feat: 🚧 begin work on a proper Timeseries table

lib/timeseries/hoarder.rb

@@ -2,6 +2,8 @@
 
 require_relative "hoarder/version"
 
+require_relative 'hoarder/TimeseriesDatabase.rb'
+
 module Timeseries
   module Hoarder
     class Error < StandardError; end

lib/timeseries/hoarder/TimeseriesDatabase.rb

@@ -2,6 +2,7 @@
 require 'pg'
 
 require_relative 'CachingTable.rb'
+require_relative 'TimeseriesTable.rb'
 
 module Timeseries
 	module Hoarder
@@ -18,6 +19,14 @@ module Timeseries
 				@pg.exec("CREATE SCHEMA IF NOT EXISTS ts_hoarder")
 
 				@data_sources = CachingTable.new(self, 'sources', 'source')
+
+				@series = {}
+			end
+
+			def add_timeseries(name, **opts)
+				return @series[name] if @series.include? name
+
+				new_series = SeriesTable.new(self, name, **opts)
 			end
 		end
 	end

lib/timeseries/hoarder/TimeseriesTable.rb

@@ -0,0 +1,36 @@
+
+require_relative 'Table.rb'
+require_relative 'CachingTable.rb'
+
+module Timeseries
+    module Hoarder
+        class SeriesTable < Table
+            def initialize(db, name, **opts)
+                @chunk_time = opts[:chunk_time] || '3h'
+                @compress_chunk_time = opts[:compress_chunk_time] || '24h'
+
+                @name = name
+                @tags = CachingTable.new(db, name + '_tags')
+
+                super(db, name, 'ts_hoarder')
+            end
+
+            def table_creation
+                @pg.exec("CREATE TABLE #{@table_id} ( time TIMESTAMPTZ NOT NULL, source_id INTEGER NOT NULL, tags_id INTEGER NOT NULL, value DOUBLE PRECISION NOT NULL)")
+                
+                @pg.exec_params("SELECT create_hypertable('#{@table_schema}.#{@table_name}', 'time', chunk_time_interval => $1::interval)", [@chunk_time])
+                @pg.exec_params("ALTER TABLE #{@table_id} SET (timescaledb.compress, timescaledb.compress_segmentby = 'source_id, tags_id', timescaledb.compress_chunk_time_interval='#{@compress_chunk_time}')")
+
+                view_sql = <<SQL
+                    CREATE OR REPLACE VIEW #{@name} AS
+                        SELECT time, source, tags, value 
+                        FROM #{@table_id}
+                        INNER JOIN #{@tags.table_id} USING ( tags_id )
+                        INNER JOIN #{@db.data_sources.table_id} USING ( source_id )
+SQL
+
+                @pg.exec(view_sql)
+            end
+        end
+    end
+end