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Fix gcplogs memory/connection leak

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The cloud logging client should be closed when the log driver is closed. Otherwise dockerd will keep a gRPC connection to the logging endpoint open indefinitely.

This results in a slow leak of tcp sockets (1) and memory (~200Kb) any time that a container using `--log-driver=gcplogs` is terminates.

Signed-off-by: Patrick Haas <patrickhaas@google.com>
(cherry picked from commit ef553e14a4)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Patrick Haas 2020-09-30 14:52:22 -07:00 committed by Sebastiaan van Stijn
parent 88623e101c
commit 74c0c5b7f1
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GPG key ID: 76698F39D527CE8C
1 changed files with 3 additions and 1 deletions
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4
daemon/logger/gcplogs/gcplogging.go
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@ -53,6 +53,7 @@ func init() {
}
type gcplogs struct {
client *logging.Client
logger *logging.Logger
instance *instanceInfo
container *containerInfo
@ -169,6 +170,7 @@ func New(info logger.Info) (logger.Logger, error) {
}
l := &gcplogs{
client: c,
logger: lg,
container: &containerInfo{
Name: info.ContainerName,
@ -236,7 +238,7 @@ func (l *gcplogs) Log(m *logger.Message) error {
func (l *gcplogs) Close() error {
l.logger.Flush()
return nil
return l.client.Close()
}
func (l *gcplogs) Name() string {