From c3ba2ecd4edc2627969a120ebf92a25a85f87995 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Mon, 8 Mar 2010 07:43:00 +0000
Subject: [PATCH] Produce a warning message if the timestamp of the portage
 tree is more than 30 days old, and make it adjustable via the
 PORTAGE_SYNC_STALE variable. Thanks to Ned Ludd <solar@g.o> for the most of
 this code.

svn path=/main/trunk/; revision=15756
---
 cnf/make.globals                       |  4 ++
 man/make.conf.5                        |  6 ++
 pym/_emerge/actions.py                 |  3 +
 pym/_emerge/sync/__init__.py           |  0
 pym/_emerge/sync/old_tree_timestamp.py | 99 ++++++++++++++++++++++++++
 5 files changed, 112 insertions(+)
 create mode 100644 pym/_emerge/sync/__init__.py
 create mode 100644 pym/_emerge/sync/old_tree_timestamp.py

diff --git a/cnf/make.globals b/cnf/make.globals
index 76b48fbf9..b1b2cf49c 100644
--- a/cnf/make.globals
+++ b/cnf/make.globals
@@ -83,6 +83,10 @@ PORTAGE_RSYNC_RETRIES="3"
 
 PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
 
+# The number of days after the last `emerge --sync` that a warning
+# message should be produced.
+PORTAGE_SYNC_STALE="30"
+
 # Minimal CONFIG_PROTECT
 CONFIG_PROTECT="/etc"
 CONFIG_PROTECT_MASK="/etc/env.d"
diff --git a/man/make.conf.5 b/man/make.conf.5
index 18d769f32..71a308139 100644
--- a/man/make.conf.5
+++ b/man/make.conf.5
@@ -643,6 +643,12 @@ giving up.
 .br
 Defaults to 3.
 .TP
+\fBPORTAGE_SYNC_STALE\fR = \fI[NUMBER]\fR
+Defines the number of days after the last `emerge \-\-sync` that a warning
+message should be produced.
+.br
+Defaults to 30.
+.TP
 \fBPORTAGE_TMPDIR\fR = \fI[path]\fR
 Defines the location of the temporary build directories.
 .br
diff --git a/pym/_emerge/actions.py b/pym/_emerge/actions.py
index 6cb690458..208685946 100644
--- a/pym/_emerge/actions.py
+++ b/pym/_emerge/actions.py
@@ -53,6 +53,7 @@ from _emerge.Scheduler import Scheduler
 from _emerge.search import search
 from _emerge.SetArg import SetArg
 from _emerge.show_invalid_depstring_notice import show_invalid_depstring_notice
+from _emerge.sync.old_tree_timestamp import old_tree_timestamp_warn
 from _emerge.unmerge import unmerge
 from _emerge.UnmergeDepPriority import UnmergeDepPriority
 from _emerge.UseFlagDisplay import UseFlagDisplay
@@ -64,6 +65,8 @@ if sys.hexversion >= 0x3000000:
 def action_build(settings, trees, mtimedb,
 	myopts, myaction, myfiles, spinner):
 
+	old_tree_timestamp_warn(settings['PORTDIR'], settings)
+
 	# validate the state of the resume data
 	# so that we can make assumptions later.
 	for k in ("resume", "resume_backup"):
diff --git a/pym/_emerge/sync/__init__.py b/pym/_emerge/sync/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/pym/_emerge/sync/old_tree_timestamp.py b/pym/_emerge/sync/old_tree_timestamp.py
new file mode 100644
index 000000000..f96274374
--- /dev/null
+++ b/pym/_emerge/sync/old_tree_timestamp.py
@@ -0,0 +1,99 @@
+# Copyright 2010 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+import locale
+import logging
+import time
+
+from portage import os
+from portage.exception import PortageException
+from portage.localization import _
+from portage.util import grabfile, writemsg_level, writemsg_stdout
+
+def have_english_locale():
+	lang, enc = locale.getdefaultlocale()
+	if lang is not None:
+		lang = lang.lower()
+		lang = lang.split('_', 1)[0]
+	return lang is None or lang in ('c', 'en')
+
+def whenago(seconds):
+	sec = int(seconds)
+	mins = 0
+	days = 0
+	hrs = 0
+	years = 0
+	out = []
+
+	if sec > 60:
+		mins = sec / 60
+		sec = sec % 60
+	if mins > 60:
+		hrs = mins / 60
+		mins = mins % 60
+	if hrs > 24:
+		days = hrs / 24
+		hrs = hrs % 24
+	if days > 365:
+		years = days / 365
+		days = days % 365
+
+	if years:
+		out.append(str(years)+"y ")
+	if days:
+		out.append(str(days)+"d ")
+	if hrs:
+		out.append(str(hrs)+"h ")
+	if mins:
+		out.append(str(mins)+"m ")
+	if sec:
+		out.append(str(sec)+"s ")
+
+	return "".join(out).strip()
+
+def old_tree_timestamp_warn(portdir, settings):
+	unixtime = time.time()
+	default_warnsync = 30
+
+	timestamp_file = os.path.join(portdir, "metadata/timestamp.x")
+	try:
+		lastsync = grabfile(timestamp_file)
+	except PortageException:
+		return False
+
+	if not lastsync:
+		return False
+
+	lastsync = lastsync[0].split()
+	if not lastsync:
+		return False
+
+	try:
+		lastsync = int(lastsync[0])
+	except ValueError:
+		return False
+
+	var_name = 'PORTAGE_SYNC_STALE'
+	try:
+		warnsync = float(settings.get(var_name, default_warnsync))
+	except ValueError:
+		writemsg_level("!!! %s contains non-numeric value: %s\n" % \
+			(var_name, settings[var_name]),
+			level=logging.ERROR, noiselevel=-1)
+		return False
+
+	if warnsync <= 0:
+		return False
+
+	if (unixtime - 86400 * warnsync) > lastsync:
+		if have_english_locale():
+			writemsg_stdout(">>> Last emerge sync was %s ago\n" % \
+				whenago(unixtime - lastsync), noiselevel=-1)
+		else:
+			writemsg_stdout(">>> %s\n" % \
+				_("Last emerge sync was %s") % \
+				time.strftime('%c', time.localtime(lastsync)),
+				noiselevel=-1)
+		return True
+	return False
-- 
2.26.2