Found the reason: "." character is not allowed in env property names on
linux, so this would only work on windows
Cheers
On Saturday, March 5, 2016 at 2:05:18 PM UTC+1, Pierre wrote:
>
> Hello,
>
> Here is the answer to my own question:
>
> val default = ConfigFactory.parseString(
> """
> |a {
> | b = "foo"
> }
> """.stripMargin)
>
> import collection.JavaConversions._
> val conf = ConfigFactory.parseMap(System.getenv(), "env
> variables").withFallback(ConfigFactory.load())
>
> // will display the content of env variable a.b if set, foo otherwise
> println(conf.getString("a.b"))
>
> The issue was that ConfigFactory.systemEnvironment() does not, for some
> reason, do any parsing, so "a.b=x" is not parsed as a { b = x }.
>
> Note that ConfigFactory.systemProperties() *does* parse the properties,
> which explains the different result. I can't explain the inconsistency and
> this looks like a bug to me.
>
> Thanks for nothing ;-)
>
> Pierre
>
>
>
> On Thursday, March 3, 2016 at 7:00:01 PM UTC+1, Pierre wrote:
>>
>> Hello,
>>
>> I am using amazon beanstalk, which allows me to define app parameters
>> using system environment variables.
>>
>> If there was only a few well defined variables I would want to override,
>> the following would be fine:
>>
>> http {
>> port = 8080
>> port = ${?HTTP_PORT}
>> }
>>
>>
>> But there are a lot of parameters to override, and moreover I don't want
>> to have to explicitely define them beforehand.
>>
>> What I'd like would be to use system environment variables just like java
>> properties, meaning to have:
>> set spray.can.server.registration-timeout=5s
>> java -jar application.jar
>> work exactly like:
>> java -Dspray.can.server.registration-timeout=5s -jar application.jar
>>
>> I tried the following:
>>
>> val default = ConfigFactory.parseString(
>> """a {
>> | b = "foo"
>> }
>> """.stripMargin)
>>
>> val conf = ConfigFactory.systemEnvironment().withFallback(default)
>>
>> println(conf.getString("a.b"))
>>
>>
>> which kept printing "foo" even if I defined the environment variable a.b
>> to "bar". I think it doesn't work because withFallback won't override
>> values that are already defined.
>>
>> Do you guys have any idea on how to solve this?
>>
>> Thanks,
>>
>> Pierre
>>
>
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