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1 | // Licensed to the Apache Software Foundation (ASF) under one |
2 | // or more contributor license agreements. See the NOTICE file | |
3 | // distributed with this work for additional information | |
4 | // regarding copyright ownership. The ASF licenses this file | |
5 | // to you under the Apache License, Version 2.0 (the | |
6 | // "License"); you may not use this file except in compliance | |
7 | // with the License. You may obtain a copy of the License at | |
8 | // | |
9 | // http://www.apache.org/licenses/LICENSE-2.0 | |
10 | // | |
11 | // Unless required by applicable law or agreed to in writing, software | |
12 | // distributed under the License is distributed on an "AS IS" BASIS, | |
13 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | // See the License for the specific language governing permissions and | |
15 | // limitations under the License. | |
16 | ||
17 | package flight_test | |
18 | ||
19 | import ( | |
20 | "context" | |
21 | "fmt" | |
22 | "io" | |
23 | "log" | |
24 | ||
25 | "github.com/apache/arrow/go/v6/arrow/flight" | |
26 | "google.golang.org/grpc" | |
27 | "google.golang.org/grpc/codes" | |
28 | "google.golang.org/grpc/status" | |
29 | ) | |
30 | ||
31 | type serverAuth struct{} | |
32 | ||
33 | func (sa *serverAuth) Authenticate(c flight.AuthConn) error { | |
34 | in, err := c.Read() | |
35 | if err == io.EOF { | |
36 | return status.Error(codes.Unauthenticated, "no auth info provided") | |
37 | } | |
38 | ||
39 | if err != nil { | |
40 | return status.Error(codes.FailedPrecondition, "error reading auth handshake") | |
41 | } | |
42 | ||
43 | // do something with in.... | |
44 | fmt.Println(string(in)) | |
45 | ||
46 | // send auth token back | |
47 | return c.Send([]byte("foobar")) | |
48 | } | |
49 | ||
50 | func (sa *serverAuth) IsValid(token string) (interface{}, error) { | |
51 | if token == "foobar" { | |
52 | return "foo", nil | |
53 | } | |
54 | return "", status.Error(codes.PermissionDenied, "invalid auth token") | |
55 | } | |
56 | ||
57 | func Example_server() { | |
58 | server := flight.NewFlightServer(&serverAuth{}) | |
59 | server.Init("localhost:0") | |
60 | server.RegisterFlightService(&flight.FlightServiceService{}) | |
61 | ||
62 | go server.Serve() | |
63 | defer server.Shutdown() | |
64 | ||
65 | conn, err := grpc.Dial(server.Addr().String(), grpc.WithInsecure()) | |
66 | if err != nil { | |
67 | log.Fatal(err) | |
68 | } | |
69 | defer conn.Close() | |
70 | ||
71 | client := flight.NewFlightServiceClient(conn) | |
72 | stream, err := client.Handshake(context.Background()) | |
73 | if err != nil { | |
74 | log.Fatal(err) | |
75 | } | |
76 | ||
77 | // ignore error handling here for brevity | |
78 | stream.Send(&flight.HandshakeRequest{Payload: []byte("baz")}) | |
79 | ||
80 | resp, _ := stream.Recv() | |
81 | fmt.Println(string(resp.Payload)) | |
82 | ||
83 | // Output: | |
84 | // baz | |
85 | // foobar | |
86 | } |