Communication Manager (CM)

Introduction

Communication Manager (CM) is the main AosCore component. It communicates with AosCloud and manages connections with other AosCore components such as IAM, SM, and UM. It consists of the following modules:

Communication Manager modules

Module	Description
fcrypt	a crypto module used to establish a secure connection with AosCloud and AosEdge components and to decrypt end verify data received from AosCloud.
amqphandler	serves AMQP connections with AosCloud.
cloudprotocol	describes cloud protocol messages, constants, etc.
downloader	downloads SOTA and FOTA update images
config	parses CM configuration files.
database	used to store persistent CM data.
alerts	collects, aggregates, and sends different kinds of alerts. For example, download alerts, service errors, system errors, etc.
monitoring	collects system monitoring data (e.g. CPU, RAM, disk usage) and sends it to AosCloud.
unitstatushandler	sends the current unit status and performs SOTA and FOTA updates.
iamclient	provides the communication to the AosEdge IAM.
smcontroller	communicates with AosEdge SM's.
Update Manager controller	implements SOTA/FOTA logic
cmserver	gRPC server to trigger the SOTA/FOTA update. This module is a part of the update scheduler mechanism.
statestorage	service instances state storage realization.
imagemanager	package responsible for storing encrypted services and layers images