[build] Disentangle r2*.c++, memory-cache.c++ from io target

- Mark tools:dump_api_ast as no-downstream – this target is expensive and
  serves no purpose for the downstream build.
- Disable default dependencies for tracing to drop superfluous crate and match
  downstream

deps/rust/cargo.bzl

@@ -5,6 +5,8 @@ load("@rules_rust//crate_universe:defs.bzl", "crate")
 
 # We prefer single-digit dependencies to stay up to date as much as possible
 PACKAGES = {
+    # When adding packages here, please only enable features as needed to keep compile times and
+    # binary sizes bounded.
     "anyhow": crate.spec(version = "1"),
     "capnp": crate.spec(version = "0"),
     "capnpc": crate.spec(version = "0"),
@@ -19,5 +21,5 @@ PACKAGES = {
     "serde_json": crate.spec(version = "1"),
     "serde": crate.spec(version = "1", features = ["derive"]),
     "tokio": crate.spec(version = "1", features = ["net", "process", "signal", "rt", "rt-multi-thread", "time"]),
-    "tracing": crate.spec(version = "0"),
+    "tracing": crate.spec(version = "0", default_features = False, features = ["std"]),
 }

deps/rust/crates/BUILD.cssparser-macros-0.6.1.bazel

@@ -43,6 +43,6 @@ rust_proc_macro(
     version = "0.6.1",
     deps = [
         "@crates_vendor__quote-1.0.37//:quote",
-        "@crates_vendor__syn-2.0.82//:syn",
+        "@crates_vendor__syn-2.0.85//:syn",
     ],
 )

deps/rust/crates/BUILD.cxxbridge-cmd-1.0.128.bazel

@@ -50,7 +50,7 @@ rust_library(
         "@crates_vendor__codespan-reporting-0.11.1//:codespan_reporting",
         "@crates_vendor__proc-macro2-1.0.89//:proc_macro2",
         "@crates_vendor__quote-1.0.37//:quote",
-        "@crates_vendor__syn-2.0.82//:syn",
+        "@crates_vendor__syn-2.0.85//:syn",
     ],
 )
 
@@ -91,6 +91,6 @@ rust_binary(
         "@crates_vendor__codespan-reporting-0.11.1//:codespan_reporting",
         "@crates_vendor__proc-macro2-1.0.89//:proc_macro2",
         "@crates_vendor__quote-1.0.37//:quote",
-        "@crates_vendor__syn-2.0.82//:syn",
+        "@crates_vendor__syn-2.0.85//:syn",
     ],
 )

deps/rust/crates/BUILD.cxxbridge-macro-1.0.128.bazel

@@ -44,6 +44,6 @@ rust_proc_macro(
     deps = [
         "@crates_vendor__proc-macro2-1.0.89//:proc_macro2",
         "@crates_vendor__quote-1.0.37//:quote",
-        "@crates_vendor__syn-2.0.82//:syn",
+        "@crates_vendor__syn-2.0.85//:syn",
     ],
 )

deps/rust/crates/BUILD.derive_more-0.99.18.bazel

@@ -73,6 +73,6 @@ rust_proc_macro(
         "@crates_vendor__convert_case-0.4.0//:convert_case",
         "@crates_vendor__proc-macro2-1.0.89//:proc_macro2",
         "@crates_vendor__quote-1.0.37//:quote",
-        "@crates_vendor__syn-2.0.82//:syn",
+        "@crates_vendor__syn-2.0.85//:syn",
     ],
 )

deps/rust/crates/BUILD.serde_derive-1.0.213.bazel

@@ -47,6 +47,6 @@ rust_proc_macro(
     deps = [
         "@crates_vendor__proc-macro2-1.0.89//:proc_macro2",
         "@crates_vendor__quote-1.0.37//:quote",
-        "@crates_vendor__syn-2.0.82//:syn",
+        "@crates_vendor__syn-2.0.85//:syn",
     ],
 )

deps/rust/crates/BUILD.syn-2.0.82.bazel → deps/rust/crates/BUILD.syn-2.0.85.bazel

@@ -37,7 +37,6 @@ rust_library(
         "parsing",
         "printing",
         "proc-macro",
-        "visit-mut",
     ],
     crate_root = "src/lib.rs",
     edition = "2021",
@@ -51,7 +50,7 @@ rust_library(
         "noclippy",
         "norustfmt",
     ],
-    version = "2.0.82",
+    version = "2.0.85",
     deps = [
         "@crates_vendor__proc-macro2-1.0.89//:proc_macro2",
         "@crates_vendor__quote-1.0.37//:quote",

deps/rust/crates/BUILD.thiserror-impl-1.0.65.bazel

@@ -44,6 +44,6 @@ rust_proc_macro(
     deps = [
         "@crates_vendor__proc-macro2-1.0.89//:proc_macro2",
         "@crates_vendor__quote-1.0.37//:quote",
-        "@crates_vendor__syn-2.0.82//:syn",
+        "@crates_vendor__syn-2.0.85//:syn",
     ],
 )

deps/rust/crates/BUILD.tracing-0.1.40.bazel

@@ -29,16 +29,10 @@ rust_library(
         ],
     ),
     crate_features = [
-        "attributes",
-        "default",
         "std",
-        "tracing-attributes",
     ],
     crate_root = "src/lib.rs",
     edition = "2018",
-    proc_macro_deps = [
-        "@crates_vendor__tracing-attributes-0.1.27//:tracing_attributes",
-    ],
     rustc_flags = [
         "--cap-lints=allow",
     ],

deps/rust/crates/BUILD.zerocopy-derive-0.7.35.bazel

@@ -44,6 +44,6 @@ rust_proc_macro(
     deps = [
         "@crates_vendor__proc-macro2-1.0.89//:proc_macro2",
         "@crates_vendor__quote-1.0.37//:quote",
-        "@crates_vendor__syn-2.0.82//:syn",
+        "@crates_vendor__syn-2.0.85//:syn",
     ],
 )

deps/rust/crates/defs.bzl

@@ -1324,12 +1324,12 @@ def crate_repositories():
 
     maybe(
         http_archive,
-        name = "crates_vendor__syn-2.0.82",
-        sha256 = "83540f837a8afc019423a8edb95b52a8effe46957ee402287f4292fae35be021",
+        name = "crates_vendor__syn-2.0.85",
+        sha256 = "5023162dfcd14ef8f32034d8bcd4cc5ddc61ef7a247c024a33e24e1f24d21b56",
         type = "tar.gz",
-        urls = ["https://static.crates.io/crates/syn/2.0.82/download"],
-        strip_prefix = "syn-2.0.82",
-        build_file = Label("@workerd//deps/rust/crates:BUILD.syn-2.0.82.bazel"),
+        urls = ["https://static.crates.io/crates/syn/2.0.85/download"],
+        strip_prefix = "syn-2.0.85",
+        build_file = Label("@workerd//deps/rust/crates:BUILD.syn-2.0.85.bazel"),
     )
 
     maybe(
@@ -1392,16 +1392,6 @@ def crate_repositories():
         build_file = Label("@workerd//deps/rust/crates:BUILD.tracing-0.1.40.bazel"),
     )
 
-    maybe(
-        http_archive,
-        name = "crates_vendor__tracing-attributes-0.1.27",
-        sha256 = "34704c8d6ebcbc939824180af020566b01a7c01f80641264eba0999f6c2b6be7",
-        type = "tar.gz",
-        urls = ["https://static.crates.io/crates/tracing-attributes/0.1.27/download"],
-        strip_prefix = "tracing-attributes-0.1.27",
-        build_file = Label("@workerd//deps/rust/crates:BUILD.tracing-attributes-0.1.27.bazel"),
-    )
-
     maybe(
         http_archive,
         name = "crates_vendor__tracing-core-0.1.32",

src/workerd/api/BUILD.bazel

@@ -13,8 +13,9 @@ filegroup(
             "encoding.c++",
             "html-rewriter.c++",
             "hyperdrive.c++",
-            "pyodide.c++",
             "pyodide/pyodide.c++",
+            "memory-cache.c++",
+            "r2*.c++",
             "rtti.c++",
             "url.c++",
             "util.c++",
@@ -34,7 +35,10 @@ filegroup(
             "encoding.h",
             "html-rewriter.h",
             "hyperdrive.h",
+            "memory-cache.h",
+            "pyodide/pyodide.h",
             "modules.h",
+            "r2*.h",
             "rtti.h",
             "url.h",
             "util.h",
@@ -43,6 +47,33 @@ filegroup(
     visibility = ["//visibility:public"],
 )
 
+wd_cc_library(
+    name = "r2",
+    srcs = glob(["r2*.c++"]),
+    hdrs = glob(["r2*.h"]),
+    implementation_deps = [
+        "//src/workerd/api:r2-api_capnp",
+    ],
+    visibility = ["//visibility:public"],
+    deps = [
+        "//src/workerd/io",
+    ],
+)
+
+wd_cc_library(
+    name = "memory-cache",
+    srcs = ["memory-cache.c++"],
+    hdrs = ["memory-cache.h"],
+    implementation_deps = [
+        "//src/workerd/io",
+    ],
+    visibility = ["//visibility:public"],
+    deps = [
+        "//src/workerd/jsg",
+        "//src/workerd/util:uuid",
+    ],
+)
+
 wd_cc_library(
     name = "rtti",
     srcs = ["rtti.c++"],
@@ -56,6 +87,9 @@ wd_cc_library(
     deps = [
         ":html-rewriter",
         ":hyperdrive",
+        ":memory-cache",
+        ":pyodide",
+        ":r2",
         "//src/pyodide",
         "//src/pyodide:pyodide_extra_capnp",
         "//src/workerd/api/node",
@@ -112,7 +146,6 @@ kj_test(
     src = "pyodide/pyodide-test.c++",
     deps = [
         ":pyodide",
-        "//src/workerd/tests:test-fixture",
     ],
 )
 

src/workerd/api/memory-cache.h

@@ -1,6 +1,5 @@
 #pragma once
 
-#include <workerd/io/trace.h>
 #include <workerd/jsg/jsg.h>
 #include <workerd/util/uuid.h>
 
@@ -12,6 +11,10 @@
 
 #include <set>
 
+namespace workerd {
+class SpanBuilder;
+}
+
 namespace workerd::api {
 
 // The MemoryCache mechanism is an in-process, memory-resident data cache that

src/workerd/io/BUILD.bazel

@@ -100,7 +100,6 @@ wd_cc_library(
         "//src/workerd/api:data-url",
         "//src/workerd/api:deferred-proxy",
         "//src/workerd/api:encoding",
-        "//src/workerd/api:r2-api_capnp",
         "//src/workerd/api:url",
         "//src/workerd/jsg",
         "//src/workerd/util:autogate",