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authorLibravatar Terin Stock <terinjokes@gmail.com>2025-03-09 17:47:56 +0100
committerLibravatar Terin Stock <terinjokes@gmail.com>2025-03-10 01:59:49 +0100
commit3ac1ee16f377d31a0fb80c8dae28b6239ac4229e (patch)
treef61faa581feaaeaba2542b9f2b8234a590684413 /vendor/google.golang.org/grpc/resolver_wrapper.go
parent[chore] update URLs to forked source (diff)
downloadgotosocial-3ac1ee16f377d31a0fb80c8dae28b6239ac4229e.tar.xz
[chore] remove vendor
Diffstat (limited to 'vendor/google.golang.org/grpc/resolver_wrapper.go')
-rw-r--r--vendor/google.golang.org/grpc/resolver_wrapper.go201
1 files changed, 0 insertions, 201 deletions
diff --git a/vendor/google.golang.org/grpc/resolver_wrapper.go b/vendor/google.golang.org/grpc/resolver_wrapper.go
deleted file mode 100644
index 23bb3fb25..000000000
--- a/vendor/google.golang.org/grpc/resolver_wrapper.go
+++ /dev/null
@@ -1,201 +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 (
- "context"
- "strings"
- "sync"
-
- "google.golang.org/grpc/internal/channelz"
- "google.golang.org/grpc/internal/grpcsync"
- "google.golang.org/grpc/internal/pretty"
- "google.golang.org/grpc/resolver"
- "google.golang.org/grpc/serviceconfig"
-)
-
-// ccResolverWrapper is a wrapper on top of cc for resolvers.
-// It implements resolver.ClientConn interface.
-type ccResolverWrapper struct {
- // The following fields are initialized when the wrapper is created and are
- // read-only afterwards, and therefore can be accessed without a mutex.
- cc *ClientConn
- ignoreServiceConfig bool
- serializer *grpcsync.CallbackSerializer
- serializerCancel context.CancelFunc
-
- resolver resolver.Resolver // only accessed within the serializer
-
- // The following fields are protected by mu. Caller must take cc.mu before
- // taking mu.
- mu sync.Mutex
- curState resolver.State
- closed bool
-}
-
-// newCCResolverWrapper initializes the ccResolverWrapper. It can only be used
-// after calling start, which builds the resolver.
-func newCCResolverWrapper(cc *ClientConn) *ccResolverWrapper {
- ctx, cancel := context.WithCancel(cc.ctx)
- return &ccResolverWrapper{
- cc: cc,
- ignoreServiceConfig: cc.dopts.disableServiceConfig,
- serializer: grpcsync.NewCallbackSerializer(ctx),
- serializerCancel: cancel,
- }
-}
-
-// start builds the name resolver using the resolver.Builder in cc and returns
-// any error encountered. It must always be the first operation performed on
-// any newly created ccResolverWrapper, except that close may be called instead.
-func (ccr *ccResolverWrapper) start() error {
- errCh := make(chan error)
- ccr.serializer.TrySchedule(func(ctx context.Context) {
- if ctx.Err() != nil {
- return
- }
- opts := resolver.BuildOptions{
- DisableServiceConfig: ccr.cc.dopts.disableServiceConfig,
- DialCreds: ccr.cc.dopts.copts.TransportCredentials,
- CredsBundle: ccr.cc.dopts.copts.CredsBundle,
- Dialer: ccr.cc.dopts.copts.Dialer,
- Authority: ccr.cc.authority,
- }
- var err error
- ccr.resolver, err = ccr.cc.resolverBuilder.Build(ccr.cc.parsedTarget, ccr, opts)
- errCh <- err
- })
- return <-errCh
-}
-
-func (ccr *ccResolverWrapper) resolveNow(o resolver.ResolveNowOptions) {
- ccr.serializer.TrySchedule(func(ctx context.Context) {
- if ctx.Err() != nil || ccr.resolver == nil {
- return
- }
- ccr.resolver.ResolveNow(o)
- })
-}
-
-// close initiates async shutdown of the wrapper. To determine the wrapper has
-// finished shutting down, the channel should block on ccr.serializer.Done()
-// without cc.mu held.
-func (ccr *ccResolverWrapper) close() {
- channelz.Info(logger, ccr.cc.channelz, "Closing the name resolver")
- ccr.mu.Lock()
- ccr.closed = true
- ccr.mu.Unlock()
-
- ccr.serializer.TrySchedule(func(context.Context) {
- if ccr.resolver == nil {
- return
- }
- ccr.resolver.Close()
- ccr.resolver = nil
- })
- ccr.serializerCancel()
-}
-
-// UpdateState is called by resolver implementations to report new state to gRPC
-// which includes addresses and service config.
-func (ccr *ccResolverWrapper) UpdateState(s resolver.State) error {
- ccr.cc.mu.Lock()
- ccr.mu.Lock()
- if ccr.closed {
- ccr.mu.Unlock()
- ccr.cc.mu.Unlock()
- return nil
- }
- if s.Endpoints == nil {
- s.Endpoints = make([]resolver.Endpoint, 0, len(s.Addresses))
- for _, a := range s.Addresses {
- ep := resolver.Endpoint{Addresses: []resolver.Address{a}, Attributes: a.BalancerAttributes}
- ep.Addresses[0].BalancerAttributes = nil
- s.Endpoints = append(s.Endpoints, ep)
- }
- }
- ccr.addChannelzTraceEvent(s)
- ccr.curState = s
- ccr.mu.Unlock()
- return ccr.cc.updateResolverStateAndUnlock(s, nil)
-}
-
-// ReportError is called by resolver implementations to report errors
-// encountered during name resolution to gRPC.
-func (ccr *ccResolverWrapper) ReportError(err error) {
- ccr.cc.mu.Lock()
- ccr.mu.Lock()
- if ccr.closed {
- ccr.mu.Unlock()
- ccr.cc.mu.Unlock()
- return
- }
- ccr.mu.Unlock()
- channelz.Warningf(logger, ccr.cc.channelz, "ccResolverWrapper: reporting error to cc: %v", err)
- ccr.cc.updateResolverStateAndUnlock(resolver.State{}, err)
-}
-
-// NewAddress is called by the resolver implementation to send addresses to
-// gRPC.
-func (ccr *ccResolverWrapper) NewAddress(addrs []resolver.Address) {
- ccr.cc.mu.Lock()
- ccr.mu.Lock()
- if ccr.closed {
- ccr.mu.Unlock()
- ccr.cc.mu.Unlock()
- return
- }
- s := resolver.State{Addresses: addrs, ServiceConfig: ccr.curState.ServiceConfig}
- ccr.addChannelzTraceEvent(s)
- ccr.curState = s
- ccr.mu.Unlock()
- ccr.cc.updateResolverStateAndUnlock(s, nil)
-}
-
-// ParseServiceConfig is called by resolver implementations to parse a JSON
-// representation of the service config.
-func (ccr *ccResolverWrapper) ParseServiceConfig(scJSON string) *serviceconfig.ParseResult {
- return parseServiceConfig(scJSON, ccr.cc.dopts.maxCallAttempts)
-}
-
-// addChannelzTraceEvent adds a channelz trace event containing the new
-// state received from resolver implementations.
-func (ccr *ccResolverWrapper) addChannelzTraceEvent(s resolver.State) {
- if !logger.V(0) && !channelz.IsOn() {
- return
- }
- var updates []string
- var oldSC, newSC *ServiceConfig
- var oldOK, newOK bool
- if ccr.curState.ServiceConfig != nil {
- oldSC, oldOK = ccr.curState.ServiceConfig.Config.(*ServiceConfig)
- }
- if s.ServiceConfig != nil {
- newSC, newOK = s.ServiceConfig.Config.(*ServiceConfig)
- }
- if oldOK != newOK || (oldOK && newOK && oldSC.rawJSONString != newSC.rawJSONString) {
- updates = append(updates, "service config updated")
- }
- if len(ccr.curState.Addresses) > 0 && len(s.Addresses) == 0 {
- updates = append(updates, "resolver returned an empty address list")
- } else if len(ccr.curState.Addresses) == 0 && len(s.Addresses) > 0 {
- updates = append(updates, "resolver returned new addresses")
- }
- channelz.Infof(logger, ccr.cc.channelz, "Resolver state updated: %s (%v)", pretty.ToJSON(s), strings.Join(updates, "; "))
-}