huhoo / iot-python

Client libraries and samples for connecting to the IBM Internet of Things Foundation using Python 2.7 or 3.4

IBM Internet of Things Foundation for Python

Python module for interacting with the IBM Internet of Things Foundation.

• Python 3.5
• Python 3.4
• Python 2.7

Note: Support for MQTT over SSL requires at least Python v2.7.9 or v3.4, and openssl v1.0.1

Dependencies

• paho-mqtt
• iso8601
• pytz
• requests

Installation

Install the latest version of the library with pip

[root@localhost ~]# pip install ibmiotf

Uninstall

Uninstalling the module is simple.

[root@localhost ~]# pip uninstall ibmiotf

Migrating from v0.0.x to v0.1.x

There is a significant change between the 0.0.x releases and 0.1.x that will require changes to client code. Now that the library properly supports multiple message formats you will want to update calls to deviceClient.publishEvent, appClient.publishEvent and appClient.publishCommand to also supply the desired message format.

Sample code v0.0.9:

deviceOptions = {"org": organization, "type": deviceType, "id": deviceId, "auth-method": authMethod, "auth-token": authToken}
deviceCli = ibmiotf.device.Client(deviceOptions)
myData = { 'hello' : 'world', 'x' : x}
deviceCli.publishEvent(event="greeting", data=myData)

Sample code v0.1.1:

deviceOptions = {"org": organization, "type": deviceType, "id": deviceId, "auth-method": authMethod, "auth-token": authToken}
deviceCli = ibmiotf.device.Client(deviceOptions)
myData = { 'hello' : 'world', 'x' : x}
deviceCli.publishEvent(event="greeting", msgFormat="json", data=myData)

Also, as part of this change, events and commands sent as format "json" will not be assumed to meet the IOTF JSON Payload Specification. The default client behaviour will be to parse commands and events with format "json" as a generic JSON object only. Only messages sent as format "json-iotf" will default to being decoded in this specification. This can be easily changed with the following code.

import ibmiotf.device
from ibmiotf.codecs import jsonIotfCodec

deviceOptions = {"org": organization, "type": deviceType, "id": deviceId, "auth-method": authMethod, "auth-token": authToken}
deviceCli = ibmiotf.device.Client(deviceOptions)
# Revert to v0.0.x parsing for json messages -- assume all JSON events and commands use the IOTF JSON payload specification
deviceCli.setMessageEncoderModule('json', jsonIotfCodec)

Documentation

• Device Client
• Application Client