Amazon Web Services Greengrass Library¶

The Zerynth AWS Greengrass Library contains helper functions for IoT devices to retrieve info about an AWS Greengrass Core.

The DiscoveryInfo class¶

class DiscoveryInfo¶

class DiscoveryInfo(raw_info)

A DiscoveryInfo instance is returned by greengrass.discover() function.

It exposes the following attributes and methods:

• DiscoveryInfo.raw dictionary containing raw discovery response.
• DiscoveryInfo.CA()
• DiscoveryInfo.connectivity()

DiscoveryInfo.CA¶

CA()

Returns Greengrass Core CA Certificate if only one Server Certificate is returned by discover call. Raises GreengrassDiscoveryInfoException if more than one certificate is returned.

DiscoveryInfo.connectivity¶

connectivity()

Returns a tuple (core_address, core_port) with Greengrass Core address and port if only one Core is returned by discover call. Raises GreengrassDiscoveryInfoException if more than one Core is returned.

Helper Functions¶

discover¶

discover(endpoint, thingname, clicert, pkey, cacert=None)

• param endpoint: AWS server where to retrieve Greengrass core info
• param thingname: AWS IoT Core or AWS Greengrass Device name
• param clicert: client certificate
• param pkey: client private key

Discover info about own group Greengrass Core. Returns a DiscoveryInfo() object.