add ocean.assets.transferOwnership()

src/keeper/contracts/DIDRegistry.ts

@@ -1,3 +1,4 @@
+import { TransactionReceipt } from 'web3-core'
 import ContractBase from './ContractBase'
 import { zeroX, didPrefixed, didZeroX } from '../../utils'
 import { InstantiableConfig } from '../../Instantiable.abstract'
@@ -60,4 +61,8 @@ export default class DIDRegistry extends ContractBase {
     public async getPermission(did: string, grantee: string): Promise<boolean> {
         return this.call('getPermission', [didZeroX(did), zeroX(grantee)])
     }
+
+    public async transferDIDOwnership(did: string, owner: string, newOwner: string): Promise<TransactionReceipt> {
+        return this.send('transferDIDOwnership', owner, [zeroX(did), zeroX(newOwner)])
+    }
 }

src/ocean/OceanAssets.ts

@@ -1,3 +1,4 @@
+import { TransactionReceipt } from 'web3-core'
 import { SearchQuery } from '../aquarius/Aquarius'
 import { DDO } from '../ddo/DDO'
 import { MetaData } from '../ddo/MetaData'
@@ -355,6 +356,17 @@ export class OceanAssets extends Instantiable {
         return this.ocean.keeper.didRegistry.getAttributesByOwner(owner)
     }
 
+    /**
+     * Transfer ownership of an asset.
+     * @param  {string} did Asset DID.
+     * @param  {string} owner Ethereum address of the current owner of the DID.
+     * @param  {string} newOwner Ethereum address of the new owner of the DID.
+     * @return {Promise<TransactionReceipt>} Returns Web3 transaction receipt.
+     */
+    public async transferOwnership(did: string, owner: string, newOwner: string): Promise<TransactionReceipt> {
+        return this.ocean.keeper.didRegistry.transferDIDOwnership(did, owner, newOwner)
+    }
+
     /**
      * Returns the assets of a consumer.
      * @param  {string} consumer Consumer address.

test/keeper/DIDRegistry.test.ts

@@ -13,7 +13,7 @@ describe('DIDRegistry', () => {
     before(async () => {
         await TestContractHandler.prepareContracts()
         ocean = await Ocean.getInstance(config)
-        didRegistry = ocean.keeper.didRegistry
+        ;({ didRegistry } = ocean.keeper)
     })
 
     describe('#registerAttribute()', () => {
@@ -67,4 +67,22 @@ describe('DIDRegistry', () => {
             assert.equal(owner, `0x${'0'.repeat(40)}`)
         })
     })
+
+    describe('#transferDIDOwnership()', () => {
+        it('should be able to transfer ownership', async () => {
+            // create and register DID
+            const ownerAccount: Account = (await ocean.accounts.list())[0]
+            const did = generateId()
+            const data = 'my nice provider, is nice'
+            await didRegistry.registerAttribute(did, '0123456789abcdef', [], data, ownerAccount.getId())
+
+            // transfer
+            const newOwnerAccount: Account = (await ocean.accounts.list())[1]
+            await didRegistry.transferDIDOwnership(did, ownerAccount.getId(), newOwnerAccount.getId())
+
+            // check
+            const newOwner = await didRegistry.getDIDOwner(did)
+            assert.equal(newOwner, newOwnerAccount.getId(), `Got ${newOwner} but expected ${newOwnerAccount.getId()}`)
+        })
+    })
 })