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New feature to track query blockers.
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39 changes: 39 additions & 0 deletions
39
lib/generators/pghero/blocker_sample_sessions_generator.rb
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# frozen_string_literal: true | ||
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# taken from https://github.com/collectiveidea/audited/blob/master/lib/generators/audited/install_generator.rb | ||
require 'rails/generators' | ||
require 'rails/generators/migration' | ||
require 'active_record' | ||
require 'rails/generators/active_record' | ||
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module Pghero | ||
module Generators | ||
class BlockerSampleSessionsGenerator < Rails::Generators::Base | ||
include Rails::Generators::Migration | ||
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source_root File.expand_path('../templates', __FILE__) | ||
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# Implement the required interface for Rails::Generators::Migration. | ||
def self.next_migration_number(dirname) #:nodoc: | ||
next_migration_number = current_migration_number(dirname) + 1 | ||
if ::ActiveRecord::Base.timestamped_migrations | ||
[Time.now.utc.strftime("%Y%m%d%H%M%S"), "%.14d" % next_migration_number].max | ||
else | ||
'%.3d' % next_migration_number | ||
end | ||
end | ||
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def copy_migration | ||
migration_template 'blocker_sample_sessions.rb', | ||
'db/migrate/create_pghero_blocker_sample_sessions.rb', | ||
migration_version: migration_version | ||
end | ||
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def migration_version | ||
return unless ActiveRecord::VERSION::MAJOR >= 5 | ||
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"[#{ActiveRecord::VERSION::MAJOR}.#{ActiveRecord::VERSION::MINOR}]" | ||
end | ||
end | ||
end | ||
end |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,39 @@ | ||
# frozen_string_literal: true | ||
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# taken from https://github.com/collectiveidea/audited/blob/master/lib/generators/audited/install_generator.rb | ||
require 'rails/generators' | ||
require 'rails/generators/migration' | ||
require 'active_record' | ||
require 'rails/generators/active_record' | ||
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module Pghero | ||
module Generators | ||
class BlockerSamplesGenerator < Rails::Generators::Base | ||
include Rails::Generators::Migration | ||
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source_root File.expand_path('../templates', __FILE__) | ||
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# Implement the required interface for Rails::Generators::Migration. | ||
def self.next_migration_number(dirname) #:nodoc: | ||
next_migration_number = current_migration_number(dirname) + 1 | ||
if ::ActiveRecord::Base.timestamped_migrations | ||
[Time.now.utc.strftime("%Y%m%d%H%M%S"), "%.14d" % next_migration_number].max | ||
else | ||
'%.3d' % next_migration_number | ||
end | ||
end | ||
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def copy_migration | ||
migration_template 'blocker_samples.rb', | ||
'db/migrate/create_pghero_blocker_samples.rb', | ||
migration_version: migration_version | ||
end | ||
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def migration_version | ||
return unless ActiveRecord::VERSION::MAJOR >= 5 | ||
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"[#{ActiveRecord::VERSION::MAJOR}.#{ActiveRecord::VERSION::MINOR}]" | ||
end | ||
end | ||
end | ||
end |
31 changes: 31 additions & 0 deletions
31
lib/generators/pghero/templates/blocker_sample_sessions.rb.tt
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class <%= migration_class_name %> < ActiveRecord::Migration<%= migration_version %> | ||
def change | ||
create_table :pghero_blocker_sample_sessions do |t| | ||
t.integer :blocker_sample_id, limit: 8 | ||
t.integer :pid | ||
t.text :user | ||
t.text :source | ||
t.inet :client_addr | ||
t.text :client_hostname | ||
t.integer :client_port | ||
t.timestamp :backend_start | ||
t.timestamp :xact_start | ||
t.timestamp :query_start | ||
t.timestamp :state_change | ||
t.text :wait_event_type | ||
t.text :wait_event | ||
t.text :state | ||
t.integer :backend_xid, limit: 8 | ||
t.integer :backend_xmin, limit: 8 | ||
t.text :query | ||
t.integer :query_hash, limit: 8 | ||
t.text :backend_type | ||
t.integer :blocked_by, array: true | ||
t.integer :blocking, array: true | ||
end | ||
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add_foreign_key :pghero_blocker_sample_sessions, :pghero_blocker_samples, column: :blocker_sample_id | ||
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add_index :pghero_blocker_sample_sessions, :blocker_sample_id | ||
end | ||
end |
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class <%= migration_class_name %> < ActiveRecord::Migration<%= migration_version %> | ||
def change | ||
create_table :pghero_blocker_samples do |t| | ||
t.text :database | ||
t.timestamp :captured_at | ||
t.integer :txid_xmin, limit: 8 | ||
t.integer :txid_xmax, limit: 8 | ||
t.integer :txid_xip, limit: 8, array: true | ||
end | ||
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add_index :pghero_blocker_samples, [:database, :captured_at] | ||
end | ||
end |
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Original file line number | Diff line number | Diff line change |
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# frozen_string_literal: true | ||
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module PgHero | ||
class BaseDatabase | ||
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include Methods::Basic | ||
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# Subclasses must define connection_model returning and ActiveRecord model | ||
# for connection management | ||
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def connection | ||
connection_model.connection | ||
end | ||
end | ||
end |
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