migrate_from_trac-trac-1.0.patch

Hideyuki KATO, 2020-07-13 02:49

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migrate_from_trac.rake 2020-07-11 21:34:59.000000000 +0900
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require 'active_record'
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require 'pp'
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require 'digest/sha1'
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namespace :redmine do
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  desc 'Trac migration script'
......
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      class ::Time
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        class << self
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          alias :real_now :now
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          alias :real_at :at
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          def now
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            real_now - @fake_diff.to_i
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          end
......
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            @fake_diff = 0
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           res
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          end
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          def at(time)
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            # In Trac ticket #6466, timestamps
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            # were changed from seconds since the epoch
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            # to microseconds since the epoch.  The
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            # Trac database version was bumped to 23 for this.
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            if TracMigrate.database_version > 22
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               Time.real_at(time / 1000000)
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            else
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               Time.real_at(time)
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            end
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          end
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        end
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      end
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      class TracSystem < ActiveRecord::Base
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        self.table_name = :system
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      end
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      class TracComponent < ActiveRecord::Base
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        self.table_name = :component
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      end
......
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      class TracAttachment < ActiveRecord::Base
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        self.table_name = :attachment
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        set_inheritance_column :none
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        self.inheritance_column = :none
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        def time; Time.at(read_attribute(:time)) end
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......
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        end
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      private
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        def sha1(s)                                                                           
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          return Digest::SHA1.hexdigest(s)                                                  
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        end
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        def get_path(ticket_id, filename)                                                     
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          t = sha1(ticket_id.to_s)                                                          
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          f = sha1(filename)                                                                
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          ext = File.extname(filename)                                                      
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          a = [ t[0..2], "/", t, "/", f, ext ]                                              
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          return a.join("")                                                                 
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        end
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        def trac_fullpath
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          attachment_type = read_attribute(:type)
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          #replace exotic characters with their hex representation to avoid invalid filenames
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          trac_file = filename.gsub( /[^a-zA-Z0-9\-_\.!~*']/n ) do |x|
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            codepoint = x.codepoints.to_a[0]
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            sprintf('%%%02x', codepoint)
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          end
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          "#{TracMigrate.trac_attachments_directory}/#{attachment_type}/#{id}/#{trac_file}"
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          attachment_type = read_attribute(:type)                                             
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          ticket_id = read_attribute(:id)                                                     
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          filename  = read_attribute(:filename)                                               
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          path = get_path(id, filename)                                                
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          "#{TracMigrate.trac_attachments_directory}/#{attachment_type}/#{path}"
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        end
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      end
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      class TracTicket < ActiveRecord::Base
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        self.table_name = :ticket
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        set_inheritance_column :none
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        self.inheritance_column = :none
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        # ticket changes: only migrate status changes and comments
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        has_many :ticket_changes, :class_name => "TracTicketChange", :foreign_key => :ticket
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        has_many :customs, :class_name => "TracTicketCustom", :foreign_key => :ticket
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        def attachments
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          TracMigrate::TracAttachment.all(:conditions => ["type = 'ticket' AND id = ?", self.id.to_s])
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          TracMigrate::TracAttachment.where("type = 'ticket' AND id = :id", id: self.id.to_s)
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        end
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        def ticket_type
......
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      class TracWikiPage < ActiveRecord::Base
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        self.table_name = :wiki
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        set_primary_key :name
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        self.primary_key = 'name'
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        def self.columns
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          # Hides readonly Trac field to prevent clash with AR readonly? method (Rails 2.0)
......
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        end
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        def attachments
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          TracMigrate::TracAttachment.all(:conditions => ["type = 'wiki' AND id = ?", self.id.to_s])
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          TracMigrate::TracAttachment.where("type = 'wiki' AND id = :id", id: self.id.to_s)
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        end
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        def time; Time.at(read_attribute(:time)) end
......
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        # Quick database test
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        TracComponent.count
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        lookup_database_version
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        print "Trac database version is: ", database_version, "\n" 
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        migrated_components = 0
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        migrated_milestones = 0
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        migrated_tickets = 0
......
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          p.save
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          v = Version.new :project => @target_project,
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                          :name => encode(milestone.name[0, limit_for(Version, 'name')]),
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                          :name => encode(milestone.name),
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                          :description => nil,
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                          :wiki_page_title => milestone.name.to_s,
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                          :effective_date => milestone.completed
......
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          print '.'
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          STDOUT.flush
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          i = Issue.new :project => @target_project,
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                          :subject => encode(ticket.summary[0, limit_for(Issue, 'subject')]),
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                          :subject => encode(ticket.summary),
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                          :description => convert_wiki_text(encode(ticket.description)),
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                          :priority => PRIORITY_MAPPING[ticket.priority] || DEFAULT_PRIORITY,
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                          :created_on => ticket.time
......
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        puts "Components:      #{migrated_components}/#{TracComponent.count}"
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        puts "Milestones:      #{migrated_milestones}/#{TracMilestone.count}"
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        puts "Tickets:         #{migrated_tickets}/#{TracTicket.count}"
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        puts "Ticket files:    #{migrated_ticket_attachments}/" + TracAttachment.count(:conditions => {:type => 'ticket'}).to_s
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        puts "Ticket files:    #{migrated_ticket_attachments}/" + TracAttachment.where(type: 'ticket').count().to_s
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        puts "Custom values:   #{migrated_custom_values}/#{TracTicketCustom.count}"
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        puts "Wiki edits:      #{migrated_wiki_edits}/#{wiki_edit_count}"
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        puts "Wiki files:      #{migrated_wiki_attachments}/" + TracAttachment.count(:conditions => {:type => 'wiki'}).to_s
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        puts "Wiki files:      #{migrated_wiki_attachments}/" + TracAttachment.where(type: 'wiki').count().to_s
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      end
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      def self.limit_for(klass, attribute)
......
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        @charset = charset
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      end
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      def self.lookup_database_version
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        f = TracSystem.find_by_name("database_version")
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        @@database_version = f.value.to_i
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      end
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      def self.database_version
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        @@database_version
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      end
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      def self.set_trac_directory(path)
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        @@trac_directory = path
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        raise "This directory doesn't exist!" unless File.directory?(path)
......
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      mattr_reader :trac_directory, :trac_adapter, :trac_db_host, :trac_db_port, :trac_db_name, :trac_db_schema, :trac_db_username, :trac_db_password
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      def self.trac_db_path; "#{trac_directory}/db/trac.db" end
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      def self.trac_attachments_directory; "#{trac_directory}/attachments" end
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      def self.trac_attachments_directory; "#{trac_directory}/files/attachments" end
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      def self.target_project_identifier(identifier)
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        project = Project.find_by_identifier(identifier)