🐳 Publisher events handler agent dealing with Keeper Contract events.
Provider's events handler agent dealing with Keeper Contract events
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 Ocean 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
This release only supports the
Access service type that is defined in an
DDO. More service types will be supported in the events-handler when
they're added to the Ocean services.
First, clone this repository:
git clone firstname.lastname@example.org:oceanprotocol/events-handler.git cd events-handler/
Start a keeper node and other services of the ocean network:
git clone email@example.com:oceanprotocol/barge.git cd barge bash start_ocean.sh --no-events-handler --no-commons --local-spree-node
Barge is the repository where all the Ocean Docker Compose files are located.
We are running the script
start_ocean.sh: the easy way to have Ocean projects
up and running. We run without an events-handler instance because we will run it directly.
To learn more about Barge, visit the Barge repository.
Note that it runs an Aquarius instance and an Elasticsearch instance but Aquarius can also work with BigchainDB or MongoDB.
Export environment variables
PROVIDER_ENCRYPTED_KEY). Use the values from the
tox.ini file, or use
Instead of using keyfile and password, you can use the private key directly
by setting the env var
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
Once the events-handler is running, you can use the Ocean API (Squid library available in python, node,
and java implementation) to publish an asset and start a consume request. For more details on using the
Ocean ecosystem please refer to Ocean API
To run the events-handler as a provider, you can either run it from source as described above or
use a docker image
docker pull oceanprotocol/events-handler:latest. To run the docker image
please refer to the docker-compose file in barge events_handler.yml
Automatic tests are setup via Travis, executing
Our test use pytest framework.
Copyright 2018 Ocean Protocol Foundation Ltd. 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.
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