spatem-filter

A spatem-filter facilitates the filtering of spatial-temporal (spatem) IoT data data based on a standardised set of parameters.

spatem-filter is a lightweight Node.js package that is typically used with a chimps instance and the barnacles-x family of modules which relay spatem data to specific endpoints. Together these packages are core components of reelyActive's Pareto Anywhere open source IoT middleware.

See also the spatem-filter's sister modules, raddec-filter and dynamb-filter.

Hello spatem-filter!

const SpatemFilter = require('spatem-filter');

let parameters = {
    acceptedDeviceSignatures: [ 'aabbccddeeff/2', '112233445566/2' ],
    acceptedDeviceIds: [ 'aabbccddeeff', '112233445566' ],
    acceptedDeviceIdTypes: [ 2 ]
}

let filter = new SpatemFilter(parameters);

let spatem = { /* Spatem properties */ };

let accepted = filter.isPassing(spatem);

console.log(accepted); // true or false

See the reelyActive Developer's Cheatsheet for a detailed description of the spatem and its properties.

Filter parameters

The following parameters are supported:

acceptedDeviceSignatures

Array of device signatures to accept. A filtered spatem must have its device signature (deviceId and deviceIdType) included in the list to pass. For example, to only allow spatems from a device with EUI-48 identifier aa:bb:cc:dd:ee:ff to pass:

let acceptedDeviceSignatures = [ 'aabbccddeeff/2' ];

acceptedDeviceIds

Array of deviceIds to accept. A filtered spatem must have a deviceId included in the list to pass. For example, to only allow spatems from devices with the identifier aa:bb:cc:dd:ee:ff to pass:

let acceptedDeviceIds = [ 'aabbccddeeff' ];

acceptedDeviceIdTypes

Array of deviceIdTypes to accept. See the list of identifier types for details. A filtered spatem must have a deviceIdType included in the list to pass. For example, to only allow spatems from devices with EUI-48 and random 48-bit identifiers to pass:

let acceptedDeviceIdTypes = [ 2, 3 ];

Filter logic

The spatem-filter will iterate sequentially through each included filter parameter, and return false if any should fail. If all included filter parameters are passing, the spatem-filter will return true.

Contributing

Discover how to contribute to this open source project which upholds a standard code of conduct.

Security

Consult our security policy for best practices using this open source software and to report vulnerabilities.

License

MIT License

Copyright (c) 2025 reelyActive

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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

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