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| author | Jason Nochlin <hundredwatt@gmail.com> | 2015-02-07 15:33:13 -0500 |
|---|---|---|
| committer | Jason Nochlin <hundredwatt@users.noreply.github.com> | 2015-03-25 16:50:11 -0400 |
| commit | 4d6fbe2934e94384e722ff6ca16e97c8978d4665 (patch) | |
| tree | a00424fc01863d0c76c466cf33f692ebde67091e /activerecord/lib/active_record/core.rb | |
| parent | 348377da4d623a81b570b2bf46e6ef9e5ee4e12f (diff) | |
| download | rails-4d6fbe2934e94384e722ff6ca16e97c8978d4665.tar.gz rails-4d6fbe2934e94384e722ff6ca16e97c8978d4665.tar.bz2 rails-4d6fbe2934e94384e722ff6ca16e97c8978d4665.zip | |
Add `config.active_record.warn_on_records_fetched_greater_than` option
When set to an integer, a warning will be logged whenever a result set
larger than the specified size is returned by a query. Fixes #16463
The warning is outputed a module which is prepended in an initializer,
so there will be no performance impact if
`config.active_record.warn_on_records_fetched_greater_than` is not set.
Diffstat (limited to 'activerecord/lib/active_record/core.rb')
| -rw-r--r-- | activerecord/lib/active_record/core.rb | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/core.rb b/activerecord/lib/active_record/core.rb index 9a39a0e919..a17eb226f4 100644 --- a/activerecord/lib/active_record/core.rb +++ b/activerecord/lib/active_record/core.rb @@ -94,6 +94,15 @@ module ActiveRecord mattr_accessor :dump_schemas, instance_writer: false self.dump_schemas = :schema_search_path + ## + # :singleton-method: + # Specify a threshold for the size of query result sets. If the + # number of records in the set exceeds threshold, a warning is + # logged. This should be used to identify queries which pull + # thousands of records, which may cause memory bloat. + mattr_accessor :warn_on_records_fetched_greater_than, instance_writer: false + self.warn_on_records_fetched_greater_than = nil + mattr_accessor :maintain_test_schema, instance_accessor: false mattr_accessor :belongs_to_required_by_default, instance_accessor: false |