Merge pull request #71 from Permissionless-Software-Foundation/ct-unstable

Passing pagination paramter through to PSFFPP

PEDIGREE.md

@@ -1,3 +1,3 @@
 # Pedigree
 
-This repository was forked from [koa-api-boilerplate](https://github.com/christroutner/koa-api-boilerplate). Code changes from that upstream repository is frequently pulled in and merged to this repository.
+This repository was forked from [ipfs-service-provider](https://github.com/Permissionless-Software-Foundation/ipfs-service-provider). Code changes from that upstream repository is frequently pulled in and merged to this repository.

bin/server.js

@@ -25,6 +25,7 @@ import config from '../config/index.js' // this first.
 
 import AdminLib from '../src/adapters/admin.js'
 import errorMiddleware from '../src/controllers/rest-api/middleware/error.js'
+import { usageMiddleware } from '../src/use-cases/usage-use-cases.js'
 import wlogger from '../src/adapters/wlogger.js'
 import Controllers from '../src/controllers/index.js'
 import { applyPassportMods } from '../config/passport.js'
@@ -67,6 +68,7 @@ class Server {
       app.use(bodyParser())
       app.use(session())
       app.use(errorMiddleware())
+      app.use(usageMiddleware())
 
       // Used to generate the docs.
       app.use(mount('/', serve(`${process.cwd()}/docs`)))
@@ -123,7 +125,9 @@ class Server {
       console.log('\nConfiguration:')
       console.log(`Circuit Relay: ${this.config.isCircuitRelay}`)
       console.log(`IPFS TCP port: ${this.config.ipfsTcpPort}`)
-      console.log(`IPFS WS port: ${this.config.ipfsWsPort}\n`)
+      console.log(`IPFS WS port: ${this.config.ipfsWsPort}`)
+      console.log(`IPFS WebRTC port: ${this.config.ipfsWebRtcPort}`)
+      console.log(`Connection preference: ${this.config.connectPref}\n`)
 
       return app
     } catch (err) {

config/env/common.js

@@ -131,6 +131,8 @@ export default {
   // IPFS Ports
   ipfsTcpPort: process.env.IPFS_TCP_PORT ? process.env.IPFS_TCP_PORT : 4101,
   ipfsWsPort: process.env.IPFS_WS_PORT ? process.env.IPFS_WS_PORT : 4103,
+  ipfsWebRtcPort: process.env.IPFS_WEB_RTC_PORT ? process.env.IPFS_WEB_RTC_PORT : 4105,
+  connectPref: process.env.CONNECT_PREF, // Used in helia-coord to select connection preference.
 
   // Settings for production, using external go-ipfs node.
   isProduction: process.env.SVC_ENV === 'prod' ? true : false,

config/system-user-dev.json

@@ -1,6 +1,6 @@
 {
-  "password": "TRJkYBg4qDNLZfG5PJO6",
+  "password": "YsFhsCVCqussWyyLYUjM",
   "email": "system@system.com",
-  "id": "66e48033071977ff258c24ce",
-  "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjY2ZTQ4MDMzMDcxOTc3ZmYyNThjMjRjZSIsImlhdCI6MTcyNjI1MTA1OX0.RLjnUWy6NziVem0ciFcjfaQz_lplnNfxAZUEceygTf8"
+  "id": "67ffbea61a8de3388f82c401",
+  "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjY3ZmZiZWE2MWE4ZGUzMzg4ZjgyYzQwMSIsImlhdCI6MTc0NDgxMzczNH0.a4wM-CfGudF40yi4lwTsnd_aDZHrRn87zjHYxFZmeC4"
 }

index.js

@@ -1,4 +1,8 @@
 import Server from './bin/server.js'
 const server = new Server()
 
+process.on('unhandledRejection', (reason, promise) => {
+  console.log(`Handling ${reason.code} error. stack: `, reason)
+})
+
 server.startServer()

package.json

@@ -24,26 +24,28 @@
   },
   "repository": "Permissionless-Software-Foundation/ipfs-bch-wallet-consumer",
   "dependencies": {
-    "@chainsafe/libp2p-gossipsub": "13.1.1",
-    "@chainsafe/libp2p-noise": "15.1.1",
-    "@chainsafe/libp2p-yamux": "6.0.2",
-    "@helia/unixfs": "3.0.7",
-    "@libp2p/bootstrap": "10.1.5",
-    "@libp2p/circuit-relay-v2": "1.1.5",
-    "@libp2p/identify": "2.1.5",
-    "@libp2p/keychain": "4.1.5",
-    "@libp2p/logger": "4.0.20",
-    "@libp2p/tcp": "9.1.5",
-    "@libp2p/webrtc": "4.1.7",
-    "@libp2p/websockets": "8.2.0",
-    "@multiformats/multiaddr": "12.3.0",
+    "@chainsafe/libp2p-gossipsub": "14.1.0",
+    "@chainsafe/libp2p-noise": "16.0.1",
+    "@chainsafe/libp2p-yamux": "7.0.1",
+    "@helia/unixfs": "4.0.2",
+    "@libp2p/bootstrap": "11.0.26",
+    "@libp2p/circuit-relay-v2": "3.2.2",
+    "@libp2p/config": "1.1.0",
+    "@libp2p/identify": "3.0.22",
+    "@libp2p/keychain": "5.0.14",
+    "@libp2p/logger": "5.1.8",
+    "@libp2p/ping": "2.0.22",
+    "@libp2p/tcp": "10.1.2",
+    "@libp2p/webrtc": "5.2.2",
+    "@libp2p/websockets": "9.2.2",
+    "@multiformats/multiaddr": "12.3.5",
     "axios": "0.27.2",
     "bcryptjs": "2.4.3",
-    "blockstore-fs": "2.0.0",
-    "datastore-fs": "9.1.7",
+    "blockstore-fs": "2.0.2",
+    "datastore-fs": "10.0.2",
     "glob": "7.1.6",
-    "helia": "4.2.5",
-    "helia-coord": "1.5.14",
+    "helia": "5.2.1",
+    "helia-coord": "1.7.2",
     "jsonrpc-lite": "2.2.0",
     "jsonwebtoken": "8.5.1",
     "jwt-bch-lib": "1.3.0",
@@ -58,15 +60,15 @@
     "koa-router": "10.0.0",
     "koa-static": "5.0.0",
     "koa2-ratelimit": "0.9.1",
-    "libp2p": "1.9.1",
+    "libp2p": "2.7.2",
     "line-reader": "0.4.0",
     "mime-types": "2.1.35",
-    "minimal-slp-wallet": "5.12.0",
+    "minimal-slp-wallet": "5.13.2",
     "mongoose": "5.13.14",
     "node-fetch": "npm:@achingbrain/node-fetch@2.6.7",
     "nodemailer": "6.7.5",
     "passport-local": "1.0.0",
-    "psffpp": "1.1.9",
+    "psffpp": "1.2.0",
     "public-ip": "6.0.1",
     "semver": "7.3.5",
     "winston": "3.3.3",

production/docker/Dockerfile

@@ -66,9 +66,6 @@ RUN npm install
 # Generate the API docs
 RUN npm run docs
 
-# Expose the port the API will be served on.
-#EXPOSE 5010
-
 # Start the application.
 #COPY start-production.sh start-production.sh
 CMD ["./start-production.sh"]

production/docker/docker-compose.yml

@@ -26,9 +26,12 @@ services:
     links:
       - mongo-bch-consumer
     ports:
-      - '5015:5015' # <host port>:<container port>
-      - '4101:4101'
-      - '4103:4103'
+      # <host port>:<container port>
+      - '5015:5015' # REST API
+      - '4101:4101' # TCP
+      - '4103:4103' # Websockets
+      - '4105:4105' # WebRTC
+
     volumes:
       - ../data/ipfsdata:/home/safeuser/ipfs-bch-wallet-consumer/.ipfsdata
       - ./start-production.sh:/home/safeuser/ipfs-bch-wallet-consumer/start-production.sh

production/docker/start-production.sh

@@ -31,9 +31,15 @@ export IPFS_HOST=172.17.0.1
 export IPFS_API_PORT=5001
 export IPFS_TCP_PORT=4101
 export IPFS_WS_PORT=4103
+export IPFS_WEB_RTC_PORT=4105
 
 # Set the debug level for helia-coord. 0-3.
 # 0 = no debug logs. 3 = maximum debug logs.
 export DEBUG_LEVEL=0
 
+# Use this if the IPFS node has a publically accessible IP address.
+#export CONNECT_PREF=direct
+# Use this if the IPFS node is behind a NAT or Firewall and cannot be accessed directly.
+export CONNECT_PREF=cr
+
 npm start

src/adapters/ipfs-files/index.js

@@ -45,6 +45,10 @@ class IpfsFilesAdapter {
     this.rpcHandler = this.rpcHandler.bind(this)
     this.getStatus = this.getStatus.bind(this)
     this.selectProvider = this.selectProvider.bind(this)
+    this.getFileMetadata = this.getFileMetadata.bind(this)
+    this.getPins = this.getPins.bind(this)
+    this.waitForRPCResponse = this.waitForRPCResponse.bind(this)
+    this.pinClaim = this.pinClaim.bind(this)
   }
 
   // This handler is triggered when RPC data comes in over IPFS.
@@ -60,7 +64,7 @@ class IpfsFilesAdapter {
       this.rpcDataQueue.push(data)
     } catch (err) {
       console.error('Error in files/rpcHandler(): ', err)
-    // Do not throw error. This is a top-level function.
+      // Do not throw error. This is a top-level function.
     }
   }
 
@@ -77,7 +81,7 @@ class IpfsFilesAdapter {
 
       // Add names to the IPFS IDs for each provider.
       const initialServiceProviders =
-      this.ipfs.ipfsCoordAdapter.state.ipfsFileProviders
+        this.ipfs.ipfsCoordAdapter.state.ipfsFileProviders
       const serviceProviders = []
       for (let i = 0; i < initialServiceProviders.length; i++) {
         const thisProvider = initialServiceProviders[i]
@@ -120,7 +124,7 @@ class IpfsFilesAdapter {
       return true
     } catch (err) {
       // console.log('createUser() error: ', err)
-      wlogger.error('Error in adapters/files/getStatus()')
+      wlogger.error('Error in adapters/files/selectProvider()')
       throw err
     }
   }
@@ -139,7 +143,7 @@ class IpfsFilesAdapter {
       // Throw an error if this IPFS node has not yet made a connection to a
       // wallet service provider.
       const selectedProvider =
-      this.ipfs.ipfsCoordAdapter.state.selectedIpfsFileProvider
+        this.ipfs.ipfsCoordAdapter.state.selectedIpfsFileProvider
       if (!selectedProvider) {
         throw new Error('No IPFS File Pin Service provider available yet.')
       }
@@ -182,13 +186,16 @@ class IpfsFilesAdapter {
       // Throw an error if this IPFS node has not yet made a connection to a
       // wallet service provider.
       const selectedProvider =
-      this.ipfs.ipfsCoordAdapter.state.selectedIpfsFileProvider
+        this.ipfs.ipfsCoordAdapter.state.selectedIpfsFileProvider
       if (!selectedProvider) {
         throw new Error('No IPFS File Pin Service provider available yet.')
       }
 
+      const { page } = inObj
+
       const rpcData = {
-        endpoint: 'getPins'
+        endpoint: 'getPins',
+        page
       }
 
       // Generate a UUID for the call.
@@ -258,7 +265,7 @@ class IpfsFilesAdapter {
 
         cnt++
 
-      // Exit if data was returned, or the window for a response expires.
+        // Exit if data was returned, or the window for a response expires.
       } while (!dataFound && cnt < 10)
       // console.log(`dataFound: ${dataFound}, cnt: ${cnt}`)
 
@@ -268,6 +275,53 @@ class IpfsFilesAdapter {
       throw err
     }
   }
+
+  async pinClaim (inObj = {}) {
+    try {
+      // Throw an error if this IPFS node has not yet made a connection to a
+      // ipfs service provider.
+      const selectedProvider =
+        this.ipfs.ipfsCoordAdapter.state.selectedIpfsFileProvider
+      if (!selectedProvider) {
+        throw new Error('No IPFS File Provider Service is available yet. Try again in a few seconds.')
+      }
+
+      const { proofOfBurnTxid, cid, claimTxid, filename, address } = inObj
+
+      const rpcData = {
+        endpoint: 'pinClaim',
+        proofOfBurnTxid,
+        cid,
+        claimTxid,
+        filename,
+        address
+      }
+
+      // Generate a UUID for the call.
+      const rpcId = this.uid()
+
+      // Generate a JSON RPC command.
+      const cmd = this.jsonrpc.request(rpcId, 'file-pin', rpcData)
+      const cmdStr = JSON.stringify(cmd)
+      // console.log('cmdStr: ', cmdStr)
+
+      // Send the RPC command to selected wallet service.
+      const thisNode = this.ipfs.ipfsCoordAdapter.ipfsCoord.thisNode
+      await this.ipfs.ipfsCoordAdapter.ipfsCoord.useCases.peer.sendPrivateMessage(
+        selectedProvider,
+        cmdStr,
+        thisNode
+      )
+
+      // Wait for data to come back from the wallet service.
+      const data = await this.waitForRPCResponse(rpcId)
+
+      return data
+    } catch (err) {
+      console.error('Error in pinClaim()')
+      throw err
+    }
+  }
 }
 
 // module.exports = P2wdbAdapter

src/adapters/ipfs/ipfs.js

@@ -19,17 +19,20 @@ import { noise } from '@chainsafe/libp2p-noise'
 import { yamux } from '@chainsafe/libp2p-yamux'
 // import { bootstrap } from '@libp2p/bootstrap'
 // import { identifyService } from 'libp2p/identify'
-import { identify } from '@libp2p/identify'
-// import { circuitRelayServer, circuitRelayTransport } from 'libp2p/circuit-relay'
-import { circuitRelayServer } from '@libp2p/circuit-relay-v2'
+import { identify, identifyPush } from '@libp2p/identify'
+import { circuitRelayServer, circuitRelayTransport } from '@libp2p/circuit-relay-v2'
+// import { circuitRelayServer } from '@libp2p/circuit-relay-v2'
 import { gossipsub } from '@chainsafe/libp2p-gossipsub'
 import { webSockets } from '@libp2p/websockets'
 import { publicIpv4 } from 'public-ip'
 import { multiaddr } from '@multiformats/multiaddr'
-// import { webRTC } from '@libp2p/webrtc'
+import { webRTC, webRTCDirect } from '@libp2p/webrtc'
 import { keychain } from '@libp2p/keychain'
-import { defaultLogger } from '@libp2p/logger'
 import { unixfs } from '@helia/unixfs'
+// import { generateKeyPairFromSeed } from '@libp2p/crypto/keys'
+// import crypto from 'crypto'
+import { ping } from '@libp2p/ping'
+import { loadOrCreateSelfKey } from '@libp2p/config'
 
 // Local libraries
 import config from '../../../config/index.js'
@@ -64,8 +67,8 @@ class IpfsAdapter {
     this.createNode = this.createNode.bind(this)
     this.stop = this.stop.bind(this)
     this.ensureBlocksDir = this.ensureBlocksDir.bind(this)
+    // this.getPrivateKey = this.getPrivateKey.bind(this)
     this.getSeed = this.getSeed.bind(this)
-    this.getKeychain = this.getKeychain.bind(this)
   }
 
   // Start an IPFS node.
@@ -111,19 +114,6 @@ class IpfsAdapter {
     }
   }
 
-  async getKeychain (datastore) {
-    const keychainInit = {
-      pass: await this.getSeed()
-    }
-
-    const chain = this.keychain(keychainInit)({
-      datastore,
-      logger: defaultLogger()
-    })
-
-    return chain
-  }
-
   // This function creates an IPFS node using Helia.
   // It returns the node as an object.
   async createNode () {
@@ -132,44 +122,38 @@ class IpfsAdapter {
       const blockstore = new FsBlockstore(`${IPFS_DIR}/blockstore`)
       const datastore = new FsDatastore(`${IPFS_DIR}/datastore`)
 
-      // const keychainInit = {
-      //   pass: await this.getSeed()
-      // }
+      // Get the private key.
+      // const privateKey = await this.getPrivateKey()
+      // console.log('privateKey: ', privateKey)
 
       // Create an identity
-      let peerId
-      // console.log('this.keychain: ', this.keychain)
-      // const chain = this.keychain(keychainInit)({
-      //   datastore,
-      //   logger: defaultLogger()
-      // })
-      const chain = await this.getKeychain(datastore)
-      try {
-        peerId = await chain.exportPeerId('myKey')
-      } catch (err) {
-        await chain.createKey('myKey', 'Ed25519', 4096)
-        peerId = await chain.exportPeerId('myKey')
+      const keychainInit = {
+        selfKey: 'myKey',
+        pass: await this.getSeed()
       }
+      const privateKey = await loadOrCreateSelfKey(datastore, keychainInit)
 
       // Configure services
       const services = {
         identify: identify(),
-        pubsub: gossipsub({ allowPublishToZeroTopicPeers: true })
+        identifyPush: identifyPush(),
+        pubsub: gossipsub({ allowPublishToZeroTopicPeers: true }),
+        ping: ping(),
+        keychain: keychain(keychainInit)
       }
       if (this.config.isCircuitRelay) {
         console.log('Helia (IPFS) node IS configured as Circuit Relay')
         services.relay = circuitRelayServer({ // makes the node function as a relay server
           hopTimeout: 30 * 1000, // incoming relay requests must be resolved within this time limit
-          advertise: true,
           reservations: {
             maxReservations: 15, // how many peers are allowed to reserve relay slots on this server
             reservationClearInterval: 300 * 1000, // how often to reclaim stale reservations
             applyDefaultLimit: true, // whether to apply default data/duration limits to each relayed connection
             defaultDurationLimit: 2 * 60 * 1000, // the default maximum amount of time a relayed connection can be open for
-            defaultDataLimit: BigInt(2 << 7), // the default maximum number of bytes that can be transferred over a relayed connection
-            maxInboundHopStreams: 32, // how many inbound HOP streams are allow simultaneously
-            maxOutboundHopStreams: 64 // how many outbound HOP streams are allow simultaneously
-          }
+            defaultDataLimit: BigInt(2 << 7) // the default maximum number of bytes that can be transferred over a relayed connection
+          },
+          maxInboundHopStreams: 32, // how many inbound HOP streams are allow simultaneously
+          maxOutboundHopStreams: 64 // how many outbound HOP streams are allow simultaneously
         })
       } else {
         console.log('Helia (IPFS) node IS NOT configured as Circuit Relay')
@@ -177,28 +161,31 @@ class IpfsAdapter {
 
       const transports = [
         tcp(),
-        webSockets()
-        // circuitRelayTransport({
-        //   discoverRelays: 3,
-        //   reservationConcurrency: 3
-        // }),
-        // webRTC()
+        webSockets(),
+        circuitRelayTransport({
+          discoverRelays: 3,
+          reservationConcurrency: 3
+        }),
+        webRTC(),
+        webRTCDirect()
       ]
 
       // libp2p is the networking layer that underpins Helia
       const libp2p = await this.createLibp2p({
-        peerId,
+        // peerId,
+        privateKey,
         datastore,
         addresses: {
           listen: [
             '/ip4/127.0.0.1/tcp/0',
             `/ip4/0.0.0.0/tcp/${this.config.ipfsTcpPort}`,
             `/ip4/0.0.0.0/tcp/${this.config.ipfsWsPort}/ws`,
-            '/webrtc'
+            '/webrtc',
+            '/p2p-circuit'
           ]
         },
         transports,
-        connectionEncryption: [
+        connectionEncrypters: [
           noise()
         ],
         streamMuxers: [
@@ -244,6 +231,8 @@ class IpfsAdapter {
 
       !this.fs.existsSync(`${IPFS_DIR}/datastore`) && this.fs.mkdirSync(`${IPFS_DIR}/datastore`)
 
+      !this.fs.existsSync(`${IPFS_DIR}/datastore/pkcs8`) && this.fs.mkdirSync(`${IPFS_DIR}/datastore/pkcs8`)
+
       // !fs.existsSync(`${IPFS_DIR}/datastore/peers`) && fs.mkdirSync(`${IPFS_DIR}/datastore/peers`)
 
       return true
@@ -280,6 +269,48 @@ class IpfsAdapter {
       throw err
     }
   }
+
+  // Get the private key from disk, or generate a new one and save it,
+  // if it doesn't exist.
+  // async getPrivateKey () {
+  //   try {
+  //     const filename = `${IPFS_DIR}/privkey.json`
+
+  //     let privKeyHex
+  //     try {
+  //       // Try to read the JSON file containing the seed.
+  //       privKeyHex = await this.jsonFiles.readJSON(filename)
+  //       // console.log('saved privKeyHex: ', privKeyHex)
+  //     } catch (err) {
+  //       // Generate a new private key and save it to disk.
+
+  //       // Generate a new private key and save it to disk.
+  //       const randomBuffer = crypto.randomBytes(32)
+  //       // console.log('randomBuffer: ', randomBuffer)
+
+  //       privKeyHex = randomBuffer.toString('hex')
+  //       // console.log('new privKeyHex: ', privKeyHex)
+
+  //       // Save the newly generated seed
+  //       await this.jsonFiles.writeJSON(privKeyHex, filename)
+  //     }
+
+  //     // Convert the saved hex string to a buffer.
+  //     const privKeyBuf = Buffer.from(privKeyHex, 'hex')
+
+  //     // Convert the buffer to a Uint8Array 'seed'
+  //     const seed = new Uint8Array(privKeyBuf.buffer, privKeyBuf.byteOffset, privKeyBuf.byteLength)
+  //     // console.log('seed: ', seed)
+
+  //     // Generate a ED25519 key pair.
+  //     const privKey = await generateKeyPairFromSeed('Ed25519', seed)
+
+  //     return privKey
+  //   } catch (err) {
+  //     console.error('Error in adapters/ipfs/ipfs.js/getPrivateKey(): ', err)
+  //     throw err
+  //   }
+  // }
 }
 
 export default IpfsAdapter

src/controllers/index.js

@@ -23,6 +23,13 @@ class Controllers {
     this.useCases = new UseCases(localConfig)
     this.timerControllers = new TimerControllers({ adapters: this.adapters, useCases: this.useCases })
     this.config = config
+
+    // Bind 'this' object to all subfunction
+    this.initAdapters = this.initAdapters.bind(this)
+    this.initUseCases = this.initUseCases.bind(this)
+    this.attachRESTControllers = this.attachRESTControllers.bind(this)
+    this.attachControllers = this.attachControllers.bind(this)
+    this.attachRPCControllers = this.attachRPCControllers.bind(this)
   }
 
   // Spin up any adapter libraries that have async startup needs.

src/controllers/rest-api/index.js

@@ -16,6 +16,7 @@ import IpfsRESTController from './ipfs/index.js'
 import P2wdbRESTController from './p2wdb/index.js'
 import PriceRESTController from './price/index.js'
 import config from '../../../config/index.js'
+import UsageRESTController from './usage/index.js'
 
 class RESTControllers {
   constructor (localConfig = {}) {
@@ -33,6 +34,9 @@ class RESTControllers {
       )
     }
 
+    // Bind 'this' object to all subfunctions.
+    this.attachRESTControllers = this.attachRESTControllers.bind(this)
+
     // Encapsulate dependencies
     this.config = config
   }
@@ -76,6 +80,10 @@ class RESTControllers {
     // Attach the REST API Controllers associated with the /price route
     const priceRESTController = new PriceRESTController(dependencies)
     priceRESTController.attach(app)
+
+    // Attach the REST API Controllers associated with the /usage route
+    const usageRESTController = new UsageRESTController(dependencies)
+    usageRESTController.attach(app)
   }
 }
 

src/controllers/rest-api/ipfs/controller.js

@@ -39,6 +39,9 @@ class IpfsRESTControllerLib {
     this.getService = this.getService.bind(this)
     this.getFileInfo = this.getFileInfo.bind(this)
     this.getPins = this.getPins.bind(this)
+    this.cid2json = this.cid2json.bind(this)
+    this.downloadFile = this.downloadFile.bind(this)
+    this.pinClaim = this.pinClaim.bind(this)
   }
 
   /**
@@ -164,12 +167,34 @@ class IpfsRESTControllerLib {
       )
       ctx.body = readStream
     } catch (err) {
-      // wlogger.error('Error in ipfs/controller.js/viewFile(): ', err)
       console.log('Error in ipfs/controller.js/viewFile(): ', err)
       this.handleError(ctx, err)
     }
   }
 
+  /**
+   * @api {get} /ipfs/download/:cid Download a file via its IPFS CID
+   * @apiPermission public
+   * @apiName GetCidDownload
+   * @apiGroup REST IPFS
+   * @apiDescription Download a file via its IPFS CID. Returns a readable stream.
+   *
+   * @apiExample Example usage:
+   * curl -H "Content-Type: application/json" -X GET localhost:5001/ipfs/download/bafkreieaqtdhfywyddomswogynzymukosqqgqo7lkt5lch2zwfnc55m6om
+   */
+  async downloadFile (ctx) {
+    try {
+      const { cid } = ctx.params
+
+      const { readStream } = await this.useCases.ipfs.downloadCid({ cid })
+
+      ctx.body = readStream
+    } catch (err) {
+      console.log('Error in ipfs/controller.js/downloadFile(): ', err)
+      this.handleError(ctx, err)
+    }
+  }
+
   /**
    * @api {get} /ipfs/service Get the IPFS ID for the File Pin service
    * @apiPermission public
@@ -191,7 +216,7 @@ class IpfsRESTControllerLib {
         selectedIpfsFileProvider
       }
     } catch (err) {
-      // wlogger.error('Error in ipfs/controller.js/viewFile(): ', err)
+      // wlogger.error('Error in ipfs/controller.js/getService(): ', err)
       console.log('Error in ipfs/controller.js/getService(): ', err)
       this.handleError(ctx, err)
     }
@@ -219,8 +244,7 @@ class IpfsRESTControllerLib {
 
       ctx.body = metadata
     } catch (err) {
-      // wlogger.error('Error in ipfs/controller.js/viewFile(): ', err)
-      console.log('Error in ipfs/controller.js/getService(): ', err)
+      console.log('Error in ipfs/controller.js/getFileInfo(): ', err)
       this.handleError(ctx, err)
     }
   }
@@ -238,23 +262,73 @@ class IpfsRESTControllerLib {
    */
   async getPins (ctx) {
     try {
-      // const { cid } = ctx.params
+      const { page } = ctx.params
 
       const ipfsFiles = this.adapters.ipfsFiles
 
-      const pinData = await ipfsFiles.getPins()
+      const pinData = await ipfsFiles.getPins({ page })
       console.log('getPins() pinData: ', pinData)
 
       ctx.body = pinData
     } catch (err) {
-      // wlogger.error('Error in ipfs/controller.js/viewFile(): ', err)
       console.log('Error in ipfs/controller.js/getPins(): ', err)
       this.handleError(ctx, err)
     }
   }
 
+  /**
+   * @api {get} /ipfs/cid2json/:cid Given a CID, retrieve a JSON object
+   * @apiPermission public
+   * @apiName GetCid2Json
+   * @apiGroup REST IPFS
+   * @apiDescription Given a CID, retrieve a JSON object.
+   * If the CID does not resolves to a JSON file, then an error is thrown.
+   *
+   * @apiExample Example usage:
+   * curl -H "Content-Type: application/json" -X GET localhost:5015/ipfs/cid2json/bafkreigbgrvpagnmrqz2vhofifrqobigsxkdvnvikf5iqrkrbwrzirazhm
+   *
+   */
+  async cid2json (ctx) {
+    try {
+      const { cid } = ctx.params
+
+      const json = await this.useCases.ipfs.cid2json({ cid })
+
+      ctx.body = json
+    } catch (err) {
+      console.log('Error in ipfs/controller.js/cid2json(): ', err.message)
+      this.handleError(ctx, err)
+    }
+  }
+
+  /**
+   * @api {post} /ipfs/pin-claim Process pin claim.
+   * @apiPermission public
+   * @apiName PinClaim
+   * @apiGroup REST IPFS
+   * @apiDescription Process pin claim.
+   *
+   * @apiExample Example usage:
+   * curl -H "Content-Type: application/json" -X POST -d '{ "proofOfBurnTxid": "be4b63156c93f58ed311d403d9f756deda9abbc81d0fef8fbe5d769538b4261c", "cid": "bafybeied3zdwdiro7fqytyha2yfband4lwcrtozmf6shynylt3kexh26dq", "claimTxid": "c71e2f2cdf8658d90c61ac6183b8ffeeb359779807b317386044705d8352f0f2", "filename": "mutable-67ccefcca67097473e78ca10.json", "address": "bitcoincash:qqs2wrahl6azn9qdyrmp9ygeejqvzr8ruv7e9m30fr" }' http://localhost:5001/ipfs/pin-claim   *
+   */
+  async pinClaim (ctx) {
+    try {
+      const body = ctx.request.body
+
+      const result = await this.useCases.ipfs.pinClaim(body)
+
+      ctx.body = result
+    } catch (err) {
+      console.log('Error in ipfs/controller.js/cid2json(): ', err.message)
+      this.handleError(ctx, err)
+    }
+  }
+
   // DRY error handler
   handleError (ctx, err) {
+    // console.log('handleError() err.status: ', err.status)
+    // console.log('handleError() err.message: ', err.message)
+
     // If an HTTP status is specified by the buisiness logic, use that.
     if (err.status) {
       if (err.message) {
@@ -263,6 +337,7 @@ class IpfsRESTControllerLib {
         ctx.throw(err.status)
       }
     } else {
+      // console.log(`handleError() err.message: ${err.message}`)
       // By default use a 422 error if the HTTP status is not specified.
       ctx.throw(422, err.message)
     }

src/controllers/rest-api/ipfs/index.js

@@ -57,10 +57,12 @@ class IpfsRouter {
     this.router.post('/connect', this.ipfsRESTController.connect)
     this.router.get('/node', this.ipfsRESTController.getThisNode)
     this.router.get('/view/:cid', this.ipfsRESTController.viewFile)
+    this.router.get('/download/:cid', this.ipfsRESTController.downloadFile)
     this.router.get('/service', this.ipfsRESTController.getService)
     this.router.get('/file-info/:cid', this.ipfsRESTController.getFileInfo)
-    this.router.get('/pins', this.ipfsRESTController.getPins)
-
+    this.router.get('/pins/:page', this.ipfsRESTController.getPins)
+    this.router.get('/cid2json/:cid', this.ipfsRESTController.cid2json)
+    this.router.post('/pin-claim', this.ipfsRESTController.pinClaim)
     // Attach the Controller routes to the Koa app.
     app.use(this.router.routes())
     app.use(this.router.allowedMethods())

src/controllers/rest-api/usage/controller.js

@@ -0,0 +1,119 @@
+/*
+  REST API Controller library for the /usage route
+*/
+
+// Global npm libraries
+
+// Local libraries
+import wlogger from '../../../adapters/wlogger.js'
+
+class UsageRESTControllerLib {
+  constructor (localConfig = {}) {
+    // Dependency Injection.
+    this.adapters = localConfig.adapters
+    if (!this.adapters) {
+      throw new Error(
+        'Instance of Adapters library required when instantiating /usage REST Controller.'
+      )
+    }
+    this.useCases = localConfig.useCases
+    if (!this.useCases) {
+      throw new Error(
+        'Instance of Use Cases library required when instantiating /usage REST Controller.'
+      )
+    }
+
+    // Encapsulate dependencies
+
+    // Bind 'this' object to all subfunctions
+    this.getStatus = this.getStatus.bind(this)
+    this.getTopIps = this.getTopIps.bind(this)
+    this.getTopEndpoints = this.getTopEndpoints.bind(this)
+    this.handleError = this.handleError.bind(this)
+  }
+
+  /**
+   * @api {get} /usage Get status on IPFS infrastructure
+   * @apiPermission public
+   * @apiName GetUsageStatus
+   * @apiGroup REST Usage
+   *
+   * @apiExample Example usage:
+   * curl -H "Content-Type: application/json" -X GET localhost:5020/usage
+   *
+   */
+  getStatus (ctx) {
+    try {
+      // const status = await this.adapters.ipfs.getStatus()
+      const status = this.useCases.usage.getRestSummary()
+
+      ctx.body = { status }
+    } catch (err) {
+      wlogger.error('Error in usage/controller.js/getStatus(): ')
+      // ctx.throw(422, err.message)
+      this.handleError(ctx, err)
+    }
+  }
+
+  /**
+   * @api {get} /usage/ips Get top IP addresses consuming the REST API
+   * @apiPermission public
+   * @apiName GetUsageIPs
+   * @apiGroup REST Usage
+   *
+   * @apiExample Example usage:
+   * curl -H "Content-Type: application/json" -X GET localhost:5020/usage/ips
+   *
+   */
+  getTopIps (ctx) {
+    try {
+      const ips = this.useCases.usage.getTopIps()
+
+      ctx.body = { ips }
+    } catch (err) {
+      wlogger.error('Error in usage/controller.js/getTopIps(): ')
+      // ctx.throw(422, err.message)
+      this.handleError(ctx, err)
+    }
+  }
+
+  /**
+   * @api {get} /usage/endpoints Get top endpoints consumed from the REST API
+   * @apiPermission public
+   * @apiName GetUsageEndpoints
+   * @apiGroup REST Usage
+   *
+   * @apiExample Example usage:
+   * curl -H "Content-Type: application/json" -X GET localhost:5020/usage/endpoints
+   *
+   */
+  getTopEndpoints (ctx) {
+    try {
+      const endpoints = this.useCases.usage.getTopEndpoints()
+
+      ctx.body = { endpoints }
+    } catch (err) {
+      wlogger.error('Error in usage/controller.js/getTopEndpoints(): ')
+      // ctx.throw(422, err.message)
+      this.handleError(ctx, err)
+    }
+  }
+
+  // DRY error handler
+  handleError (ctx, err) {
+    // If an HTTP status is specified by the buisiness logic, use that.
+    if (err.status) {
+      if (err.message) {
+        ctx.throw(err.status, err.message)
+      } else {
+        ctx.throw(err.status)
+      }
+    } else {
+      // By default use a 422 error if the HTTP status is not specified.
+      ctx.throw(422, err.message)
+    }
+  }
+}
+
+// module.exports = IpfsRESTControllerLib
+export default UsageRESTControllerLib

src/controllers/rest-api/usage/index.js

@@ -0,0 +1,65 @@
+/*
+  REST API library for the /usage route.
+*/
+
+// Public npm libraries.
+import Router from 'koa-router'
+
+// Local libraries.
+import UsageRESTControllerLib from './controller.js'
+import Validators from '../middleware/validators.js'
+
+// let _this
+
+class UsageRouter {
+  constructor (localConfig = {}) {
+    // Dependency Injection.
+    this.adapters = localConfig.adapters
+    if (!this.adapters) {
+      throw new Error(
+        'Instance of Adapters library required when instantiating IPFS REST Controller.'
+      )
+    }
+    this.useCases = localConfig.useCases
+    if (!this.useCases) {
+      throw new Error(
+        'Instance of Use Cases library required when instantiating IPFS REST Controller.'
+      )
+    }
+
+    const dependencies = {
+      adapters: this.adapters,
+      useCases: this.useCases
+    }
+
+    // Encapsulate dependencies.
+    this.usageRESTController = new UsageRESTControllerLib(dependencies)
+    this.validators = new Validators()
+
+    // Instantiate the router and set the base route.
+    const baseUrl = '/usage'
+    this.router = new Router({ prefix: baseUrl })
+
+    // _this = this
+  }
+
+  attach (app) {
+    if (!app) {
+      throw new Error(
+        'Must pass app object when attaching REST API controllers.'
+      )
+    }
+
+    // Define the routes and attach the controller.
+    this.router.get('/', this.usageRESTController.getStatus)
+    this.router.get('/ips', this.usageRESTController.getTopIps)
+    this.router.get('/endpoints', this.usageRESTController.getTopEndpoints)
+
+    // Attach the Controller routes to the Koa app.
+    app.use(this.router.routes())
+    app.use(this.router.allowedMethods())
+  }
+}
+
+// module.exports = BchRouter
+export default UsageRouter

src/controllers/timer-controllers.js

@@ -28,6 +28,7 @@ class TimerControllers {
 
     // Bind 'this' object to all subfunctions.
     this.exampleTimerFunc = this.exampleTimerFunc.bind(this)
+    this.cleanUsage = this.cleanUsage.bind(this)
 
     // this.startTimers()
   }
@@ -36,13 +37,15 @@ class TimerControllers {
   startTimers () {
     // Any new timer control functions can be added here. They will be started
     // when the server starts.
-    this.optimizeWalletHandle = setInterval(this.exampleTimerFunc, 60000 * 10)
+    this.optimizeWalletHandle = setInterval(this.exampleTimerFunc, 60000 * 60)
+    this.cleanUsageHandle = setInterval(this.cleanUsage, 60000 * 60) // 1 hour
 
     return true
   }
 
   stopTimers () {
     clearInterval(this.optimizeWalletHandle)
+    clearInterval(this.cleanusageHandle)
   }
 
   // Replace this example function with your own timer handler.
@@ -60,6 +63,20 @@ class TimerControllers {
       return false
     }
   }
+
+  // Clean the usage state so that stats reflect the last 24 hours.
+  cleanUsage () {
+    try {
+      this.useCases.usage.cleanUsage()
+
+      return true
+    } catch (err) {
+      console.error('Error in time-controller.js/cleanUsage(): ', err)
+
+      // Note: Do not throw an error. This is a top-level function.
+      return false
+    }
+  }
 }
 
 export default TimerControllers

src/use-cases/index.js

@@ -7,6 +7,7 @@
 // Local libraries
 import UserUseCases from './user.js'
 import IpfsUseCases from './ipfs-use-cases.js'
+import { UsageUseCases } from './usage-use-cases.js'
 
 class UseCases {
   constructor (localConfig = {}) {
@@ -26,6 +27,7 @@ class UseCases {
     // console.log('use-cases/index.js localConfig: ', localConfig)
     this.user = new UserUseCases(localConfig)
     this.ipfs = new IpfsUseCases(localConfig)
+    this.usage = new UsageUseCases(localConfig)
   }
 
   // Run any startup Use Cases at the start of the app.

src/use-cases/ipfs-use-cases.js

@@ -9,6 +9,7 @@
 // import { exporter } from 'ipfs-unixfs-exporter'
 import { Duplex } from 'stream'
 import PSFFPP from 'psffpp'
+import { CID } from 'multiformats'
 
 // Local libraries
 // import PinEntity from '../entities/pin.js'
@@ -28,11 +29,15 @@ class IpfsUseCases {
 
     // Encapsulate dependencies
     this.psffpp = null // placeholder
+    this.CID = CID
 
     // Bind 'this' object to all class subfunctions.
     this.downloadCid = this.downloadCid.bind(this)
     // this.downloadCid2 = this.downloadCid2.bind(this)
     this.getWritePrice = this.getWritePrice.bind(this)
+    this.getCidMetadata = this.getCidMetadata.bind(this)
+    this.cid2json = this.cid2json.bind(this)
+    this.pinClaim = this.pinClaim.bind(this)
 
     // State
     this.lastWritePriceUpdate = null // Used to periodically update write price.
@@ -42,7 +47,7 @@ class IpfsUseCases {
   // Returns a readable stream.
   async downloadCid (inObj = {}) {
     try {
-      const { cid } = inObj
+      let { cid } = inObj
 
       if (!cid) throw new Error('CID is undefined')
 
@@ -63,6 +68,47 @@ class IpfsUseCases {
 
       const helia = this.adapters.ipfs.ipfs
 
+      const cidClass = this.CID.parse(cid)
+
+      // Download the file from other nodes.
+      await helia.blockstore.get(cidClass)
+
+      // list cid content, to dermine if this is a file-based or directory-based CID.
+      const contentArray = []
+      for await (const file of helia.fs.ls(cid)) {
+        contentArray.push(file)
+      }
+
+      // Handle directory-based CIDs. This is used by Token Tiger for mutable and immutable token data.
+      /**
+      *  If the cid is a directory
+       * The next block of code sends a html page with a list of links with the file names into the directory.
+       * Skipping this code delivers directly the first file detected in the directory.
+       */
+      const isDir = contentArray[0].path.match('/') // TODO : looking for a better way to detect if is a directory
+      // 'listDir' is a flag to ignore this code on /download endpoint.
+      if (isDir) {
+        console.log('This CID is a directory. contentArray[0]: ', contentArray[0])
+        cid = `${cid}/${contentArray[0].name}`
+
+        // throw new Error('CID is a directory. Not supported yet.')
+        // const stream = new Stream.Readable({ read () { } })
+        // for (let i = 0; i < contentArray.length; i++) {
+        //   const cont = contentArray[i]
+        //   // List all paths excluding root path.
+        //   if (cont.path !== cid) {
+        //     // Add links to the gateway with the format  cid/:filename
+        //     stream.push(`<a href='${this.config.domainName}/ipfs/view/${cid}/${cont.name}' >/${cont.name} ( CID:  ${cont.cid} )</a><hr />`)
+        //   }
+        // }
+
+        // stream.push(null)
+        // // return fileName as html because the controller the library <mime.lookup> sends it as html
+        // return { readStream: stream }
+      } else {
+        console.log('This CID is not a directory.')
+      }
+
       // Convert the file to a Buffer.
       const fileChunks = []
       for await (const chunk of helia.fs.cat(cid)) {
@@ -151,6 +197,107 @@ class IpfsUseCases {
     }
   }
 
+  // Given a CID, this function will retrieve a JSON object from the
+  // ipfs-file-pin-service, using the IPFS JSON-RPC.
+  async cid2json (inObj = {}) {
+    try {
+      const { cid } = inObj
+      console.log('cid2json() cid: ', cid)
+
+      // Throw an error if ipfs-bch-wallet-consumer has not yet connected to an instance of ipfs-file-pin-service.
+      const ipfsFileProvider = this.adapters.ipfs.ipfsCoordAdapter.state.selectedIpfsFileProvider
+      if (!ipfsFileProvider) {
+        throw new Error('No IPFS File Provider Service is available yet. Try again in a few seconds.')
+      }
+
+      // Throw an error if ipfs-bch-wallet-consumer can not communicate with the ipfs-file-pin-service.
+      const ipfsFiles = this.adapters.ipfsFiles
+      const metadata = await ipfsFiles.getFileMetadata({ cid })
+      if (metadata.success === false) {
+        throw new Error(`Could not communicate with instance of ipfs-file-pin-service ${ipfsFileProvider}. Try again in a few seconds.`)
+      }
+
+      // Throw an error if the file is not pinned.
+      const fileMetadata = metadata.fileMetadata
+      if (!fileMetadata.dataPinned) {
+        throw new Error(`CID ${cid} has not been pinned by ipfs-file-pin-service instance ${ipfsFileProvider}`)
+      }
+      // console.log('fileMetadata: ', fileMetadata)
+
+      // Throw an error if this is not a JSON file
+      const filename = fileMetadata.filename
+
+      if (!filename.endsWith('.json')) {
+        throw new Error(`CID ${cid} does not resolve to a JSON file.`)
+      }
+
+      // Retrieve the CID content and store it in a Buffer.
+      const helia = this.adapters.ipfs.ipfs
+      const fileChunks = []
+
+      // list cid content. This is used to determine if the CID is a file or a directory.
+      const contentArray = []
+      for await (const file of helia.fs.ls(cid)) {
+        contentArray.push(file)
+      }
+      // console.log('contentArray: ', contentArray)
+
+      try {
+        // Handle CIDs that are files.
+        for await (const chunk of helia.fs.cat(cid)) {
+          fileChunks.push(chunk)
+        }
+      } catch (err) {
+        // Extra logic here to look at the filename of the first file and make sure
+        // it ends in .json.
+        const name = contentArray[0].name
+        if (!name.endsWith('.json')) {
+          throw new Error(`CID ${cid} is a directory and its first file does not resolve to a valid JSON file.`)
+        }
+
+        // Handle CIDs that are directorys containing a JSON file. (TokenTiger.com tokens)
+        for await (const chunk of helia.fs.cat(`${cid}/${name}`)) {
+          fileChunks.push(chunk)
+        }
+      }
+
+      const fileBuf = Buffer.concat(fileChunks)
+
+      // Convert the Buffer into a string.
+      const jsonStr = fileBuf.toString()
+
+      // Parse the string into a JSON object.
+      let json = null
+      try {
+        json = JSON.parse(jsonStr)
+      } catch (err) {
+        throw new Error(`CID ${cid} does not resolve to a valid JSON object.`)
+      }
+
+      return {
+        success: true,
+        json
+      }
+    } catch (err) {
+      console.error('Error in ipfs-use-cases.js/cid2json(): ', err.message)
+      throw err
+    }
+  }
+
+  async pinClaim (inObj = {}) {
+    try {
+      // Throw an error if ipfs-bch-wallet-consumer can not communicate with the ipfs-file-pin-service.
+      const metadata = await this.adapters.ipfsFiles.pinClaim(inObj)
+
+      return {
+        success: metadata.success,
+        message: metadata.message
+      }
+    } catch (err) {
+      console.error('Error in ipfs-use-cases.js/pinClaim(): ', err)
+      throw err
+    }
+  }
   // async downloadCid2 (inObj = {}) {
   //   try {
   //     const { cid } = inObj

src/use-cases/usage-use-cases.js

@@ -0,0 +1,136 @@
+/*
+  Use Case library for tracking usage. This library contains business logic
+  for tracking the usage of REST API and JSON RPC calls. This library is used
+  by admins to keep an eye on how many API calls were made in a 24-hour and
+  1-hour time period.
+*/
+
+// This global variable is used to share data between the REST middleware and
+// the Usage Use Case class instance.
+let restCalls = []
+
+class UsageUseCases {
+  constructor (localConfig = {}) {
+    // console.log('User localConfig: ', localConfig)
+    this.adapters = localConfig.adapters
+    if (!this.adapters) {
+      throw new Error(
+        'Instance of adapters must be passed in when instantiating Usage Use Cases library.'
+      )
+    }
+
+    // Bind 'this' object to all subfunctions
+    this.cleanUsage = this.cleanUsage.bind(this)
+    this.getRestSummary = this.getRestSummary.bind(this)
+    this.getTopIps = this.getTopIps.bind(this)
+    this.getTopEndpoints = this.getTopEndpoints.bind(this)
+
+    // State
+  }
+
+  // Clean up the state by removing entries that are older than 24 hours. This
+  // ensures stats reflect only the last 24 hours.
+  // This function is called by a Timer Controller.
+  cleanUsage () {
+    try {
+      const now = new Date()
+      const twentyFourHoursAgo = now.getTime() - (60000 * 60 * 24)
+
+      restCalls = restCalls.filter(x => x.timestamp > twentyFourHoursAgo)
+      return restCalls
+    } catch (err) {
+      console.error('Error in usage-use-cases.js/cleanUsage()')
+      throw err
+    }
+  }
+
+  // Track the calls to a REST API
+  getRestSummary (inObj = {}) {
+    try {
+      console.log(`getRestSummary(): There have been ${restCalls.length} REST calls`)
+
+      return restCalls.length
+    } catch (err) {
+      console.error('Error in usage-use-cases.js/getRestSummary()')
+      throw err
+    }
+  }
+
+  // Get the top 20 IP addresses from the stats.
+  getTopIps () {
+    try {
+      const ips = restCalls.map(x => x.ip)
+      // Create a Map to count occurrences of each IP address string
+      const countMap = new Map()
+      ips.forEach(ip => {
+        countMap.set(ip, (countMap.get(ip) || 0) + 1)
+      })
+
+      // Convert the Map into an array of objects with `str` and `cnt` properties
+      const result = Array.from(countMap, ([ip, cnt]) => ({ ip, cnt }))
+
+      // Sort the results by the `cnt` property in descending order
+      result.sort((a, b) => b.cnt - a.cnt)
+
+      // Ensure the result has at most 20 elements
+      return result.slice(0, 20)
+    } catch (err) {
+      console.error('Error in usage-use-cases.js/getTopIps()')
+      throw err
+    }
+  }
+
+  // Get the top 20 most consumed endpoints.
+  getTopEndpoints () {
+    try {
+      const endpoints = restCalls.map(x => `${x.method} ${x.url}`)
+
+      // Create a Map to count occurrences of each IP address string
+      const countMap = new Map()
+      endpoints.forEach(endpoint => {
+        countMap.set(endpoint, (countMap.get(endpoint) || 0) + 1)
+      })
+
+      // Convert the Map into an array of objects with `str` and `cnt` properties
+      const result = Array.from(countMap, ([endpoint, cnt]) => ({ endpoint, cnt }))
+
+      // Sort the results by the `cnt` property in descending order
+      result.sort((a, b) => b.cnt - a.cnt)
+
+      // Ensure the result has at most 20 elements
+      return result.slice(0, 20)
+    } catch (err) {
+      console.error('Error in usage-use-cases.js/getTopEndpoints()')
+      throw err
+    }
+  }
+}
+
+// This Koa middleware is called any time there is a REST API. It logs the
+// details from the request object.
+function usageMiddleware () {
+  return async (ctx, next) => {
+    try {
+      await next()
+
+      // console.log('ctx.request: ', ctx.request)
+      const now = new Date()
+
+      const reqObj = {
+        ip: ctx.request.ip,
+        url: ctx.request.url,
+        method: ctx.request.method,
+        timestamp: now.getTime()
+      }
+      // console.log('reqObj: ', reqObj)
+
+      restCalls.push(reqObj)
+    } catch (err) {
+      ctx.status = err.status || 500
+      ctx.body = err.message
+      ctx.app.emit('error', err, ctx)
+    }
+  }
+};
+
+export { UsageUseCases, usageMiddleware, restCalls }

test/e2e/automated/a10-usage.rest-e2e.js

@@ -0,0 +1,74 @@
+/*
+End-to-end tests for /usage endpoints.
+*/
+
+import config from '../../../config/index.js'
+import { assert } from 'chai'
+import axios from 'axios'
+import sinon from 'sinon'
+import util from 'util'
+
+util.inspect.defaultOptions = { depth: 1 }
+
+const LOCALHOST = `http://localhost:${config.port}`
+
+let sandbox
+
+describe('Usage', () => {
+  beforeEach(() => {
+    sandbox = sinon.createSandbox()
+  })
+
+  afterEach(() => sandbox.restore())
+
+  describe('GET /usage', () => {
+    it('should return usage status', async () => {
+      try {
+        const options = {
+          method: 'get',
+          url: `${LOCALHOST}/usage`
+        }
+
+        const result = await axios(options)
+
+        assert.property(result.data, 'status')
+      } catch (err) {
+        assert(false, 'Unexpected result')
+      }
+    })
+  })
+
+  describe('GET /usage/ips', () => {
+    it('should return ips', async () => {
+      try {
+        const options = {
+          method: 'get',
+          url: `${LOCALHOST}/usage/ips`
+        }
+
+        const result = await axios(options)
+
+        assert.property(result.data, 'ips')
+      } catch (err) {
+        assert(false, 'Unexpected result')
+      }
+    })
+  })
+
+  describe('GET /usage/endpoints', () => {
+    it('should return ips', async () => {
+      try {
+        const options = {
+          method: 'get',
+          url: `${LOCALHOST}/usage/endpoints`
+        }
+
+        const result = await axios(options)
+
+        assert.property(result.data, 'endpoints')
+      } catch (err) {
+        assert(false, 'Unexpected result')
+      }
+    })
+  })
+})

test/unit/adapters/ipfs.adapter.unit.js

@@ -6,7 +6,7 @@
 import { assert } from 'chai'
 import sinon from 'sinon'
 import cloneDeep from 'lodash.clonedeep'
-import { peerIdFromString } from '@libp2p/peer-id'
+// import { peerIdFromString } from '@libp2p/peer-id'
 
 // Local libraries
 import IPFSLib from '../../../src/adapters/ipfs/ipfs.js'
@@ -165,17 +165,17 @@ describe('#IPFS-adapter', () => {
       uut.config.isCircuitRelay = false
 
       // Mock dependencies and force desired code path.
-      let beenCalled = false
-      sandbox.stub(uut, 'getKeychain').resolves({
-        exportPeerId: async () => {
-          if (!beenCalled) {
-            beenCalled = true
-            throw new Error('test error')
-          }
-          return peerIdFromString('12D3KooWSXF1PnEfiA8bCG8SJduCvzdwHtvhVPK4WC6zzDoto2XP')
-        },
-        createKey: async () => {}
-      })
+      // const beenCalled = false
+      // sandbox.stub(uut, 'getKeychain').resolves({
+      //   exportPeerId: async () => {
+      //     if (!beenCalled) {
+      //       beenCalled = true
+      //       throw new Error('test error')
+      //     }
+      //     return peerIdFromString('12D3KooWSXF1PnEfiA8bCG8SJduCvzdwHtvhVPK4WC6zzDoto2XP')
+      //   },
+      //   createKey: async () => {}
+      // })
       sandbox.stub(uut, 'createLibp2p').resolves()
       sandbox.stub(uut, 'createHelia').resolves({})
 

test/unit/controllers/rest-api/ipfs/ipfs.rest.controller.unit.js

@@ -248,4 +248,247 @@ describe('#IPFS REST API', () => {
       assert.property(ctx.body, 'thisNode')
     })
   })
+  describe('#viewFile', () => {
+    it('should return 422 status on biz logic error', async () => {
+      try {
+        // Force an error
+        ctx.params = {
+          cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy'
+        }
+        sandbox.stub(uut.useCases.ipfs, 'downloadCid').throws(new Error('test error'))
+        uut.adapters.ipfs.ipfsCoordAdapter = {}
+
+        ctx.request.body = {}
+
+        await uut.viewFile(ctx)
+
+        assert.fail('Unexpected result')
+      } catch (err) {
+        // console.log('err: ', err)
+        assert.equal(err.status, 422)
+        assert.include(err.message, 'test error')
+      }
+    })
+
+    it('should return 200 status on success', async () => {
+      ctx.params = {
+        cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy'
+      }
+      // Mock dependencies
+      sandbox.stub(uut.useCases.ipfs, 'downloadCid').resolves({ success: true, readStream: 'readStream' })
+
+      uut.adapters.ipfs.ipfsCoordAdapter = {
+        ipfsCoord: {
+          thisNode: {}
+        }
+      }
+
+      ctx.request.body = {}
+
+      await uut.viewFile(ctx)
+
+      assert.exists(ctx.body)
+    })
+  })
+  describe('#downloadFile', () => {
+    it('should return 422 status on biz logic error', async () => {
+      try {
+        ctx.params = {
+          cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy'
+        }
+        // Force an error
+        sandbox.stub(uut.useCases.ipfs, 'downloadCid').throws(new Error('test error'))
+        uut.adapters.ipfs.ipfsCoordAdapter = {}
+
+        ctx.request.body = {}
+
+        await uut.downloadFile(ctx)
+
+        assert.fail('Unexpected result')
+      } catch (err) {
+        // console.log('err: ', err)
+        assert.equal(err.status, 422)
+        assert.include(err.message, 'test error')
+      }
+    })
+
+    it('should return 200 status on success', async () => {
+      ctx.params = {
+        cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy'
+      }
+      // Mock dependencies
+      sandbox.stub(uut.useCases.ipfs, 'downloadCid').resolves({ success: true, readStream: 'readStream' })
+
+      uut.adapters.ipfs.ipfsCoordAdapter = {
+        ipfsCoord: {
+          thisNode: {}
+        }
+      }
+
+      ctx.request.body = {}
+
+      await uut.downloadFile(ctx)
+
+      assert.exists(ctx.body)
+    })
+  })
+  describe('#getService', () => {
+    it('should return 422 status on biz logic error', async () => {
+      try {
+        // Force an error
+        uut.adapters.ipfs.ipfsCoordAdapter = {}
+
+        ctx.request.body = {}
+
+        await uut.getService(ctx)
+
+        assert.fail('Unexpected result')
+      } catch (err) {
+        // console.log('err: ', err)
+        assert.equal(err.status, 422)
+        assert.include(err.message, 'Cannot read properties of undefined')
+      }
+    })
+
+    it('should return 200 status on success', async () => {
+      // Mock dependencies
+
+      uut.adapters.ipfs.ipfsCoordAdapter = {
+        state: {
+          selectedIpfsFileProvider: 'provider'
+        }
+      }
+
+      ctx.request.body = {}
+
+      await uut.getService(ctx)
+
+      assert.isTrue(ctx.body.success)
+    })
+  })
+  describe('#getFileInfo', () => {
+    it('should return 422 status on biz logic error', async () => {
+      try {
+        ctx.params = {
+          cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy'
+        }
+        sandbox.stub(uut.adapters.ipfsFiles, 'getFileMetadata').throws(new Error('test error'))
+
+        ctx.request.body = {}
+
+        await uut.getFileInfo(ctx)
+
+        assert.fail('Unexpected result')
+      } catch (err) {
+        // console.log('err: ', err)
+        assert.equal(err.status, 422)
+        assert.include(err.message, 'test error')
+      }
+    })
+
+    it('should return 200 status on success', async () => {
+      ctx.params = {
+        cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy'
+      }
+      // Mock dependencies
+      sandbox.stub(uut.adapters.ipfsFiles, 'getFileMetadata').resolves({ success: true, filename: 'filename' })
+
+      ctx.request.body = {}
+
+      await uut.getFileInfo(ctx)
+
+      assert.isTrue(ctx.body.success)
+    })
+  })
+
+  describe('#getPins', () => {
+    it('should return 422 status on biz logic error', async () => {
+      try {
+        sandbox.stub(uut.adapters.ipfsFiles, 'getPins').throws(new Error('test error'))
+
+        ctx.request.body = {}
+        ctx.params = { page: 1 }
+
+        await uut.getPins(ctx)
+
+        assert.fail('Unexpected result')
+      } catch (err) {
+        assert.equal(err.status, 422)
+        assert.include(err.message, 'test error')
+      }
+    })
+
+    it('should return 200 status on success', async () => {
+      // Mock dependencies
+      sandbox.stub(uut.adapters.ipfsFiles, 'getPins').resolves({ success: true })
+
+      ctx.request.body = {}
+      ctx.params = { page: 1 }
+
+      await uut.getPins(ctx)
+
+      assert.isTrue(ctx.body.success)
+    })
+  })
+
+  describe('#cid2json', () => {
+    it('should return 422 status on biz logic error', async () => {
+      try {
+        ctx.params = {
+          cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy'
+        }
+        sandbox.stub(uut.useCases.ipfs, 'cid2json').throws(new Error('test error'))
+
+        ctx.request.body = {}
+
+        await uut.cid2json(ctx)
+
+        assert.fail('Unexpected result')
+      } catch (err) {
+        assert.equal(err.status, 422)
+        assert.include(err.message, 'test error')
+      }
+    })
+
+    it('should return 200 status on success', async () => {
+      ctx.params = {
+        cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy'
+      }
+      // Mock dependencies
+      sandbox.stub(uut.useCases.ipfs, 'cid2json').resolves({ success: true })
+
+      ctx.request.body = {}
+
+      await uut.cid2json(ctx)
+
+      assert.isTrue(ctx.body.success)
+    })
+  })
+  describe('#pinClaim', () => {
+    it('should return 422 status on biz logic error', async () => {
+      try {
+        sandbox.stub(uut.useCases.ipfs, 'pinClaim').throws(new Error('test error'))
+
+        ctx.request.body = {}
+
+        await uut.pinClaim(ctx)
+
+        assert.fail('Unexpected result')
+      } catch (err) {
+        assert.equal(err.status, 422)
+        assert.include(err.message, 'test error')
+      }
+    })
+
+    it('should return 200 status on success', async () => {
+      // Mock dependencies
+      sandbox.stub(uut.useCases.ipfs, 'pinClaim').resolves({ success: true })
+
+      ctx.request.body = {}
+
+      await uut.pinClaim(ctx)
+
+      assert.isTrue(ctx.body.success)
+    })
+  })
 })

test/unit/controllers/rest-api/middleware/error-unit.js

@@ -0,0 +1,66 @@
+/*
+Unit tests for the REST API middleware that handle response errors.
+*/
+
+// Public npm libraries
+import { assert } from 'chai'
+import sinon from 'sinon'
+
+// Local libraries
+import errorMiddleware from '../../../../../src/controllers/rest-api/middleware/error.js'
+import { context as mockContext } from '../../../../unit/mocks/ctx-mock.js'
+
+describe('#Validators', () => {
+  let ctx
+  let sandbox
+
+  beforeEach(() => {
+    // Mock the context object.
+    ctx = mockContext()
+
+    sandbox = sinon.createSandbox()
+  })
+
+  afterEach(() => sandbox.restore())
+
+  describe('#errorMiddleware', () => {
+    it('should run next function', async () => {
+      // Spy on next
+      const next = sinon.spy(() => { })
+      errorMiddleware()(ctx, next)
+
+      assert.isTrue(next.calledOnce)
+    })
+
+    it('should handle unknown status error', async () => {
+      try {
+        const next = async () => {
+          const e = new Error('test error')
+          e.status = null
+          throw e
+        }
+
+        await errorMiddleware()(ctx, next)
+        assert.fail('Unexpected code path')
+      } catch (error) {
+        assert.equal(ctx.status, 500)
+        assert.equal(ctx.body, 'test error')
+      }
+    })
+    it('should handle known status error', async () => {
+      try {
+        const next = async () => {
+          const e = new Error('test error')
+          e.status = 422
+          throw e
+        }
+
+        await errorMiddleware()(ctx, next)
+        assert.fail('Unexpected code path')
+      } catch (error) {
+        assert.equal(ctx.status, 422)
+        assert.equal(ctx.body, 'test error')
+      }
+    })
+  })
+})

test/unit/controllers/rest-api/usage/usage.rest.controller.unit.js

@@ -0,0 +1,163 @@
+/*
+  Unit tests for the REST API handler for the /usage endpoints.
+*/
+
+// Public npm libraries
+import { assert } from 'chai'
+import sinon from 'sinon'
+
+// Local support libraries
+import adapters from '../../../mocks/adapters/index.js'
+import UseCasesMock from '../../../mocks/use-cases/index.js'
+import UsageController from '../../../../../src/controllers/rest-api/usage/controller.js'
+
+import { context as mockContext } from '../../../mocks/ctx-mock.js'
+
+let uut
+let sandbox
+let ctx
+
+describe('#Usage-REST-Controller', () => {
+  // const testUser = {}
+
+  beforeEach(() => {
+    const useCases = new UseCasesMock()
+    uut = new UsageController({ adapters, useCases })
+
+    sandbox = sinon.createSandbox()
+
+    // Mock the context object.
+    ctx = mockContext()
+  })
+
+  afterEach(() => sandbox.restore())
+
+  describe('#constructor', () => {
+    it('should throw an error if adapters are not passed in', () => {
+      try {
+        uut = new UsageController()
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(
+          err.message,
+          'Instance of Adapters library required when instantiating /usage REST Controller.'
+        )
+      }
+    })
+
+    it('should throw an error if useCases are not passed in', () => {
+      try {
+        uut = new UsageController({ adapters })
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(
+          err.message,
+          'Instance of Use Cases library required when instantiating /usage REST Controller.'
+        )
+      }
+    })
+  })
+
+  describe('#Get /usage', () => {
+    it('should return 422 status on biz logic error', async () => {
+      try {
+        sandbox.stub(uut.useCases.usage, 'getRestSummary').throws(new Error('test error'))
+        await uut.getStatus(ctx)
+
+        assert.fail('Unexpected result')
+      } catch (err) {
+        // console.log(err)
+        assert.equal(err.status, 422)
+        assert.include(err.message, 'test error')
+      }
+    })
+
+    it('should return 200 status on success', async () => {
+      await uut.getStatus(ctx)
+
+      // Assert the expected HTTP response
+      assert.equal(ctx.status, 200)
+
+      // Assert that expected properties exist in the returned data.
+      assert.property(ctx.response.body, 'status')
+    })
+  })
+
+  describe('#Get /ips', () => {
+    it('should return 422 status on biz logic error', async () => {
+      try {
+        sandbox.stub(uut.useCases.usage, 'getTopIps').throws(new Error('test error'))
+        await uut.getTopIps(ctx)
+
+        assert.fail('Unexpected result')
+      } catch (err) {
+        // console.log(err)
+        assert.equal(err.status, 422)
+        assert.include(err.message, 'test error')
+      }
+    })
+
+    it('should return 200 status on success', async () => {
+      await uut.getTopIps(ctx)
+
+      // Assert the expected HTTP response
+      assert.equal(ctx.status, 200)
+
+      // Assert that expected properties exist in the returned data.
+      assert.property(ctx.response.body, 'ips')
+    })
+  })
+
+  describe('#Get /endpoints', () => {
+    it('should return 422 status on biz logic error', async () => {
+      try {
+        sandbox.stub(uut.useCases.usage, 'getTopEndpoints').throws(new Error('test error'))
+        await uut.getTopEndpoints(ctx)
+
+        assert.fail('Unexpected result')
+      } catch (err) {
+        // console.log(err)
+        assert.equal(err.status, 422)
+        assert.include(err.message, 'test error')
+      }
+    })
+
+    it('should return 200 status on success', async () => {
+      await uut.getTopEndpoints(ctx)
+
+      // Assert the expected HTTP response
+      assert.equal(ctx.status, 200)
+
+      // Assert that expected properties exist in the returned data.
+      assert.property(ctx.response.body, 'endpoints')
+    })
+  })
+
+  describe('#handleError', () => {
+    it('should pass an error message', () => {
+      try {
+        const err = {
+          status: 422,
+          message: 'Unprocessable Entity'
+        }
+
+        uut.handleError(ctx, err)
+      } catch (err) {
+        assert.include(err.message, 'Unprocessable Entity')
+      }
+    })
+    it('should still throw error if there is no message', () => {
+      try {
+        const err = {
+          status: 404
+        }
+
+        uut.handleError(ctx, err)
+      } catch (err) {
+        assert.include(err.message, 'Not Found')
+      }
+    })
+  })
+})

test/unit/controllers/rest-api/usage/usage.rest.router.unit.js

@@ -0,0 +1,75 @@
+/*
+Unit tests for the REST API handler for the /usage endpoints.
+*/
+
+// Public npm libraries
+import { assert } from 'chai'
+
+import sinon from 'sinon'
+
+// Local support libraries
+import adapters from '../../../mocks/adapters/index.js'
+
+import UseCasesMock from '../../../mocks/use-cases/index.js'
+
+import UsageRouter from '../../../../../src/controllers/rest-api/usage/index.js'
+
+let uut
+let sandbox
+// let ctx
+
+// const mockContext = require('../../../../unit/mocks/ctx-mock').context
+
+describe('#Usage-REST-Router', () => {
+  beforeEach(() => {
+    const useCases = new UseCasesMock()
+    uut = new UsageRouter({ adapters, useCases })
+
+    sandbox = sinon.createSandbox()
+  })
+
+  afterEach(() => sandbox.restore())
+
+  describe('#constructor', () => {
+    it('should throw an error if adapters are not passed in', () => {
+      try {
+        uut = new UsageRouter()
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(
+          err.message,
+          'Instance of Adapters library required when instantiating IPFS REST Controller.'
+        )
+      }
+    })
+
+    it('should throw an error if useCases are not passed in', () => {
+      try {
+        uut = new UsageRouter({ adapters })
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(
+          err.message,
+          'Instance of Use Cases library required when instantiating IPFS REST Controller.'
+        )
+      }
+    })
+  })
+
+  describe('#attach', () => {
+    it('should throw an error if app is not passed in.', () => {
+      try {
+        uut.attach()
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(
+          err.message,
+          'Must pass app object when attaching REST API controllers.'
+        )
+      }
+    })
+  })
+})

test/unit/controllers/timer-controllers.unit.js

@@ -79,4 +79,19 @@ describe('#Timer-Controllers', () => {
       assert.equal(result, false)
     })
   })
+
+  describe('#cleanUsage', () => {
+    it('should kick off the Use Case', async () => {
+      const result = await uut.cleanUsage()
+
+      assert.equal(result, true)
+    })
+
+    it('should return false on error', async () => {
+      sandbox.stub(uut.useCases.usage, 'cleanUsage').throws(new Error('test error'))
+      const result = await uut.cleanUsage()
+
+      assert.equal(result, false)
+    })
+  })
 })

test/unit/mocks/adapters/index.js

@@ -1,10 +1,26 @@
 /*
   Mocks for the Adapter library.
 */
-
+class BlockstoreMock {
+  constructor () {
+    this.get = async () => {}
+  }
+}
+class FsMock {
+  constructor () {
+    this.ls = async function* () {
+      yield { path: 'test.txt', cid: 'QmS4ghgMgfFvqPjB4WKXHaN15ZyT4K4JYZxY5X5x5x5x5' }
+    }
+    this.cat = async function* () {
+      yield Buffer.from('test data')
+    }
+  }
+}
 class IpfsAdapter {
   constructor () {
     this.ipfs = {
+      blockstore: new BlockstoreMock(),
+      fs: new FsMock(),
       files: {
         stat: () => {}
       }
@@ -34,7 +50,9 @@ class IpfsCoordAdapter {
     this.peerInputHandler = () => {}
 
     this.state = {
-      serviceProviders: []
+      serviceProviders: [],
+      serviceProvidersByType: '',
+      selectedIpfsFileProvider:''
     }
   }
 }
@@ -138,5 +156,29 @@ class BchUseCaseMock {
   }
 }
 const bch = new BchUseCaseMock()
+const wallet = {
+  bchWallet: bch
 
-export default { ipfs, localdb, bch }
+}
+
+const ipfsFiles = {
+  pinClaim: () => {
+    return {
+      success: true,
+      message: 'Pin claimed'
+    }
+  },
+  getFileMetadata: () => {
+    return {
+      success: true,
+      message: 'Files metadata'
+    }
+  },
+  getPins: () => {
+    return {
+      success: true,
+      message: 'Pins'
+    }
+  }
+}
+export default { ipfs, localdb, bch, wallet, ipfsFiles }

test/unit/mocks/use-cases/index.js

@@ -49,6 +49,46 @@ class BchUseCaseMock {
   }
 }
 
+class UsageUseCaseMock {
+  async cleanUsage() {
+    return {}
+  }
+
+  async getRestSummary() {
+    return true
+  }
+
+  async getTopIps(params) {
+    return true
+  }
+
+  async getTopEndpoints(existingUser, newData) {
+    return true
+  }
+}
+
+class IpfsUseCaseMock {
+  async downloadCid() {
+    return {}
+  }
+
+  async cid2json() {
+    return {}
+  } 
+
+  async getCidMetadata() {
+    return {}
+  }
+
+  async getService() {
+    return {}
+  } 
+
+  async pinClaim() {
+    return {}
+  }
+}
+
 class UseCasesMock {
   constuctor(localConfig = {}) {
     // this.user = new UserUseCaseMock(localConfig)
@@ -58,6 +98,8 @@ class UseCasesMock {
 
   user = new UserUseCaseMock()
   bch = new BchUseCaseMock()
+  usage = new UsageUseCaseMock()
+  ipfs = new IpfsUseCaseMock()
 }
 
 export default UseCasesMock;

test/unit/use-cases/ipfs.use-case.unit.js

@@ -0,0 +1,270 @@
+/*
+  Unit tests for the ipfs-use-cases.js file.
+*/
+
+// Public npm libraries
+import { assert } from 'chai'
+
+import sinon from 'sinon'
+
+// Local support libraries
+// const testUtils = require('../../utils/test-utils')
+
+// Unit under test (uut)
+import UseCases from '../../../src/use-cases/ipfs-use-cases.js'
+
+import adapters from '../mocks/adapters/index.js'
+
+describe('#ipfs-use-cases', () => {
+  let uut
+  let sandbox
+
+  before(async () => {
+    // Delete all previous users in the database.
+    // await testUtils.deleteAllUsers()
+  })
+
+  beforeEach(() => {
+    sandbox = sinon.createSandbox()
+
+    uut = new UseCases({ adapters })
+    uut.adapters.ipfs.ipfsCoordAdapter = {
+      state: {
+        selectedIpfsFileProvider: 'provider'
+      }
+    }
+  })
+
+  afterEach(() => sandbox.restore())
+
+  describe('#constructor', () => {
+    it('should throw an error if adapters are not passed in', () => {
+      try {
+        uut = new UseCases()
+
+        assert.fail('Unexpected code path')
+
+        // This is here to prevent the linter from complaining.
+        assert.isOk(uut)
+      } catch (err) {
+        assert.include(
+          err.message,
+          'Instance of adapters must be passed in when instantiating IPFS Use Cases library.'
+        )
+      }
+    })
+  })
+
+  describe('#downloadCid', () => {
+    it('should download a file from IPFS', async () => {
+      sandbox.stub(uut, 'getCidMetadata').resolves('file.txt')
+
+      const result = await uut.downloadCid({ cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy' })
+
+      assert.property(result, 'filename')
+      assert.property(result, 'readStream')
+    })
+    it('should handle directory-based CIDs', async () => {
+      sandbox.stub(uut, 'getCidMetadata').resolves('file.txt')
+      sandbox.stub(uut.adapters.ipfs.ipfs.fs, 'ls').callsFake(async function * () {
+        yield { path: 'dir1/test.txt', cid: 'QmS4ghgMgfFvqPjB4WKXHaN15ZyT4K4JYZxY5X5x5x5x5' }
+      })
+      const result = await uut.downloadCid({ cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy' })
+
+      assert.property(result, 'filename')
+      assert.property(result, 'readStream')
+    })
+    it('should throw an error if cid is not provided ', async () => {
+      try {
+        await uut.downloadCid({})
+      } catch (error) {
+        assert.include(error.message, 'CID is undefined')
+      }
+    })
+  })
+  describe('#getWritePrice', () => {
+    it('should get price', async () => {
+      const result = await uut.getWritePrice()
+      assert.isNumber(result)
+    })
+    it('should handle undefined psffpp instance', async () => {
+      uut.psffpp = null
+      const result = await uut.getWritePrice()
+      assert.isNumber(result)
+    })
+
+    it('should handle error ', async () => {
+      try {
+        uut.psffpp = {
+          getMcWritePrice: () => {
+            throw new Error('test error')
+          }
+        }
+        await uut.getWritePrice()
+      } catch (error) {
+        assert.include(error.message, 'test error')
+      }
+    })
+  })
+  describe('#getCidMetadata', () => {
+    it('should get cid metadata', async () => {
+      sandbox.stub(uut.adapters.ipfsFiles, 'getFileMetadata').resolves({ success: true, fileMetadata: { dataPinned: true, filename: 'test.json' } })
+      const result = await uut.getCidMetadata({ cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy' })
+      assert.isString(result)
+      assert.equal(result, 'test.json')
+    })
+
+    it('should handle error ', async () => {
+      try {
+        sandbox.stub(uut.adapters.ipfsFiles, 'getFileMetadata').throws(new Error('test error'))
+        await uut.getCidMetadata({ cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy' })
+      } catch (error) {
+        assert.include(error.message, 'test error')
+      }
+    })
+
+    it('should handle non-success response from getFileMetadata', async () => {
+      try {
+        sandbox.stub(uut.adapters.ipfsFiles, 'getFileMetadata').resolves({ success: false, message: 'test error' })
+        await uut.getCidMetadata({ cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy' })
+      } catch (error) {
+        assert.include(error.message, 'test error')
+      }
+    })
+  })
+  describe('#cid2json', () => {
+    it('should get cid2json', async () => {
+      uut.adapters.ipfs.ipfsCoordAdapter = {
+        state: {
+          selectedIpfsFileProvider: 'provider'
+        }
+      }
+      sandbox.stub(uut.adapters.ipfsFiles, 'getFileMetadata').resolves({ fileMetadata: { dataPinned: true, filename: 'test.json' } })
+      sandbox.stub(uut.adapters.ipfs.ipfs.fs, 'ls').callsFake(function * () {
+        yield { name: 'test.json' }
+      })
+      sandbox.stub(JSON, 'parse').returns(true)
+      const result = await uut.cid2json({ cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy' })
+      assert.isObject(result)
+      assert.property(result, 'success')
+      assert.property(result, 'json')
+    })
+
+    it('should throw error if selectedIpfsFileProvider is not defined', async () => {
+      try {
+        uut.adapters.ipfs.ipfsCoordAdapter = {
+          state: {
+            selectedIpfsFileProvider: null
+          }
+        }
+        await uut.cid2json({ cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy' })
+        assert.fail('Unexpected code path')
+      } catch (error) {
+        assert.include(error.message, 'No IPFS File Provider Service is available yet. Try again in a few seconds')
+      }
+    })
+    it('should throw error if file metadata cant be fetched', async () => {
+      try {
+        sandbox.stub(uut.adapters.ipfsFiles, 'getFileMetadata').resolves({ success: false })
+        await uut.cid2json({ cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy' })
+        assert.fail('Unexpected code path')
+      } catch (error) {
+        assert.include(error.message, 'Could not communicate with instance of ipfs-file-pin-service')
+      }
+    })
+    it('should throw error if cid is not pinned', async () => {
+      try {
+        sandbox.stub(uut.adapters.ipfsFiles, 'getFileMetadata').resolves({ success: true, fileMetadata: { dataPinned: false } })
+        await uut.cid2json({ cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy' })
+        assert.fail('Unexpected code path')
+      } catch (error) {
+        assert.include(error.message, 'has not been pinned by ipfs-file-pin-service instance')
+      }
+    })
+    it('should throw error if filename has no .json extension', async () => {
+      try {
+        sandbox.stub(uut.adapters.ipfsFiles, 'getFileMetadata').resolves({ success: true, fileMetadata: { dataPinned: true, filename: 'test' } })
+        await uut.cid2json({ cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy' })
+        assert.fail('Unexpected code path')
+      } catch (error) {
+        assert.include(error.message, 'does not resolve to a JSON file')
+      }
+    })
+    it('should handle error if file cant be retrieved', async () => {
+      try {
+        sandbox.stub(uut.adapters.ipfsFiles, 'getFileMetadata').resolves({ fileMetadata: { dataPinned: true, filename: 'test.json' } })
+        sandbox.stub(uut.adapters.ipfs.ipfs.fs, 'cat').throws(new Error('test error'))
+        sandbox.stub(uut.adapters.ipfs.ipfs.fs, 'ls').callsFake(function * () {
+          yield { name: 'test.json' }
+        })
+        await uut.cid2json({ cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy' })
+        assert.fail('Unexpected code path')
+      } catch (error) {
+        assert.include(error.message, 'test error')
+      }
+    })
+
+    it('should handle error if cid is a directory', async () => {
+      try {
+        sandbox.stub(uut.adapters.ipfsFiles, 'getFileMetadata').resolves({ fileMetadata: { dataPinned: true, filename: 'test.json' } })
+        sandbox.stub(uut.adapters.ipfs.ipfs.fs, 'cat')
+          .onCall(0).throws(new Error('test error'))
+          .onCall(1).callsFake(function * () {
+            yield { name: 'test.json' }
+          })
+        sandbox.stub(uut.adapters.ipfs.ipfs.fs, 'ls').callsFake(function * () {
+          yield { name: 'test/directory/' }
+        })
+        await uut.cid2json({ cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy' })
+      } catch (error) {
+        assert.include(error.message, 'file does not resolve to a valid JSON file')
+      }
+    })
+    it('should get content from cid/name.json format', async () => {
+      sandbox.stub(uut.adapters.ipfsFiles, 'getFileMetadata').resolves({ fileMetadata: { dataPinned: true, filename: 'test.json' } })
+      sandbox.stub(uut.adapters.ipfs.ipfs.fs, 'cat')
+        .onCall(0).throws(new Error('test error'))
+        .onCall(1).callsFake(function * () {
+          yield Buffer.from('{"test": "test"}')
+        })
+      sandbox.stub(uut.adapters.ipfs.ipfs.fs, 'ls').callsFake(function * () {
+        yield { name: 'test/directory/test.json' }
+      })
+
+      const result = await uut.cid2json({ cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy' })
+      assert.isObject(result)
+      assert.property(result, 'success')
+      assert.property(result, 'json')
+    })
+    it('should handle if content cant be parsed', async () => {
+      try {
+        sandbox.stub(uut.adapters.ipfsFiles, 'getFileMetadata').resolves({ fileMetadata: { dataPinned: true, filename: 'test.json' } })
+        sandbox.stub(uut.adapters.ipfs.ipfs.fs, 'ls').callsFake(function * () {
+          yield { name: 'test.json' }
+        })
+        sandbox.stub(JSON, 'parse').throws(new Error())
+
+        await uut.cid2json({ cid: 'bafybeib2rphswe7clvclverw7xi7nejkpkh4mdfcurdmcgw7wcup7za6wy' })
+      } catch (error) {
+        assert.include(error.message, 'not resolve to a valid JSON object')
+      }
+    })
+  })
+  describe('#pinClaim', () => {
+    it('should process pinClaim', async () => {
+      const result = await uut.pinClaim()
+      assert.isObject(result)
+      assert.property(result, 'success')
+      assert.property(result, 'message')
+    })
+
+    it('should handle error ', async () => {
+      try {
+        sandbox.stub(uut.adapters.ipfsFiles, 'pinClaim').throws(new Error('test error'))
+        await uut.pinClaim()
+      } catch (error) {
+        assert.include(error.message, 'test error')
+      }
+    })
+  })
+})

test/unit/use-cases/usage.use-case.unit.js

@@ -0,0 +1,255 @@
+/*
+Unit tests for the use-cases/usage-use-cases.js  business logic library.
+
+*/
+
+// Public npm libraries
+import { assert } from 'chai'
+import sinon from 'sinon'
+
+// Local support libraries
+import adapters from '../mocks/adapters/index.js'
+
+// Mock
+import { context as mockContext } from '../mocks/ctx-mock.js'
+
+// Unit under test (uut)
+import { UsageUseCases, restCalls, usageMiddleware } from '../../../src/use-cases/usage-use-cases.js'
+
+describe('#usage-use-case', () => {
+  let uut
+  let sandbox
+  let ctx
+
+  before(async () => {
+
+  })
+
+  beforeEach(() => {
+    sandbox = sinon.createSandbox()
+    uut = new UsageUseCases({ adapters })
+
+    // Set as empty array
+    restCalls.splice(0, restCalls.length)
+
+    ctx = mockContext()
+  })
+
+  afterEach(() => sandbox.restore())
+
+  describe('#constructor', () => {
+    it('should throw an error if adapters are not passed in', () => {
+      try {
+        uut = new UsageUseCases()
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(
+          err.message,
+          'Instance of adapters must be passed in when instantiating Usage Use Cases library.'
+        )
+      }
+    })
+  })
+
+  describe('#cleanUsage', () => {
+    it('should delete older data than 24 hours', () => {
+      const now = new Date() // Mock date
+
+      // set older mock data
+      restCalls.push({
+        timestamp: now.getTime() - (60000 * 60 * 24),
+        ip: '127.0.0.1'
+      })
+
+      // Set recently mock data
+      restCalls.push({
+        timestamp: now.getTime(),
+        ip: 'localhost'
+      })
+
+      const result = uut.cleanUsage()
+
+      assert.isArray(result)
+      assert.equal(result.length, 1)
+      assert.equal(result[0].ip, 'localhost')
+    })
+
+    it('should handle error', () => {
+      try {
+        // Force an error
+        sandbox.stub(restCalls, 'filter').throws(new Error('uut error'))
+
+        uut.cleanUsage()
+
+        assert.fail('Unexpected code path')
+      } catch (error) {
+        assert.equal(error.message, 'uut error')
+      }
+    })
+  })
+  describe('#getRestSummary', () => {
+    it('should get the number of rest calls', () => {
+      // Set mock data
+      restCalls.push({
+        ip: 'localhost'
+      })
+
+      const result = uut.getRestSummary()
+
+      assert.isNumber(result)
+      assert.equal(result, 1)
+    })
+
+    it('should handle error', () => {
+      try {
+        // Force an error
+        sandbox.stub(console, 'log').throws(new Error('uut error'))
+
+        uut.getRestSummary()
+
+        assert.fail('Unexpected code path')
+      } catch (error) {
+        assert.equal(error.message, 'uut error')
+      }
+    })
+  })
+
+  describe('#getTopIps', () => {
+    it('should get top IPs', () => {
+      // Set mock data
+      restCalls.push({
+        ip: 'localhost'
+      })
+
+      // Set mock data
+      restCalls.push({
+        ip: 'localhost'
+      })
+
+      const result = uut.getTopIps()
+
+      assert.isArray(result)
+
+      assert.property(result[0], 'ip')
+      assert.property(result[0], 'cnt')
+
+      assert.equal(result[0].ip, 'localhost')
+      assert.equal(result[0].cnt, '2')
+    })
+    it('should return a maximum of 20 values', () => {
+      //  Fill Array with 21 values
+      for (let i = 0; i < 21; i++) {
+        restCalls.push({
+          ip: `localhost-${i}`
+        })
+      }
+
+      const result = uut.getTopIps()
+
+      assert.isArray(result)
+
+      assert.property(result[0], 'ip')
+      assert.property(result[0], 'cnt')
+
+      assert.equal(result.length, 20)
+    })
+    it('should handle error', () => {
+      try {
+        // Set mock data
+        restCalls.push(null)
+
+        uut.getTopIps()
+
+        assert.fail('Unexpected code path')
+      } catch (error) {
+        assert.include(error.message, 'Cannot read properties')
+      }
+    })
+  })
+
+  describe('#getTopEndpoints', () => {
+    it('should get top Endpoints', () => {
+      // Set mock data
+      restCalls.push({
+        ip: 'localhost',
+        url: '/api/v1/users',
+        method: 'GET'
+      })
+
+      // Set mock data
+      restCalls.push({
+        ip: 'localhost',
+        url: '/api/v1/users',
+        method: 'GET'
+      })
+
+      const result = uut.getTopEndpoints()
+
+      assert.isArray(result)
+
+      assert.property(result[0], 'endpoint')
+      assert.property(result[0], 'cnt')
+
+      assert.equal(result[0].endpoint, 'GET /api/v1/users')
+      assert.equal(result[0].cnt, '2')
+    })
+    it('should return a maximum of 20 values', () => {
+      //  Fill Array with 21 values
+      for (let i = 0; i < 21; i++) {
+        restCalls.push({
+          ip: 'localhost',
+          url: `/api/v1/users-${i}`,
+          method: 'GET'
+        })
+      }
+
+      const result = uut.getTopEndpoints()
+
+      assert.isArray(result)
+
+      assert.property(result[0], 'endpoint')
+      assert.property(result[0], 'cnt')
+
+      assert.equal(result.length, 20)
+    })
+
+    it('should handle error', () => {
+      try {
+        // Set mock data
+        restCalls.push(null)
+
+        uut.getTopEndpoints()
+
+        assert.fail('Unexpected code path')
+      } catch (error) {
+        assert.include(error.message, 'Cannot read properties')
+      }
+    })
+  })
+
+  describe('#usageMiddleware', () => {
+    it('should update restCalls state', async () => {
+      // Spy on next
+      const next = sinon.spy(() => { })
+
+      await usageMiddleware()(ctx, next)
+
+      assert.equal(restCalls.length, 1)
+      assert.isTrue(next.called)
+    })
+
+    it('should handle error', async () => {
+      try {
+        const next = () => { throw new Error('uut error') }
+
+        await usageMiddleware()(ctx, next)
+        assert.fail('Unexpected code path')
+      } catch (error) {
+        assert.equal(error.message, 'uut error')
+        assert.equal(ctx.status, 500)
+        assert.equal(restCalls.length, 0)
+      }
+    })
+  })
+})