Set-Cookie support in http

azure-functions-language-worker-protobuf/src/proto/FunctionRpc.proto

@@ -11,6 +11,7 @@ package AzureFunctionsRpcMessages;
 
 import "google/protobuf/duration.proto";
 import "identity/ClaimsIdentityRpc.proto";
+import "shared/NullableTypes.proto";
 
 // Interface exported by the server.
 service FunctionRpc {
@@ -375,6 +376,44 @@ message RpcException {
   string message = 2;
 }
 
+// Http cookie type. Note that only name and value are used for Http requests
+message RpcHttpCookie {
+  // Enum that lets servers require that a cookie shouoldn't be sent with cross-site requests
+  enum SameSite {
+      None = 0;
+      Lax = 1;
+      Strict = 2;
+  }
+
+  // Cookie name
+  string name = 1;
+
+  // Cookie value
+  string value = 2;
+
+  // Specifies allowed hosts to receive the cookie
+  NullableString domain = 3;
+
+  // Specifies URL path that must exist in the requested URL
+  NullableString path = 4;
+
+  // Sets the cookie to expire at a specific date instead of when the client closes.
+  // It is generally recommended that you use "Max-Age" over "Expires".
+  NullableTimestamp expires = 5;
+
+  // Sets the cookie to only be sent with an encrypted request
+  NullableBool secure = 6;
+
+  // Sets the cookie to be inaccessible to JavaScript's Document.cookie API
+  NullableBool http_only = 7;
+
+  // Allows servers to assert that a cookie ought not to be sent along with cross-site requests
+  SameSite same_site = 8;
+
+  // Number of seconds until the cookie expires. A zero or negative number will expire the cookie immediately.
+  NullableDouble max_age = 9;
+}
+
 // TODO - solidify this or remove it
 message RpcHttp {
   string method = 1;
@@ -387,4 +426,5 @@ message RpcHttp {
   bool enable_content_negotiation= 16;
   TypedData rawBody = 17;
   repeated RpcClaimsIdentity identities = 18;
+  repeated RpcHttpCookie cookies = 19;
 }

azure-functions-language-worker-protobuf/src/proto/identity/ClaimsIdentityRpc.proto

@@ -1,7 +1,7 @@
 syntax = "proto3";
 // protobuf vscode extension: https://marketplace.visualstudio.com/items?itemName=zxh404.vscode-proto3
 
-import "shared/NullableString.proto";
+import "shared/NullableTypes.proto";
 
 // Light-weight representation of a .NET System.Security.Claims.ClaimsIdentity object.
 // This is the same serialization as found in EasyAuth, and needs to be kept in sync with

azure-functions-language-worker-protobuf/src/proto/shared/NullableTypes.proto

@@ -0,0 +1,28 @@
+syntax = "proto3";
+// protobuf vscode extension: https://marketplace.visualstudio.com/items?itemName=zxh404.vscode-proto3
+
+import "google/protobuf/timestamp.proto";
+
+message NullableString {
+	oneof string {
+		string value = 1;
+	}
+}
+
+message NullableDouble {
+	oneof double {
+		double value = 1;
+	}
+}
+
+message NullableBool {
+	oneof bool {
+		bool value = 1;
+	}
+}
+
+message NullableTimestamp {
+	oneof timestamp {
+		google.protobuf.Timestamp value = 1;
+	}
+}

src/Context.ts

@@ -1,5 +1,5 @@
 import { FunctionInfo } from './FunctionInfo';
-import { fromRpcHttp, fromTypedData, getNormalizedBindingData, getBindingDefinitions } from './Converters';
+import { fromRpcHttp, fromTypedData, getNormalizedBindingData, getBindingDefinitions } from './converters';
 import { AzureFunctionsRpcMessages as rpc } from '../azure-functions-language-worker-protobuf/src/rpc';
 import { Request, RequestProperties } from './http/Request';
 import { Response } from './http/Response';
@@ -59,7 +59,8 @@ class InvocationContext implements Context {
     this.bindings = {};
     let _done = false;
     let _promise = false;
-
+
+    // Log message that is tied to function invocation
     this.log = Object.assign(
       <ILog>(...args: any[]) => logWithAsyncCheck(_done, logCallback, LogLevel.Information, executionContext, ...args),
       {
@@ -86,6 +87,7 @@ class InvocationContext implements Context {
       }
       _done = true;
 
+      // Allow HTTP response from context.res if HTTP response is not defined from the context.bindings object
       if (info.httpOutputName && this.res && this.bindings[info.httpOutputName] === undefined) {
         this.bindings[info.httpOutputName] = this.res;
       }

src/FunctionInfo.ts

@@ -1,5 +1,7 @@
 import { AzureFunctionsRpcMessages as rpc } from '../azure-functions-language-worker-protobuf/src/rpc';
-import { toTypedData, toRpcHttp } from './Converters';
+import { toTypedData, toRpcHttp } from './converters';
+
+const returnBindingKey = "$return";
 
 export class FunctionInfo {
   public name: string;
@@ -35,4 +37,9 @@ export class FunctionInfo {
         });
     }
   }
+
+  /** Return output binding details on the special key "$return" output binding */
+  public getReturnBinding() {
+    return this.outputBindings[returnBindingKey];
+  }
 }

src/WorkerChannel.ts

@@ -4,7 +4,7 @@ import Status = rpc.StatusResult.Status;
 import { IFunctionLoader } from './FunctionLoader';
 import { CreateContextAndInputs, LogCallback, ResultCallback } from './Context';
 import { IEventStream } from './GrpcService';
-import { toTypedData } from './Converters';
+import { toTypedData } from './converters';
 import { systemError, systemLog } from './utils/Logger';
 
 /**
@@ -137,18 +137,24 @@ export class WorkerChannel implements IWorkerChannel {
         invocationId: msg.invocationId,
         result: this.getStatus(err)
       }
-      if (result) {
-        if (result.return) {
-          response.returnValue = toTypedData(result.return);
-        }
-        if (result.bindings) {
-          response.outputData = Object.keys(info.outputBindings)
-            .filter(key => result.bindings[key] !== undefined)
-            .map(key => <rpc.IParameterBinding>{
-              name: key,
-              data: info.outputBindings[key].converter(result.bindings[key])
-            });
+
+      try {
+        if (result) {
+          if (result.return) {
+            let returnBinding = info.getReturnBinding();
+            response.returnValue = returnBinding ? returnBinding.converter(result.return) : toTypedData(result.return);
+          }
+          if (result.bindings) {
+            response.outputData = Object.keys(info.outputBindings)
+              .filter(key => result.bindings[key] !== undefined)
+              .map(key => <rpc.IParameterBinding>{
+                name: key,
+                data: info.outputBindings[key].converter(result.bindings[key])
+              });
+          }
         }
+      } catch (e) {
+        response.result = this.getStatus(e)
       }
 
       this._eventStream.write({

src/converters/BindingConverters.ts

@@ -0,0 +1,58 @@
+import { AzureFunctionsRpcMessages as rpc } from '../../azure-functions-language-worker-protobuf/src/rpc';
+import { FunctionInfo } from '../FunctionInfo';
+import { Dict } from '../Context';
+import { BindingDefinition } from '../public/Interfaces';
+import { fromTypedData } from './RpcConverters';
+
+type BindingDirection = 'in' | 'out' | 'inout' | undefined;
+
+export function getBindingDefinitions(info: FunctionInfo): BindingDefinition[] {
+  let bindings = info.bindings;
+  if (!bindings) {
+    return [];
+  }
+
+  return Object.keys(bindings)
+    .map(name => { return { 
+        name: name,
+        type: bindings[name].type || "", 
+        direction: getDirectionName(bindings[name].direction)
+      }; 
+    });
+}
+
+export function getNormalizedBindingData(request: rpc.IInvocationRequest): Dict<any> {
+  let bindingData: Dict<any> = {
+    invocationId: request.invocationId
+  };
+  // node binding data is camel cased due to language convention
+  if (request.triggerMetadata) {
+    Object.assign(bindingData, convertKeysToCamelCase(request.triggerMetadata))
+  }
+  return bindingData;
+}
+
+function getDirectionName(direction: rpc.BindingInfo.Direction|null|undefined): BindingDirection {
+  let directionName = Object.keys(rpc.BindingInfo.Direction).find(k => rpc.BindingInfo.Direction[k] === direction);
+  return isBindingDirection(directionName)? directionName as BindingDirection : undefined;
+}
+
+function isBindingDirection(input: string | undefined): boolean {
+  return (input == 'in' || input == 'out' || input == 'inout')
+}
+
+// Recursively convert keys of objects to camel case
+function convertKeysToCamelCase(obj: any) {
+  var output = {};
+  for (var key in obj) {
+      let value = fromTypedData(obj[key]) || obj[key];
+      let camelCasedKey = key.charAt(0).toLocaleLowerCase() + key.slice(1);
+      // If the value is a JSON object (and not array and not http, which is already cased), convert keys to camel case
+      if (!Array.isArray(value) && typeof value === 'object' && value && value.http == undefined) {
+        output[camelCasedKey] = convertKeysToCamelCase(value);
+      } else {
+        output[camelCasedKey] = value;
+    }
+  }
+  return output;
+}