gitlab-org--gitlab-foss/app/services/system_note_service.rb

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# SystemNoteService
#
# Used for creating system notes (e.g., when a user references a merge request
# from an issue, an issue's assignee changes, an issue is closed, etc.)
module SystemNoteService
extend self
# Called when commits are added to a Merge Request
#
# noteable - Noteable object
# project - Project owning noteable
# author - User performing the change
# new_commits - Array of Commits added since last push
# existing_commits - Array of Commits added in a previous push
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# oldrev - Optional String SHA of a previous Commit
#
# See new_commit_summary and existing_commit_summary.
#
# Returns the created Note object
def add_commits(noteable, project, author, new_commits, existing_commits = [], oldrev = nil)
total_count = new_commits.length + existing_commits.length
commits_text = "#{total_count} commit".pluralize(total_count)
body = "Added #{commits_text}:\n\n"
body << existing_commit_summary(noteable, existing_commits, oldrev)
body << new_commit_summary(new_commits).join("\n")
create_note(noteable: noteable, project: project, author: author, note: body)
end
# Called when the assignee of a Noteable is changed or removed
#
# noteable - Noteable object
# project - Project owning noteable
# author - User performing the change
# assignee - User being assigned, or nil
#
# Example Note text:
#
# "Assignee removed"
#
# "Reassigned to @rspeicher"
#
# Returns the created Note object
def change_assignee(noteable, project, author, assignee)
body = assignee.nil? ? 'Assignee removed' : "Reassigned to #{assignee.to_reference}"
create_note(noteable: noteable, project: project, author: author, note: body)
end
# Called when one or more labels on a Noteable are added and/or removed
#
# noteable - Noteable object
# project - Project owning noteable
# author - User performing the change
# added_labels - Array of Labels added
# removed_labels - Array of Labels removed
#
# Example Note text:
#
# "Added ~1 and removed ~2 ~3 labels"
#
# "Added ~4 label"
#
# "Removed ~5 label"
#
# Returns the created Note object
def change_label(noteable, project, author, added_labels, removed_labels)
labels_count = added_labels.count + removed_labels.count
references = ->(label) { label.to_reference(format: :id) }
added_labels = added_labels.map(&references).join(' ')
removed_labels = removed_labels.map(&references).join(' ')
body = ''
if added_labels.present?
body << "added #{added_labels}"
body << ' and ' if removed_labels.present?
end
if removed_labels.present?
body << "removed #{removed_labels}"
end
body << ' ' << 'label'.pluralize(labels_count)
body = body.capitalize
create_note(noteable: noteable, project: project, author: author, note: body)
end
# Called when the milestone of a Noteable is changed
#
# noteable - Noteable object
# project - Project owning noteable
# author - User performing the change
# milestone - Milestone being assigned, or nil
#
# Example Note text:
#
# "Milestone removed"
#
# "Miletone changed to 7.11"
#
# Returns the created Note object
def change_milestone(noteable, project, author, milestone)
body = 'Milestone '
body += milestone.nil? ? 'removed' : "changed to #{milestone.to_reference(project)}"
create_note(noteable: noteable, project: project, author: author, note: body)
end
# Called when the status of a Noteable is changed
#
# noteable - Noteable object
# project - Project owning noteable
# author - User performing the change
# status - String status
# source - Mentionable performing the change, or nil
#
# Example Note text:
#
# "Status changed to merged"
#
# "Status changed to closed by bc17db76"
#
# Returns the created Note object
def change_status(noteable, project, author, status, source)
body = "Status changed to #{status}"
body << " by #{source.gfm_reference(project)}" if source
create_note(noteable: noteable, project: project, author: author, note: body)
end
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# Called when 'merge when build succeeds' is executed
def merge_when_build_succeeds(noteable, project, author, last_commit)
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body = "Enabled an automatic merge when the build for #{last_commit.to_reference(project)} succeeds"
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create_note(noteable: noteable, project: project, author: author, note: body)
end
# Called when 'merge when build succeeds' is canceled
def cancel_merge_when_build_succeeds(noteable, project, author)
body = 'Canceled the automatic merge'
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create_note(noteable: noteable, project: project, author: author, note: body)
end
def remove_merge_request_wip(noteable, project, author)
body = 'Unmarked this merge request as a Work In Progress'
create_note(noteable: noteable, project: project, author: author, note: body)
end
def add_merge_request_wip(noteable, project, author)
body = 'Marked this merge request as a **Work In Progress**'
create_note(noteable: noteable, project: project, author: author, note: body)
end
def self.resolve_all_discussions(merge_request, project, author)
body = "Resolved all discussions"
create_note(noteable: merge_request, project: project, author: author, note: body)
end
# Called when the title of a Noteable is changed
#
# noteable - Noteable object that responds to `title`
# project - Project owning noteable
# author - User performing the change
# old_title - Previous String title
#
# Example Note text:
#
# "Title changed from **Old** to **New**"
#
# Returns the created Note object
def change_title(noteable, project, author, old_title)
new_title = noteable.title.dup
old_diffs, new_diffs = Gitlab::Diff::InlineDiff.new(old_title, new_title).inline_diffs
marked_old_title = Gitlab::Diff::InlineDiffMarker.new(old_title).mark(old_diffs, mode: :deletion, markdown: true)
marked_new_title = Gitlab::Diff::InlineDiffMarker.new(new_title).mark(new_diffs, mode: :addition, markdown: true)
body = "Changed title: **#{marked_old_title}** → **#{marked_new_title}**"
create_note(noteable: noteable, project: project, author: author, note: body)
end
# Called when the confidentiality changes
#
# issue - Issue object
# project - Project owning the issue
# author - User performing the change
#
# Example Note text:
#
# "Made the issue confidential"
#
# Returns the created Note object
def change_issue_confidentiality(issue, project, author)
body = issue.confidential ? 'Made the issue confidential' : 'Made the issue visible'
create_note(noteable: issue, project: project, author: author, note: body)
end
# Called when a branch in Noteable is changed
#
# noteable - Noteable object
# project - Project owning noteable
# author - User performing the change
# branch_type - 'source' or 'target'
# old_branch - old branch name
# new_branch - new branch nmae
#
# Example Note text:
#
# "Target branch changed from `Old` to `New`"
#
# Returns the created Note object
def change_branch(noteable, project, author, branch_type, old_branch, new_branch)
body = "#{branch_type} branch changed from `#{old_branch}` to `#{new_branch}`".capitalize
create_note(noteable: noteable, project: project, author: author, note: body)
end
# Called when a branch in Noteable is added or deleted
#
# noteable - Noteable object
# project - Project owning noteable
# author - User performing the change
# branch_type - :source or :target
# branch - branch name
# presence - :add or :delete
#
# Example Note text:
#
# "Restored target branch `feature`"
#
# Returns the created Note object
def change_branch_presence(noteable, project, author, branch_type, branch, presence)
verb =
if presence == :add
'restored'
else
'deleted'
end
body = "#{verb} #{branch_type.to_s} branch `#{branch}`".capitalize
create_note(noteable: noteable, project: project, author: author, note: body)
end
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# Called when a branch is created from the 'new branch' button on a issue
# Example note text:
#
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# "Started branch `201-issue-branch-button`"
def new_issue_branch(issue, project, author, branch)
h = Gitlab::Routing.url_helpers
link = h.namespace_project_compare_url(project.namespace, project, from: project.default_branch, to: branch)
body = "Started branch [`#{branch}`](#{link})"
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create_note(noteable: issue, project: project, author: author, note: body)
end
# Called when a Mentionable references a Noteable
#
# noteable - Noteable object being referenced
# mentioner - Mentionable object
# author - User performing the reference
#
# Example Note text:
#
# "Mentioned in #1"
#
# "Mentioned in !2"
#
# "Mentioned in 54f7727c"
#
# See cross_reference_note_content.
#
# Returns the created Note object
def cross_reference(noteable, mentioner, author)
return if cross_reference_disallowed?(noteable, mentioner)
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gfm_reference = mentioner.gfm_reference(noteable.project)
note_options = {
project: noteable.project,
author: author,
note: cross_reference_note_content(gfm_reference)
}
if noteable.kind_of?(Commit)
note_options.merge!(noteable_type: 'Commit', commit_id: noteable.id)
else
note_options.merge!(noteable: noteable)
end
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if noteable.is_a?(ExternalIssue)
noteable.project.issues_tracker.create_cross_reference_note(noteable, mentioner, author)
else
create_note(note_options)
end
end
def cross_reference?(note_text)
note_text.start_with?(cross_reference_note_prefix)
end
# Check if a cross-reference is disallowed
#
# This method prevents adding a "Mentioned in !1" note on every single commit
# in a merge request. Additionally, it prevents the creation of references to
# external issues (which would fail).
#
# noteable - Noteable object being referenced
# mentioner - Mentionable object
#
# Returns Boolean
def cross_reference_disallowed?(noteable, mentioner)
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return true if noteable.is_a?(ExternalIssue) && !noteable.project.jira_tracker_active?
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return false unless mentioner.is_a?(MergeRequest)
return false unless noteable.is_a?(Commit)
mentioner.commits.include?(noteable)
end
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# Check if a cross reference to a noteable from a mentioner already exists
#
# This method is used to prevent multiple notes being created for a mention
# when a issue is updated, for example. The method also calls notes_for_mentioner
# to check if the mentioner is a commit, and return matches only on commit hash
# instead of project + commit, to avoid repeated mentions from forks.
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#
# noteable - Noteable object being referenced
# mentioner - Mentionable object
#
# Returns Boolean
def cross_reference_exists?(noteable, mentioner)
# Initial scope should be system notes of this noteable type
notes = Note.system.where(noteable_type: noteable.class)
if noteable.is_a?(Commit)
# Commits have non-integer IDs, so they're stored in `commit_id`
notes = notes.where(commit_id: noteable.id)
else
notes = notes.where(noteable_id: noteable.id)
end
notes_for_mentioner(mentioner, noteable, notes).count > 0
end
# Build an Array of lines detailing each commit added in a merge request
#
# new_commits - Array of new Commit objects
#
# Returns an Array of Strings
def new_commit_summary(new_commits)
new_commits.collect do |commit|
"* #{commit.short_id} - #{escape_html(commit.title)}"
end
end
# Called when the status of a Task has changed
#
# noteable - Noteable object.
# project - Project owning noteable
# author - User performing the change
# new_task - TaskList::Item object.
#
# Example Note text:
#
# "Soandso marked the task Whatever as completed."
#
# Returns the created Note object
def change_task_status(noteable, project, author, new_task)
status_label = new_task.complete? ? Taskable::COMPLETED : Taskable::INCOMPLETE
body = "Marked the task **#{new_task.source}** as #{status_label}"
create_note(noteable: noteable, project: project, author: author, note: body)
end
# Called when noteable has been moved to another project
#
# direction - symbol, :to or :from
# noteable - Noteable object
# noteable_ref - Referenced noteable
# author - User performing the move
#
# Example Note text:
#
# "Moved to some_namespace/project_new#11"
#
# Returns the created Note object
def noteable_moved(noteable, project, noteable_ref, author, direction:)
unless [:to, :from].include?(direction)
raise ArgumentError, "Invalid direction `#{direction}`"
end
cross_reference = noteable_ref.to_reference(project)
body = "Moved #{direction} #{cross_reference}"
create_note(noteable: noteable, project: project, author: author, note: body)
end
private
def notes_for_mentioner(mentioner, noteable, notes)
if mentioner.is_a?(Commit)
notes.where('note LIKE ?', "#{cross_reference_note_prefix}%#{mentioner.to_reference(nil)}")
else
gfm_reference = mentioner.gfm_reference(noteable.project)
notes.where(note: cross_reference_note_content(gfm_reference))
end
end
def create_note(args = {})
Note.create(args.merge(system: true))
end
def cross_reference_note_prefix
'Mentioned in '
end
def cross_reference_note_content(gfm_reference)
"#{cross_reference_note_prefix}#{gfm_reference}"
end
# Build a single line summarizing existing commits being added in a merge
# request
#
# noteable - MergeRequest object
# existing_commits - Array of existing Commit objects
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# oldrev - Optional String SHA of a previous Commit
#
# Examples:
#
# "* ea0f8418...2f4426b7 - 24 commits from branch `master`"
#
# "* ea0f8418..4188f0ea - 15 commits from branch `fork:master`"
#
# "* ea0f8418 - 1 commit from branch `feature`"
#
# Returns a newline-terminated String
def existing_commit_summary(noteable, existing_commits, oldrev = nil)
return '' if existing_commits.empty?
count = existing_commits.size
commit_ids = if count == 1
existing_commits.first.short_id
else
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if oldrev && !Gitlab::Git.blank_ref?(oldrev)
"#{Commit.truncate_sha(oldrev)}...#{existing_commits.last.short_id}"
else
"#{existing_commits.first.short_id}..#{existing_commits.last.short_id}"
end
end
commits_text = "#{count} commit".pluralize(count)
branch = noteable.target_branch
branch = "#{noteable.target_project_namespace}:#{branch}" if noteable.for_fork?
"* #{commit_ids} - #{commits_text} from branch `#{branch}`\n"
end
def escape_html(text)
Rack::Utils.escape_html(text)
end
end