--- /dev/null
- subs = s.gsub(/\b(to|from):(\S+)\b/) do
+require 'ferret'
+
+module Redwood
+
+class FerretIndex < BaseIndex
+
++ HookManager.register "custom-search", <<EOS
++Executes before a string search is applied to the index,
++returning a new search string.
++Variables:
++ subs: The string being searched. Be careful about shadowing:
++ this variable is actually a method, so use a temporary variable
++ or explicitly call self.subs; the substitutions in index.rb
++ don't actually work.
++EOS
++
+ def initialize dir=BASE_DIR
+ super
+
+ @index_mutex = Monitor.new
+ wsa = Ferret::Analysis::WhiteSpaceAnalyzer.new false
+ sa = Ferret::Analysis::StandardAnalyzer.new [], true
+ @analyzer = Ferret::Analysis::PerFieldAnalyzer.new wsa
+ @analyzer[:body] = sa
+ @analyzer[:subject] = sa
+ @qparser ||= Ferret::QueryParser.new :default_field => :body, :analyzer => @analyzer, :or_default => false
+ end
+
+ def load_index dir=File.join(@dir, "ferret")
+ if File.exists? dir
+ Redwood::log "loading index..."
+ @index_mutex.synchronize do
+ @index = Ferret::Index::Index.new(:path => dir, :analyzer => @analyzer, :id_field => 'message_id')
+ Redwood::log "loaded index of #{@index.size} messages"
+ end
+ else
+ Redwood::log "creating index..."
+ @index_mutex.synchronize do
+ field_infos = Ferret::Index::FieldInfos.new :store => :yes
+ field_infos.add_field :message_id, :index => :untokenized
+ field_infos.add_field :source_id
+ field_infos.add_field :source_info
+ field_infos.add_field :date, :index => :untokenized
+ field_infos.add_field :body
+ field_infos.add_field :label
+ field_infos.add_field :attachments
+ field_infos.add_field :subject
+ field_infos.add_field :from
+ field_infos.add_field :to
+ field_infos.add_field :refs
+ field_infos.add_field :snippet, :index => :no, :term_vector => :no
+ field_infos.create_index dir
+ @index = Ferret::Index::Index.new(:path => dir, :analyzer => @analyzer, :id_field => 'message_id')
+ end
+ end
+ end
+
+ def sync_message m, opts={}
+ entry = @index[m.id]
+
+ raise "no source info for message #{m.id}" unless m.source && m.source_info
+
+ source_id = if m.source.is_a? Integer
+ m.source
+ else
+ m.source.id or raise "unregistered source #{m.source} (id #{m.source.id.inspect})"
+ end
+
+ snippet = if m.snippet_contains_encrypted_content? && $config[:discard_snippets_from_encrypted_messages]
+ ""
+ else
+ m.snippet
+ end
+
+ ## write the new document to the index. if the entry already exists in the
+ ## index, reuse it (which avoids having to reload the entry from the source,
+ ## which can be quite expensive for e.g. large threads of IMAP actions.)
+ ##
+ ## exception: if the index entry belongs to an earlier version of the
+ ## message, use everything from the new message instead, but union the
+ ## flags. this allows messages sent to mailing lists to have their header
+ ## updated and to have flags set properly.
+ ##
+ ## minor hack: messages in sources with lower ids have priority over
+ ## messages in sources with higher ids. so messages in the inbox will
+ ## override everyone, and messages in the sent box will be overridden
+ ## by everyone else.
+ ##
+ ## written in this manner to support previous versions of the index which
+ ## did not keep around the entry body. upgrading is thus seamless.
+ entry ||= {}
+ labels = m.labels.uniq # override because this is the new state, unless...
+
+ ## if we are a later version of a message, ignore what's in the index,
+ ## but merge in the labels.
+ if entry[:source_id] && entry[:source_info] && entry[:label] &&
+ ((entry[:source_id].to_i > source_id) || (entry[:source_info].to_i < m.source_info))
+ labels = (entry[:label].symbolistize + m.labels).uniq
+ #Redwood::log "found updated version of message #{m.id}: #{m.subj}"
+ #Redwood::log "previous version was at #{entry[:source_id].inspect}:#{entry[:source_info].inspect}, this version at #{source_id.inspect}:#{m.source_info.inspect}"
+ #Redwood::log "merged labels are #{labels.inspect} (index #{entry[:label].inspect}, message #{m.labels.inspect})"
+ entry = {}
+ end
+
+ ## if force_overwite is true, ignore what's in the index. this is used
+ ## primarily by sup-sync to force index updates.
+ entry = {} if opts[:force_overwrite]
+
+ d = {
+ :message_id => m.id,
+ :source_id => source_id,
+ :source_info => m.source_info,
+ :date => (entry[:date] || m.date.to_indexable_s),
+ :body => (entry[:body] || m.indexable_content),
+ :snippet => snippet, # always override
+ :label => labels.uniq.join(" "),
+ :attachments => (entry[:attachments] || m.attachments.uniq.join(" ")),
+
+ ## always override :from and :to.
+ ## older versions of Sup would often store the wrong thing in the index
+ ## (because they were canonicalizing email addresses, resulting in the
+ ## wrong name associated with each.) the correct address is read from
+ ## the original header when these messages are opened in thread-view-mode,
+ ## so this allows people to forcibly update the address in the index by
+ ## marking those threads for saving.
+ :from => (m.from ? m.from.indexable_content : ""),
+ :to => (m.to + m.cc + m.bcc).map { |x| x.indexable_content }.join(" "),
+
+ :subject => (entry[:subject] || wrap_subj(Message.normalize_subj(m.subj))),
+ :refs => (entry[:refs] || (m.refs + m.replytos).uniq.join(" ")),
+ }
+
+ @index_mutex.synchronize do
+ @index.delete m.id
+ @index.add_document d
+ end
+ end
+
+ def save_index fn=File.join(@dir, "ferret")
+ # don't have to do anything, apparently
+ end
+
+ def contains_id? id
+ @index_mutex.synchronize { @index.search(Ferret::Search::TermQuery.new(:message_id, id)).total_hits > 0 }
+ end
+
+ def size
+ @index_mutex.synchronize { @index.size }
+ end
+
+ EACH_BY_DATE_NUM = 100
+ def each_id_by_date query={}
+ return if empty? # otherwise ferret barfs ###TODO: remove this once my ferret patch is accepted
+ ferret_query = build_ferret_query query
+ offset = 0
+ while true
+ limit = (query[:limit])? [EACH_BY_DATE_NUM, query[:limit] - offset].min : EACH_BY_DATE_NUM
+ results = @index_mutex.synchronize { @index.search ferret_query, :sort => "date DESC", :limit => limit, :offset => offset }
+ Redwood::log "got #{results.total_hits} results for query (offset #{offset}) #{ferret_query.inspect}"
+ results.hits.each do |hit|
+ yield @index_mutex.synchronize { @index[hit.doc][:message_id] }, lambda { build_message hit.doc }
+ end
+ break if query[:limit] and offset >= query[:limit] - limit
+ break if offset >= results.total_hits - limit
+ offset += limit
+ end
+ end
+
+ def num_results_for query={}
+ return 0 if empty? # otherwise ferret barfs ###TODO: remove this once my ferret patch is accepted
+ ferret_query = build_ferret_query query
+ @index_mutex.synchronize { @index.search(ferret_query, :limit => 1).total_hits }
+ end
+
+ SAME_SUBJECT_DATE_LIMIT = 7
+ MAX_CLAUSES = 1000
+ def each_message_in_thread_for m, opts={}
+ #Redwood::log "Building thread for #{m.id}: #{m.subj}"
+ messages = {}
+ searched = {}
+ num_queries = 0
+
+ pending = [m.id]
+ if $config[:thread_by_subject] # do subject queries
+ date_min = m.date - (SAME_SUBJECT_DATE_LIMIT * 12 * 3600)
+ date_max = m.date + (SAME_SUBJECT_DATE_LIMIT * 12 * 3600)
+
+ q = Ferret::Search::BooleanQuery.new true
+ sq = Ferret::Search::PhraseQuery.new(:subject)
+ wrap_subj(Message.normalize_subj(m.subj)).split.each do |t|
+ sq.add_term t
+ end
+ q.add_query sq, :must
+ q.add_query Ferret::Search::RangeQuery.new(:date, :>= => date_min.to_indexable_s, :<= => date_max.to_indexable_s), :must
+
+ q = build_ferret_query :qobj => q
+
+ p1 = @index_mutex.synchronize { @index.search(q).hits.map { |hit| @index[hit.doc][:message_id] } }
+ Redwood::log "found #{p1.size} results for subject query #{q}"
+
+ p2 = @index_mutex.synchronize { @index.search(q.to_s, :limit => :all).hits.map { |hit| @index[hit.doc][:message_id] } }
+ Redwood::log "found #{p2.size} results in string form"
+
+ pending = (pending + p1 + p2).uniq
+ end
+
+ until pending.empty? || (opts[:limit] && messages.size >= opts[:limit])
+ q = Ferret::Search::BooleanQuery.new true
+ # this disappeared in newer ferrets... wtf.
+ # q.max_clause_count = 2048
+
+ lim = [MAX_CLAUSES / 2, pending.length].min
+ pending[0 ... lim].each do |id|
+ searched[id] = true
+ q.add_query Ferret::Search::TermQuery.new(:message_id, id), :should
+ q.add_query Ferret::Search::TermQuery.new(:refs, id), :should
+ end
+ pending = pending[lim .. -1]
+
+ q = build_ferret_query :qobj => q
+
+ num_queries += 1
+ killed = false
+ @index_mutex.synchronize do
+ @index.search_each(q, :limit => :all) do |docid, score|
+ break if opts[:limit] && messages.size >= opts[:limit]
+ if @index[docid][:label].split(/\s+/).include?("killed") && opts[:skip_killed]
+ killed = true
+ break
+ end
+ mid = @index[docid][:message_id]
+ unless messages.member?(mid)
+ #Redwood::log "got #{mid} as a child of #{id}"
+ messages[mid] ||= lambda { build_message docid }
+ refs = @index[docid][:refs].split
+ pending += refs.select { |id| !searched[id] }
+ end
+ end
+ end
+ end
+
+ if killed
+ Redwood::log "thread for #{m.id} is killed, ignoring"
+ false
+ else
+ Redwood::log "ran #{num_queries} queries to build thread of #{messages.size} messages for #{m.id}: #{m.subj}" if num_queries > 0
+ messages.each { |mid, builder| yield mid, builder }
+ true
+ end
+ end
+
+ ## builds a message object from a ferret result
+ def build_message docid
+ @index_mutex.synchronize do
+ doc = @index[docid] or return
+
+ source = SourceManager[doc[:source_id].to_i]
+ raise "invalid source #{doc[:source_id]}" unless source
+
+ #puts "building message #{doc[:message_id]} (#{source}##{doc[:source_info]})"
+
+ fake_header = {
+ "date" => Time.at(doc[:date].to_i),
+ "subject" => unwrap_subj(doc[:subject]),
+ "from" => doc[:from],
+ "to" => doc[:to].split.join(", "), # reformat
+ "message-id" => doc[:message_id],
+ "references" => doc[:refs].split.map { |x| "<#{x}>" }.join(" "),
+ }
+
+ m = Message.new :source => source, :source_info => doc[:source_info].to_i,
+ :labels => doc[:label].symbolistize,
+ :snippet => doc[:snippet]
+ m.parse_header fake_header
+ m
+ end
+ end
+
+ def delete id
+ @index_mutex.synchronize { @index.delete id }
+ end
+
+ def load_contacts emails, h={}
+ q = Ferret::Search::BooleanQuery.new true
+ emails.each do |e|
+ qq = Ferret::Search::BooleanQuery.new true
+ qq.add_query Ferret::Search::TermQuery.new(:from, e), :should
+ qq.add_query Ferret::Search::TermQuery.new(:to, e), :should
+ q.add_query qq
+ end
+ q.add_query Ferret::Search::TermQuery.new(:label, "spam"), :must_not
+
+ Redwood::log "contact search: #{q}"
+ contacts = {}
+ num = h[:num] || 20
+ @index_mutex.synchronize do
+ @index.search_each q, :sort => "date DESC", :limit => :all do |docid, score|
+ break if contacts.size >= num
+ #Redwood::log "got message #{docid} to: #{@index[docid][:to].inspect} and from: #{@index[docid][:from].inspect}"
+ f = @index[docid][:from]
+ t = @index[docid][:to]
+
+ if AccountManager.is_account_email? f
+ t.split(" ").each { |e| contacts[Person.from_address(e)] = true }
+ else
+ contacts[Person.from_address(f)] = true
+ end
+ end
+ end
+
+ contacts.keys.compact
+ end
+
+ def each_id query={}
+ ferret_query = build_ferret_query query
+ results = @index_mutex.synchronize { @index.search ferret_query, :limit => (query[:limit] || :all) }
+ results.hits.map { |hit| yield @index[hit.doc][:message_id] }
+ end
+
+ def optimize
+ @index_mutex.synchronize { @index.optimize }
+ end
+
+ def source_for_id id
+ entry = @index[id]
+ return unless entry
+ entry[:source_id].to_i
+ end
+
+ class ParseError < StandardError; end
+
+ ## parse a query string from the user. returns a query object
+ ## that can be passed to any index method with a 'query'
+ ## argument, as well as build_ferret_query.
+ ##
+ ## raises a ParseError if something went wrong.
+ def parse_query s
+ query = {}
+
++ subs = HookManager.run("custom-search", :subs => s) || s
++
++ subs = subs.gsub(/\b(to|from):(\S+)\b/) do
+ field, name = $1, $2
+ if(p = ContactManager.contact_for(name))
+ [field, p.email]
+ elsif name == "me"
+ [field, "(" + AccountManager.user_emails.join("||") + ")"]
+ else
+ [field, name]
+ end.join(":")
+ end
+
+ ## if we see a label:deleted or a label:spam term anywhere in the query
+ ## string, we set the extra load_spam or load_deleted options to true.
+ ## bizarre? well, because the query allows arbitrary parenthesized boolean
+ ## expressions, without fully parsing the query, we can't tell whether
+ ## the user is explicitly directing us to search spam messages or not.
+ ## e.g. if the string is -(-(-(-(-label:spam)))), does the user want to
+ ## search spam messages or not?
+ ##
+ ## so, we rely on the fact that turning these extra options ON turns OFF
+ ## the adding of "-label:deleted" or "-label:spam" terms at the very
+ ## final stage of query processing. if the user wants to search spam
+ ## messages, not adding that is the right thing; if he doesn't want to
+ ## search spam messages, then not adding it won't have any effect.
+ query[:load_spam] = true if subs =~ /\blabel:spam\b/
+ query[:load_deleted] = true if subs =~ /\blabel:deleted\b/
+
+ ## gmail style "is" operator
+ subs = subs.gsub(/\b(is|has):(\S+)\b/) do
+ field, label = $1, $2
+ case label
+ when "read"
+ "-label:unread"
+ when "spam"
+ query[:load_spam] = true
+ "label:spam"
+ when "deleted"
+ query[:load_deleted] = true
+ "label:deleted"
+ else
+ "label:#{$2}"
+ end
+ end
+
+ ## gmail style attachments "filename" and "filetype" searches
+ subs = subs.gsub(/\b(filename|filetype):(\((.+?)\)\B|(\S+)\b)/) do
+ field, name = $1, ($3 || $4)
+ case field
+ when "filename"
+ Redwood::log "filename - translated #{field}:#{name} to attachments:(#{name.downcase})"
+ "attachments:(#{name.downcase})"
+ when "filetype"
+ Redwood::log "filetype - translated #{field}:#{name} to attachments:(*.#{name.downcase})"
+ "attachments:(*.#{name.downcase})"
+ end
+ end
+
+ if $have_chronic
+ subs = subs.gsub(/\b(before|on|in|during|after):(\((.+?)\)\B|(\S+)\b)/) do
+ field, datestr = $1, ($3 || $4)
+ realdate = Chronic.parse datestr, :guess => false, :context => :past
+ if realdate
+ case field
+ when "after"
+ Redwood::log "chronic: translated #{field}:#{datestr} to #{realdate.end}"
+ "date:(>= #{sprintf "%012d", realdate.end.to_i})"
+ when "before"
+ Redwood::log "chronic: translated #{field}:#{datestr} to #{realdate.begin}"
+ "date:(<= #{sprintf "%012d", realdate.begin.to_i})"
+ else
+ Redwood::log "chronic: translated #{field}:#{datestr} to #{realdate}"
+ "date:(<= #{sprintf "%012d", realdate.end.to_i}) date:(>= #{sprintf "%012d", realdate.begin.to_i})"
+ end
+ else
+ raise ParseError, "can't understand date #{datestr.inspect}"
+ end
+ end
+ end
+
+ ## limit:42 restrict the search to 42 results
+ subs = subs.gsub(/\blimit:(\S+)\b/) do
+ lim = $1
+ if lim =~ /^\d+$/
+ query[:limit] = lim.to_i
+ ''
+ else
+ raise ParseError, "non-numeric limit #{lim.inspect}"
+ end
+ end
+
+ begin
+ query[:qobj] = @qparser.parse(subs)
+ query[:text] = s
+ query
+ rescue Ferret::QueryParser::QueryParseException => e
+ raise ParseError, e.message
+ end
+ end
+
+private
+
+ def build_ferret_query query
+ q = Ferret::Search::BooleanQuery.new
+ q.add_query query[:qobj], :must if query[:qobj]
+ labels = ([query[:label]] + (query[:labels] || [])).compact
+ labels.each { |t| q.add_query Ferret::Search::TermQuery.new("label", t.to_s), :must }
+ if query[:participants]
+ q2 = Ferret::Search::BooleanQuery.new
+ query[:participants].each do |p|
+ q2.add_query Ferret::Search::TermQuery.new("from", p.email), :should
+ q2.add_query Ferret::Search::TermQuery.new("to", p.email), :should
+ end
+ q.add_query q2, :must
+ end
+
+ q.add_query Ferret::Search::TermQuery.new("label", "spam"), :must_not unless query[:load_spam] || labels.include?(:spam)
+ q.add_query Ferret::Search::TermQuery.new("label", "deleted"), :must_not unless query[:load_deleted] || labels.include?(:deleted)
+ q.add_query Ferret::Search::TermQuery.new("label", "killed"), :must_not if query[:skip_killed]
+
+ q.add_query Ferret::Search::TermQuery.new("source_id", query[:source_id]), :must if query[:source_id]
+ q
+ end
+
+ def wrap_subj subj; "__START_SUBJECT__ #{subj} __END_SUBJECT__"; end
+ def unwrap_subj subj; subj =~ /__START_SUBJECT__ (.*?) __END_SUBJECT__/ && $1; end
+end
+
+end
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