Ocean Provider Endpoints Specification

This document specifies the endpoints for Ocean Provider to be implemented by the core developers. The final implementation and its documentation happens in Swagger inline code comments and the latest implemented API documentation can be accessed via:

nonce endpoint

GET /api/services/nonce

Parameters

    userAddress: String object containing a user's ethereum address

Returns: Json object containing the nonce value.

Example:

POST /api/services/nonce?userAddress=0x990922334

Response:

{
  "nonce": 23
}

Encrypt endpoint

GET /api/services/encrypt

Body: binary application/octet-stream

Returns: Bytes string containing the encrypted document.

Example:

POST /api/services/encrypt
body: b'\xfd7zXZ\x00\x00\x04\xe6\xd6\xb4F\ ... \x00\x04YZ'

Response:

b'0x04b2bfab1f4e...7ed0573'

Decrypt endpoint

POST /api/services/decrypt

Parameters

    decrypterAddress: String object containing the address of the decrypter (required)
    chainId: the chain id of the network the document is on (required)
    transactionId: the transaction id of the encrypted document (optional)
    dataNftAddress: the address of the data nft (optional)
    encryptedDocument: the encrypted document (optional)
    flags: the flags of the encrypted document (optional)
    documentHash: the hash of the encrypted document (optional)
    nonce: the nonce of the encrypted document (required)
    signature: the signature of the encrypted document (required)

Returns: Bytes string containing the decrypted document.

Example:

POST /api/services/decrypt
payload: {
    'decrypterAddress':'0xA78deb2Fa79463945C247991075E2a0e98Ba7A09'
    'chainId':8996
    'dataNftAddress':'0xBD558814eE914800EbfeF4a1cbE196F5161823d9'
    'encryptedDocument':'0xfd377a585a0...f07afef7dc214'
    'flags': 1
    'documentHash':'0x0cb38a7bba49758a86f8556642aff655d00e41da28240d5ea0f596b74094d91f'
    'nonce':'1644315615.24195'
    'signature':'0xd6f27047853203824ab9e5acef87d0a501a64aee93f33a83b6f91cbe8fb4489824defceaccde91273f41290cb2a0c15572368e8bea0b456c7a653659cad7de311b'
}

Response:

b'{"@context": ["https://w3id.org/did/v1"], "id": "did:op:0c184915b07b44c888d468be85a9b28253e80070e5294b1aaed81c ...'

Initial service request endpoint

GET /api/services/initialize

Parameters

    documentId: String object containing document id (e.g. a DID)
    serviceId: String, ID of the service the datatoken is attached to
    consumerAddress: String object containing consumer's address
    environment: String representing a compute environment offered by the provider
    validUntil: Integer, date of validity of the service (optional)
    fileIndex: Integer, the index of the file from the files list in the dataset. If set, provider will validate the file access. (optional)

Returns: Json document with a quote for amount of tokens to transfer to the provider account.

Example:

GET /api/services/initialize
payload:
{
    "documentId":"0x1111",
    "serviceId": 0,
    "consumerAddress":"0x990922334",
}
payload (with optional parameters):
{
    "documentId":"0x1111",
    "serviceId": 0,
    "consumerAddress":"0x990922334",
    "validUntil": 1578004800,
    "fileIndex": 1
}

Response:

{
    "datatoken": "0x21fa3ea32892091...",
    "nonce": 23,
    "providerFee": {
        "providerFeeAddress": "0xabc123...",
        "providerFeeToken": "0xabc123...",
        "providerFeeAmount": "200",
        "providerData": "0xabc123...",
        "v": 27,
        "r": "0xabc123...",
        "s": "0xabc123...",
        "validUntil": 123456,
    }
    "computeAddress": "0x8123jdf8sdsa..."
}

Download endpoint

GET /api/services/download

Parameters

    documentId: String object containing document id (e.g. a DID)
    serviceId: String, representing the list of `file` objects that describe each file in the dataset
    transferTxId: Hex string -- the id of on-chain transaction for approval of datatokens transfer
    given to the provider's account
    fileIndex: integer, the index of the file from the files list in the dataset
    nonce: Nonce
    consumerAddress: String object containing consumer's address
    signature: String object containg user signature (signed message)

Returns: File stream

Example:

POST /api/services/download
payload:
{
    "documentId":"0x1111",
    "serviceId": 0,
    "fileIndex": 0,
    "datatoken": "",
    "consumerAddress":"0x990922334",
    "signature":"0x00110011",
    "transferTxId": "0xa09fc23421345532e34829"

Response:

{
  "": ""
}

File info endpoint

POST /api/services/fileinfo

Retrieves Content-Type and Content-Length from the given URL or asset.

Parameters

    type: String, either "url" or "asset"
    did: String, DID of the dataset
    hash: String, hash of the file
    url: String, URL of the file
    serviceId: String, ID of the service the datatoken is attached to

Returns: Json document file info object

Example:

POST /api/services/fileinfo
payload:
{
    "url": "https://s3.amazonaws.com/testfiles.oceanprotocol.com/info.0.json",
    "type": "url",
    "method": "GET",
}

Response:

[
    {
        "contentLength":"1161"
        "contentType":"application/json"
        "index":0
        "valid": true
    },...
]

Compute endpoints

All compute endpoints respond with an Array of status objects, each object describing a compute job info.

Each status object will contain:

    owner:The owner of this compute job
    documentId: String object containing document id (e.g. a DID)
    jobId: String object containing workflowId
    dateCreated: Unix timestamp of job creation
    dateFinished: Unix timestamp when job finished (null if job not finished)
    status:  Int, see below for list
    statusText: String, see below
    algorithmLogUrl: URL to get the algo log (for user)
    resultsUrls: Array of URLs for algo outputs
    resultsDid: If published, the DID

Status description (statusText): (see Operator-Service for full status list)

statusDescription
1Warming up
10Job started
20Configuring volumes
30Provisioning success
31Data provisioning failed
32Algorithm provisioning failed
40Running algorith
50Filtering results
60Publishing results
70Job completed

Create new job or restart an existing stopped job

POST /api/services/compute

Start a new job

Parameters

    signature: String object containg user signature (signed message) (required)
    consumerAddress: String object containing consumer's ethereum address (required)
    nonce: Integer, Nonce (required)
    environment: String representing a compute environment offered by the provider 
    dataset: Json object containing dataset information
        dataset.documentId: String, object containing document id (e.g. a DID) (required)
        dataset.serviceId: String, ID of the service the datatoken is attached to (required)
        dataset.transferTxId: Hex string, the id of on-chain transaction for approval of datatokens transfer
            given to the provider's account (required)
        dataset.userdata: Json, user-defined parameters passed to the dataset service (optional)
    algorithm: Json object, containing algorithm information
        algorithm.documentId: Hex string, the did of the algorithm to be executed (optional)
        algorithm.meta: Json object, defines the algorithm attributes and url or raw code (optional)
        algorithm.serviceId: String, ID of the service to use to process the algorithm (optional)
        algorithm.transferTxId: Hex string, the id of on-chain transaction of the order to use the algorithm (optional)
        algorithm.userdata: Json, user-defined parameters passed to the algorithm running service (optional)
        algorithm.algocustomdata: Json object, algorithm custom parameters (optional)
    additionalDatasets: Json object containing a list of dataset objects (optional)

    One of `algorithm.documentId` or `algorithm.meta` is required, `algorithm.meta` takes precedence

Returns: Array of status objects as described above, in this case the array will have only one object

Example:

POST /api/compute
payload:
{
    "signature": "0x00110011",
    "consumerAddress": "0x123abc",
    "nonce": 1,
    "environment": "env",
    "dataset": {
        "documentId": "did:op:2222...",
        "serviceId": "compute",
        "transferTxId": "0x0232123..."
    }
}

Response:

[
    {
      "jobId": "0x1111:001",
      "status": 1,
      "statusText": "Job started",
      ...
    }
]

Status and Result

GET /api/services/compute

Get all jobs and corresponding stats

Parameters

    signature: String object containg user signature (signed message)
    documentId: String object containing document did  (optional)
    jobId: String object containing workflowID (optional)
    consumerAddress: String object containing consumer's address (optional)

    At least one parameter from documentId, jobId and owner is required (can be any of them)

Returns

Array of status objects as described above

Example:

GET /api/services/compute?signature=0x00110011&documentId=did:op:1111&jobId=012023

Response:

[
      {
        "owner":"0x1111",
        "documentId":"did:op:2222",
        "jobId":"3333",
        "dateCreated":"2020-10-01T01:00:00Z",
        "dateFinished":"2020-10-01T01:00:00Z",
        "status":5,
        "statusText":"Job finished",
        "algorithmLogUrl":"http://example.net/logs/algo.log",
        "resultsUrls":[
            "http://example.net/logs/output/0",
            "http://example.net/logs/output/1"
         ],
         "resultsDid":"did:op:87bdaabb33354d2eb014af5091c604fb4b0f67dc6cca4d18a96547bffdc27bcf"
       },
       {
        "owner":"0x1111",
        "documentId":"did:op:2222",
        "jobId":"3334",
        "dateCreated":"2020-10-01T01:00:00Z",
        "dateFinished":"2020-10-01T01:00:00Z",
        "status":5,
        "statusText":"Job finished",
        "algorithmLogUrl":"http://example.net/logs2/algo.log",
        "resultsUrls":[
            "http://example.net/logs2/output/0",
            "http://example.net/logs2/output/1"
         ],
         "resultsDid":""
       }
 ]

Stop

PUT /api/services/compute

Stop a running compute job.

Parameters

    signature: String object containg user signature (signed message)
    documentId: String object containing document did (optional)
    jobId: String object containing workflowID (optional)
    consumerAddress: String object containing consumer's address (optional)

    At least one parameter from documentId,jobId and owner is required (can be any of them)

Returns

Array of status objects as described above

Example:

PUT /api/services/compute?signature=0x00110011&documentId=did:op:1111&jobId=012023

Response:

[
    {
      ...,
      "status": 7,
      "statusText": "Job stopped",
      ...
    }
]

Delete

DELETE /api/services/compute

Delete a compute job and all resources associated with the job. If job is running it will be stopped first.

Parameters

    signature: String object containg user signature (signed message)
    documentId: String object containing document did (optional)
    jobId: String object containing workflowId (optional)
    consumerAddress: String object containing consumer's address (optional)

    At least one parameter from documentId, jobId is required (can be any of them)
    in addition to consumerAddress and signature

Returns

Array of status objects as described above

Example:

DELETE /api/services/compute?signature=0x00110011&documentId=did:op:1111&jobId=012023

Response:

[
    {
      ...,
      "status": 8,
      "statusText": "Job deleted successfully",
      ...
    }
]

GET /api/services/computeResult

Allows download of asset data file.

Parameters

    jobId: String object containing workflowId (optional)
    index: Integer, index of the result to download (optional)
    consumerAddress: String object containing consumer's address (optional)
    nonce: Integer, Nonce (required)
    signature: String object containg user signature (signed message)

Returns: Bytes string containing the compute result.

Example:

GET /api/services/computeResult?index=0&consumerAddress=0xA78deb2Fa79463945C247991075E2a0e98Ba7A09&jobId=4d32947065bb46c8b87c1f7adfb7ed8b&nonce=1644317370

Response:

b'{"result": "0x0000000000000000000000000000000000000000000000000000000000000001"}'

GET /api/services/computeEnvironments

Allows download of asset data file.

Parameters

Returns: List of compute environments.

Example:

GET /api/services/computeEnvironments

Response:

[
    {
        "cpuType":"AMD Ryzen 7 5800X 8-Core Processor"
        "currentJobs":0
        "desc":"This is a mocked enviroment"
        "diskGB":2
        "gpuType":"AMD RX570"
        "id":"ocean-compute"
        "maxJobs":10
        "nCPU":2
        "nGPU":0
        "priceMin":2.3
        "ramGB":1
    },
    ...
]