Dc/sdk bindings

src/app.ts

@@ -78,6 +78,14 @@ function convertToGenericOptions<T extends Omit<FunctionOptions, 'trigger'> & Pa
     };
 }
 
+function addDeferredBindingsFlag(triggerType: string): { [key: string]: string } {
+    if (triggerType === 'blobTrigger') {
+        return { supportsDeferredBinding: 'true' };
+    }
+
+    return { supportsDeferredBinding: 'false' };
+}
+
 export function get(name: string, optionsOrHandler: HttpMethodFunctionOptions | HttpHandler): void {
     http(name, convertToHttpOptions(optionsOrHandler, 'GET'));
 }
@@ -152,6 +160,7 @@ export function generic(name: string, options: GenericFunctionOptions): void {
         ...trigger,
         direction: 'in',
         type: isTrigger(trigger.type) ? trigger.type : trigger.type + 'Trigger',
+        properties: addDeferredBindingsFlag(options.trigger.type),
     };
 
     if (options.extraInputs) {

src/converters/fromRpcTypedData.ts

@@ -3,6 +3,7 @@
 
 import { RpcTypedData } from '@azure/functions-core';
 import { HttpRequest } from '../http/HttpRequest';
+import { ConnectionInfo } from '../utils/ConnectionInfo';
 import { isDefined } from '../utils/nonNull';
 
 export function fromRpcTypedData(data: RpcTypedData | null | undefined): unknown {
@@ -30,6 +31,8 @@ export function fromRpcTypedData(data: RpcTypedData | null | undefined): unknown
         return data.collectionDouble.double;
     } else if (data.collectionSint64 && isDefined(data.collectionSint64.sint64)) {
         return data.collectionSint64.sint64;
+    } else if (data.modelBindingData && isDefined(data.modelBindingData.content)) {
+        return new ConnectionInfo(data.modelBindingData);
     } else {
         return undefined;
     }

src/index.ts

@@ -14,4 +14,5 @@ export * as input from './input';
 export { InvocationContext } from './InvocationContext';
 export * as output from './output';
 export * as trigger from './trigger';
+export { ConnectionInfo } from './utils/ConnectionInfo';
 export { Disposable } from './utils/Disposable';

src/utils/ConnectionInfo.ts

@@ -0,0 +1,26 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the MIT License.
+
+import { ModelBindingData } from '@azure/functions-core';
+
+export interface ConnectionInfoContent {
+    Connection: string;
+    ContainerName: string;
+    BlobName: string;
+}
+
+export class ConnectionInfo {
+    version: string;
+    source: string;
+    contentType: string;
+    content: ConnectionInfoContent | undefined;
+
+    constructor(modelBindingData: ModelBindingData) {
+        this.version = modelBindingData.version as string;
+        this.source = modelBindingData.source as string;
+        this.contentType = modelBindingData.contentType as string;
+        this.content = modelBindingData.content
+            ? (JSON.parse(modelBindingData.content.toString()) as ConnectionInfoContent)
+            : undefined;
+    }
+}

types-core/index.d.ts

@@ -353,12 +353,18 @@ declare module '@azure/functions-core' {
         direction?: RpcBindingDirection | null;
 
         dataType?: RpcBindingDataType | null;
+
+        properties?: RpcBindingProperties | null;
     }
 
     type RpcBindingDirection = 'in' | 'out' | 'inout';
 
     type RpcBindingDataType = 'undefined' | 'string' | 'binary' | 'stream';
 
+    interface RpcBindingProperties {
+        supportsDeferredBinding?: 'true' | 'false' | null;
+    }
+
     interface RpcRetryOptions {
         maxRetryCount?: number | null;
 
@@ -395,24 +401,33 @@ declare module '@azure/functions-core' {
         collectionDouble?: RpcCollectionDouble | null;
 
         collectionSint64?: RpcCollectionSInt64 | null;
+
+        modelBindingData?: ModelBindingData | null;
     }
 
-    interface RpcCollectionSInt64 {
-        sint64?: (number | Long)[] | null;
+    interface RpcCollectionBytes {
+        bytes?: Uint8Array[] | null;
     }
 
     interface RpcCollectionString {
         string?: string[] | null;
     }
 
-    interface RpcCollectionBytes {
-        bytes?: Uint8Array[] | null;
-    }
-
     interface RpcCollectionDouble {
         double?: number[] | null;
     }
 
+    interface RpcCollectionSInt64 {
+        sint64?: (number | Long)[] | null;
+    }
+
+    interface ModelBindingData {
+        content?: Buffer | null;
+        contentType?: string | null;
+        source?: string | null;
+        version?: string | null;
+    }
+
     interface RpcInvocationRequest {
         invocationId?: string | null;
 

types/connectionInfo.d.ts

@@ -0,0 +1,24 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the MIT License.
+
+export interface ModelBindingData {
+    content?: Buffer | null;
+    contentType?: string | null;
+    source?: string | null;
+    version?: string | null;
+}
+
+export interface ConnectionInfoContent {
+    Connection: string;
+    ContainerName: string;
+    BlobName: string;
+}
+
+export declare class ConnectionInfo {
+    version: string;
+    source: string;
+    contentType: string;
+    content: ConnectionInfoContent | undefined;
+
+    constructor(modelBindingData: ModelBindingData);
+}

types/index.d.ts

@@ -4,6 +4,7 @@
 import { InvocationContext } from './InvocationContext';
 
 export * as app from './app';
+export * from './connectionInfo';
 export * from './cosmosDB';
 export * from './cosmosDB.v3';
 export * from './cosmosDB.v4';