u-siem-elasticsearch-0.0.10 doesn't have any documentation.
usiem-elasticsearch
Input and Ouput logging components for uSIEM
ElasticSearch Output
First of all, this is a simple component that needs a lot of improvement.
// The configuration must be inside the code to reduce human errors in configuration files
let config = ElasticOuputConfig ;
let mut es_output = new;
// Configure component: register data schema...
//...
// Register the component in the kernel, it will be responsible for autoscaling and starting copies of the component
kernel.add_output;
// The kernel is a work in progress so it's not available