initial add - go fmt on grpc
Change-Id: Ib0afadd2fe5571d1456a091f94f5644458f7d3f4
diff --git a/vendor/golang.org/x/net/http2/writesched_random.go b/vendor/golang.org/x/net/http2/writesched_random.go
new file mode 100644
index 0000000..36d7919
--- /dev/null
+++ b/vendor/golang.org/x/net/http2/writesched_random.go
@@ -0,0 +1,72 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package http2
+
+import "math"
+
+// NewRandomWriteScheduler constructs a WriteScheduler that ignores HTTP/2
+// priorities. Control frames like SETTINGS and PING are written before DATA
+// frames, but if no control frames are queued and multiple streams have queued
+// HEADERS or DATA frames, Pop selects a ready stream arbitrarily.
+func NewRandomWriteScheduler() WriteScheduler {
+ return &randomWriteScheduler{sq: make(map[uint32]*writeQueue)}
+}
+
+type randomWriteScheduler struct {
+ // zero are frames not associated with a specific stream.
+ zero writeQueue
+
+ // sq contains the stream-specific queues, keyed by stream ID.
+ // When a stream is idle or closed, it's deleted from the map.
+ sq map[uint32]*writeQueue
+
+ // pool of empty queues for reuse.
+ queuePool writeQueuePool
+}
+
+func (ws *randomWriteScheduler) OpenStream(streamID uint32, options OpenStreamOptions) {
+ // no-op: idle streams are not tracked
+}
+
+func (ws *randomWriteScheduler) CloseStream(streamID uint32) {
+ q, ok := ws.sq[streamID]
+ if !ok {
+ return
+ }
+ delete(ws.sq, streamID)
+ ws.queuePool.put(q)
+}
+
+func (ws *randomWriteScheduler) AdjustStream(streamID uint32, priority PriorityParam) {
+ // no-op: priorities are ignored
+}
+
+func (ws *randomWriteScheduler) Push(wr FrameWriteRequest) {
+ id := wr.StreamID()
+ if id == 0 {
+ ws.zero.push(wr)
+ return
+ }
+ q, ok := ws.sq[id]
+ if !ok {
+ q = ws.queuePool.get()
+ ws.sq[id] = q
+ }
+ q.push(wr)
+}
+
+func (ws *randomWriteScheduler) Pop() (FrameWriteRequest, bool) {
+ // Control frames first.
+ if !ws.zero.empty() {
+ return ws.zero.shift(), true
+ }
+ // Iterate over all non-idle streams until finding one that can be consumed.
+ for _, q := range ws.sq {
+ if wr, ok := q.consume(math.MaxInt32); ok {
+ return wr, true
+ }
+ }
+ return FrameWriteRequest{}, false
+}