254 строки
9.4 KiB
Go
254 строки
9.4 KiB
Go
/*
|
|
*
|
|
* Copyright 2017 gRPC authors.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
*/
|
|
|
|
package grpc
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"net"
|
|
"strings"
|
|
"testing"
|
|
"time"
|
|
|
|
"google.golang.org/grpc/codes"
|
|
"google.golang.org/grpc/resolver"
|
|
"google.golang.org/grpc/resolver/manual"
|
|
"google.golang.org/grpc/serviceconfig"
|
|
"google.golang.org/grpc/status"
|
|
)
|
|
|
|
func (s) TestParseTarget(t *testing.T) {
|
|
for _, test := range []resolver.Target{
|
|
{Scheme: "dns", Authority: "", Endpoint: "google.com"},
|
|
{Scheme: "dns", Authority: "a.server.com", Endpoint: "google.com"},
|
|
{Scheme: "dns", Authority: "a.server.com", Endpoint: "google.com/?a=b"},
|
|
{Scheme: "passthrough", Authority: "", Endpoint: "/unix/socket/address"},
|
|
} {
|
|
str := test.Scheme + "://" + test.Authority + "/" + test.Endpoint
|
|
got := parseTarget(str)
|
|
if got != test {
|
|
t.Errorf("parseTarget(%q) = %+v, want %+v", str, got, test)
|
|
}
|
|
}
|
|
}
|
|
|
|
func (s) TestParseTargetString(t *testing.T) {
|
|
for _, test := range []struct {
|
|
targetStr string
|
|
want resolver.Target
|
|
}{
|
|
{targetStr: "", want: resolver.Target{Scheme: "", Authority: "", Endpoint: ""}},
|
|
{targetStr: ":///", want: resolver.Target{Scheme: "", Authority: "", Endpoint: ""}},
|
|
{targetStr: "a:///", want: resolver.Target{Scheme: "a", Authority: "", Endpoint: ""}},
|
|
{targetStr: "://a/", want: resolver.Target{Scheme: "", Authority: "a", Endpoint: ""}},
|
|
{targetStr: ":///a", want: resolver.Target{Scheme: "", Authority: "", Endpoint: "a"}},
|
|
{targetStr: "a://b/", want: resolver.Target{Scheme: "a", Authority: "b", Endpoint: ""}},
|
|
{targetStr: "a:///b", want: resolver.Target{Scheme: "a", Authority: "", Endpoint: "b"}},
|
|
{targetStr: "://a/b", want: resolver.Target{Scheme: "", Authority: "a", Endpoint: "b"}},
|
|
{targetStr: "a://b/c", want: resolver.Target{Scheme: "a", Authority: "b", Endpoint: "c"}},
|
|
{targetStr: "dns:///google.com", want: resolver.Target{Scheme: "dns", Authority: "", Endpoint: "google.com"}},
|
|
{targetStr: "dns://a.server.com/google.com", want: resolver.Target{Scheme: "dns", Authority: "a.server.com", Endpoint: "google.com"}},
|
|
{targetStr: "dns://a.server.com/google.com/?a=b", want: resolver.Target{Scheme: "dns", Authority: "a.server.com", Endpoint: "google.com/?a=b"}},
|
|
|
|
{targetStr: "/", want: resolver.Target{Scheme: "", Authority: "", Endpoint: "/"}},
|
|
{targetStr: "google.com", want: resolver.Target{Scheme: "", Authority: "", Endpoint: "google.com"}},
|
|
{targetStr: "google.com/?a=b", want: resolver.Target{Scheme: "", Authority: "", Endpoint: "google.com/?a=b"}},
|
|
{targetStr: "/unix/socket/address", want: resolver.Target{Scheme: "", Authority: "", Endpoint: "/unix/socket/address"}},
|
|
|
|
// If we can only parse part of the target.
|
|
{targetStr: "://", want: resolver.Target{Scheme: "", Authority: "", Endpoint: "://"}},
|
|
{targetStr: "unix://domain", want: resolver.Target{Scheme: "", Authority: "", Endpoint: "unix://domain"}},
|
|
{targetStr: "a:b", want: resolver.Target{Scheme: "", Authority: "", Endpoint: "a:b"}},
|
|
{targetStr: "a/b", want: resolver.Target{Scheme: "", Authority: "", Endpoint: "a/b"}},
|
|
{targetStr: "a:/b", want: resolver.Target{Scheme: "", Authority: "", Endpoint: "a:/b"}},
|
|
{targetStr: "a//b", want: resolver.Target{Scheme: "", Authority: "", Endpoint: "a//b"}},
|
|
{targetStr: "a://b", want: resolver.Target{Scheme: "", Authority: "", Endpoint: "a://b"}},
|
|
} {
|
|
got := parseTarget(test.targetStr)
|
|
if got != test.want {
|
|
t.Errorf("parseTarget(%q) = %+v, want %+v", test.targetStr, got, test.want)
|
|
}
|
|
}
|
|
}
|
|
|
|
// The target string with unknown scheme should be kept unchanged and passed to
|
|
// the dialer.
|
|
func (s) TestDialParseTargetUnknownScheme(t *testing.T) {
|
|
for _, test := range []struct {
|
|
targetStr string
|
|
want string
|
|
}{
|
|
{"/unix/socket/address", "/unix/socket/address"},
|
|
|
|
// Special test for "unix:///".
|
|
{"unix:///unix/socket/address", "unix:///unix/socket/address"},
|
|
|
|
// For known scheme.
|
|
{"passthrough://a.server.com/google.com", "google.com"},
|
|
} {
|
|
dialStrCh := make(chan string, 1)
|
|
cc, err := Dial(test.targetStr, WithInsecure(), WithDialer(func(addr string, _ time.Duration) (net.Conn, error) {
|
|
select {
|
|
case dialStrCh <- addr:
|
|
default:
|
|
}
|
|
return nil, fmt.Errorf("test dialer, always error")
|
|
}))
|
|
if err != nil {
|
|
t.Fatalf("Failed to create ClientConn: %v", err)
|
|
}
|
|
got := <-dialStrCh
|
|
cc.Close()
|
|
if got != test.want {
|
|
t.Errorf("Dial(%q), dialer got %q, want %q", test.targetStr, got, test.want)
|
|
}
|
|
}
|
|
}
|
|
|
|
func testResolverErrorPolling(t *testing.T, badUpdate func(*manual.Resolver), goodUpdate func(*manual.Resolver), dopts ...DialOption) {
|
|
boIter := make(chan int)
|
|
resolverBackoff := func(v int) time.Duration {
|
|
boIter <- v
|
|
return 0
|
|
}
|
|
|
|
r, rcleanup := manual.GenerateAndRegisterManualResolver()
|
|
defer rcleanup()
|
|
rn := make(chan struct{})
|
|
defer func() { close(rn) }()
|
|
r.ResolveNowCallback = func(resolver.ResolveNowOption) { rn <- struct{}{} }
|
|
|
|
defaultDialOptions := []DialOption{
|
|
WithInsecure(),
|
|
withResolveNowBackoff(resolverBackoff),
|
|
}
|
|
cc, err := Dial(r.Scheme()+":///test.server", append(defaultDialOptions, dopts...)...)
|
|
if err != nil {
|
|
t.Fatalf("Dial(_, _) = _, %v; want _, nil", err)
|
|
}
|
|
defer cc.Close()
|
|
badUpdate(r)
|
|
|
|
panicAfter := time.AfterFunc(5*time.Second, func() { panic("timed out polling resolver") })
|
|
defer panicAfter.Stop()
|
|
|
|
// Ensure ResolveNow is called, then Backoff with the right parameter, several times
|
|
for i := 0; i < 7; i++ {
|
|
<-rn
|
|
if v := <-boIter; v != i {
|
|
t.Errorf("Backoff call %v uses value %v", i, v)
|
|
}
|
|
}
|
|
|
|
// UpdateState will block if ResolveNow is being called (which blocks on
|
|
// rn), so call it in a goroutine.
|
|
goodUpdate(r)
|
|
|
|
// Wait awhile to ensure ResolveNow and Backoff stop being called when the
|
|
// state is OK (i.e. polling was cancelled).
|
|
for {
|
|
t := time.NewTimer(50 * time.Millisecond)
|
|
select {
|
|
case <-rn:
|
|
// ClientConn is still calling ResolveNow
|
|
<-boIter
|
|
time.Sleep(5 * time.Millisecond)
|
|
continue
|
|
case <-t.C:
|
|
// ClientConn stopped calling ResolveNow; success
|
|
}
|
|
break
|
|
}
|
|
}
|
|
|
|
// TestResolverErrorPolling injects resolver errors and verifies ResolveNow is
|
|
// called with the appropriate backoff strategy being consulted between
|
|
// ResolveNow calls.
|
|
func (s) TestResolverErrorPolling(t *testing.T) {
|
|
testResolverErrorPolling(t, func(r *manual.Resolver) {
|
|
r.CC.ReportError(errors.New("res err"))
|
|
}, func(r *manual.Resolver) {
|
|
// UpdateState will block if ResolveNow is being called (which blocks on
|
|
// rn), so call it in a goroutine.
|
|
go r.CC.UpdateState(resolver.State{})
|
|
})
|
|
}
|
|
|
|
// TestServiceConfigErrorPolling injects a service config error and verifies
|
|
// ResolveNow is called with the appropriate backoff strategy being consulted
|
|
// between ResolveNow calls.
|
|
func (s) TestServiceConfigErrorPolling(t *testing.T) {
|
|
testResolverErrorPolling(t, func(r *manual.Resolver) {
|
|
badsc := r.CC.ParseServiceConfig("bad config")
|
|
r.UpdateState(resolver.State{ServiceConfig: badsc})
|
|
}, func(r *manual.Resolver) {
|
|
// UpdateState will block if ResolveNow is being called (which blocks on
|
|
// rn), so call it in a goroutine.
|
|
go r.CC.UpdateState(resolver.State{})
|
|
})
|
|
}
|
|
|
|
// TestResolverErrorInBuild makes the resolver.Builder call into the ClientConn
|
|
// during the Build call. We use two separate mutexes in the code which make
|
|
// sure there is no data race in this code path, and also that there is no
|
|
// deadlock.
|
|
func (s) TestResolverErrorInBuild(t *testing.T) {
|
|
r, rcleanup := manual.GenerateAndRegisterManualResolver()
|
|
defer rcleanup()
|
|
r.InitialState(resolver.State{ServiceConfig: &serviceconfig.ParseResult{Err: errors.New("resolver build err")}})
|
|
|
|
cc, err := Dial(r.Scheme()+":///test.server", WithInsecure())
|
|
if err != nil {
|
|
t.Fatalf("Dial(_, _) = _, %v; want _, nil", err)
|
|
}
|
|
defer cc.Close()
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
|
defer cancel()
|
|
var dummy int
|
|
const wantMsg = "error parsing service config"
|
|
const wantCode = codes.Unavailable
|
|
if err := cc.Invoke(ctx, "/foo/bar", &dummy, &dummy); status.Code(err) != wantCode || !strings.Contains(status.Convert(err).Message(), wantMsg) {
|
|
t.Fatalf("cc.Invoke(_, _, _, _) = %v; want status.Code()==%v, status.Message() contains %q", err, wantCode, wantMsg)
|
|
}
|
|
}
|
|
|
|
func (s) TestServiceConfigErrorRPC(t *testing.T) {
|
|
r, rcleanup := manual.GenerateAndRegisterManualResolver()
|
|
defer rcleanup()
|
|
|
|
cc, err := Dial(r.Scheme()+":///test.server", WithInsecure())
|
|
if err != nil {
|
|
t.Fatalf("Dial(_, _) = _, %v; want _, nil", err)
|
|
}
|
|
defer cc.Close()
|
|
badsc := r.CC.ParseServiceConfig("bad config")
|
|
r.UpdateState(resolver.State{ServiceConfig: badsc})
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
|
defer cancel()
|
|
var dummy int
|
|
const wantMsg = "error parsing service config"
|
|
const wantCode = codes.Unavailable
|
|
if err := cc.Invoke(ctx, "/foo/bar", &dummy, &dummy); status.Code(err) != wantCode || !strings.Contains(status.Convert(err).Message(), wantMsg) {
|
|
t.Fatalf("cc.Invoke(_, _, _, _) = %v; want status.Code()==%v, status.Message() contains %q", err, wantCode, wantMsg)
|
|
}
|
|
}
|