diff lib/tasks/migrate_from_mantis.rake @ 1115:433d4f72a19b redmine-2.2

Update to Redmine SVN revision 11137 on 2.2-stable branch

--- a/lib/tasks/migrate_from_mantis.rake	Wed Jun 27 14:54:18 2012 +0100
+++ b/lib/tasks/migrate_from_mantis.rake	Mon Jan 07 12:01:42 2013 +0000
@@ -1,512 +1,511 @@
-# redMine - project management software
-# Copyright (C) 2006-2007  Jean-Philippe Lang
-#
-# 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; either version 2
-# of the License, or (at your option) any later version.
-# 
-# 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.
-
-desc 'Mantis migration script'
-
-require 'active_record'
-require 'iconv'
-require 'pp'
-
-namespace :redmine do
-task :migrate_from_mantis => :environment do
-  
-  module MantisMigrate
-   
-      DEFAULT_STATUS = IssueStatus.default
-      assigned_status = IssueStatus.find_by_position(2)
-      resolved_status = IssueStatus.find_by_position(3)
-      feedback_status = IssueStatus.find_by_position(4)
-      closed_status = IssueStatus.find :first, :conditions => { :is_closed => true }
-      STATUS_MAPPING = {10 => DEFAULT_STATUS,  # new
-                        20 => feedback_status, # feedback
-                        30 => DEFAULT_STATUS,  # acknowledged
-                        40 => DEFAULT_STATUS,  # confirmed
-                        50 => assigned_status, # assigned
-                        80 => resolved_status, # resolved
-                        90 => closed_status    # closed
-                        }
-                        
-      priorities = IssuePriority.all
-      DEFAULT_PRIORITY = priorities[2]
-      PRIORITY_MAPPING = {10 => priorities[1], # none
-                          20 => priorities[1], # low
-                          30 => priorities[2], # normal
-                          40 => priorities[3], # high
-                          50 => priorities[4], # urgent
-                          60 => priorities[5]  # immediate
-                          }
-    
-      TRACKER_BUG = Tracker.find_by_position(1)
-      TRACKER_FEATURE = Tracker.find_by_position(2)
-      
-      roles = Role.find(:all, :conditions => {:builtin => 0}, :order => 'position ASC')
-      manager_role = roles[0]
-      developer_role = roles[1]
-      DEFAULT_ROLE = roles.last
-      ROLE_MAPPING = {10 => DEFAULT_ROLE,   # viewer
-                      25 => DEFAULT_ROLE,   # reporter
-                      40 => DEFAULT_ROLE,   # updater
-                      55 => developer_role, # developer
-                      70 => manager_role,   # manager
-                      90 => manager_role    # administrator
-                      }
-      
-      CUSTOM_FIELD_TYPE_MAPPING = {0 => 'string', # String
-                                   1 => 'int',    # Numeric
-                                   2 => 'int',    # Float
-                                   3 => 'list',   # Enumeration
-                                   4 => 'string', # Email
-                                   5 => 'bool',   # Checkbox
-                                   6 => 'list',   # List
-                                   7 => 'list',   # Multiselection list
-                                   8 => 'date',   # Date
-                                   }
-                                   
-      RELATION_TYPE_MAPPING = {1 => IssueRelation::TYPE_RELATES,    # related to
-                               2 => IssueRelation::TYPE_RELATES,    # parent of
-                               3 => IssueRelation::TYPE_RELATES,    # child of
-                               0 => IssueRelation::TYPE_DUPLICATES, # duplicate of
-                               4 => IssueRelation::TYPE_DUPLICATES  # has duplicate
-                               }
-                                                                   
-    class MantisUser < ActiveRecord::Base
-      set_table_name :mantis_user_table
-      
-      def firstname
-        @firstname = realname.blank? ? username : realname.split.first[0..29]
-        @firstname
-      end
-      
-      def lastname
-        @lastname = realname.blank? ? '-' : realname.split[1..-1].join(' ')[0..29]
-        @lastname = '-' if @lastname.blank?
-        @lastname
-      end
-      
-      def email
-        if read_attribute(:email).match(/^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$/i) &&
-             !User.find_by_mail(read_attribute(:email))
-          @email = read_attribute(:email)
-        else
-          @email = "#{username}@foo.bar"
-        end
-      end
-      
-      def username
-        read_attribute(:username)[0..29].gsub(/[^a-zA-Z0-9_\-@\.]/, '-')
-      end
-    end
-    
-    class MantisProject < ActiveRecord::Base
-      set_table_name :mantis_project_table
-      has_many :versions, :class_name => "MantisVersion", :foreign_key => :project_id
-      has_many :categories, :class_name => "MantisCategory", :foreign_key => :project_id
-      has_many :news, :class_name => "MantisNews", :foreign_key => :project_id
-      has_many :members, :class_name => "MantisProjectUser", :foreign_key => :project_id
-      
-      def identifier
-        read_attribute(:name).gsub(/[^a-z0-9\-]+/, '-').slice(0, Project::IDENTIFIER_MAX_LENGTH)
-      end
-    end
-    
-    class MantisVersion < ActiveRecord::Base
-      set_table_name :mantis_project_version_table
-      
-      def version
-        read_attribute(:version)[0..29]
-      end
-      
-      def description
-        read_attribute(:description)[0..254]
-      end
-    end
-    
-    class MantisCategory < ActiveRecord::Base
-      set_table_name :mantis_project_category_table
-    end
-    
-    class MantisProjectUser < ActiveRecord::Base
-      set_table_name :mantis_project_user_list_table
-    end
-    
-    class MantisBug < ActiveRecord::Base
-      set_table_name :mantis_bug_table
-      belongs_to :bug_text, :class_name => "MantisBugText", :foreign_key => :bug_text_id
-      has_many :bug_notes, :class_name => "MantisBugNote", :foreign_key => :bug_id
-      has_many :bug_files, :class_name => "MantisBugFile", :foreign_key => :bug_id
-      has_many :bug_monitors, :class_name => "MantisBugMonitor", :foreign_key => :bug_id
-    end
-    
-    class MantisBugText < ActiveRecord::Base
-      set_table_name :mantis_bug_text_table
-      
-      # Adds Mantis steps_to_reproduce and additional_information fields
-      # to description if any
-      def full_description
-        full_description = description
-        full_description += "\n\n*Steps to reproduce:*\n\n#{steps_to_reproduce}" unless steps_to_reproduce.blank?
-        full_description += "\n\n*Additional information:*\n\n#{additional_information}" unless additional_information.blank?
-        full_description
-      end
-    end
-    
-    class MantisBugNote < ActiveRecord::Base
-      set_table_name :mantis_bugnote_table
-      belongs_to :bug, :class_name => "MantisBug", :foreign_key => :bug_id
-      belongs_to :bug_note_text, :class_name => "MantisBugNoteText", :foreign_key => :bugnote_text_id
-    end
-    
-    class MantisBugNoteText < ActiveRecord::Base
-      set_table_name :mantis_bugnote_text_table
-    end
-    
-    class MantisBugFile < ActiveRecord::Base
-      set_table_name :mantis_bug_file_table
-      
-      def size
-        filesize
-      end
-      
-      def original_filename
-        MantisMigrate.encode(filename)
-      end
-      
-      def content_type
-        file_type
-      end
-      
-      def read(*args)
-      	if @read_finished
-      		nil
-      	else
-      		@read_finished = true
-      		content
-      	end
-      end
-    end
-    
-    class MantisBugRelationship < ActiveRecord::Base
-      set_table_name :mantis_bug_relationship_table
-    end
-    
-    class MantisBugMonitor < ActiveRecord::Base
-      set_table_name :mantis_bug_monitor_table
-    end
-    
-    class MantisNews < ActiveRecord::Base
-      set_table_name :mantis_news_table
-    end
-    
-    class MantisCustomField < ActiveRecord::Base
-      set_table_name :mantis_custom_field_table
-      set_inheritance_column :none  
-      has_many :values, :class_name => "MantisCustomFieldString", :foreign_key => :field_id
-      has_many :projects, :class_name => "MantisCustomFieldProject", :foreign_key => :field_id
-      
-      def format
-        read_attribute :type
-      end
-      
-      def name
-        read_attribute(:name)[0..29]
-      end
-    end
-    
-    class MantisCustomFieldProject < ActiveRecord::Base
-      set_table_name :mantis_custom_field_project_table  
-    end
-    
-    class MantisCustomFieldString < ActiveRecord::Base
-      set_table_name :mantis_custom_field_string_table  
-    end
-  
-  
-    def self.migrate
-          
-      # Users
-      print "Migrating users"
-      User.delete_all "login <> 'admin'"
-      users_map = {}
-      users_migrated = 0
-      MantisUser.find(:all).each do |user|
-    	u = User.new :firstname => encode(user.firstname), 
-    				 :lastname => encode(user.lastname),
-    				 :mail => user.email,
-    				 :last_login_on => user.last_visit
-    	u.login = user.username
-    	u.password = 'mantis'
-    	u.status = User::STATUS_LOCKED if user.enabled != 1
-    	u.admin = true if user.access_level == 90
-    	next unless u.save!
-    	users_migrated += 1
-    	users_map[user.id] = u.id
-    	print '.'
-      end
-      puts
-    
-      # Projects
-      print "Migrating projects"
-      Project.destroy_all
-      projects_map = {}
-      versions_map = {}
-      categories_map = {}
-      MantisProject.find(:all).each do |project|
-    	p = Project.new :name => encode(project.name), 
-                        :description => encode(project.description)
-    	p.identifier = project.identifier
-    	next unless p.save
-    	projects_map[project.id] = p.id
-    	p.enabled_module_names = ['issue_tracking', 'news', 'wiki']
-        p.trackers << TRACKER_BUG
-        p.trackers << TRACKER_FEATURE
-    	print '.'
-    	
-    	# Project members
-    	project.members.each do |member|
-          m = Member.new :user => User.find_by_id(users_map[member.user_id]),
-    	                   :roles => [ROLE_MAPPING[member.access_level] || DEFAULT_ROLE]
-    	  m.project = p
-    	  m.save
-    	end	
-    	
-    	# Project versions
-    	project.versions.each do |version|
-          v = Version.new :name => encode(version.version),
-                          :description => encode(version.description),
-                          :effective_date => (version.date_order ? version.date_order.to_date : nil)
-          v.project = p
-          v.save
-          versions_map[version.id] = v.id
-    	end
-    	
-    	# Project categories
-    	project.categories.each do |category|
-          g = IssueCategory.new :name => category.category[0,30]
-          g.project = p
-          g.save
-          categories_map[category.category] = g.id
-    	end
-      end	
-      puts	
-    
-      # Bugs
-      print "Migrating bugs"
-      Issue.destroy_all
-      issues_map = {}
-      keep_bug_ids = (Issue.count == 0)
-      MantisBug.find_each(:batch_size => 200) do |bug|
-        next unless projects_map[bug.project_id] && users_map[bug.reporter_id]
-    	i = Issue.new :project_id => projects_map[bug.project_id], 
-                      :subject => encode(bug.summary),
-                      :description => encode(bug.bug_text.full_description),
-                      :priority => PRIORITY_MAPPING[bug.priority] || DEFAULT_PRIORITY,
-                      :created_on => bug.date_submitted,
-                      :updated_on => bug.last_updated
-    	i.author = User.find_by_id(users_map[bug.reporter_id])
-    	i.category = IssueCategory.find_by_project_id_and_name(i.project_id, bug.category[0,30]) unless bug.category.blank?
-    	i.fixed_version = Version.find_by_project_id_and_name(i.project_id, bug.fixed_in_version) unless bug.fixed_in_version.blank?
-    	i.status = STATUS_MAPPING[bug.status] || DEFAULT_STATUS
-    	i.tracker = (bug.severity == 10 ? TRACKER_FEATURE : TRACKER_BUG)
-    	i.id = bug.id if keep_bug_ids
-    	next unless i.save
-    	issues_map[bug.id] = i.id
-    	print '.'
-      STDOUT.flush
-
-        # Assignee
-        # Redmine checks that the assignee is a project member
-        if (bug.handler_id && users_map[bug.handler_id])
-          i.assigned_to = User.find_by_id(users_map[bug.handler_id])
-          i.save_with_validation(false)
-        end        
-    	
-    	# Bug notes
-    	bug.bug_notes.each do |note|
-    	  next unless users_map[note.reporter_id]
-          n = Journal.new :notes => encode(note.bug_note_text.note),
-                          :created_on => note.date_submitted
-          n.user = User.find_by_id(users_map[note.reporter_id])
-          n.journalized = i
-          n.save
-    	end
-    	
-        # Bug files
-        bug.bug_files.each do |file|
-          a = Attachment.new :created_on => file.date_added
-          a.file = file
-          a.author = User.find :first
-          a.container = i
-          a.save
-        end
-        
-        # Bug monitors
-        bug.bug_monitors.each do |monitor|
-          next unless users_map[monitor.user_id]
-          i.add_watcher(User.find_by_id(users_map[monitor.user_id]))
-        end
-      end
-      
-      # update issue id sequence if needed (postgresql)
-      Issue.connection.reset_pk_sequence!(Issue.table_name) if Issue.connection.respond_to?('reset_pk_sequence!')
-      puts
-      
-      # Bug relationships
-      print "Migrating bug relations"
-      MantisBugRelationship.find(:all).each do |relation|
-        next unless issues_map[relation.source_bug_id] && issues_map[relation.destination_bug_id]
-        r = IssueRelation.new :relation_type => RELATION_TYPE_MAPPING[relation.relationship_type]
-        r.issue_from = Issue.find_by_id(issues_map[relation.source_bug_id])
-        r.issue_to = Issue.find_by_id(issues_map[relation.destination_bug_id])
-        pp r unless r.save
-        print '.'
-        STDOUT.flush
-      end
-      puts
-      
-      # News
-      print "Migrating news"
-      News.destroy_all
-      MantisNews.find(:all, :conditions => 'project_id > 0').each do |news|
-        next unless projects_map[news.project_id]
-        n = News.new :project_id => projects_map[news.project_id],
-                     :title => encode(news.headline[0..59]),
-                     :description => encode(news.body),
-                     :created_on => news.date_posted
-        n.author = User.find_by_id(users_map[news.poster_id])
-        n.save
-        print '.'
-        STDOUT.flush
-      end
-      puts
-      
-      # Custom fields
-      print "Migrating custom fields"
-      IssueCustomField.destroy_all
-      MantisCustomField.find(:all).each do |field|
-        f = IssueCustomField.new :name => field.name[0..29],
-                                 :field_format => CUSTOM_FIELD_TYPE_MAPPING[field.format],
-                                 :min_length => field.length_min,
-                                 :max_length => field.length_max,
-                                 :regexp => field.valid_regexp,
-                                 :possible_values => field.possible_values.split('|'),
-                                 :is_required => field.require_report?
-        next unless f.save
-        print '.'
-        STDOUT.flush
-        # Trackers association
-        f.trackers = Tracker.find :all
-        
-        # Projects association
-        field.projects.each do |project|
-          f.projects << Project.find_by_id(projects_map[project.project_id]) if projects_map[project.project_id]
-        end
-        
-        # Values
-        field.values.each do |value|
-          v = CustomValue.new :custom_field_id => f.id,
-                              :value => value.value
-          v.customized = Issue.find_by_id(issues_map[value.bug_id]) if issues_map[value.bug_id]
-          v.save
-        end unless f.new_record?
-      end
-      puts
-    
-      puts
-      puts "Users:           #{users_migrated}/#{MantisUser.count}"
-      puts "Projects:        #{Project.count}/#{MantisProject.count}"
-      puts "Memberships:     #{Member.count}/#{MantisProjectUser.count}"
-      puts "Versions:        #{Version.count}/#{MantisVersion.count}"
-      puts "Categories:      #{IssueCategory.count}/#{MantisCategory.count}"
-      puts "Bugs:            #{Issue.count}/#{MantisBug.count}"
-      puts "Bug notes:       #{Journal.count}/#{MantisBugNote.count}"
-      puts "Bug files:       #{Attachment.count}/#{MantisBugFile.count}"
-      puts "Bug relations:   #{IssueRelation.count}/#{MantisBugRelationship.count}"
-      puts "Bug monitors:    #{Watcher.count}/#{MantisBugMonitor.count}"
-      puts "News:            #{News.count}/#{MantisNews.count}"
-      puts "Custom fields:   #{IssueCustomField.count}/#{MantisCustomField.count}"
-    end
-  
-    def self.encoding(charset)
-      @ic = Iconv.new('UTF-8', charset)
-    rescue Iconv::InvalidEncoding
-      return false      
-    end
-    
-    def self.establish_connection(params)
-      constants.each do |const|
-        klass = const_get(const)
-        next unless klass.respond_to? 'establish_connection'
-        klass.establish_connection params
-      end
-    end
-    
-    def self.encode(text)
-      @ic.iconv text
-    rescue
-      text
-    end
-  end
-  
-  puts
-  if Redmine::DefaultData::Loader.no_data?
-    puts "Redmine configuration need to be loaded before importing data."
-    puts "Please, run this first:"
-    puts
-    puts "  rake redmine:load_default_data RAILS_ENV=\"#{ENV['RAILS_ENV']}\""
-    exit
-  end
-  
-  puts "WARNING: Your Redmine data will be deleted during this process."
-  print "Are you sure you want to continue ? [y/N] "
-  STDOUT.flush
-  break unless STDIN.gets.match(/^y$/i)
-  
-  # Default Mantis database settings
-  db_params = {:adapter => 'mysql', 
-               :database => 'bugtracker', 
-               :host => 'localhost', 
-               :username => 'root', 
-               :password => '' }
-
-  puts				
-  puts "Please enter settings for your Mantis database"  
-  [:adapter, :host, :database, :username, :password].each do |param|
-    print "#{param} [#{db_params[param]}]: "
-    value = STDIN.gets.chomp!
-    db_params[param] = value unless value.blank?
-  end
-    
-  while true
-    print "encoding [UTF-8]: "
-    STDOUT.flush
-    encoding = STDIN.gets.chomp!
-    encoding = 'UTF-8' if encoding.blank?
-    break if MantisMigrate.encoding encoding
-    puts "Invalid encoding!"
-  end
-  puts
-  
-  # Make sure bugs can refer bugs in other projects
-  Setting.cross_project_issue_relations = 1 if Setting.respond_to? 'cross_project_issue_relations'
-  
-  # Turn off email notifications
-  Setting.notified_events = []
-  
-  MantisMigrate.establish_connection db_params
-  MantisMigrate.migrate
-end
-end
+# Redmine - project management software
+# Copyright (C) 2006-2012  Jean-Philippe Lang
+#
+# 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; either version 2
+# of the License, or (at your option) any later version.
+#
+# 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.
+
+desc 'Mantis migration script'
+
+require 'active_record'
+require 'iconv'
+require 'pp'
+
+namespace :redmine do
+task :migrate_from_mantis => :environment do
+
+  module MantisMigrate
+
+      DEFAULT_STATUS = IssueStatus.default
+      assigned_status = IssueStatus.find_by_position(2)
+      resolved_status = IssueStatus.find_by_position(3)
+      feedback_status = IssueStatus.find_by_position(4)
+      closed_status = IssueStatus.find :first, :conditions => { :is_closed => true }
+      STATUS_MAPPING = {10 => DEFAULT_STATUS,  # new
+                        20 => feedback_status, # feedback
+                        30 => DEFAULT_STATUS,  # acknowledged
+                        40 => DEFAULT_STATUS,  # confirmed
+                        50 => assigned_status, # assigned
+                        80 => resolved_status, # resolved
+                        90 => closed_status    # closed
+                        }
+
+      priorities = IssuePriority.all
+      DEFAULT_PRIORITY = priorities[2]
+      PRIORITY_MAPPING = {10 => priorities[1], # none
+                          20 => priorities[1], # low
+                          30 => priorities[2], # normal
+                          40 => priorities[3], # high
+                          50 => priorities[4], # urgent
+                          60 => priorities[5]  # immediate
+                          }
+
+      TRACKER_BUG = Tracker.find_by_position(1)
+      TRACKER_FEATURE = Tracker.find_by_position(2)
+
+      roles = Role.find(:all, :conditions => {:builtin => 0}, :order => 'position ASC')
+      manager_role = roles[0]
+      developer_role = roles[1]
+      DEFAULT_ROLE = roles.last
+      ROLE_MAPPING = {10 => DEFAULT_ROLE,   # viewer
+                      25 => DEFAULT_ROLE,   # reporter
+                      40 => DEFAULT_ROLE,   # updater
+                      55 => developer_role, # developer
+                      70 => manager_role,   # manager
+                      90 => manager_role    # administrator
+                      }
+
+      CUSTOM_FIELD_TYPE_MAPPING = {0 => 'string', # String
+                                   1 => 'int',    # Numeric
+                                   2 => 'int',    # Float
+                                   3 => 'list',   # Enumeration
+                                   4 => 'string', # Email
+                                   5 => 'bool',   # Checkbox
+                                   6 => 'list',   # List
+                                   7 => 'list',   # Multiselection list
+                                   8 => 'date',   # Date
+                                   }
+
+      RELATION_TYPE_MAPPING = {1 => IssueRelation::TYPE_RELATES,    # related to
+                               2 => IssueRelation::TYPE_RELATES,    # parent of
+                               3 => IssueRelation::TYPE_RELATES,    # child of
+                               0 => IssueRelation::TYPE_DUPLICATES, # duplicate of
+                               4 => IssueRelation::TYPE_DUPLICATES  # has duplicate
+                               }
+
+    class MantisUser < ActiveRecord::Base
+      self.table_name = :mantis_user_table
+
+      def firstname
+        @firstname = realname.blank? ? username : realname.split.first[0..29]
+        @firstname
+      end
+
+      def lastname
+        @lastname = realname.blank? ? '-' : realname.split[1..-1].join(' ')[0..29]
+        @lastname = '-' if @lastname.blank?
+        @lastname
+      end
+
+      def email
+        if read_attribute(:email).match(/^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$/i) &&
+             !User.find_by_mail(read_attribute(:email))
+          @email = read_attribute(:email)
+        else
+          @email = "#{username}@foo.bar"
+        end
+      end
+
+      def username
+        read_attribute(:username)[0..29].gsub(/[^a-zA-Z0-9_\-@\.]/, '-')
+      end
+    end
+
+    class MantisProject < ActiveRecord::Base
+      self.table_name = :mantis_project_table
+      has_many :versions, :class_name => "MantisVersion", :foreign_key => :project_id
+      has_many :categories, :class_name => "MantisCategory", :foreign_key => :project_id
+      has_many :news, :class_name => "MantisNews", :foreign_key => :project_id
+      has_many :members, :class_name => "MantisProjectUser", :foreign_key => :project_id
+
+      def identifier
+        read_attribute(:name).gsub(/[^a-z0-9\-]+/, '-').slice(0, Project::IDENTIFIER_MAX_LENGTH)
+      end
+    end
+
+    class MantisVersion < ActiveRecord::Base
+      self.table_name = :mantis_project_version_table
+
+      def version
+        read_attribute(:version)[0..29]
+      end
+
+      def description
+        read_attribute(:description)[0..254]
+      end
+    end
+
+    class MantisCategory < ActiveRecord::Base
+      self.table_name = :mantis_project_category_table
+    end
+
+    class MantisProjectUser < ActiveRecord::Base
+      self.table_name = :mantis_project_user_list_table
+    end
+
+    class MantisBug < ActiveRecord::Base
+      self.table_name = :mantis_bug_table
+      belongs_to :bug_text, :class_name => "MantisBugText", :foreign_key => :bug_text_id
+      has_many :bug_notes, :class_name => "MantisBugNote", :foreign_key => :bug_id
+      has_many :bug_files, :class_name => "MantisBugFile", :foreign_key => :bug_id
+      has_many :bug_monitors, :class_name => "MantisBugMonitor", :foreign_key => :bug_id
+    end
+
+    class MantisBugText < ActiveRecord::Base
+      self.table_name = :mantis_bug_text_table
+
+      # Adds Mantis steps_to_reproduce and additional_information fields
+      # to description if any
+      def full_description
+        full_description = description
+        full_description += "\n\n*Steps to reproduce:*\n\n#{steps_to_reproduce}" unless steps_to_reproduce.blank?
+        full_description += "\n\n*Additional information:*\n\n#{additional_information}" unless additional_information.blank?
+        full_description
+      end
+    end
+
+    class MantisBugNote < ActiveRecord::Base
+      self.table_name = :mantis_bugnote_table
+      belongs_to :bug, :class_name => "MantisBug", :foreign_key => :bug_id
+      belongs_to :bug_note_text, :class_name => "MantisBugNoteText", :foreign_key => :bugnote_text_id
+    end
+
+    class MantisBugNoteText < ActiveRecord::Base
+      self.table_name = :mantis_bugnote_text_table
+    end
+
+    class MantisBugFile < ActiveRecord::Base
+      self.table_name = :mantis_bug_file_table
+
+      def size
+        filesize
+      end
+
+      def original_filename
+        MantisMigrate.encode(filename)
+      end
+
+      def content_type
+        file_type
+      end
+
+      def read(*args)
+          if @read_finished
+              nil
+          else
+              @read_finished = true
+              content
+          end
+      end
+    end
+
+    class MantisBugRelationship < ActiveRecord::Base
+      self.table_name = :mantis_bug_relationship_table
+    end
+
+    class MantisBugMonitor < ActiveRecord::Base
+      self.table_name = :mantis_bug_monitor_table
+    end
+
+    class MantisNews < ActiveRecord::Base
+      self.table_name = :mantis_news_table
+    end
+
+    class MantisCustomField < ActiveRecord::Base
+      self.table_name = :mantis_custom_field_table
+      set_inheritance_column :none
+      has_many :values, :class_name => "MantisCustomFieldString", :foreign_key => :field_id
+      has_many :projects, :class_name => "MantisCustomFieldProject", :foreign_key => :field_id
+
+      def format
+        read_attribute :type
+      end
+
+      def name
+        read_attribute(:name)[0..29]
+      end
+    end
+
+    class MantisCustomFieldProject < ActiveRecord::Base
+      self.table_name = :mantis_custom_field_project_table
+    end
+
+    class MantisCustomFieldString < ActiveRecord::Base
+      self.table_name = :mantis_custom_field_string_table
+    end
+
+    def self.migrate
+
+      # Users
+      print "Migrating users"
+      User.delete_all "login <> 'admin'"
+      users_map = {}
+      users_migrated = 0
+      MantisUser.find(:all).each do |user|
+        u = User.new :firstname => encode(user.firstname),
+                     :lastname => encode(user.lastname),
+                     :mail => user.email,
+                     :last_login_on => user.last_visit
+        u.login = user.username
+        u.password = 'mantis'
+        u.status = User::STATUS_LOCKED if user.enabled != 1
+        u.admin = true if user.access_level == 90
+        next unless u.save!
+        users_migrated += 1
+        users_map[user.id] = u.id
+        print '.'
+      end
+      puts
+
+      # Projects
+      print "Migrating projects"
+      Project.destroy_all
+      projects_map = {}
+      versions_map = {}
+      categories_map = {}
+      MantisProject.find(:all).each do |project|
+        p = Project.new :name => encode(project.name),
+                        :description => encode(project.description)
+        p.identifier = project.identifier
+        next unless p.save
+        projects_map[project.id] = p.id
+        p.enabled_module_names = ['issue_tracking', 'news', 'wiki']
+        p.trackers << TRACKER_BUG unless p.trackers.include?(TRACKER_BUG)
+        p.trackers << TRACKER_FEATURE unless p.trackers.include?(TRACKER_FEATURE)
+        print '.'
+
+        # Project members
+        project.members.each do |member|
+          m = Member.new :user => User.find_by_id(users_map[member.user_id]),
+                           :roles => [ROLE_MAPPING[member.access_level] || DEFAULT_ROLE]
+          m.project = p
+          m.save
+        end
+
+        # Project versions
+        project.versions.each do |version|
+          v = Version.new :name => encode(version.version),
+                          :description => encode(version.description),
+                          :effective_date => (version.date_order ? version.date_order.to_date : nil)
+          v.project = p
+          v.save
+          versions_map[version.id] = v.id
+        end
+
+        # Project categories
+        project.categories.each do |category|
+          g = IssueCategory.new :name => category.category[0,30]
+          g.project = p
+          g.save
+          categories_map[category.category] = g.id
+        end
+      end
+      puts
+
+      # Bugs
+      print "Migrating bugs"
+      Issue.destroy_all
+      issues_map = {}
+      keep_bug_ids = (Issue.count == 0)
+      MantisBug.find_each(:batch_size => 200) do |bug|
+        next unless projects_map[bug.project_id] && users_map[bug.reporter_id]
+        i = Issue.new :project_id => projects_map[bug.project_id],
+                      :subject => encode(bug.summary),
+                      :description => encode(bug.bug_text.full_description),
+                      :priority => PRIORITY_MAPPING[bug.priority] || DEFAULT_PRIORITY,
+                      :created_on => bug.date_submitted,
+                      :updated_on => bug.last_updated
+        i.author = User.find_by_id(users_map[bug.reporter_id])
+        i.category = IssueCategory.find_by_project_id_and_name(i.project_id, bug.category[0,30]) unless bug.category.blank?
+        i.fixed_version = Version.find_by_project_id_and_name(i.project_id, bug.fixed_in_version) unless bug.fixed_in_version.blank?
+        i.status = STATUS_MAPPING[bug.status] || DEFAULT_STATUS
+        i.tracker = (bug.severity == 10 ? TRACKER_FEATURE : TRACKER_BUG)
+        i.id = bug.id if keep_bug_ids
+        next unless i.save
+        issues_map[bug.id] = i.id
+        print '.'
+        STDOUT.flush
+
+        # Assignee
+        # Redmine checks that the assignee is a project member
+        if (bug.handler_id && users_map[bug.handler_id])
+          i.assigned_to = User.find_by_id(users_map[bug.handler_id])
+          i.save(:validate => false)
+        end
+
+        # Bug notes
+        bug.bug_notes.each do |note|
+          next unless users_map[note.reporter_id]
+          n = Journal.new :notes => encode(note.bug_note_text.note),
+                          :created_on => note.date_submitted
+          n.user = User.find_by_id(users_map[note.reporter_id])
+          n.journalized = i
+          n.save
+        end
+
+        # Bug files
+        bug.bug_files.each do |file|
+          a = Attachment.new :created_on => file.date_added
+          a.file = file
+          a.author = User.find :first
+          a.container = i
+          a.save
+        end
+
+        # Bug monitors
+        bug.bug_monitors.each do |monitor|
+          next unless users_map[monitor.user_id]
+          i.add_watcher(User.find_by_id(users_map[monitor.user_id]))
+        end
+      end
+
+      # update issue id sequence if needed (postgresql)
+      Issue.connection.reset_pk_sequence!(Issue.table_name) if Issue.connection.respond_to?('reset_pk_sequence!')
+      puts
+
+      # Bug relationships
+      print "Migrating bug relations"
+      MantisBugRelationship.find(:all).each do |relation|
+        next unless issues_map[relation.source_bug_id] && issues_map[relation.destination_bug_id]
+        r = IssueRelation.new :relation_type => RELATION_TYPE_MAPPING[relation.relationship_type]
+        r.issue_from = Issue.find_by_id(issues_map[relation.source_bug_id])
+        r.issue_to = Issue.find_by_id(issues_map[relation.destination_bug_id])
+        pp r unless r.save
+        print '.'
+        STDOUT.flush
+      end
+      puts
+
+      # News
+      print "Migrating news"
+      News.destroy_all
+      MantisNews.find(:all, :conditions => 'project_id > 0').each do |news|
+        next unless projects_map[news.project_id]
+        n = News.new :project_id => projects_map[news.project_id],
+                     :title => encode(news.headline[0..59]),
+                     :description => encode(news.body),
+                     :created_on => news.date_posted
+        n.author = User.find_by_id(users_map[news.poster_id])
+        n.save
+        print '.'
+        STDOUT.flush
+      end
+      puts
+
+      # Custom fields
+      print "Migrating custom fields"
+      IssueCustomField.destroy_all
+      MantisCustomField.find(:all).each do |field|
+        f = IssueCustomField.new :name => field.name[0..29],
+                                 :field_format => CUSTOM_FIELD_TYPE_MAPPING[field.format],
+                                 :min_length => field.length_min,
+                                 :max_length => field.length_max,
+                                 :regexp => field.valid_regexp,
+                                 :possible_values => field.possible_values.split('|'),
+                                 :is_required => field.require_report?
+        next unless f.save
+        print '.'
+        STDOUT.flush
+        # Trackers association
+        f.trackers = Tracker.find :all
+
+        # Projects association
+        field.projects.each do |project|
+          f.projects << Project.find_by_id(projects_map[project.project_id]) if projects_map[project.project_id]
+        end
+
+        # Values
+        field.values.each do |value|
+          v = CustomValue.new :custom_field_id => f.id,
+                              :value => value.value
+          v.customized = Issue.find_by_id(issues_map[value.bug_id]) if issues_map[value.bug_id]
+          v.save
+        end unless f.new_record?
+      end
+      puts
+
+      puts
+      puts "Users:           #{users_migrated}/#{MantisUser.count}"
+      puts "Projects:        #{Project.count}/#{MantisProject.count}"
+      puts "Memberships:     #{Member.count}/#{MantisProjectUser.count}"
+      puts "Versions:        #{Version.count}/#{MantisVersion.count}"
+      puts "Categories:      #{IssueCategory.count}/#{MantisCategory.count}"
+      puts "Bugs:            #{Issue.count}/#{MantisBug.count}"
+      puts "Bug notes:       #{Journal.count}/#{MantisBugNote.count}"
+      puts "Bug files:       #{Attachment.count}/#{MantisBugFile.count}"
+      puts "Bug relations:   #{IssueRelation.count}/#{MantisBugRelationship.count}"
+      puts "Bug monitors:    #{Watcher.count}/#{MantisBugMonitor.count}"
+      puts "News:            #{News.count}/#{MantisNews.count}"
+      puts "Custom fields:   #{IssueCustomField.count}/#{MantisCustomField.count}"
+    end
+
+    def self.encoding(charset)
+      @ic = Iconv.new('UTF-8', charset)
+    rescue Iconv::InvalidEncoding
+      return false
+    end
+
+    def self.establish_connection(params)
+      constants.each do |const|
+        klass = const_get(const)
+        next unless klass.respond_to? 'establish_connection'
+        klass.establish_connection params
+      end
+    end
+
+    def self.encode(text)
+      @ic.iconv text
+    rescue
+      text
+    end
+  end
+
+  puts
+  if Redmine::DefaultData::Loader.no_data?
+    puts "Redmine configuration need to be loaded before importing data."
+    puts "Please, run this first:"
+    puts
+    puts "  rake redmine:load_default_data RAILS_ENV=\"#{ENV['RAILS_ENV']}\""
+    exit
+  end
+
+  puts "WARNING: Your Redmine data will be deleted during this process."
+  print "Are you sure you want to continue ? [y/N] "
+  STDOUT.flush
+  break unless STDIN.gets.match(/^y$/i)
+
+  # Default Mantis database settings
+  db_params = {:adapter => 'mysql2',
+               :database => 'bugtracker',
+               :host => 'localhost',
+               :username => 'root',
+               :password => '' }
+
+  puts
+  puts "Please enter settings for your Mantis database"
+  [:adapter, :host, :database, :username, :password].each do |param|
+    print "#{param} [#{db_params[param]}]: "
+    value = STDIN.gets.chomp!
+    db_params[param] = value unless value.blank?
+  end
+
+  while true
+    print "encoding [UTF-8]: "
+    STDOUT.flush
+    encoding = STDIN.gets.chomp!
+    encoding = 'UTF-8' if encoding.blank?
+    break if MantisMigrate.encoding encoding
+    puts "Invalid encoding!"
+  end
+  puts
+
+  # Make sure bugs can refer bugs in other projects
+  Setting.cross_project_issue_relations = 1 if Setting.respond_to? 'cross_project_issue_relations'
+
+  # Turn off email notifications
+  Setting.notified_events = []
+
+  MantisMigrate.establish_connection db_params
+  MantisMigrate.migrate
+end
+end