Commit graph

7 commits

Author SHA1 Message Date
GitLab Bot
b41cd8cb92 Add latest changes from gitlab-org/gitlab@master 2019-12-04 18:08:46 +00:00
Nick Thomas
013f7cd24c
Inherit from ApplicationRecord instead of ActiveRecord::Base 2019-03-28 16:18:23 +00:00
gfyoung
15b878e27e Enable more frozen string in app/models/**/*.rb
Partially addresses #47424.
2018-08-07 00:37:36 -07:00
Timothy Andrew
71d4bf721b Implement (some) comments from @DouweM's review.
- Move things common to `Issue` and `MergeRequest` into `Issuable`
- Move more database-specific functions into `Gitlab::Database`
- Indentation changes and other minor refactorings.
2016-09-20 18:13:11 +05:30
Timothy Andrew
8957293d9b Implement review comments from @yorickpeterse
1. Change multiple updates to a single `update_all`

2. Use cascading deletes

3. Extract an average function for the database median.

4. Move database median to `lib/gitlab/database`

5. Use `delete_all` instead of `destroy_all`

6. Minor refactoring
2016-09-20 16:05:25 +05:30
Timothy Andrew
ba25e2f1ac Improve performance of the cycle analytics page.
1. These changes bring down page load time for 100 issues from more than
   a minute to about 1.5 seconds.

2. This entire commit is composed of these types of performance
   enhancements:

     - Cache relevant data in `IssueMetrics` wherever possible.
     - Cache relevant data in `MergeRequestMetrics` wherever possible.
     - Preload metrics

3. Given these improvements, we now only need to make 4 SQL calls:

    - Load all issues
    - Load all merge requests
    - Load all metrics for the issues
    - Load all metrics for the merge requests

4. A list of all the data points that are now being pre-calculated:

    a. The first time an issue is mentioned in a commit

      - In `GitPushService`, find all issues mentioned by the given commit
        using `ReferenceExtractor`. Set the `first_mentioned_in_commit_at`
        flag for each of them.

      - There seems to be a (pre-existing) bug here - files (and
        therefore commits) created using the Web CI don't have
        cross-references created, and issues are not closed even when
        the commit title is "Fixes #xx".

    b. The first time a merge request is deployed to production

      When a `Deployment` is created, find all merge requests that
      were merged in before the deployment, and set the
      `first_deployed_to_production_at` flag for each of them.

    c. The start / end time for a merge request pipeline

      Hook into the `Pipeline` state machine. When the `status` moves to
      `running`, find the merge requests whose tip commit matches the
      pipeline, and record the `latest_build_started_at` time for each
      of them. When the `status` moves to `success`, record the
      `latest_build_finished_at` time.

    d. The merge requests that close an issue

      - This was a big cause of the performance problems we were having
        with Cycle Analytics. We need to use `ReferenceExtractor` to make
        this calculation, which is slow when we have to run it on a large
        number of merge requests.

      - When a merge request is created, updated, or refreshed, find the
        issues it closes, and create an instance of
        `MergeRequestsClosingIssues`, which acts as a join model between
        merge requests and issues.

      - If a `MergeRequestsClosingIssues` instance links a merge request
        and an issue, that issue closes that merge request.

5. The `Queries` module was changed into a class, so we can cache the
   results of `issues` and `merge_requests_closing_issues` across
   various cycle analytics stages.

6. The code added in this commit is untested. Tests will be added in the
   next commit.
2016-09-15 14:53:02 +05:30
Timothy Andrew
516c838a18 Add an Issue::Metrics model.
- And store the `first_associated_with_milestone_at` and
  `first_added_to_board_at` times, when an issue is saved.
2016-08-26 16:27:37 +05:30