Class: Mongo3::Connection

Inherits:
Object
  • Object
show all
Defined in:
lib/mongo3/connection.rb

Instance Method Summary collapse

Constructor Details

#initialize(config_file) ⇒ Connection

Returns a new instance of Connection.



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# File 'lib/mongo3/connection.rb', line 9

def initialize( config_file )
  @config_file = config_file
end

Instance Method Details

#build_cltn_tree(parent_id, zone, db_name) ⇒ Object

Show collections



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# File 'lib/mongo3/connection.rb', line 364

def build_cltn_tree( parent_id, zone, db_name ) 
  sub_root = nil
  connect_for( zone ) do |con|
    db        = con.db( db_name )      
    root      = Node.make_node( "home" )
    zone_node  = Node.make_node( zone )
    sub_root  = Node.new( parent_id, db_name )
    root     << zone_node
    zone_node << sub_root
  
    count = 0
    data = { :dyna => false }
    collection_names( db ).each do |cltn_name|
      size = db[cltn_name].count
      node = Node.new( "#{db_name}_#{count}", "#{cltn_name}(#{size})", data.clone )
      sub_root << node
      count += 1
    end
  end
  sub_root
end

#build_db_tree(parent_id, zone) ⇒ Object

Connects to host and spews out all available dbs BOZO !! Need to deal with Auth?



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# File 'lib/mongo3/connection.rb', line 342

def build_db_tree( parent_id, zone )    
  sub_root = nil
  connect_for( zone ) do |con|
    root     = Node.make_node( "home" )
    sub_root = Node.new( parent_id, zone )
  
    root << sub_root
  
    count = 0
    data  = { :dyna => true }
    database_names( con ).each do |db_name|
      db    = con.db( db_name, :strict => true )
      cltns = collection_names( db ).size  
      node  = Node.new( "#{zone}_#{count}", "#{db_name}(#{cltns})", data.clone )
      sub_root << node
      count += 1
    end
  end
  sub_root
end

#build_partial_tree(path_names) ⇒ Object

Build zone tree



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# File 'lib/mongo3/connection.rb', line 261

def build_partial_tree( path_names )
  path_name_tokens = path_names.split( "|" )      
  bm_zone          = path_name_tokens[1]
  bm_cltn          = path_name_tokens.pop if path_name_tokens.size == 4
  bm_db            = path_name_tokens.pop if path_name_tokens.size == 3
  
  root = Node.make_node( "home" )
  
  # iterate thru zones
  adjacencies = {}      
  config.each_pair do |zone, info|
    node = Node.new( zone, zone, :dyna => true )
    root << node
    
    adjs = adjacencies[zone]
    if adjs
      node.mark_master!
      adjs.each { |n| node << n }
    end
    masters = slave?( zone )
    
    unless masters.empty?
      node.mark_slave!     
      masters.each do |master|
        host, port  = master.split( ":" )
        master_zone = zone_for( host, port )
        next unless master_zone
        master_node = root.find( master_zone )
        if master_node
          master_node.mark_master!
          master_node << node
        else
          adjacencies[master_zone] = [] unless adjacencies[master_zone]
          adjacencies[master_zone] << node
        end
      end
    end
            
    next unless node.name == bm_zone
            
    connect_for( zone ) do |con|      
      count = 0
      data  = { :dyna => true }
      database_names( con ).each do |db_name|
        db      = con.db( db_name, :strict => true )
        cltns   = collection_names( db )  
        db_node = Node.new( "#{zone}_#{count}", "#{db_name}(#{cltns.size})", data.clone )
        node << db_node
        count += 1
        if bm_db and db_node.name =~ /^#{bm_db}/
          cltn_count = 0
          data = { :dyna => false }
          cltns.each do |cltn_name|
            size = db[cltn_name].count
            cltn_node = Node.new( "#{db_name}_#{cltn_count}", "#{cltn_name}(#{size})", data.clone )
            db_node << cltn_node
            cltn_count += 1
          end              
        end
      end
    end
  end
  root
end

#build_sub_tree(parent_id, path_names) ⇒ Object

Build an appropriate subtree based on requested item



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# File 'lib/mongo3/connection.rb', line 327

def build_sub_tree( parent_id, path_names )
  path_name_tokens = path_names.split( "|" )
  zone              = path_name_tokens[1]      
        
  if db_request?( path_name_tokens )        
    sub_tree = build_db_tree( parent_id, zone )
  else
    db_name  = path_name_tokens.last        
    sub_tree = build_cltn_tree( parent_id, zone, db_name )
  end
  sub_tree
end

#build_tree ⇒ Object

Build zone tree



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# File 'lib/mongo3/connection.rb', line 210

def build_tree
  root = Node.make_node( "home" )
  
  # iterate thru zones
  adjacencies = {}
  config.each_pair do |zone, info|
    node = Node.new( zone, zone, :dyna => true )
    root << node
    adjs = adjacencies[zone]
    if adjs
      node.mark_master!
      adjs.each { |n| node << n }
    end
    masters = slave?( zone )
    next if masters.empty?

    node.mark_slave!     
    masters.each do |master|
      host, port = master.split( ":" )
      master_zone = zone_for( host, port )
      next unless master_zone
      master_node = root.find( master_zone )
      if master_node
        master_node.mark_master!
        master_node << node
      else
        adjacencies[master_zone] = [] unless adjacencies[master_zone]
        adjacencies[master_zone] << node
      end
    end
  end
  root
end

#clear_cltn(path_names) ⇒ Object 



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# File 'lib/mongo3/connection.rb', line 73

def clear_cltn( path_names )
  path_name_tokens = path_names.split( "|" )
  zone              = path_name_tokens[1]      
  connect_for( zone ) do |con|
    cltn_name = path_name_tokens.pop
    db_name   = path_name_tokens.pop
    db        = con.db( db_name )
    cltn      = db[cltn_name]
    cltn.remove( {} )
  end
end

#create_index(path_names, index, constraints) ⇒ Object 



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# File 'lib/mongo3/connection.rb', line 49

def create_index( path_names, index, constraints )
  path_name_tokens = path_names.split( "|" )
  zone              = path_name_tokens[1]      
  connect_for( zone ) do |con|
    cltn_name = path_name_tokens.pop
    db_name   = path_name_tokens.pop
    db        = con.db( db_name )
    cltn      = db[cltn_name]
    cltn.create_index( index, constraints ? constraints['unique'] == 1 : false )
  end      
end

#delete_row(path_names, id) ⇒ Object 



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# File 'lib/mongo3/connection.rb', line 85

def delete_row( path_names, id )
  path_name_tokens = path_names.split( "|" )
  zone              = path_name_tokens[1]      
  connect_for( zone ) do |con|
    cltn_name = path_name_tokens.pop
    db_name   = path_name_tokens.pop
    db        = con.db( db_name )
    cltn      = db[cltn_name]
    res = cltn.remove( {:_id => Mongo::ObjectID.from_string(id) } )
  end
end

#drop_cltn(path_names) ⇒ Object 



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# File 'lib/mongo3/connection.rb', line 61

def drop_cltn( path_names )
  path_name_tokens = path_names.split( "|" )
  zone              = path_name_tokens[1]      
  connect_for( zone ) do |con|
    cltn_name = path_name_tokens.pop
    db_name   = path_name_tokens.pop
    db        = con.db( db_name )
    cltn      = db[cltn_name]
    cltn.drop
  end
end

#drop_db(path_names) ⇒ Object

drop a db using a db path



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# File 'lib/mongo3/connection.rb', line 14

def drop_db( path_names )
  path_name_tokens = path_names.split( "|" )
  zone              = path_name_tokens[1]
  connect_for( zone ) do |con|
    db_name   = path_name_tokens.pop
    con.drop_database( db_name )
  end
end

#drop_index(path_names, index) ⇒ Object 



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# File 'lib/mongo3/connection.rb', line 37

def drop_index( path_names, index )
  path_name_tokens = path_names.split( "|" )
  zone              = path_name_tokens[1]
  connect_for( zone ) do |con|
    cltn_name = path_name_tokens.pop
    db_name   = path_name_tokens.pop
    db        = con.db( db_name )
    cltn      = db[cltn_name]        
    cltn.drop_index( index )
  end
end

#indexes_for(path_names) ⇒ Object 



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# File 'lib/mongo3/connection.rb', line 23

def indexes_for( path_names )
  path_name_tokens = path_names.split( "|" )
  zone              = path_name_tokens[1]
  indexes          = {}
  connect_for( zone ) do |con|
    cltn_name = path_name_tokens.pop
    db_name   = path_name_tokens.pop
    db        = con.db( db_name )
    cltn      = db[cltn_name]
    indexes   = cltn.index_information
  end
  indexes
end

#landscape ⇒ Object

Fetch the cluster landscape from the config file



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# File 'lib/mongo3/connection.rb', line 205

def landscape
  config
end

#paginate_cltn(path_names, query_params = [{},[]], page = 1, per_page = 10) ⇒ Object 



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# File 'lib/mongo3/connection.rb', line 172

def paginate_cltn( path_names, query_params=[{},[]], page=1, per_page=10 )
  path_name_tokens = path_names.split( "|" )
  zone              = path_name_tokens[1]
  list             = nil
  connect_for( zone ) do |con|
    cltn_name = path_name_tokens.pop
    db_name   = path_name_tokens.pop
    db        = con.db( db_name )
    cltn      = db[cltn_name]          
    count     = cltn.find( query_params.first ).count
    
    list = WillPaginate::Collection.create( page, per_page, count ) do |pager|
      offset = (page-1)*per_page
      sort   = query_params.last.empty? ? [ ['_id', Mongo::DESCENDING] ] : query_params.last
      query  = query_params.first
      
      # Scan for regexes...
      query.each_pair do |k,v|
        if v.is_a?( String ) and v.index( /^\// )
          query[k] = Regexp.new( v.gsub( "/", '' ) )
        end
      end
      results = cltn.find( query, 
        :sort  => sort,
        :skip  => offset, 
        :limit => per_page ).to_a          
      pager.replace( results )
    end        
  end
  list
end

#paginate_db(path_names, page = 1, per_page = 10) ⇒ Object 



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# File 'lib/mongo3/connection.rb', line 146

def paginate_db( path_names, page=1, per_page=10 )
  path_name_tokens = path_names.split( "|" )      
  zone              = path_name_tokens[1]
  list             = nil
  connect_for( zone ) do |con|
    db_name = path_name_tokens.pop
    db      = con.db( db_name )
    cltn    = collection_names(db).sort
    
    list = WillPaginate::Collection.create( page, per_page, cltn.size ) do |pager|
      offset = (page-1)*per_page
      names = cltn[offset..(offset+per_page)]
      cltns = []
      names.each do |name|
        list = db[name]
        row  = OrderedHash.new
        row[:name]  = name
        row[:count] = list.count
        cltns << row
      end          
      pager.replace( cltns ) 
    end        
  end
  list
end

#show(path_names) ⇒ Object 



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# File 'lib/mongo3/connection.rb', line 97

def show( path_names )
  path_name_tokens = path_names.split( "|" )
  info             = OrderedHash.new
  zone             = path_name_tokens[1]

  info[:links] = OrderedHash.new      
  info[:title] = path_name_tokens.last
        
  # If detect slave only show reg info
  slave = slave_zone?( path_name_tokens )
  if path_name_tokens.size == 2 or slave
    connect_for( zone ) do |con|
      info[:links][:users]  = "/users/1" unless slave
      info[:name]           = zone
      info[:host]           = con.host
      info[:users]          = con.db('admin')[Mongo::DB::SYSTEM_USER_COLLECTION].count rescue 0
      info[:port]           = con.port
      info[:databases]      = OrderedHash.new
      con.database_info.sort { |a,b| b[1] <=> a[1] }.each { |e| info[:databases][e[0]] = to_mb( e[1] ) }
      info[:server]         = con.server_info
    end
  # BOZO !! Need to figure out links strategy!
  elsif path_name_tokens.size == 3
    db_name = path_name_tokens.pop
    connect_for( zone ) do |con|          
      db = con.db( db_name )
      info[:links][:manage] = "/databases/1"
      info[:size]           = to_mb( con.database_info[db_name] )
      info[:node]           = db.nodes
      info[:collections]    = collection_names( db ).size
      info[:error]          = db.error
      info[:last_status]    = db.last_status
    end
  elsif path_name_tokens.size == 4        
    cltn_name = path_name_tokens.pop
    db_name   = path_name_tokens.pop
    connect_for( zone ) do |con|
      db      = con.db( db_name )
      cltn    = db[cltn_name]
      indexes = db.index_information( cltn_name )
                
      info[:links][:manage] = "/collections/1"
      info[:size]           = cltn.count
      info[:indexes]        = format_indexes( indexes ) if indexes and !indexes.empty?
    end
  end      
  info
end

#slave?(zone) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mongo3/connection.rb', line 244

def slave?( zone )
  masters = []
  connect_for( zone ) do |con|
    local = con.db( "local", :strict => true )
    return masters unless local
    begin
      sources = local['sources']
      srcs    = sources.find( {}, :fields => [:host] )
      srcs.each{ |src| masters << src['host'] }          
    rescue => boom
      ;
    end
  end
  masters
end