1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
# encoding: UTF-8
require 'mauve/datamapper'
require 'log4r'
module Mauve
class AlertHistory
include DataMapper::Resource
property :alert_id, Integer, :key => true
property :history_id, Integer, :key => true
belongs_to :alert
belongs_to :history
def self.migrate!
#
# This copies the alert IDs from the old History table to the new AlertHistories thing, but only if there are no AertHistories
# and some Histories
#
if AlertHistory.last.nil? and not History.last.nil?
#
# This is horrid. FIXME!
#
history_schema = '"id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, "type" VARCHAR(50) DEFAULT \'unknown\' NOT NULL, "event" TEXT DEFAULT \'Nothing set\' NOT NULL, "created_at" TIMESTAMP NOT NULL'
history_cols = 'id, type, event, created_at'
##
# Now adjust the Histories table to remove its alert_id col
#
["BEGIN TRANSACTION;",
"INSERT INTO mauve_alert_histories (alert_id, history_id) SELECT alert_id, id FROM mauve_histories;",
"CREATE TEMPORARY TABLE mauve_histories_backup( #{history_schema} );",
"INSERT INTO mauve_histories_backup SELECT #{history_cols} FROM mauve_histories;",
"DROP TABLE mauve_histories;",
"CREATE TABLE mauve_histories( #{history_schema} );",
"INSERT INTO mauve_histories SELECT #{history_cols} FROM mauve_histories_backup;",
"DROP TABLE mauve_histories_backup;",
"COMMIT;"].each do |statement|
repository(:default).adapter.execute(statement)
end
end
end
end
class History
include DataMapper::Resource
# so .first always returns the most recent update
default_scope(:default).update(:order => [:created_at.desc, :id.desc])
#
# If these properties change.. then the migration above will break horribly. FIXME.
#
property :id, Serial
property :type, String, :required => true, :default => "unknown"
property :event, Text, :required => true, :default => "Nothing set"
property :created_at, Time, :required => true
has n, :alerts, :through => :alerthistory
before :valid?, :set_created_at
def self.migrate!
##
#
# FIXME this is dire.
#
schema = repository(:default).adapter.execute(".schema mauve_histories")
end
def set_created_at(context = :default)
self.created_at = Time.now unless self.created_at.is_a?(Time) or self.created_at.is_a?(DateTime)
end
def logger
Log4r::Logger.new self.class.to_s
end
end
end
|
