Fetchers are helpers which provide high level apis to simplify the access to Cardano node. A fetcher uses more than one agent to implement a specific use case. All fetchers except "LocalTxSubmissionClient" mostly reads data from the node.
List of available fetchers :
| Fetcher | Description | Agents used |
|---|---|---|
| BlockFetcher | Fetch blocks from point 1 to point 2 (Node to Node) | HandshakeAgent, BlockfetchAgent |
| N2NChainSyncFetcher | Fetch blocks from the current tip or from a wellknown point (Node to Node) | HandshakeAgent, ChainsyncAgent, BlockfetchAgent |
| N2CChainSyncFetcher | Fetch blocks from the current tip or from a wellknown point (Node to Client) | HandshakeAgent, LocalChainSyncAgent |
| TipFinder | Find tip of the remote Cardano node (Node to Node) | HandshakeAgent, ChainsyncAgent |
| LocalTipFinder | Find tip of the local Cardano node (Node to Client) | HandshakeAgent, LocalChainSyncAgent |
| LocalStateQueryClient | Query local ledger state (Node to Client) | HandshakeAgent, LocalStateQueryAgent |
| LocalTxSubmissionClient | Submit transactions to a local Cardano node (Node to Client) | HandshakeAgent, LocalTxSubmissionAgent |