2018-07-25 05:30:33 -04:00
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# frozen_string_literal: true
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2019-03-28 09:17:42 -04:00
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class Snippet < ApplicationRecord
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2014-10-08 09:44:25 -04:00
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include Gitlab::VisibilityLevel
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include Redactable
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2016-10-06 17:17:11 -04:00
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include CacheMarkdownField
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2017-03-09 20:29:11 -05:00
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include Noteable
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include Participable
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include Sortable
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include Awardable
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include Mentionable
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include Spammable
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include Editable
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include Gitlab::SQL::Pattern
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include FromUnion
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include IgnorableColumns
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include HasRepository
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include AfterCommitQueue
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extend ::Gitlab::Utils::Override
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2020-03-17 02:09:21 -04:00
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MAX_FILE_COUNT = 1
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2016-10-06 17:17:11 -04:00
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cache_markdown_field :title, pipeline: :single_line
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cache_markdown_field :description
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2016-10-06 17:17:11 -04:00
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cache_markdown_field :content
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2018-09-20 10:14:46 -04:00
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redact_field :description
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2017-05-03 23:54:25 -04:00
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# Aliases to make application_helper#edited_time_ago_with_tooltip helper work properly with snippets.
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2019-09-18 10:02:45 -04:00
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# See https://gitlab.com/gitlab-org/gitlab-foss/merge_requests/10392/diffs#note_28719102
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2017-05-03 23:54:25 -04:00
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alias_attribute :last_edited_at, :updated_at
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alias_attribute :last_edited_by, :updated_by
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2016-10-06 17:17:11 -04:00
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# If file_name changes, it invalidates content
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alias_method :default_content_html_invalidator, :content_html_invalidated?
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def content_html_invalidated?
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default_content_html_invalidator || file_name_changed?
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end
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2015-05-02 23:14:31 -04:00
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belongs_to :author, class_name: 'User'
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belongs_to :project
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2013-03-25 07:58:09 -04:00
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2017-06-08 11:16:27 -04:00
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has_many :notes, as: :noteable, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
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has_many :user_mentions, class_name: "SnippetUserMention", dependent: :delete_all # rubocop:disable Cop/ActiveRecordDependent
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has_one :snippet_repository, inverse_of: :snippet
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2012-12-14 00:34:05 -05:00
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delegate :name, :email, to: :author, prefix: true, allow_nil: true
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validates :author, presence: true
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validates :title, presence: true, length: { maximum: 255 }
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validates :file_name,
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length: { maximum: 255 }
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validates :content, presence: true
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2019-12-02 07:06:45 -05:00
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validates :content,
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length: {
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maximum: ->(_) { Gitlab::CurrentSettings.snippet_size_limit },
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message: -> (_, data) do
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current_value = ActiveSupport::NumberHelper.number_to_human_size(data[:value].size)
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max_size = ActiveSupport::NumberHelper.number_to_human_size(Gitlab::CurrentSettings.snippet_size_limit)
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_("is too long (%{current_value}). The maximum size is %{max_size}.") % { current_value: current_value, max_size: max_size }
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end
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},
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if: :content_changed?
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2014-10-08 09:44:25 -04:00
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validates :visibility_level, inclusion: { in: Gitlab::VisibilityLevel.values }
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2020-02-13 19:09:07 -05:00
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after_save :store_mentions!, if: :any_mentionable_attributes_changed?
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2012-10-08 20:10:04 -04:00
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# Scopes
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scope :are_internal, -> { where(visibility_level: Snippet::INTERNAL) }
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scope :are_private, -> { where(visibility_level: Snippet::PRIVATE) }
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scope :are_public, -> { public_only }
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scope :are_secret, -> { public_only.where(secret: true) }
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scope :fresh, -> { order("created_at DESC") }
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scope :inc_author, -> { includes(:author) }
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scope :inc_relations_for_view, -> { includes(author: :status) }
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2011-10-27 03:14:50 -04:00
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2019-12-10 10:07:52 -05:00
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attr_mentionable :description
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participant :author
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participant :notes_with_associations
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2015-04-21 09:23:20 -04:00
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2017-02-01 13:15:59 -05:00
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attr_spammable :title, spam_title: true
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attr_spammable :content, spam_description: true
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2019-11-19 01:06:07 -05:00
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attr_encrypted :secret_token,
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key: Settings.attr_encrypted_db_key_base_truncated,
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mode: :per_attribute_iv,
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algorithm: 'aes-256-cbc'
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Rewrite SnippetsFinder to improve performance
This completely rewrites the SnippetsFinder class from the ground up in
order to improve its performance. The old code was beyond salvaging. It
was complex, included various Rails 5 workarounds, comments that
shouldn't be necessary, and most important of all: it produced a really
poorly performing database query.
As a result, I opted for rewriting the finder from scratch, instead of
trying to patch the existing code. Instead of trying to reuse as many
existing methods as possible, I opted for defining new methods
specifically meant for the SnippetsFinder. This requires some extra code
here and there, but allows us to have much more control over the
resulting SQL queries. It is these changes that then allow us to produce
a _much_ more efficient query.
To illustrate how bad the old query was, we will use my own snippets as
an example. Currently I have 52 snippets, most of which are global ones.
To retrieve these, you would run the following Ruby code:
user = User.find_by(username: 'yorickpeterse')
SnippetsFinder.new(user, author: user).execute
On GitLab.com the resulting query will take between 10 and 15 seconds to
run, producing the query plan found at
https://explain.depesz.com/s/Y5IX. Apart from the long execution time,
the total number of buffers (the sum of all shared hits) is around 185
GB, though the real number is probably (hopefully) much lower as I doubt
simply summing these numbers produces the true total number of buffers
used.
The new query's plan can be found at https://explain.depesz.com/s/wHdN,
and this query takes between 10 and 100-ish milliseconds to run. The
total number of buffers used is only about 30 MB.
Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/52639
2018-10-25 11:35:31 -04:00
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def self.with_optional_visibility(value = nil)
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if value
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where(visibility_level: value)
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else
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all
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end
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end
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2019-10-18 14:06:21 -04:00
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def self.only_personal_snippets
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Rewrite SnippetsFinder to improve performance
This completely rewrites the SnippetsFinder class from the ground up in
order to improve its performance. The old code was beyond salvaging. It
was complex, included various Rails 5 workarounds, comments that
shouldn't be necessary, and most important of all: it produced a really
poorly performing database query.
As a result, I opted for rewriting the finder from scratch, instead of
trying to patch the existing code. Instead of trying to reuse as many
existing methods as possible, I opted for defining new methods
specifically meant for the SnippetsFinder. This requires some extra code
here and there, but allows us to have much more control over the
resulting SQL queries. It is these changes that then allow us to produce
a _much_ more efficient query.
To illustrate how bad the old query was, we will use my own snippets as
an example. Currently I have 52 snippets, most of which are global ones.
To retrieve these, you would run the following Ruby code:
user = User.find_by(username: 'yorickpeterse')
SnippetsFinder.new(user, author: user).execute
On GitLab.com the resulting query will take between 10 and 15 seconds to
run, producing the query plan found at
https://explain.depesz.com/s/Y5IX. Apart from the long execution time,
the total number of buffers (the sum of all shared hits) is around 185
GB, though the real number is probably (hopefully) much lower as I doubt
simply summing these numbers produces the true total number of buffers
used.
The new query's plan can be found at https://explain.depesz.com/s/wHdN,
and this query takes between 10 and 100-ish milliseconds to run. The
total number of buffers used is only about 30 MB.
Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/52639
2018-10-25 11:35:31 -04:00
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where(project_id: nil)
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end
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2020-04-27 08:09:41 -04:00
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def self.only_project_snippets
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where.not(project_id: nil)
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end
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Rewrite SnippetsFinder to improve performance
This completely rewrites the SnippetsFinder class from the ground up in
order to improve its performance. The old code was beyond salvaging. It
was complex, included various Rails 5 workarounds, comments that
shouldn't be necessary, and most important of all: it produced a really
poorly performing database query.
As a result, I opted for rewriting the finder from scratch, instead of
trying to patch the existing code. Instead of trying to reuse as many
existing methods as possible, I opted for defining new methods
specifically meant for the SnippetsFinder. This requires some extra code
here and there, but allows us to have much more control over the
resulting SQL queries. It is these changes that then allow us to produce
a _much_ more efficient query.
To illustrate how bad the old query was, we will use my own snippets as
an example. Currently I have 52 snippets, most of which are global ones.
To retrieve these, you would run the following Ruby code:
user = User.find_by(username: 'yorickpeterse')
SnippetsFinder.new(user, author: user).execute
On GitLab.com the resulting query will take between 10 and 15 seconds to
run, producing the query plan found at
https://explain.depesz.com/s/Y5IX. Apart from the long execution time,
the total number of buffers (the sum of all shared hits) is around 185
GB, though the real number is probably (hopefully) much lower as I doubt
simply summing these numbers produces the true total number of buffers
used.
The new query's plan can be found at https://explain.depesz.com/s/wHdN,
and this query takes between 10 and 100-ish milliseconds to run. The
total number of buffers used is only about 30 MB.
Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/52639
2018-10-25 11:35:31 -04:00
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def self.only_include_projects_visible_to(current_user = nil)
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levels = Gitlab::VisibilityLevel.levels_for_user(current_user)
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joins(:project).where('projects.visibility_level IN (?)', levels)
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end
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def self.only_include_projects_with_snippets_enabled(include_private: false)
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column = ProjectFeature.access_level_attribute(:snippets)
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levels = [ProjectFeature::ENABLED, ProjectFeature::PUBLIC]
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levels << ProjectFeature::PRIVATE if include_private
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joins(project: :project_feature)
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.where(project_features: { column => levels })
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end
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def self.only_include_authorized_projects(current_user)
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where(
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'EXISTS (?)',
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ProjectAuthorization
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.select(1)
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.where('project_id = snippets.project_id')
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.where(user_id: current_user.id)
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)
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end
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def self.for_project_with_user(project, user = nil)
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return none unless project.snippets_visible?(user)
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if user && project.team.member?(user)
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project.snippets
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else
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project.snippets.public_to_user(user)
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end
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end
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def self.visible_to_or_authored_by(user)
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2019-11-19 01:06:07 -05:00
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query = where(visibility_level: Gitlab::VisibilityLevel.levels_for_user(user))
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query.or(where(author_id: user.id))
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Rewrite SnippetsFinder to improve performance
This completely rewrites the SnippetsFinder class from the ground up in
order to improve its performance. The old code was beyond salvaging. It
was complex, included various Rails 5 workarounds, comments that
shouldn't be necessary, and most important of all: it produced a really
poorly performing database query.
As a result, I opted for rewriting the finder from scratch, instead of
trying to patch the existing code. Instead of trying to reuse as many
existing methods as possible, I opted for defining new methods
specifically meant for the SnippetsFinder. This requires some extra code
here and there, but allows us to have much more control over the
resulting SQL queries. It is these changes that then allow us to produce
a _much_ more efficient query.
To illustrate how bad the old query was, we will use my own snippets as
an example. Currently I have 52 snippets, most of which are global ones.
To retrieve these, you would run the following Ruby code:
user = User.find_by(username: 'yorickpeterse')
SnippetsFinder.new(user, author: user).execute
On GitLab.com the resulting query will take between 10 and 15 seconds to
run, producing the query plan found at
https://explain.depesz.com/s/Y5IX. Apart from the long execution time,
the total number of buffers (the sum of all shared hits) is around 185
GB, though the real number is probably (hopefully) much lower as I doubt
simply summing these numbers produces the true total number of buffers
used.
The new query's plan can be found at https://explain.depesz.com/s/wHdN,
and this query takes between 10 and 100-ish milliseconds to run. The
total number of buffers used is only about 30 MB.
Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/52639
2018-10-25 11:35:31 -04:00
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end
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2015-05-02 23:11:21 -04:00
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def self.reference_prefix
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'$'
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end
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2015-05-14 16:59:39 -04:00
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# Pattern used to extract `$123` snippet references from text
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#
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# This pattern supports cross-project references.
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def self.reference_pattern
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2016-03-24 11:41:48 -04:00
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@reference_pattern ||= %r{
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2015-12-01 09:51:27 -05:00
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(#{Project.reference_pattern})?
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#{Regexp.escape(reference_prefix)}(?<snippet>\d+)
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2015-05-14 16:59:39 -04:00
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}x
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end
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2015-11-30 15:14:46 -05:00
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def self.link_reference_pattern
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2016-03-24 11:41:48 -04:00
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@link_reference_pattern ||= super("snippets", /(?<snippet>\d+)/)
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2015-11-30 15:14:46 -05:00
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end
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2020-03-04 19:07:49 -05:00
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def self.find_by_id_and_project(id:, project:)
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Snippet.find_by(id: id, project: project)
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end
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2019-10-16 20:07:27 -04:00
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def initialize(attributes = {})
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# We can't use default_value_for because the database has a default
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# value of 0 for visibility_level. If someone attempts to create a
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# private snippet, default_value_for will assume that the
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# visibility_level hasn't changed and will use the application
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# setting default, which could be internal or public.
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#
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# To fix the problem, we assign the actual snippet default if no
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# explicit visibility has been initialized.
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attributes ||= {}
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unless visibility_attribute_present?(attributes)
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attributes[:visibility_level] = Gitlab::CurrentSettings.default_snippet_visibility
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end
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super
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end
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2017-11-22 08:20:35 -05:00
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def to_reference(from = nil, full: false)
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2015-05-02 23:11:21 -04:00
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reference = "#{self.class.reference_prefix}#{id}"
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2016-11-02 19:49:13 -04:00
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if project.present?
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2020-01-29 07:09:08 -05:00
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"#{project.to_reference_base(from, full: full)}#{reference}"
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2016-11-02 19:49:13 -04:00
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else
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reference
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2015-05-02 23:11:21 -04:00
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end
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end
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2017-04-13 12:47:28 -04:00
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def blob
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2020-02-25 04:09:10 -05:00
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@blob ||= Blob.decorate(SnippetBlob.new(self), self)
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end
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def blobs
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2020-03-06 10:08:05 -05:00
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return [] unless repository_exists?
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2020-02-25 04:09:10 -05:00
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repository.ls_files(repository.root_ref).map { |file| Blob.lazy(self, repository.root_ref, file) }
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2012-04-20 18:26:22 -04:00
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end
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2015-03-05 13:38:23 -05:00
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def hook_attrs
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attributes
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end
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2016-12-02 07:54:57 -05:00
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def file_name
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super.to_s
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end
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2020-02-25 04:09:10 -05:00
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def self.sanitized_file_name(file_name)
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2014-12-12 06:28:48 -05:00
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file_name.gsub(/[^a-zA-Z0-9_\-\.]+/, '')
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end
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2014-10-08 09:44:25 -04:00
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def visibility_level_field
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2017-03-01 15:23:00 -05:00
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:visibility_level
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2014-12-12 06:15:42 -05:00
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end
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2014-10-08 09:44:25 -04:00
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2018-12-11 01:28:06 -05:00
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def embeddable?
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2020-01-23 07:08:38 -05:00
|
|
|
Ability.allowed?(nil, :read_snippet, self)
|
2018-12-11 01:28:06 -05:00
|
|
|
end
|
|
|
|
|
2016-05-26 07:38:28 -04:00
|
|
|
def notes_with_associations
|
2016-06-03 14:47:09 -04:00
|
|
|
notes.includes(:author)
|
2016-05-26 07:38:28 -04:00
|
|
|
end
|
|
|
|
|
2017-02-01 13:15:59 -05:00
|
|
|
def check_for_spam?
|
2017-03-20 22:37:29 -04:00
|
|
|
visibility_level_changed?(to: Snippet::PUBLIC) ||
|
|
|
|
(public? && (title_changed? || content_changed?))
|
2017-02-01 13:15:59 -05:00
|
|
|
end
|
|
|
|
|
2020-01-19 19:09:03 -05:00
|
|
|
# snippets are the biggest sources of spam
|
2019-09-24 23:06:21 -04:00
|
|
|
override :allow_possible_spam?
|
|
|
|
def allow_possible_spam?
|
|
|
|
false
|
|
|
|
end
|
|
|
|
|
2017-02-01 13:15:59 -05:00
|
|
|
def spammable_entity_type
|
|
|
|
'snippet'
|
|
|
|
end
|
|
|
|
|
2019-06-21 00:45:27 -04:00
|
|
|
def to_ability_name
|
2020-01-23 07:08:38 -05:00
|
|
|
'snippet'
|
2019-06-21 00:45:27 -04:00
|
|
|
end
|
|
|
|
|
2019-11-19 01:06:07 -05:00
|
|
|
def valid_secret_token?(token)
|
|
|
|
return false unless token && secret_token
|
|
|
|
|
|
|
|
ActiveSupport::SecurityUtils.secure_compare(token.to_s, secret_token.to_s)
|
|
|
|
end
|
|
|
|
|
|
|
|
def as_json(options = {})
|
|
|
|
options[:except] = Array.wrap(options[:except])
|
|
|
|
options[:except] << :secret_token
|
|
|
|
|
|
|
|
super
|
|
|
|
end
|
|
|
|
|
2020-04-07 11:09:30 -04:00
|
|
|
override :repository
|
2020-02-13 10:08:52 -05:00
|
|
|
def repository
|
2020-02-26 22:08:49 -05:00
|
|
|
@repository ||= Repository.new(full_path, self, shard: repository_storage, disk_path: disk_path, repo_type: Gitlab::GlRepository::SNIPPET)
|
2020-02-13 10:08:52 -05:00
|
|
|
end
|
|
|
|
|
2020-04-07 11:09:30 -04:00
|
|
|
override :repository_size_checker
|
2020-04-06 20:09:33 -04:00
|
|
|
def repository_size_checker
|
|
|
|
strong_memoize(:repository_size_checker) do
|
|
|
|
::Gitlab::RepositorySizeChecker.new(
|
2020-04-09 11:09:29 -04:00
|
|
|
current_size_proc: -> { repository.size.megabytes },
|
2020-04-06 20:09:33 -04:00
|
|
|
limit: Gitlab::CurrentSettings.snippet_size_limit
|
|
|
|
)
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2020-04-07 11:09:30 -04:00
|
|
|
override :storage
|
2020-02-13 10:08:52 -05:00
|
|
|
def storage
|
|
|
|
@storage ||= Storage::Hashed.new(self, prefix: Storage::Hashed::SNIPPET_REPOSITORY_PATH_PREFIX)
|
|
|
|
end
|
|
|
|
|
|
|
|
# This is the full_path used to identify the
|
|
|
|
# the snippet repository. It will be used mostly
|
|
|
|
# for logging purposes.
|
2020-04-07 11:09:30 -04:00
|
|
|
override :full_path
|
2020-02-13 10:08:52 -05:00
|
|
|
def full_path
|
|
|
|
return unless persisted?
|
|
|
|
|
|
|
|
@full_path ||= begin
|
|
|
|
components = []
|
|
|
|
components << project.full_path if project_id?
|
|
|
|
components << '@snippets'
|
|
|
|
components << self.id
|
|
|
|
components.join('/')
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
def repository_storage
|
2020-03-24 20:08:11 -04:00
|
|
|
snippet_repository&.shard_name || self.class.pick_repository_storage
|
2020-02-13 10:08:52 -05:00
|
|
|
end
|
|
|
|
|
|
|
|
def create_repository
|
2020-03-04 10:08:09 -05:00
|
|
|
return if repository_exists? && snippet_repository
|
2020-02-13 10:08:52 -05:00
|
|
|
|
|
|
|
repository.create_if_not_exists
|
2020-03-25 08:08:19 -04:00
|
|
|
track_snippet_repository(repository.storage)
|
2020-02-13 10:08:52 -05:00
|
|
|
end
|
|
|
|
|
2020-03-25 08:08:19 -04:00
|
|
|
def track_snippet_repository(shard)
|
|
|
|
snippet_repo = snippet_repository || build_snippet_repository
|
|
|
|
snippet_repo.update!(shard_name: shard, disk_path: disk_path)
|
2020-02-13 10:08:52 -05:00
|
|
|
end
|
|
|
|
|
2020-02-28 16:09:15 -05:00
|
|
|
def can_cache_field?(field)
|
|
|
|
field != :content || MarkupHelper.gitlab_markdown?(file_name)
|
|
|
|
end
|
|
|
|
|
2020-03-06 13:08:08 -05:00
|
|
|
def hexdigest
|
|
|
|
Digest::SHA256.hexdigest("#{title}#{description}#{created_at}#{updated_at}")
|
|
|
|
end
|
|
|
|
|
2020-04-21 11:21:10 -04:00
|
|
|
def file_name_on_repo
|
|
|
|
return if repository.empty?
|
|
|
|
|
|
|
|
repository.ls_files(repository.root_ref).first
|
|
|
|
end
|
|
|
|
|
2014-08-29 15:22:45 -04:00
|
|
|
class << self
|
2020-03-11 14:09:23 -04:00
|
|
|
# Searches for snippets with a matching title, description or file name.
|
2016-03-01 06:51:01 -05:00
|
|
|
#
|
|
|
|
# This method uses ILIKE on PostgreSQL and LIKE on MySQL.
|
|
|
|
#
|
|
|
|
# query - The search query as a String.
|
|
|
|
#
|
|
|
|
# Returns an ActiveRecord::Relation.
|
2014-08-29 15:22:45 -04:00
|
|
|
def search(query)
|
2020-03-11 14:09:23 -04:00
|
|
|
fuzzy_search(query, [:title, :description, :file_name])
|
2014-08-29 15:22:45 -04:00
|
|
|
end
|
|
|
|
|
2018-02-28 02:48:23 -05:00
|
|
|
def parent_class
|
|
|
|
::Project
|
|
|
|
end
|
2014-08-29 15:22:45 -04:00
|
|
|
end
|
2011-10-16 17:07:10 -04:00
|
|
|
end
|
2019-09-13 09:26:31 -04:00
|
|
|
|
|
|
|
Snippet.prepend_if_ee('EE::Snippet')
|