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revision 1.1, Tue Sep 30 15:23:55 2008 UTC revision 1.8, Mon Mar 2 22:16:27 2009 UTC
# Line 23  Line 23 
23  use ERDBLoadGroup;  use ERDBLoadGroup;
24  use ERDBGenerate;  use ERDBGenerate;
25  use Stats;  use Stats;
26    use Time::HiRes;
27    
28    
29  =head1 ERDBLoader Script  =head1 ERDBLoader Script
# Line 44  Line 45 
45  tables that are loaded at the same time. For each table in a named group that  tables that are loaded at the same time. For each table in a named group that
46  does not exist in the database, the script first attempts to find a completed  does not exist in the database, the script first attempts to find a completed
47  data file. If one does not exist, it attempts to create one by collating section  data file. If one does not exist, it attempts to create one by collating section
48  files. Once the collated section file is finished, it is loaded into the  files. Once the collated section files for a load group are finished, they are
49  database.  loaded into the database.
50    
51  =head2 Positional Parameters  =head2 Positional Parameters
52    
# Line 56  Line 57 
57  Name of the ERDB database. This should be the class name for the subclass used  Name of the ERDB database. This should be the class name for the subclass used
58  to access the database.  to access the database.
59    
   
60  =back  =back
61    
62  =head2 Command-Line Options  =head2 Command-Line Options
# Line 68  Line 68 
68  Specifies the tracing level. The higher the tracing level, the more messages  Specifies the tracing level. The higher the tracing level, the more messages
69  will appear in the trace log. Use E to specify emergency tracing.  will appear in the trace log. Use E to specify emergency tracing.
70    
 =item replace  
   
 Normally, if a table exists in the database, it will not be loaded. If this  
 option is specified, however, existing tables will be dropped and recreated.  
   
 =item resume  
   
 If specified, then the group list must contain a single group. The specified  
 group and all groups after it in the group list will be processed.  
   
71  =item user  =item user
72    
73  Name suffix to be used for log files. If omitted, the PID is used.  Name suffix to be used for log files. If omitted, the PID is used.
# Line 86  Line 76 
76    
77  If specified, turns on tracing of SQL activity.  If specified, turns on tracing of SQL activity.
78    
79    =item clear
80    
81    If specified, existing load files will be recreated from sections if the sections
82    are present.
83    
84  =item background  =item background
85    
86  Save the standard and error output to files. The files will be created  Save the standard and error output to files. The files will be created
# Line 97  Line 92 
92    
93  Display this command's parameters and options.  Display this command's parameters and options.
94    
95    =item keepSections
96    
97    If specified, section files (the fragments of data load files created by
98    [[ERDBGeneratorPl]], will not be deleted after they are collated.
99    
100    =item sanityCheck
101    
102    If specified, no tables will be loaded. Instead, the first I<N> records from the
103    assembled load files will be displayed so that the file contents can be
104    visually matched against the column names.
105    
106  =item warn  =item warn
107    
108  Create an event in the RSS feed when an error occurs.  Create an event in the RSS feed when an error occurs.
# Line 105  Line 111 
111    
112  Phone number to message when the script is complete.  Phone number to message when the script is complete.
113    
114    =item DBD
115    
116    Name of the DBD file. If specified, the DBD must be in the main FIG directory
117    (specified in C<$FIG_Config::fig>). This option allows the use of an alternate
118    DBD during load, so that access to the database by other processes is not
119    compromised.
120    
121    =item loadDirectory
122    
123    Directoty containing the load files. This option allows you to request that
124    load files from another version of the NMPDR be used, which is useful when
125    creating a new NMPDR: we can yank in the data from the previous database while
126    waiting for the new load files to be generated.
127    
128  =back  =back
129    
130  =cut  =cut
# Line 112  Line 132 
132  # Get the command-line options and parameters.  # Get the command-line options and parameters.
133  my ($options, @parameters) = StandardSetup([qw(ERDBLoadGroup ERDB Stats) ],  my ($options, @parameters) = StandardSetup([qw(ERDBLoadGroup ERDB Stats) ],
134                                             {                                             {
135                                                trace => ["", "tracing level"],                                                clear => ["", "overwrite existing load files if sections are present"],
136                                                replace => ["", "if specified, existing tables will be overwritten"],                                                sanityCheck => ["", "don't load, trace contents of first N load file records instead"],
137                                                resume => ["", "if specified, the specified group and all groups that normally come after it will be processed"],                                                trace => ["2", "tracing level"],
138                                                phone => ["", "phone number (international format) to call when load finishes"]                                                keepSections => ["", "if specified, section files will not be deleted after being collated"],
139                                                  phone => ["", "phone number (international format) to call when load finishes"],
140                                                  DBD => ["", "if specified, the name of a DBD file in the FIG directory"],
141                                                  loadDirectory => ["", "if specified, an alternate directory containing the load files"],
142                                             },                                             },
143                                             "<database> <group1> <group2> ...",                                             "<database> <group1> <group2> ...",
144                                             @ARGV);                                             @ARGV);
# Line 125  Line 148 
148  eval {  eval {
149      # Get the parameters.      # Get the parameters.
150      my ($database, @groups) = @parameters;      my ($database, @groups) = @parameters;
151      # Connect to the database.      # Check for an alternate DBD.
152      my $erdb = ERDB::GetDatabase($database);      my $altDBD = ($options->{DBD} ? "$FIG_Config::fig/$options->{DBD}" : undef);
153        # Connect to the database and get its load directory.
154        my $erdb = ERDB::GetDatabase($database, $altDBD);
155      # Fix the group list.      # Fix the group list.
156      my @realGroups = ERDBLoadGroup::ComputeGroups($erdb, $options, \@groups);      my @realGroups = ERDBLoadGroup::ComputeGroups($erdb, \@groups);
157      # Get the source object and load directory for this database.      # Get the source object and load directory for this database.
158      my $source = $erdb->GetSourceObject();      my $source = $erdb->GetSourceObject();
159      my $directory = $erdb->LoadDirectory();  
160        my $directory = $options->{loadDirectory} || $erdb->LoadDirectory();
161      # Get the list of sections.      # Get the list of sections.
162      my @sectionList = $erdb->SectionList($source);      my @sectionList = $erdb->SectionList($source);
163      # Create a statistics object to track our progress.      # Create a statistics object to track our progress.
164      my $stats = Stats->new();      my $stats = Stats->new();
165      # Get the hash of group names to table names.      # Find out if we're doing a sanity check.
166      my $groupHash = ERDBLoadGroup::GetGroupHash($erdb);      my $sanityCheck = $options->{sanityCheck} || "";
167        # Start a timer.
168        my $totalStart = time();
169      # Loop through the groups.      # Loop through the groups.
170      for my $group (@realGroups) {      for my $group (@realGroups) {
171          # Get the list of tables for this group.          # Get the list of tables for this group.
172          my $tableList = $groupHash->{$group};          my @tableList = ERDBLoadGroup::GetTables($erdb, $group);
173            # We need to insure there is a data file for every table. If we fail to find one,
174            # we set the following error flag, which prevents us from loading the database.
175            my $missingTable = 0;
176            # Loop through the tables in this group.
177            for my $table (@tableList) {
178                Trace("Processing table $table for assembly.") if T(2);
179                # Get the section file names.
180                my @sectionFiles =
181                    map { ERDBGenerate::CreateFileName($table, $_, 'data', $directory) } @sectionList;
182                # Get the data file name.
183                my $dataFile = ERDBGenerate::CreateFileName($table, undef, 'data', $directory);
184                # Do we have it?
185                if (-f $dataFile && ! $options->{clear}) {
186                    # Yes. This is good news.
187                    $stats->Add('tables-found' => 1);
188                    Trace("Table file found for $table.") if T(3);
189                } else {
190                    # No, we must build it. Verify that we have all the sections.
191                    my @missingFiles = grep { ! -f $_ } @sectionFiles;
192                    # Did we find everything?
193                    if (scalar @missingFiles) {
194                        # No! Denote that we have a missing table.
195                        $missingTable++;
196                        $stats->Add('tables-skipped' => 1);
197                        # If the user wants a sanity check, we want to give him some
198                        # data anyway.
199                        if ($sanityCheck) {
200                            # Get some data lines in the sections. Note we stop when we've exceeded
201                            # the number of lines expected by the sanity check.
202                            my @lines;
203                            for my $sectionFile (@sectionFiles) {
204                                if (-s $sectionFile && scalar(@lines) < $sanityCheck) {
205                                    Trace("Reading from $sectionFile for $table.") if T(3);
206                                    push @lines, Tracer::GetFile($sectionFile);
207                                }
208                            }
209                            # Create a new temporary file.
210                            my $tmpFile = "$FIG_Config::temp/$table$$.temp.dtx";
211                            my $oh = Open(undef, ">$tmpFile");
212                            # Put all the data into it.
213                            Trace(scalar(@lines) . " data lines found.") if T(3);
214                            print $oh join("\n", @lines);
215                            close $oh;
216                            # Sanity check the temp file.
217                            CheckLoadFile($erdb, $table, $tmpFile, $sanityCheck);
218                            # Clean it up.
219                            unlink $tmpFile;
220                        } else {
221                            # Otherwise tell the user about all the missing files.
222                            for my $missingFile (@missingFiles) {
223                                $stats->Add('sections-missing' => 1);
224                                $stats->AddMessage("Data file $missingFile not found for table $table.");
225                            }
226                        }
227                    } else {
228                        # We have all the sections. Try to assemble them into a data file.
229                        my $sortStart = time();
230                        my $sortCommand = $erdb->SortNeeded($table) . " >$dataFile";
231                        Trace("Sort command: $sortCommand") if T(3);
232                        # Pipe to the sort command. Note that we turn on autoflush
233                        # so there's no buffering.
234                        my $oh = Open(undef, "| $sortCommand");
235                        select $oh; $| = 1; select STDOUT;
236                        # Loop through the sections.
237                        for my $sectionFile (@sectionFiles) {
238                            Trace("Collating $sectionFile.") if T(3);
239                            $stats->Add("$table-sections" => 1);
240                            # Loop through the section file.
241                            my $ih = Open(undef, "<$sectionFile");
242                            while (defined (my $line = <$ih>)) {
243                                print $oh $line;
244                                $stats->Add("$table-collations" => 1);
245                            }
246                        }
247                        # Finish the sort step.
248                        Trace("Finishing collate for $table.") if T(3);
249                        close $oh;
250                        $stats->Add('tables-collated' => 1);
251                        $stats->Add('collate-time' => time() - $sortStart);
252                    }
253                }
254                # Now that we know we have a full data file, we can delete the
255                # section files to make room in the data directory. The user can
256                # turn this behavior off with the keepSections option.
257                if (! $options->{keepSections}) {
258                    for my $sectionFile (@sectionFiles) {
259                        if (-e $sectionFile) {
260                            unlink $sectionFile;
261                            $stats->Add('files-deleted' => 1);
262                        }
263                    }
264                    Trace("Section files for $table deleted.") if T(3);
265                }
266            }
267            # Were any tables missing?
268            if ($missingTable) {
269                # Yes, skip this group.
270                $stats->Add('groups-skipped' => 1);
271                Trace("Skipping $group group: $missingTable missing tables.") if T(2);
272            } else {
273                # No! Process this group's files.
274                if ($sanityCheck eq "") {
275                    Trace("Loading group $group into database.") if T(2);
276                } else {
277                    Trace("Sanity check for group $group.") if T(2);
278                }
279                my $loadStart = time();
280                for my $table (@tableList) {
281                    my $fileName = ERDBGenerate::CreateFileName($table, undef, 'data', $directory);
282                    # Do we want a real load or a sanity check?
283                    if ($sanityCheck eq "") {
284                        # Real load.
285                        my $newStats = $erdb->LoadTable($fileName, $table, truncate => 1, failOnError => 1);
286                        $stats->Accumulate($newStats);
287                        Trace("$fileName loaded into $table.") if T(3);
288                    } elsif ($sanityCheck > 0) {
289                        # Here we want a sanity check. Note that if the check value is 0,
290                        # we don't bother. The user just wants to suppress the load step.
291                        CheckLoadFile($erdb, $table, $fileName, $sanityCheck);
292                    }
293      }      }
294                $stats->Add("groups-loaded" => 1);
295                $stats->Add('load-time' => 1);
296            }
297        }
298        $stats->Add('total-time' => time() - $totalStart);
299        # Display the statistics from this run.
300        Trace("Statistics for load:\n" . $stats->Show()) if T(2);
301  };  };
302  if ($@) {  if ($@) {
303      Trace("Script failed with error: $@") if T(0);      Trace("Script failed with error: $@") if T(0);
     $rtype = "error";  
304  } else {  } else {
305      Trace("Script complete.") if T(2);      Trace("Script complete.") if T(2);
     $rtype = "no error";  
306  }  }
307  if ($options->{phone}) {  if ($options->{phone}) {
308      my $msgID = Tracer::SendSMS($options->{phone}, "ERDBLoader terminated with $rtype.");      my $msgID = Tracer::SendSMS($options->{phone}, "ERDBLoader completed.");
309      if ($msgID) {      if ($msgID) {
310          Trace("Phone message sent with ID $msgID.") if T(2);          Trace("Phone message sent with ID $msgID.") if T(2);
311      } else {      } else {
# Line 160  Line 313 
313      }      }
314  }  }
315    
316    =head2 Internal Methods
317    
318    =head3 CheckLoadFile
319    
320        CheckLoadFile($erdb, $table, $fileName, $count);
321    
322    Read the first few records of a load file and trace the contents at level
323    2. This allows the user to visually compare the load file contents with
324    the database definition.
325    
326    =over 4
327    
328    =item erdb
329    
330    [[ErdbPm]] object describing the database.
331    
332    =item table
333    
334    Name of the table to check.
335    
336    =item fileName
337    
338    Name of the load file to check.
339    
340    =item count
341    
342    Number of records to check.
343    
344    =back
345    
346    =cut
347    
348    sub CheckLoadFile {
349        # Get the parameters.
350        my ($erdb, $table, $fileName, $count) = @_;
351        # Open the file for input.
352        my $ih = Open(undef, "<$fileName");
353        # Slurp the first N records.
354        my @records;
355        while (! eof $ih && scalar(@records) < $count) {
356            push @records, [ Tracer::GetLine($ih) ];
357        }
358        my $found = scalar(@records);
359        Trace("$found records for $table found in sanity check using $fileName.") if T(2);
360        # Do we have any data at all?
361        if ($found) {
362            # Yes. Get the table's descriptor. We use this to determine the field names.
363            my $relationData = $erdb->FindRelation($table);
364            Confess("Relation $table not found in database.") if (! defined $relationData);
365            my @fields = @{$relationData->{Fields}};
366            # If this is a relationship, we need the FROM and TO data.
367            my %ends; ($ends{from}, $ends{to}) = $erdb->GetRelationshipEntities($table);
368            # Loop through the fields. We generate one message per field.
369            for (my $i = 0; $i <= $#fields; $i++) {
370                # Get this field's information.
371                my $fieldInfo = $fields[$i];
372                my $type = $fieldInfo->{type};
373                my $name = $fieldInfo->{name};
374                if ($name =~ /^(from|to)-link$/) {
375                    # Here it's a relationship link, so add the name of the target table to
376                    # the type.
377                    $type .= " ($ends{$1})";
378                }
379                # This is going to be a multi-line trace message. We start with the field name and type.
380                my @lines = ("Values for $table($name), type $type:\n");
381                # Loop through the records. We generate one line of data per record.
382                for (my $j = 0; $j < $found; $j++) {
383                    # Get the field value.
384                    my $field = $records[$j]->[$i];
385                    # Compute the record label.
386                    my $line = "Record $j";
387                    # Check for unusual cases.
388                    if (! defined $field || $field eq '') {
389                        $line .= "= <empty>";
390                    } else {
391                        # Make sure we don't trace something ungodly.
392                        my $excess = (length $field) - 40;
393                        if ($excess > 0) {
394                            $field = substr($field, 0, 40) . " >> + $excess characters";
395                        }
396                        $line .= ": $field";
397                    }
398                    # Save this line. We indent a little for readability.
399                    push @lines, "   $line";
400                }
401                # Trace this field.
402                Trace(join("\n", @lines)) if T(2);
403            }
404        }
405    }
406    
407    
408  1;  1;

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