From e1e4040c1504f15d97ebe256b3289642fd55bb5c Mon Sep 17 00:00:00 2001
From: Christine Dodrill <me@christine.website>
Date: Sat, 15 Feb 2020 13:14:21 +0000
Subject: [PATCH] metrics

---
 Cargo.lock  | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml  |  1 +
 src/main.rs |  5 ++++-
 3 files changed, 54 insertions(+), 1 deletion(-)

diff --git a/Cargo.lock b/Cargo.lock
index f827ef7..8a3a82d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -128,6 +128,12 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37ab347416e802de484e4d03c7316c48f1ecb56574dfd4a46a80f173ce1de04d"
 
+[[package]]
+name = "fnv"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2fad85553e09a6f881f739c29f0b00b0f01357c743266d478b68951ce23285f3"
+
 [[package]]
 name = "fsevent"
 version = "0.4.0"
@@ -478,6 +484,7 @@ dependencies = [
  "pathfinding",
  "rocket",
  "rocket_contrib",
+ "rocket_prometheus",
  "serde",
  "serde_derive",
  "serde_json",
@@ -501,6 +508,32 @@ dependencies = [
  "unicode-xid 0.2.0",
 ]
 
+[[package]]
+name = "prometheus"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5567486d5778e2c6455b1b90ff1c558f29e751fc018130fa182e15828e728af1"
+dependencies = [
+ "cfg-if",
+ "fnv",
+ "lazy_static",
+ "protobuf",
+ "quick-error",
+ "spin",
+]
+
+[[package]]
+name = "protobuf"
+version = "2.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6686ddd96a8dbe2687b5f2a687b2cfb520854010ec480f2d74c32e7c9873d3c5"
+
+[[package]]
+name = "quick-error"
+version = "1.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
+
 [[package]]
 name = "quote"
 version = "0.6.13"
@@ -602,6 +635,16 @@ dependencies = [
  "unicode-xid 0.1.0",
 ]
 
+[[package]]
+name = "rocket_prometheus"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87e4954e976f59c2ef8766aaa65352c8e6776f86cf99943f5f45785dab4160f8"
+dependencies = [
+ "prometheus",
+ "rocket",
+]
+
 [[package]]
 name = "ryu"
 version = "1.0.2"
@@ -672,6 +715,12 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5c2fb2ec9bcd216a5b0d0ccf31ab17b5ed1d627960edff65bbe95d3ce221cefc"
 
+[[package]]
+name = "spin"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
+
 [[package]]
 name = "state"
 version = "0.4.1"
diff --git a/Cargo.toml b/Cargo.toml
index 10931cc..4e66479 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,6 +9,7 @@ edition = "2018"
 [dependencies]
 rocket = "0"
 rocket_contrib = "0"
+rocket_prometheus = "0.3"
 serde = "1.0"
 serde_json = "1.0"
 serde_derive = "1.0"
diff --git a/src/main.rs b/src/main.rs
index adbce66..415d153 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -68,7 +68,7 @@ fn find_path(
     match path {
         None => return None,
         Some(x) => {
-            return Some(x.0);
+            return Some(x.0.iter().rev().cloned().collect());
         }
     }
 }
@@ -154,7 +154,10 @@ fn find_target<'a>(gs: &'a battlesnake::SnakeRequest) -> &'a battlesnake::Coord
 fn main() {
     let map = HashMap::<String, GameState>::new();
     let mutex_map = Mutex::from(map);
+    let prometheus = rocket_prometheus::PrometheusMetrics::new();
     rocket::ignite()
+        .attach(prometheus.clone())
+        .mount("/metrics", prometheus)
         .mount("/", routes![index, start, ping, make_move, end,])
         .manage(mutex_map)
         .launch();