github.com/cockroachdb/cockroach@v20.2.0-alpha.1+incompatible/pkg/sql/pgwire/helpers_test.go (about)

     1  // Copyright 2017 The Cockroach Authors.
     2  //
     3  // Use of this software is governed by the Business Source License
     4  // included in the file licenses/BSL.txt.
     5  //
     6  // As of the Change Date specified in that file, in accordance with
     7  // the Business Source License, use of this software will be governed
     8  // by the Apache License, Version 2.0, included in the file
     9  // licenses/APL.txt.
    10  
    11  package pgwire
    12  
    13  import (
    14  	"context"
    15  	"time"
    16  )
    17  
    18  func (s *Server) DrainImpl(drainWait time.Duration, cancelWait time.Duration) error {
    19  	return s.drainImpl(drainWait, cancelWait, nil /* reporter */)
    20  }
    21  
    22  // OverwriteCancelMap overwrites all active connections' context.CancelFuncs so
    23  // that the cancellation of any context.CancelFunc in s.mu.connCancelMap does
    24  // not trigger a response by the associated connection. A slice of the original
    25  // context.CancelFuncs is returned.
    26  func (s *Server) OverwriteCancelMap() []context.CancelFunc {
    27  	s.mu.Lock()
    28  	defer s.mu.Unlock()
    29  	cancel := func() {}
    30  	originalCancels := make([]context.CancelFunc, 0, len(s.mu.connCancelMap))
    31  	for done, originalCancel := range s.mu.connCancelMap {
    32  		s.mu.connCancelMap[done] = cancel
    33  		originalCancels = append(originalCancels, originalCancel)
    34  	}
    35  	return originalCancels
    36  }