Files
netrunner/zaprpc/server.go
T
Hanzo AI 301a8e2601 rip gRPC, USE ZAP: netrunner control-plane now luxfi/zap-native (FORWARDS ONLY)
Per the project rule 'ZAP internal, ZIP edge': netrunner's 26-method
ControlService + PingService move off google.golang.org/grpc and
grpc-gateway onto a luxfi/zap envelope. Default builds now have ZERO
google.golang.org/grpc transitive deps.

New package: netrunner/zaprpc/
  - protocol.go: MsgType (uint8 range, encoded in ZAP flags upper byte).
    One stable wire ID per method. Append-only.
  - dispatch.go: typed Bind[Req, Resp](d, msg, handler) — register a
    'func(ctx, *Req) (*Resp, error)' handler. JSON encode/decode +
    envelope framing happen here, handlers stay business-logic-only.
  - server.go: thin wrapper around zap.Node hosting a Dispatcher.
  - client.go: typed Call[Req, Resp](ctx, c, msg, req) — same DX as the
    old gRPC client but transport is ZAP. Includes connect-retry around
    the boot race.

server/bind.go: one-shot registration of all 26 RPC methods onto a
Dispatcher. The canonical map of 'what this server exposes'.

server/server.go: gRPC server + grpc-gateway HTTP bridge are gone.
Run() now starts the ZAP server and waits for rootCtx.Done. The
'soldier-on' isClientCanceled helper goes with the gRPC stream code.

client/client.go: full rewrite. Same Client interface (28 methods),
implementation is now one-line zaprpc.Call per method. StreamStatus
becomes a client-driven Status() poll on the requested interval —
ZAP has no native server-streaming, but the observable contract
(channel of ClusterInfo) is unchanged.

Deleted:
  - rpcpb/rpc_grpc.pb.go (gRPC service stubs)
  - rpcpb/rpc.pb.gw.go (grpc-gateway HTTP bridge)

The rpcpb message types (rpc.pb.go) stay — they're plain Go structs
with json: tags, used as the JSON payload format inside ZAP envelopes.
A future cleanup pass can replace them with hand-written structs to
drop google.golang.org/protobuf from the dep tree too.

go.mod cleanup: drop github.com/grpc-ecosystem/grpc-gateway/v2,
google.golang.org/grpc, google.golang.org/genproto/googleapis/api.
Pin luxfi/proto v1.0.0 (was luxfi/protocol v0.0.4 — stale rename
artifact). Add luxfi/zap v0.2.0.

Tests: zaprpc/zaprpc_test.go round-trips request/response and proves
the error path propagates through the envelope.

No backwards compat — forwards perfection per the project rule.
2026-05-20 19:15:40 -07:00

67 lines
1.7 KiB
Go

// Copyright (C) 2021-2026, Lux Industries Inc. All rights reserved.
// SPDX-License-Identifier: BSD-3-Clause
package zaprpc
import (
"context"
"fmt"
"log/slog"
"github.com/luxfi/zap"
)
// ServerConfig configures a netrunner ZAP server.
type ServerConfig struct {
NodeID string // human-readable identifier, e.g. "netrunner-server"
Port int // TCP port to listen on
Logger *slog.Logger
}
// Server is a thin wrapper around zap.Node that hosts a Dispatcher.
type Server struct {
node *zap.Node
disp *Dispatcher
}
// NewServer constructs a ZAP server that will dispatch to the handlers
// registered on the given Dispatcher.
func NewServer(cfg ServerConfig, disp *Dispatcher) *Server {
if cfg.Logger == nil {
cfg.Logger = slog.Default()
}
node := zap.NewNode(zap.NodeConfig{
NodeID: cfg.NodeID,
ServiceType: "_netrunner._tcp",
Port: cfg.Port,
Logger: cfg.Logger,
NoDiscovery: true, // netrunner clients dial directly, no mDNS needed
})
disp.AttachTo(node)
return &Server{node: node, disp: disp}
}
// Start binds the listener. Run inside its own goroutine — call Stop to wind down.
func (s *Server) Start() error {
if err := s.node.Start(); err != nil {
return fmt.Errorf("zaprpc server start: %w", err)
}
return nil
}
// Stop gracefully closes the listener and all peer connections.
func (s *Server) Stop() {
s.node.Stop()
}
// Wait blocks until the server's context is canceled. Useful in main().
func (s *Server) Wait(ctx context.Context) {
<-ctx.Done()
}
// Node returns the underlying ZAP node — primarily for tests and for
// server-side pushes to subscribed clients.
func (s *Server) Node() *zap.Node {
return s.node
}