Compute Example Readme flow (#1615)

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Co-authored-by: GitHub Actions Bot <>

.github/workflows/ci.yml

@@ -212,4 +212,4 @@ jobs:
           git config user.email "<>"
 
       - name: Create Guide & Commit if there are changes
-        run: npm run commit:guide
+        run: npm run commit:guides

CodeExamples.md

@@ -110,7 +110,7 @@ import {
   ZERO_ADDRESS,
   calculateEstimatedGas,
   sendTx
-} from '../../src'
+} from '@oceanprotocol/lib'
 import { getAddresses, getTestConfig, web3 } from '../config'
 ```
 
@@ -166,7 +166,7 @@ Next, we define the metadata that will describe our data asset. This is what we
     '@context': ['https://w3id.org/did/v1'],
     id: '',
     version: '4.1.0',
-    chainId: 4,
+    chainId: 5,
     nftAddress: '0x0',
     metadata: {
       created: '2021-12-20T14:35:20Z',

ComputeExamples.md

@@ -0,0 +1,703 @@
+# Compute-to-Data (C2D) Code Examples
+
+Here are the steps:
+
+0. [Prerequisites](#-Prerequisites)
+1. [Initialize services](#-initialize-services)
+2. [Create a new node.js project](#-create-a-new-node.js-project)
+3. [Install dependencies](#-install-dependencies)
+4. [Import dependencies and add variables and constants](#-import-dependencies-and-add-variables-and-constants)
+5. [Initialize accounts and deploy contracts](#-initialize-accounts-and-deploy-contracts)
+6. [Publish a dataset and  an algorithm](#-publish-a-dataset-data-nft-and-datatoken)
+7. [Resolve published datasets and algorithms](#-resolve-published-datasets-and-algorithms)
+8. [Send datatokens to consumer](#-send-datatokens-to-consumer)
+9. [Consumer fetches compute environment](#-consumer-starts-a-compute-job-using-a-free-c2D-environment)
+10. [Consumer starts a compute job using a free C2D environment](#-consumer-starts-a-compute-job-using-a-free-c2D-environment)
+11. [Check compute status and get download compute results url](#-check-compute-status-and-get-download-compute-results-url)
+
+Let's go through each step.
+
+## 0. Prerequisites
+Before we start it is important that you have all of the necessary prerequisites installed on your computer.
+- **A Unix based operating system (Linux or Mac)**. If you are a Windows user you can try to run linux inside a virtual machine but this is outside of the scope of this article.
+- **Git**. Instructions for installing Git can be found here: https://git-scm.com/book/en/v2/Getting-Started-Installing-Git
+- **Node.js** can be downloaded from here: https://nodejs.org/en/download/
+- **Docker** can be installed from here: https://docs.docker.com/get-docker/. Please note that Docker must run as a non-root user, you can set this up by following these instructions: https://docs.docker.com/engine/install/linux-postinstall/
+
+## 1. Initialize services
+
+Ocean.js uses off-chain services for metadata (Aquarius) and consuming datasets (Provider).
+
+We start by initializing the services. To do this, we clone the Barge repository and run it. This will run the current default versions of [Aquarius](https://github.com/oceanprotocol/aquarius), [Provider](https://github.com/oceanprotocol/provider), and [Ganache](https://github.com/trufflesuite/ganache) with [our contracts](https://github.com/oceanprotocol/contracts) deployed to it.
+
+```bash
+git clone https://github.com/oceanprotocol/barge.git
+cd barge/
+./start_ocean.sh --with-provider2 --no-dashboard --with-c2d
+```
+
+## 2. Create a new Node.js project with TypeScript
+
+Start by creating a new Node.js project. Open a new terminal and enter the following commands:
+
+```bash
+mkdir compute-quickstart
+cd compute-quickstart
+npm init
+# Answer the questions in the command line prompt
+touch compute.ts
+# On linux press CTRL + D to save
+```
+
+Next, we need to setup our TypeScript compiler options. Create a new file called `tsconfig.json` in the root of the `compute-quickstart` directory.
+
+```bash
+touch tsconfig.json
+# Copy the following json content into the file, On linux press CTRL + D to save
+```
+
+```json
+{
+  "compilerOptions": {
+    "lib": ["es6", "es7"],
+    "module": "CommonJS",
+    "target": "ES5",
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "outDir": "./dist/",
+    "declaration": true,
+    "declarationDir": "./dist/"
+  },
+  "include": [
+    "compute.ts"
+  ],
+  "exclude": [ "node_modules", "dist" ]
+}
+```
+
+Now you can compile your TypeScript project.
+If you have TypeScript installed use the following command:
+
+```bash
+tsc
+```
+
+If you don't have TypeScript installed you can install it using the command below and then compile using the above command:
+
+```bash
+npm install -g typescript
+```
+
+Or if you don't want to install TypeScript use the following command to compile your file:
+```bash
+npx tsc compute.ts
+```
+
+To run your script as we go along, compile the script then you can use the following command:
+
+```bash
+node dist/compute.js
+```
+
+## 3. Install dependencies
+
+Install dependencies running the following command in your terminal:
+
+```bash
+npm install @oceanprotocol/lib crypto-js web3 web3-utils typescript @types/node ts-node
+```
+
+## 4. Import dependencies and add variables, constants and helper methods
+
+Now open the `compute.ts` file in your text editor.
+
+### 4.1. Dependencies
+
+Start by importing all of the necessary dependencies
+
+```Typescript
+import fs from 'fs'
+import { homedir } from 'os'
+
+import { SHA256 } from 'crypto-js'
+import Web3 from 'web3'
+import { AbiItem } from 'web3-utils'
+import {
+  ProviderInstance,
+  Aquarius,
+  NftFactory,
+  Datatoken,
+  Nft,
+  ZERO_ADDRESS,
+  transfer,
+  sleep,
+  approveWei,
+  ProviderComputeInitialize,
+  ConsumeMarketFee,
+  ComputeAlgorithm,
+  ComputeAsset,
+  Config,
+  Files,
+  DDO,
+  NftCreateData,
+  DatatokenCreateParams,
+  calculateEstimatedGas,
+  sendTx,
+  configHelperNetworks,
+  ConfigHelper
+} from '@oceanprotocol/lib'
+
+```
+
+### 4.2. Constants and variables
+
+ We will need two files to publish, one as dataset and one as algorithm, so here we define the files that we intend to publish.
+```Typescript
+const DATASET_ASSET_URL: Files = {
+  datatokenAddress: '0x0',
+  nftAddress: '0x0',
+  files: [
+    {
+      type: 'url',
+      url: 'https://raw.githubusercontent.com/oceanprotocol/testdatasets/main/shs_dataset_test.txt',
+      method: 'GET'
+    }
+  ]
+}
+
+const ALGORITHM_ASSET_URL: Files = {
+  datatokenAddress: '0x0',
+  nftAddress: '0x0',
+  files: [
+    {
+      type: 'url',
+      url: 'https://raw.githubusercontent.com/oceanprotocol/testdatasets/main/shs_dataset_test.txt',
+      method: 'GET'
+    }
+  ]
+}
+```
+
+Next, we define the metadata for the dataset and algorithm that will describe our data assets. This is what we call the DDOs
+```Typescript
+const DATASET_DDO: DDO = {
+  '@context': ['https://w3id.org/did/v1'],
+  id: 'id:op:efba17455c127a885ec7830d687a8f6e64f5ba559f8506f8723c1f10f05c049c',
+  version: '4.1.0',
+  chainId: 5,
+  nftAddress: '0x0',
+  metadata: {
+    created: '2021-12-20T14:35:20Z',
+    updated: '2021-12-20T14:35:20Z',
+    type: 'dataset',
+    name: 'dataset-name',
+    description: 'Ocean protocol test dataset description',
+    author: 'oceanprotocol-team',
+    license: 'https://market.oceanprotocol.com/terms',
+    additionalInformation: {
+      termsAndConditions: true
+    }
+  },
+  services: [
+    {
+      id: 'notAnId',
+      type: 'compute',
+      files: '',
+      datatokenAddress: '0xa15024b732A8f2146423D14209eFd074e61964F3',
+      serviceEndpoint: 'https://v4.provider.goerli.oceanprotocol.com/',
+      timeout: 300,
+      compute: {
+        publisherTrustedAlgorithmPublishers: [],
+        publisherTrustedAlgorithms: [],
+        allowRawAlgorithm: true,
+        allowNetworkAccess: true
+      }
+    }
+  ]
+}
+
+const ALGORITHM_DDO: DDO = {
+  '@context': ['https://w3id.org/did/v1'],
+  id: 'did:op:efba17455c127a885ec7830d687a8f6e64f5ba559f8506f8723c1f10f05c049c',
+  version: '4.1.0',
+  chainId: 5,
+  nftAddress: '0x0',
+  metadata: {
+    created: '2021-12-20T14:35:20Z',
+    updated: '2021-12-20T14:35:20Z',
+    type: 'algorithm',
+    name: 'algorithm-name',
+    description: 'Ocean protocol test algorithm description',
+    author: 'oceanprotocol-team',
+    license: 'https://market.oceanprotocol.com/terms',
+    additionalInformation: {
+      termsAndConditions: true
+    },
+    algorithm: {
+      language: 'Node.js',
+      version: '1.0.0',
+      container: {
+        entrypoint: 'node $ALGO',
+        image: 'ubuntu',
+        tag: 'latest',
+        checksum:
+          'sha256:2d7ecc9c5e08953d586a6e50c29b91479a48f69ac1ba1f9dc0420d18a728dfc5'
+      }
+    }
+  },
+  services: [
+    {
+      id: 'notAnId',
+      type: 'access',
+      files: '',
+      datatokenAddress: '0xa15024b732A8f2146423D14209eFd074e61964F3',
+      serviceEndpoint: 'https://v4.provider.goerli.oceanprotocol.com',
+      timeout: 300
+    }
+  ]
+}
+```
+
+Now we define the variables which we will need later
+```Typescript
+let web3: Web3
+let config: Config
+let aquarius: Aquarius
+let datatoken: Datatoken
+let providerUrl: string
+let publisherAccount: string
+let consumerAccount: string
+let addresses
+let computeEnvs
+
+let datasetId: string
+let algorithmId: string
+let resolvedDatasetDdo: DDO
+let resolvedAlgorithmDdo: DDO
+
+let computeJobId: string
+```
+
+### 4.3 Helper methods
+
+Now we define the helper methods which we will use later to publish the dataset and algorithm, and also order them
+
+Add a `createAsset()`function.
+```Typescript
+async function createAsset(
+  name: string,
+  symbol: string,
+  owner: string,
+  assetUrl: Files,
+  ddo: DDO,
+  providerUrl: string
+) {
+  const nft = new Nft(web3)
+  const Factory = new NftFactory(addresses.ERC721Factory, web3)
+
+  // Now we update the DDO and set the right did
+  const chain = await web3.eth.getChainId()
+  ddo.chainId = parseInt(chain.toString(10))
+  const nftParamsAsset: NftCreateData = {
+    name,
+    symbol,
+    templateIndex: 1,
+    tokenURI: 'aaa',
+    transferable: true,
+    owner
+  }
+  const datatokenParams: DatatokenCreateParams = {
+    templateIndex: 1,
+    cap: '100000',
+    feeAmount: '0',
+    paymentCollector: ZERO_ADDRESS,
+    feeToken: ZERO_ADDRESS,
+    minter: owner,
+    mpFeeAddress: ZERO_ADDRESS
+  }
+  // Now we can make the contract call createNftWithDatatoken
+  const result = await Factory.createNftWithDatatoken(
+    owner,
+    nftParamsAsset,
+    datatokenParams
+  )
+
+  const nftAddress = result.events.NFTCreated.returnValues[0]
+  const datatokenAddressAsset = result.events.TokenCreated.returnValues[0]
+  ddo.nftAddress = web3.utils.toChecksumAddress(nftAddress)
+
+  // Next we encrypt the file or files using Ocean Provider. The provider is an off chain proxy built specifically for this task
+  assetUrl.datatokenAddress = datatokenAddressAsset
+  assetUrl.nftAddress = ddo.nftAddress
+  let providerResponse = await ProviderInstance.encrypt(assetUrl, providerUrl)
+  ddo.services[0].files = await providerResponse
+  ddo.services[0].datatokenAddress = datatokenAddressAsset
+  ddo.services[0].serviceEndpoint = providerUrl
+
+  // Next we update ddo and set the right did
+  ddo.nftAddress = web3.utils.toChecksumAddress(nftAddress)
+  ddo.id =
+    'did:op:' + SHA256(web3.utils.toChecksumAddress(nftAddress) + chain.toString(10))
+  providerResponse = await ProviderInstance.encrypt(ddo, providerUrl)
+  const encryptedResponse = await providerResponse
+  const validateResult = await aquarius.validate(ddo)
+
+  // Next you can check if if the ddo is valid by checking if validateResult.valid returned true
+
+  await nft.setMetadata(
+    nftAddress,
+    owner,
+    0,
+    providerUrl,
+    '',
+    '0x2',
+    encryptedResponse,
+    validateResult.hash
+  )
+  return ddo.id
+}
+```
+
+Add a `handleOrder()`function.
+```Typescript
+async function handleOrder(
+  order: ProviderComputeInitialize,
+  datatokenAddress: string,
+  payerAccount: string,
+  consumerAccount: string,
+  serviceIndex: number,
+  consumeMarkerFee?: ConsumeMarketFee
+) {
+  /* We do have 3 possible situations:
+     - have validOrder and no providerFees -> then order is valid, providerFees are valid, just use it in startCompute
+     - have validOrder and providerFees -> then order is valid but providerFees are not valid, we need to call reuseOrder and pay only providerFees
+     - no validOrder -> we need to call startOrder, to pay 1 DT & providerFees
+  */
+  if (order.providerFee && order.providerFee.providerFeeAmount) {
+    await approveWei(
+      web3,
+      config,
+      payerAccount,
+      order.providerFee.providerFeeToken,
+      datatokenAddress,
+      order.providerFee.providerFeeAmount
+    )
+  }
+  if (order.validOrder) {
+    if (!order.providerFee) return order.validOrder
+    const tx = await datatoken.reuseOrder(
+      datatokenAddress,
+      payerAccount,
+      order.validOrder,
+      order.providerFee
+    )
+    return tx.transactionHash
+  }
+  const tx = await datatoken.startOrder(
+    datatokenAddress,
+    payerAccount,
+    consumerAccount,
+    serviceIndex,
+    order.providerFee,
+    consumeMarkerFee
+  )
+  return tx.transactionHash
+}
+```
+
+At the end of your compute.ts file define `async function run(){ }`. We will use this function to add and test the following chunks of code.
+<!--
+describe('Compute-to-data example tests
+-->
+
+We need to load the configuration. Add the following code into your `run(){ }` function
+```Typescript
+  
+    web3 = new Web3(process.env.NODE_URI || configHelperNetworks[1].nodeUri)
+    config = new ConfigHelper().getConfig(await web3.eth.getChainId())
+    config.providerUri = process.env.PROVIDER_URL || config.providerUri
+    addresses = JSON.parse(
+      // eslint-disable-next-line security/detect-non-literal-fs-filename
+      fs.readFileSync(
+        process.env.ADDRESS_FILE ||
+          `${homedir}/.ocean/ocean-contracts/artifacts/address.json`,
+        'utf8'
+      )
+    ).development
+    aquarius = new Aquarius(config.metadataCacheUri)
+    providerUrl = config.providerUri
+    datatoken = new Datatoken(web3)
+```
+As we go along it's a good idea to console log the values so that you check they are right. At the end of your `run(){ ... }` function add the following logs:
+```Typescript
+    console.log(`Aquarius URL: ${config.metadataCacheUri}`)
+    console.log(`Provider URL: ${providerUrl}`)
+    console.log(`Deployed contracts address: ${addresses}`)
+  
+```
+
+Now at the end of your compute.ts file call you `run()` function. Next, let's compile the file with the `tsc` command in the console and run `node dist/compute.js`.
+If everything is working you should see the logs in the console and no errors.
+## 5. Initialize accounts
+  ### 5.1 Initialize accounts
+We will use all of the following code snippets in the same way. Add the code snippet and the logs to the end of your `run(){ ... }` function as well as the logs.
+Then compile your file with the `tsc` command and run it with `node dist/compute.js`
+```Typescript
+    const accounts = await web3.eth.getAccounts()
+    publisherAccount = accounts[0]
+    consumerAccount = accounts[1]
+```
+Again, lets console log the values so that we can check that they have been saved properly
+```Typescript
+    console.log(`Publisher account address: ${publisherAccount}`)
+    console.log(`Consumer account address: ${consumerAccount}`)
+  
+```
+
+  ### 5.2 Mint OCEAN to publisher account
+You can skip this step if you are running your script against a remote network,
+you need to mint oceans to mentioned accounts only if you are using barge to test your script
+
+```Typescript
+    const minAbi = [
+      {
+        constant: false,
+        inputs: [
+          { name: 'to', type: 'address' },
+          { name: 'value', type: 'uint256' }
+        ],
+        name: 'mint',
+        outputs: [{ name: '', type: 'bool' }],
+        payable: false,
+        stateMutability: 'nonpayable',
+        type: 'function'
+      }
+    ] as AbiItem[]
+    const tokenContract = new web3.eth.Contract(minAbi, addresses.Ocean)
+    const estGas = await calculateEstimatedGas(
+      publisherAccount,
+      tokenContract.methods.mint,
+      publisherAccount,
+      web3.utils.toWei('1000')
+    )
+    await sendTx(
+      publisherAccount,
+      estGas,
+      web3,
+      1,
+      tokenContract.methods.mint,
+      publisherAccount,
+      web3.utils.toWei('1000')
+    )
+  
+```
+
+  ### 5.3 Send some OCEAN to consumer account
+```Typescript
+    transfer(web3, config, publisherAccount, addresses.Ocean, consumerAccount, '100')
+  
+```
+
+## 6. Publish assets dataset and algorithm
+
+  ### 6.1 Publish a dataset (create NFT + Datatoken) and set dataset metadata
+```Typescript
+    datasetId = await createAsset(
+      'D1Min',
+      'D1M',
+      publisherAccount,
+      DATASET_ASSET_URL,
+      DATASET_DDO,
+      providerUrl
+    )
+```
+Now, let's check that we successfully published a dataset (create NFT + Datatoken)
+```Typescript
+    console.log(`dataset id: ${datasetId}`)
+  
+```
+
+  ### 6.2 Publish an algorithm (create NFT + Datatoken) and set algorithm metadata
+```Typescript
+    algorithmId = await createAsset(
+      'D1Min',
+      'D1M',
+      publisherAccount,
+      ALGORITHM_ASSET_URL,
+      ALGORITHM_DDO,
+      providerUrl
+    )
+```
+Now, let's check that we successfully published a algorithm (create NFT + Datatoken)
+```Typescript
+    console.log(`algorithm id: ${algorithmId}`)
+  
+```
+
+## 7. Resolve assets
+
+  ### 7.1 Resolve published datasets and algorithms
+```Typescript
+    resolvedDatasetDdo = await aquarius.waitForAqua(datasetId)
+    resolvedAlgorithmDdo = await aquarius.waitForAqua(algorithmId)
+```
+<!--
+    assert(resolvedDatasetDdo, 'Cannot fetch DDO from Aquarius')
+    assert(resolvedAlgorithmDdo, 'Cannot fetch DDO from Aquarius')
+-->
+  
+
+## 8. Send datatokens to consumer
+
+  ### 8.1 Mint dataset and algorithm datatokens to publisher
+```Typescript
+    await datatoken.mint(
+      resolvedDatasetDdo.services[0].datatokenAddress,
+      publisherAccount,
+      '10',
+      consumerAccount
+    )
+
+    await datatoken.mint(
+      resolvedAlgorithmDdo.services[0].datatokenAddress,
+      publisherAccount,
+      '10',
+      consumerAccount
+    )
+  
+```
+
+## 9. Get compute environments
+
+  ### 9.1 Fetch compute environments from provider
+```Typescript
+    computeEnvs = await ProviderInstance.getComputeEnvironments(providerUrl)
+```
+<!--
+    assert(computeEnvs, 'No Compute environments found')
+-->
+  
+
+## 10. Consumer starts a compute job
+
+  ### 10.1 Start a compute job using a free C2D environment
+let's check the free compute environment
+```Typescript
+    const computeEnv = computeEnvs.find((ce) => ce.priceMin === 0)
+    console.log('Free compute environment = ', computeEnv)
+```
+<!--
+    assert(computeEnv, 'Cannot find the free compute env')
+-->
+
+Let's have 5 minute of compute access
+```Typescript
+    const mytime = new Date()
+    const computeMinutes = 5
+    mytime.setMinutes(mytime.getMinutes() + computeMinutes)
+    const computeValidUntil = Math.floor(mytime.getTime() / 1000)
+
+    const assets: ComputeAsset[] = [
+      {
+        documentId: resolvedDatasetDdo.id,
+        serviceId: resolvedDatasetDdo.services[0].id
+      }
+    ]
+    const dtAddressArray = [resolvedDatasetDdo.services[0].datatokenAddress]
+    const algo: ComputeAlgorithm = {
+      documentId: resolvedAlgorithmDdo.id,
+      serviceId: resolvedAlgorithmDdo.services[0].id
+    }
+
+    const providerInitializeComputeResults = await ProviderInstance.initializeCompute(
+      assets,
+      algo,
+      computeEnv.id,
+      computeValidUntil,
+      providerUrl,
+      consumerAccount
+    )
+```
+<!--
+    assert(!('error' in providerInitializeComputeResults), 'Cannot order algorithm')
+-->
+```Typescript
+    algo.transferTxId = await handleOrder(
+      providerInitializeComputeResults.algorithm,
+      resolvedAlgorithmDdo.services[0].datatokenAddress,
+      consumerAccount,
+      computeEnv.consumerAddress,
+      0
+    )
+    for (let i = 0; i < providerInitializeComputeResults.datasets.length; i++) {
+      assets[i].transferTxId = await handleOrder(
+        providerInitializeComputeResults.datasets[i],
+        dtAddressArray[i],
+        consumerAccount,
+        computeEnv.consumerAddress,
+        0
+      )
+    }
+    const computeJobs = await ProviderInstance.computeStart(
+      providerUrl,
+      web3,
+      consumerAccount,
+      computeEnv.id,
+      assets[0],
+      algo
+    )
+```
+<!--
+    assert(computeJobs, 'Cannot start compute job')
+-->
+Let's save the compute job it, we re going to use later
+```Typescript
+    computeJobId = computeJobs[0].jobId
+  
+```
+
+## 11. Check compute status and get download compute results URL
+  ### 11.1 Check compute status
+You can also add various delays so you see the various states of the compute job
+```Typescript
+    const jobStatus = await ProviderInstance.computeStatus(
+      providerUrl,
+      consumerAccount,
+      computeJobId,
+      DATASET_DDO.id
+    )
+```
+<!--
+    assert(jobStatus, 'Cannot retrieve compute status!')
+-->
+Now, let's see the current status of the previously started computer job
+```Typescript
+    console.log('Current status of the compute job: ', jobStatus)
+  
+```
+
+  ### 11.2 Get download compute results URL
+```Typescript
+    await sleep(10000)
+    const downloadURL = await ProviderInstance.getComputeResultUrl(
+      providerUrl,
+      web3,
+      consumerAccount,
+      computeJobId,
+      0
+    )
+```
+<!--
+    assert(downloadURL, 'Provider getComputeResultUrl failed!')
+-->
+Let's check the compute results url for the specified index
+```Typescript
+    console.log(`Compute results URL: ${downloadURL}`)
+  
+```
+
+
+## Editing this file
+Please note that ComputeExamples.md is an autogenerated file, you should not edit it directly.
+Updates should be done in `test/integration/ComputeExamples.test.ts` and all markdown should have three forward slashes before it
+e.g. `/// # H1 Title`

README.md

@@ -46,7 +46,7 @@ This is in alpha state. If you run into problems, please open up a [new issue](h
 npm install @oceanprotocol/lib
 ```
 
-- Checkout our [code examples](CodeExamples.md) to see how you can use ocean.js.
+- Checkout our [code examples](CodeExamples.md) or [compute to data examples](C2DExamples.md) to see how you can use ocean.js.
 - Refer to the [Ocean Protocol documentation](https://docs.oceanprotocol.com/) for more guides and tutorials.
 - Visit the [Ocean Protocol website](https://docs.oceanprotocol.com/) for general information about Ocean Protocol.
 - If you have any difficulties or if you have further questions about how to use ocean.js please reach out to us on [Discord](https://discord.gg/TnXjkR5).
@@ -85,7 +85,7 @@ Running all tests requires running Ocean Protocol components beforehand with [Ba
 git clone https://github.com/oceanprotocol/barge
 cd barge
 
-./start_ocean.sh --with-provider2 --no-dashboard
+./start_ocean.sh --with-provider2 --no-dashboard --with-c2d
 ```
 
 You can then proceed to run in another terminal.

package.json

@@ -32,8 +32,9 @@
     "test:unit:cover": "nyc --report-dir coverage/unit --exclude 'src/@types/**/*' npm run test:unit",
     "test:integration": "npm run mocha -- 'test/integration/**/*.test.ts'",
     "test:integration:cover": "nyc --report-dir coverage/integration --no-clean npm run test:integration",
-    "create:guide": "./scripts/createCodeExamples.sh",
+    "create:guide": "./scripts/createCodeExamples.sh test/integration/CodeExamples.test.ts",
-    "commit:guide": "./scripts/commitChanges.sh"
+    "create:guidec2d": "./scripts/createCodeExamples.sh test/integration/ComputeExamples.test.ts",
+    "commit:guides": "./scripts/commitChanges.sh"
   },
   "repository": {
     "type": "git",

scripts/commitChanges.sh

@@ -17,4 +17,25 @@ else
     branch=${GITHUB_HEAD_REF#refs/heads/}
     echo Pushing changes to branch: ${branch}
     git push origin HEAD:${branch} --force
+fi
+
+# Check if the ComputeExamples.md file has been changed
+original=$(md5sum ComputeExamples.md)
+echo $original
+npm run create:guidec2d
+new=$(md5sum ComputeExamples.md)
+echo $new
+
+# Check if file has changed
+if [ "$new" = "$original" ]; then
+    echo "ComputeExamples.md file has not been changed"
+else
+    echo "ComputeExamples.md file has been changed. Committing changes"
+    # Stage the file, commit and push
+    git status
+    git add ComputeExamples.md
+    git commit -m "Updating ComputeExamples.md"
+    branch=${GITHUB_HEAD_REF#refs/heads/}
+    echo Pushing changes to branch: ${branch}
+    git push origin HEAD:${branch} --force
 fi

scripts/createCodeExamples.sh

@@ -1,21 +1,49 @@
 #!/bin/bash
+# We get the path to the test script that we want to use as a template
+inputfile=$1
+# We check if the input file exists
+if [ ! -f "$inputfile" ]; then
+  echo "File $inputfile does not exist"
+  exit 1
+fi
+
+echo "File $inputfile found"
+inputesize=$(md5sum $inputfile)
+echo $inputesize
+
+# We get the path to the output file
+outputfile="$(basename -a -s .test.ts $inputfile).md"
+
+echo "Generated output $outputfile "
+
 # Create markdown file
-cp test/integration/CodeExamples.test.ts CodeExamples.md
+cp $inputfile $outputfile
+
+echo "after copy into $outputfile"
+
+# Parameters of sed command depending on the OS
+if [[ $(uname) == 'Darwin' ]]; then
+  # if platform is Mac OS X
+  params="-i '' -e "
+else
+  params="-i "
+fi
 
 # Remove unneccessay imports
-sed -i "s/import { assert } from 'chai'//" CodeExamples.md
+eval "sed $params \"s/import { assert } from 'chai'//\" $outputfile"
 
+# Change imports
+eval "sed $params \"s/} from '..\/..\/src'/} from '@oceanprotocol\/lib'/\" $outputfile"
 
 # Replace comments
-sed -i 's/}) \/\/\/ //' CodeExamples.md
+eval "sed $params \"s/}) \/\/\/ //\" $outputfile"
-sed -i 's/}) \/\/\///' CodeExamples.md
+eval "sed $params \"s/}) \/\/\///\" $outputfile"
-sed -i 's/    \/\/\/ //' CodeExamples.md
+eval "sed $params \"s/    \/\/\/ //\" $outputfile"
-sed -i 's/  \/\/\/ //' CodeExamples.md
+eval "sed $params \"s/  \/\/\/ //\" $outputfile"
-sed -i 's/\/\/\/ //' CodeExamples.md
+eval "sed $params \"s/\/\/\/ //\" $outputfile"
-
 
 # Generate titles
-sed -i "s/describe('Simple Publish & Consume Flow', async () => {//" CodeExamples.md
+eval "sed $params \"s/describe('Simple Publish & Consume Flow', async () => {//\" $outputfile"
-sed -i "s/it('/\#\#\# /" CodeExamples.md
+eval "sed $params \"s/it('/\#\#\# /\" $outputfile"
-sed -i "s/', async () => {//" CodeExamples.md
+eval "sed $params \"s/', async () => {//\" $outputfile"
-sed -i "s/before(async () => {//" CodeExamples.md
+eval "sed $params \"s/before(async () => {//\" $outputfile"

test/integration/CodeExamples.test.ts

@@ -166,7 +166,7 @@ describe('Marketplace flow tests', async () => {
     '@context': ['https://w3id.org/did/v1'],
     id: '',
     version: '4.1.0',
-    chainId: 4,
+    chainId: 5,
     nftAddress: '0x0',
     metadata: {
       created: '2021-12-20T14:35:20Z',

test/integration/ComputeExamples.test.ts

@@ -0,0 +1,703 @@
+/// # Compute-to-Data (C2D) Code Examples
+
+/// Here are the steps:
+
+/// 0. [Prerequisites](#-Prerequisites)
+/// 1. [Initialize services](#-initialize-services)
+/// 2. [Create a new node.js project](#-create-a-new-node.js-project)
+/// 3. [Install dependencies](#-install-dependencies)
+/// 4. [Import dependencies and add variables and constants](#-import-dependencies-and-add-variables-and-constants)
+/// 5. [Initialize accounts and deploy contracts](#-initialize-accounts-and-deploy-contracts)
+/// 6. [Publish a dataset and  an algorithm](#-publish-a-dataset-data-nft-and-datatoken)
+/// 7. [Resolve published datasets and algorithms](#-resolve-published-datasets-and-algorithms)
+/// 8. [Send datatokens to consumer](#-send-datatokens-to-consumer)
+/// 9. [Consumer fetches compute environment](#-consumer-starts-a-compute-job-using-a-free-c2D-environment)
+/// 10. [Consumer starts a compute job using a free C2D environment](#-consumer-starts-a-compute-job-using-a-free-c2D-environment)
+/// 11. [Check compute status and get download compute results url](#-check-compute-status-and-get-download-compute-results-url)
+
+/// Let's go through each step.
+
+/// ## 0. Prerequisites
+/// Before we start it is important that you have all of the necessary prerequisites installed on your computer.
+/// - **A Unix based operating system (Linux or Mac)**. If you are a Windows user you can try to run linux inside a virtual machine but this is outside of the scope of this article.
+/// - **Git**. Instructions for installing Git can be found here: https://git-scm.com/book/en/v2/Getting-Started-Installing-Git
+/// - **Node.js** can be downloaded from here: https://nodejs.org/en/download/
+/// - **Docker** can be installed from here: https://docs.docker.com/get-docker/. Please note that Docker must run as a non-root user, you can set this up by following these instructions: https://docs.docker.com/engine/install/linux-postinstall/
+
+/// ## 1. Initialize services
+
+/// Ocean.js uses off-chain services for metadata (Aquarius) and consuming datasets (Provider).
+
+/// We start by initializing the services. To do this, we clone the Barge repository and run it. This will run the current default versions of [Aquarius](https://github.com/oceanprotocol/aquarius), [Provider](https://github.com/oceanprotocol/provider), and [Ganache](https://github.com/trufflesuite/ganache) with [our contracts](https://github.com/oceanprotocol/contracts) deployed to it.
+
+/// ```bash
+/// git clone https://github.com/oceanprotocol/barge.git
+/// cd barge/
+/// ./start_ocean.sh --with-provider2 --no-dashboard --with-c2d
+/// ```
+
+/// ## 2. Create a new Node.js project with TypeScript
+
+/// Start by creating a new Node.js project. Open a new terminal and enter the following commands:
+
+/// ```bash
+/// mkdir compute-quickstart
+/// cd compute-quickstart
+/// npm init
+/// # Answer the questions in the command line prompt
+/// touch compute.ts
+/// # On linux press CTRL + D to save
+/// ```
+
+/// Next, we need to setup our TypeScript compiler options. Create a new file called `tsconfig.json` in the root of the `compute-quickstart` directory.
+
+/// ```bash
+/// touch tsconfig.json
+/// # Copy the following json content into the file, On linux press CTRL + D to save
+/// ```
+
+/// ```json
+/// {
+///   "compilerOptions": {
+///     "lib": ["es6", "es7"],
+///     "module": "CommonJS",
+///     "target": "ES5",
+///     "esModuleInterop": true,
+///     "allowSyntheticDefaultImports": true,
+///     "outDir": "./dist/",
+///     "declaration": true,
+///     "declarationDir": "./dist/"
+///   },
+///   "include": [
+///     "compute.ts"
+///   ],
+///   "exclude": [ "node_modules", "dist" ]
+/// }
+/// ```
+
+/// Now you can compile your TypeScript project.
+/// If you have TypeScript installed use the following command:
+
+/// ```bash
+/// tsc
+/// ```
+
+/// If you don't have TypeScript installed you can install it using the command below and then compile using the above command:
+
+/// ```bash
+/// npm install -g typescript
+/// ```
+
+/// Or if you don't want to install TypeScript use the following command to compile your file:
+/// ```bash
+/// npx tsc compute.ts
+/// ```
+
+/// To run your script as we go along, compile the script then you can use the following command:
+
+/// ```bash
+/// node dist/compute.js
+/// ```
+
+/// ## 3. Install dependencies
+
+/// Install dependencies running the following command in your terminal:
+
+/// ```bash
+/// npm install @oceanprotocol/lib crypto-js web3 web3-utils typescript @types/node ts-node
+/// ```
+
+/// ## 4. Import dependencies and add variables, constants and helper methods
+
+/// Now open the `compute.ts` file in your text editor.
+
+/// ### 4.1. Dependencies
+
+/// Start by importing all of the necessary dependencies
+
+/// ```Typescript
+import fs from 'fs'
+import { homedir } from 'os'
+import { assert } from 'chai'
+import { SHA256 } from 'crypto-js'
+import Web3 from 'web3'
+import { AbiItem } from 'web3-utils'
+import {
+  ProviderInstance,
+  Aquarius,
+  NftFactory,
+  Datatoken,
+  Nft,
+  ZERO_ADDRESS,
+  transfer,
+  sleep,
+  approveWei,
+  ProviderComputeInitialize,
+  ConsumeMarketFee,
+  ComputeAlgorithm,
+  ComputeAsset,
+  Config,
+  Files,
+  DDO,
+  NftCreateData,
+  DatatokenCreateParams,
+  calculateEstimatedGas,
+  sendTx,
+  configHelperNetworks,
+  ConfigHelper
+} from '../../src'
+
+/// ```
+
+/// ### 4.2. Constants and variables
+
+///  We will need two files to publish, one as dataset and one as algorithm, so here we define the files that we intend to publish.
+/// ```Typescript
+const DATASET_ASSET_URL: Files = {
+  datatokenAddress: '0x0',
+  nftAddress: '0x0',
+  files: [
+    {
+      type: 'url',
+      url: 'https://raw.githubusercontent.com/oceanprotocol/testdatasets/main/shs_dataset_test.txt',
+      method: 'GET'
+    }
+  ]
+}
+
+const ALGORITHM_ASSET_URL: Files = {
+  datatokenAddress: '0x0',
+  nftAddress: '0x0',
+  files: [
+    {
+      type: 'url',
+      url: 'https://raw.githubusercontent.com/oceanprotocol/testdatasets/main/shs_dataset_test.txt',
+      method: 'GET'
+    }
+  ]
+}
+/// ```
+
+/// Next, we define the metadata for the dataset and algorithm that will describe our data assets. This is what we call the DDOs
+/// ```Typescript
+const DATASET_DDO: DDO = {
+  '@context': ['https://w3id.org/did/v1'],
+  id: 'id:op:efba17455c127a885ec7830d687a8f6e64f5ba559f8506f8723c1f10f05c049c',
+  version: '4.1.0',
+  chainId: 5,
+  nftAddress: '0x0',
+  metadata: {
+    created: '2021-12-20T14:35:20Z',
+    updated: '2021-12-20T14:35:20Z',
+    type: 'dataset',
+    name: 'dataset-name',
+    description: 'Ocean protocol test dataset description',
+    author: 'oceanprotocol-team',
+    license: 'https://market.oceanprotocol.com/terms',
+    additionalInformation: {
+      termsAndConditions: true
+    }
+  },
+  services: [
+    {
+      id: 'notAnId',
+      type: 'compute',
+      files: '',
+      datatokenAddress: '0xa15024b732A8f2146423D14209eFd074e61964F3',
+      serviceEndpoint: 'https://v4.provider.goerli.oceanprotocol.com/',
+      timeout: 300,
+      compute: {
+        publisherTrustedAlgorithmPublishers: [],
+        publisherTrustedAlgorithms: [],
+        allowRawAlgorithm: true,
+        allowNetworkAccess: true
+      }
+    }
+  ]
+}
+
+const ALGORITHM_DDO: DDO = {
+  '@context': ['https://w3id.org/did/v1'],
+  id: 'did:op:efba17455c127a885ec7830d687a8f6e64f5ba559f8506f8723c1f10f05c049c',
+  version: '4.1.0',
+  chainId: 5,
+  nftAddress: '0x0',
+  metadata: {
+    created: '2021-12-20T14:35:20Z',
+    updated: '2021-12-20T14:35:20Z',
+    type: 'algorithm',
+    name: 'algorithm-name',
+    description: 'Ocean protocol test algorithm description',
+    author: 'oceanprotocol-team',
+    license: 'https://market.oceanprotocol.com/terms',
+    additionalInformation: {
+      termsAndConditions: true
+    },
+    algorithm: {
+      language: 'Node.js',
+      version: '1.0.0',
+      container: {
+        entrypoint: 'node $ALGO',
+        image: 'ubuntu',
+        tag: 'latest',
+        checksum:
+          'sha256:2d7ecc9c5e08953d586a6e50c29b91479a48f69ac1ba1f9dc0420d18a728dfc5'
+      }
+    }
+  },
+  services: [
+    {
+      id: 'notAnId',
+      type: 'access',
+      files: '',
+      datatokenAddress: '0xa15024b732A8f2146423D14209eFd074e61964F3',
+      serviceEndpoint: 'https://v4.provider.goerli.oceanprotocol.com',
+      timeout: 300
+    }
+  ]
+}
+/// ```
+
+/// Now we define the variables which we will need later
+/// ```Typescript
+let web3: Web3
+let config: Config
+let aquarius: Aquarius
+let datatoken: Datatoken
+let providerUrl: string
+let publisherAccount: string
+let consumerAccount: string
+let addresses
+let computeEnvs
+
+let datasetId: string
+let algorithmId: string
+let resolvedDatasetDdo: DDO
+let resolvedAlgorithmDdo: DDO
+
+let computeJobId: string
+/// ```
+
+/// ### 4.3 Helper methods
+
+/// Now we define the helper methods which we will use later to publish the dataset and algorithm, and also order them
+
+/// Add a `createAsset()`function.
+/// ```Typescript
+async function createAsset(
+  name: string,
+  symbol: string,
+  owner: string,
+  assetUrl: Files,
+  ddo: DDO,
+  providerUrl: string
+) {
+  const nft = new Nft(web3)
+  const Factory = new NftFactory(addresses.ERC721Factory, web3)
+
+  // Now we update the DDO and set the right did
+  const chain = await web3.eth.getChainId()
+  ddo.chainId = parseInt(chain.toString(10))
+  const nftParamsAsset: NftCreateData = {
+    name,
+    symbol,
+    templateIndex: 1,
+    tokenURI: 'aaa',
+    transferable: true,
+    owner
+  }
+  const datatokenParams: DatatokenCreateParams = {
+    templateIndex: 1,
+    cap: '100000',
+    feeAmount: '0',
+    paymentCollector: ZERO_ADDRESS,
+    feeToken: ZERO_ADDRESS,
+    minter: owner,
+    mpFeeAddress: ZERO_ADDRESS
+  }
+  // Now we can make the contract call createNftWithDatatoken
+  const result = await Factory.createNftWithDatatoken(
+    owner,
+    nftParamsAsset,
+    datatokenParams
+  )
+
+  const nftAddress = result.events.NFTCreated.returnValues[0]
+  const datatokenAddressAsset = result.events.TokenCreated.returnValues[0]
+  ddo.nftAddress = web3.utils.toChecksumAddress(nftAddress)
+
+  // Next we encrypt the file or files using Ocean Provider. The provider is an off chain proxy built specifically for this task
+  assetUrl.datatokenAddress = datatokenAddressAsset
+  assetUrl.nftAddress = ddo.nftAddress
+  let providerResponse = await ProviderInstance.encrypt(assetUrl, providerUrl)
+  ddo.services[0].files = await providerResponse
+  ddo.services[0].datatokenAddress = datatokenAddressAsset
+  ddo.services[0].serviceEndpoint = providerUrl
+
+  // Next we update ddo and set the right did
+  ddo.nftAddress = web3.utils.toChecksumAddress(nftAddress)
+  ddo.id =
+    'did:op:' + SHA256(web3.utils.toChecksumAddress(nftAddress) + chain.toString(10))
+  providerResponse = await ProviderInstance.encrypt(ddo, providerUrl)
+  const encryptedResponse = await providerResponse
+  const validateResult = await aquarius.validate(ddo)
+
+  // Next you can check if if the ddo is valid by checking if validateResult.valid returned true
+
+  await nft.setMetadata(
+    nftAddress,
+    owner,
+    0,
+    providerUrl,
+    '',
+    '0x2',
+    encryptedResponse,
+    validateResult.hash
+  )
+  return ddo.id
+}
+/// ```
+
+/// Add a `handleOrder()`function.
+/// ```Typescript
+async function handleOrder(
+  order: ProviderComputeInitialize,
+  datatokenAddress: string,
+  payerAccount: string,
+  consumerAccount: string,
+  serviceIndex: number,
+  consumeMarkerFee?: ConsumeMarketFee
+) {
+  /* We do have 3 possible situations:
+     - have validOrder and no providerFees -> then order is valid, providerFees are valid, just use it in startCompute
+     - have validOrder and providerFees -> then order is valid but providerFees are not valid, we need to call reuseOrder and pay only providerFees
+     - no validOrder -> we need to call startOrder, to pay 1 DT & providerFees
+  */
+  if (order.providerFee && order.providerFee.providerFeeAmount) {
+    await approveWei(
+      web3,
+      config,
+      payerAccount,
+      order.providerFee.providerFeeToken,
+      datatokenAddress,
+      order.providerFee.providerFeeAmount
+    )
+  }
+  if (order.validOrder) {
+    if (!order.providerFee) return order.validOrder
+    const tx = await datatoken.reuseOrder(
+      datatokenAddress,
+      payerAccount,
+      order.validOrder,
+      order.providerFee
+    )
+    return tx.transactionHash
+  }
+  const tx = await datatoken.startOrder(
+    datatokenAddress,
+    payerAccount,
+    consumerAccount,
+    serviceIndex,
+    order.providerFee,
+    consumeMarkerFee
+  )
+  return tx.transactionHash
+}
+/// ```
+
+/// At the end of your compute.ts file define `async function run(){ }`. We will use this function to add and test the following chunks of code.
+/// <!--
+describe('Compute-to-data example tests', async () => {
+  /// -->
+
+  /// We need to load the configuration. Add the following code into your `run(){ }` function
+  /// ```Typescript
+  before(async () => {
+    web3 = new Web3(process.env.NODE_URI || configHelperNetworks[1].nodeUri)
+    config = new ConfigHelper().getConfig(await web3.eth.getChainId())
+    config.providerUri = process.env.PROVIDER_URL || config.providerUri
+    addresses = JSON.parse(
+      // eslint-disable-next-line security/detect-non-literal-fs-filename
+      fs.readFileSync(
+        process.env.ADDRESS_FILE ||
+          `${homedir}/.ocean/ocean-contracts/artifacts/address.json`,
+        'utf8'
+      )
+    ).development
+    aquarius = new Aquarius(config.metadataCacheUri)
+    providerUrl = config.providerUri
+    datatoken = new Datatoken(web3)
+    /// ```
+    /// As we go along it's a good idea to console log the values so that you check they are right. At the end of your `run(){ ... }` function add the following logs:
+    /// ```Typescript
+    console.log(`Aquarius URL: ${config.metadataCacheUri}`)
+    console.log(`Provider URL: ${providerUrl}`)
+    console.log(`Deployed contracts address: ${addresses}`)
+  }) ///
+  /// ```
+
+  /// Now at the end of your compute.ts file call you `run()` function. Next, let's compile the file with the `tsc` command in the console and run `node dist/compute.js`.
+  /// If everything is working you should see the logs in the console and no errors.
+  /// ## 5. Initialize accounts
+  it('5.1 Initialize accounts', async () => {
+    /// We will use all of the following code snippets in the same way. Add the code snippet and the logs to the end of your `run(){ ... }` function as well as the logs.
+    /// Then compile your file with the `tsc` command and run it with `node dist/compute.js`
+    /// ```Typescript
+    const accounts = await web3.eth.getAccounts()
+    publisherAccount = accounts[0]
+    consumerAccount = accounts[1]
+    /// ```
+    /// Again, lets console log the values so that we can check that they have been saved properly
+    /// ```Typescript
+    console.log(`Publisher account address: ${publisherAccount}`)
+    console.log(`Consumer account address: ${consumerAccount}`)
+  }) ///
+  /// ```
+
+  it('5.2 Mint OCEAN to publisher account', async () => {
+    /// You can skip this step if you are running your script against a remote network,
+    /// you need to mint oceans to mentioned accounts only if you are using barge to test your script
+
+    /// ```Typescript
+    const minAbi = [
+      {
+        constant: false,
+        inputs: [
+          { name: 'to', type: 'address' },
+          { name: 'value', type: 'uint256' }
+        ],
+        name: 'mint',
+        outputs: [{ name: '', type: 'bool' }],
+        payable: false,
+        stateMutability: 'nonpayable',
+        type: 'function'
+      }
+    ] as AbiItem[]
+    const tokenContract = new web3.eth.Contract(minAbi, addresses.Ocean)
+    const estGas = await calculateEstimatedGas(
+      publisherAccount,
+      tokenContract.methods.mint,
+      publisherAccount,
+      web3.utils.toWei('1000')
+    )
+    await sendTx(
+      publisherAccount,
+      estGas,
+      web3,
+      1,
+      tokenContract.methods.mint,
+      publisherAccount,
+      web3.utils.toWei('1000')
+    )
+  }) ///
+  /// ```
+
+  it('5.3 Send some OCEAN to consumer account', async () => {
+    /// ```Typescript
+    transfer(web3, config, publisherAccount, addresses.Ocean, consumerAccount, '100')
+  }) ///
+  /// ```
+
+  /// ## 6. Publish assets dataset and algorithm
+
+  it('6.1 Publish a dataset (create NFT + Datatoken) and set dataset metadata', async () => {
+    /// ```Typescript
+    datasetId = await createAsset(
+      'D1Min',
+      'D1M',
+      publisherAccount,
+      DATASET_ASSET_URL,
+      DATASET_DDO,
+      providerUrl
+    )
+    /// ```
+    /// Now, let's check that we successfully published a dataset (create NFT + Datatoken)
+    /// ```Typescript
+    console.log(`dataset id: ${datasetId}`)
+  }) ///
+  /// ```
+
+  it('6.2 Publish an algorithm (create NFT + Datatoken) and set algorithm metadata', async () => {
+    /// ```Typescript
+    algorithmId = await createAsset(
+      'D1Min',
+      'D1M',
+      publisherAccount,
+      ALGORITHM_ASSET_URL,
+      ALGORITHM_DDO,
+      providerUrl
+    )
+    /// ```
+    /// Now, let's check that we successfully published a algorithm (create NFT + Datatoken)
+    /// ```Typescript
+    console.log(`algorithm id: ${algorithmId}`)
+  }) ///
+  /// ```
+
+  /// ## 7. Resolve assets
+
+  it('7.1 Resolve published datasets and algorithms', async () => {
+    /// ```Typescript
+    resolvedDatasetDdo = await aquarius.waitForAqua(datasetId)
+    resolvedAlgorithmDdo = await aquarius.waitForAqua(algorithmId)
+    /// ```
+    /// <!--
+    assert(resolvedDatasetDdo, 'Cannot fetch DDO from Aquarius')
+    assert(resolvedAlgorithmDdo, 'Cannot fetch DDO from Aquarius')
+    /// -->
+  }) ///
+
+  /// ## 8. Send datatokens to consumer
+
+  it('8.1 Mint dataset and algorithm datatokens to publisher', async () => {
+    /// ```Typescript
+    await datatoken.mint(
+      resolvedDatasetDdo.services[0].datatokenAddress,
+      publisherAccount,
+      '10',
+      consumerAccount
+    )
+
+    await datatoken.mint(
+      resolvedAlgorithmDdo.services[0].datatokenAddress,
+      publisherAccount,
+      '10',
+      consumerAccount
+    )
+  }) ///
+  /// ```
+
+  /// ## 9. Get compute environments
+
+  it('9.1 Fetch compute environments from provider', async () => {
+    /// ```Typescript
+    computeEnvs = await ProviderInstance.getComputeEnvironments(providerUrl)
+    /// ```
+    /// <!--
+    assert(computeEnvs, 'No Compute environments found')
+    /// -->
+  }) ///
+
+  /// ## 10. Consumer starts a compute job
+
+  it('10.1 Start a compute job using a free C2D environment', async () => {
+    /// let's check the free compute environment
+    /// ```Typescript
+    const computeEnv = computeEnvs.find((ce) => ce.priceMin === 0)
+    console.log('Free compute environment = ', computeEnv)
+    /// ```
+    /// <!--
+    assert(computeEnv, 'Cannot find the free compute env')
+    /// -->
+
+    /// Let's have 5 minute of compute access
+    /// ```Typescript
+    const mytime = new Date()
+    const computeMinutes = 5
+    mytime.setMinutes(mytime.getMinutes() + computeMinutes)
+    const computeValidUntil = Math.floor(mytime.getTime() / 1000)
+
+    const assets: ComputeAsset[] = [
+      {
+        documentId: resolvedDatasetDdo.id,
+        serviceId: resolvedDatasetDdo.services[0].id
+      }
+    ]
+    const dtAddressArray = [resolvedDatasetDdo.services[0].datatokenAddress]
+    const algo: ComputeAlgorithm = {
+      documentId: resolvedAlgorithmDdo.id,
+      serviceId: resolvedAlgorithmDdo.services[0].id
+    }
+
+    const providerInitializeComputeResults = await ProviderInstance.initializeCompute(
+      assets,
+      algo,
+      computeEnv.id,
+      computeValidUntil,
+      providerUrl,
+      consumerAccount
+    )
+    /// ```
+    /// <!--
+    assert(!('error' in providerInitializeComputeResults), 'Cannot order algorithm')
+    /// -->
+    /// ```Typescript
+    algo.transferTxId = await handleOrder(
+      providerInitializeComputeResults.algorithm,
+      resolvedAlgorithmDdo.services[0].datatokenAddress,
+      consumerAccount,
+      computeEnv.consumerAddress,
+      0
+    )
+    for (let i = 0; i < providerInitializeComputeResults.datasets.length; i++) {
+      assets[i].transferTxId = await handleOrder(
+        providerInitializeComputeResults.datasets[i],
+        dtAddressArray[i],
+        consumerAccount,
+        computeEnv.consumerAddress,
+        0
+      )
+    }
+    const computeJobs = await ProviderInstance.computeStart(
+      providerUrl,
+      web3,
+      consumerAccount,
+      computeEnv.id,
+      assets[0],
+      algo
+    )
+    /// ```
+    /// <!--
+    assert(computeJobs, 'Cannot start compute job')
+    /// -->
+    /// Let's save the compute job it, we re going to use later
+    /// ```Typescript
+    computeJobId = computeJobs[0].jobId
+  }) ///
+  /// ```
+
+  /// ## 11. Check compute status and get download compute results URL
+  it('11.1 Check compute status', async () => {
+    /// You can also add various delays so you see the various states of the compute job
+    /// ```Typescript
+    const jobStatus = await ProviderInstance.computeStatus(
+      providerUrl,
+      consumerAccount,
+      computeJobId,
+      DATASET_DDO.id
+    )
+    /// ```
+    /// <!--
+    assert(jobStatus, 'Cannot retrieve compute status!')
+    /// -->
+    /// Now, let's see the current status of the previously started computer job
+    /// ```Typescript
+    console.log('Current status of the compute job: ', jobStatus)
+  }) ///
+  /// ```
+
+  it('11.2 Get download compute results URL', async () => {
+    /// ```Typescript
+    await sleep(10000)
+    const downloadURL = await ProviderInstance.getComputeResultUrl(
+      providerUrl,
+      web3,
+      consumerAccount,
+      computeJobId,
+      0
+    )
+    /// ```
+    /// <!--
+    assert(downloadURL, 'Provider getComputeResultUrl failed!')
+    /// -->
+    /// Let's check the compute results url for the specified index
+    /// ```Typescript
+    console.log(`Compute results URL: ${downloadURL}`)
+  }) ///
+  /// ```
+}) ///
+
+/// ## Editing this file
+/// Please note that ComputeExamples.md is an autogenerated file, you should not edit it directly.
+/// Updates should be done in `test/integration/ComputeExamples.test.ts` and all markdown should have three forward slashes before it
+/// e.g. `/// # H1 Title`

test/integration/ComputeFlow.test.ts

@@ -509,6 +509,10 @@ describe('Simple compute tests', async () => {
       providerUrl,
       consumerAccount
     )
+    console.log(
+      'compute flow initializeCompute result = ',
+      providerInitializeComputeResults
+    )
     assert(
       !('error' in providerInitializeComputeResults.algorithm),
       'Cannot order algorithm'