CODEWITHSUNDEEP
javajerseyenvironment-variablesdropwizard
Konstantin
Konstantin

Reputation: 77

Dropwizard Environement variables

I am having problems finding good resources for the dropwizard environment configuration, the manuals from dropwizard are not really helpful for me.

I am trying to save my jwtSecret in my configuration config.yml as a environment variable so it stays a secret even if I make my code open source as

jwtSecret: ${JWT_SECRET}

I have read the manuals and I know I need to add SubstitutingSourceProvider to successfully substitute the config with my environment variables. However I do not find where to save my environment variables. Is there a specific place where dropwizard finds it or do I need to add the path to the environment variables somewhere?

Upvotes: 1

Views: 1899

Answers (1)

Jenneth
Jenneth

Reputation: 371

I'm not entirely sure which part you need help with, but adding environmental variables touches many points.

First we enable this feature by adding it to the Application's initialize function:

bootstrap.setConfigurationSourceProvider(new SubstitutingSourceProvider(bootstrap.getConfigurationSourceProvider(), new EnvironmentVariableSubstitutor(false)));

Then there is the config.yml:

jwtSecret: ${JWT_SECRET}

To access the variable in your application, you need to add this to the Application's Configuration class:

private String jwtSecret;

(+ getter and setter for it)

And lastly you need to add the JWT_SECRET variable to your system environmental variables. This varies based on which operating system you are using and whether you want to set it temporarily or permanently.

Upvotes: 3

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