add startOrder

src/datatokens/Datatokens.ts

@@ -5,7 +5,7 @@ import defaultFactoryABI from '@oceanprotocol/contracts/artifacts/DTFactory.json
 import defaultDatatokensABI from '@oceanprotocol/contracts/artifacts/DataTokenTemplate.json'
 
 import wordListDefault from '../data/words.json'
-
+import { TransactionReceipt } from 'web3-core'
 /**
  * Provides a interface to DataTokens
  */
@@ -350,4 +350,71 @@ export class DataTokens {
   public fromWei(amount: string): string {
     return this.web3.utils.fromWei(amount)
   }
+
+  /** Calculate total fee
+   * @param {String} dataTokenAddress
+   * @param {String} amount
+   * @param {String} mpFeePercentage
+   * @param {String} address
+   * @return {Promise<string>} string
+   */
+  public async calculateTotalFee(
+    dataTokenAddress: string,
+    amount: string,
+    mpFeePercentage: string,
+    address: string
+  ): Promise<string> {
+    const datatoken = new this.web3.eth.Contract(this.datatokensABI, dataTokenAddress, {
+      from: address
+    })
+    const totalFee = await datatoken.methods
+      .calculateTotalFee(
+        this.web3.utils.toWei(amount),
+        this.web3.utils.toWei(mpFeePercentage)
+      )
+      .call()
+    return this.web3.utils.fromWei(totalFee)
+  }
+
+  /** Start Order
+   * @param {String} dataTokenAddress
+   * @param {String} providerAddress
+   * @param {String} amount
+   * @param {String} did
+   * @param {Number} serviceId
+   * @param {String} mpFeeAddress
+   * @param {String} mpFeePercentage
+   * @param {String} address
+   * @return {Promise<string>} string
+   */
+  public async startOrder(
+    dataTokenAddress: string,
+    providerAddress: string,
+    amount: string,
+    did: string,
+    serviceId: number,
+    mpFeeAddress: string,
+    mpFeePercentage: string,
+    address: string
+  ): Promise<TransactionReceipt> {
+    const datatoken = new this.web3.eth.Contract(this.datatokensABI, dataTokenAddress, {
+      from: address
+    })
+    try {
+      const trxReceipt = await datatoken.methods
+        .startOrder(
+          providerAddress,
+          this.web3.utils.toWei(amount),
+          String(did),
+          String(serviceId),
+          mpFeeAddress,
+          this.web3.utils.toWei(mpFeePercentage)
+        )
+        .send({ from: address })
+      return trxReceipt
+    } catch (e) {
+      console.error(e)
+      return null
+    }
+  }
 }

src/ocean/Assets.ts

@@ -11,9 +11,11 @@ import {
 import { EditableMetadata } from '../ddo/interfaces/EditableMetadata'
 import Account from './Account'
 import DID from './DID'
-import { SubscribablePromise } from '../utils'
+import { SubscribablePromise, didZeroX } from '../utils'
 import { Instantiable, InstantiableConfig } from '../Instantiable.abstract'
 import { WebServiceConnector } from './utils/WebServiceConnector'
+import { DataTokens } from '../lib'
+import BigNumber from 'bignumber.js'
 
 export enum CreateProgressStep {
   CreatingDataToken,
@@ -396,11 +398,65 @@ export class Assets extends Instantiable {
     }
   }
 
+  /**
+   * Initialize a service
+   * Can be used to compute totalCost for ordering a service
+   * @param {String} did
+   * @param {String} serviceType
+   * @param {String} consumerAddress
+   * @param {Number} serviceIndex
+   * @param {String} mpFeePercent  will be converted to Wei
+   * @param {String} mpAddress mp fee collector address
+   * @return {Promise<any>} Order details
+   */
+  public async initialize(
+    did: string,
+    serviceType: string,
+    consumerAddress: string,
+    serviceIndex = -1,
+    mpFeePercent?: string
+  ): Promise<any> {
+    const res = await this.ocean.provider.initialize(
+      did,
+      serviceIndex,
+      serviceType,
+      consumerAddress
+    )
+    if (res === null) return null
+    const providerData = JSON.parse(res)
+    const { datatokens } = this.ocean
+    const dtCost = new BigNumber(this.web3.utils.fromWei(String(providerData.numTokens)))
+    const totalFee = new BigNumber(
+      await datatokens.calculateTotalFee(
+        providerData.dataToken,
+        this.web3.utils.fromWei(String(providerData.numTokens)),
+        mpFeePercent,
+        consumerAddress
+      )
+    )
+    providerData.totalFee = totalFee.toString()
+    providerData.dtCost = dtCost.toString()
+    providerData.totalCost = dtCost.plus(totalFee).toString()
+    return providerData
+  }
+
+  /**
+   * Orders & pays for a service
+   * @param {String} did
+   * @param {String} serviceType
+   * @param {String} consumerAddress
+   * @param {Number} serviceIndex
+   * @param {String} mpFeePercent  will be converted to Wei
+   * @param {String} mpAddress mp fee collector address
+   * @return {Promise<String>} transactionHash of the payment
+   */
   public async order(
     did: string,
     serviceType: string,
     consumerAddress: string,
-    serviceIndex = -1
+    serviceIndex = -1,
+    mpFeePercent?: string,
+    mpAddress?: string
   ): Promise<string> {
     if (serviceIndex === -1) {
       const service = await this.getServiceByType(did, serviceType)
@@ -409,12 +465,53 @@ export class Assets extends Instantiable {
       const service = await this.getServiceByIndex(did, serviceIndex)
       serviceType = service.type
     }
-    return await this.ocean.provider.initialize(
+    if (!mpFeePercent) mpFeePercent = '0'
+    if (!mpAddress) mpAddress = '0x000000000000000000000000000000000000dEaD'
+    const { datatokens } = this.ocean
+    try {
+      const providerData = await this.initialize(
         did,
-      serviceIndex,
         serviceType,
+        consumerAddress,
+        serviceIndex,
+        mpFeePercent
+      )
+      if (!providerData) return null
+      const balance = new BigNumber(
+        await datatokens.balance(providerData.dataToken, consumerAddress)
+      )
+      const totalCost = new BigNumber(providerData.totalCost)
+      if (balance.isLessThanOrEqualTo(totalCost)) {
+        console.error('Not enough funds')
+
+        return null
+      }
+      console.log(
+        'Balance:' +
+          balance.toString() +
+          '| dtCost:' +
+          providerData.dtCost.toString() +
+          '|Fees:' +
+          providerData.totalFee.toString() +
+          '|Total:' +
+          providerData.totalCost.toString()
+      )
+      const txid = await datatokens.startOrder(
+        providerData.dataToken,
+        providerData.to,
+        String(providerData.numTokens),
+        didZeroX(did),
+        serviceIndex,
+        mpAddress,
+        mpFeePercent,
         consumerAddress
       )
+      if (txid) return txid.transactionHash
+      else return null
+    } catch (e) {
+      console.error(e)
+      return null
+    }
   }
 
   // marketplace flow

src/ocean/Compute.ts

@@ -87,7 +87,7 @@ export class Compute extends Instantiable {
     algorithmDataToken?: string
   ): Promise<ComputeJob> {
     output = this.checkOutput(consumerAccount, output)
-    if (did) {
+    if (did && txId) {
       const computeJobsList = await this.ocean.provider.compute(
         'post',
         did,
@@ -349,7 +349,9 @@ export class Compute extends Instantiable {
     datasetDid: string,
     serviceIndex: number,
     algorithmDid?: string,
-    algorithmMeta?: MetadataAlgorithm
+    algorithmMeta?: MetadataAlgorithm,
+    mpFeePercent?: string,
+    mpAddress?: string
   ): SubscribablePromise<OrderProgressStep, string> {
     return new SubscribablePromise(async (observer) => {
       const ddo: DDO = await this.ocean.assets.resolve(datasetDid)
@@ -380,7 +382,10 @@ export class Compute extends Instantiable {
       const order = await this.ocean.assets.order(
         datasetDid,
         service.type,
-        consumerAccount
+        consumerAccount,
+        -1,
+        mpFeePercent,
+        mpAddress
       )
       return order
     })

test/integration/ComputeFlow.test.ts

@@ -270,16 +270,9 @@ describe('Compute flow', () => {
       algorithmMeta
     )
     assert(order != null)
-    const computeOrder = JSON.parse(order)
-    const tx = await datatoken.transferWei(
-      computeOrder.dataToken,
-      computeOrder.to,
-      String(computeOrder.numTokens),
-      computeOrder.from
-    )
     const response = await ocean.compute.start(
       ddo.id,
-      tx.transactionHash,
+      order,
       tokenAddress,
       bob,
       undefined,
@@ -293,6 +286,7 @@ describe('Compute flow', () => {
   })
 
   it('Bob should get status of a compute job', async () => {
+    assert(jobId != null)
     const response = await ocean.compute.status(bob, ddo.id, jobId)
     assert(response[0].jobId === jobId)
   })
@@ -302,6 +296,7 @@ describe('Compute flow', () => {
     assert(response.length > 0)
   })
   it('Bob should stop compute job', async () => {
+    assert(jobId != null)
     await ocean.compute.stop(bob, ddo.id, jobId)
     const response = await ocean.compute.status(bob, ddo.id, jobId)
     assert(response[0].stopreq === 1)
@@ -338,13 +333,7 @@ describe('Compute flow', () => {
       serviceAlgo.type,
       bob.getId()
     )
-    const algoOrder = JSON.parse(orderalgo)
+    assert(orderalgo != null)
-    const algoTx = await datatoken.transferWei(
-      algoOrder.dataToken,
-      algoOrder.to,
-      String(algoOrder.numTokens),
-      algoOrder.from
-    )
     const order = await ocean.compute.order(
       bob.getId(),
       ddo.id,
@@ -353,16 +342,9 @@ describe('Compute flow', () => {
       undefined
     )
     assert(order != null)
-    const computeOrder = JSON.parse(order)
-    const tx = await datatoken.transferWei(
-      computeOrder.dataToken,
-      computeOrder.to,
-      String(computeOrder.numTokens),
-      computeOrder.from
-    )
     const response = await ocean.compute.start(
       ddo.id,
-      tx.transactionHash,
+      order,
       tokenAddress,
       bob,
       algorithmAsset.id,
@@ -370,7 +352,7 @@ describe('Compute flow', () => {
       output,
       computeService.index,
       computeService.type,
-      algoTx.transactionHash,
+      orderalgo,
       algorithmAsset.dataToken
     )
     jobId = response.jobId

test/integration/Marketplaceflow.test.ts

@@ -159,21 +159,11 @@ describe('Marketplace flow', () => {
   })
 
   it('Bob consumes asset 1', async () => {
-    await ocean.assets
+    await ocean.assets.order(ddo.id, accessService.type, bob.getId()).then(async (tx) => {
-      .order(ddo.id, accessService.type, bob.getId())
+      assert(tx != null)
-      .then(async (res: any) => {
-        res = JSON.parse(res)
-        return await datatoken.transferWei(
-          res.dataToken,
-          res.to,
-          String(res.numTokens),
-          res.from
-        )
-      })
-      .then(async (tx) => {
       await ocean.assets.download(
         ddo.id,
-          tx.transactionHash,
+        tx,
         tokenAddress,
         bob,
         './node_modules/my-datasets'