Nevermined Gateway Events

Provider's events handler agent dealing with Keeper Contract events

Features

Monitors ServiceExecutionAgreement events and act as a provider agent to grant access and release reward for the publisher/provider. This is a critical part in the process of consuming data sets in the Nevermined Protocol network. Every provider in the network must run some sort of an events-handler to be able to fulfill the access condition of an Access service in an SEA .

This release only supports the Access service type that is defined in an Ocean DDO. More service types will be supported in the events-handler when they're added to the Ocean services.

Prerequisites

Python 3.6

Running Locally

First, clone this repository:

git clone git@github.com:nevermined-io/gateway-events.git
cd gateway-events/

Start a keeper node and other services of the ocean network:

git clone git@github.com:nevermined-io/tools.git
cd tools
bash start_nevermined.sh --no-commons --local-spree-node

Export environment variables PROVIDER_ADDRESS, PROVIDER_PASSWORD and PROVIDER_KEYFILE (or PROVIDER_ENCRYPTED_KEY). Use the values from the tox.ini file, or use your own. Instead of using keyfile and password, you can use the private key directly by setting the env var PROVIDER_KEY.

The most simple way to start is:

pip install -r requirements_dev.txt
export CONFIG_FILE=config.ini
./scripts/wait_for_migration_and_extract_keeper_artifacts.sh
./start_events_monitor.sh

Attribution

This project is based in the Ocean Protocol Events Handler. It keeps the same Apache v2 License and adds some improvements. See NOTICE file.

License

Copyright 2020 Keyko GmbH
This product includes software developed at
BigchainDB GmbH and Ocean Protocol (https://www.oceanprotocol.com/)

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.