Multiple pods fix

[mgtennant]

Description

Added an entity called Actions, it has two boolean values: updating and hasData. Updating is set to true when a pod starts updating the database and is set to false after the database update has completed. hasData is set to false before updating the database and is set to true after the database update has succeeded.

When a backend pod starts up it checks hasData to see if it needs to fetch initial data for the database. It will only do this immediate update to the database if hasData and updating are both false.

The cron job is currently set to fire once a day. Once one pod starts updating, all other pods will be blocked from doing so until the update job is done. Since the cron job starts at the same time in each pod (plus the random delay) only one of the pods should end up updating the database.

Fixes # (issue)

Type of change

Please delete options that are not relevant.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• [ ] Test A
• [ ] Test B

Checklist

• [ ] I have read the CONTRIBUTING doc
• [ ] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] My changes generate no new warnings
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally with my changes
• [ ] Any dependent changes have already been accepted and merged

Further comments

[github-actions[bot]]

Backend coverage report

Coverage after merging multiple-pods-fix into main will be

25.96%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
src
app.controller.ts	0%	100%	0%	0%	1, 10, 2, 5–6, 9
app.module.ts	0%	0%	100%	0%	1, 10–19, 2, 20–27, 29, 3, 30–32, 32, 32–33, 35, 4, 43, 43, 45, 45–46, 46, 5–7, 75, 8
app.service.ts	0%	100%	0%	0%	1, 13, 2, 5–6, 8
main.ts	0%	0%	0%	0%	1, 15–16, 18, 18, 18–19, 2, 20–21, 23, 3–4, 7–8
src/actions
actions.controller.ts	0%	100%	0%	0%	1, 12–14, 18–19, 2, 23–24, 3–4, 8–9
actions.module.ts	0%	100%	100%	0%	1, 13, 2–5
actions.service.ts	0%	100%	0%	0%	1, 12, 16–18, 2, 22, 26, 3, 30–31, 35–37, 41–44, 46, 48, 53–55, 57, 6, 9
src/actions/dto
action.dto.ts	0%	100%	100%	0%	1
create-action.dto.ts	0%	100%	100%	0%	1–2, 4
update-action.dto.ts	0%	100%	100%	0%	1, 3
src/actions/entities
action.entity.ts	0%	100%	0%	0%	1, 10, 13, 4, 6, 8
src/cron
cron.module.ts	0%	100%	100%	0%	1, 10–19, 2, 20–29, 3, 30–35, 4–7, 78, 8–9
cron.service.ts	0%	0%	0%	0%	1, 10, 100, 107–109, 11, 110–119, 12, 120–122, 124, 13–14, 142, 147, 149, 15, 153–155, 16, 163, 165, 17–18, 185, 189, 19, 190–199, 2, 20, 200–205, 209, 21, 210–215, 217–219, 22, 220–223, 225–229, 23, 230–231, 233–239, 24, 241–247, 249–255, 257–262, 264–270, 272–278, 280–286, 288–294, 296–299, 3, 300–302, 304–310, 312–318, 320–326, 328–334, 336, 340–343, 345–347, 349–351, 353–355, 357–359, 361–363, 365–367, 369–371, 373–375, 377–379, 381–383, 385–387, 389–391, 393–395, 397–399, 4, 401–403, 405, 409, 41, 411, 419–422, 432–435, 44, 46–49, 5, 50–59, 6, 60–62, 67, 67–68, 70–71, 71–73, 78, 8, 80, 82–83, 83, 83–87, 89, 9, 91, 93, 93, 93, 96–98
src/sites
sites.controller.ts	0%	100%	0%	0%	1, 10–11, 14–15, 19, 2, 20, 24–25, 29, 3, 30, 34–35, 39, 4, 40, 5–6
sites.module.ts	0%	100%	100%	0%	1, 13, 2–5
sites.service.ts	0%	100%	0%	0%	1, 10, 13, 17–19, 2, 23, 27, 3, 31–32, 36–39, 4, 41, 43, 48–50, 52
src/sites/dto
create-site.dto.ts	0%	100%	100%	0%	1–2, 4
site.dto.ts	0%	100%	100%	0%	1, 103, 109, 115, 121, 127, 13, 133, 139, 145, 151, 157, 163, 169, 175, 181, 187, 19, 193, 199, 205, 211, 217, 223, 229, 235, 241, 247, 25, 253, 259, 265, 3, 31, 37, 43, 49, 55, 61, 67, 7, 73, 79, 85, 91, 97
update-site.dto.ts	0%	100%	100%	0%	1, 3
src/sites/entities
site.entity.ts	0%	100%	0%	0%	1, 101, 11, 14, 16, 18, 2, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 5, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98
src/sraecass
sraecass.controller.ts	0%	100%	0%	0%	1, 10, 13–14, 18–19, 2, 23–24, 28–29, 3, 33–34, 38–39, 4–5, 9
sraecass.module.ts	0%	100%	100%	0%	1, 13, 2–5
sraecass.service.ts	0%	100%	0%	0%	1, 10, 13, 17–19, 2, 23, 27, 3, 31–32, 36–39, 4, 41, 43, 48–50, 52
src/sraecass/dto
create-sraecass.dto.ts	0%	100%	100%	0%	1–2, 4
sraecass.dto.ts	0%	100%	100%	0%	1
update-sraecass.dto.ts	0%	100%	100%	0%	1, 3
src/sraecass/entities
sraecass.entity.ts	0%	100%	0%	0%	11, 13, 15, 17, 19, 2, 21, 23, 25, 27, 30, 5, 7, 9
src/srapproa
srapproas.controller.ts	0%	100%	0%	0%	1, 10, 13–14, 18–19, 2, 23–24, 28–29, 3, 33–34, 38–39, 4–5, 9
srapproas.module.ts	0%	100%	100%	0%	1, 13, 2–5
srapproas.service.ts	0%	100%	0%	0%	1, 10, 13, 17–19, 2, 23, 27,