[VOL-2193] Create mocks for Kafka Client and Etcd
This commit consists of:
1) A kafka client mock that implements the kafka client interface
under voltha-lib-go/pkg/kafka/client.go
2) An embedded Etcd server that runs in-process and represents an
Etcd server.
Change-Id: I52a36132568e08c596bb4136918bebcb654a3b99
diff --git a/vendor/go.etcd.io/etcd/etcdserver/api/v2store/ttl_key_heap.go b/vendor/go.etcd.io/etcd/etcdserver/api/v2store/ttl_key_heap.go
new file mode 100644
index 0000000..477d2b9
--- /dev/null
+++ b/vendor/go.etcd.io/etcd/etcdserver/api/v2store/ttl_key_heap.go
@@ -0,0 +1,97 @@
+// Copyright 2015 The etcd 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 v2store
+
+import "container/heap"
+
+// An TTLKeyHeap is a min-heap of TTLKeys order by expiration time
+type ttlKeyHeap struct {
+ array []*node
+ keyMap map[*node]int
+}
+
+func newTtlKeyHeap() *ttlKeyHeap {
+ h := &ttlKeyHeap{keyMap: make(map[*node]int)}
+ heap.Init(h)
+ return h
+}
+
+func (h ttlKeyHeap) Len() int {
+ return len(h.array)
+}
+
+func (h ttlKeyHeap) Less(i, j int) bool {
+ return h.array[i].ExpireTime.Before(h.array[j].ExpireTime)
+}
+
+func (h ttlKeyHeap) Swap(i, j int) {
+ // swap node
+ h.array[i], h.array[j] = h.array[j], h.array[i]
+
+ // update map
+ h.keyMap[h.array[i]] = i
+ h.keyMap[h.array[j]] = j
+}
+
+func (h *ttlKeyHeap) Push(x interface{}) {
+ n, _ := x.(*node)
+ h.keyMap[n] = len(h.array)
+ h.array = append(h.array, n)
+}
+
+func (h *ttlKeyHeap) Pop() interface{} {
+ old := h.array
+ n := len(old)
+ x := old[n-1]
+ // Set slice element to nil, so GC can recycle the node.
+ // This is due to golang GC doesn't support partial recycling:
+ // https://github.com/golang/go/issues/9618
+ old[n-1] = nil
+ h.array = old[0 : n-1]
+ delete(h.keyMap, x)
+ return x
+}
+
+func (h *ttlKeyHeap) top() *node {
+ if h.Len() != 0 {
+ return h.array[0]
+ }
+ return nil
+}
+
+func (h *ttlKeyHeap) pop() *node {
+ x := heap.Pop(h)
+ n, _ := x.(*node)
+ return n
+}
+
+func (h *ttlKeyHeap) push(x interface{}) {
+ heap.Push(h, x)
+}
+
+func (h *ttlKeyHeap) update(n *node) {
+ index, ok := h.keyMap[n]
+ if ok {
+ heap.Remove(h, index)
+ heap.Push(h, n)
+ }
+}
+
+func (h *ttlKeyHeap) remove(n *node) {
+ index, ok := h.keyMap[n]
+ if ok {
+ heap.Remove(h, index)
+ }
+}