[Ovirt-devel] [PATCH server] (Legit) Add audit trl for hosts join/leaving hwpools w/Rails observer class
Steve Linabery
slinabery at redhat.com
Fri Jan 9 01:50:53 UTC 2009
Modify graph_controller.rb to utilize new audit feature when generating data for flexchart
---
src/app/controllers/graph_controller.rb | 64 +++++++++++++++++++++++++--
src/app/models/hardware_pool.rb | 2 +-
src/app/models/host.rb | 9 ++++
src/app/models/host_observer.rb | 47 ++++++++++++++++++++
src/app/models/membership_audit_event.rb | 26 +++++++++++
src/app/models/pool.rb | 1 +
src/config/environment.rb | 2 +-
src/db/migrate/033_add_pool_audit_trail.rb | 44 +++++++++++++++++++
8 files changed, 188 insertions(+), 7 deletions(-)
create mode 100644 src/app/models/host_observer.rb
create mode 100644 src/app/models/membership_audit_event.rb
create mode 100644 src/db/migrate/033_add_pool_audit_trail.rb
diff --git a/src/app/controllers/graph_controller.rb b/src/app/controllers/graph_controller.rb
index ee9425f..e8eea7e 100644
--- a/src/app/controllers/graph_controller.rb
+++ b/src/app/controllers/graph_controller.rb
@@ -6,9 +6,9 @@ class GraphController < ApplicationController
def flexchart_data
@id = params[:id]
target = params[:target]
- startTime = params[:startTime].to_i
- endTime = params[:endTime].to_i
- duration = endTime - startTime
+ startTime = Time.at(params[:startTime].to_i)
+ endTime = Time.at(params[:endTime].to_i)
+ duration = endTime.to_i - startTime.to_i
#the maximum number of data points we want in any chart
maxPoints = 100
@@ -29,10 +29,30 @@ class GraphController < ApplicationController
counter = DEV_KEY_COUNTERS[target]
pool = Pool.find(@id)
- hosts = pool.hosts
+ hosts = Host.find(:all,
+ :include=> :membership_audit_events,
+ :conditions => ['membership_audit_events.container_target_id = ?',pool])
+
requestList = [ ]
hosts.each{ |host|
- requestList.push StatsRequest.new(host.hostname, devclass, 0, counter, startTime, duration, resolution, DataFunction::Peak)
+ eventsInRange = host.membership_audit_events.from_pool(pool,
+ startTime,
+ endTime)
+ priorAuditEvent = host.membership_audit_events.most_recent_prior_event_from_pool(pool,startTime)
+ timeRanges = get_ranges_from_event_list(eventsInRange,
+ priorAuditEvent,
+ startTime,
+ endTime)
+ timeRanges.each{ |range|
+ requestList.push StatsRequest.new(host.hostname,
+ devclass,
+ 0,
+ counter,
+ range[0].to_i,
+ range[1].to_i - range[0].to_i,
+ resolution,
+ DataFunction::Peak)
+ }
}
statsList = getAggregateStatsData?(requestList)
@@ -51,6 +71,40 @@ class GraphController < ApplicationController
render :json => graph
end
+ def get_ranges_from_event_list(list, priorEvent, startTime, endTime)
+
+ results = Array.new
+ range = [startTime,endTime]
+
+ joined = false
+ if priorEvent
+ if priorEvent.action == MembershipAuditEvent::JOIN
+ joined = true
+ end
+ end
+
+ list.each_with_index { |event,index|
+ if event.action == MembershipAuditEvent::JOIN
+ joined = true
+ range[0] = event.created_at
+ else
+ range[0] = startTime unless joined
+ joined = false
+ range[1] = event.created_at
+ results.push Array.new(range)
+ range = [startTime,endTime]
+ end
+ }
+
+ if joined
+ range[1] = endTime
+ results.push Array.new(range)
+ end
+
+ results
+ end
+
+
# generate layout for availability bar graphs
def availability_graph
diff --git a/src/app/models/hardware_pool.rb b/src/app/models/hardware_pool.rb
index d39d8e7..b72d485 100644
--- a/src/app/models/hardware_pool.rb
+++ b/src/app/models/hardware_pool.rb
@@ -54,7 +54,7 @@ class HardwarePool < Pool
hosts = Host.find(:all, :conditions => "id in (#{host_ids.join(', ')})")
transaction do
hosts.each do |host|
- host.hardware_pool_id = target_pool_id
+ host.hardware_pool = HardwarePool.find(target_pool_id)
host.save!
end
end
diff --git a/src/app/models/host.rb b/src/app/models/host.rb
index 640782d..813bc1d 100644
--- a/src/app/models/host.rb
+++ b/src/app/models/host.rb
@@ -23,6 +23,15 @@ class Host < ActiveRecord::Base
belongs_to :hardware_pool
belongs_to :bonding_type
+ has_many :membership_audit_events, :as => :member_target, :dependent => :destroy, :order => "created_at ASC" do
+ def from_pool(pool,startTime,endTime)
+ find(:all, :conditions=> ['container_target_id = ? and created_at between ? and ?',pool,startTime,endTime])
+ end
+ def most_recent_prior_event_from_pool(pool,startTime)
+ find(:last, :conditions=> ['container_target_id = ? and created_at < ?',pool,startTime])
+ end
+ end
+
has_many :cpus, :dependent => :destroy
has_many :nics, :dependent => :destroy
has_many :bondings, :dependent => :destroy
diff --git a/src/app/models/host_observer.rb b/src/app/models/host_observer.rb
new file mode 100644
index 0000000..df5efa1
--- /dev/null
+++ b/src/app/models/host_observer.rb
@@ -0,0 +1,47 @@
+#
+# Copyright (C) 2008 Red Hat, Inc.
+# Written by Steve Linabery <slinabery at redhat.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+# MA 02110-1301, USA. A copy of the GNU General Public License is
+# also available at http://www.gnu.org/copyleft/gpl.html.
+
+class HostObserver < ActiveRecord::Observer
+
+ def after_create(a_host)
+ join = MembershipAuditEvent.new({ :member_target => a_host,
+ :container_target => a_host.hardware_pool,
+ :action => MembershipAuditEvent::JOIN })
+ join.save!
+ end
+
+ def before_update(a_host)
+ if a_host.changed?
+ change = a_host.changes['hardware_pool_id']
+ if change
+ leave = MembershipAuditEvent.new({ :member_target => a_host,
+ :container_target => HardwarePool.find(change[0]),
+ :action => MembershipAuditEvent::LEAVE })
+ leave.save!
+
+ join = MembershipAuditEvent.new({ :member_target => a_host,
+ :container_target => HardwarePool.find(change[1]),
+ :action => MembershipAuditEvent::JOIN })
+ join.save!
+ end
+ end
+ end
+end
+
+HostObserver.instance
diff --git a/src/app/models/membership_audit_event.rb b/src/app/models/membership_audit_event.rb
new file mode 100644
index 0000000..b36cbee
--- /dev/null
+++ b/src/app/models/membership_audit_event.rb
@@ -0,0 +1,26 @@
+#
+# Copyright (C) 2008 Red Hat, Inc.
+# Written by Steve Linabery <slinabery at redhat.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+# MA 02110-1301, USA. A copy of the GNU General Public License is
+# also available at http://www.gnu.org/copyleft/gpl.html.
+
+class MembershipAuditEvent < ActiveRecord::Base
+ belongs_to :container_target, :polymorphic => true
+ belongs_to :member_target, :polymorphic => true
+
+ JOIN = "join"
+ LEAVE = "leave"
+end
diff --git a/src/app/models/pool.rb b/src/app/models/pool.rb
index 7034e79..614325a 100644
--- a/src/app/models/pool.rb
+++ b/src/app/models/pool.rb
@@ -20,6 +20,7 @@
class Pool < ActiveRecord::Base
acts_as_nested_set
+ has_many :membership_audit_events, :as => :container_target, :dependent => :destroy
# moved associations here so that nested set :include directives work
# TODO: find a way to put this back into vm_resource_pool.rb
has_many :vms, :dependent => :nullify, :order => "id ASC", :foreign_key => :vm_resource_pool_id
diff --git a/src/config/environment.rb b/src/config/environment.rb
index 53edfad..66cae90 100644
--- a/src/config/environment.rb
+++ b/src/config/environment.rb
@@ -82,7 +82,7 @@ Rails::Initializer.run do |config|
# Activate observers that should always be running
# config.active_record.observers = :cacher, :garbage_collector
-
+ config.active_record.observers = :host_observer
end
# Add new inflection rules using the following format
diff --git a/src/db/migrate/033_add_pool_audit_trail.rb b/src/db/migrate/033_add_pool_audit_trail.rb
new file mode 100644
index 0000000..d4b4338
--- /dev/null
+++ b/src/db/migrate/033_add_pool_audit_trail.rb
@@ -0,0 +1,44 @@
+#
+# Copyright (C) 2008 Red Hat, Inc.
+# Written by Steve Linabery <slinabery at redhat.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+# MA 02110-1301, USA. A copy of the GNU General Public License is
+# also available at http://www.gnu.org/copyleft/gpl.html.
+
+class AddPoolAuditTrail < ActiveRecord::Migration
+ def self.up
+ create_table :membership_audit_events do |t|
+ t.timestamp :created_at
+ t.string :action
+ t.integer :container_target_id
+ t.string :container_target_type
+ t.integer :member_target_id
+ t.string :member_target_type
+ t.integer :lock_version, :default => 0
+ end
+
+ Host.transaction do
+ Host.find(:all).each do |host|
+
+ if (! host.membership_audit_events)
+ event = MembershipAuditEvent.new(:action => MembershipAuditEvent::JOIN,
+ :container_target => host.hardware_pool,
+ :member_target => host)
+ event.save!
+ end
+ end
+ end
+ end
+end
--
1.6.0.6
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