include lots of changes that went missing by accident

pageserver/data_api/build.rs

@@ -1,7 +1,7 @@
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     // Generate rust code from .proto protobuf.
     tonic_build::configure()
-        .bytes(&["."])
+        .bytes(["."])
         .compile_protos(&["proto/page_service.proto"], &["proto"])
         .unwrap_or_else(|e| panic!("failed to compile protos {:?}", e));
     Ok(())

pageserver/data_api/proto/page_service.proto

@@ -17,8 +17,12 @@ service PageService {
   // Returns size of a relation, as # of blocks
   rpc RelSize (RelSizeRequest) returns (RelSizeResponse);
 
+  // Fetches a page.
   rpc GetPage (GetPageRequest) returns (GetPageResponse);
 
+  // Streaming GetPage protocol.
+  rpc GetPages (stream GetPageRequest) returns (stream GetPageResponse);
+
   // Returns total size of a database, as # of bytes
   rpc DbSize (DbSizeRequest) returns (DbSizeResponse);