COS: Add dashboard for long-term metrics

[cbartz]

Overview

Add a dashboard with a panel that visualises the number of jobs per day.

The panel would look like this with real data:

Rationale

A separate dashboard is added to allow querying for longer time periods (this is not suitable for the other visualisations as too many data points are queried, resulting in empty panels with errors or high latency before anything is displayed). Note that the current loki-k8s charm uses the default setting of loki, which does not allow querying more than 30 days in the past.

Checklist

• The charm style guide was applied
• The contributing guide was applied
• The changes are compliant with ISD054 - Managing Charm Complexity
• The documentation is generated using src-docs
• The documentation for charmhub is updated.
• The PR is tagged with appropriate label (urgent, trivial, complex)

[cbartz]

@jdkandersson The Draft publish docs job fails because of conflicting content. What do you suggest to solve this problem in this particular case?

[jdkandersson]

@jdkandersson The Draft publish docs job fails because of conflicting content. What do you suggest to solve this problem in this particular case?

The way to do it is to go to discourse and update the content to resolve the conflict. For example, by updating it to the intended content. Just make sure that if there were any community contributions, that we explain why we're changing to docs

[github-actions]

Test coverage for d7a3903

Name                         Stmts   Miss Branch BrPart  Cover   Missing
------------------------------------------------------------------------
src/charm.py                   458    110    117     26    74%   86-88, 112-113, 117-119, 157-159, 169->181, 179, 214-233, 242-243, 257-259, 260->272, 263->272, 296-300, 331, 411-416, 439, 456-457, 466-489, 509-514, 520-523, 530, 533-534, 550, 554-559, 604->607, 620-621, 623-624, 658-665, 689-690, 702-704, 719-720, 748-749, 751-752, 754-755, 829->831, 892-893, 909, 927-929, 933-934, 938
src/charm_state.py             135     18     18      3    85%   131-138, 220-221, 260-262, 273-274, 280-285, 296-298
src/errors.py                   39      0      0      0   100%
src/event_timer.py              45      9      6      1    73%   80, 100-103, 123-126
src/firewall.py                 43     25     10      0    38%   38-42, 64-67, 75-149
src/github_client.py            68      6     32      3    87%   124, 146, 158-165, 183->216
src/github_metrics.py           14      0      0      0   100%
src/github_type.py              50      0      0      0   100%
src/lxd_type.py                 37      0      2      0   100%
src/metrics.py                  73      2     10      1    96%   61->64, 170-171
src/metrics_type.py              6      0      0      0   100%
src/runner.py                  320     70     96     24    73%   44->46, 125, 252-253, 294-303, 327-332, 337, 357, 361-371, 420->423, 426-428, 435, 449, 459, 463, 465, 480, 506-511, 527-540, 551-590, 595, 633, 680-682, 686, 704, 739, 765, 770-782, 796, 801->803, 806-808
src/runner_logs.py              35      2      6      1    93%   62->61, 66-67
src/runner_manager.py          274     47     90      8    82%   122, 167-169, 182-183, 195-197, 203-208, 212-213, 223-224, 243, 286-287, 331-333, 398, 418-422, 447, 499-502, 538, 645-658, 668, 673-684
src/runner_manager_type.py      33      0      6      0   100%
src/runner_metrics.py          123      8     20      2    93%   147-148, 160, 191-192, 307-311
src/runner_type.py              47      0     10      0   100%
src/shared_fs.py               116     16     20      0    88%   108-109, 133-134, 217-218, 241-242, 254-255, 260-261, 267-268, 292-293
src/utilities.py                68      5     20      7    86%   74->76, 78->84, 91, 121, 135, 173, 226
------------------------------------------------------------------------
TOTAL                         1984    318    463     76    81%

Static code analysis report

Run started:2024-01-19 09:48:32.352598

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 4328
  Total lines skipped (#nosec): 0
  Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 12

Run metrics:
  Total issues (by severity):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
  Total issues (by confidence):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
Files skipped (0):