1 |
################################# |
## ------------------------------------------------------------------------ |
2 |
# |
## |
3 |
# $Id$ |
## $Id$ |
4 |
# |
## |
5 |
# $Log$ |
## Copyright (c) 2002 Andreas Motl <andreas.motl@ilo.de> |
6 |
# Revision 1.1 2002/10/10 03:43:12 cvsjoko |
## |
7 |
# + new |
## See COPYRIGHT section in pod text below for usage and distribution rights. |
8 |
# |
## |
9 |
# |
## ------------------------------------------------------------------------ |
10 |
################################# |
## |
11 |
|
## $Log$ |
12 |
|
## Revision 1.15 2003/01/19 03:12:59 joko |
13 |
|
## + modified header |
14 |
|
## - removed pod-documentation - now in 'Storage.pod' |
15 |
|
## |
16 |
|
## Revision 1.14 2002/12/19 16:27:59 joko |
17 |
|
## - moved 'sub dropDb' to Data::Storage::Handler::DBI |
18 |
|
## |
19 |
|
## Revision 1.13 2002/12/17 21:54:12 joko |
20 |
|
## + feature when using Tangram: |
21 |
|
## + what? each object created should delivered with a globally(!?) unique identifier (GUID) besides the native tangram object id (OID) |
22 |
|
## + patched Tangram::Storage (jonen) |
23 |
|
## + enhanced Data::Storage::Schema::Tangram (joko) |
24 |
|
## + enhanced Data::Storage::Handler::Tangram 'sub getObjectByGuid' (jonen) |
25 |
|
## + how? |
26 |
|
## + each concrete (non-abstract) class gets injected with an additional field/property called 'guid' - this is done (dynamically) on schema level |
27 |
|
## + this property ('guid') gets filled on object creation/insertion from 'sub Tangram::Storage::_insert' using Data::UUID from CPAN |
28 |
|
## + (as for now) this property can get accessed by calling 'getObjectByGuid' on the already known storage-handle used throughout the application |
29 |
|
## |
30 |
|
## Revision 1.12 2002/12/12 02:50:15 joko |
31 |
|
## + this now (unfortunately) needs DBI for some helper functions |
32 |
|
## + TODO: these have to be refactored to another scope! (soon!) |
33 |
|
## |
34 |
|
## Revision 1.11 2002/12/11 06:53:19 joko |
35 |
|
## + updated pod |
36 |
|
## |
37 |
|
## Revision 1.10 2002/12/07 03:37:23 joko |
38 |
|
## + updated pod |
39 |
|
## |
40 |
|
## Revision 1.9 2002/12/01 22:15:45 joko |
41 |
|
## - sub createDb: moved to handler |
42 |
|
## |
43 |
|
## Revision 1.8 2002/11/29 04:48:23 joko |
44 |
|
## + updated pod |
45 |
|
## |
46 |
|
## Revision 1.7 2002/11/17 06:07:18 joko |
47 |
|
## + creating the handler is easier than proposed first - for now :-) |
48 |
|
## + sub testAvailability |
49 |
|
## |
50 |
|
## Revision 1.6 2002/11/09 01:04:58 joko |
51 |
|
## + updated pod |
52 |
|
## |
53 |
|
## Revision 1.5 2002/10/29 19:24:18 joko |
54 |
|
## - reduced logging |
55 |
|
## + added some pod |
56 |
|
## |
57 |
|
## Revision 1.4 2002/10/27 18:35:07 joko |
58 |
|
## + added pod |
59 |
|
## |
60 |
|
## Revision 1.3 2002/10/25 11:40:37 joko |
61 |
|
## + enhanced robustness |
62 |
|
## + more logging for debug-levels |
63 |
|
## + sub dropDb |
64 |
|
## |
65 |
|
## Revision 1.2 2002/10/17 00:04:29 joko |
66 |
|
## + sub createDb |
67 |
|
## + sub isConnected |
68 |
|
## + bugfixes regarding "deep recursion" stuff |
69 |
|
## |
70 |
|
## Revision 1.1 2002/10/10 03:43:12 cvsjoko |
71 |
|
## + new |
72 |
|
## ------------------------------------------------------------------------ |
73 |
|
|
74 |
|
|
75 |
|
BEGIN { |
76 |
|
$Data::Storage::VERSION = 0.03; |
77 |
|
} |
78 |
|
|
79 |
package Data::Storage; |
package Data::Storage; |
80 |
|
|
82 |
use warnings; |
use warnings; |
83 |
|
|
84 |
use Data::Storage::Locator; |
use Data::Storage::Locator; |
85 |
use Data::Storage::Handler::DBI; |
use Data::Dumper; |
86 |
use Data::Storage::Handler::Tangram; |
|
87 |
|
# TODO: wipe out! |
88 |
|
use DBI; |
89 |
|
|
90 |
|
# TODO: actually implement level (integrate with Log::Dispatch) |
91 |
|
my $TRACELEVEL = 0; |
92 |
|
|
93 |
# get logger instance |
# get logger instance |
94 |
my $logger = Log::Dispatch::Config->instance; |
my $logger = Log::Dispatch::Config->instance; |
97 |
my $invocant = shift; |
my $invocant = shift; |
98 |
my $class = ref($invocant) || $invocant; |
my $class = ref($invocant) || $invocant; |
99 |
#my @args = normalizeArgs(@_); |
#my @args = normalizeArgs(@_); |
100 |
|
|
101 |
my $arg_locator = shift; |
my $arg_locator = shift; |
102 |
my $arg_options = shift; |
my $arg_options = shift; |
103 |
|
|
104 |
|
if (!$arg_locator) { |
105 |
|
$logger->critical( __PACKAGE__ . "->new: No locator passed in!" ); |
106 |
|
return; |
107 |
|
} |
108 |
|
|
109 |
#my $self = { STORAGEHANDLE => undef, @_ }; |
#my $self = { STORAGEHANDLE => undef, @_ }; |
110 |
my $self = { STORAGEHANDLE => undef, locator => $arg_locator, options => $arg_options }; |
my $self = { STORAGEHANDLE => undef, locator => $arg_locator, options => $arg_options }; |
111 |
$logger->debug( __PACKAGE__ . "[$self->{locator}->{type}]" . "->new(@_)" ); |
#$logger->debug( __PACKAGE__ . "[$self->{locator}->{type}]" . "->new(@_)" ); |
112 |
|
$logger->debug( __PACKAGE__ . "[$arg_locator->{type}]" . "->new(@_)" ); |
113 |
return bless $self, $class; |
return bless $self, $class; |
114 |
} |
} |
115 |
|
|
116 |
sub AUTOLOAD { |
sub AUTOLOAD { |
117 |
|
|
118 |
|
# since this is a core function acting as dispatcher to $self->{STORAGEHANDLE}, |
119 |
|
# some sophisticated handling and filtering is needed to avoid things like |
120 |
|
# - Deep recursion on subroutine "Data::Storage::AUTOLOAD" |
121 |
|
# - Deep recursion on subroutine "Data::Storage::Handler::Abstract::AUTOLOAD" |
122 |
|
# - Deep recursion on anonymous subroutine at [...] |
123 |
|
# we also might filter log messages caused by logging to itself in "advanced logging of AUTOLOAD calls" |
124 |
|
|
125 |
my $self = shift; |
my $self = shift; |
126 |
our $AUTOLOAD; |
our $AUTOLOAD; |
127 |
|
|
131 |
my $method = $AUTOLOAD; |
my $method = $AUTOLOAD; |
132 |
$method =~ s/^.*:://; |
$method =~ s/^.*:://; |
133 |
|
|
134 |
#$logger->debug( __PACKAGE__ . "[$self->{locator}->{type}]" . "->" . $method . "(@_)" . " (AUTOLOAD)" ); |
# advanced logging of AUTOLOAD calls ... |
135 |
|
# ... nice but do it only when TRACING (TODO) is enabled |
136 |
|
if ($TRACELEVEL) { |
137 |
|
my $logstring = ""; |
138 |
|
$logstring .= __PACKAGE__ . "[$self->{locator}->{type}]" . "->" . $method; |
139 |
|
#print "count: ", $#_, "\n"; |
140 |
|
#$logstring .= Dumper(@_) if ($#_ != -1); |
141 |
|
my $tabcount = int( (80 - length($logstring)) / 10 ); |
142 |
|
$logstring .= "\t" x $tabcount . "(AUTOLOAD)"; |
143 |
|
# TODO: only ok if logstring doesn't contain |
144 |
|
# e.g. "Data::Storage[Tangram]->insert(SystemEvent=HASH(0x5c0034c)) (AUTOLOAD)" |
145 |
|
# but that would be _way_ too specific as long as we don't have an abstract handler for this ;) |
146 |
|
$logger->debug( $logstring ); |
147 |
|
#print join('; ', @_); |
148 |
|
} |
149 |
|
|
150 |
|
# filtering AUTOLOAD calls and first-time-touch of the actual storage impl |
151 |
if ($self->_filter_AUTOLOAD($method)) { |
if ($self->_filter_AUTOLOAD($method)) { |
152 |
|
#print "_accessStorage\n"; |
153 |
$self->_accessStorage(); |
$self->_accessStorage(); |
154 |
$self->{STORAGEHANDLE}->$method(@_); |
return $self->{STORAGEHANDLE}->$method(@_); |
155 |
} |
} |
156 |
|
|
157 |
} |
} |
180 |
sub _accessStorage { |
sub _accessStorage { |
181 |
my $self = shift; |
my $self = shift; |
182 |
# TODO: to some tracelevel! |
# TODO: to some tracelevel! |
183 |
#$logger->debug( __PACKAGE__ . "[$self->{type}]" . "->_accessStorage()" ); |
if ($TRACELEVEL) { |
184 |
|
$logger->debug( __PACKAGE__ . "[$self->{locator}->{type}]" . "->_accessStorage()" ); |
185 |
|
} |
186 |
if (!$self->{STORAGEHANDLE}) { |
if (!$self->{STORAGEHANDLE}) { |
187 |
$self->_createStorageHandle(); |
$self->_createStorageHandle(); |
188 |
} |
} |
190 |
|
|
191 |
sub _createStorageHandle { |
sub _createStorageHandle { |
192 |
my $self = shift; |
my $self = shift; |
|
|
|
193 |
my $type = $self->{locator}->{type}; |
my $type = $self->{locator}->{type}; |
194 |
$logger->debug( __PACKAGE__ . "[$type]" . "->_createStorageHandle()" ); |
$logger->debug( __PACKAGE__ . "[$type]" . "->_createStorageHandle()" ); |
195 |
|
|
196 |
my $pkg = "Data::Storage::Handler::" . $type . ""; |
my $pkg = "Data::Storage::Handler::" . $type . ""; |
197 |
|
|
198 |
# propagate args to handler |
# try to load perl module at runtime |
199 |
# needs some more thoughts! (not only "dbi" to Tangram, when (in future) db is not more the common case) |
my $evalstr = "use $pkg;"; |
200 |
if ($type eq 'DBI') { |
eval($evalstr); |
201 |
#my @args = %{$self->{locator}->{dbi}}; |
if ($@) { |
202 |
my @args = %{$self->{locator}}; |
$logger->error( __PACKAGE__ . "[$type]" . "->_createStorageHandle(): $@" ); |
203 |
$self->{STORAGEHANDLE} = $pkg->new( @args ); |
return; |
|
} |
|
|
if ($type eq 'Tangram') { |
|
|
#$self->{STORAGEHANDLE} = $pkg->new( dsn => $self->{locator}->{dbi}->{dsn} ); |
|
|
#my @args = %{$self->{locator}->{dbi}}; |
|
|
my @args = %{$self->{locator}}; |
|
|
$self->{STORAGEHANDLE} = $pkg->new( @args ); |
|
|
#$self->{STORAGEHANDLE_UNDERLYING} = $self->{STORAGEHANDLE}->getUnderlyingStorage(); |
|
|
#$self->{STORAGEHANDLE_UNDERLYING}->_configureCOREHANDLE(); |
|
204 |
} |
} |
205 |
|
|
206 |
|
# build up some additional arguments to pass on |
207 |
|
#my @args = %{$self->{locator}}; |
208 |
|
my @args = (); |
209 |
|
|
210 |
|
# - create new storage handle object |
211 |
|
# - propagate arguments to handler |
212 |
|
# - pass locator by reference to be able to store status- or meta-information in it |
213 |
|
$self->{STORAGEHANDLE} = $pkg->new( locator => $self->{locator}, @args ); |
214 |
|
|
215 |
} |
} |
216 |
|
|
217 |
sub addLogDispatchHandler { |
sub addLogDispatchHandler { |
219 |
my $self = shift; |
my $self = shift; |
220 |
my $name = shift; |
my $name = shift; |
221 |
my $package = shift; |
my $package = shift; |
222 |
my $logger = shift; |
my $logger1 = shift; |
223 |
my $objectCreator = shift; |
my $objectCreator = shift; |
224 |
|
|
225 |
#$logger->add( Log::Dispatch::Tangram->new( name => $name, |
#$logger->add( Log::Dispatch::Tangram->new( name => $name, |
243 |
} |
} |
244 |
|
|
245 |
sub removeLogDispatchHandler { |
sub removeLogDispatchHandler { |
246 |
|
my $self = shift; |
247 |
my $self = shift; |
my $name = shift; |
248 |
my $name = shift; |
#my $logger = shift; |
249 |
my $logger = shift; |
$logger->remove($name); |
|
|
|
|
$logger->remove($name); |
|
|
|
|
250 |
} |
} |
251 |
|
|
252 |
sub getDbName { |
sub getDbName { |
257 |
return $database_name; |
return $database_name; |
258 |
} |
} |
259 |
|
|
260 |
|
sub testAvailability { |
261 |
|
my $self = shift; |
262 |
|
my $status = $self->testDsn(); |
263 |
|
$self->{locator}->{status}->{available} = $status; |
264 |
|
return $status; |
265 |
|
} |
266 |
|
|
267 |
|
sub isConnected { |
268 |
|
my $self = shift; |
269 |
|
# TODO: REVIEW! |
270 |
|
return 1 if $self->{STORAGEHANDLE}; |
271 |
|
} |
272 |
|
|
273 |
sub testDsn { |
sub testDsn { |
274 |
my $self = shift; |
my $self = shift; |
275 |
my $dsn = $self->{locator}->{dbi}->{dsn}; |
my $dsn = $self->{locator}->{dbi}->{dsn}; |
277 |
if ( my $dbh = DBI->connect($dsn, '', '', { |
if ( my $dbh = DBI->connect($dsn, '', '', { |
278 |
PrintError => 0, |
PrintError => 0, |
279 |
} ) ) { |
} ) ) { |
280 |
|
|
281 |
|
# TODO: REVIEW |
282 |
$dbh->disconnect(); |
$dbh->disconnect(); |
283 |
|
|
284 |
return 1; |
return 1; |
285 |
} else { |
} else { |
286 |
$logger->error( __PACKAGE__ . "[$self->{locator}->{type}]" . "->testDsn(): " . "DBI-error: " . DBI::errstr ); |
$logger->warning( __PACKAGE__ . "[$self->{locator}->{type}]" . "->testDsn(): " . "DBI-error: " . $DBI::errstr ); |
287 |
} |
} |
288 |
} |
} |
289 |
|
|
|
1; |
|
290 |
|
1; |
291 |
|
__END__ |