Use condition contracts hash generation to generate the signature.

src/keeper/contracts/templates/AgreementTemplate.abstract.ts

@@ -3,7 +3,7 @@ import { AgreementStoreManager, ConditionStoreManager } from "../managers"
 import { Condition, ConditionState, conditionStateNames } from "../conditions/Condition.abstract"
 import Keeper from "../../Keeper"
 import { DDO } from '../../../ddo/DDO'
-import { ServiceAgreementTemplate, ServiceAgreementTemplateCondition } from '../../../ddo/ServiceAgreementTemplate'
+import { ServiceAgreementTemplate } from '../../../ddo/ServiceAgreementTemplate'
 import { zeroX, Logger } from "../../../utils"
 
 export abstract class AgreementTemplate extends ContractBase {
@@ -53,9 +53,9 @@ export abstract class AgreementTemplate extends ContractBase {
             .map(address => keeper.getConditionByAddress(address))
     }
 
-    abstract async getServiceAgreementTemplateValuesMap(ddo: DDO, agreementId: string, consumer: string): Promise<{[value: string]: string}>
+    abstract getAgreementIdsFromDDO(agreementId: string, ddo: DDO, from: string): Promise<string[]>
 
-    abstract getServiceAgreementTemplate(): Promise<ServiceAgreementTemplate>
+    abstract async getServiceAgreementTemplate(): Promise<ServiceAgreementTemplate>
 
     public async getServiceAgreementTemplateConditions() {
         const serviceAgreementTemplate = await this.getServiceAgreementTemplate()

src/keeper/contracts/templates/EscrowAccessSecretStoreTemplate.ts

@@ -1,7 +1,6 @@
 import { AgreementTemplate } from "./AgreementTemplate.abstract"
 import { LockRewardCondition, EscrowReward, AccessSecretStoreCondition } from '../conditions'
 import DIDRegistry from '../DIDRegistry'
-import Keeper from "../../Keeper"
 import { DDO } from '../../../ddo/DDO'
 import { generateId, zeroX } from '../../../utils'
 
@@ -56,32 +55,15 @@ export class EscrowAccessSecretStoreTemplate extends AgreementTemplate {
      * @return {Promise<string>}        Agreement ID.
      */
     public async createFullAgreement(did: string, amount: number, from?: string): Promise<string> {
-        from = await this.getFromAddress(from)
-
-        const didRegistry = await DIDRegistry.getInstance()
-
-        const accessSecretStoreCondition = await AccessSecretStoreCondition.getInstance()
-        const lockRewardCondition = await LockRewardCondition.getInstance()
-        const escrowReward = await EscrowReward.getInstance()
-
         const agreementId = zeroX(generateId())
-        const publisher = await didRegistry.getDIDOwner(did)
+        const {accessSecretStoreConditionId, lockRewardConditionId, escrowRewardId} =
+            await this.createFullAgreementData(agreementId, did, amount, from)
 
-        const conditionIdAccess = await accessSecretStoreCondition.generateIdHash(agreementId, did, from)
-        const conditionIdLock = await lockRewardCondition.generateIdHash(agreementId, await escrowReward.getAddress(), amount)
-        const conditionIdEscrow = await escrowReward.generateIdHash(
-            agreementId,
-            amount,
-            from,
-            publisher,
-            conditionIdLock,
-            conditionIdAccess,
-        )
 
         await this.createAgreement(
             agreementId,
             did,
-            [conditionIdAccess, conditionIdLock, conditionIdEscrow],
+            [accessSecretStoreConditionId, lockRewardConditionId, escrowRewardId],
             [0, 0, 0],
             [0, 0, 0],
             from,
@@ -90,31 +72,38 @@ export class EscrowAccessSecretStoreTemplate extends AgreementTemplate {
         return agreementId
     }
 
-    async getServiceAgreementTemplateValuesMap(ddo: DDO, agreementId: string, consumer: string): Promise<{[value: string]: string}> {
-        const keeper = await Keeper.getInstance()
-        const ddoOwner = ddo.proof && ddo.proof.creator
-        const amount = ddo.findServiceByType("Metadata").metadata.base.price
+    public async getAgreementIdsFromDDO(agreementId: string, ddo: DDO, from: string) {
+        const {accessSecretStoreConditionId, lockRewardConditionId, escrowRewardId} =
+            await this.createFullAgreementData(agreementId, ddo.shortId(), ddo.findServiceByType("Metadata").metadata.base.price, from)
+        return [accessSecretStoreConditionId, lockRewardConditionId, escrowRewardId]
+    }
 
-        let lockCondition
-        let releaseCondition
+    private async createFullAgreementData(agreementId: string, did: string, amount: number, from?: string) {
+        from = await this.getFromAddress(from)
 
-        try {
-            lockCondition = await keeper.conditions.lockRewardCondition.hashValues(ddoOwner, amount)
-        } catch(e) { }
+        const didRegistry = await DIDRegistry.getInstance()
 
-        try {
-            releaseCondition = await keeper.conditions.accessSecretStoreCondition.hashValues(ddo.shortId(), consumer)
-        } catch(e) { }
+        const accessSecretStoreCondition = await AccessSecretStoreCondition.getInstance()
+        const lockRewardCondition = await LockRewardCondition.getInstance()
+        const escrowReward = await EscrowReward.getInstance()
+
+        const publisher = await didRegistry.getDIDOwner(did)
+
+        const lockRewardConditionId = await lockRewardCondition.generateIdHash(agreementId, await escrowReward.getAddress(), amount)
+        const accessSecretStoreConditionId = await accessSecretStoreCondition.generateIdHash(agreementId, did, from)
+        const escrowRewardId = await escrowReward.generateIdHash(
+            agreementId,
+            amount,
+            from,
+            publisher,
+            lockRewardConditionId,
+            accessSecretStoreConditionId,
+        )
 
         return {
-            rewardAddress: ddoOwner,
-            amount: amount.toString(),
-            documentId: ddo.shortId(),
-            grantee: consumer,
-            receiver: consumer,
-            sender: ddoOwner,
-            lockCondition,
-            releaseCondition,
+            lockRewardConditionId,
+            accessSecretStoreConditionId,
+            escrowRewardId,
         }
     }
 }

src/ocean/OceanAgreements.ts

@@ -10,7 +10,7 @@ import { zeroX, didPrefixed } from "../utils"
 
 import OceanAgreementsConditions from "./OceanAgreementsConditions"
 
-export interface AgreementPreparionResult {
+export interface AgreementPrepareResult {
     agreementId: string
     signature: string
 }
@@ -50,25 +50,30 @@ export default class OceanAgreements {
      * @param  {string} did Decentralized ID.
      * @param  {string} serviceDefinitionId Service definition ID.
      * @param  {Account} consumer Consumer account.
-     * @return {Promise<AgreementPreparionResult>} Agreement ID and signaturee.
+     * @return {Promise<AgreementPrepareResult>} Agreement ID and signaturee.
      */
     public async prepare(
         did: string,
         serviceDefinitionId: string,
         consumer: Account,
-    ): Promise<AgreementPreparionResult> {
-        const keeper = await Keeper.getInstance()
-
+    ): Promise<AgreementPrepareResult> {
         const d: DID = DID.parse(did as string)
         const ddo = await AquariusProvider.getAquarius().retrieveDDO(d)
         const agreementId: string = generateId()
 
+        const keeper = await Keeper.getInstance()
         const templateName = ddo.findServiceByType("Access").serviceAgreementTemplate.contractName
-        const valuesMap = await keeper
+        const agreementConditionsIds = await keeper
             .getTemplateByName(templateName)
-            .getServiceAgreementTemplateValuesMap(ddo, agreementId, consumer.getId())
+            .getAgreementIdsFromDDO(agreementId, ddo, consumer.getId())
 
-        const signature = await ServiceAgreement.signServiceAgreement(ddo, serviceDefinitionId, agreementId, valuesMap, consumer)
+        const signature = await ServiceAgreement.signServiceAgreement(
+            ddo,
+            serviceDefinitionId,
+            agreementId,
+            agreementConditionsIds,
+            consumer,
+        )
 
         return {agreementId, signature}
     }

src/ocean/ServiceAgreements/ServiceAgreement.ts

@@ -15,13 +15,11 @@ export default class ServiceAgreement {
         ddo: DDO,
         serviceDefinitionId: string,
         serviceAgreementId: string,
-        valuesMap: {[value: string]: string},
+        agreementConditionsIds: string[],
         consumer: Account,
     ): Promise<string> {
 
         const service = ddo.findServiceById<"Access">(serviceDefinitionId)
-        const values: ValuePair[][] = ServiceAgreement.getValuesFromService(service, valuesMap)
-        const valueHashes: string[] = ServiceAgreement.createValueHashes(values)
         const timelockValues: number[] = ServiceAgreement.getTimeValuesFromService(service, "timelock")
         const timeoutValues: number[] = ServiceAgreement.getTimeValuesFromService(service, "timeout")
 
@@ -32,7 +30,7 @@ export default class ServiceAgreement {
         const serviceAgreementHashSignature = await ServiceAgreement.createHashSignature(
             service.templateId,
             serviceAgreementId,
-            valueHashes,
+            agreementConditionsIds,
             timelockValues,
             timeoutValues,
             consumer,
@@ -65,27 +63,6 @@ export default class ServiceAgreement {
         return serviceAgreementHashSignature
     }
 
-    private static createValueHashes(parameterValuePairs: ValuePair[][]): string[] {
-        return parameterValuePairs
-            .map((valuePairs: ValuePair[]) =>  ServiceAgreement.hashValuePairArray(valuePairs))
-    }
-
-    private static hashValuePairArray(valuePairs: ValuePair[]): string {
-        let hash: string
-        try {
-            hash = (Web3Provider as any).getWeb3().utils.soliditySha3(...valuePairs).toString("hex")
-        } catch (err) {
-            Logger.error(`Hashing of ${JSON.stringify(valuePairs, null, 2)} failed.`)
-            throw err
-        }
-
-        if (!hash) {
-            throw new Error("hashValuePairArray failed to create hash.")
-        }
-
-        return hash
-    }
-
     public static hashServiceAgreement(
         serviceAgreementTemplateId: string,
         serviceAgreementId: string,
@@ -111,15 +88,4 @@ export default class ServiceAgreement {
 
         return timeoutValues
     }
-
-    private static getValuesFromService(service: ServiceAccess, valuesMap: {[key: string]: string}): ValuePair[][] {
-        return (service.serviceAgreementTemplate.conditions || [])
-            .map(condition =>
-                (condition.parameters || [])
-                    .map(({type, name}) => ({
-                        type,
-                        value: valuesMap[name.replace(/^_/, "")] || "",
-                    }))
-            )
-    }
 }

tsconfig.json

@@ -25,6 +25,7 @@
   ],
   "exclude": [
     "node_modules",
-    "**/*.test.ts"
+    "**/*.test.ts",
+    "src/examples"
   ]
 }