System Service

The System Service is a gRPC & Go based system resource tracker and system controller.

Table of Contents

• System.proto
• Cpu
• FirmwareInfo
• Limits
• LogRequest
• LogResponse
• ModelNumber
• Resource

• Stats

• SystemService

• Scalar Value Types

Top

System.proto

Cpu

Cpu type contains Cpu utilization at the current moment.

Field	Type	Label	Description
usedCpuPercentage	float		Percentage of used CPU e.g: 20.0
freeCpuPercentage	float		Percentage of available CPU e.g: 80.0
coreCount	int32		Total available core count for CPU.e.g 2C/4T CPU value will be 4
modelInfo	string		intel x64 etc..

FirmwareInfo

FirmwareInfo contains Firmware Version.

Field	Type	Label	Description
version	string		Firmware version.

Limits

System Limits for the Edge Runtime.

Field	Type	Label	Description
maxInstalledApplications	int32		Maximum allowed number of installed Edge applications.
maxRunningApplications	int32		Maximum allowed number of running Edge applications.
maxMemoryUsageInGB	float		Maximum allowed memory usage in Gigabytes.
maxStorageUsageInGB	float		Maximum allowed disk usage in Gigabytes.
maxCpuUsagePerecentage	float		Maximum allowed percentage of CPU usage.

LogRequest

LogRequest type, determines the destination path for saving log file.

Field	Type	Label	Description
saveFolderPath	string		Folder path for saving gathered logs.

LogResponse

LogResponse type, contains the full path for the collected log archive.

Field	Type	Label	Description
logPath	string		Full file path for collected log archive.

ModelNumber

ModelNumber type indicates device specific model information.

Field	Type	Label	Description
modelNumber	string		Can be MLFB for SIEMENS devices, for 3rd party vendors it can be any model information.

Resource

System Resource , memory or storage.

Field	Type	Label	Description
totalSpaceInGB	float		Total capacity of storage device in Gigabytes e.g: 3.5
freeSpaceInGB	float		Free space of storage device in Gigabytes e.g: 40.4
usedSpaceInGB	float		Used space of storage device in Gigabytes e.g: 23.2
percentageFreeSpace	float		Percentage of available space e.g: 3.5
percentageUsedSpace	float		Percentage of used space e.g: 96.5

Stats

System Utilization type. Cpu, storage and memory utilization.

Field	Type	Label	Description
cpu	Cpu		Cpu Utilization
storageDevices	Resource	repeated	StorageDevices array of Resource type.
memory	Resource		RAM Utilization Information
upTime	string		Elapsed time since the device is started.

SystemService

System service ,uses a UNIX Domain Socket "/var/run/devicemodel/system.sock" for GRPC communication. protoc generates both client and server instance for this Service. GRPC Status codes : https://developers.google.com/maps-booking/reference/grpc-api/status_codes .

Method Name	Request Type	Response Type	Description
RestartDevice	.google.protobuf.Empty	.google.protobuf.Empty	Restarts the device
ShutdownDevice	.google.protobuf.Empty	.google.protobuf.Empty	ShutsDown the device.
HardReset	.google.protobuf.Empty	.google.protobuf.Empty	Performs host side actions in addition to edge-core for hard reset. e.g: cleaning hard-reset flag(mandatory) ,custom Device Builder steps(optional) and finally reboots the system(mandatory).
GetModelNumber	.google.protobuf.Empty	ModelNumber	Returns model number (mlfb) for siemens or any type model for 3rd party vendors.
GetFirmwareInfo	.google.protobuf.Empty	FirmwareInfo	Returns firmware information of currently installed firmware
GetResourceStats	.google.protobuf.Empty	Stats	Returns current Cpu, Memory, Uptime and Storage usage
GetLimits	.google.protobuf.Empty	Limits	Returns limits for how many applications and how much cpu, ram and storage should be available for applications.
GetCustomSettings	.google.protobuf.Empty	.google.protobuf.Any	Returns device specific custom settings.
ApplyCustomSettings	.google.protobuf.Any	.google.protobuf.Empty	Applies device specific custom settings.
GetLogFile	LogRequest	LogResponse	Collects and compress all Journald logs (mandatory) from host ,(plus optional device specific log/report) and then returns a single file path for this new log archive.

Scalar Value Types

.proto Type	Notes	C++	Java	Python	Go	C#	PHP	Ruby
double		double	double	float	float64	double	float	Float
float		float	float	float	float32	float	float	Float
int32	Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead.	int32	int	int	int32	int	integer	Bignum or Fixnum (as required)
int64	Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead.	int64	long	int/long	int64	long	integer/string	Bignum
uint32	Uses variable-length encoding.	uint32	int	int/long	uint32	uint	integer	Bignum or Fixnum (as required)
uint64	Uses variable-length encoding.	uint64	long	int/long	uint64	ulong	integer/string	Bignum or Fixnum (as required)
sint32	Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s.	int32	int	int	int32	int	integer	Bignum or Fixnum (as required)
sint64	Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s.	int64	long	int/long	int64	long	integer/string	Bignum
fixed32	Always four bytes. More efficient than uint32 if values are often greater than 2^28.	uint32	int	int	uint32	uint	integer	Bignum or Fixnum (as required)
fixed64	Always eight bytes. More efficient than uint64 if values are often greater than 2^56.	uint64	long	int/long	uint64	ulong	integer/string	Bignum
sfixed32	Always four bytes.	int32	int	int	int32	int	integer	Bignum or Fixnum (as required)
sfixed64	Always eight bytes.	int64	long	int/long	int64	long	integer/string	Bignum
bool		bool	boolean	boolean	bool	bool	boolean	TrueClass/FalseClass
string	A string must always contain UTF-8 encoded or 7-bit ASCII text.	string	String	str/unicode	string	string	string	String (UTF-8)
bytes	May contain any arbitrary sequence of bytes.	string	ByteString	str	[]byte	ByteString	string	String (ASCII-8BIT)