Hi guys, how would you switch between datasource (eg: mysql

Question

Java

YohannesTz

Hi guys, how would you switch between datasource (eg: mysql

or postgres) types based on a command line argument or environment. I am using spring-boot with jpa?

0

24.07.2023

7 ответов

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YohannesTz Автор вопроса

Alireza dHb
do you want to switch between different dbms?

yes. based on either command line argument or application.properties file

0

24.07.2023

Alireza dHb

YohannesTz
yes. based on either command line argument or appl...

well for mysql and postgres everything is the same except the protocol in spring.datasource.url i guess you can just set that with different values based on your environment

0

24.07.2023

Dmytro Buryak

Alireza gave you correct suggestion, but I guess you don't understand a full picture yet without example. So, here it is. I recommend to use env vars, it's more universal approach, and the least effort one. To deploy it with mysql: export SRPING_DATASOURCE_URL='jdbc:mysql://.......' export SPRING_DATASOURCE_USERNAME='mysql-user' export SPRING_DATASOURCE_PASSWORD='mysql-password' # .... and so on java my-app.jar Same exactly app, no rebuild: export SRPING_DATASOURCE_URL='jdbc:postgresql://.......' export SPRING_DATASOURCE_USERNAME='pg-user' export SPRING_DATASOURCE_PASSWORD='pg-password' # .... and so on java my-app.jar

0

25.07.2023

Dmytro Buryak

If you don't like default SB mechanism to resolving env vars to spring config properties, you can make aliases like: spring.datasource.url=${DB_URL:jdbc:mysql://localhost:3306.....} spring.datasource.username=${DB_USER:default-local-dev-user} spring.datasource.password=${DB_PASSWORD:default-local-dev-passwd} And then your env var names will be shorter: export DB_URL='jdbc:mysql://.......' export DB_USERNAME='mysql-user' export DB_PASSWORD='mysql-password' # .... and so on java my-app.jar

0

25.07.2023

Dmytro Buryak

That's the documentation for default SB env vars binding mechanism https://docs.spring.io/spring-boot/docs/current/reference/html/features.html#features.external-config.typesafe-configuration-properties.relaxed-binding.environment-variables And in general, it's worth to get familiar with SB config mechanism https://docs.spring.io/spring-boot/docs/current/reference/html/features.html#features.external-config

0

25.07.2023

YohannesTz Автор вопроса

Dmytro Buryak
If you don't like default SB mechanism to resolvin...

actually I ended up doing the same thing. I am passing the dialect, platform and db credentials from an environment. and worked like a charm. thank you so much

0

25.07.2023

Alireza dHb · Accepted Answer

Alireza dHb

do you want to switch between different dbms?

0

24.07.2023

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Hi guys, how would you switch between datasource (eg: mysql

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