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Can I host JSON file in Spring Cloud Config Server?

We are using Spring Cloud Config Server to host all configurations for our Spring Boot applications. We want a huge JSON text to be fetched from the config server.

Our current approach is to define json text as property value

myproperty.jsontext="{'name':'value'}"

Apart from defining the JSON text as the property value, is there a way to host it and fetch it from the config server?

Does Spring Cloud Configuration Server support .json file?

Update (additional question):

Is it possible to access the searchLocations property like this?

@Value("${spring.cloud.config.server.native.searchLocations}

while keeping the following error:

Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.cloud.config.server.native.searchLocations' in string value "${spring.cloud.config.server.native.searchLocations}"
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4 answers


I've posted support for Spring Boot features at https://github.com/spring-projects/spring-boot/issues/4027#issuecomment-144649875 . Let me know if this works for you ...



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public class JsonPropertySourceLoader implements PropertySourceLoader {


    private static final String JSON = "json";

    @Override
    public final String[] getFileExtensions() {
        return new String[] { JSON };
    }

    @Override
    public PropertySource<?> load(final String name,
        final Resource resource, final String profile) {

         final Map<String, Object> source = process(resource);
         return new MapPropertySource(name, source);
    }

    @SuppressWarnings("unchecked")
    private Map<String, Object> process(final Resource resource) {
        Map<String, Object> map = null;
        try {
            map = new ObjectMapper()
                .readValue(resource.getFile(), LinkedHashMap.class);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        return map;
    }

}


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it is possible to serve archive files. It boils down to using an endpoint /{name}/{profile}/{label}/{path}

with {path}

which is the actual filename ... So, for example, /a-bootiful-client/default/master/myjson.json

will give you the contents of a file. However, by default, there will be no response content type application/json

, but text/html;charset=UTF-8

.

However, it will also work with "Accept: application / json":

curl -H "Accept: application/json" http://localhost:8888/a-bootiful-client/default/master/a-bootiful-client.json
{
        "propName":"propValue"
}

See documentation here: http://cloud.spring.io/spring-cloud-static/spring-cloud-config/1.4.3.RELEASE/single/spring-cloud-config.html#_serving_plain_text

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Bypass

Since it yaml

is a subset Json

, you can store the content Json

inside the file yaml

.

  • Create q config.yaml file
  • Add Json content to it
  • Request a file in yaml

    , Json

    and properties

    , and everything will work!

I tested this approach while integrating an existing Node.js application into the Config Service where all the configs were in a file .json

. So, I just renamed them and added them to Config Repo.

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