In Karaf, is there a way for a bundle to read a properties file from another bundle?
I have bundle1, which contains some classes that bundle2 uses (bundle1 exports the package containing those classes in its maven pom via maven-bundle-plugin and bundle2 imports it). But bundle2 also needs to use a properties file from bundle1. Is there a way that in addition to classes, bundle2 can access a file from bundle1?
From what I've read, one option is to deploy the properties to the karaf etc folder via the features file and then it can be accessed from bundle2 via blueprint. I would like to avoid that if possible, as bundle1 is currently not deployed as a feature. So hoping for an alternate approach.
The nicest way is to wrap the access through a class of bundle1. Assume bundle1 contains a class named MyClass. Inside this class you can do this.getClass().getResourceAsStream(path). The path is relative to the package of the class.
So a method of this class could return an Inputstream for the properties file or allow access to the actual properties.
In fact you can also access the properties file from bundle2. Simply use MyClass.getResourceAsStream(path) from a class in bundle2. This works as each class is by default loaded by the classloader of the bundle it resides in.