Cleanup of unused struct

CHANGELOG.md

@@ -12,6 +12,7 @@
 - wallet: the wallet backend learned how to keep track of validator name, either hardcoded or by querying the status endpoint.
 - mixnet-contract: Replace all naked `-` with `saturating_sub`.
 - mixnet-contract: Added ClaimOperatorReward and ClaimDelegatorReward messages ([#1292])
+- mixnode: Added basic mixnode hardware reporting to the HTTP API.
 - vesting-contract: Added ClaimOperatorReward and ClaimDelegatorReward messages ([#1292])
 - validator-api: add Swagger to document the REST API ([#1249]).
 - validator-api: add `estimated_node_profit` and `estimated_operator_cost` to `reward-estimate` endpoint ([#1284])

Cargo.lock

@@ -1140,6 +1140,16 @@ dependencies = [
  "cipher 0.4.3",
 ]
 
+[[package]]
+name = "cupid"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8bad352a84b567cc38a5854e3aa8ee903cb8519a25d0b799b739bafffd1f91a1"
+dependencies = [
+ "gcc",
+ "rustc_version 0.2.3",
+]
+
 [[package]]
 name = "curve25519-dalek"
 version = "3.2.0"
@@ -2001,6 +2011,12 @@ dependencies = [
  "tungstenite",
 ]
 
+[[package]]
+name = "gcc"
+version = "0.3.55"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f5f3913fa0bfe7ee1fd8248b6b9f42a5af4b9d65ec2dd2c3c26132b950ecfc2"
+
 [[package]]
 name = "generator"
 version = "0.7.0"
@@ -3155,6 +3171,7 @@ dependencies = [
  "colored",
  "config",
  "crypto",
+ "cupid",
  "dirs",
  "dotenv",
  "futures",
@@ -3173,6 +3190,7 @@ dependencies = [
  "rocket",
  "serde",
  "serial_test",
+ "sysinfo",
  "tokio",
  "tokio-util 0.6.9",
  "toml",
@@ -5495,6 +5513,21 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "sysinfo"
+version = "0.24.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a6a8e71535da31837213ac114531d31def75d7aebd133264e420a3451fa7f703"
+dependencies = [
+ "cfg-if 1.0.0",
+ "core-foundation-sys",
+ "libc",
+ "ntapi",
+ "once_cell",
+ "rayon",
+ "winapi",
+]
+
 [[package]]
 name = "tap"
 version = "1.0.1"

mixnode/Cargo.toml

@@ -19,6 +19,7 @@ rust-version = "1.58.1"
 bs58 = "0.4.0"
 clap = { version = "3.0.10", features = ["cargo", "derive"] }
 colored = "2.0"
+cupid = "0.6.1"
 dirs = "3.0"
 dotenv = "0.15.0"
 futures = "0.3.0"
@@ -28,6 +29,7 @@ pretty_env_logger = "0.4.0"
 rand = "0.7.3"
 rocket = { version="0.5.0-rc.1", features = ["json"] }
 serde = { version="1.0", features = ["derive"] }
+sysinfo = "0.24.1"
 tokio = { version="1.8", features = ["rt-multi-thread", "net", "signal"] }
 tokio-util = { version="0.6.7", features = ["codec"] }
 toml = "0.5.8"

mixnode/src/node/http/hardware.rs

@@ -0,0 +1,57 @@
+use rocket::serde::{json::Json, Serialize};
+use sysinfo::{System, SystemExt};
+
+#[derive(Serialize)]
+#[serde(crate = "rocket::serde")]
+pub(crate) struct Hardware {
+    ram: String,
+    num_cores: usize,
+    crypto_hardware: Option<CryptoHardware>,
+}
+
+#[derive(Serialize)]
+#[serde(crate = "rocket::serde")]
+pub(crate) struct CryptoHardware {
+    aesni: bool,
+    processor: String,
+    sgx: bool,
+}
+
+/// Provides hardware information which Nym can use to optimize mixnet speed over time (memory, crypto hardware, CPU, cores, etc).
+#[get("/hardware")]
+pub(crate) fn hardware() -> Json<Hardware> {
+    Json(hardware_info())
+}
+
+/// Gives back a summary report of whatever system hardware info we can get for this platform.
+fn hardware_info() -> Hardware {
+    let crypto_hardware = hardware_info_from_cupid();
+    hardware_from_sysinfo(crypto_hardware)
+}
+
+/// Sysinfo gives back basic stuff like number of CPU cores and available memory. If available, this includes the hardware encryption
+/// extensions report
+fn hardware_from_sysinfo(crypto_hardware: Option<CryptoHardware>) -> Hardware {
+    let mut system = System::new_all();
+    let total_memory = system.free_memory();
+    system.refresh_all();
+    let ram = format!("{}KB", total_memory);
+    let cores = system.cpus();
+    let num_cores = cores.len();
+    Hardware {
+        crypto_hardware,
+        ram,
+        num_cores,
+    }
+}
+
+/// The `cupid` crate gives back a report on available hardware encryption extensions which may be useful for future mixnet optimizations.
+///
+/// Note: this information is generally only available on x86 platforms for Linux.
+fn hardware_info_from_cupid() -> Option<CryptoHardware> {
+    cupid::master().map(|info| CryptoHardware {
+        aesni: info.aesni(),
+        processor: info.brand_string().unwrap().to_string(),
+        sgx: info.sgx(),
+    })
+}

mixnode/src/node/http/mod.rs

@@ -1,4 +1,5 @@
 pub(crate) mod description;
+pub(crate) mod hardware;
 pub(crate) mod stats;
 pub(crate) mod verloc;
 

mixnode/src/node/mod.rs

@@ -6,6 +6,7 @@ use crate::config::persistence::pathfinder::MixNodePathfinder;
 use crate::config::Config;
 use crate::node::http::{
     description::description,
+    hardware::hardware,
     not_found,
     stats::stats,
     verloc::{verloc as verlocRoute, VerlocState},
@@ -139,7 +140,7 @@ impl MixNode {
         tokio::spawn(async move {
             rocket::build()
                 .configure(config)
-                .mount("/", routes![verlocRoute, description, stats])
+                .mount("/", routes![verlocRoute, description, stats, hardware])
                 .register("/", catchers![not_found])
                 .manage(verloc_state)
                 .manage(descriptor)