validator: returning empty topology json ready to be filled up from data

validator/src/network/rest/mod.rs

@@ -1,6 +1,7 @@
 use iron::prelude::*;
 use router::Router;
 
+mod models;
 mod routes;
 
 pub struct Api {}

validator/src/network/rest/models/mod.rs

@@ -0,0 +1 @@
+pub mod presence;

validator/src/network/rest/models/presence.rs

@@ -0,0 +1,36 @@
+use serde::{Deserialize, Serialize};
+
+// Topology shows us the current state of the overall Nym network
+#[derive(Serialize, Deserialize, Debug)]
+pub struct Topology {
+    pub validators: Vec<Validator>,
+    pub mix_nodes: Vec<MixNode>,
+    pub service_providers: Vec<ServiceProvider>,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct Validator {
+    host: String,
+    public_key: String,
+    version: String,
+    last_seen: u64,
+    location: String,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct MixNode {
+    host: String,
+    public_key: String,
+    version: String,
+    last_seen: u64,
+    location: String,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct ServiceProvider {
+    host: String,
+    public_key: String,
+    version: String,
+    last_seen: u64,
+    location: String,
+}

validator/src/network/rest/routes/mod.rs

@@ -1,5 +1,4 @@
 use iron::prelude::*;
 use iron::status;
-use router::Router;
 
 pub mod topology;

validator/src/network/rest/routes/topology.rs

@@ -1,11 +1,12 @@
 use super::*;
+use crate::network::rest::models::presence;
 
 pub fn get(req: &mut Request) -> IronResult<Response> {
-    let ref query = req
-        .extensions
-        .get::<Router>()
-        .unwrap()
-        .find("query")
-        .unwrap_or("foomp");
-    Ok(Response::with((status::Ok, *query)))
+    let topology = presence::Topology {
+        mix_nodes: Vec::<presence::MixNode>::new(),
+        service_providers: Vec::<presence::ServiceProvider>::new(),
+        validators: Vec::<presence::Validator>::new(),
+    };
+    let resp = serde_json::to_string_pretty(&topology).unwrap();
+    Ok(Response::with((status::Ok, resp)))
 }