121 lines
2.9 KiB
Go
121 lines
2.9 KiB
Go
package plugin
|
|
|
|
import (
|
|
"bytes"
|
|
"net"
|
|
"net/rpc"
|
|
|
|
"github.com/mitchellh/go-testing-interface"
|
|
"google.golang.org/grpc"
|
|
)
|
|
|
|
// The testing file contains test helpers that you can use outside of
|
|
// this package for making it easier to test plugins themselves.
|
|
|
|
// TestConn is a helper function for returning a client and server
|
|
// net.Conn connected to each other.
|
|
func TestConn(t testing.T) (net.Conn, net.Conn) {
|
|
// Listen to any local port. This listener will be closed
|
|
// after a single connection is established.
|
|
l, err := net.Listen("tcp", "127.0.0.1:0")
|
|
if err != nil {
|
|
t.Fatalf("err: %s", err)
|
|
}
|
|
|
|
// Start a goroutine to accept our client connection
|
|
var serverConn net.Conn
|
|
doneCh := make(chan struct{})
|
|
go func() {
|
|
defer close(doneCh)
|
|
defer l.Close()
|
|
var err error
|
|
serverConn, err = l.Accept()
|
|
if err != nil {
|
|
t.Fatalf("err: %s", err)
|
|
}
|
|
}()
|
|
|
|
// Connect to the server
|
|
clientConn, err := net.Dial("tcp", l.Addr().String())
|
|
if err != nil {
|
|
t.Fatalf("err: %s", err)
|
|
}
|
|
|
|
// Wait for the server side to acknowledge it has connected
|
|
<-doneCh
|
|
|
|
return clientConn, serverConn
|
|
}
|
|
|
|
// TestRPCConn returns a rpc client and server connected to each other.
|
|
func TestRPCConn(t testing.T) (*rpc.Client, *rpc.Server) {
|
|
clientConn, serverConn := TestConn(t)
|
|
|
|
server := rpc.NewServer()
|
|
go server.ServeConn(serverConn)
|
|
|
|
client := rpc.NewClient(clientConn)
|
|
return client, server
|
|
}
|
|
|
|
// TestPluginRPCConn returns a plugin RPC client and server that are connected
|
|
// together and configured.
|
|
func TestPluginRPCConn(t testing.T, ps map[string]Plugin) (*RPCClient, *RPCServer) {
|
|
// Create two net.Conns we can use to shuttle our control connection
|
|
clientConn, serverConn := TestConn(t)
|
|
|
|
// Start up the server
|
|
server := &RPCServer{Plugins: ps, Stdout: new(bytes.Buffer), Stderr: new(bytes.Buffer)}
|
|
go server.ServeConn(serverConn)
|
|
|
|
// Connect the client to the server
|
|
client, err := NewRPCClient(clientConn, ps)
|
|
if err != nil {
|
|
t.Fatalf("err: %s", err)
|
|
}
|
|
|
|
return client, server
|
|
}
|
|
|
|
// TestPluginGRPCConn returns a plugin gRPC client and server that are connected
|
|
// together and configured. This is used to test gRPC connections.
|
|
func TestPluginGRPCConn(t testing.T, ps map[string]Plugin) (*GRPCClient, *GRPCServer) {
|
|
// Create a listener
|
|
l, err := net.Listen("tcp", "127.0.0.1:0")
|
|
if err != nil {
|
|
t.Fatalf("err: %s", err)
|
|
}
|
|
|
|
// Start up the server
|
|
server := &GRPCServer{
|
|
Plugins: ps,
|
|
Server: DefaultGRPCServer,
|
|
Stdout: new(bytes.Buffer),
|
|
Stderr: new(bytes.Buffer),
|
|
}
|
|
if err := server.Init(); err != nil {
|
|
t.Fatalf("err: %s", err)
|
|
}
|
|
go server.Serve(l)
|
|
|
|
// Connect to the server
|
|
conn, err := grpc.Dial(
|
|
l.Addr().String(),
|
|
grpc.WithBlock(),
|
|
grpc.WithInsecure())
|
|
if err != nil {
|
|
t.Fatalf("err: %s", err)
|
|
}
|
|
|
|
// Connection successful, close the listener
|
|
l.Close()
|
|
|
|
// Create the client
|
|
client := &GRPCClient{
|
|
Conn: conn,
|
|
Plugins: ps,
|
|
}
|
|
|
|
return client, server
|
|
}
|