[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/github.com/prometheus/procfs/proc_status.go b/vendor/github.com/prometheus/procfs/proc_status.go
new file mode 100644
index 0000000..6b4b61f
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc_status.go
@@ -0,0 +1,162 @@
+// Copyright 2018 The Prometheus 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 procfs
+
+import (
+ "bytes"
+ "io/ioutil"
+ "os"
+ "strconv"
+ "strings"
+)
+
+// ProcStat provides status information about the process,
+// read from /proc/[pid]/stat.
+type ProcStatus struct {
+ // The process ID.
+ PID int
+ // The process name.
+ Name string
+
+ // Peak virtual memory size.
+ VmPeak uint64
+ // Virtual memory size.
+ VmSize uint64
+ // Locked memory size.
+ VmLck uint64
+ // Pinned memory size.
+ VmPin uint64
+ // Peak resident set size.
+ VmHWM uint64
+ // Resident set size (sum of RssAnnon RssFile and RssShmem).
+ VmRSS uint64
+ // Size of resident anonymous memory.
+ RssAnon uint64
+ // Size of resident file mappings.
+ RssFile uint64
+ // Size of resident shared memory.
+ RssShmem uint64
+ // Size of data segments.
+ VmData uint64
+ // Size of stack segments.
+ VmStk uint64
+ // Size of text segments.
+ VmExe uint64
+ // Shared library code size.
+ VmLib uint64
+ // Page table entries size.
+ VmPTE uint64
+ // Size of second-level page tables.
+ VmPMD uint64
+ // Swapped-out virtual memory size by anonymous private.
+ VmSwap uint64
+ // Size of hugetlb memory portions
+ HugetlbPages uint64
+
+ // Number of voluntary context switches.
+ VoluntaryCtxtSwitches uint64
+ // Number of involuntary context switches.
+ NonVoluntaryCtxtSwitches uint64
+}
+
+// NewStatus returns the current status information of the process.
+func (p Proc) NewStatus() (ProcStatus, error) {
+ f, err := os.Open(p.path("status"))
+ if err != nil {
+ return ProcStatus{}, err
+ }
+ defer f.Close()
+
+ data, err := ioutil.ReadAll(f)
+ if err != nil {
+ return ProcStatus{}, err
+ }
+
+ s := ProcStatus{PID: p.PID}
+
+ lines := strings.Split(string(data), "\n")
+ for _, line := range lines {
+ if !bytes.Contains([]byte(line), []byte(":")) {
+ continue
+ }
+
+ kv := strings.SplitN(line, ":", 2)
+
+ // removes spaces
+ k := string(strings.TrimSpace(kv[0]))
+ v := string(strings.TrimSpace(kv[1]))
+ // removes "kB"
+ v = string(bytes.Trim([]byte(v), " kB"))
+
+ // value to int when possible
+ // we can skip error check here, 'cause vKBytes is not used when value is a string
+ vKBytes, _ := strconv.ParseUint(v, 10, 64)
+ // convert kB to B
+ vBytes := vKBytes * 1024
+
+ s.fillStatus(k, v, vKBytes, vBytes)
+ }
+
+ return s, nil
+}
+
+func (s *ProcStatus) fillStatus(k string, vString string, vUint uint64, vUintBytes uint64) {
+ switch k {
+ case "Name":
+ s.Name = vString
+ case "VmPeak":
+ s.VmPeak = vUintBytes
+ case "VmSize":
+ s.VmSize = vUintBytes
+ case "VmLck":
+ s.VmLck = vUintBytes
+ case "VmPin":
+ s.VmPin = vUintBytes
+ case "VmHWM":
+ s.VmHWM = vUintBytes
+ case "VmRSS":
+ s.VmRSS = vUintBytes
+ case "RssAnon":
+ s.RssAnon = vUintBytes
+ case "RssFile":
+ s.RssFile = vUintBytes
+ case "RssShmem":
+ s.RssShmem = vUintBytes
+ case "VmData":
+ s.VmData = vUintBytes
+ case "VmStk":
+ s.VmStk = vUintBytes
+ case "VmExe":
+ s.VmExe = vUintBytes
+ case "VmLib":
+ s.VmLib = vUintBytes
+ case "VmPTE":
+ s.VmPTE = vUintBytes
+ case "VmPMD":
+ s.VmPMD = vUintBytes
+ case "VmSwap":
+ s.VmSwap = vUintBytes
+ case "HugetlbPages":
+ s.HugetlbPages = vUintBytes
+ case "voluntary_ctxt_switches":
+ s.VoluntaryCtxtSwitches = vUint
+ case "nonvoluntary_ctxt_switches":
+ s.NonVoluntaryCtxtSwitches = vUint
+ }
+}
+
+// TotalCtxtSwitches returns the total context switch.
+func (s ProcStatus) TotalCtxtSwitches() uint64 {
+ return s.VoluntaryCtxtSwitches + s.NonVoluntaryCtxtSwitches
+}