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Provider REST API

Ocean Provider Endpoints Specification

This document specifies the endpoints for Ocean Provider to be implemented by the core developers.

nonce endpoint

GET /api/services/nonce

Parameters
userAddress: String object containing a user's ethereum address
Returns: Json object containing the last-used nonce value. The nonce endpoint is just informative, use the current UTC timestamp as a nonce, where required in other endpoints.
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 ...'

File info endpoint

POST /api/services/fileinfo

Retrieves Content-Type and Content-Length from the given URL or asset.
Parameters
For published assets:
{
did: String, DID of the dataset
serviceId: String, ID of the service
}
For file objects,see https://docs.oceanprotocol.com/core-concepts/did-ddo#files
If checksum is requests, file size should be lower < MAX_CHECKSUM_LENGTH (see Provider ENVs) If file is larger, checksum WILL NOT be computed.
Returns: Json document file info object
Example:
POST /api/services/fileinfo
payload:
{
"did":"0x1111",
"serviceId": "0",
}
Response:
[
{
"contentLength":"1161",
"contentType":"application/json",
"index":0,
"valid": true
},...
]

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. Retrieves the attached asset files.
Example:
GET /api/services/download
payload:
{
"documentId":"0x1111",
"serviceId": 0,
"fileIndex": 0,
"datatoken": "",
"consumerAddress":"0x990922334",
"signature":"0x00110011",
"transferTxId": "0xa09fc23421345532e34829"
Response:
{
"": ""
}

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)
status
Description
1
Warming up
10
Job started
20
Configuring volumes
30
Provisioning success
31
Data provisioning failed
32
Algorithm provisioning failed
40
Running algorith
50
Filtering results
60
Publishing results
70
Job 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": ""
}
]

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"}'

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/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 environment",
"diskGB":2,
"gpuType":"AMD RX570",
"id":"ocean-compute",
"maxJobs":10,
"nCPU":2,
"nGPU":0,
"priceMin":2.3,
"ramGB":1
},
...
]
Last modified 3d ago