Prepared statements everywhere
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@ -88,57 +88,52 @@ class Handler
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year = year.to_i?
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year = year.to_i?
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datos = [] of Tuple(Int32, String)
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DB.open(DB_URL) do |cursor|
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if prefijo.nil? && year.nil?
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if prefijo.nil? && year.nil?
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# Global totals
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# Global totals
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sql = %(
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result_set = cursor.query("
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SELECT total::integer, nombre
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SELECT total::integer, nombre
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FROM totales
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FROM totales
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ORDER BY total DESC
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ORDER BY total DESC
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LIMIT 50
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LIMIT 50")
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)
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elsif prefijo.nil? && !year.nil?
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elsif prefijo.nil? && !year.nil?
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# Per-year totals
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# Per-year totals
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sql = %(
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result_set = cursor.query("
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SELECT contador::integer, nombre
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SELECT contador::integer, nombre
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FROM nombres
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FROM nombres
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WHERE
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WHERE
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anio = '#{year}'
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anio = $1
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ORDER BY contador DESC
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ORDER BY contador DESC
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LIMIT 50
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LIMIT 50", year)
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)
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elsif !prefijo.nil? && year.nil?
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elsif !prefijo.nil? && year.nil?
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# Filter only by prefix
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# Filter only by prefix
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sql = %(
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result_set = cursor.query("
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SELECT total, nombre
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SELECT total::integer, nombre
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FROM totales
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FROM totales
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WHERE
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WHERE
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nombre LIKE '#{prefijo}%'
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nombre LIKE $1
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ORDER BY total DESC
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ORDER BY total DESC
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LIMIT 50
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LIMIT 50", prefijo + "%")
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)
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elsif !prefijo.nil? && !year.nil?
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else
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# We have both
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# We have both
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sql = %(
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result_set = cursor.query("
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SELECT contador, nombre
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SELECT contador::integer, nombre
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FROM nombres
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FROM nombres
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WHERE
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WHERE
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anio = '#{year}' AND
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anio = $1 AND
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nombre LIKE '#{prefijo}%'
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nombre LIKE $2
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ORDER BY contador DESC
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ORDER BY contador DESC
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LIMIT 50
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LIMIT 50", year, prefijo + "%")
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)
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end
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end
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puts "QUERY: #{sql}"
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if !result_set.nil?
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datos = [] of Tuple(Int32, String)
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DB.open(DB_URL) do |cursor|
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cursor.query sql do |result_set|
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result_set.each do
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result_set.each do
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valor = result_set.read(Int32)
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valor = result_set.read(Int32)
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nombre = result_set.read(String)
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nombre = result_set.read(String)
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datos.push({valor, nombre})
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datos.push({valor, nombre})
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end
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end
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result_set.close
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end
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end
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end
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end
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@ -9,6 +9,8 @@ require "pg"
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USER = File.read("/var/openfaas/secrets/nombres-user").strip
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USER = File.read("/var/openfaas/secrets/nombres-user").strip
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PASS = File.read("/var/openfaas/secrets/nombres-pass").strip
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PASS = File.read("/var/openfaas/secrets/nombres-pass").strip
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DB_URL = "postgres://#{USER}:#{PASS}@10.61.0.1:5432/nombres"
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class Handler
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class Handler
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def format_buffer(buffer, canvas_name, title = "")
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def format_buffer(buffer, canvas_name, title = "")
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@ -41,14 +43,14 @@ class Handler
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html.gsub("gnuplot_canvas", canvas_name)
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html.gsub("gnuplot_canvas", canvas_name)
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end
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end
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def query(sql)
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def query(sql, nombre)
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# Runs a SQL query against the database.
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# Runs a SQL query against the database.
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#
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#
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# Returns an array of values [[Year,Count]...]
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# Returns an array of values [[Year,Count]...]
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# Or nil if there are no results
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# Or nil if there are no results
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DB.open("postgres://#{USER}:#{PASS}@10.61.0.1:5432/nombres") do |cursor|
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DB.open(DB_URL) do |cursor|
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cursor.query sql do |result_set|
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cursor.query(sql, nombre) do |result_set|
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result = [] of Tuple(Int32, Int32)
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result = [] of Tuple(Int32, Int32)
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result_set.each do
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result_set.each do
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year = result_set.read(Int32)
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year = result_set.read(Int32)
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@ -96,10 +98,9 @@ class Handler
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show_key(true)
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show_key(true)
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xrange(1922..2015)
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xrange(1922..2015)
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nombres.map { |nombre|
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nombres.map { |nombre|
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sql = "SELECT anio::integer, contador::integer FROM nombres WHERE nombre = '#{nombre}' ORDER BY anio"
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x = Array(Int32).new
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x = Array(Int32).new
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y = Array(Int32).new
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y = Array(Int32).new
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results = query(sql)
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results = query("SELECT anio::integer, contador::integer FROM nombres WHERE nombre = $1 ORDER BY anio", nombre)
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if results.nil? # No results, all 0s
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if results.nil? # No results, all 0s
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x = (1922..2015).to_a
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x = (1922..2015).to_a
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y = x.map { |_| 0 }
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y = x.map { |_| 0 }
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