refactor: Re-export crates used by the ioxd_common macros

This allows the consumers of the macros to avoid including the
dependencies themselves, which they otherwise wouldn't need to.

Cargo.lock

@@ -2512,6 +2512,7 @@ dependencies = [
  "dml",
  "flate2",
  "futures",
+ "generated_types",
  "hashbrown 0.12.0",
  "http",
  "hyper",
@@ -2528,12 +2529,14 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_urlencoded",
+ "service_grpc_testing",
  "snafu",
  "tokio",
  "tokio-stream",
  "tokio-util 0.7.1",
  "tonic",
  "tonic-health",
+ "tonic-reflection",
  "tower",
  "trace",
  "trace_exporters",

ioxd_common/Cargo.toml

@@ -10,12 +10,14 @@ edition = "2021"
 clap_blocks = { path = "../clap_blocks" }
 data_types = { path = "../data_types" }
 dml = { path = "../dml" }
+generated_types = { path = "../generated_types" }
 metric = { path = "../metric" }
-observability_deps = { path = "../observability_deps" }
-predicate = { path = "../predicate" }
-pprof = { version = "0.8", default-features = false, features = ["flamegraph", "prost-codec"], optional = true }
 metric_exporters = { path = "../metric_exporters" }
 mutable_batch_lp = { path = "../mutable_batch_lp" }
+observability_deps = { path = "../observability_deps" }
+pprof = { version = "0.8", default-features = false, features = ["flamegraph", "prost-codec"], optional = true }
+predicate = { path = "../predicate" }
+service_grpc_testing = { path = "../service_grpc_testing" }
 trace = { path = "../trace" }
 trace_exporters = { path = "../trace_exporters" }
 trace_http = { path = "../trace_http" }
@@ -39,10 +41,11 @@ serde_json = "1.0.81"
 serde_urlencoded = "0.7.0"
 snafu = "0.7"
 tokio = { version = "1.18", features = ["macros", "net", "parking_lot", "rt-multi-thread", "signal", "sync", "time"] }
-tokio-util = { version = "0.7.0" }
 tokio-stream = { version = "0.1", features = ["net"] }
+tokio-util = { version = "0.7.0" }
 tonic = "0.7"
 tonic-health = "0.6.0"
+tonic-reflection = "0.4.0"
 tower = "0.4"
 workspace-hack = { path = "../workspace-hack"}
 

ioxd_common/src/lib.rs

@@ -3,6 +3,18 @@ pub mod rpc;
 pub mod server_type;
 mod service;
 
+// These crates are used by the macros we export; provide a stable
+// path to use them from in downstream crates.
+pub mod reexport {
+    pub use generated_types;
+    pub use service_grpc_testing;
+    pub use tokio_stream;
+    pub use tonic;
+    pub use tonic_health;
+    pub use tonic_reflection;
+    pub use trace_http;
+}
+
 pub use service::Service;
 
 use crate::server_type::{CommonServerState, ServerType};

ioxd_common/src/rpc.rs

@@ -49,7 +49,7 @@ macro_rules! add_service {
                 } = $builder;
                 let service = $svc;
 
-                let status = tonic_health::ServingStatus::Serving;
+                let status = $crate::reexport::tonic_health::ServingStatus::Serving;
                 health_reporter
                     .set_service_status(service_name(&service), status)
                     .await;
@@ -75,7 +75,7 @@ macro_rules! add_service {
 macro_rules! setup_builder {
     ($input:ident, $server_type:ident) => {{
         #[allow(unused_imports)]
-        use ioxd_common::{add_service, rpc::RpcBuilder, server_type::ServerType};
+        use $crate::{add_service, rpc::RpcBuilder, server_type::ServerType};
 
         let RpcBuilderInput {
             socket,
@@ -83,14 +83,17 @@ macro_rules! setup_builder {
             shutdown,
         } = $input;
 
-        let (health_reporter, health_service) = tonic_health::server::health_reporter();
-        let reflection_service = tonic_reflection::server::Builder::configure()
-            .register_encoded_file_descriptor_set(generated_types::FILE_DESCRIPTOR_SET)
+        let (health_reporter, health_service) =
+            $crate::reexport::tonic_health::server::health_reporter();
+        let reflection_service = $crate::reexport::tonic_reflection::server::Builder::configure()
+            .register_encoded_file_descriptor_set(
+                $crate::reexport::generated_types::FILE_DESCRIPTOR_SET,
+            )
             .build()
             .expect("gRPC reflection data broken");
 
-        let builder = tonic::transport::Server::builder();
-        let builder = builder.layer(trace_http::tower::TraceLayer::new(
+        let builder = $crate::reexport::tonic::transport::Server::builder();
+        let builder = builder.layer($crate::reexport::trace_http::tower::TraceLayer::new(
             trace_header_parser,
             $server_type.metric_registry(),
             $server_type.trace_collector(),
@@ -106,7 +109,10 @@ macro_rules! setup_builder {
 
         add_service!(builder, health_service);
         add_service!(builder, reflection_service);
-        add_service!(builder, service_grpc_testing::make_server());
+        add_service!(
+            builder,
+            $crate::reexport::service_grpc_testing::make_server()
+        );
 
         builder
     }};
@@ -116,7 +122,7 @@ macro_rules! setup_builder {
 #[macro_export]
 macro_rules! serve_builder {
     ($builder:ident) => {{
-        use tokio_stream::wrappers::TcpListenerStream;
+        use $crate::reexport::tokio_stream::wrappers::TcpListenerStream;
         use $crate::rpc::RpcBuilder;
 
         let RpcBuilder {