Show latest build info in jobs view

This does N+1 queries where N is the number of jobs.

db/builder_db.ml

@@ -358,6 +358,25 @@ module Build = struct
            ORDER BY start_d DESC, start_ps DESC
         |}
 
+  let get_latest =
+    Caqti_request.find_opt
+      id
+      Caqti_type.(tup3
+                   id
+                   Meta.t
+                   file_opt)
+      {| SELECT b.id,
+           b.uuid, b.start_d, b.start_ps, b.finish_d, b.finish_ps,
+           b.result_kind, b.result_code, b.result_msg,
+           b.main_binary, b.job,
+           a.filepath, a.localpath, a.sha256
+         FROM build b
+         LEFT JOIN build_artifact a ON
+           a.build = b.id AND b.main_binary = a.filepath
+         WHERE b.job = ?
+         ORDER BY start_d DESC, start_ps DESC
+         LIMIT 1
+      |}
 
   let add =
     Caqti_request.exec

db/builder_db.mli

@@ -124,6 +124,9 @@ sig
     (id, id * Meta.t, [ `Many | `One | `Zero ]) Caqti_request.t
   val get_all_meta_by_name :
     (string, id * Meta.t * file option, [ `Many | `One | `Zero ]) Caqti_request.t
+  val get_latest :
+    (id, id * Meta.t * file option, [< `Many | `One | `Zero > `One `Zero ])
+      Caqti_request.t
   val add : (t, unit, [< `Many | `One | `Zero > `Zero ]) Caqti_request.t
 end
 

lib/builder_web.ml

@@ -73,15 +73,34 @@ let authorized t handler = fun req ->
 
 let routes t =
   let builder _req =
-    let+ jobs = Caqti_lwt.Pool.use Model.jobs t.pool in
+    let* jobs = Caqti_lwt.Pool.use Model.jobs t.pool in
     match jobs with
     | Error e ->
       Log.warn (fun m -> m "Error getting jobs: %a" pp_error e);
       Response.of_plain_text ~status:`Internal_server_error
         "Error getting jobs"
+      |> Lwt.return
     | Ok jobs ->
-      List.sort String.compare jobs
-      |> Views.builder |> Response.of_html
+      let+ jobs =
+        List.fold_right
+          (fun (job_id, job_name) r ->
+             r >>= fun acc ->
+             Caqti_lwt.Pool.use (Model.build_meta job_id) t.pool >>= function
+             | Some (latest_build, latest_artifact) ->
+               Lwt_result.return ((job_name, latest_build, latest_artifact) :: acc)
+             | None ->
+               Log.warn (fun m -> m "Job without builds: %s" job_name);
+               Lwt_result.return acc)
+          jobs
+          (Lwt_result.return [])
+      in
+      match jobs with
+      | Error e ->
+        Log.warn (fun m -> m "Error getting jobs: %a" pp_error e);
+        Response.of_plain_text ~status:`Internal_server_error
+          "Error getting jobs"
+      | Ok jobs ->
+        Views.builder jobs |> Response.of_html
   in
 
   let job req =

lib/model.ml

@@ -45,6 +45,10 @@ let build uuid (module Db : CONN) =
   Db.find_opt Builder_db.Build.get_by_uuid uuid >>=
   not_found
 
+let build_meta job (module Db : CONN) =
+  Db.find_opt Builder_db.Build.get_latest job >|=
+  Option.map (fun (_id, meta, file) -> (meta, file))
+
 let build_exists uuid (module Db : CONN) =
   Db.find_opt Builder_db.Build.get_by_uuid uuid >|=
   Option.is_some
@@ -61,8 +65,7 @@ let job job (module Db : CONN) =
   List.map (fun (_id, meta, main_binary) -> (meta, main_binary))
 
 let jobs (module Db : CONN) =
-  Db.collect_list Builder_db.Job.get_all () >|=
-  List.map snd
+  Db.collect_list Builder_db.Job.get_all ()
 
 let user username (module Db : CONN) =
   Db.find_opt Builder_db.User.get_user username >|=

lib/model.mli

@@ -11,6 +11,9 @@ val build_artifacts : Builder_db.id -> Caqti_lwt.connection ->
 val build : Uuidm.t -> Caqti_lwt.connection ->
   (Builder_db.id * Builder_db.Build.t, [> error ]) result Lwt.t
 
+val build_meta : Builder_db.id -> Caqti_lwt.connection ->
+  ((Builder_db.Build.Meta.t * Builder_db.file option) option, [> error ]) result Lwt.t
+
 val build_exists : Uuidm.t -> Caqti_lwt.connection ->
   (bool, [> error ]) result Lwt.t
 
@@ -21,7 +24,7 @@ val job : string -> Caqti_lwt.connection ->
   ((Builder_db.Build.Meta.t * Builder_db.file option) list, [> error ]) result Lwt.t
 
 val jobs : Caqti_lwt.connection ->
-  (string list, [> error ]) result Lwt.t
+  ((Builder_db.id * string) list, [> error ]) result Lwt.t
 
 val user : string -> Caqti_lwt.connection ->
   (Builder_web_auth.user_info option, [> error ]) result Lwt.t

lib/views.ml

@@ -86,12 +86,34 @@ let builder jobs =
         txtf "We have currently %d jobs."
           (List.length jobs);
       ];
-      ul (List.map (fun job ->
-          li [
-            a ~a:[a_href ("job/" ^ job ^ "/")]
-              [txt job];
-          ])
-          jobs);
+      ul (List.map (fun (job_name, latest_build, latest_artifact) ->
+          li ([
+              a ~a:[a_href ("job/" ^ job_name ^ "/")]
+                [txt job_name];
+              txt " ";
+              check_icon latest_build.Builder_db.Build.Meta.result;
+              br ();
+              a ~a:[a_href (Fmt.strf "job/%s/build/%a/" job_name Uuidm.pp
+                              latest_build.Builder_db.Build.Meta.uuid)]
+                [txtf "%a" (Ptime.pp_human ()) latest_build.Builder_db.Build.Meta.start];
+              txt " ";
+            ] @ match latest_artifact with
+            | Some main_binary ->
+              [
+                a ~a:[a_href (Fmt.strf
+                                "job/%s/build/%a/f/%a"
+                                job_name
+                                Uuidm.pp latest_build.Builder_db.Build.Meta.uuid
+                                Fpath.pp main_binary.Builder_db.filepath)]
+                  [txtf "%s" (Fpath.basename main_binary.Builder_db.filepath)];
+                txt " ";
+                code [txtf "SHA256:%a" Hex.pp (Hex.of_cstruct main_binary.Builder_db.sha256)];
+              ]
+            | None ->
+              [
+                txtf "Build failed";
+              ]))
+        jobs);
     ]
 
 let job name builds =