Move DB utility functions to the proper module
parent
914cfbd953
commit
6704ce3214
@ -1,4 +1,110 @@
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require "pg"
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require "pg"
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module Invidious::Database
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module Invidious::Database
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extend self
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def check_enum(db, enum_name, struct_type = nil)
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return # TODO
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if !db.query_one?("SELECT true FROM pg_type WHERE typname = $1", enum_name, as: Bool)
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LOGGER.info("check_enum: CREATE TYPE #{enum_name}")
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db.using_connection do |conn|
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conn.as(PG::Connection).exec_all(File.read("config/sql/#{enum_name}.sql"))
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end
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end
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end
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def check_table(db, table_name, struct_type = nil)
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# Create table if it doesn't exist
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begin
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db.exec("SELECT * FROM #{table_name} LIMIT 0")
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rescue ex
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LOGGER.info("check_table: check_table: CREATE TABLE #{table_name}")
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db.using_connection do |conn|
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conn.as(PG::Connection).exec_all(File.read("config/sql/#{table_name}.sql"))
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end
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end
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return if !struct_type
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struct_array = struct_type.type_array
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column_array = get_column_array(db, table_name)
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column_types = File.read("config/sql/#{table_name}.sql").match(/CREATE TABLE public\.#{table_name}\n\((?<types>[\d\D]*?)\);/)
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.try &.["types"].split(",").map(&.strip).reject &.starts_with?("CONSTRAINT")
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return if !column_types
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struct_array.each_with_index do |name, i|
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if name != column_array[i]?
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if !column_array[i]?
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new_column = column_types.select(&.starts_with?(name))[0]
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LOGGER.info("check_table: ALTER TABLE #{table_name} ADD COLUMN #{new_column}")
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db.exec("ALTER TABLE #{table_name} ADD COLUMN #{new_column}")
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next
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end
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# Column doesn't exist
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if !column_array.includes? name
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new_column = column_types.select(&.starts_with?(name))[0]
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db.exec("ALTER TABLE #{table_name} ADD COLUMN #{new_column}")
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end
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# Column exists but in the wrong position, rotate
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if struct_array.includes? column_array[i]
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until name == column_array[i]
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new_column = column_types.select(&.starts_with?(column_array[i]))[0]?.try &.gsub("#{column_array[i]}", "#{column_array[i]}_new")
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# There's a column we didn't expect
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if !new_column
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LOGGER.info("check_table: ALTER TABLE #{table_name} DROP COLUMN #{column_array[i]}")
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db.exec("ALTER TABLE #{table_name} DROP COLUMN #{column_array[i]} CASCADE")
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column_array = get_column_array(db, table_name)
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next
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end
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LOGGER.info("check_table: ALTER TABLE #{table_name} ADD COLUMN #{new_column}")
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db.exec("ALTER TABLE #{table_name} ADD COLUMN #{new_column}")
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LOGGER.info("check_table: UPDATE #{table_name} SET #{column_array[i]}_new=#{column_array[i]}")
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db.exec("UPDATE #{table_name} SET #{column_array[i]}_new=#{column_array[i]}")
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LOGGER.info("check_table: ALTER TABLE #{table_name} DROP COLUMN #{column_array[i]} CASCADE")
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db.exec("ALTER TABLE #{table_name} DROP COLUMN #{column_array[i]} CASCADE")
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LOGGER.info("check_table: ALTER TABLE #{table_name} RENAME COLUMN #{column_array[i]}_new TO #{column_array[i]}")
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db.exec("ALTER TABLE #{table_name} RENAME COLUMN #{column_array[i]}_new TO #{column_array[i]}")
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column_array = get_column_array(db, table_name)
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end
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else
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LOGGER.info("check_table: ALTER TABLE #{table_name} DROP COLUMN #{column_array[i]} CASCADE")
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db.exec("ALTER TABLE #{table_name} DROP COLUMN #{column_array[i]} CASCADE")
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end
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end
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end
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return if column_array.size <= struct_array.size
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column_array.each do |column|
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if !struct_array.includes? column
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LOGGER.info("check_table: ALTER TABLE #{table_name} DROP COLUMN #{column} CASCADE")
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db.exec("ALTER TABLE #{table_name} DROP COLUMN #{column} CASCADE")
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end
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end
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end
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def get_column_array(db, table_name)
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column_array = [] of String
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db.query("SELECT * FROM #{table_name} LIMIT 0") do |rs|
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rs.column_count.times do |i|
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column = rs.as(PG::ResultSet).field(i)
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column_array << column.name
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end
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end
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return column_array
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end
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end
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end
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