diff options
Diffstat (limited to 'vendor/google.golang.org/grpc/balancer/conn_state_evaluator.go')
-rw-r--r-- | vendor/google.golang.org/grpc/balancer/conn_state_evaluator.go | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/vendor/google.golang.org/grpc/balancer/conn_state_evaluator.go b/vendor/google.golang.org/grpc/balancer/conn_state_evaluator.go deleted file mode 100644 index c33413581..000000000 --- a/vendor/google.golang.org/grpc/balancer/conn_state_evaluator.go +++ /dev/null @@ -1,74 +0,0 @@ -/* - * - * Copyright 2022 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 balancer - -import "google.golang.org/grpc/connectivity" - -// ConnectivityStateEvaluator takes the connectivity states of multiple SubConns -// and returns one aggregated connectivity state. -// -// It's not thread safe. -type ConnectivityStateEvaluator struct { - numReady uint64 // Number of addrConns in ready state. - numConnecting uint64 // Number of addrConns in connecting state. - numTransientFailure uint64 // Number of addrConns in transient failure state. - numIdle uint64 // Number of addrConns in idle state. -} - -// RecordTransition records state change happening in subConn and based on that -// it evaluates what aggregated state should be. -// -// - If at least one SubConn in Ready, the aggregated state is Ready; -// - Else if at least one SubConn in Connecting, the aggregated state is Connecting; -// - Else if at least one SubConn is Idle, the aggregated state is Idle; -// - Else if at least one SubConn is TransientFailure (or there are no SubConns), the aggregated state is Transient Failure. -// -// Shutdown is not considered. -func (cse *ConnectivityStateEvaluator) RecordTransition(oldState, newState connectivity.State) connectivity.State { - // Update counters. - for idx, state := range []connectivity.State{oldState, newState} { - updateVal := 2*uint64(idx) - 1 // -1 for oldState and +1 for new. - switch state { - case connectivity.Ready: - cse.numReady += updateVal - case connectivity.Connecting: - cse.numConnecting += updateVal - case connectivity.TransientFailure: - cse.numTransientFailure += updateVal - case connectivity.Idle: - cse.numIdle += updateVal - } - } - return cse.CurrentState() -} - -// CurrentState returns the current aggregate conn state by evaluating the counters -func (cse *ConnectivityStateEvaluator) CurrentState() connectivity.State { - // Evaluate. - if cse.numReady > 0 { - return connectivity.Ready - } - if cse.numConnecting > 0 { - return connectivity.Connecting - } - if cse.numIdle > 0 { - return connectivity.Idle - } - return connectivity.TransientFailure -} |