SDK Reference

You can find the latest version of the Soracom Orbit SDK in the Downloads section.

AssemblyScript

The orbit-sdk-assemblyscript module contains the Orbit AssemblyScript SDK. Import the module into your code in order to use the methods.

import {
  log,
  getInputBuffer,
  getInputBufferAsString,
  getTagValue,
  getSourceValue,
  getLocation,
  getTimestamp,
  getUserdata,
  setOutputJSON,
} from "orbit-sdk-assemblyscript";

Function Signatures

Function	Returns	Description
log(message: string)	`void`	Output a string to the log.
getInputBuffer()	Uint8Array	Get the input data as an array of Uint8.
getInputBufferAsString()	string	Get the input data as a character string.
getTagValue(name: string)	string	Get the value of a tag from the data source (SIM). Returns an empty string if the tag name is not found.
getSourceValue(name: string)	string	Get the value of an attribute from the data source (SIM). Returns an empty string if the attribute is not found.
getLocation()	Location: { lat: f64, lon: f64 }	Get the Location object when using a plan-KM1 SIM. Returns `NaN` if the location is not available.
getTimestamp()	i64	Get the timestamp when Orbit received input data.
getUserdata()	string	Get the `userdata` attribute of the Metadata Service.
setOutputJSON(json: string)	`void`	Return JSON data to Orbit as the WASM module output data.

The SDK also includes functions that begin with the orbit_ prefix, which provide lower level functionality. These functions are wrapped in the methods above, which should be sufficient for most cases, however you can access these functions if you want to output in a format other than JSON:

Function	Returns	Description
orbit_set_output(json: i32, len: i32)	`void`	Return the data located in memory indicated by the pointer and length to Orbit as the WASM module output data.
orbit_set_output_content_type(type: i32, len: i32)	`void`	Return the data located in memory indicated by the pointer and length to Orbit as the WASM module output Content-Type.

Please refer to the SDK implementation for how to use the setOutputJSON() function.

Rust

The orbit-sdk-rust crate contains the Orbit Rust SDK. Include it in your code in order to use the methods.

use soracom_orbit_sdk as orbit;

Function Signatures

Function	Returns	Description
log(message: &str)	—	Output a string to the log.
get_input_buffer()	Vec<u8>	Get the input data as a u8a vector.
get_tag_value(name: &str)	String	Get the value of a tag from the data source (SIM). Returns an empty string if the tag name is not found.
get_source_value(name: &str)	String	Get the value of an attribute from the data source (SIM). Returns an empty string if the attribute is not found.
get_location()	Option<Location>: { lat: f64, lon: f64 }	Get the Location object when using a plan-KM1 SIM. Returns `None` if the location is not available.
get_timestamp()	i64	Get the timestamp when Orbit received input data.
get_userdata()	String	Get the `userdata` attribute of the Metadata Service.
set_output_json(jsonstr: &str_)	—	Return JSON data to Orbit as the WASM module output data.

Function	Returns	Description
orbit_set_output(ptr: i32, len: i32)	—	Return the data located in memory indicated by the pointer and length to Orbit as the WASM module output data.
orbit_set_output_content_type(ptr: i32, len: i32)	—	Return the data located in memory indicated by the pointer and length to Orbit as the WASM module output Content-Type.

Please refer to the SDK implementation for how to use the set_output_json() function.

C/C++

The orbit-sdk-c library contains the Orbit C/C++ SDK. Include it in your code in order to use the methods.

#include "soracom/orbit.h"

Function Signatures

Return Type	Function	Description
void	soracom_log(const char* fmt, ...)	Output a string to the log.
int32_t	soracom_get_input_buffer_as_string(const char** buf, size_t* siz)	Get the input data as a buffer. When you have finished using the input data, release the buffer using `soracom_release_input_buffer()` with the *buf pointer.
void	soracom_release_input_buffer(const char* buf)	Frees the memory allocated by `soracom_get_input_buffer_as_string()`.
int32_t	soracom_get_tag_value(const char* name, size_t name_len, const char** value, size_t* value_len)	Get the value of a tag from the data source (SIM). Returns an empty string if the tag name is not found.
int32_t	soracom_get_source_value(const char* name, size_t name_len, const char** value, size_t* value_len)	Get the value of an attribute from the data source (SIM). Returns an empty string if the attribute is not found.
int32_t	orbit_has_location()	Check if the location information of a plan-KM1 SIM can be obtained. Returns `1` if it can be obtained, and `0` if it cannot.
double	orbit_get_locatoin_lat()	Get the latitude value of the location information. Returns `undefined` if the location is not available.
double	orbit_get_locatoin_lon()	Get the longitude value of the location information. Returns `undefined` if the location is not available.
int64_t	orbit_get_timestamp()	Get the timestamp when Orbit received input data.
int32_t	soracom_get_userdata_as_string(const char** buf, size_t* siz)	Get the `userdata` attribute of the Metadata Service.
void	soracom_set_json_output(const char* buf, size_t siz)	Return JSON data to Orbit as the WASM module output data.

Return Type	Function	Description
void	orbit_set_output(const char* buf, size_t siz)	Return the data located in memory indicated by the pointer and length to Orbit as the WASM module output data.
void	orbit_set_output_content_type(const char* buf, size_t siz)	Return the data located in memory indicated by the pointer and length to Orbit as the WASM module output Content-Type.

Please refer to the SDK implementation for how to use the soracom_set_json_output() function.

TinyGo

The Orbit TinyGo SDK is provided at soracom/orbit-sdk-tinygo. Import it in your code in order to use the methods.

import sdk github.com/soracom/orbit-sdk-tinygo

Function Signatures

Function	Returns	Description
Log(msg string)	—	Output a string to the log.
GetInputBuffer()	([]byte, error)	Get the input data as a buffer. Returns `ErrNoInputBuffer` or `ErrInvalidInputBufferLength` if error occurred.
GetTagValue(name string)	([]byte, error)	Get the value of a tag from the data source (SIM). Returns `ErrNoTagValue` or `ErrInvalidTagValueLength` if error occurred.
GetSourceValue(name string)	([]byte, error)	Get the value of an attribute from the data source (SIM). Returns an empty string if the attribute is not found. Returns `ErrNoSourceValue` or `ErrInvalidSourceValueLength` if error occurred.
GetLocation()	(Location, error*)	Get the Location object when using a plan-KM1 SIM. Location struct should be `{ Lat: _float64_, Lon: _float64_ }`. Returns `ErrNoLocationInformation` if the location is not available.
GetTimestamp()	int64	Get the timestamp when Orbit received input data.
SetOutputJSON(out string)`	—	Return JSON data to Orbit as the WASM module output data.