolkit: correctly compute slave lag for pt-slave-delay

Closes: https://github.com/gentoo/gentoo/pull/8580
Bug: https://jira.percona.com/browse/PT-1060
Package-Manager: Portage-2.3.38, Repoman-2.3.9

dev-db/percona-toolkit/files/percona-toolkit-3.0.10-slave-delay-fix.patch

@@ -0,0 +1,44 @@
+https://bugs.launchpad.net/percona-toolkit/+bug/962330
+https://bugs.launchpad.net/percona-toolkit/+bug/1095476
+
+diff --git a/bin/pt-slave-delay b/bin/pt-slave-delay
+index 750b733..fca04e4 100755
+--- a/bin/pt-slave-delay
++++ b/bin/pt-slave-delay
+@@ -4244,6 +4244,7 @@ sub main {
+    my ( $TS, $FILE, $POS ) = ( 0, 1, 2 );
+    my @positions;
+    my $next_start = 0;
++   my $initial_delay = 0;
+    $now    = time();
+    my $end = $now + ( $o->get('run-time') || 0 );    # When we should exit
+ 
+@@ -4258,6 +4259,10 @@ sub main {
+       die "Slave SQL thread is not running";
+    }
+ 
++   if (defined $status->{seconds_behind_master} and $status->{seconds_behind_master} > 0) {
++      $initial_delay = $status->{seconds_behind_master};
++   }
++
+    my $master_dbh;
+    if ( $master_dsn ) {
+       PTDEBUG && _d('Connecting to master via DSN from cmd-line');
+@@ -4383,7 +4388,7 @@ sub main {
+             || $pos->[$POS] != $res->{position} )
+          {
+             push @positions,
+-               [ $now, $res->{file}, $res->{position} ];
++               [ $now - ( $initial_delay || 0 ), $res->{file}, $res->{position} ];
+          }
+       }
+       else {
+@@ -4403,7 +4408,7 @@ sub main {
+                 # That happened because for an already lagged slave, $now
+                 # isn't the correct time, but is actually
+                 # $now - $seconds_lagged.
+-                 $now - ( $status->{seconds_behind_master} || 0 ),
++                 $now - ( $initial_delay || 0 ),
+                  $status->{master_log_file},
+                  $status->{read_master_log_pos}
+             ];

dev-db/percona-toolkit/percona-toolkit-3.0.10-r1.ebuild

@@ -0,0 +1,51 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI="6"
+
+inherit perl-module
+
+DESCRIPTION="Advanced command-line tools to perform a variety of MySQL and system tasks"
+HOMEPAGE="https://www.percona.com/software/mysql-tools/percona-toolkit"
+SRC_URI="https://www.percona.com/downloads/${PN}/${PV}/source/tarball/${P}.tar.gz"
+
+LICENSE="|| ( GPL-2 Artistic )"
+SLOT="0"
+KEYWORDS="~amd64 ~x86 ~amd64-linux ~x86-linux"
+# Package warrants IUSE doc
+IUSE=""
+
+COMMON_DEPEND="dev-perl/DBI
+	dev-perl/DBD-mysql
+	virtual/perl-Time-HiRes"
+RDEPEND="${COMMON_DEPEND}
+	dev-perl/JSON
+	dev-perl/libwww-perl
+	dev-perl/Role-Tiny
+	virtual/perl-File-Path
+	virtual/perl-Getopt-Long
+	virtual/perl-Time-Local
+	virtual/perl-Digest-MD5
+	virtual/perl-IO-Compress
+	virtual/perl-File-Temp
+	virtual/perl-File-Spec
+	virtual/perl-Scalar-List-Utils
+	dev-perl/TermReadKey"
+DEPEND="${COMMON_DEPEND}
+	virtual/perl-ExtUtils-MakeMaker"
+
+# Bug #501904 - CVE-2014-2029
+# sed -i -e '/^=item --\[no\]version-check/,/^default: yes/{/^default: yes/d}' bin/*
+# ^ is *-no-versioncheck.patch
+PATCHES=(
+	"${FILESDIR}"/${PN}-3.0.7-no-versioncheck.patch 
+	"${FILESDIR}"/${PN}-3.0.10-slave-delay-fix.patch
+)
+
+src_prepare() {
+	default
+
+	sed -i \
+		-e "s/=> 'percona-toolkit',/=> 'Percona::Toolkit',/g" \
+		Makefile.PL || die
+}