add extensions api (#800)

sdk/typescript/lib/index.ts

@@ -1,13 +1,14 @@
 import { RadixNetworkConfigById } from './helpers/networks'
 import {
   ConfigurationParameters,
+  ExtensionsApi,
   StateApi,
   StatisticsApi,
   StatusApi,
   StreamApi,
   TransactionApi,
 } from './generated'
-import { State, Statistics, Status, Stream, Transaction } from './subapis'
+import { Extensions, State, Statistics, Status, Stream, Transaction } from './subapis'
 import { RuntimeConfiguration } from './runtime'
 import { normalizeBasePath } from './helpers/normalize-base-path'
 import { SDK_VERSION } from './constants'
@@ -88,13 +89,15 @@ export class GatewayApiClient {
   status: Status
   transaction: Transaction
   statistics: Statistics
+  extensions: Extensions
 
   private lowLevel: {
     state: StateApi
     stream: StreamApi
     status: StatusApi
     transaction: TransactionApi
     statistics: StatisticsApi
+    extensions: ExtensionsApi
   }
 
   constructor(configuration: RuntimeConfiguration) {
@@ -104,12 +107,14 @@ export class GatewayApiClient {
       status: new StatusApi(configuration),
       transaction: new TransactionApi(configuration),
       statistics: new StatisticsApi(configuration),
+      extensions: new ExtensionsApi(configuration),
     }
 
     this.state = new State(this.lowLevel.state, configuration)
     this.stream = new Stream(this.lowLevel.stream)
     this.status = new Status(this.lowLevel.status)
     this.transaction = new Transaction(this.lowLevel.transaction)
     this.statistics = new Statistics(this.lowLevel.statistics, configuration)
+    this.extensions = new Extensions(this.lowLevel.extensions)
   }
 }

sdk/typescript/lib/subapis/extensions.ts

@@ -0,0 +1,17 @@
+import { ExtensionsApi, ResourceHoldersResponse } from "../generated";
+
+export class Extensions {
+  constructor(public innerClient: ExtensionsApi) { }
+
+  /**
+   * Get holders of a specific resource
+   */
+  getResourceHolders(resourceAddress: string, cursor?: string): Promise<ResourceHoldersResponse> {
+    return this.innerClient.resourceHoldersPage({
+      resourceHoldersRequest: {
+        resource_address: resourceAddress,
+        cursor
+      }
+    })
+  }
+}

sdk/typescript/lib/subapis/index.ts

@@ -2,4 +2,5 @@ export * from './state'
 export * from './statistics'
 export * from './status'
 export * from './stream'
-export * from './transaction'
+export * from './transaction'
+export * from './extensions'