spring - (Too) complex configuration management (Java properties) -

i'm working @ company having (too) complex configuration management process:

• in each module there application.properties file. there properties developers like: database.host = localhost
• properties change in other environments maintained in application.properties file in override-properties folder (for each module) like: database.host=@dbhost@
• there default-deployment.properties file default values other environments like: database.host=novalueconfigured.db_host
• a postconfigure.properties file database_ host=@configure.db_host@

those files needed if property value depends on environments (is different development, testing, live).

• finally there excel document sheet every environment , row like: configure.db_host - a comment ... - 127.0.0.1 (just example). excel responsible generating correct property files rpm packages.

this process not complex error prone. how simplified/improved?

the approach should compatbiel spring di.

i start master configuration file , generate properties files start with.

ultimately have set of proprties files can deployed in environments e.g.

database.host = localhost database.host.prod = proddb1 database.host.uat = uatdb1 

i.e. use environment/host/region/service @ end search path. has advantage can see variations between environments.

you can implement collect this

public class searchproperties extends properties {     private final list<string> searchlist;      public searchproperties(list<string> searchlist) {         this.searchlist = searchlist;     }      @override     public string getproperty(string key) {         (string s : searchlist) {             string property = super.getproperty(key + "." + s);             if (property != null)                 return property;         }         return super.getproperty(key);     } 

you might construct like

properties prop = new searchproperties(arrays.aslist(servername, environment)); 

this way, if there match server, override, environment overidden default.

in java 8 can do

public string getproperty(string key) {     return searchlist.stream()             .map(s -> key + "." + s)             .map(super::getproperty)             .filter(s -> s != null)             .findfirst()             .orelseget(()-> super.getproperty(key)); }