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module Commits
class RevertService < ::BaseService
class ValidationError < StandardError; end
class ReversionError < StandardError; end
def execute
@source_project = params[:source_project] || @project
@target_branch = params[:target_branch]
@commit = params[:commit]
@create_merge_request = params[:create_merge_request].present?
validate and commit
rescue Repository::CommitError, Gitlab::Git::Repository::InvalidBlobName, GitHooksService::PreReceiveError,
ValidationError, ReversionError => ex
error(ex.message)
end
def commit
revert_into = @create_merge_request ? @commit.revert_branch_name : @target_branch
if @create_merge_request
# Temporary branch exists and contains the revert commit
return success if repository.find_branch(revert_into)
create_target_branch
end
unless repository.revert(current_user, @commit, revert_into)
error_msg = "Sorry, we cannot revert this #{params[:revert_type_title]} automatically.
It may have already been reverted, or a more recent commit may have updated some of its content."
raise ReversionError, error_msg
end
success
end
private
def create_target_branch
result = CreateBranchService.new(@project, current_user)
.execute(@commit.revert_branch_name, @target_branch, source_project: @source_project)
if result[:status] == :error
raise ReversionError, "There was an error creating the source branch: #{result[:message]}"
end
end
def validate
allowed = ::Gitlab::GitAccess.new(current_user, project).can_push_to_branch?(@target_branch)
unless allowed
raise_error('You are not allowed to push into this branch')
end
true
end
end
end
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