feat: add new columns

nodes_distribution and nodes_count

app/models/daily_statistic.rb

@@ -2,7 +2,7 @@ class DailyStatistic < ApplicationRecord
   VALID_INDICATORS = %w(
     transactions_count addresses_count total_dao_deposit live_cells_count dead_cells_count avg_hash_rate avg_difficulty uncle_rate
     total_depositors_count address_balance_distribution total_tx_fee occupied_capacity daily_dao_deposit daily_dao_depositors_count
-    circulation_ratio daily_dao_withdraw average_block_time
+    circulation_ratio daily_dao_withdraw nodes_count
   ).freeze
 end
 
@@ -45,4 +45,6 @@ class DailyStatistic < ApplicationRecord
 #  epoch_time_distribution      :jsonb
 #  epoch_length_distribution    :jsonb
 #  average_block_time           :jsonb
+#  nodes_distribution           :jsonb
+#  nodes_count                  :integer
 #

db/migrate/20200506043401_add_nodes_distribution_to_daily_statistics.rb

@@ -0,0 +1,6 @@
+class AddNodesDistributionToDailyStatistics < ActiveRecord::Migration[6.0]
+  def change
+    add_column :daily_statistics, :nodes_distribution, :jsonb
+    add_column :daily_statistics, :nodes_count, :integer
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2020_04_30_124336) do
+ActiveRecord::Schema.define(version: 2020_05_06_043401) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -207,6 +207,8 @@
     t.jsonb "epoch_time_distribution"
     t.jsonb "epoch_length_distribution"
     t.jsonb "average_block_time"
+    t.jsonb "nodes_distribution"
+    t.integer "nodes_count"
   end
 
   create_table "dao_contracts", force: :cascade do |t|