iot-mqtt-client's Introduction

Test client for processing protocol buffers messages with AWS IoT Core

Part of the codecentric blog post "Processing protocol buffers messages with AWS IoT Core"

This is the client for sending protocol buffers messages to the AWS IoT Core MQTT endpoint.

Usage

Will send a protocol buffers message to MQTT endpoint every 10 seconds. This example code comes with an .env file. You need to supply following values (see blog article chapter "Configure environment variables " for further reference)

IOT_ENDPOINT - enter the device endpoint supplied by AWS IoT (see “Get your endpoint”). Looks something like this .iot.eu-central-1.amazonaws.com
CA_CERT_PATH - the absolute path of the downloaded AWS Root certificate e.g. AmazonRootCA1.pem
DEVICE_CERT_PATH - absolute path for the device certificate e.g. -certificate.pem.crt
DEVICE_KEY_PATH - the private key for the certificate e.g. -private.pem.key
TOPIC - the topic you want to send the protobuf messages to and where the IoT Core rule should listen to (use the one we configured in the policy, see “Create policy”)

Build and run

go build cmd/iot-prototype/main.go build main
./main execute main

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iot-mqtt-client's Issues

Invalid Go import path

Out of curiosity, after making sure I put the protoc-gen-go binary in my path, I ran:

protoc --proto_path=/home/me/iot-mqtt-client/ --go_out=/home/me/iot-mqtt-client/ /home/me/iot-mqtt-client/proto/device.proto

I got this error:

protoc-gen-go: invalid Go import path "proto" for "proto/device.proto"
The import path must contain at least one period ('.') or forward slash ('/') character.
See https://developers.google.com/protocol-buffers/docs/reference/go-generated#package for more information.
--go_out: protoc-gen-go: Plugin failed with status code 1.

Any ideas?

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