Add database migrations

[avalonche]

📝 Summary

Adding database migrations as go files for dynamic table names. Tested with local docker Postgres db.

⛱ Motivation and Context

Resolves Issue #203

📚 References

To run:

./boost-relay tool migrate

which automates the migration process. It is placed under the tool command for now but happy to move it out to a new command e.g. ./boost-relay migrate.

---

✅ I have run these commands

• make lint
• make test-race
• go mod tidy
• I have seen and agree to CONTRIBUTING.md

[codecov-commenter]

Codecov Report

Merging #224 (5d8ed25) into main (23ea413) will increase coverage by 0.05%.
The diff coverage is 19.32%.

@@            Coverage Diff             @@
##             main     #224      +/-   ##
==========================================
+ Coverage   23.91%   23.97%   +0.05%     
==========================================
  Files          19       19              
  Lines        2383     2440      +57     
==========================================
+ Hits          570      585      +15     
- Misses       1732     1774      +42     
  Partials       81       81              

Flag	Coverage Δ
unittests	23.97% <19.32%> (+0.05%)	⬆️

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

Impacted Files	Coverage Δ
common/types.go	0.00% <0.00%> (ø)
database/mockdb.go	0.00% <0.00%> (ø)
database/database.go	13.55% <27.05%> (+3.43%)	⬆️

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[metachris]

That's great!

Should this PR also remove database/schema.go?

[avalonche]

there's still some code in database relying on schema.go. I have replaced with migrations on startup.

[metachris]

the table where the migration status is saved also needs the prefix! currently it's saving into "gorp_migrations", but should be "PREFIX_migrations"

[metachris]

Why have a function here at all, instead of just var Migration001InitDatabase = migrate.Migration{...?

[metachris]

thank you very much!