Add blob download endpoint (getBlobs) #286
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| get: | ||
| operationId: getBlobs | ||
| summary: Get blobs | ||
| description: | | ||
| Retrieves blobs for a given block id. | ||
| Depending on `Accept` header it can be returned either as json or as bytes serialized by SSZ. | ||
| It is recommended that blob retrieval for finalized blocks should by done by slot else the underlying index might not be available. | ||
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| tags: | ||
| - Beacon | ||
| parameters: | ||
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| - name: block_id | ||
| in: path | ||
| required: true | ||
| $ref: '../../../beacon-node-oapi.yaml#/components/parameters/BlockId' | ||
| responses: | ||
| "200": | ||
| description: "Successful response" | ||
| content: | ||
| application/json: | ||
| schema: | ||
| title: GetBlobsResponse | ||
| type: object | ||
| properties: | ||
| data: | ||
| type: array | ||
| items: | ||
| oneOf: | ||
| - $ref: "../../../beacon-node-oapi.yaml#/components/schemas/Deneb.BlobSidecar" | ||
| minItems: 0 | ||
| maxItems: 4 | ||
|
There was a problem hiding this comment. This will likely have to change in line with ethereum/consensus-specs#3338 There was a problem hiding this comment. Looking at the latest discussions & changes in the PR, it looks like we may not need to change this value here. A new |
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| application/octet-stream: | ||
| schema: | ||
| description: "SSZ serialized block bytes. Use Accept header to choose this response type" | ||
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There was a problem hiding this comment. what's this returning? eg. if i set There was a problem hiding this comment. Thanks for raising this, great point - I think it would be good to be consistent with other endpoints that accepts array type query params (e.g. `getStateValidators), i.e. not guaranteeing order, unless there are specific reasons for guaranteeing the order when indices are specified? From
There was a problem hiding this comment. i haven't looked at the SSZ, hopefully its easy to get the blob id from the object.. assuming thats fine... There was a problem hiding this comment. just wondering if the ordering is important, so if i query some weird order, do i need to process them in some specific order, and is that possible based on the return data if we're not returning in the same order... There was a problem hiding this comment. I'm not sure if the ordering is important tbh, but we do have |
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| "400": | ||
| description: "The block ID supplied could not be parsed" | ||
| content: | ||
| application/json: | ||
| schema: | ||
| $ref: "../../../beacon-node-oapi.yaml#/components/schemas/ErrorMessage" | ||
| example: | ||
| code: 400 | ||
| message: "Invalid block ID: current" | ||
| "404": | ||
| description: "Blob sidecar not found" | ||
| content: | ||
| application/json: | ||
| schema: | ||
| $ref: "../../../beacon-node-oapi.yaml#/components/schemas/ErrorMessage" | ||
| example: | ||
| code: 404 | ||
| message: "Blob sidecar not found" | ||
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| "500": | ||
| $ref: "../../../beacon-node-oapi.yaml#/components/responses/InternalError" | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| Deneb: | ||
| BlobSidecar: | ||
| type: object | ||
| description: "The `BlobSidecar` object from the Deneb CL spec." | ||
| properties: | ||
| block_root: | ||
| $ref: "../primitive.yaml#/Root" | ||
| index: | ||
| $ref: "../primitive.yaml#/Uint64" | ||
| slot: | ||
| $ref: "../primitive.yaml#/Uint64" | ||
| block_parent_root: | ||
| $ref: "../primitive.yaml#/Root" | ||
| proposer_index: | ||
| $ref: "../primitive.yaml#/Uint64" | ||
| blob: | ||
| $ref: "../primitive.yaml#/Blob" | ||
| kzg_commitment: | ||
| $ref: '../primitive.yaml#/KZGCommitment' | ||
| kzg_proof: | ||
| $ref: '../primitive.yaml#/KZGProof' |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| Deneb: | ||
| BeaconBlockBodyCommon: | ||
| # An abstract object to collect the common fields between the BeaconBlockBody and the BlindedBeaconBlockBody objects | ||
| type: object | ||
| description: "The [`BeaconBlockBody`](https://github.com/ethereum/consensus-specs/blob/master/specs/deneb/beacon-chain.md#beaconblockbody) object from the CL Deneb spec." | ||
| properties: | ||
| randao_reveal: | ||
| allOf: | ||
| - $ref: '../primitive.yaml#/Signature' | ||
| - description: "The RanDAO reveal value provided by the validator." | ||
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| eth1_data: | ||
| $ref: '../eth1.yaml#/Eth1Data' | ||
| graffiti: | ||
| $ref: '../primitive.yaml#/Graffiti' | ||
| proposer_slashings: | ||
| type: array | ||
| items: | ||
| $ref: '../proposer_slashing.yaml#/ProposerSlashing' | ||
| attester_slashings: | ||
| type: array | ||
| items: | ||
| $ref: '../attester_slashing.yaml#/AttesterSlashing' | ||
| attestations: | ||
| type: array | ||
| items: | ||
| $ref: '../attestation.yaml#/Attestation' | ||
| deposits: | ||
| type: array | ||
| items: | ||
| $ref: '../deposit.yaml#/Deposit' | ||
| voluntary_exits: | ||
| type: array | ||
| items: | ||
| $ref: '../voluntary_exit.yaml#/SignedVoluntaryExit' | ||
| sync_aggregate: | ||
| $ref: '../altair/sync_aggregate.yaml#/Altair/SyncAggregate' | ||
| bls_to_execution_changes: | ||
| type: array | ||
| items: | ||
| $ref: '../bls_to_execution_change.yaml#/SignedBLSToExecutionChange' | ||
| blob_kzg_commitments: | ||
| type: array | ||
| items: | ||
| $ref: '../primitive.yaml#/KZGCommitment' | ||
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| BeaconBlockBody: | ||
| allOf: | ||
| - $ref: '#/Deneb/BeaconBlockBodyCommon' | ||
| - type: object | ||
| properties: | ||
| execution_payload: | ||
| $ref: './execution_payload.yaml#/Deneb/ExecutionPayload' | ||
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| BeaconBlock: | ||
| description: "The [`BeaconBlock`](https://github.com/ethereum/consensus-specs/blob/master/specs/Deneb/beacon-chain.md#beaconblock) object from the CL Deneb spec." | ||
| allOf: | ||
| - $ref: '../altair/block.yaml#/Altair/BeaconBlockCommon' | ||
| - type: object | ||
| properties: | ||
| body: | ||
| $ref: '#/Deneb/BeaconBlockBody' | ||
|
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| SignedBeaconBlock: | ||
| type: object | ||
| description: "The [`SignedBeaconBlock`](https://github.com/ethereum/consensus-specs/blob/master/specs/deneb/beacon-chain.md#signedbeaconblock) object envelope from the CL Deneb spec." | ||
| properties: | ||
| message: | ||
| $ref: "#/Deneb/BeaconBlock" | ||
| signature: | ||
| $ref: "../primitive.yaml#/Signature" | ||
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| BlindedBeaconBlockBody: | ||
| description: "A variant of the [`BeaconBlockBody`](https://github.com/ethereum/consensus-specs/blob/master/specs/deneb/beacon-chain.md#beaconblockbody) object from the CL Deneb spec, which contains a transactions root rather than a full transactions list." | ||
| allOf: | ||
| - $ref: '#/Deneb/BeaconBlockBodyCommon' | ||
| - type: object | ||
| properties: | ||
| execution_payload_header: | ||
| $ref: './execution_payload.yaml#/Deneb/ExecutionPayloadHeader' | ||
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| BlindedBeaconBlock: | ||
| description: "A variant of the the [`BeaconBlock`](https://github.com/ethereum/consensus-specs/blob/master/specs/deneb/beacon-chain.md#beaconblock) object from the CL Deneb spec, which contains a `BlindedBeaconBlockBody` rather than a `BeaconBlockBody`." | ||
| allOf: | ||
| - $ref: '../altair/block.yaml#/Altair/BeaconBlockCommon' | ||
| - type: object | ||
| properties: | ||
| body: | ||
| $ref: '#/Deneb/BlindedBeaconBlockBody' | ||
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| SignedBlindedBeaconBlock: | ||
| type: object | ||
| description: "A variant of the the the [`SignedBeaconBlock`](https://github.com/ethereum/consensus-specs/blob/master/specs/deneb/beacon-chain.md#signedbeaconblock) object envelope from the CL Deneb spec, which contains a `BlindedBeaconBlock` rather than a `BeaconBlock`." | ||
| properties: | ||
| message: | ||
| $ref: "#/Deneb/BlindedBeaconBlock" | ||
| signature: | ||
| $ref: "../primitive.yaml#/Signature" | ||
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and similar changes to the query path?
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Yeah I had that originally but dropped it. There was a suggestion a while ago to remove it, and I think it's a fair enough reason, although I also think
blob_sidecarsmake sense too given it's the structure we return and consistent with the spec name. I don't have a strong opinion here though.#286 (comment)
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i think in previous version the comment made sense as blobs were sort of different from the sidecars aggregate object, but not blobSideCar is an independent object, i means its just not taxing on the mind to understand in a glance what they return.
but yes i wont strongly push it either but weakly in favor of change now
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Thanks @g11tech, I think that sounds reasonable to me, so:
/eth/v1/beacon/blob_sidecars/{block_id}Any other thoughts on this @mcdee @rolfyone?
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I'm impartial on this one :)
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Thanks for the inputs, I'll wait another few days before updating this to see if anyone else have an opinion on this.
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Updated to
blob_sidecarsin a6d1c36