Welcome to Manta Python Documentation!

This is an implementation of the Manta payment protocol for Python 3. If you want to dive in you may choose to learn first of the Manta Protocol or if you want to try some code, head over to the API entries for the Store, Wallet and Payment Processor.

Requirements

This library is compatible only with Python 3.7+. If you want to use the available testing infrastructure to test your own components you will need to have mosquitto broker (or another MQTT broker) installed.

Installation

To install this library, just type the following commands:

$ pip install manta-python

or, if you want to use the testing infrastructure, execute instead:

$ pip install manta-python[runner]

Testing infrastructure

When installed with the testing infrastructure enable, you will find the command manta-runner in you execution path. If you have any problem finding it, you can run the equivalent python3 -m manta.testing.

The command is meant to take in a configuration file and run the specified services. A default configuration with all the services enabled can be obtained running the following command:

$ manta-runner --print-config

By default this configuration will start the mosquitto MQTT broker and all the example components that are used also in the tests, with their web port enabled:

To setup the services with this configuration, simply execute the following commands:

$ manta-runner --print-config > /tmp/demo.yaml
$ manta-runner -c /tmp/demo.yaml

You will obtain a log like the following:

INFO:manta.testing.broker:Started Mosquitto broker on interface 'localhost' and port 41627.
INFO:manta.payproc:Connected with result code 0
INFO:manta.payproc:Subscribed to 'merchant_order_request/+'
INFO:manta.payproc:Subscribed to 'merchant_order_cancel/+'
INFO:manta.testing.runner:Started service payproc on address 'localhost' and port 8081
INFO:manta.store:Connected
INFO:manta.testing.runner:Started service store on address 'localhost' and port 8080
INFO:manta.testing.runner:Started service wallet on address 'localhost' and port 8082
INFO:dummy-runner:Configured services are now running.
INFO:dummy-runner:==================== Hit CTRL-C to stop ====================
INFO:mosquitto:1551282335: New connection from ::1 on port 41627.
INFO:mosquitto:1551282335: New client connected from ::1 as b9109520-b7af-41bf-99d0-bf2425008bc6 (c1, k60).
INFO:mosquitto:1551282335: New connection from ::1 on port 41627.
INFO:mosquitto:1551282335: New client connected from ::1 as 066284b2-e8c7-41aa-9595-3432b12665a2 (c1, k60).

Like specified in the log, hit CTRL-C (or the equivalent keyboard combination that generates a KeyboardInterrupt exception on your OS) to teardown the services.

The configured services are automatically started and connected to the port exposed by the broker. If enabled (as it is by default) each configured service exposes a web service that can be used to execute key APIs of each. To know what the entrypoints are you have (for now) to look into the files in the manta.testing subpackage or to look into the tests in the github repository.

Single component runners

To ease the development of new components this library installs in your path executables to run the individual components, they are named manta-store, manta-payproc and manta-wallet. They are implemented by the same code of the collective runner but they offer a different user interface with more commandline arguments, e.g.:

$ manta-wallet --help
usage: manta-wallet [-h] [-b BROKER] [--broker-port BROKER_PORT] [-p WEB_PORT]
                    [--url URL] [-i] [-w WALLET] [-a ACCOUNT] [--cert CERT]
                    [-c CONF] [--print-config]

Run manta-python dummy wallet

optional arguments:
  -h, --help            show this help message and exit
  -b BROKER, --broker BROKER
                        MQTT broker hostname (default: 'localhost')
  --broker-port BROKER_PORT
                        MQTT broker port (default: 1883)
  -p WEB_PORT, --web-port WEB_PORT
                        enable web interface on the specified port
  --url URL             Manta-URL of the payment session to join and pay. It
                        will automatically end the session when payment is
                        completed
  -i, --interactive     enable interactive payment interface (default: False)
  -w WALLET, --wallet WALLET
                        hash of the nano wallet to use
  -a ACCOUNT, --account ACCOUNT
                        hash of the nano account
  --cert CERT           CA certificate used to validate the payment session
  -c CONF, --conf CONF  path of a config file to load
  --print-config        print a sample of the default configuration

All three expect for the broker to be up and running already. manta-payproc and manta-wallet accept also a specific configuration file, please use the --print-config option to get a sample of that file.

Tests

To run the tests you have to run the following commands:

$ git git@github.com:appiapay/manta-python.git
$ cd manta-python
$ pip install -r requirements-dev.txt

Be aware that the same requirements specified for the Testing Infrastructure apply here too. If you want to use your own MQTT broker you will have to modify the broker.start entry in the file tests/dummyconfig.yaml to false.

Then simply run:

$ make tests

or, if make isn’t available on your platform, just run:

$ pytest

Contents:

Indices and tables