Redmine

# 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.

require 'active_record'

require 'iconv'

require 'pp'

require 'enumerator'

namespace :redmine do

	desc 'Jira migration script'

	task :migrate_from_jira => :environment do

		module JiraMigrate

			priorities = IssuePriority.all

			DEFAULT_PRIORITY = priorities[0]

			DEFAULT_STATUS = IssueStatus.default

			assigned_status = IssueStatus.find_by_name("Assigned")

			resolved_status = IssueStatus.find_by_name("Resolved")

			feedback_status = IssueStatus.find_by_name("Feedback")

			closed_status = IssueStatus.find :first, :conditions => { :is_closed => true }

			STATUS_MAPPING = {'open' => DEFAULT_STATUS,

												'reopened' => feedback_status,

												'resolved' => resolved_status,

												'in progress' => assigned_status,

												'closed' => closed_status

												}

#			TRACKER_BUG = Tracker.find_by_position(1)

#			TRACKER_FEATURE = Tracker.find_by_position(2)

#			TRACKER_TASK = Tracker.find_by_position(4)

			TRACKER_BUG = Tracker.find_by_name("Bug")

			TRACKER_FEATURE = Tracker.find_by_name("Feature")

			TRACKER_TASK = Tracker.find_by_name("Task")

			DEFAULT_TRACKER = TRACKER_BUG

			TRACKER_MAPPING = {'bug' => TRACKER_BUG,

												 'enhancement' => TRACKER_FEATURE,

												 'task' => TRACKER_TASK,

												 'new feature' =>TRACKER_FEATURE

												 }

			DEFAULT_TRACKER = TRACKER_BUG

			PRIORITY_MAPPING = {'trivial' => priorities[0],

													'minor' => priorities[1],

													'major' => priorities[2],

													'critical' => priorities[3],

													'blocker' => priorities[4]

													}

			roles = Role.find(:all, :conditions => {:builtin => 0}, :order => 'position ASC')

			manager_role = roles[0]

			developer_role = roles[1]

			DEFAULT_ROLE = roles.last

			ROLE_MAPPING = {'admin' => manager_role,

											'developer' => developer_role

											}

			class JiraIssue

				TITLE_RX = /^\[([^\]]+)-(\d+)\]\s*(.*)$/o

				attr_reader :node

				def initialize node

					@node = node

				end

				def [] name

					node.elements[name.to_s]

				end

				def method_missing name, *args

					if name.to_s =~ /^[a-z]+$/ and args.empty?

						n = self[name]

						return n ? n.text : nil

					end

					super

				end

				def project_id

					method_missing(:title)[TITLE_RX, 1]

				end

				def issue_id

					method_missing(:title)[TITLE_RX, 2].to_i

				end

				def title

					method_missing(:title)[TITLE_RX, 3]

				end

				def type

					method_missing :type

				end

				def inspect

					"#<#{self.class} project_id=%p issue_id=%d title=%p>" % [project_id, issue_id, title]

				end

			end

			def self.find_or_create_user(username, fullname, project=nil)

				if username == '-1'

					return nil

				end

				u = User.find_by_login(username)

				if !u

					# Create a new user if not found

					mail = username[0,limit_for(User, 'mail')]

					mail = "#{mail}@foo.bar" unless mail.include?("@")

					firstname, lastname = fullname.split ' ', 2

					u = User.new :firstname => firstname[0,limit_for(User, 'firstname')],

											 :lastname => lastname[0,limit_for(User, 'lastname')],

											 :mail => mail.gsub(/[^-@a-z0-9\.]/i, '-')

					u.login = username[0,limit_for(User, 'login')].gsub(/[^a-z0-9_\-@\.]/i, '-')

					u.password = 'jira'

					# finally, a default user is used if the new user is not valid

					u = User.find(:first) unless u.save

				end

				# Make sure he is a member of the project

				if project && !u.member_of?(project)

					roles = [DEFAULT_ROLE]

					roles = [ROLE_MAPPING['admin']] if u.admin

					Member.create(:user => u, :project => project, :roles => roles)

					u.reload

				end

				u

			end

			def self.clean_html html

				text = html.

					# normalize whitespace

					gsub(/\s+/m, ' ').

					# add in line breaks

					gsub(/<br.*?>\s*/i, "\n").

					# remove all tags

					gsub(/<.*?>/, ' ').

					# handle entities

					gsub(/&amp;/, '&').gsub(/&lt;/, '<').gsub(/&gt;/, '>').gsub(/&nbsp;/, ' ').gsub(/&quot;/, '"').

					# clean up

					squeeze(' ').gsub(/ *$/, '').strip

#				puts "cleaned html from #{html.inspect} to #{text.inspect}"

				text

			end

			def self.migrate

				migrated_projects = 0

				migrated_components = 0

				migrated_issues = 0

				open issue_xml do |file|

					doc = REXML::Document.new file

					item_nodes = doc.elements.to_enum :each, '/rss/channel/item'

					issues = item_nodes.map { |item_node| JiraIssue.new item_node }

					issues_by_project = issues.group_by { |issue| issue.project_id }

					# Projects

					print "Migrating projects"

					project_from_project_id = {}

					issues_by_project.keys.sort.each do |project_id|

						print '.'

						STDOUT.flush

						identifier = project_id.downcase #+ '-' + @target_project.id.to_s

						project = Project.find_by_identifier(identifier)

						if !project

							# create the target project

							project = Project.new :name => identifier.humanize,

																		:description => "Imported project from jira (#{identifier.upcase})." #identifier.humanize

							project.identifier = identifier

							puts "Unable to create a sub project with identifier '#{identifier}'!" unless project.save

							project.move_to_child_of(@target_project.id)

							# enable issues for the created project

							project.enabled_module_names = ['issue_tracking']

						end

						project.trackers << TRACKER_BUG

						project.trackers << TRACKER_FEATURE

						project.trackers << TRACKER_TASK

						project_from_project_id[project_id] = project

						migrated_projects += 1

					end

					puts

					# Components

					print "Migrating components"

					component_from_project_and_name = {}

					issues_by_project.each do |project_id, project_issues|

						components = project_issues.map { |issue| issue.component }.flatten.uniq.compact

						components.each do |component|

							print '.'

							STDOUT.flush

							c = IssueCategory.new :project => project_from_project_id[project_id],

																		:name => encode(component[0, limit_for(IssueCategory, 'name')])

							next unless c.save

							component_from_project_and_name[[project_id, component]] = c

							migrated_components += 1

						end

					end

					puts

#{:status=>["Open", "Closed", "In Progress", "Resolved"]}

#{:priority=>["High", "Critical", "Medium"]}

#{:type=>["Bug", "Task", "Enhancement", "New Feature"]}

					#p :status => issues.map { |i| i.status }.uniq

					#p :priority => issues.map { |i| i.priority }.uniq

					#p :type => issues.map { |i| i.method_missing(:type) }.uniq

					# Issues

					print "Migrating issues "

					issues_by_project.each do |project_id, project_issues|

						project = project_from_project_id[project_id]

						project_issues.each do |issue|

							print '.'

							STDOUT.flush

							i = Issue.new :project => project,

														:subject => encode(issue.title[0, limit_for(Issue, 'subject')]),

														:description => clean_html(issue.description || issue.title), #convert_wiki_text(encode(ticket.description)),

														:priority => PRIORITY_MAPPING[issue.priority.to_s.downcase] || DEFAULT_PRIORITY,

														:created_on => Time.parse(issue.created),

														:updated_on => Time.parse(issue.updated)

							i.status = STATUS_MAPPING[issue.status.to_s.downcase] || DEFAULT_STATUS

							i.tracker = TRACKER_MAPPING[issue.type.to_s.downcase] || DEFAULT_TRACKER

							if reporter = issue['reporter']

								i.author = find_or_create_user reporter.attributes['username'], reporter.text

							end

							i.category = component_from_project_and_name[[project_id, issue.component]] if issue.component

							i.save!

							# Assignee

							if assignee = issue['assignee']

								i.assigned_to = find_or_create_user assignee.attributes['username'], assignee.text, project

								i.save

							end

							# force the issue update date back. it gets overwritten on save time.

							Issue.connection.execute <<-end

								update issues set updated_on = '#{Time.parse(issue.updated).to_s :db}' where id = #{i.id}

							end

							migrated_issues += 1

							# Comments

							if comments = issue.node.elements['comments']

								last_comment = '1'

								comments.elements.to_a('.//comment').each do |comment|

									author, created = comment.attributes['author'], comment.attributes['created']

									comment_text = clean_html comment.text

									n = Journal.new :notes => comment_text,

																	:created_on => DateTime.parse(created)

									n.user = find_or_create_user(author, "#{author.capitalize} -")

									n.journalized = i

									n.save unless n.details.empty? && n.notes.blank?

								end

							end

						end

					end

					puts

					puts

					puts "Projects:        #{migrated_projects}/#{issues_by_project.keys.length}"

					puts "Components:      #{migrated_components}/#{migrated_components}" # hmmm

					puts "Issues:          #{migrated_issues}/#{issues.length}"

				end

			end

			def self.limit_for(klass, attribute)

				klass.columns_hash[attribute.to_s].limit

			end

			def self.encoding(charset)

				@ic = Iconv.new('UTF-8', charset)

			rescue Iconv::InvalidEncoding

				puts "Invalid encoding!"

				return false

			end

      def self.set_issue_xml file

        @@issue_xml = file

      end

      mattr_reader :issue_xml

			def self.target_project_identifier(identifier)

				project = Project.find_by_identifier(identifier)

				if !project

					# create the target project

#					project = Project.new :name => identifier.humanize,

#																:description => identifier.humanize

					project = Project.new :name => 'Jira Import',

																:description => 'All issues imported from jira.'

					# project.parent_id

					project.identifier = identifier

					puts "Unable to create a project with identifier '#{identifier}'!" unless project.save

					# enable issues for the created project

					project.enabled_module_names = ['issue_tracking']

				end        

				#project.trackers << TRACKER_BUG

				#project.trackers << TRACKER_FEATURE          

				@target_project = project.new_record? ? nil : project

			end

		private

			def self.encode(text)

				@ic.iconv text

			rescue

				text

			end

		end

		puts

		puts "WARNING: a new project will be added to Redmine during this process."

		print "Are you sure you want to continue ? [y/N] "

		break unless STDIN.gets.match(/^y$/i)  

		puts

		def prompt(text, options = {}, &block)

			default = options[:default] || ''

			while true

				print "#{text} [#{default}]: "

				value = STDIN.gets.chomp!

				value = default if value.blank?

				break if yield value

			end

		end

		prompt('Jira issue xml file', :default => 'SearchRequest.xml') {|file| JiraMigrate.set_issue_xml file}

    prompt('Target project identifier') {|identifier| JiraMigrate.target_project_identifier identifier}

		puts

		JiraMigrate.migrate

	end

end