class Blazer::Adapters::ElasticsearchAdapter

Public Instance Methods

preview_statement() click to toggle source
# File lib/blazer/adapters/elasticsearch_adapter.rb, line 35
def preview_statement
  "SELECT * FROM \"{table}\" LIMIT 10"
end
run_statement(statement, comment) click to toggle source
# File lib/blazer/adapters/elasticsearch_adapter.rb, line 4
def run_statement(statement, comment)
  columns = []
  rows = []
  error = nil

  begin
    response = client.xpack.sql.query(body: {query: "#{statement} /*#{comment}*/"})
    columns = response["columns"].map { |v| v["name"] }
    # Elasticsearch does not differentiate between dates and times
    date_indexes = response["columns"].each_index.select { |i| response["columns"][i]["type"] == "date" }
    if columns.any?
      rows = response["rows"]
      date_indexes.each do |i|
        rows.each do |row|
          row[i] = Time.parse(row[i])
        end
      end
    end
  rescue => e
    error = e.message
  end

  [columns, rows, error]
end
tables() click to toggle source
# File lib/blazer/adapters/elasticsearch_adapter.rb, line 29
def tables
  indices = client.cat.indices(format: "json").map { |v| v["index"] }
  aliases = client.cat.aliases(format: "json").map { |v| v["alias"] }
  (indices + aliases).uniq.sort
end

Protected Instance Methods

client() click to toggle source
# File lib/blazer/adapters/elasticsearch_adapter.rb, line 41
def client
  @client ||= Elasticsearch::Client.new(url: settings["url"])
end