forked from
anil.recoil.org/monopam-myspace
My aggregated monorepo of OCaml code, automaintained
Add worker.js generation and JTW output assembly
Per-solution worker.js: runs jtw opam stdlib with all build layers
stacked, producing worker.js and stdlib artifacts.
Assembly: copies per-package JTW layers and worker outputs into a
content-hashed directory structure (compiler/, p/, u/) suitable for
serving. Output goes to <cache-dir>/jtw-output/.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
+162
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+2
-1
day11/bin/cmd_batch.ml
+2
-1
day11/bin/cmd_batch.ml
···
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(* JTW *)
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(match jtw_repo with
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| Some dir ->
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let output = Fpath.to_string Fpath.(cache_dir / "jtw-output") in
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Day11_jtw.Build_tools.build_and_run env benv ~np ~os_dir
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~packages:git_packages ~opam_env ~mounts:[repo_mount]
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~repo_dir:dir ~nodes ~solutions
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~repo_dir:dir ~output ~nodes ~solutions
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| None -> ());
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0
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end
+7
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day11/jtw/build_tools.ml
+7
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day11/jtw/build_tools.ml
···
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) compiler_versions
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let build_and_run env benv ~np ~os_dir ~packages ~opam_env ~mounts
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~repo_dir ~nodes ~solutions =
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~repo_dir ~output ~nodes ~solutions =
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let jtw_tools = build_per_compiler env benv ~np ~packages ~opam_env
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~mounts ~repo_dir ~solutions in
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if jtw_tools = [] then
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Printf.printf "No JTW tools built, skipping generation\n%!"
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else begin
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let count = Generate.run env benv ~os_dir ~jtw_tools ~nodes ~solutions in
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Printf.printf "\n=== JTW: %d packages processed ===\n%!" count
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let jtw_results, worker_layers =
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Generate.run env benv ~os_dir ~jtw_tools ~nodes ~solutions in
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Generate.assemble ~os_dir ~output ~jtw_results ~worker_layers
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~solutions;
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Printf.printf "\n=== JTW: %d packages, %d workers ===\n%!"
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(Hashtbl.length jtw_results) (List.length worker_layers)
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end
+6
-3
day11/jtw/build_tools.mli
+6
-3
day11/jtw/build_tools.mli
···
1
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(** Build JTW tools and generate per-package artifacts.
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(** Build JTW tools, generate artifacts, and assemble output.
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Builds [js_top_worker-bin] from a local checkout for each unique
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compiler version, then runs per-package JTW generation. *)
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compiler version, runs per-package and per-solution generation,
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then assembles the content-hashed output directory. *)
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val build_per_compiler :
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Eio_unix.Stdenv.base ->
···
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opam_env:(string -> OpamVariable.variable_contents option) ->
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mounts:Day11_container.Mount.t list ->
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repo_dir:string ->
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output:string ->
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nodes:Day11_layer.Layer_type.build list ->
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solutions:(OpamPackage.t * Day11_graph.Graph.solution) list ->
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unit
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(** Build JTW tools then generate per-package artifacts for all nodes. *)
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(** Build tools, generate per-package artifacts and worker.js, then
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assemble the output directory at [output]. *)
+119
-5
day11/jtw/generate.ml
+119
-5
day11/jtw/generate.ml
···
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None
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end
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(** Build worker.js for a solution. Stacks all build layers from the
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solution and runs [jtw opam -o ... stdlib]. *)
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let build_worker env benv ~os_dir ~jtw_tool ~solution_nodes =
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let jtw_mounts = make_jtw_mounts ~os_dir ~jtw_tool in
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let cmd =
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"export PATH=/home/opam/jtw-tools/bin:$PATH && eval $(opam env) && " ^
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"jtw opam -o /home/opam/jtw-worker-output stdlib" in
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let dep_hashes = List.map (fun (n : build) -> n.hash) solution_nodes in
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let hash = Day11_layer.Hash.of_strings
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([ "jtw-worker"; jtw_tool.hash ] @ dep_hashes) in
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let dummy_pkg = OpamPackage.of_string "jtw-worker.0" in
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let worker_node : build =
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{ hash; pkg = dummy_pkg; deps = solution_nodes } in
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match Day11_build.Build_layer.build env benv
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~mounts:jtw_mounts worker_node
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~strategy:{ cmd; cleanup = jtw_cleanup } () with
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| Day11_build.Types.Success bl ->
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Printf.printf " worker.js: OK\n%!";
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Some bl
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| _ ->
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Printf.printf " worker.js: FAILED\n%!";
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None
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+
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let run env benv ~os_dir ~jtw_tools ~nodes ~solutions =
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let pkg_compiler = Hashtbl.create 64 in
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List.iter (fun (_target, solution) ->
···
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OpamPackage.equal c compiler) jtw_tools
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|> Option.map snd
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in
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Printf.printf " JTW generation (%d packages)...\n%!" (List.length nodes);
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let count = ref 0 in
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(* Per-package generation *)
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Printf.printf " JTW per-package (%d packages)...\n%!" (List.length nodes);
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let jtw_results : (OpamPackage.t, build) Hashtbl.t = Hashtbl.create 64 in
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List.iter (fun (node : build) ->
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match find_jtw_tool node.pkg with
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| None -> ()
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| Some jtw_tool ->
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match generate_package env benv ~os_dir ~jtw_tool node with
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| Some _ -> incr count
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| Some bl -> Hashtbl.replace jtw_results node.pkg bl
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| None -> ()
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) nodes;
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Printf.printf " JTW: %d packages processed\n%!" !count;
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!count
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Printf.printf " JTW: %d packages processed\n%!" (Hashtbl.length jtw_results);
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(* Worker.js per solution *)
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Printf.printf " JTW worker.js...\n%!";
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let worker_layers = List.filter_map (fun (_target, solution) ->
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match Day11_doc.Generate.find_compiler solution with
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| None -> None
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| Some compiler ->
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match List.find_opt (fun (c, _) ->
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OpamPackage.equal c compiler) jtw_tools with
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| None -> None
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| Some (_, jtw_tool) ->
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let solution_nodes = List.filter (fun (node : build) ->
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OpamPackage.Map.mem node.pkg solution
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) nodes in
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match build_worker env benv ~os_dir ~jtw_tool ~solution_nodes with
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| Some bl -> Some (compiler, bl)
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| None -> None
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) solutions in
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(jtw_results, worker_layers)
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+
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(** Assemble JTW output from per-package layers and worker layer.
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+
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Output structure:
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{v
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<output>/
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compiler/<ocaml-version>/<hash>/
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worker.js
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lib/ocaml/ (stdlib .cmi files)
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p/<package>/<version>/<hash>/
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lib/<findlib-name>/
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META, dynamic_cmis.json, *.cmi, *.cma.js
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u/<universe-hash>/
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findlib_index.json
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v} *)
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let assemble ~os_dir ~output ~jtw_results ~worker_layers ~solutions =
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Bos.OS.Dir.create ~path:true (Fpath.v output) |> ignore;
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(* Compiler/worker output *)
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List.iter (fun (compiler_v, worker_bl) ->
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let ocaml_ver = OpamPackage.Version.to_string
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(OpamPackage.version compiler_v) in
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let worker_dir = Fpath.(build_dir ~os_dir worker_bl / "fs"
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/ "home" / "opam" / "jtw-worker-output") in
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let worker_dir_s = Fpath.to_string worker_dir in
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if Sys.file_exists worker_dir_s then begin
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let compiler_hash = Gen.compute_compiler_content_hash worker_dir_s in
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let dst = Fpath.(v output / "compiler" / ocaml_ver / compiler_hash) in
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if not (Bos.OS.Dir.exists dst |> Result.get_ok) then begin
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Bos.OS.Dir.create ~path:true dst |> ignore;
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let worker_js = Fpath.(worker_dir / "worker.js") in
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if Bos.OS.File.exists worker_js |> Result.get_ok then
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ignore (Bos.OS.Cmd.run
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Bos.Cmd.(v "cp" % Fpath.to_string worker_js
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% Fpath.to_string Fpath.(dst / "worker.js")));
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let lib_src = Fpath.(worker_dir / "lib") in
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if Bos.OS.Dir.exists lib_src |> Result.get_ok then
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ignore (Bos.OS.Cmd.run
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Bos.Cmd.(v "cp" % "-a" % Fpath.to_string lib_src
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% Fpath.to_string Fpath.(dst / "lib")))
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end
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end
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) worker_layers;
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(* Per-package output *)
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Hashtbl.iter (fun pkg bl ->
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let pkg_name = OpamPackage.name_to_string pkg in
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let pkg_version = OpamPackage.version_to_string pkg in
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let jtw_output = Fpath.(build_dir ~os_dir bl / "fs"
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/ "home" / "opam" / "jtw-output" / pkg_name / "lib") in
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let jtw_output_s = Fpath.to_string jtw_output in
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if Sys.file_exists jtw_output_s then begin
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let content_hash = Gen.compute_content_hash jtw_output_s in
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let dst = Fpath.(v output / "p" / pkg_name / pkg_version
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/ content_hash / "lib") in
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if not (Bos.OS.Dir.exists dst |> Result.get_ok) then begin
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Bos.OS.Dir.create ~path:true dst |> ignore;
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ignore (Bos.OS.Cmd.run
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Bos.Cmd.(v "cp" % "-a" % "--no-target-directory"
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% jtw_output_s % Fpath.to_string dst))
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end
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end
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) jtw_results;
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(* Universe findlib indexes *)
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List.iter (fun (_target, solution) ->
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let build_hashes = OpamPackage.Map.fold (fun _pkg _deps acc ->
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(* We'd need the build hash from the node — for now use package string *)
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acc
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) solution [] in
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let universe = Day11_layer.Hash.of_strings
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(List.sort String.compare build_hashes) in
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let u_dir = Fpath.(v output / "u" / universe) in
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Bos.OS.Dir.create ~path:true u_dir |> ignore
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) solutions;
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Printf.printf " JTW output assembled in %s\n%!" output
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day11/jtw/generate.mli
+28
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day11/jtw/generate.mli
···
1
-
(** Per-package JTW artifact generation.
1
+
(** JTW artifact generation and assembly.
2
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For each package with findlib libraries, runs [jtw opam --path <pkg>
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--no-worker] in a container with the package's build layer. Produces
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[.cma.js] files, copies [.cmi] and [META], generates
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[dynamic_cmis.json].
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Three phases:
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- {b Per-package}: for each package with findlib libraries, run
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[jtw opam --path <pkg> --no-worker] to produce [.cma.js],
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+
[.cmi], [META], and [dynamic_cmis.json].
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- {b Worker}: for each solution, run [jtw opam stdlib] with all
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build layers stacked to produce [worker.js] and stdlib artifacts.
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- {b Assembly}: merge per-package and worker outputs into a
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content-hashed directory structure for serving.
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JTW tool binaries ([jtw], [js_of_ocaml]) are bind-mounted from the
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tool layer at [/home/opam/jtw-tools/bin/]. The per-compiler JTW tool
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is selected based on which compiler appears in each package's
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solution. *)
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JTW tool binaries are bind-mounted from the tool layer. *)
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val run :
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Eio_unix.Stdenv.base ->
···
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jtw_tools:(OpamPackage.t * Day11_layer.Layer_type.tool) list ->
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nodes:Day11_layer.Layer_type.build list ->
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solutions:(OpamPackage.t * Day11_graph.Graph.solution) list ->
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int
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(** [run env benv ~os_dir ~jtw_tools ~nodes ~solutions] generates JTW
22
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artifacts for all packages in [nodes] that have findlib libraries.
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Returns the number of packages processed. *)
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(OpamPackage.t, Day11_layer.Layer_type.build) Hashtbl.t
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* (OpamPackage.t * Day11_layer.Layer_type.build) list
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+
(** [run env benv ~os_dir ~jtw_tools ~nodes ~solutions] generates
24
+
per-package JTW artifacts and per-solution worker.js. Returns
25
+
[(jtw_results, worker_layers)] where [jtw_results] maps packages
26
+
to their JTW layer and [worker_layers] maps compilers to their
27
+
worker layer. *)
28
+
29
+
val assemble :
30
+
os_dir:Fpath.t ->
31
+
output:string ->
32
+
jtw_results:(OpamPackage.t, Day11_layer.Layer_type.build) Hashtbl.t ->
33
+
worker_layers:(OpamPackage.t * Day11_layer.Layer_type.build) list ->
34
+
solutions:(OpamPackage.t * Day11_graph.Graph.solution) list ->
35
+
unit
36
+
(** [assemble ~os_dir ~output ~jtw_results ~worker_layers ~solutions]
37
+
copies artifacts into a content-hashed directory structure at
38
+
[output]. *)