Collect total number of CPU cores and available RAM for each build.

Collect the total number of CPU cores and available RAM for each build
as part of the system resource info. This is to know what kind of
build machines that the developers are using.

Bug: b/169453825
Test: m nothing and ran printproto on soong_metrics to validate the
      data.
Change-Id: I8617bdb9490b37d7689abd27d349af1a651533db
diff --git a/ui/build/config.go b/ui/build/config.go
index fe74ace..fbe5cd2 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -303,6 +303,12 @@
 		UseRbe:       proto.Bool(config.UseRBE()),
 	}
 	ctx.Metrics.BuildConfig(b)
+
+	s := &smpb.SystemResourceInfo{
+		TotalPhysicalMemory: proto.Uint64(config.TotalRAM()),
+		AvailableCpus:       proto.Int32(int32(runtime.NumCPU())),
+	}
+	ctx.Metrics.SystemResourceInfo(s)
 }
 
 // getConfigArgs processes the command arguments based on the build action and creates a set of new
diff --git a/ui/metrics/metrics.go b/ui/metrics/metrics.go
index a13a106..35d1976 100644
--- a/ui/metrics/metrics.go
+++ b/ui/metrics/metrics.go
@@ -70,6 +70,10 @@
 	m.metrics.BuildConfig = b
 }
 
+func (m *Metrics) SystemResourceInfo(b *soong_metrics_proto.SystemResourceInfo) {
+	m.metrics.SystemResourceInfo = b
+}
+
 func (m *Metrics) SetMetadataMetrics(metadata map[string]string) {
 	for k, v := range metadata {
 		switch k {
diff --git a/ui/metrics/metrics_proto/metrics.pb.go b/ui/metrics/metrics_proto/metrics.pb.go
index 95ef4da..e824f6b 100644
--- a/ui/metrics/metrics_proto/metrics.pb.go
+++ b/ui/metrics/metrics_proto/metrics.pb.go
@@ -152,7 +152,7 @@
 }
 
 func (ModuleTypeInfo_BuildSystem) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_6039342a2ba47b72, []int{3, 0}
+	return fileDescriptor_6039342a2ba47b72, []int{4, 0}
 }
 
 type MetricsBase struct {
@@ -200,11 +200,13 @@
 	Total             *PerfInfo          `protobuf:"bytes,21,opt,name=total" json:"total,omitempty"`
 	SoongBuildMetrics *SoongBuildMetrics `protobuf:"bytes,22,opt,name=soong_build_metrics,json=soongBuildMetrics" json:"soong_build_metrics,omitempty"`
 	BuildConfig       *BuildConfig       `protobuf:"bytes,23,opt,name=build_config,json=buildConfig" json:"build_config,omitempty"`
-	// The hostname of the machine
-	Hostname             *string  `protobuf:"bytes,24,opt,name=hostname" json:"hostname,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
+	// The hostname of the machine.
+	Hostname *string `protobuf:"bytes,24,opt,name=hostname" json:"hostname,omitempty"`
+	// The system resource information such as total physical memory.
+	SystemResourceInfo   *SystemResourceInfo `protobuf:"bytes,25,opt,name=system_resource_info,json=systemResourceInfo" json:"system_resource_info,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}            `json:"-"`
+	XXX_unrecognized     []byte              `json:"-"`
+	XXX_sizecache        int32               `json:"-"`
 }
 
 func (m *MetricsBase) Reset()         { *m = MetricsBase{} }
@@ -405,6 +407,13 @@
 	return ""
 }
 
+func (m *MetricsBase) GetSystemResourceInfo() *SystemResourceInfo {
+	if m != nil {
+		return m.SystemResourceInfo
+	}
+	return nil
+}
+
 type BuildConfig struct {
 	UseGoma              *bool    `protobuf:"varint,1,opt,name=use_goma,json=useGoma" json:"use_goma,omitempty"`
 	UseRbe               *bool    `protobuf:"varint,2,opt,name=use_rbe,json=useRbe" json:"use_rbe,omitempty"`
@@ -460,6 +469,55 @@
 	return false
 }
 
+type SystemResourceInfo struct {
+	// The total physical memory in bytes.
+	TotalPhysicalMemory *uint64 `protobuf:"varint,1,opt,name=total_physical_memory,json=totalPhysicalMemory" json:"total_physical_memory,omitempty"`
+	// The total of available cores for building
+	AvailableCpus        *int32   `protobuf:"varint,2,opt,name=available_cpus,json=availableCpus" json:"available_cpus,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *SystemResourceInfo) Reset()         { *m = SystemResourceInfo{} }
+func (m *SystemResourceInfo) String() string { return proto.CompactTextString(m) }
+func (*SystemResourceInfo) ProtoMessage()    {}
+func (*SystemResourceInfo) Descriptor() ([]byte, []int) {
+	return fileDescriptor_6039342a2ba47b72, []int{2}
+}
+
+func (m *SystemResourceInfo) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SystemResourceInfo.Unmarshal(m, b)
+}
+func (m *SystemResourceInfo) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SystemResourceInfo.Marshal(b, m, deterministic)
+}
+func (m *SystemResourceInfo) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SystemResourceInfo.Merge(m, src)
+}
+func (m *SystemResourceInfo) XXX_Size() int {
+	return xxx_messageInfo_SystemResourceInfo.Size(m)
+}
+func (m *SystemResourceInfo) XXX_DiscardUnknown() {
+	xxx_messageInfo_SystemResourceInfo.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SystemResourceInfo proto.InternalMessageInfo
+
+func (m *SystemResourceInfo) GetTotalPhysicalMemory() uint64 {
+	if m != nil && m.TotalPhysicalMemory != nil {
+		return *m.TotalPhysicalMemory
+	}
+	return 0
+}
+
+func (m *SystemResourceInfo) GetAvailableCpus() int32 {
+	if m != nil && m.AvailableCpus != nil {
+		return *m.AvailableCpus
+	}
+	return 0
+}
+
 type PerfInfo struct {
 	// The description for the phase/action/part while the tool running.
 	Desc *string `protobuf:"bytes,1,opt,name=desc" json:"desc,omitempty"`
@@ -482,7 +540,7 @@
 func (m *PerfInfo) String() string { return proto.CompactTextString(m) }
 func (*PerfInfo) ProtoMessage()    {}
 func (*PerfInfo) Descriptor() ([]byte, []int) {
-	return fileDescriptor_6039342a2ba47b72, []int{2}
+	return fileDescriptor_6039342a2ba47b72, []int{3}
 }
 
 func (m *PerfInfo) XXX_Unmarshal(b []byte) error {
@@ -554,7 +612,7 @@
 func (m *ModuleTypeInfo) String() string { return proto.CompactTextString(m) }
 func (*ModuleTypeInfo) ProtoMessage()    {}
 func (*ModuleTypeInfo) Descriptor() ([]byte, []int) {
-	return fileDescriptor_6039342a2ba47b72, []int{3}
+	return fileDescriptor_6039342a2ba47b72, []int{4}
 }
 
 func (m *ModuleTypeInfo) XXX_Unmarshal(b []byte) error {
@@ -612,7 +670,7 @@
 func (m *CriticalUserJourneyMetrics) String() string { return proto.CompactTextString(m) }
 func (*CriticalUserJourneyMetrics) ProtoMessage()    {}
 func (*CriticalUserJourneyMetrics) Descriptor() ([]byte, []int) {
-	return fileDescriptor_6039342a2ba47b72, []int{4}
+	return fileDescriptor_6039342a2ba47b72, []int{5}
 }
 
 func (m *CriticalUserJourneyMetrics) XXX_Unmarshal(b []byte) error {
@@ -659,7 +717,7 @@
 func (m *CriticalUserJourneysMetrics) String() string { return proto.CompactTextString(m) }
 func (*CriticalUserJourneysMetrics) ProtoMessage()    {}
 func (*CriticalUserJourneysMetrics) Descriptor() ([]byte, []int) {
-	return fileDescriptor_6039342a2ba47b72, []int{5}
+	return fileDescriptor_6039342a2ba47b72, []int{6}
 }
 
 func (m *CriticalUserJourneysMetrics) XXX_Unmarshal(b []byte) error {
@@ -707,7 +765,7 @@
 func (m *SoongBuildMetrics) String() string { return proto.CompactTextString(m) }
 func (*SoongBuildMetrics) ProtoMessage()    {}
 func (*SoongBuildMetrics) Descriptor() ([]byte, []int) {
-	return fileDescriptor_6039342a2ba47b72, []int{6}
+	return fileDescriptor_6039342a2ba47b72, []int{7}
 }
 
 func (m *SoongBuildMetrics) XXX_Unmarshal(b []byte) error {
@@ -769,6 +827,7 @@
 	proto.RegisterEnum("soong_build_metrics.ModuleTypeInfo_BuildSystem", ModuleTypeInfo_BuildSystem_name, ModuleTypeInfo_BuildSystem_value)
 	proto.RegisterType((*MetricsBase)(nil), "soong_build_metrics.MetricsBase")
 	proto.RegisterType((*BuildConfig)(nil), "soong_build_metrics.BuildConfig")
+	proto.RegisterType((*SystemResourceInfo)(nil), "soong_build_metrics.SystemResourceInfo")
 	proto.RegisterType((*PerfInfo)(nil), "soong_build_metrics.PerfInfo")
 	proto.RegisterType((*ModuleTypeInfo)(nil), "soong_build_metrics.ModuleTypeInfo")
 	proto.RegisterType((*CriticalUserJourneyMetrics)(nil), "soong_build_metrics.CriticalUserJourneyMetrics")
@@ -781,71 +840,76 @@
 }
 
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+	0x9c, 0x93, 0x6b, 0xbf, 0xd4, 0xdb, 0xb6, 0xae, 0x3b, 0xc2, 0x7f, 0x83, 0x7f, 0x07, 0x00, 0x00,
+	0xff, 0xff, 0xa3, 0xdd, 0xbb, 0xb3, 0x1d, 0x0a, 0x00, 0x00,
 }
diff --git a/ui/metrics/metrics_proto/metrics.proto b/ui/metrics/metrics_proto/metrics.proto
index 4e8e12b..3586be0 100644
--- a/ui/metrics/metrics_proto/metrics.proto
+++ b/ui/metrics/metrics_proto/metrics.proto
@@ -99,6 +99,9 @@
 
   // The hostname of the machine.
   optional string hostname = 24;
+
+  // The system resource information such as total physical memory.
+  optional SystemResourceInfo system_resource_info = 25;
 }
 
 message BuildConfig {
@@ -109,6 +112,14 @@
   optional bool force_use_goma = 3;
 }
 
+message SystemResourceInfo {
+  // The total physical memory in bytes.
+  optional uint64 total_physical_memory = 1;
+
+  // The total of available cores for building
+  optional int32 available_cpus = 2;
+}
+
 message PerfInfo {
   // The description for the phase/action/part while the tool running.
   optional string desc = 1;