IPFS File Datasource warning messages

Commencez par reproduire le flux de CID répété décrit autour de IpfsMetadataTemplate.create(cid) et du handler handleIpfsContent. Examinez comment la création répétée de sources de données de fichiers IPFS produit l’avertissement concernant le runtime host, puis vérifiez si cet avertissement est sans conséquence et si la création répétée peut être évitée sans modifier le comportement des relations entre entités.

Hi,

I have deployed a subgraph in Subgraph studio.

I'm testing a IPFS File Datasource to gather off-chain metadata info into a chain based handler.

The entity of the off-chain data is defined as:

type IpfsMetadata @entity {
  id: Bytes!
  metaData: String!
}

The event driven entity is linked this way

type AssetTransfer @entity {
  id: Bytes!
  tokenId: BigInt!
  cid: String!
  metaData: IpfsMetadata 
}

In mappings file, the following event handler set the relationship:

export function handleAssetTransfer(event: AssetTransferEvent): void {

  let entity = new AsssetTransfer(idBytes);

  const cid = event.params.cid;

  entity.metaData = Bytes.fromUTF8(cid);

  IpfsMetadataTemplate.create(cid);

               .....

}

I have the following content handler:

export function handleIpfsContent(content: Bytes): void {

  let cid = dataSource.stringParam();
  let ipfs = new IpfsMetadata(Bytes.fromUTF8(cid));
  ipfs.metaData = content.toString();
  ipfs.save();
}

Currently, cid are always the same for every indexed event (it's a normal use case), so the following warning is shown through the dashboard after the first IpfsMetadata entity is created:

"no runtime host created, there is already a runtime host instantiated for this data source, address: xxxxxxx, name: IpfsMetadata, runner_index: 1246"

When I query the index to check the AssetTransfer entities, all of them are successfully linked to the unique IpfsMetadata entity, so everything seems to work fine.

However, I don't like the warning log at every new indexed event when cid parameter is repeated.

As entities associated with File Data Sources cannot be accessed by chain-based handlers, there is no way to check whether the IpfsMetada entity does exist to prevent creating a new file datasource template.

Shoud I be aware of the logged message?
Is there any other thing I can do to prevent the warning log?

Best regards