Decoupled Aquarius class from Ocean class

and removed inheritance from Instantiable

Signed-off-by: Pablo F. Mescher <pfmescher@gmail.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@oceanprotocol/squid",
-  "version": "1.0.0",
+  "version": "1.0.2",
   "description": "JavaScript client library for Ocean Protocol",
   "main": "./dist/node/squid.js",
   "typings": "./dist/node/squid.d.ts",

src/aquarius/Aquarius.ts

@@ -1,7 +1,8 @@
 import { URL } from 'whatwg-url'
 import { DDO } from '../ddo/DDO'
 import DID from '../ocean/DID'
-import { Instantiable, InstantiableConfig } from '../Instantiable.abstract'
+import { Logger } from '../utils'
+import { WebServiceConnector } from '../ocean/utils/WebServiceConnector'
 
 const apiPath = '/api/v1/aquarius/assets/ddo'
 
@@ -24,22 +25,27 @@ export interface SearchQuery {
  * Provides a interface with Aquarius.
  * Aquarius provides an off-chain database store for metadata about data assets.
  */
-export class Aquarius extends Instantiable {
+export class Aquarius {
+    private fetch: WebServiceConnector
+    private logger: Logger
+    private aquariusUri: string
+
     private get url() {
-        return this.config.aquariusUri
+        return this.aquariusUri
     }
 
-    constructor(config: InstantiableConfig) {
-        super()
-        this.setInstanceConfig(config)
+    constructor(aquariusUri: string, logger?: Logger) {
+        this.fetch = new WebServiceConnector(logger)
+        this.logger = logger
+        this.aquariusUri = aquariusUri
     }
 
     public async getVersionInfo() {
-        return (await this.ocean.utils.fetch.get(this.url)).json()
+        return (await this.fetch.get(this.url)).json()
     }
 
     public async getAccessUrl(accessToken: any, payload: any): Promise<string> {
-        const accessUrl: string = await this.ocean.utils.fetch
+        const accessUrl: string = await this.fetch
             .post(`${accessToken.service_endpoint}/${accessToken.resource_id}`, payload)
             .then((response: any): string => {
                 if (response.ok) {
@@ -69,7 +75,7 @@ export class Aquarius extends Instantiable {
      * @return {Promise<QueryResult>}
      */
     public async queryMetadata(query: SearchQuery): Promise<QueryResult> {
-        const result: QueryResult = await this.ocean.utils.fetch
+        const result: QueryResult = await this.fetch
             .post(`${this.url}${apiPath}/query`, JSON.stringify(query))
             .then((response: any) => {
                 if (response.ok) {
@@ -107,7 +113,8 @@ export class Aquarius extends Instantiable {
         )
         fullUrl.searchParams.append('offset', query.offset.toString())
         fullUrl.searchParams.append('page', query.page.toString())
-        const result: QueryResult = await this.ocean.utils.fetch
+
+        const result: QueryResult = await this.fetch
             .get(fullUrl)
             .then((response: any) => {
                 if (response.ok) {
@@ -138,7 +145,7 @@ export class Aquarius extends Instantiable {
      */
     public async storeDDO(ddo: DDO): Promise<DDO> {
         const fullUrl = `${this.url}${apiPath}`
-        const result: DDO = await this.ocean.utils.fetch
+        const result: DDO = await this.fetch
             .post(fullUrl, DDO.serialize(ddo))
             .then((response: any) => {
                 if (response.ok) {
@@ -174,7 +181,7 @@ export class Aquarius extends Instantiable {
     ): Promise<DDO> {
         did = did && DID.parse(did)
         const fullUrl = metadataServiceEndpoint || `${this.url}${apiPath}/${did.getDid()}`
-        const result = await this.ocean.utils.fetch
+        const result = await this.fetch
             .get(fullUrl)
             .then((response: any) => {
                 if (response.ok) {

src/ocean/Ocean.ts

@@ -37,10 +37,11 @@ export class Ocean extends Instantiable {
         }
         instance.setInstanceConfig(instanceConfig)
 
+        instance.utils = await OceanUtils.getInstance(instanceConfig)
         instance.keeper = await Keeper.getInstance(instanceConfig)
 
         instance.brizo = new Brizo(instanceConfig)
-        instance.aquarius = new Aquarius(instanceConfig)
+        instance.aquarius = new Aquarius(instanceConfig.config.aquariusUri, instanceConfig.logger)
 
         instance.accounts = await OceanAccounts.getInstance(instanceConfig)
         instance.auth = await OceanAuth.getInstance(instanceConfig)
@@ -50,8 +51,6 @@ export class Ocean extends Instantiable {
         instance.tokens = await OceanTokens.getInstance(instanceConfig)
         instance.versions = await OceanVersions.getInstance(instanceConfig)
 
-        instance.utils = await OceanUtils.getInstance(instanceConfig)
-
         return instance
     }
 

src/ocean/utils/OceanUtils.ts

@@ -16,9 +16,9 @@ export class OceanUtils extends Instantiable {
         const instance = new OceanUtils()
         instance.setInstanceConfig(config)
 
-        instance.agreements = new ServiceAgreement(config)
-        instance.signature = new SignatureUtils(config)
-        instance.fetch = new WebServiceConnector(config)
+        instance.agreements = new ServiceAgreement(config.ocean, config.logger, config.web3)
+        instance.signature = new SignatureUtils(config.web3, config.logger)
+        instance.fetch = new WebServiceConnector(config.logger)
 
         return instance
     }

src/ocean/utils/ServiceAgreement.ts

@@ -2,13 +2,18 @@ import { ServiceAgreementTemplateCondition } from '../../ddo/ServiceAgreementTem
 import { DDO } from '../../ddo/DDO'
 import { ServiceAccess } from '../../ddo/Service'
 import Account from '../Account'
-import { zeroX } from '../../utils'
-import { Instantiable, InstantiableConfig } from '../../Instantiable.abstract'
+import { zeroX, Logger } from '../../utils'
+import { Ocean } from '../../squid'
+import Web3 from 'web3'
 
-export class ServiceAgreement extends Instantiable {
-    constructor(config: InstantiableConfig) {
-        super()
-        this.setInstanceConfig(config)
+export class ServiceAgreement {
+    private ocean: Ocean
+    private logger: Logger
+    private web3: Web3
+    constructor(ocean: Ocean, logger: Logger, web3: Web3) {
+        this.ocean = ocean
+        this.logger = logger
+        this.web3 = web3
     }
 
     public async signServiceAgreement(

src/ocean/utils/SignatureUtils.ts

@@ -1,9 +1,13 @@
-import { Instantiable, InstantiableConfig } from '../../Instantiable.abstract'
+import Web3 from 'web3'
+import { Logger } from '../../utils'
 
-export class SignatureUtils extends Instantiable {
-    constructor(config: InstantiableConfig) {
-        super()
-        this.setInstanceConfig(config)
+export class SignatureUtils {
+    private web3: Web3
+    private logger: Logger;
+    
+    constructor(web3: Web3, logger: Logger) {
+        this.web3 = web3
+        this.logger = logger;
     }
 
     public async signText(

src/ocean/utils/WebServiceConnector.ts

@@ -1,17 +1,17 @@
 import { BodyInit, RequestInit, Response } from 'node-fetch'
 import fs from 'fs'
-import { Instantiable, InstantiableConfig } from '../../Instantiable.abstract'
 
 const fetch = require('node-fetch')
 import save = require('save-file')
+import { Logger } from '../../utils'
 
 /**
  * Provides a common interface to web services.
  */
-export class WebServiceConnector extends Instantiable {
-    constructor(config: InstantiableConfig) {
-        super()
-        this.setInstanceConfig(config)
+export class WebServiceConnector {
+    public logger: Logger;
+    constructor(logger: Logger) {
+        this.logger = logger;
     }
 
     public post(url: string, payload: BodyInit): Promise<Response> {

src/squid.ts

@@ -4,6 +4,7 @@ import DID from './ocean/DID'
 import { Ocean } from './ocean/Ocean'
 import { LoggerInstance as Logger } from './utils/Logger'
 import Keeper from './keeper/Keeper'
+import { Aquarius } from './aquarius/Aquarius'
 
 import * as templates from './keeper/contracts/templates'
 import * as conditions from './keeper/contracts/conditions'
@@ -24,4 +25,4 @@ export {
 export { AgreementTemplate } from './keeper/contracts/templates'
 export { Condition, ConditionState } from './keeper/contracts/conditions'
 
-export { Ocean, Account, Config, DID, Logger, Keeper, conditions, templates, utils }
+export { Ocean, Account, Config, DID, Logger, Keeper, Aquarius, conditions, templates, utils }

test/aquarius/Aquarius.test.ts

@@ -97,6 +97,18 @@ describe('Aquarius', () => {
             assert.equal(result.totalResults, 1)
         })
 
+        it('should query metadata by text with a new instance', async () => {
+            spy.on(ocean.utils.fetch, 'get', () => reponsify(getResults([new DDO()])))
+
+            const aquariusNew = new Aquarius(config.aquariusUri, ocean.utils, null)
+            const result = await aquariusNew.queryMetadataByText(query)
+            assert.typeOf(result.results, 'array')
+            assert.lengthOf(result.results, 1)
+            assert.equal(result.page, 0)
+            assert.equal(result.totalPages, 1)
+            assert.equal(result.totalResults, 1)
+        })
+
         it('should query metadata and return real ddo', async () => {
             spy.on(ocean.utils.fetch, 'get', () => reponsify(getResults([new DDO()])))