Scaffold options for elastic search cmd

src/exporters/elastic.rs

@@ -5,7 +5,14 @@
 
 use crate::exporters::Exporter;
 use crate::sensors::Sensor;
-use clap::ArgMatches;
+use clap::{Arg, ArgMatches};
+
+/// Default url for Elastic endpoint
+const DEFAULT_HOST: &str = "localhost";
+/// Default port for Elastic endpoint
+const DEFAULT_PORT: &str = "9200";
+/// Default scheme for Elastic endpoint
+const DEFAULT_SCHEME: &str = "http";
 
 /// Exporter that pushes metrics to an ElasticSearch endpoint
 pub struct ElasticExporter {
@@ -20,6 +27,67 @@ impl Exporter for ElasticExporter {
     }
 
     fn get_options() -> Vec<clap::Arg<'static, 'static>> {
-        Vec::new()
+        let host = Arg::with_name("host")
+            .default_value(DEFAULT_HOST)
+            .help("FDQN used to join Elastic host")
+            .long("host")
+            .short("h")
+            .required(false)
+            .takes_value(true);
+
+        let port = Arg::with_name("port")
+            .default_value(DEFAULT_PORT)
+            .help("TCP port used to join Elastic host")
+            .long("port")
+            .short("p")
+            .required(false)
+            .takes_value(true);
+
+        let scheme = Arg::with_name("scheme")
+            .default_value(DEFAULT_SCHEME)
+            .help("URL scheme used to join Elastic host")
+            .long("scheme")
+            .short("s")
+            .required(false)
+            .takes_value(true);
+
+        let cloud_id = Arg::with_name("cloud_id")
+            .help("cloud id for Elasticsearch deployment in Elastic Cloud")
+            .long("cloudid")
+            .short("c")
+            .required(false)
+            .takes_value(true);
+
+        let username = Arg::with_name("username")
+            .help("basic auth username")
+            .long("username")
+            .short("U")
+            .required(false)
+            .takes_value(true);
+
+        let password = Arg::with_name("password")
+            .help("basic auth password")
+            .long("password")
+            .short("P")
+            .required(false)
+            .takes_value(true);
+
+        let qemu = Arg::with_name("qemu")
+            .help("Tells scaphandre it is running on a Qemu hypervisor.")
+            .long("qemu")
+            .short("q")
+            .required(false)
+            .takes_value(false);
+
+        let containers = Arg::with_name("containers")
+            .help("Monitor and apply labels for processes running as containers")
+            .long("containers")
+            .short("C")
+            .required(false)
+            .takes_value(false);
+
+        vec![
+            host, port, scheme, cloud_id, username, password, qemu, containers,
+        ]
     }
 }