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last fixes for chaincode-javascript of asset-transfer-basic

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Signed-off-by: fraVlaca <ocsenarf@outlook.com>
This commit is contained in:
fraVlaca 2021-09-06 13:06:36 +01:00
parent 8ae4abb924
commit a3db59c145
1 changed files with 10 additions and 10 deletions
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20
asset-transfer-basic/chaincode-typescript/src/assetTransfer.ts
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@ -1,9 +1,9 @@
/* /*
* SPDX-License-Identifier: Apache-2.0 * SPDX-License-Identifier: Apache-2.0
*/ */
//Deterministic JSON.stringify() // Deterministic JSON.stringify()
const stringify = require('json-stringify-deterministic') import * as stringify from 'json-stringify-deterministic');
const sortKeysRecursive = require('sort-keys-recursive') import * as sortKeysRecursive from 'sort-keys-recursive';
import {Context, Contract, Info, Returns, Transaction} from 'fabric-contract-api'; import {Context, Contract, Info, Returns, Transaction} from 'fabric-contract-api';
import {Asset} from './asset'; import {Asset} from './asset';
@ -59,10 +59,10 @@ export class AssetTransferContract extends Contract {
for (const asset of assets) { for (const asset of assets) {
asset.docType = 'asset'; asset.docType = 'asset';
//example of how to write to world state deterministically // example of how to write to world state deterministically
//use convetion of alphabetic order // use convetion of alphabetic order
//we insert data in alphabetic order using 'json-stringify-deterministic' and 'sort-keys-recursive' // we insert data in alphabetic order using 'json-stringify-deterministic' and 'sort-keys-recursive'
//when retrieving data, in any lang, the order of data will be the same and consequently also the corresonding hash // when retrieving data, in any lang, the order of data will be the same and consequently also the corresonding hash
await ctx.stub.putState(asset.ID, Buffer.from(stringify(sortKeysRecursive(asset)))); await ctx.stub.putState(asset.ID, Buffer.from(stringify(sortKeysRecursive(asset))));
console.info(`Asset ${asset.ID} initialized`); console.info(`Asset ${asset.ID} initialized`);
} }
@ -83,7 +83,7 @@ export class AssetTransferContract extends Contract {
Owner: owner, Owner: owner,
AppraisedValue: appraisedValue, AppraisedValue: appraisedValue,
}; };
//we insert data in alphabetic order using 'json-stringify-deterministic' and 'sort-keys-recursive' // we insert data in alphabetic order using 'json-stringify-deterministic' and 'sort-keys-recursive'
await ctx.stub.putState(id, Buffer.from(stringify(sortKeysRecursive(asset)))); await ctx.stub.putState(id, Buffer.from(stringify(sortKeysRecursive(asset))));
} }
@ -113,7 +113,7 @@ export class AssetTransferContract extends Contract {
Owner: owner, Owner: owner,
AppraisedValue: appraisedValue, AppraisedValue: appraisedValue,
}; };
//we insert data in alphabetic order using 'json-stringify-deterministic' and 'sort-keys-recursive' // we insert data in alphabetic order using 'json-stringify-deterministic' and 'sort-keys-recursive'
return ctx.stub.putState(id, Buffer.from(stringify(sortKeysRecursive(updatedAsset)))); return ctx.stub.putState(id, Buffer.from(stringify(sortKeysRecursive(updatedAsset))));
} }
@ -141,7 +141,7 @@ export class AssetTransferContract extends Contract {
const assetString = await this.ReadAsset(ctx, id); const assetString = await this.ReadAsset(ctx, id);
const asset = JSON.parse(assetString); const asset = JSON.parse(assetString);
asset.Owner = newOwner; asset.Owner = newOwner;
//we insert data in alphabetic order using 'json-stringify-deterministic' and 'sort-keys-recursive' // we insert data in alphabetic order using 'json-stringify-deterministic' and 'sort-keys-recursive'
await ctx.stub.putState(id, Buffer.from(stringify(sortKeysRecursive(asset)))); await ctx.stub.putState(id, Buffer.from(stringify(sortKeysRecursive(asset))));
} }