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SETUP_CHAINLINK.md

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Chainlink integration

We use docker to run a chainlink node

start a chainlink node

First we need to run chainlink node inside a docker container.

docker-compose up

Then to enable the chainlink mode you must set the CHAINLINK_NODE_URL variable inside the .env file to point to the chainlink node address, in case of this internal docker is http://chainlink:6688.

create external initiator

  1. connect to the chainlink docker instance
# use docket ps to find the container ID
docker exec -i -t d8a8d050044e /bin/bash
  1. login and create a new external initiator

the login credential are in chainlink/config/api

# default is [email protected]/password
chainlink admin login
  1. create a new initiator

the first parameter solana-flux-aggregator is the name, the second is the webhook url that will be call to execute a chainlink job.

chainlink initiators create solana-flux-aggregator http://external-ad:7654/chainlink/updatePrice

the create command will give us the external initiator credentials that need to be replaced it inside the .env file.

CHAINLINK_EI_ACCESSKEY=93d5a8d3b3a241fea7e726766ab3877b
CHAINLINK_EI_SECRET=h1b0HHY7hiWllo4TctKEQu+KbXtwunIUNFDC/xFmDMDLvohzoEnaZT2nq+ghdlHz

create chainlink bridge and job

We need to create a bridge telling the chainlink job which webhook to call.

First we access to the chainlink node UI at http://localhost:6688/bridges/new, login using the credential in chainlink/config/api and add a new bridge.

Name: solanafluxsubmitter
URL: http://external-ad:7654/chainlink/updatePrice

Then go to jobs and add a New Job

{
    "initiators": [
        {
            "type": "external",
            "params": {
                "name": "solana-flux-aggregator",
                "body": {}
            }
        }
    ],
    "tasks": [
        { "type": "solanafluxsubmitter" }
    ]
}

save the JobID in the CHAINLINK_EI_JOBID variable inside the .env file.

The webhook server host and port can be modify by changing the CHAINLINK_EXTERNAL_API_HOST and CHAINLINK_EXTERNAL_API_PORT variable inside the .env file.

start the ChainlinkExternalAdapter

Restart the container to get let the ChainlinkExternalAdapter pick up the new CHAINLINK_EI_JOBID.