feat: send report data to Slack

[betodealmeida]

SUMMARY

Send embedded report data (see #15805) to Slack when user selects "TEXT" as the format.

When the user selects "TEXT" format and Slack delivery for a chart on a report, we send a truncated table to the channel. Slack limits the pre-formatted text to approximately 25 rows, so the table is truncated at 19 rows.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Has associated issue:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #15806 (d2174d9) into master (3adf8e8) will decrease coverage by 0.05%.
The diff coverage is 55.26%.

❗ Current head d2174d9 differs from pull request most recent head 925d688. Consider uploading reports for the commit 925d688 to get more accurate results

@@            Coverage Diff             @@
##           master   #15806      +/-   ##
==========================================
- Coverage   76.83%   76.78%   -0.06%     
==========================================
  Files         988      988              
  Lines       52195    52321     +126     
  Branches     7095     7124      +29     
==========================================
+ Hits        40106    40173      +67     
- Misses      11864    11923      +59     
  Partials      225      225              

Flag	Coverage Δ
mysql	81.49% <86.36%> (-0.04%)	⬇️
postgres	81.56% <86.36%> (+0.05%)	⬆️
python	81.65% <86.36%> (+<0.01%)	⬆️
sqlite	81.16% <86.36%> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...-frontend/src/components/CronPicker/CronPicker.tsx	91.66% <ø> (ø)
superset-frontend/src/views/CRUD/alert/types.ts	100.00% <ø> (ø)
...set-frontend/src/views/CRUD/data/database/types.ts	100.00% <ø> (ø)
superset-frontend/src/views/CRUD/hooks.ts	47.80% <0.00%> (-0.43%)	⬇️
superset/annotation_layers/annotations/api.py	84.96% <ø> (ø)
superset/reports/logs/api.py	94.11% <ø> (ø)
...c/views/CRUD/data/database/DatabaseModal/index.tsx	44.89% <20.83%> (-2.69%)	⬇️
...c/views/CRUD/data/database/DatabaseModal/styles.ts	81.57% <25.00%> (-2.06%)	⬇️
.../database/DatabaseModal/DatabaseConnectionForm.tsx	54.00% <28.57%> (-9.10%)	⬇️
...et-frontend/src/dashboard/components/Dashboard.jsx	78.84% <50.00%> (-0.57%)	⬇️
... and 14 more

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[john-bodley]

You will have to update the requirements. Additionally strict pinning of packages in setup.py is undesirable as it may overly constrain the frozen solution space. Please use limits if strictly necessary.

[betodealmeida]

@john-bodley I did run pip-compile-multi --no-upgrade, you can see that requirements/base.txt was updated to include the dependency (it has no additional dependencies of its own).

Also, my understanding is that it's better to pin the version for dependencies with version 0.x, since there's no guarantee that a minor upgrade will maintain backwards compatibility (https://semver.org/#spec-item-4).