Merge pull request #2102 from vrothberg/vendor-update

vendor: update everything

1 files changed, 33 insertions, 0 deletions

diff --git a/vendor/github.com/Microsoft/hcsshim/internal/hcs/watcher.go b/vendor/github.com/Microsoft/hcsshim/internal/hcs/watcher.go
new file mode 100644
index 000000000..e09dd1334
--- /dev/null
+++ b/vendor/github.com/Microsoft/hcsshim/internal/hcs/watcher.go
@@ -0,0 +1,33 @@
+package hcs
+
+import (
+	"time"
+
+	"github.com/Microsoft/hcsshim/internal/logfields"
+	"github.com/Microsoft/hcsshim/internal/timeout"
+	"github.com/sirupsen/logrus"
+)
+
+// syscallWatcher is used as a very simple goroutine around calls into
+// the platform. In some cases, we have seen HCS APIs not returning due to
+// various bugs, and the goroutine making the syscall ends up not returning,
+// prior to its async callback. By spinning up a syscallWatcher, it allows
+// us to at least log a warning if a syscall doesn't complete in a reasonable
+// amount of time.
+//
+// Usage is:
+//
+// completed := false
+// go syscallWatcher(context, &completed)
+// <syscall>
+// completed = true
+//
+func syscallWatcher(context logrus.Fields, syscallCompleted *bool) {
+	time.Sleep(timeout.SyscallWatcher)
+	if *syscallCompleted {
+		return
+	}
+	logrus.WithFields(context).
+		WithField(logfields.Timeout, timeout.SyscallWatcher).
+		Warning("Syscall did not complete within operation timeout. This may indicate a platform issue. If it appears to be making no forward progress, obtain the stacks and see if there is a syscall stuck in the platform API for a significant length of time.")
+}