Default value for profiles in Spring Boot - spring

Question

I have multiple profiles and there are lots of attributes(which will grow), I don't want to set each attribute every time in a different profile.
I have an application.yml file like this:
freemarker:
template-loader-path: classpath:/templates
datasource:
username: postgres
password: mypass
driver-class-name: org.postgresql.Driver
jpa:
show-sql: true
properties:
hibernate:
jdbc:
lob:
non_contextual_creation: true
dialect: org.hibernate.dialect.PostgreSQLDialect
hibernate:
ddl-auto: create
security:
secret: "jwt_secret_key_it_is_a_random_key_229"
loginTokenExpiration: 86400
confirmUserTokenExpiration: 86400
devTokenExpiration: 157680000
tokenPrefix: "Bearer"
headerString: "Authorization"
signUpUrl: "/token/login"
mysite:
apiTosUrl: "https://example.com/api-tos"
fromEmail: "alert#example.com"
firstFreeCredits: 10
junction:
port: 9080
hasBasicAuth: false
---
spring:
profiles:
active: dev
---
spring:
profiles: stage
jpa:
show-sql: true
hibernate:
ddl-auto: update
chargeBee:
site: "example.chargebee.com"
apiKey: "mykey"
---
spring:
profiles: prod
datasource:
url: jdbc:postgresql://localhost/myproddb
jpa:
show-sql: false
hibernate:
ddl-auto: update
chargeBee:
site: "example.chargebee.com"
apiKey: "myapikey"
Most of the settings are common between profiles, and which are not common, I have re-defined it in the corresponding section of the profile.
I am assuming that the first section in this YAML document fills the properties with default values and the corresponding sections overwrite it.
Is this approach correct? If not then how to have an inheritance of properties values such that I define the common value once and for the rest of the profiles, I only need to define the different values?

Answer 1

you can also achieve profile using create the different profile-specific yml file.
you can also be defined by using the following naming convention:
application-{profile}.yml
Create application.yml file. This file loaded first. Load all attribute of application.yml file.
Check any active profile found(yes stage) then load after successfully load default profile then load application-stage.yml file and override existing attribute and add the new attribute.
spring:
profiles:
active: stage
datasource:
url: jdbc:postgresql://localhost:5432/springbootdb
create application-stage.yml file same location of application.yml.
spring:
jpa:
show-sql: true
hibernate:
ddl-auto: update
chargeBee:
site: "example.chargebee.com"
apiKey: "mykey"
create application-prod.yml file same location of application.yml.
spring:
datasource:
url: jdbc:postgresql://localhost/myproddb
jpa:
show-sql: false
hibernate:
ddl-auto: update
chargeBee:
site: "example.chargebee.com"
apiKey: "myapikey"

Answer 2

Yes that correct approach to define multiple profiles
You can specify multiple profile-specific YAML documents in a single
file by using a spring.profiles key to indicate when the document
applies, as shown in the following example:
See official document 24.6.3 Multi-profile YAML Documents
In the below example, if the development profile is active, the server.address property is 127.0.0.1. Similarly, if the production profile is active, the server.address property is 192.168.1.120. If the development and production profiles are not enabled, then the value for the property is 192.168.1.100.
server:
address: 192.168.1.100
---
spring:
profiles: development
server:
address: 127.0.0.1
---
spring:
profiles: production
server:
address: 192.168.1.120