track rendering duration in footer

src/engine/mod.rs

@@ -1,6 +1,6 @@
 use std::collections::HashSet;
 use std::sync::Arc;
-use std::time::Duration;
+use std::time::{Duration, Instant};
 
 use failure::Error;
 use futures::Future;
@@ -46,7 +46,8 @@ impl Engine {
 }
 
 pub struct AnalyzeDependenciesOutcome {
-    pub crates: Vec<(CrateName, AnalyzedDependencies)>
+    pub crates: Vec<(CrateName, AnalyzedDependencies)>,
+    pub duration: Duration
 }
 
 impl AnalyzeDependenciesOutcome {
@@ -70,6 +71,8 @@ impl Engine {
     pub fn analyze_dependencies(&self, repo_path: RepoPath) ->
         impl Future<Item=AnalyzeDependenciesOutcome, Error=Error>
     {
+        let start = Instant::now();
+
         let entry_point = RelativePath::new("/").to_relative_path_buf();
         let manifest_future = CrawlManifestFuture::new(self, repo_path, entry_point);
 
@@ -81,7 +84,13 @@ impl Engine {
                 analyzed_deps_future.map(move |analyzed_deps| (crate_name, analyzed_deps))
             });
 
-            join_all(futures).map(|crates| AnalyzeDependenciesOutcome { crates })
+            join_all(futures).map(move |crates| {
+                let duration = start.elapsed();
+
+                AnalyzeDependenciesOutcome {
+                    crates, duration
+                }
+            })
         })
     }
 

src/server/views/html/error.rs

@@ -14,6 +14,6 @@ pub fn render(title: &str, descr: &str) -> Response {
                 }
             }
         }
-        (super::render_footer())
+        (super::render_footer(None))
     })
 }

src/server/views/html/index.rs

@@ -50,6 +50,6 @@ pub fn render(popular: Vec<Repository>) -> Response {
         section class="section" {
             div class="container" (popular_table(popular))
         }
-        (super::render_footer())
+        (super::render_footer(None))
     })
 }

src/server/views/html/mod.rs

@@ -1,4 +1,5 @@
 use std::env;
+use std::time::Duration;
 
 use hyper::Response;
 use hyper::header::ContentType;
@@ -53,7 +54,9 @@ fn render_navbar() -> Markup {
     }
 }
 
-fn render_footer() -> Markup {
+fn render_footer(duration: Option<Duration>) -> Markup {
+    let duration_millis = duration.map(|d| d.as_secs() * 1000 + (d.subsec_nanos() / 1000 / 1000) as u64);
+
     html! {
         footer class="footer" {
             div class="container" {
@@ -69,6 +72,9 @@ fn render_footer() -> Markup {
                         a href="https://github.com/srijs/deps.rs/issues" "issue tracker"
                         "."
                     }
+                    @if let Some(millis) = duration_millis {
+                        p class="has-text-grey is-size-7" (format!("(rendered in {} ms)", millis))
+                    }
                 }
             }
         }

src/server/views/html/status.rs

@@ -107,7 +107,7 @@ fn render_failure(repo_path: RepoPath) -> Markup {
                 }
             }
         }
-        (super::render_footer())
+        (super::render_footer(None))
     }
 }
 
@@ -153,7 +153,7 @@ fn render_success(analysis_outcome: AnalyzeDependenciesOutcome, repo_path: RepoP
                 }
             }
         }
-        (super::render_footer())
+        (super::render_footer(Some(analysis_outcome.duration)))
     }
 }