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Instance Method Summary collapse

Instance Method Details

#gen_idx_script(idIndex, collname) ⇒ Object 



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# File 'lib/indexes.rb', line 52

def gen_idx_script(idIndex, collname)
  idx_name = idIndex['name']
  idx_spec = JSON.dump(idIndex['key'])
  idx_options = {}
  idIndex.each do |k, v|
    if ['v', 'key'].include? k then
      next
    end
    idx_options[k] = v
  end
  opt_spec = JSON.dump idx_options
  txt = "db.#{collname}.createIndex(#{idx_spec}, #{opt_spec});"
end

#get_indexes_script(uri, db_name = nil, coll_name = nil, outfile) ⇒ Object 



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# File 'lib/indexes.rb', line 4

def get_indexes_script(uri, db_name=nil, coll_name=nil, outfile)
  client = Mongo::Client.new(uri)

  db_list = []
  if not db_name.nil?
    db_list.push db_name
  else
    client.use('admin').command(listDatabases: 1).first['databases'].each do |iter|  # read the name property
      iter_db_name = iter['name']
      db_list.push iter_db_name
    end
  end

  scripts = []

  db_list.each do |iter_db|
    client = client.use iter_db
    scripts.push "db = db.getSiblingDB('#{iter_db}')';"
    if coll_name.nil?
      colls = client.collections
    else
      colls = [
        client[coll_name]
      ]
    end

    colls.each do |coll|
      coll.indexes.each do |idx|

        #Skip the _id index
        l_idx_cols = idx['key'].to_h.keys
        if l_idx_cols.length == 1 and l_idx_cols.first == '_id'
          next
        end

        txt = gen_idx_script idx, coll.name
        scripts.push txt
      end
    end
  end

  txtscripts = scripts.join "\r\n"

  File.open outfile, 'w' do |f|
    f.write txtscripts
  end
end

#get_logs(uri, filename) ⇒ Object 



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# File 'lib/logs.rb', line 4

def get_logs(uri, filename)
  client = Mongo::Client.new(uri)
  cur = client.command getLog: 'global'
  rset = cur.to_a
  # rset = JSON.parse(JSON.dump(rset))
  File.open(filename, 'w') do |file|
    # file.puts rset
    rset.first['log'].each do |iter|
      file.write(JSON.dump(JSON.parse(iter)))
      file.write "\n"
    end
  end
end

#pipeline_to_mongosh_script(infile, outfile) ⇒ Object

Exports the pipeline to a .aggregate() Mongo shell script



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# File 'lib/savedPipeline.rb', line 5

def pipeline_to_mongosh_script(infile, outfile)
  txt = File.read(infile)
  data = JSON.parse(txt)

  ns_split = data['namespace'].split '.', 2
  dbname = ns_split[0]
  collname = ns_split[1]

  the_pipeline = "[\n"
  is_first = true
  data['pipeline'].each do |pstage|
    if not pstage["isEnabled"]
      next
    end

    if is_first
      is_first = false
    else
      the_pipeline += ', '
    end
    stage_txt = pstage['stage']
    stage_txt = stage_txt.gsub("\\r", "\r").gsub("\\n", "\n")
    the_pipeline += "{ #{pstage['stageOperator']}: " + stage_txt + " }"
  end
  the_pipeline += "\n]"

  mongosh_script_out =
"//Query name: #{data['name']}

db.getSiblingDB('#{dbname}').#{collname}.aggregate(
" + the_pipeline + "
, {allowDiskUse: true}
);
"

  File.write(outfile, mongosh_script_out)
end

#pipeline_to_view_mongosh_script(infile, viewname, outfile) ⇒ Object

Exports the pipeline to a createView Mongo shell script



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# File 'lib/savedPipeline.rb', line 45

def pipeline_to_view_mongosh_script(infile, viewname, outfile)
  txt = File.read(infile)
  data = JSON.parse(txt)

  ns_split = data['namespace'].split '.', 2
  dbname = ns_split[0]
  collname = ns_split[1]

  the_pipeline = "[\n"
  is_first = true
  data['pipeline'].each do |pstage|
    if not pstage["isEnabled"]
      next
    end

    if is_first
      is_first = false
    else
      the_pipeline += ', '
    end
    stage_txt = pstage['stage']
    stage_txt = stage_txt.gsub("\\r", "\r").gsub("\\n", "\n")
    the_pipeline += "{ #{pstage['stageOperator']}: " + stage_txt + " }"
  end
  the_pipeline += "\n]"

  mongosh_script_out =
    "//Query name: #{data['name']}

db.getSiblingDB('#{dbname}').createView('#{viewname}', '#{collname}',
" + the_pipeline + "
);
"

  File.write(outfile, mongosh_script_out)
end

#read_config_entry(key) ⇒ Object

Reads a key-value pair from the config file



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# File 'lib/config.rb', line 20

def read_config_entry(key)
  if $has_config.call then
    curr_config = YAML.load(File.read($config_filename))
  else
    return nil
  end

  curr_config[key]
end

#write_config_entry(key, value) ⇒ Object

Write a key-value pair to the config file



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# File 'lib/config.rb', line 7

def write_config_entry(key, value)
  if $has_config.call then
    curr_config = YAML.load(File.read($config_filename))
  else
    curr_config = {}
  end

  curr_config[key] = value

  File.open($config_filename, 'w') { |f| f.write(curr_config.to_yaml) }
end