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authorLibravatar tobi <31960611+tsmethurst@users.noreply.github.com>2024-08-26 18:05:54 +0200
committerLibravatar GitHub <noreply@github.com>2024-08-26 18:05:54 +0200
commit28d57d1f13ee61a6ff83ce4beaf238139d20bbac (patch)
tree7946abb44b21f9e2f4267146711760a911072c9b /vendor/google.golang.org/grpc/pickfirst.go
parent[chore]: Bump github.com/prometheus/client_golang from 1.20.0 to 1.20.2 (#3239) (diff)
downloadgotosocial-28d57d1f13ee61a6ff83ce4beaf238139d20bbac.tar.xz
[chore] Bump all otel deps (#3241)
Diffstat (limited to 'vendor/google.golang.org/grpc/pickfirst.go')
-rw-r--r--vendor/google.golang.org/grpc/pickfirst.go241
1 files changed, 0 insertions, 241 deletions
diff --git a/vendor/google.golang.org/grpc/pickfirst.go b/vendor/google.golang.org/grpc/pickfirst.go
deleted file mode 100644
index e3ea42ba9..000000000
--- a/vendor/google.golang.org/grpc/pickfirst.go
+++ /dev/null
@@ -1,241 +0,0 @@
-/*
- *
- * 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 (
- "encoding/json"
- "errors"
- "fmt"
-
- "google.golang.org/grpc/balancer"
- "google.golang.org/grpc/connectivity"
- internalgrpclog "google.golang.org/grpc/internal/grpclog"
- "google.golang.org/grpc/internal/grpcrand"
- "google.golang.org/grpc/internal/pretty"
- "google.golang.org/grpc/resolver"
- "google.golang.org/grpc/serviceconfig"
-)
-
-const (
- // PickFirstBalancerName is the name of the pick_first balancer.
- PickFirstBalancerName = "pick_first"
- logPrefix = "[pick-first-lb %p] "
-)
-
-type pickfirstBuilder struct{}
-
-func (pickfirstBuilder) Build(cc balancer.ClientConn, opt balancer.BuildOptions) balancer.Balancer {
- b := &pickfirstBalancer{cc: cc}
- b.logger = internalgrpclog.NewPrefixLogger(logger, fmt.Sprintf(logPrefix, b))
- return b
-}
-
-func (pickfirstBuilder) Name() string {
- return PickFirstBalancerName
-}
-
-type pfConfig struct {
- serviceconfig.LoadBalancingConfig `json:"-"`
-
- // If set to true, instructs the LB policy to shuffle the order of the list
- // of addresses received from the name resolver before attempting to
- // connect to them.
- ShuffleAddressList bool `json:"shuffleAddressList"`
-}
-
-func (pickfirstBuilder) ParseConfig(js json.RawMessage) (serviceconfig.LoadBalancingConfig, error) {
- var cfg pfConfig
- if err := json.Unmarshal(js, &cfg); err != nil {
- return nil, fmt.Errorf("pickfirst: unable to unmarshal LB policy config: %s, error: %v", string(js), err)
- }
- return cfg, nil
-}
-
-type pickfirstBalancer struct {
- logger *internalgrpclog.PrefixLogger
- state connectivity.State
- cc balancer.ClientConn
- subConn balancer.SubConn
-}
-
-func (b *pickfirstBalancer) ResolverError(err error) {
- if b.logger.V(2) {
- b.logger.Infof("Received error from the name resolver: %v", err)
- }
- if b.subConn == nil {
- b.state = connectivity.TransientFailure
- }
-
- if b.state != connectivity.TransientFailure {
- // The picker will not change since the balancer does not currently
- // report an error.
- return
- }
- b.cc.UpdateState(balancer.State{
- ConnectivityState: connectivity.TransientFailure,
- Picker: &picker{err: fmt.Errorf("name resolver error: %v", err)},
- })
-}
-
-func (b *pickfirstBalancer) UpdateClientConnState(state balancer.ClientConnState) error {
- addrs := state.ResolverState.Addresses
- if len(addrs) == 0 {
- // The resolver reported an empty address list. Treat it like an error by
- // calling b.ResolverError.
- if b.subConn != nil {
- // Shut down the old subConn. All addresses were removed, so it is
- // no longer valid.
- b.subConn.Shutdown()
- b.subConn = nil
- }
- b.ResolverError(errors.New("produced zero addresses"))
- return balancer.ErrBadResolverState
- }
-
- // We don't have to guard this block with the env var because ParseConfig
- // already does so.
- cfg, ok := state.BalancerConfig.(pfConfig)
- if state.BalancerConfig != nil && !ok {
- return fmt.Errorf("pickfirst: received illegal BalancerConfig (type %T): %v", state.BalancerConfig, state.BalancerConfig)
- }
- if cfg.ShuffleAddressList {
- addrs = append([]resolver.Address{}, addrs...)
- grpcrand.Shuffle(len(addrs), func(i, j int) { addrs[i], addrs[j] = addrs[j], addrs[i] })
- }
-
- if b.logger.V(2) {
- b.logger.Infof("Received new config %s, resolver state %s", pretty.ToJSON(cfg), pretty.ToJSON(state.ResolverState))
- }
-
- if b.subConn != nil {
- b.cc.UpdateAddresses(b.subConn, addrs)
- return nil
- }
-
- var subConn balancer.SubConn
- subConn, err := b.cc.NewSubConn(addrs, balancer.NewSubConnOptions{
- StateListener: func(state balancer.SubConnState) {
- b.updateSubConnState(subConn, state)
- },
- })
- if err != nil {
- if b.logger.V(2) {
- b.logger.Infof("Failed to create new SubConn: %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.subConn = subConn
- b.state = connectivity.Idle
- b.cc.UpdateState(balancer.State{
- ConnectivityState: connectivity.Connecting,
- Picker: &picker{err: balancer.ErrNoSubConnAvailable},
- })
- b.subConn.Connect()
- return nil
-}
-
-// UpdateSubConnState is unused as a StateListener is always registered when
-// creating SubConns.
-func (b *pickfirstBalancer) UpdateSubConnState(subConn balancer.SubConn, state balancer.SubConnState) {
- b.logger.Errorf("UpdateSubConnState(%v, %+v) called unexpectedly", subConn, state)
-}
-
-func (b *pickfirstBalancer) updateSubConnState(subConn balancer.SubConn, state balancer.SubConnState) {
- if b.logger.V(2) {
- b.logger.Infof("Received SubConn state update: %p, %+v", subConn, state)
- }
- if b.subConn != subConn {
- if b.logger.V(2) {
- b.logger.Infof("Ignored state change because subConn is not recognized")
- }
- return
- }
- if state.ConnectivityState == connectivity.Shutdown {
- b.subConn = nil
- return
- }
-
- switch state.ConnectivityState {
- case connectivity.Ready:
- b.cc.UpdateState(balancer.State{
- ConnectivityState: state.ConnectivityState,
- Picker: &picker{result: balancer.PickResult{SubConn: subConn}},
- })
- case connectivity.Connecting:
- if b.state == connectivity.TransientFailure {
- // We stay in TransientFailure until we are Ready. See A62.
- return
- }
- b.cc.UpdateState(balancer.State{
- ConnectivityState: state.ConnectivityState,
- Picker: &picker{err: balancer.ErrNoSubConnAvailable},
- })
- case connectivity.Idle:
- if b.state == connectivity.TransientFailure {
- // We stay in TransientFailure until we are Ready. Also kick the
- // subConn out of Idle into Connecting. See A62.
- b.subConn.Connect()
- return
- }
- b.cc.UpdateState(balancer.State{
- ConnectivityState: state.ConnectivityState,
- Picker: &idlePicker{subConn: subConn},
- })
- case connectivity.TransientFailure:
- b.cc.UpdateState(balancer.State{
- ConnectivityState: state.ConnectivityState,
- Picker: &picker{err: state.ConnectionError},
- })
- }
- b.state = state.ConnectivityState
-}
-
-func (b *pickfirstBalancer) Close() {
-}
-
-func (b *pickfirstBalancer) ExitIdle() {
- if b.subConn != nil && b.state == connectivity.Idle {
- b.subConn.Connect()
- }
-}
-
-type picker struct {
- result balancer.PickResult
- err error
-}
-
-func (p *picker) Pick(balancer.PickInfo) (balancer.PickResult, error) {
- return p.result, p.err
-}
-
-// idlePicker is used when the SubConn is IDLE and kicks the SubConn into
-// CONNECTING when Pick is called.
-type idlePicker struct {
- subConn balancer.SubConn
-}
-
-func (i *idlePicker) Pick(balancer.PickInfo) (balancer.PickResult, error) {
- i.subConn.Connect()
- return balancer.PickResult{}, balancer.ErrNoSubConnAvailable
-}