Add CPU and RAM information to metrics
Bug: b/365537477
Test: manual, TH
Change-Id: Ia76caaff2324f29b1e806915cab77bbb26df4ecb
diff --git a/ui/metrics/hostinfo.go b/ui/metrics/hostinfo.go
new file mode 100644
index 0000000..f401b2a
--- /dev/null
+++ b/ui/metrics/hostinfo.go
@@ -0,0 +1,111 @@
+// Copyright 2024 Google Inc. All rights reserved.
+//
+// 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 metrics
+
+// The hostinfo* files contain code to extract host information from
+// /proc/cpuinfo and /proc/meminfo relevant to machine performance
+
+import (
+ "strconv"
+ "strings"
+)
+
+// CpuInfo holds information regarding the host's CPU cores.
+type CpuInfo struct {
+ // The vendor id
+ VendorId string
+
+ // The model name
+ ModelName string
+
+ // The number of CPU cores
+ CpuCores int32
+
+ // The CPU flags
+ Flags string
+}
+
+// MemInfo holds information regarding the host's memory.
+// The memory size in each of the field is in bytes.
+type MemInfo struct {
+ // The total memory.
+ MemTotal uint64
+
+ // The amount of free memory.
+ MemFree uint64
+
+ // The amount of available memory.
+ MemAvailable uint64
+}
+
+// fillCpuInfo takes the key and value, converts the value
+// to the proper size unit and is stores it in CpuInfo.
+func (c *CpuInfo) fillInfo(key, value string) {
+ switch key {
+ case "vendor_id":
+ c.VendorId = value
+ case "model name":
+ c.ModelName = value
+ case "cpu cores":
+ v, err := strconv.ParseInt(value, 10, 32)
+ if err == nil {
+ c.CpuCores = int32(v)
+ }
+ case "flags":
+ c.Flags = value
+ default:
+ // Ignore unknown keys
+ }
+}
+
+// fillCpuInfo takes the key and value, converts the value
+// to the proper size unit and is stores it in CpuInfo.
+func (m *MemInfo) fillInfo(key, value string) {
+ v := strToUint64(value)
+ switch key {
+ case "MemTotal":
+ m.MemTotal = v
+ case "MemFree":
+ m.MemFree = v
+ case "MemAvailable":
+ m.MemAvailable = v
+ default:
+ // Ignore unknown keys
+ }
+}
+
+// strToUint64 takes the string and converts to unsigned 64-bit integer.
+// If the string contains a memory unit such as kB and is converted to
+// bytes.
+func strToUint64(v string) uint64 {
+ // v could be "1024 kB" so scan for the empty space and
+ // split between the value and the unit.
+ var separatorIndex int
+ if separatorIndex = strings.IndexAny(v, " "); separatorIndex < 0 {
+ separatorIndex = len(v)
+ }
+ value, err := strconv.ParseUint(v[:separatorIndex], 10, 64)
+ if err != nil {
+ return 0
+ }
+
+ var scale uint64 = 1
+ switch strings.TrimSpace(v[separatorIndex:]) {
+ case "kB", "KB":
+ scale = 1024
+ case "mB", "MB":
+ scale = 1024 * 1024
+ }
+ return value * scale
+}