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-rw-r--r--third_party/overlays/patches/cbtemulator-uds.patch140
1 files changed, 140 insertions, 0 deletions
diff --git a/third_party/overlays/patches/cbtemulator-uds.patch b/third_party/overlays/patches/cbtemulator-uds.patch
new file mode 100644
index 000000000000..a19255306f88
--- /dev/null
+++ b/third_party/overlays/patches/cbtemulator-uds.patch
@@ -0,0 +1,140 @@
+commit 1397e10225d8c6fd079a86fccd58fb5d0f4200bc
+Author: Florian Klink <flokli@flokli.de>
+Date:   Fri Mar 29 10:06:34 2024 +0100
+
+    feat(bigtable/emulator): allow listening on Unix Domain Sockets
+    
+    cbtemulator listening on unix domain sockets is much easier than trying
+    to allocate free TCP ports, especially if many cbtemulators are run at
+    the same time in integration tests.
+    
+    This adds an additional flag, address, which has priority if it's set,
+    rather than host:port.
+    
+    `NewServer` already takes a `laddr string`, so we simply check for it to
+    contain slashes, and if so, listen on unix, rather than TCP.
+
+diff --git a/bigtable/bttest/inmem.go b/bigtable/bttest/inmem.go
+index 556abc2a85..33e4bf2667 100644
+--- a/bttest/inmem.go
++++ b/bttest/inmem.go
+@@ -40,6 +40,7 @@ import (
+ 	"math"
+ 	"math/rand"
+ 	"net"
++	"os"
+ 	"regexp"
+ 	"sort"
+ 	"strings"
+@@ -106,7 +107,15 @@ type server struct {
+ // The Server will be listening for gRPC connections, without TLS,
+ // on the provided address. The resolved address is named by the Addr field.
+ func NewServer(laddr string, opt ...grpc.ServerOption) (*Server, error) {
+-	l, err := net.Listen("tcp", laddr)
++	var l net.Listener
++	var err error
++
++	// If the address contains slashes, listen on a unix domain socket instead.
++	if strings.Contains(laddr, "/") {
++		l, err = net.Listen("unix", laddr)
++	} else {
++		l, err = net.Listen("tcp", laddr)
++	}
+ 	if err != nil {
+ 		return nil, err
+ 	}
+diff --git a/bigtable/cmd/emulator/cbtemulator.go b/bigtable/cmd/emulator/cbtemulator.go
+index 144c09ffb1..deaf69b717 100644
+--- a/cmd/emulator/cbtemulator.go
++++ b/cmd/emulator/cbtemulator.go
+@@ -27,8 +27,9 @@ import (
+ )
+ 
+ var (
+-	host = flag.String("host", "localhost", "the address to bind to on the local machine")
+-	port = flag.Int("port", 9000, "the port number to bind to on the local machine")
++	host    = flag.String("host", "localhost", "the address to bind to on the local machine")
++	port    = flag.Int("port", 9000, "the port number to bind to on the local machine")
++	address = flag.String("address", "", "address:port number or unix socket path to listen on. Has priority over host/port")
+ )
+ 
+ const (
+@@ -42,7 +43,15 @@ func main() {
+ 		grpc.MaxRecvMsgSize(maxMsgSize),
+ 		grpc.MaxSendMsgSize(maxMsgSize),
+ 	}
+-	srv, err := bttest.NewServer(fmt.Sprintf("%s:%d", *host, *port), opts...)
++
++	var laddr string
++	if *address != "" {
++		laddr = *address
++	} else {
++		laddr = fmt.Sprintf("%s:%d", *host, *port)
++	}
++
++	srv, err := bttest.NewServer(laddr, opts...)
+ 	if err != nil {
+ 		log.Fatalf("failed to start emulator: %v", err)
+ 	}
+commit ce16f843d6c93159d86b3807c6d9ff66e43aac67
+Author: Florian Klink <flokli@flokli.de>
+Date:   Fri Mar 29 11:53:15 2024 +0100
+
+    feat(bigtable): clean up unix socket on close
+    
+    Call srv.Close when receiving an interrupt, and delete the unix domain
+    socket in that function.
+
+diff --git a/bigtable/bttest/inmem.go b/bigtable/bttest/inmem.go
+index 33e4bf2667..0dc96024b1 100644
+--- a/bttest/inmem.go
++++ b/bttest/inmem.go
+@@ -148,6 +148,11 @@ func (s *Server) Close() {
+ 
+ 	s.srv.Stop()
+ 	s.l.Close()
++
++	// clean up unix socket
++	if strings.Contains(s.Addr, "/") {
++		_ = os.Remove(s.Addr)
++	}
+ }
+ 
+ func (s *server) CreateTable(ctx context.Context, req *btapb.CreateTableRequest) (*btapb.Table, error) {
+diff --git a/bigtable/cmd/emulator/cbtemulator.go b/bigtable/cmd/emulator/cbtemulator.go
+index deaf69b717..5a9e8f7a8c 100644
+--- a/cmd/emulator/cbtemulator.go
++++ b/cmd/emulator/cbtemulator.go
+@@ -18,9 +18,12 @@ cbtemulator launches the in-memory Cloud Bigtable server on the given address.
+ package main
+ 
+ import (
++	"context"
+ 	"flag"
+ 	"fmt"
+ 	"log"
++	"os"
++	"os/signal"
+ 
+ 	"cloud.google.com/go/bigtable/bttest"
+ 	"google.golang.org/grpc"
+@@ -51,11 +54,18 @@ func main() {
+ 		laddr = fmt.Sprintf("%s:%d", *host, *port)
+ 	}
+ 
++	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt)
++	defer stop()
++
+ 	srv, err := bttest.NewServer(laddr, opts...)
+ 	if err != nil {
+ 		log.Fatalf("failed to start emulator: %v", err)
+ 	}
+ 
+ 	fmt.Printf("Cloud Bigtable emulator running on %s\n", srv.Addr)
+-	select {}
++	select {
++	case <-ctx.Done():
++		srv.Close()
++		stop()
++	}
+ }