node-pg-migrate | Node.js database migration management for Postgresql | Data Migration library
kandi X-RAY | node-pg-migrate Summary
kandi X-RAY | node-pg-migrate Summary
Node.js database migration management for Postgresql
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QUESTION
I have a node.js app that uses PostgreSQL as a database.
When I try to run a migration file (using node-pg-migrate package), I keep getting an error: Another migration is already running
.
Below is the piece of source code of the package that's throwing the error.
I've tried running these commands manually and both of them return false
:
ANSWER
Answered 2022-Jan-28 at 18:33Someone else holds the lock. Figure out who and why, and maybe terminate that backend.
pg_try_advisory_lock returns false because it can't get the lock as someone else already holds it, and it is not willing to wait because that is what try
means here.
pg_advisory_unlock returns false because you can't release other sessions locks, only your own.
You can't find any blocking queries because there are none. That is what the try
means: don't block, just immediately return false. If there is no one being blocked, then there is no one doing the blocking.
Modify your query to look for who is holding advisory locks, even if they are not blocking anyone:
QUESTION
For migration management, I've decided to use Prisma Migrate
instead of node-pg-migrate
(PostgreSQL). I followed the instructions in this link and everything works fine. However, the main challenge is that my integration tests fail when trying to run migrations on the test database (not the develop database). How can I override the configurations of my test database?
In node-pg-migrate
I could simply provide configurations before running the integration test:
ANSWER
Answered 2021-Apr-06 at 06:09You can override the entire connection string directly in your test setup as follows. Prisma reads the DB string from environment variables so overriding in the following manner will work fine.
QUESTION
I am pretty new to this whole subject, so excuse me if those are silly questions. I want to run unit tests in Docker containers like so:
- Start up a Postgres container with no tables/data
- Run the DB migration (I am using node-pg-migrate) to create all the tables
- Populate the DB with test data
- Start a Node container with my service
- Run the unit tests
- Drop the database
- Shut down/delete all containers (except if there were errors)
I am currently struggling running the migration. I create the service image FROM
my prod image and RUN npm install --only=dev
. My docker-compose.yml
looks like this:
ANSWER
Answered 2020-Mar-25 at 20:33I couldn't test this, but here's the idea:
- have a
docker-entrypoint.sh
script in the same folder as Dockerfile
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