JarCastingconfig-inject
config-inject is a library to make it easy to inject configuration data into your classes with Guice and config-magic.
Artifacts are published to Bintray, so use jcenter() in your Gradle dependencies block (or analogous Maven config).
You can stack multiple sources of configuration data.
ConfigModuleBuilder builder = new ConfigModuleBuilder();
// load from a file
builder.addPropertiesFile(new File("/foo/bar"))
// or input stream
.addPropertiesInputStream(getClass().getResourceAsStream("/some/other/config")
// or system properties, or any other commons-configuration Configuration
.addConfiguration(new SystemConfiguration());
Once you've set up your config data, use config-magic to access it. Define a config interface or abstract class:
public interface SomeAppConfig {
@Config("com.app.service.host")
@Default("localhost")
String getHost();
@Config("com.app.service.port")
@Default("1234")
int getPort();
}
Bind up the necessary stuff in Guice:
Guice.createInjector(builder.build(), new AbstractModule() {
@Override
protected void configure() {
ConfigModule.bindConfigBean(binder(), SomeAppConfig.class);
}
});
Now you can inject the config interface into your classes as needed.
class SomeClass {
@Inject
SomeClass(SomeAppConfig config) {
// do something configurable
}
}
