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2700 improve product refresh scheduling #2701

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merged 3 commits into from
Sep 18, 2018
Merged

2700 improve product refresh scheduling #2701

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2e635f9
Make job queuing more robust and efficient
mkllnk Sep 13, 2018
ec953e1
Style cache refreshment class
mkllnk Sep 13, 2018
ac85b90
Clarify private class method declaration
mkllnk Sep 15, 2018
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6 changes: 0 additions & 6 deletions .rubocop_todo.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -185,7 +185,6 @@ Layout/EmptyLines:
- 'lib/open_food_network/order_cycle_permissions.rb'
- 'lib/open_food_network/products_cache.rb'
- 'lib/open_food_network/products_cache_integrity_checker.rb'
- 'lib/open_food_network/products_cache_refreshment.rb'
- 'lib/open_food_network/products_renderer.rb'
- 'lib/open_food_network/property_merge.rb'
- 'lib/open_food_network/reports/bulk_coop_report.rb'
Expand Down Expand Up @@ -560,7 +559,6 @@ Layout/MultilineOperationIndentation:
- 'app/models/variant_override_set.rb'
- 'lib/open_food_network/accounts_and_billing_settings_validator.rb'
- 'lib/open_food_network/order_cycle_permissions.rb'
- 'lib/open_food_network/products_cache_refreshment.rb'
- 'lib/open_food_network/sales_tax_report.rb'
- 'lib/open_food_network/users_and_enterprises_report.rb'

Expand Down Expand Up @@ -986,7 +984,6 @@ Lint/IneffectiveAccessModifier:
- 'app/models/variant_override.rb'
- 'lib/open_food_network/feature_toggle.rb'
- 'lib/open_food_network/products_cache.rb'
- 'lib/open_food_network/products_cache_refreshment.rb'
- 'lib/open_food_network/property_merge.rb'
- 'spec/lib/open_food_network/reports/report_spec.rb'

Expand Down Expand Up @@ -1096,7 +1093,6 @@ Lint/UselessAccessModifier:
- 'app/models/column_preference.rb'
- 'lib/open_food_network/feature_toggle.rb'
- 'lib/open_food_network/products_cache.rb'
- 'lib/open_food_network/products_cache_refreshment.rb'
- 'lib/open_food_network/property_merge.rb'
- 'lib/open_food_network/reports/bulk_coop_report.rb'
- 'spec/lib/open_food_network/reports/report_spec.rb'
Expand Down Expand Up @@ -1505,7 +1501,6 @@ Rails/TimeZone:
- 'lib/open_food_network/users_and_enterprises_report.rb'
- 'spec/controllers/api/statuses_controller_spec.rb'
- 'spec/jobs/heartbeat_job_spec.rb'
- 'spec/lib/open_food_network/products_cache_refreshment_spec.rb'
- 'spec/lib/open_food_network/products_cache_spec.rb'
- 'spec/models/enterprise_relationship_spec.rb'
- 'spec/models/variant_override_spec.rb'
Expand Down Expand Up @@ -1861,7 +1856,6 @@ Style/GuardClause:
- 'lib/open_food_network/accounts_and_billing_settings_validator.rb'
- 'lib/open_food_network/order_cycle_form_applicator.rb'
- 'lib/open_food_network/products_cache.rb'
- 'lib/open_food_network/products_cache_refreshment.rb'
- 'lib/open_food_network/products_renderer.rb'
- 'lib/open_food_network/rack_request_blocker.rb'
- 'lib/open_food_network/variant_and_line_item_naming.rb'
Expand Down
32 changes: 17 additions & 15 deletions lib/open_food_network/products_cache_refreshment.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -21,21 +21,23 @@ def self.refresh(distributor, order_cycle)
enqueue_job(job) unless pending_job?(job)
end

private

def self.refresh_job(distributor, order_cycle)
RefreshProductsCacheJob.new(distributor.id, order_cycle.id)
end

def self.pending_job?(job)
Delayed::Job.
where(locked_at: nil).
where(handler: job.to_yaml).
exists?
end

def self.enqueue_job(job)
Delayed::Job.enqueue job, priority: 10
class << self
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@luisramos0 luisramos0 Sep 13, 2018 •
edited
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what happened here?
I just spent half an hour reading about eigenclasses... my head hurts :-)
In this particular case, is this a convention (use class << self instead of self. ) or is there any change in logic with this?

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@sauloperez sauloperez Sep 13, 2018 •
edited
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I'd like to check what the Ruby Style guide says about it and I'd stick to the community's default. Also, private doesn't work for class methods AFAIK, so I'm not sure here if these methods get hid.

You met the deepest part of Ruby, congrats @luisramos0 :trollface:

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hmm.. I read a bit more about this and actually, this is exactly how you create private class methods :-)

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I know! I was a bit reluctant to use class << self here, but I followed rubocop and found that it is the widely accepted way to declare private class methods. I should have tackled one rubocop violation at a time to explain it better. Sorry.

The alternative is to declare it separately:

private_class_method :refresh_job
private_class_method :pending_job?
private_class_method :enqueue_job

That is more repetitive, but you definitely know what it's doing. Should I change it?

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👍
private_class_method is much easier to understand :-)
If it's also correct I'd use it.

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Okay, please see my additional commit. If you approve, I will squash it with the previous commit.

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yes, imo, much better.

private

def refresh_job(distributor, order_cycle)
RefreshProductsCacheJob.new(distributor.id, order_cycle.id)
end

def pending_job?(job)
Delayed::Job.
where(locked_at: nil).
where(handler: job.to_yaml).
exists?
end

def enqueue_job(job)
Delayed::Job.enqueue job, priority: 10
end
end
end
end