Class: Riddle::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/riddle/client.rb,
lib/riddle/1.10/client.rb,
lib/riddle/0.9.9/client.rb,
lib/riddle/client/filter.rb,
lib/riddle/client/message.rb,
lib/riddle/client/response.rb

Overview

This class was heavily based on the existing Client API by Dmytro Shteflyuk and Alexy Kovyrin. Their code worked fine, I just wanted something a bit more Ruby-ish (ie. lowercase and underscored method names). I also have used a few helper classes, just to neaten things up.

Feel free to use it wherever. Send bug reports, patches, comments and suggestions to pat at freelancing-gods dot com.

Most properties of the client are accessible through attribute accessors, and where relevant use symboles instead of the long constants common in other clients. Some examples:

client.sort_mode  = :extended
client.sort_by    = "birthday DESC"
client.match_mode = :extended

To add a filter, you will need to create a Filter object:

client.filters << Riddle::Client::Filter.new("birthday",
  Time.at(1975, 1, 1).to_i..Time.at(1985, 1, 1).to_i, false)

Defined Under Namespace

Classes: Filter, Message, Response

Constant Summary collapse

Commands = 
{
  :search     => 0, # SEARCHD_COMMAND_SEARCH
  :excerpt    => 1, # SEARCHD_COMMAND_EXCERPT
  :update     => 2, # SEARCHD_COMMAND_UPDATE
  :keywords   => 3, # SEARCHD_COMMAND_KEYWORDS
  :persist    => 4, # SEARCHD_COMMAND_PERSIST
  :status     => 5, # SEARCHD_COMMAND_STATUS
  :query      => 6, # SEARCHD_COMMAND_QUERY
  :flushattrs => 7  # SEARCHD_COMMAND_FLUSHATTRS
}
Versions = 
{
  :search     => 0x113, # VER_COMMAND_SEARCH
  :excerpt    => 0x100, # VER_COMMAND_EXCERPT
  :update     => 0x101, # VER_COMMAND_UPDATE
  :keywords   => 0x100, # VER_COMMAND_KEYWORDS
  :status     => 0x100, # VER_COMMAND_STATUS
  :query      => 0x100, # VER_COMMAND_QUERY
  :flushattrs => 0x100  # VER_COMMAND_FLUSHATTRS
}
Statuses = 
{
  :ok      => 0, # SEARCHD_OK
  :error   => 1, # SEARCHD_ERROR
  :retry   => 2, # SEARCHD_RETRY
  :warning => 3  # SEARCHD_WARNING
}
MatchModes = 
{
  :all        => 0, # SPH_MATCH_ALL
  :any        => 1, # SPH_MATCH_ANY
  :phrase     => 2, # SPH_MATCH_PHRASE
  :boolean    => 3, # SPH_MATCH_BOOLEAN
  :extended   => 4, # SPH_MATCH_EXTENDED
  :fullscan   => 5, # SPH_MATCH_FULLSCAN
  :extended2  => 6  # SPH_MATCH_EXTENDED2
}
RankModes = 
{
  :proximity_bm25 => 0, # SPH_RANK_PROXIMITY_BM25
  :bm25           => 1, # SPH_RANK_BM25
  :none           => 2, # SPH_RANK_NONE
  :wordcount      => 3, # SPH_RANK_WORDCOUNT
  :proximity      => 4, # SPH_RANK_PROXIMITY
  :match_any      => 5, # SPH_RANK_MATCHANY
  :fieldmask      => 6, # SPH_RANK_FIELDMASK
  :sph04          => 7, # SPH_RANK_SPH04
  :total          => 8  # SPH_RANK_TOTAL
}
SortModes = 
{
  :relevance     => 0, # SPH_SORT_RELEVANCE
  :attr_desc     => 1, # SPH_SORT_ATTR_DESC
  :attr_asc      => 2, # SPH_SORT_ATTR_ASC
  :time_segments => 3, # SPH_SORT_TIME_SEGMENTS
  :extended      => 4, # SPH_SORT_EXTENDED
  :expr          => 5  # SPH_SORT_EXPR
}
AttributeTypes = 
{
  :integer    => 1, # SPH_ATTR_INTEGER
  :timestamp  => 2, # SPH_ATTR_TIMESTAMP
  :ordinal    => 3, # SPH_ATTR_ORDINAL
  :bool       => 4, # SPH_ATTR_BOOL
  :float      => 5, # SPH_ATTR_FLOAT
  :bigint     => 6, # SPH_ATTR_BIGINT
  :string     => 7, # SPH_ATTR_STRING
  :multi      => 0x40000000 # SPH_ATTR_MULTI
}
GroupFunctions = 
{
  :day      => 0, # SPH_GROUPBY_DAY
  :week     => 1, # SPH_GROUPBY_WEEK
  :month    => 2, # SPH_GROUPBY_MONTH
  :year     => 3, # SPH_GROUPBY_YEAR
  :attr     => 4, # SPH_GROUPBY_ATTR
  :attrpair => 5  # SPH_GROUPBY_ATTRPAIR
}
FilterTypes = 
{
  :values       => 0, # SPH_FILTER_VALUES
  :range        => 1, # SPH_FILTER_RANGE
  :float_range  => 2  # SPH_FILTER_FLOATRANGE
}

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(servers = nil, port = nil) ⇒ Client

Can instantiate with a specific server and port - otherwise it assumes defaults of localhost and 3312 respectively. All other settings can be accessed and changed via the attribute accessors.



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# File 'lib/riddle/client.rb', line 137

def initialize(servers=nil, port=nil)
  Riddle.version_warning

  servers = Array(servers || "localhost")
  @servers = servers.respond_to?(:shuffle) ? servers.shuffle : servers.sort_by{ rand }
  @port   = port     || 9312
  @socket = nil
  
  reset
  
  @queue = []
end

Instance Attribute Details

#anchor ⇒ Object

Returns the value of attribute anchor.



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# File 'lib/riddle/client.rb', line 118

def anchor
  @anchor
end

#connection ⇒ Object

Returns the value of attribute connection.



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# File 'lib/riddle/client.rb', line 118

def connection
  @connection
end

#cut_off ⇒ Object

Returns the value of attribute cut_off.



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# File 'lib/riddle/client.rb', line 118

def cut_off
  @cut_off
end

#field_weights ⇒ Object

Returns the value of attribute field_weights.



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# File 'lib/riddle/client.rb', line 118

def field_weights
  @field_weights
end

#filters ⇒ Object

Returns the value of attribute filters.



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# File 'lib/riddle/client.rb', line 118

def filters
  @filters
end

#group_by ⇒ Object

Returns the value of attribute group_by.



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# File 'lib/riddle/client.rb', line 118

def group_by
  @group_by
end

#group_clause ⇒ Object

Returns the value of attribute group_clause.



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# File 'lib/riddle/client.rb', line 118

def group_clause
  @group_clause
end

#group_distinct ⇒ Object

Returns the value of attribute group_distinct.



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# File 'lib/riddle/client.rb', line 118

def group_distinct
  @group_distinct
end

#group_function ⇒ Object

Returns the value of attribute group_function.



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# File 'lib/riddle/client.rb', line 118

def group_function
  @group_function
end

#id_range ⇒ Object

Returns the value of attribute id_range.



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# File 'lib/riddle/client.rb', line 118

def id_range
  @id_range
end

#index_weights ⇒ Object

Returns the value of attribute index_weights.



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# File 'lib/riddle/client.rb', line 118

def index_weights
  @index_weights
end

#limit ⇒ Object

Returns the value of attribute limit.



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# File 'lib/riddle/client.rb', line 118

def limit
  @limit
end

#match_mode ⇒ Object

Returns the value of attribute match_mode.



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# File 'lib/riddle/client.rb', line 118

def match_mode
  @match_mode
end

#max_matches ⇒ Object

Returns the value of attribute max_matches.



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# File 'lib/riddle/client.rb', line 118

def max_matches
  @max_matches
end

#max_query_time ⇒ Object

Returns the value of attribute max_query_time.



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# File 'lib/riddle/client.rb', line 118

def max_query_time
  @max_query_time
end

#offset ⇒ Object

Returns the value of attribute offset.



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# File 'lib/riddle/client.rb', line 118

def offset
  @offset
end

#overrides ⇒ Object

Returns the value of attribute overrides.



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# File 'lib/riddle/client.rb', line 118

def overrides
  @overrides
end

#port ⇒ Object

Returns the value of attribute port.



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# File 'lib/riddle/client.rb', line 118

def port
  @port
end

#queue ⇒ Object (readonly)

Returns the value of attribute queue.



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# File 'lib/riddle/client.rb', line 124

def queue
  @queue
end

#rank_mode ⇒ Object

Returns the value of attribute rank_mode.



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# File 'lib/riddle/client.rb', line 118

def rank_mode
  @rank_mode
end

#retry_count ⇒ Object

Returns the value of attribute retry_count.



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# File 'lib/riddle/client.rb', line 118

def retry_count
  @retry_count
end

#retry_delay ⇒ Object

Returns the value of attribute retry_delay.



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# File 'lib/riddle/client.rb', line 118

def retry_delay
  @retry_delay
end

#select ⇒ Object

Returns the value of attribute select.



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# File 'lib/riddle/client.rb', line 118

def select
  @select
end

#servers ⇒ Object

Returns the value of attribute servers.



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# File 'lib/riddle/client.rb', line 118

def servers
  @servers
end

#sort_by ⇒ Object

Returns the value of attribute sort_by.



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# File 'lib/riddle/client.rb', line 118

def sort_by
  @sort_by
end

#sort_mode ⇒ Object

Returns the value of attribute sort_mode.



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# File 'lib/riddle/client.rb', line 118

def sort_mode
  @sort_mode
end

#timeout ⇒ Object

Returns the value of attribute timeout.



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# File 'lib/riddle/client.rb', line 118

def timeout
  @timeout
end

#weights ⇒ Object

Returns the value of attribute weights.



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# File 'lib/riddle/client.rb', line 118

def weights
  @weights
end

Class Method Details

.connection ⇒ Object 



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# File 'lib/riddle/client.rb', line 130

def self.connection
  Thread.current[:riddle_connection]
end

.connection=(value) ⇒ Object 



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# File 'lib/riddle/client.rb', line 126

def self.connection=(value)
  Thread.current[:riddle_connection] = value
end

Instance Method Details

#add_override(attribute, type, values) ⇒ Object 



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# File 'lib/riddle/client.rb', line 462

def add_override(attribute, type, values)
  @overrides[attribute] = {:type => type, :values => values}
end

#append_query(search, index = '*', comments = '') ⇒ Object

Append a query to the queue. This uses the same parameters as the query method.



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# File 'lib/riddle/client.rb', line 214

def append_query(search, index = '*', comments = '')
  @queue << query_message(search, index, comments)
end

#close ⇒ Object 



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# File 'lib/riddle/client.rb', line 476

def close
  close_socket
end

#excerpts(options = {}) ⇒ Object

Build excerpts from search terms (the words) and the text of documents. Excerpts are bodies of text that have the words highlighted. They may also be abbreviated to fit within a word limit.

As part of the options hash, you will need to define:

  • :docs

  • :words

  • :index

Optional settings include:

  • :before_match (defaults to <span class=“match”>)

  • :after_match (defaults to </span>)

  • :chunk_separator (defaults to ‘ &#8230; ’ - which is an HTML ellipsis)

  • :limit (defaults to 256)

  • :around (defaults to 5)

  • :exact_phrase (defaults to false)

  • :single_passage (defaults to false)

The defaults differ from the official PHP client, as I’ve opted for semantic HTML markup.

Example:

client.excerpts(:docs => ["Pat Allan, Pat Cash"], :words => 'Pat', :index => 'pats')
#=> ["<span class=\"match\">Pat</span> Allan, <span class=\"match\">Pat</span> Cash"]

lorem_lipsum = "Lorem ipsum dolor..."

client.excerpts(:docs => ["Pat Allan, #{lorem_lipsum} Pat Cash"], :words => 'Pat', :index => 'pats')
#=> ["<span class=\"match\">Pat</span> Allan, Lorem ipsum dolor sit amet, consectetur adipisicing
       elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua &#8230; . Excepteur 
       sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est 
       laborum. <span class=\"match\">Pat</span> Cash"]

Workflow:

Excerpt creation is completely isolated from searching the index. The nominated index is only used to discover encoding and charset information.

Therefore, the workflow goes:

  1. Do the sphinx query.

  2. Fetch the documents found by sphinx from their repositories.

  3. Pass the documents’ text to excerpts for marking up of matched terms.



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# File 'lib/riddle/client.rb', line 376

def excerpts(options = {})
  options[:index]            ||= '*'
  options[:before_match]     ||= '<span class="match">'
  options[:after_match]      ||= '</span>'
  options[:chunk_separator]  ||= ' &#8230; ' # ellipsis
  options[:limit]            ||= 256
  options[:limit_passages]   ||= 0
  options[:limit_words]      ||= 0
  options[:around]           ||= 5
  options[:exact_phrase]     ||= false
  options[:single_passage]   ||= false
  options[:query_mode]       ||= false
  options[:force_all_words]  ||= false
  options[:start_passage_id] ||= 1
  options[:load_files]       ||= false
  options[:html_strip_mode]  ||= 'index'
  options[:allow_empty]      ||= false
  
  response = Response.new request(:excerpt, excerpts_message(options))
  
  options[:docs].collect { response.next }
end

#flush_attributes ⇒ Object 



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# File 'lib/riddle/client.rb', line 454

def flush_attributes
  response = Response.new request(
    :flushattrs, Message.new
  )
  
  response.next_int
end

#keywords(query, index, return_hits = false) ⇒ Object

Generates a keyword list for a given query. Each keyword is represented by a hash, with keys :tokenised and :normalised. If return_hits is set to true it will also report on the number of hits and documents for each keyword (see :hits and :docs keys respectively).



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# File 'lib/riddle/client.rb', line 421

def keywords(query, index, return_hits = false)
  response = Response.new request(
    :keywords,
    keywords_message(query, index, return_hits)
  )
  
  (0...response.next_int).collect do
    hash = {}
    hash[:tokenised]  = response.next
    hash[:normalised] = response.next
    
    if return_hits
      hash[:docs] = response.next_int
      hash[:hits] = response.next_int
    end
    
    hash
  end
end

#open ⇒ Object 



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# File 'lib/riddle/client.rb', line 466

def open
  open_socket
  
  return if Versions[:search] < 0x116
  
  @socket.send [
    Commands[:persist], 0, 4, 1
  ].pack("nnNN"), 0
end

#query(search, index = '*', comments = '') ⇒ Object

Query the Sphinx daemon - defaulting to all indexes, but you can specify a specific one if you wish. The search parameter should be a string following Sphinx’s expectations.

The object returned from this method is a hash with the following keys:

  • :matches

  • :fields

  • :attributes

  • :attribute_names

  • :words

  • :total

  • :total_found

  • :time

  • :status

  • :warning (if appropriate)

  • :error (if appropriate)

The key :matches returns an array of hashes - the actual search results. Each hash has the document id (:doc), the result weighting (:weight), and a hash of the attributes for the document (:attributes).

The :fields and :attribute_names keys return list of fields and attributes for the documents. The key :attributes will return a hash of attribute name and type pairs, and :words returns a hash of hashes representing the words from the search, with the number of documents and hits for each, along the lines of:

results[:words]["Pat"] #=> {:docs => 12, :hits => 15}

:total, :total_found and :time return the number of matches available, the total number of matches (which may be greater than the maximum available, depending on the number of matches and your sphinx configuration), and the time in milliseconds that the query took to run.

:status is the error code for the query - and if there was a related warning, it will be under the :warning key. Fatal errors will be described under :error.



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# File 'lib/riddle/client.rb', line 326

def query(search, index = '*', comments = '')
  @queue << query_message(search, index, comments)
  self.run.first
end

#reset ⇒ Object

Reset attributes and settings to defaults.



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# File 'lib/riddle/client.rb', line 151

def reset
  # defaults
  @offset         = 0
  @limit          = 20
  @max_matches    = 1000
  @match_mode     = :all
  @sort_mode      = :relevance
  @sort_by        = ''
  @weights        = []
  @id_range       = 0..0
  @filters        = []
  @group_by       = ''
  @group_function = :day
  @group_clause   = '@group desc'
  @group_distinct = ''
  @cut_off        = 0
  @retry_count    = 0
  @retry_delay    = 0
  @anchor         = {}
  # string keys are index names, integer values are weightings
  @index_weights  = {}
  @rank_mode      = :proximity_bm25
  @max_query_time = 0
  # string keys are field names, integer values are weightings
  @field_weights  = {}
  @timeout        = 0
  @overrides      = {}
  @select         = "*"
end

#run ⇒ Object

Run all the queries currently in the queue. This will return an array of results hashes.



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# File 'lib/riddle/client.rb', line 220

def run
  response = Response.new request(:search, @queue)
  
  results = @queue.collect do
    result = {
      :matches         => [],
      :fields          => [],
      :attributes      => {},
      :attribute_names => [],
      :words           => {}
    }

    result[:status] = response.next_int
    case result[:status]
    when Statuses[:warning]
      result[:warning] = response.next
    when Statuses[:error]
      result[:error] = response.next
      next result
    end
    
    result[:fields] = response.next_array

    attributes = response.next_int
    for i in 0...attributes
      attribute_name = response.next
      type           = response.next_int

      result[:attributes][attribute_name] = type
      result[:attribute_names] << attribute_name
    end

    matches   = response.next_int
    is_64_bit = response.next_int
    for i in 0...matches
      doc = is_64_bit > 0 ? response.next_64bit_int : response.next_int
      weight = response.next_int

      result[:matches] << {:doc => doc, :weight => weight, :index => i, :attributes => {}}
      result[:attribute_names].each do |attr|
        result[:matches].last[:attributes][attr] = attribute_from_type(
          result[:attributes][attr], response
        )
      end
    end

    result[:total] = response.next_int.to_i || 0
    result[:total_found] = response.next_int.to_i || 0
    result[:time] = ('%.3f' % (response.next_int / 1000.0)).to_f || 0.0

    words = response.next_int
    for i in 0...words
      word = response.next
      docs = response.next_int
      hits = response.next_int
      result[:words][word] = {:docs => docs, :hits => hits}
    end

    result
  end
  
  @queue.clear
  results
end

#server ⇒ Object

The searchd server to query. Servers are removed from @server after a Timeout::Error is hit to allow for fail-over.



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# File 'lib/riddle/client.rb', line 183

def server
  @servers.first
end

#server=(server) ⇒ Object

Backwards compatible writer to the @servers array.



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# File 'lib/riddle/client.rb', line 188

def server=(server)
  @servers = server.to_a
end

#set_anchor(lat_attr, lat, long_attr, long) ⇒ Object

Set the geo-anchor point - with the names of the attributes that contain the latitude and longitude (in radians), and the reference position. Note that for geocoding to work properly, you must also set match_mode to :extended. To sort results by distance, you will need to set sort_by to ‘@geodist asc’, and sort_mode to extended (as an example). Sphinx expects latitude and longitude to be returned from you SQL source in radians.

Example:

client.set_anchor('lat', -0.6591741, 'long', 2.530770)



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# File 'lib/riddle/client.rb', line 203

def set_anchor(lat_attr, lat, long_attr, long)
  @anchor = {
    :latitude_attribute   => lat_attr,
    :latitude             => lat,
    :longitude_attribute  => long_attr,
    :longitude            => long
  }
end

#status ⇒ Object 



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# File 'lib/riddle/client.rb', line 441

def status
  response = Response.new request(
    :status, Message.new
  )
  
  rows, cols = response.next_int, response.next_int
  
  (0...rows).inject({}) do |hash, row|
    hash[response.next.to_sym] = response.next
    hash
  end
end

#update(index, attributes, values_by_doc) ⇒ Object

Update attributes - first parameter is the relevant index, second is an array of attributes to be updated, and the third is a hash, where the keys are the document ids, and the values are arrays with the attribute values - in the same order as the second parameter.

Example:

client.update('people', ['birthday'], {1 => [Time.at(1982, 20, 8).to_i]})



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# File 'lib/riddle/client.rb', line 408

def update(index, attributes, values_by_doc)
  response = Response.new request(
    :update,
    update_message(index, attributes, values_by_doc)
  )
  
  response.next_int
end