MacOS 10.14.6 Mojave.
Node v10.15.3
LocalStack - docker image 0.10.4

When invoking a Lambda from Node.js code.


    const lambda = new Aws.Lambda(creds);
    
    const payload = {};
    
    const clientContext = {
        invokedFunctionArn: this._workerArn
    };
    
    const params = {
        FunctionName: this._workerArn,
        InvocationType: "RequestResponse", // "DryRun",
        LogType: 'Tail', // "None", "Tail"
        ClientContext: JSON.stringify(clientContext),
        Payload: JSON.stringify(payload)
    };
    
    console.log(`DEBUG: Executing lambda ${JSON.stringify(params)}`);
    
    lambda.invoke(params, function (err, data) {
        console.log(`DEBUG: Printing lambda return arguments`);
        console.log(JSON.stringify(arguments));
        console.log(data.LogResult);
    });```
DEBUG: Printing lambda return arguments
{"0":null,"1":{"StatusCode":200,"Payload":"null"}}
undefined
```

Expecting to see the Lambda execution log in `data.LogResult`, but no such object returned,
yet Localstack Cloudwatch logs recorded the execution logs correctly.


```
EVENTS	75	1570381308926.664	+51733/05/27/[$LATEST]629146bb	START RequestId: dbd86068-78c8-1a62-29ca-9c0a4a8580c3 Version: $LATEST	1570381306039
EVENTS	76	1570381308926.664	+51733/05/27/[$LATEST]629146bb	2019-10-06T17:01:47.924Z	dbd86068-78c8-1a62-29ca-9c0a4a8580c3	INFO	DEBUG: LOCALSTACK_HOSTNAME=172.17.0.1	1570381306520
...
EVENTS	79	1570381308926.664	+51733/05/27/[$LATEST]629146bb	END RequestId: dbd86068-78c8-1a62-29ca-9c0a4a8580c3	1570381307961
EVENTS	80	1570381308926.664	+51733/05/27/[$LATEST]629146bb	REPORT RequestId: dbd86068-78c8-1a62-29ca-9c0a4a8580c3	Duration: 16.05 ms	Billed Duration: 100 ms	Memory Size: 1536 MB	Max Memory Used: 57 MB		1570381308442
```

What I'm missing? Why it doesn't return logs on invoke?

Thanks



┆Issue is synchronized with this [Jira Bug](https://localstack.atlassian.net/browse/LOC-125) by [Unito](https://www.unito.io/learn-more)

def forward_request(self, method, path, data, headers):
                records.append({'data': data, 'headers': headers})
                return 200
        records = []
        local_port = get_free_tcp_port()
        proxy = start_proxy(local_port, backend_url=None, update_listener=MyUpdateListener())
        items_before = len(records)
        _run_forward_to_fallback_url('%s://localhost:%s' % (get_service_protocol(), local_port))
        items_after = len(records)
        for record in records:
            self.assertIn('non-existing-lambda', record['headers']['lambda-function-name'])
        self.assertEqual(items_after, items_before + 3)
        proxy.stop()
    def test_adding_fallback_function_name_in_headers(self):
        lambda_client = aws_stack.connect_to_service('lambda')
        ddb_client = aws_stack.connect_to_service('dynamodb')
        db_table = 'lambda-records'
        config.LAMBDA_FALLBACK_URL = 'dynamodb://%s' % db_table
        lambda_client.invoke(FunctionName='non-existing-lambda',
                             Payload=b'{}', InvocationType='RequestResponse')
        result = run_safe(ddb_client.scan, TableName=db_table)
        self.assertEqual(result['Items'][0]['function_name']['S'], 'non-existing-lambda')
    def test_dead_letter_queue(self):
        sqs_client = aws_stack.connect_to_service('sqs')
        lambda_client = aws_stack.connect_to_service('lambda')
        
        queue_name = 'test-%s' % short_uid()