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authordependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>2021-02-09 09:17:50 +0000
committerDaniel J Walsh <dwalsh@redhat.com>2021-02-09 10:49:43 -0500
commit08d8290f1d65a254b6794f7fe87a6f769b2ca792 (patch)
tree1cb56c15d412d1d20226d1486bbd05656a3106e5 /vendor/google.golang.org/grpc/pickfirst.go
parent19507d0ffe8cda0a69f056838556f471fd9e61fa (diff)
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Bump github.com/containers/ocicrypt from 1.0.3 to 1.1.0
Bumps [github.com/containers/ocicrypt](https://github.com/containers/ocicrypt) from 1.0.3 to 1.1.0. - [Release notes](https://github.com/containers/ocicrypt/releases) - [Commits](https://github.com/containers/ocicrypt/compare/v1.0.3...v1.1.0) Signed-off-by: dependabot-preview[bot] <support@dependabot.com> Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Diffstat (limited to 'vendor/google.golang.org/grpc/pickfirst.go')
-rw-r--r--vendor/google.golang.org/grpc/pickfirst.go136
1 files changed, 136 insertions, 0 deletions
diff --git a/vendor/google.golang.org/grpc/pickfirst.go b/vendor/google.golang.org/grpc/pickfirst.go
new file mode 100644
index 000000000..56e33f6c7
--- /dev/null
+++ b/vendor/google.golang.org/grpc/pickfirst.go
@@ -0,0 +1,136 @@
+/*
+ *
+ * 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 (
+ "errors"
+ "fmt"
+
+ "google.golang.org/grpc/balancer"
+ "google.golang.org/grpc/connectivity"
+)
+
+// PickFirstBalancerName is the name of the pick_first balancer.
+const PickFirstBalancerName = "pick_first"
+
+func newPickfirstBuilder() balancer.Builder {
+ return &pickfirstBuilder{}
+}
+
+type pickfirstBuilder struct{}
+
+func (*pickfirstBuilder) Build(cc balancer.ClientConn, opt balancer.BuildOptions) balancer.Balancer {
+ return &pickfirstBalancer{cc: cc}
+}
+
+func (*pickfirstBuilder) Name() string {
+ return PickFirstBalancerName
+}
+
+type pickfirstBalancer struct {
+ state connectivity.State
+ cc balancer.ClientConn
+ sc balancer.SubConn
+}
+
+func (b *pickfirstBalancer) ResolverError(err error) {
+ switch b.state {
+ case connectivity.TransientFailure, connectivity.Idle, connectivity.Connecting:
+ // Set a failing picker if we don't have a good picker.
+ b.cc.UpdateState(balancer.State{ConnectivityState: connectivity.TransientFailure,
+ Picker: &picker{err: fmt.Errorf("name resolver error: %v", err)},
+ })
+ }
+ if logger.V(2) {
+ logger.Infof("pickfirstBalancer: ResolverError called with error %v", err)
+ }
+}
+
+func (b *pickfirstBalancer) UpdateClientConnState(cs balancer.ClientConnState) error {
+ if len(cs.ResolverState.Addresses) == 0 {
+ b.ResolverError(errors.New("produced zero addresses"))
+ return balancer.ErrBadResolverState
+ }
+ if b.sc == nil {
+ var err error
+ b.sc, err = b.cc.NewSubConn(cs.ResolverState.Addresses, balancer.NewSubConnOptions{})
+ if err != nil {
+ if logger.V(2) {
+ logger.Errorf("pickfirstBalancer: failed to NewSubConn: %v", err)
+ }
+ b.state = connectivity.TransientFailure
+ b.cc.UpdateState(balancer.State{ConnectivityState: connectivity.TransientFailure,
+ Picker: &picker{err: fmt.Errorf("error creating connection: %v", err)},
+ })
+ return balancer.ErrBadResolverState
+ }
+ b.state = connectivity.Idle
+ b.cc.UpdateState(balancer.State{ConnectivityState: connectivity.Idle, Picker: &picker{result: balancer.PickResult{SubConn: b.sc}}})
+ b.sc.Connect()
+ } else {
+ b.sc.UpdateAddresses(cs.ResolverState.Addresses)
+ b.sc.Connect()
+ }
+ return nil
+}
+
+func (b *pickfirstBalancer) UpdateSubConnState(sc balancer.SubConn, s balancer.SubConnState) {
+ if logger.V(2) {
+ logger.Infof("pickfirstBalancer: UpdateSubConnState: %p, %v", sc, s)
+ }
+ if b.sc != sc {
+ if logger.V(2) {
+ logger.Infof("pickfirstBalancer: ignored state change because sc is not recognized")
+ }
+ return
+ }
+ b.state = s.ConnectivityState
+ if s.ConnectivityState == connectivity.Shutdown {
+ b.sc = nil
+ return
+ }
+
+ switch s.ConnectivityState {
+ case connectivity.Ready, connectivity.Idle:
+ b.cc.UpdateState(balancer.State{ConnectivityState: s.ConnectivityState, Picker: &picker{result: balancer.PickResult{SubConn: sc}}})
+ case connectivity.Connecting:
+ b.cc.UpdateState(balancer.State{ConnectivityState: s.ConnectivityState, Picker: &picker{err: balancer.ErrNoSubConnAvailable}})
+ case connectivity.TransientFailure:
+ b.cc.UpdateState(balancer.State{
+ ConnectivityState: s.ConnectivityState,
+ Picker: &picker{err: s.ConnectionError},
+ })
+ }
+}
+
+func (b *pickfirstBalancer) Close() {
+}
+
+type picker struct {
+ result balancer.PickResult
+ err error
+}
+
+func (p *picker) Pick(info balancer.PickInfo) (balancer.PickResult, error) {
+ return p.result, p.err
+}
+
+func init() {
+ balancer.Register(newPickfirstBuilder())
+}