CP-26352 Port xcp-idl/network interface from Camlp4 to PPX

1. all types deriving from rpcty
2. remove redundent rpc functions, replace them with `@@default` rewriter
3. rename `Basic` of `string_of_port_kind` to `Basic_port`
4. change type `ipv4_route_t` from list to a struct type
5. move exception definition to xcp-networkd
6. declare interface with new style code by using `Idl.declare`
7. replace optional parameter with position parameter or position option
parameter, remove the redundent suffix unit parameter accordingly
8. replace `rpc_of_x` and `x_of_rpc` with `Rpcmarshal.marshal` and `Rpamarshal.unmarshal`
9. update jbuilder file, remove redundant contents

Signed-off-by: Yang Qian <yang.qian@citrix.com>

network/jbuild

@@ -15,42 +15,27 @@ let flags = function
     in
     go ic ""
 
+let rewriters_ppx = ["ppx_deriving_rpc"]
+
 let coverage_rewriter =
   let is_coverage = try Unix.getenv "BISECT_ENABLE" = "YES" with Not_found -> false in
   if is_coverage then
     "(preprocess (pps (bisect_ppx -conditional)))"
   else
-    ""
-
-let rewriters_camlp4 = ["rpclib.idl -syntax camlp4o"]
-let rewriters_ppx = ["ppx_deriving_rpc"; "ppx_sexp_conv"]
+    Printf.sprintf "(preprocess (pps (%s)))" (String.concat " " rewriters_ppx)
 
 let () = Printf.ksprintf Jbuild_plugin.V1.send {|
 (jbuild_version 1)
 
-(library
- ((name xcp_network_interface)
-  (public_name xcp.network.interface)
-  (modules (network_interface))
-  (flags (:standard -w -39 %s))
-  (libraries
-   (rpclib
-    threads
-    xcp))
-  (wrapped false)
-  %s))
-
 (library
  ((name xcp_network)
   (public_name xcp.network)
-  (modules (:standard \ network_interface))
   (flags (:standard -w -39-33 %s))
   (libraries
    (rpclib
     threads
-    xcp
-    xcp_network_interface))
+    xcp))
   (wrapped false)
   %s))
 
-|} (flags rewriters_camlp4) coverage_rewriter (flags rewriters_ppx) coverage_rewriter
+|} (flags rewriters_ppx) coverage_rewriter

network/network_client.ml

@@ -12,9 +12,6 @@
  * GNU Lesser General Public License for more details.
  *)
 
-open Network_interface
-open Xcp_client
-
 let retry_econnrefused f =
   let rec loop () =
     let result =
@@ -28,16 +25,16 @@ let retry_econnrefused f =
     | None -> loop () in
   loop ()
 
-module Client = Network_interface.Client(struct
-    let rpc call =
-      retry_econnrefused
-        (fun () ->
-           if !use_switch
-           then json_switch_rpc !queue_name call
-           else xml_http_rpc
-               ~srcstr:(Xcp_client.get_user_agent ())
-               ~dststr:"network"
-               Network_interface.uri
-               call
-        )
-  end)
+let rpc call =
+  retry_econnrefused
+    (fun () ->
+       if !Xcp_client.use_switch
+       then Xcp_client.json_switch_rpc !Network_interface.queue_name call
+       else Xcp_client.xml_http_rpc
+           ~srcstr:(Xcp_client.get_user_agent ())
+           ~dststr:"network"
+           Network_interface.uri
+           call
+    )
+
+module Client = Network_interface.Interface_API(Idl.GenClientExnRpc(struct let rpc=rpc end))