feat: add knowledge size to daily statistics

app/models/daily_statistic.rb

@@ -5,7 +5,7 @@ class DailyStatistic < ApplicationRecord
     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 nodes_count circulating_supply burnt locked_capacity treasury_amount mining_reward
-    deposit_compensation liquidity created_at_unixtimestamp ckb_hodl_wave holder_count
+    deposit_compensation liquidity created_at_unixtimestamp ckb_hodl_wave holder_count knowledge_size
   ).freeze
   MILLISECONDS_IN_DAY = BigDecimal(24 * 60 * 60 * 1000)
   GENESIS_TIMESTAMP = 1573852190812
@@ -239,6 +239,12 @@ def liquidity
     tip_parse_dao.c_i - MarketData::BURN_QUOTA - treasury_amount.to_i
   end
 
+  define_logic :knowledge_size do
+    tip_dao = current_tip_block.dao
+    tip_parse_dao = CkbUtils.parse_dao(tip_dao)
+    tip_parse_dao.u_i - MarketData::BURN_QUOTA * 0.6
+  end
+
   define_logic :circulating_supply do
     MarketData.new(indicator: "circulating_supply", tip_block_number: current_tip_block.number,
                    unit: "shannon").call
@@ -568,6 +574,7 @@ def aggron_first_day?
 #  locked_capacity              :decimal(30, )
 #  ckb_hodl_wave                :jsonb
 #  holder_count                 :integer
+#  knowledge_size               :decimal(30, )
 #
 # Indexes
 #

app/serializers/daily_statistic_serializer.rb

@@ -134,4 +134,8 @@ class DailyStatisticSerializer
   } do |object|
     object.holder_count.to_s
   end
+
+  attribute :knowledge_size, if: Proc.new { |_record, params|
+    params.present? && params[:indicator].include?("knowledge_size")
+  }
 end

app/services/charts/daily_statistic_generator.rb

@@ -32,7 +32,7 @@ def updated_attrs
       }
       others = %i{
         block_timestamp transactions_count addresses_count daily_dao_withdraw
-        average_deposit_time mining_reward
+        average_deposit_time mining_reward knowledge_size
         treasury_amount estimated_apc live_cells_count dead_cells_count avg_hash_rate
         avg_difficulty uncle_rate address_balance_distribution
         total_tx_fee occupied_capacity daily_dao_deposit total_supply block_time_distribution

db/migrate/20241202072604_add_knowledge_size_to_daily_statistics.rb

@@ -0,0 +1,5 @@
+class AddKnowledgeSizeToDailyStatistics < ActiveRecord::Migration[7.0]
+  def change
+    add_column :daily_statistics, :knowledge_size, :decimal, precision: 30
+  end
+end

db/structure.sql

@@ -1512,7 +1512,8 @@ CREATE TABLE public.daily_statistics (
     nodes_count integer,
     locked_capacity numeric(30,0),
     ckb_hodl_wave jsonb,
-    holder_count integer
+    holder_count integer,
+    knowledge_size numeric(30,0)
 );
 
 
@@ -5945,4 +5946,6 @@ INSERT INTO "schema_migrations" (version) VALUES
 ('20240823071323'),
 ('20240823071420'),
 ('20240902025657'),
-('20240904043807');
+('20240904043807'),
+('20241202072604');
+

test/services/charts/daily_statistic_generator_test.rb

@@ -444,6 +444,14 @@ class DailyStatisticGeneratorTest < ActiveSupport::TestCase
       assert_equal total_supply_temp, total_supply
     end
 
+    test "it should get knowledge_size" do
+      tip_dao = @current_tip_block.dao
+      tip_parse_dao = CkbUtils.parse_dao(tip_dao)
+      knowledge_size_temp = tip_parse_dao.u_i - MarketData::BURN_QUOTA * 0.6
+      knowledge_size = Charts::DailyStatisticGenerator.new(@datetime).call.knowledge_size
+      assert_equal knowledge_size_temp, knowledge_size
+    end
+
     test "it should get epoch_length_distribution" do
       max_n = 1700
       ranges = (700..max_n).step(100).map { |n| [n, n + 100] }