This is a GitLab time reporting tool.
Works for local gitlab installations.
Uses direct Gitlab database exports to CSV to create data for various time reports.

Preparing data

Exporting data from GitLab

Export GitLab stuff first, call sudo export.sh on your GitLab server

[trehak@gitlab-server ~]$ sudo ./export.sh 
[sudo] password for trehak: 
Exporting users to /tmp/gitlab-export-TMAwib7wqh/users.csv
COPY 95
Exporting issues to /tmp/gitlab-export-TMAwib7wqh/issues.csv
COPY 5687
Exporting labels to /tmp/gitlab-export-TMAwib7wqh/labels.csv
COPY 554
Exporting timelogs to /tmp/gitlab-export-TMAwib7wqh/timelogs.csv
COPY 202
Exporting label_links to /tmp/gitlab-export-TMAwib7wqh/label_links.csv
COPY 7894
Exporting boards to /tmp/gitlab-export-TMAwib7wqh/boards.csv
COPY 51
Exporting projects to /tmp/gitlab-export-TMAwib7wqh/projects.csv
COPY 285
Exporting merge_requests to /tmp/gitlab-export-TMAwib7wqh/merge_requests.csv
COPY 10221
Exporting namespaces to /tmp/gitlab-export-TMAwib7wqh/namespaces.csv
COPY 137
  adding: namespaces.csv (deflated 72%)
  adding: timelogs.csv (deflated 79%)
  adding: label_links.csv (deflated 77%)
  adding: projects.csv (deflated 67%)
  adding: boards.csv (deflated 74%)
  adding: merge_requests.csv (deflated 76%)
  adding: labels.csv (deflated 77%)
  adding: issues.csv (deflated 80%)
  adding: users.csv (deflated 59%)
[trehak@gitlab-server ~]$ ls export.zip
export.zip
[trehak@gitlab-server ~]$ 

Importing data to reporting tool

Upload GitLab exports to reporting backend
curl -F 'file=@export.zip' http://localhost:8080/rest/timelogs/upload

Backend utility endpoints

/rest/timelogs/hasData - any data available? /rest/timelogs/getDataTimestamp - last data upload timestamp /rest/timelogs/getDataTimestamp - last data upload timestamp /rest/timelogs/users - list available user IDs

Report types

Hierarchy reports

Hierarchical reports can be used to produce d3js visualizations:
https://observablehq.com/@d3/nested-treemap
https://observablehq.com/@d3/cascaded-treemap
https://observablehq.com/@d3/treemap
https://observablehq.com/@d3/zoomable-treemap
https://observablehq.com/@d3/zoomable-sunburst

All possible hierarchy components are - NAMESPACE, PROJECT, ISSUE, USER, PRODUCT
To collect PRODUCT info, put product-XXXX in your label descriptions in GitLab, where XXXX is a product name

/rest/timelogs/hierarchyComponents?from=2020-07-01&to=2020-08-01 - returns available hierarchy components for selected time periods

{
  "NAMESPACE" : [ "Project X", "License server", "Document management", "java-projects" ],
  "PROJECT" : [ "Academia", "AladinEU", "GraphQL", "MSAD" ],
  "ISSUE" : [ "[1] Bugfix 1", "[2] New feature", "[3] Cool new feature" ],
  "USER" : [ "George Rehak", "Manuel Bacigalupo", "Juanita Esmeralda Linda" ],
  "PRODUCT" : [ "unknown", "main-stuff", "side-kick" ]
}

/rest/timelogs/hierarchy?from=2020-07-01&to=2020-08-01&elements=NAMESPACE&elements=PROJECT&elements=ISSUE&elements=USER - produces a hierarchical breakdown of work reports by namespace -> project -> issue -> user

/rest/timelogs/hierarchy?from=2020-07-01&to=2020-08-01&elements=PRODUCT&elements=ISSUE&elements=USER - produces a hierarchical breakdown of work reports by product -> issue -> user

etc.

Calendar reports

Produces calendar data view for d3js calendar visualization.
Each day represents contains work details for user (basically visualized timesheet).

https://observablehq.com/@d3/calendar-view

/rest/timelogs/userCalendar/{year}/{userId}

for example /rest/timelogs/userCalendar/2020/31 produces year calendar view for given user, each

Excel reports

/rest/timelogs/timesheet?from=2020-07-01&to=2020-08-01 - produces Excel workbook for give period, one user per sheet