1 files changed, 0 insertions, 194 deletions
diff --git a/vendor/google.golang.org/grpc/picker_wrapper.go b/vendor/google.golang.org/grpc/picker_wrapper.go
deleted file mode 100644
index c525dc0..0000000
--- a/vendor/google.golang.org/grpc/picker_wrapper.go
+++ /dev/null
@@ -1,194 +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"
-	"io"
-	"sync"
-
-	"google.golang.org/grpc/balancer"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/internal/channelz"
-	istatus "google.golang.org/grpc/internal/status"
-	"google.golang.org/grpc/internal/transport"
-	"google.golang.org/grpc/status"
-)
-
-// pickerWrapper is a wrapper of balancer.Picker. It blocks on certain pick
-// actions and unblock when there's a picker update.
-type pickerWrapper struct {
-	mu         sync.Mutex
-	done       bool
-	blockingCh chan struct{}
-	picker     balancer.Picker
-}
-
-func newPickerWrapper() *pickerWrapper {
-	return &pickerWrapper{blockingCh: make(chan struct{})}
-}
-
-// updatePicker is called by UpdateBalancerState. It unblocks all blocked pick.
-func (pw *pickerWrapper) updatePicker(p balancer.Picker) {
-	pw.mu.Lock()
-	if pw.done {
-		pw.mu.Unlock()
-		return
-	}
-	pw.picker = p
-	// pw.blockingCh should never be nil.
-	close(pw.blockingCh)
-	pw.blockingCh = make(chan struct{})
-	pw.mu.Unlock()
-}
-
-// doneChannelzWrapper performs the following:
-//   - increments the calls started channelz counter
-//   - wraps the done function in the passed in result to increment the calls
-//     failed or calls succeeded channelz counter before invoking the actual
-//     done function.
-func doneChannelzWrapper(acw *acBalancerWrapper, result *balancer.PickResult) {
-	acw.mu.Lock()
-	ac := acw.ac
-	acw.mu.Unlock()
-	ac.incrCallsStarted()
-	done := result.Done
-	result.Done = func(b balancer.DoneInfo) {
-		if b.Err != nil && b.Err != io.EOF {
-			ac.incrCallsFailed()
-		} else {
-			ac.incrCallsSucceeded()
-		}
-		if done != nil {
-			done(b)
-		}
-	}
-}
-
-// pick returns the transport that will be used for the RPC.
-// It may block in the following cases:
-// - there's no picker
-// - the current picker returns ErrNoSubConnAvailable
-// - the current picker returns other errors and failfast is false.
-// - the subConn returned by the current picker is not READY
-// When one of these situations happens, pick blocks until the picker gets updated.
-func (pw *pickerWrapper) pick(ctx context.Context, failfast bool, info balancer.PickInfo) (transport.ClientTransport, balancer.PickResult, error) {
-	var ch chan struct{}
-
-	var lastPickErr error
-	for {
-		pw.mu.Lock()
-		if pw.done {
-			pw.mu.Unlock()
-			return nil, balancer.PickResult{}, ErrClientConnClosing
-		}
-
-		if pw.picker == nil {
-			ch = pw.blockingCh
-		}
-		if ch == pw.blockingCh {
-			// This could happen when either:
-			// - pw.picker is nil (the previous if condition), or
-			// - has called pick on the current picker.
-			pw.mu.Unlock()
-			select {
-			case <-ctx.Done():
-				var errStr string
-				if lastPickErr != nil {
-					errStr = "latest balancer error: " + lastPickErr.Error()
-				} else {
-					errStr = ctx.Err().Error()
-				}
-				switch ctx.Err() {
-				case context.DeadlineExceeded:
-					return nil, balancer.PickResult{}, status.Error(codes.DeadlineExceeded, errStr)
-				case context.Canceled:
-					return nil, balancer.PickResult{}, status.Error(codes.Canceled, errStr)
-				}
-			case <-ch:
-			}
-			continue
-		}
-
-		ch = pw.blockingCh
-		p := pw.picker
-		pw.mu.Unlock()
-
-		pickResult, err := p.Pick(info)
-		if err != nil {
-			if err == balancer.ErrNoSubConnAvailable {
-				continue
-			}
-			if st, ok := status.FromError(err); ok {
-				// Status error: end the RPC unconditionally with this status.
-				// First restrict the code to the list allowed by gRFC A54.
-				if istatus.IsRestrictedControlPlaneCode(st) {
-					err = status.Errorf(codes.Internal, "received picker error with illegal status: %v", err)
-				}
-				return nil, balancer.PickResult{}, dropError{error: err}
-			}
-			// For all other errors, wait for ready RPCs should block and other
-			// RPCs should fail with unavailable.
-			if !failfast {
-				lastPickErr = err
-				continue
-			}
-			return nil, balancer.PickResult{}, status.Error(codes.Unavailable, err.Error())
-		}
-
-		acw, ok := pickResult.SubConn.(*acBalancerWrapper)
-		if !ok {
-			logger.Errorf("subconn returned from pick is type %T, not *acBalancerWrapper", pickResult.SubConn)
-			continue
-		}
-		if t := acw.getAddrConn().getReadyTransport(); t != nil {
-			if channelz.IsOn() {
-				doneChannelzWrapper(acw, &pickResult)
-				return t, pickResult, nil
-			}
-			return t, pickResult, nil
-		}
-		if pickResult.Done != nil {
-			// Calling done with nil error, no bytes sent and no bytes received.
-			// DoneInfo with default value works.
-			pickResult.Done(balancer.DoneInfo{})
-		}
-		logger.Infof("blockingPicker: the picked transport is not ready, loop back to repick")
-		// If ok == false, ac.state is not READY.
-		// A valid picker always returns READY subConn. This means the state of ac
-		// just changed, and picker will be updated shortly.
-		// continue back to the beginning of the for loop to repick.
-	}
-}
-
-func (pw *pickerWrapper) close() {
-	pw.mu.Lock()
-	defer pw.mu.Unlock()
-	if pw.done {
-		return
-	}
-	pw.done = true
-	close(pw.blockingCh)
-}
-
-// dropError is a wrapper error that indicates the LB policy wishes to drop the
-// RPC and not retry it.
-type dropError struct {
-	error
-}