From: Ralf Ertzinger <ralf@skytale.net>
Date: Fri, 21 Feb 2014 14:13:59 +0000 (+0100)
Subject: Add linux specific autosnapsmf module and dependencies
X-Git-Tag: 0.2.98.python3.1~28
X-Git-Url: https://git.camperquake.de/gitweb.cgi?p=time-slider.git;a=commitdiff_plain;h=bb5f597d37e6c9d9957f7eaf9b6310a3ec071651

Add linux specific autosnapsmf module and dependencies
---

diff --git a/usr/share/time-slider/lib/time_slider/linux/autosnapsmf.py b/usr/share/time-slider/lib/time_slider/linux/autosnapsmf.py
new file mode 100755
index 0000000..3152cf9
--- /dev/null
+++ b/usr/share/time-slider/lib/time_slider/linux/autosnapsmf.py
@@ -0,0 +1,129 @@
+#!/usr/bin/python2
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or http://www.opensolaris.org/os/licensing.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+
+import time_slider.autosnapsmf as base
+import smf
+from timesliderconfig import Config
+
+SNAPLABELPREFIX = base.SNAPLABELPREFIX
+
+def get_default_schedules():
+    """
+    Finds the default schedules that are enabled (online, offline or degraded)
+    """
+    #This is not the fastest method but it is the safest, we need
+    #to ensure that default schedules are processed in the pre-defined
+    #order to ensure that the overlap between them is adhered to
+    #correctly. monthly->weekly->daily->hourly->frequent. They have
+    #to be processed first and they HAVE to be in the correct order.
+    _defaultSchedules = []
+    for s in base.factoryDefaultSchedules:
+        instanceName = "%s:%s" % (base.BASESVC,s)
+        config = Config()
+        result = config.get(instanceName[5:], "state")
+        #
+        # Note that the schedules, being dependent on the time-slider service
+        # itself will typically be in an offline state when enabled. They will
+        # transition to an "online" state once time-slider itself comes
+        # "online" to satisfy it's dependency
+        if result == "online" or result == "offline" or result == "degraded":
+            instance = AutoSnap(s)
+            try:
+                _defaultSchedules.append(instance.get_schedule_details())
+            except RuntimeError, message:
+                raise RuntimeError, "Error getting schedule details for " + \
+                                    "default auto-snapshot SMF instance:" + \
+                                    "\n\t" + instanceName + "\nDetails:\n" + \
+                                    str(message)
+    return _defaultSchedules
+
+
+def get_custom_schedules():
+    """
+    Finds custom schedules ie. not the factory default
+    'monthly', 'weekly', 'hourly', 'daily' and 'frequent' schedules
+    """
+    _customSchedules = []
+    config = Config()
+    for section in config.sections():
+        if section.startswith(base.BASESVC[5:]):
+            frmi = section.rsplit(":", 1)
+            label = frmi[1]
+            state = config.get(section, "state")
+
+            if label not in base.factoryDefaultSchedules:
+            # Note that the schedules, being dependent on the time-slider service
+            # itself will typically be in an offline state when enabled. They will
+            # transition to an "online" state once time-slider itself comes
+            # "online" to satisfy it's dependency
+                if state == "online" or state == "offline" or state == "degraded":
+                    instance = AutoSnap(label)
+                    try:
+                        _customSchedules.append(instance.get_schedule_details())
+                    except RuntimeError, message:
+                        raise RuntimeError, "Error getting schedule details " + \
+                                            "for custom auto-snapshot SMF " + \
+                                            "instance:\n\t" + label + "\n" + \
+                                            "Details:\n" + str(message)
+    return _customSchedules
+
+class AutoSnap(base.AutoSnap):
+
+    def __init__(self, schedule):
+        base.AutoSnap.__init__(self, schedule)
+
+#
+# This is beyond ugly.
+#
+# The problem this is trying to solve is to change the inheritance chain. Origially
+# it looks like this:
+#
+# <class 'time_slider.linux.autosnapsmf.AutoSnap'>
+# <class 'time_slider.autosnapsmf.AutoSnap'>
+# <class 'time_slider.smf.SMFInstance'>
+# <type 'exceptions.Exception'>
+# <type 'exceptions.BaseException'>
+# <type 'object'>
+#
+# We'd like it to look like this:
+#
+# <class 'time_slider.linux.autosnapsmf.AutoSnap'>
+# <class 'time_slider.autosnapsmf.AutoSnap'>
+# <class 'time_slider.linux.smf.SMFInstance'>
+# <class 'time_slider.smf.SMFInstance'>
+# <type 'exceptions.Exception'>
+# <type 'exceptions.BaseException'>
+# <type 'object'>
+#
+# so we can inject some linux specific things into SMF without having to copy all
+# the code.
+#
+# This has to be done here as the __init__ of AutoSnap will otherwise fail.
+#
+
+base.AutoSnap.__bases__ = (smf.SMFInstance,)
+
+if __name__ == "__main__":
+    defaults = get_default_schedules()
+    for sched in defaults:
+        S = AutoSnap(sched[0])
+        print S.get_schedule_details()
diff --git a/usr/share/time-slider/lib/time_slider/timesliderd.py b/usr/share/time-slider/lib/time_slider/timesliderd.py
index d3fee51..dc669b6 100755
--- a/usr/share/time-slider/lib/time_slider/timesliderd.py
+++ b/usr/share/time-slider/lib/time_slider/timesliderd.py
@@ -44,7 +44,7 @@ import dbussvc
 import zfs
 import smf
 import time_slider.linux.timeslidersmf as timeslidersmf
-import autosnapsmf
+import time_slider.linux.autosnapsmf as autosnapsmf
 import plugin
 from time_slider.linux.rbac import RBACprofile
 import util