resilient stack: takeover: display date of last backup.

parent 4e914795
...@@ -92,7 +92,7 @@ output = ${buildout:directory}/instance-frozen.cfg ...@@ -92,7 +92,7 @@ output = ${buildout:directory}/instance-frozen.cfg
[resilient-web-takeover-cgi-script-download] [resilient-web-takeover-cgi-script-download]
recipe = slapos.recipe.download recipe = slapos.recipe.download
url = ${:_profile_base_location_}/resilient-web-takeover-cgi-script.py.in url = ${:_profile_base_location_}/resilient-web-takeover-cgi-script.py.in
md5sum = e6262c5cf9b1c4d1ea4d959fdcbe3070 md5sum = 4e9599736dbbba9eb466cd0e4d78368d
mode = 0644 mode = 0644
destination = ${buildout:directory}/resilient-web-takeover-cgi-script.py.in destination = ${buildout:directory}/resilient-web-takeover-cgi-script.py.in
......
#!${buildout:executable} #!${buildout:executable}
equeue_database = '${equeue:database}'
import cgi import cgi
import cgitb import cgitb
import datetime
import gdbm
import os import os
import shutil
import subprocess import subprocess
import sys import sys
import tempfile
cgitb.enable() cgitb.enable()
def getLatestBackupDate():
"""
Get the date of the latest successful backup.
"""
# Create a copy of the db (locked by equeue process)
temporary_directory = tempfile.mkdtemp()
equeue_database_copy = os.path.join(temporary_directory, 'equeue.db')
shutil.copyfile(equeue_database, equeue_database_copy)
db = gdbm.open(equeue_database_copy)
# Usually, there is only one callback (so only one key
# in the db), but if there are several:
# Take the "oldest" one (oldest value).
last_backup = db[db.keys()[0]]
for callback in db.keys():
timestamp = float(db[callback])
if timestamp < last_backup:
last_backup = timestamp
return datetime.datetime.fromtimestamp(last_backup)
print "Content-Type: text/html" print "Content-Type: text/html"
print print
...@@ -17,12 +43,13 @@ if "password" not in form: ...@@ -17,12 +43,13 @@ if "password" not in form:
<p>Calling takeover will stop and freeze the current main instance, and make this clone instance the new main instance, replacing the old one.</p> <p>Calling takeover will stop and freeze the current main instance, and make this clone instance the new main instance, replacing the old one.</p>
<p><b>Warning: submit the form only if you understand what you are doing.</b></p> <p><b>Warning: submit the form only if you understand what you are doing.</b></p>
<p>Note: the password asked here can be found within the parameters of your SlapOS instance page.</p> <p>Note: the password asked here can be found within the parameters of your SlapOS instance page.</p>
<p>Last valid backup: %s</p>
<form action="/"> <form action="/">
Password: <input type="text" name="password"> Password: <input type="text" name="password">
<input type="submit" value="Take over" style="background: red;"> <input type="submit" value="Take over" style="background: red;">
</form> </form>
</body> </body>
</html>""" </html>""" % getLatestBackupDate().strftime('%Y-%m-%d %H:%M:%S')
sys.exit(0) sys.exit(0)
if form['password'].value != '${:password}': if form['password'].value != '${:password}':
......
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