Use activerecord-import for bulk importing tracepoint records
authorAndy Allan <git@gravitystorm.co.uk>
Wed, 23 Jan 2019 17:12:30 +0000 (18:12 +0100)
committerAndy Allan <git@gravitystorm.co.uk>
Wed, 20 Mar 2019 09:35:40 +0000 (10:35 +0100)
Non-rigourous testing shows a significant speedup, even on ssds.

Gemfile
Gemfile.lock
app/models/trace.rb
test/models/trace_test.rb

diff --git a/Gemfile b/Gemfile
index 372b7d0..83f2981 100644 (file)
--- a/Gemfile
+++ b/Gemfile
@@ -46,6 +46,7 @@ gem "image_optim_rails"
 # Load rails plugins
 gem "actionpack-page_caching"
 gem "active_record_union"
 # Load rails plugins
 gem "actionpack-page_caching"
 gem "active_record_union"
+gem "activerecord-import"
 gem "cancancan"
 gem "composite_primary_keys", "~> 11.1.0"
 gem "config"
 gem "cancancan"
 gem "composite_primary_keys", "~> 11.1.0"
 gem "config"
index 2b5cc1d..57feba1 100644 (file)
@@ -40,6 +40,8 @@ GEM
       activemodel (= 5.2.2.1)
       activesupport (= 5.2.2.1)
       arel (>= 9.0)
       activemodel (= 5.2.2.1)
       activesupport (= 5.2.2.1)
       arel (>= 9.0)
+    activerecord-import (0.28.1)
+      activerecord (>= 3.2)
     activestorage (5.2.2.1)
       actionpack (= 5.2.2.1)
       activerecord (= 5.2.2.1)
     activestorage (5.2.2.1)
       actionpack (= 5.2.2.1)
       activerecord (= 5.2.2.1)
@@ -423,6 +425,7 @@ DEPENDENCIES
   aasm
   actionpack-page_caching
   active_record_union
   aasm
   actionpack-page_caching
   active_record_union
+  activerecord-import
   annotate
   autoprefixer-rails (~> 8.6.3)
   better_errors
   annotate
   autoprefixer-rails (~> 8.6.3)
   better_errors
index 892d41a..bd8ab72 100644 (file)
@@ -289,6 +289,8 @@ class Trace < ActiveRecord::Base
     # If there are any existing points for this trace then delete them
     Tracepoint.where(:gpx_id => id).delete_all
 
     # If there are any existing points for this trace then delete them
     Tracepoint.where(:gpx_id => id).delete_all
 
+    # Gather the trace points together for a bulk import
+    tracepoints = []
     gpx.points do |point|
       if first
         f_lat = point.latitude
     gpx.points do |point|
       if first
         f_lat = point.latitude
@@ -303,9 +305,16 @@ class Trace < ActiveRecord::Base
       tp.timestamp = point.timestamp
       tp.gpx_id = id
       tp.trackid = point.segment
       tp.timestamp = point.timestamp
       tp.gpx_id = id
       tp.trackid = point.segment
-      tp.save!
+      tracepoints << tp
     end
 
     end
 
+    # Run the before_save and before_create callbacks, and then import them in bulk with activerecord-import
+    tracepoints.each do |tp|
+      tp.run_callbacks(:save) { false }
+      tp.run_callbacks(:create) { false }
+    end
+    Tracepoint.import(tracepoints)
+
     if gpx.actual_points.positive?
       max_lat = Tracepoint.where(:gpx_id => id).maximum(:latitude)
       min_lat = Tracepoint.where(:gpx_id => id).minimum(:latitude)
     if gpx.actual_points.positive?
       max_lat = Tracepoint.where(:gpx_id => id).maximum(:latitude)
       min_lat = Tracepoint.where(:gpx_id => id).minimum(:latitude)
index f03488a..81120f0 100644 (file)
@@ -206,6 +206,10 @@ class TraceTest < ActiveSupport::TestCase
 
       trace.reload
       assert_equal 1, Tracepoint.where(:gpx_id => trace.id).count
 
       trace.reload
       assert_equal 1, Tracepoint.where(:gpx_id => trace.id).count
+
+      # Check that the tile has been set prior to the bulk import
+      # i.e. that the callbacks have been run correctly
+      assert_equal 3221331576, Tracepoint.where(:gpx_id => trace.id).first.tile
     end
   end
 
     end
   end