Add typescript decorators, fix case, config tslint for typescript chaincode

Signed-off-by: Chris Gabriel <chris_gabriel_98@yahoo.com>

asset-transfer-basic/chaincode-typescript/src/asset.ts

@@ -1,8 +1,12 @@
 /*
  * SPDX-License-Identifier: Apache-2.0
  */
+import { Object, Property } from 'fabric-contract-api';
+
+@Object()
 
 export class Asset {
+    @Property()
     public docType?: string;
     public ID: string;
     public Color: string;

asset-transfer-basic/chaincode-typescript/src/assetTransfer.ts

@@ -2,53 +2,55 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import { Context, Contract } from 'fabric-contract-api';
+import { Context, Contract, Info, Returns, Transaction } from 'fabric-contract-api';
 import { Asset } from './asset';
 
+@Info({ title: 'AssetTransferBasic', description: 'Asset Transfer Basic contract implemented in TypeScript' })
 export class AssetTransfer extends Contract {
 
-    public async initLedger(ctx: Context) {
+    @Transaction()
+    public async InitLedger(ctx: Context) {
         const assets: Asset[] = [
             {
-                ID: "asset1",
+                ID: 'asset1',
-                Color: "blue",
+                Color: 'blue',
                 Size: 5,
-                Owner: "Tomoko",
+                Owner: 'Tomoko',
                 AppraisedValue: 300,
             },
             {
-                ID: "asset2",
+                ID: 'asset2',
-                Color: "red",
+                Color: 'red',
                 Size: 5,
-                Owner: "Brad",
+                Owner: 'Brad',
                 AppraisedValue: 400,
             },
             {
-                ID: "asset3",
+                ID: 'asset3',
-                Color: "green",
+                Color: 'green',
                 Size: 10,
-                Owner: "Jin Soo",
+                Owner: 'Jin Soo',
                 AppraisedValue: 500,
             },
             {
-                ID: "asset4",
+                ID: 'asset4',
-                Color: "yellow",
+                Color: 'yellow',
                 Size: 10,
-                Owner: "Max",
+                Owner: 'Max',
                 AppraisedValue: 600,
             },
             {
-                ID: "asset5",
+                ID: 'asset5',
-                Color: "black",
+                Color: 'black',
                 Size: 15,
-                Owner: "Adriana",
+                Owner: 'Adriana',
                 AppraisedValue: 700,
             },
             {
-                ID: "asset6",
+                ID: 'asset6',
-                Color: "white",
+                Color: 'white',
                 Size: 15,
-                Owner: "Michel",
+                Owner: 'Michel',
                 AppraisedValue: 800,
             },
         ];
@@ -61,7 +63,8 @@ export class AssetTransfer extends Contract {
     }
 
     // createAsset issues a new asset to the world state with given details.
-    public async createAsset(ctx: Context, id: string, color: string, size: number, owner: string, appraisedValue: number) {
+    @Transaction()
+    public async CreateAsset(ctx: Context, id: string, color: string, size: number, owner: string, appraisedValue: number) {
         const asset = {
             ID: id,
             Color: color,
@@ -74,7 +77,8 @@ export class AssetTransfer extends Contract {
     }
 
     // readAsset returns the asset stored in the world state with given id.
-    public async readAsset(ctx: Context, id: string): Promise<string> {
+    @Transaction(false)
+    public async ReadAsset(ctx: Context, id: string): Promise<string> {
         const assetJSON = await ctx.stub.getState(id); // get the asset from chaincode state
         if (!assetJSON || assetJSON.length === 0) {
             throw new Error(`The asset ${id} does not exist`);
@@ -84,14 +88,15 @@ export class AssetTransfer extends Contract {
     }
 
     // updateAsset updates an existing asset in the world state with provided parameters.
-    public async updateAsset(ctx: Context, id: string, color: string, size: number, owner: string, appraisedValue: number) {
+    @Transaction()
-        const exists = await this.assetExists(ctx, id);
+    public async UpdateAsset(ctx: Context, id: string, color: string, size: number, owner: string, appraisedValue: number) {
+        const exists = await this.AssetExists(ctx, id);
         if (!exists) {
             throw new Error(`The asset ${id} does not exist`);
         }
 
         // overwritting original asset with new asset
-        let updatedAsset = {
+        const updatedAsset = {
             ID: id,
             Color: color,
             Size: size,
@@ -103,8 +108,9 @@ export class AssetTransfer extends Contract {
     }
 
     // deleteAsset deletes an given asset from the world state.
-    public async deleteAsset(ctx: Context, id: string) {
+    @Transaction()
-        const exists = await this.assetExists(ctx, id);
+    public async DeleteAsset(ctx: Context, id: string) {
+        const exists = await this.AssetExists(ctx, id);
         if (!exists) {
             throw new Error(`The asset ${id} does not exist`);
         }
@@ -113,7 +119,9 @@ export class AssetTransfer extends Contract {
     }
 
     // assetExists returns true when asset with given ID exists in world state.
-    public async assetExists(ctx: Context, id: string): Promise<boolean> {
+    @Transaction(false)
+    @Returns('boolean')
+    public async AssetExists(ctx: Context, id: string): Promise<boolean> {
         const assetJSON = await ctx.stub.getState(id);
         if (!assetJSON || assetJSON.length === 0) {
             return false;
@@ -122,20 +130,22 @@ export class AssetTransfer extends Contract {
     }
 
     // transferAsset updates the owner field of asset with given id in the world state.
-    public async transferAsset(ctx: Context, id: string, newOwner: string) {
+    @Transaction()
-        let assetString = await this.readAsset(ctx, id);
+    public async TransferAsset(ctx: Context, id: string, newOwner: string) {
+        const assetString = await this.ReadAsset(ctx, id);
 
-        let asset = JSON.parse(assetString);
+        const asset = JSON.parse(assetString);
         asset.Owner = newOwner;
 
         await ctx.stub.putState(id, Buffer.from(JSON.stringify(asset)));
     }
 
     // getAllAssets returns all assets found in the world state.
-    public async getAllAssets(ctx: Context): Promise<string> {
+    @Transaction(false)
+    public async GetAllAssets(ctx: Context): Promise<string> {
         const allResults = [];
         // range query with empty string for startKey and endKey does an open-ended query of all assets in the chaincode namespace.
-        for await (const { key, value } of ctx.stub.getStateByRange("", "")) {
+        for await (const { key, value } of ctx.stub.getStateByRange('', '')) {
             const strValue = Buffer.from(value).toString('utf8');
             let record;
             try {

asset-transfer-basic/chaincode-typescript/tsconfig.json

@@ -5,6 +5,8 @@
         "moduleResolution": "node",
         "module": "commonjs",
         "declaration": true,
+        "experimentalDecorators": true,
+        "emitDecoratorMetadata": true,
         "sourceMap": true
     },
     "include": [

asset-transfer-basic/chaincode-typescript/tslint.json

@@ -15,7 +15,10 @@
         "no-string-throw": true,
         "no-var-keyword": true,
         "no-trailing-whitespace": true,
-        "object-literal-key-quotes": [true, "as-needed"]
+        "object-literal-key-quotes": [true, "as-needed"],
+        "object-literal-sort-keys": false,
+        "max-line-length": false,
+        "prefer-for-of": false
     },
     "rulesDirectory": []
 }