publish-flow-graphql.md

Quickstart: Publish & Consume Flow for GraphQL data type

This quickstart describes a flow to publish & consume GraphQL-style URIs. In our example, the data asset is a query to find data NFTs via ocean-subgraph.

Here are the steps:

1. Setup
2. Publish dataset
3. Consume dataset

Let's go through each step.

1. Setup

Ensure that you've already (a) installed Ocean, and (b) set up locally or remotely.

2. Publish dataset

In the same Python console:

#data info
name = "Data NFTs in Ocean"
url="https://v4.subgraph.goerli.oceanprotocol.com/subgraphs/name/oceanprotocol/ocean-subgraph"
query="""query{
               nfts(orderBy: createdTimestamp,orderDirection:desc){
                    id
                    symbol
                    createdTimestamp
                    }
               }
"""

#create asset
(data_nft, datatoken, ddo) = ocean.assets.create_graphql_asset(name, url, query, {"from": alice})
print(f"Just published asset, with did={ddo.did}")

That's it! You've created a data asset of "GraphqlQuery" asset type. It includes a data NFT, a datatoken for the data NFT, and metadata.

3. Consume dataset

Consume here is just like in consume-flow. The file downloaded is a .json. From that, use the python json library to parse it as desired.