iot-serverless-websockets-react-boilerplate | This is the source code for the Serverless AWS IoT tutorial | Serverless library
kandi X-RAY | iot-serverless-websockets-react-boilerplate Summary
kandi X-RAY | iot-serverless-websockets-react-boilerplate Summary
This is the source code for the Serverless AWS IoT tutorial. It's a WebSockets chat app demonstration. The back-end is built on AWS Lambda using the Serverless Framework. The front-end is built on ReactJS using Bootstrap and Create React App. Read below for how to set it up.
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QUESTION
Not able to figure out why in upload.js file in the below code snippet is throwing me an error: app.get is not a function.
I have an index.js file where I have configured everything exported my app by module.exports = app and also I have app.set("upload") in it, but when I am trying to import app in upload.js file and using it, it is giving an error error: app.get is not a function.
below is the code of the index.js
...ANSWER
Answered 2022-Mar-23 at 08:55The problem is that you have a circular dependency.
App requires upload, upload requires app.
Try to pass app as a parameter and restructure upload.js to look like:
QUESTION
Edit: Changed title to reflect the problem properly.
I am trying to pick the exact type definition of a specific property inside a interface, but the property is a mapped type [key: string]: . I tried accessing it using T[keyof T] because it is the only property inside that type but it returns never type instead.
is there a way to like Pick or Interface[[key: string]] to extract the type?
The interface I am trying to access is type { AWS } from '@serverless/typescript';
ANSWER
Answered 2022-Feb-27 at 19:04You can use indexed access types here. If you have an object-like type T and a key-like type K which is a valid key type for T, then T[K] is the type of the value at that key. In other words, if you have a value t of type T and a value k of type K, then t[k] has the type T[K].
So the first step here is to get the type of the functions property from the AWS type:
QUESTION
based on the aws documentation, maximum timeout limit is less that 30 seconds in api gateway.so hooking up an sagemaker endpoint with api gateway wouldn't make sense, if the request/response is going to take more than 30 seconds. is there any workaround ? adding a lambda in between api gateway and sagemaker endpoint is going to add more time to process request/response, which i would like to avoid. also, there will be added time for lambda cold starts and sagemaker serverless endpoints are built on top of lambda so that will also add cold start time. is there a way to invoke the serverless sagemaker endpoints , without these overhead?
...ANSWER
Answered 2022-Feb-25 at 08:19You can connect SageMaker endpoints to API Gateway directly, without intermediary Lambdas, using mapping templates https://aws.amazon.com/fr/blogs/machine-learning/creating-a-machine-learning-powered-rest-api-with-amazon-api-gateway-mapping-templates-and-amazon-sagemaker/
You can also invoke endpoints with AWS SDKs (eg CLI, boto3), no need to do it for API GW necessarily.
QUESTION
I am trying to submit google dataproc batch job. As per documentation Batch Job, we can pass subnetwork as parameter. But when use, it give me
ERROR: (gcloud.dataproc.batches.submit.spark) unrecognized arguments: --subnetwork=
Here is gcloud command I have used,
...ANSWER
Answered 2022-Feb-01 at 11:28According to dataproc batches docs, the subnetwork URI needs to be specified using argument --subnet.
Try:
QUESTION
I have created a SAM template with a function in it. After deploying SAM the lambda function gets added and are also displayed while adding lambda function trigger in cognito but when I save it gives a 404 error.
SAM template
...ANSWER
Answered 2021-Dec-24 at 11:44You can change to old console, set lambda trigger, it's worked. Then you can change to new console again.
QUESTION
Im using Serverless Framework to deploy a Docker image running R to an AWS Lambda.
...ANSWER
Answered 2021-Dec-15 at 23:26The way your events.http is configured looks wrong. Try replacing it with:
QUESTION
I'd like to use CockroachDB Serverless for my Ecto application. How do I specify the connection string?
I get an error like this when trying to connect.
...ANSWER
Answered 2021-Oct-28 at 00:48This configuration allows Ecto to connect to CockroachDB Serverless correctly:
QUESTION
I have created a RDS cluster with 2 instances using terraform. When I am upgrading the RDS from front-end, it modifies the cluster. But when I do the same using terraform, it destroys the instance.
We tried create_before_destroy, and it gives error.
We tried with ignore_changes=engine but that didn't make any changes.
Is there any way to prevent it?
...ANSWER
Answered 2021-Oct-30 at 13:04Terraform is seeing the engine version change on the instances and is detecting this as an action that forces replacement.
Remove (or ignore changes to) the engine_version input for the aws_rds_cluster_instance resources.
AWS RDS upgrades the engine version for cluster instances itself when you upgrade the engine version of the cluster (this is why you can do an in-place upgrade via the AWS console).
By excluding the engine_version input, Terraform will see no changes made to the aws_rds_cluster_instances and will do nothing.
AWS will handle the engine upgrades for the instances internally.
If you decide to ignore changes, use the ignore_changes argument within a lifecycle block:
QUESTION
ANSWER
Answered 2021-Nov-02 at 10:00Converted all imports to require() and all exports to module.exports
Removed "type": "module" from package.json
Everything works like a charm. It is not a solution to the question asked but making things work became more important.
QUESTION
We are a team of 5 developers working on a video rendering implementation. This implementation consists out of two parts.
- A live video preview in the browser using angular + konva.
- A node.js (node 14) serverless (AWS lambda container) implementation using konva-node that pipes frames to ffmpeg for rendering a mp4 video in higher quality for later download.
Both ways are working for us. Now we extracted the parts of the animation that are the same for frontend and backend implementation to an internal library. We imported them in BE and FE. That also works nicely for most parts.
We noticed here that konva-node is deprecated since a short time. Documentation says to use canvas + konva instead on node.js. But this just doesn't work. If we don't use konva-node we cannot create a stage without a 'container' value. Also we cannot create a raw image buffer anymore, because stage.toCanvas() actually returns a HTMLCanvas, which does not have this functionality.
- So what does konva-node actually do to konva API?
- Is node.js still supported after deprecation of konva-node?
- How can we get
toBuffer()andnew Stage()functionality without konva-node in node.js?
ANSWER
Answered 2021-Sep-27 at 21:36So what does konva-node actually do to konva API?
It slightly patches Konva code to use canvas nodejs library to use 2d canvas API. So, Konva will not use browser DOM API.
Is node.js still supported after deprecation of konva-node?
Yes. https://github.com/konvajs/konva#4-nodejs-env
How can we get toBuffer() and new Stage() functionality without konva-node in node.js?
You can try to use this:
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Install iot-serverless-websockets-react-boilerplate
Log in into your AWS account or set up one https://aws.amazon.com/premiumsupport/knowledge-center/create-and-activate-aws-account/
Create serverless-deployer IAM user Navigate IAM -> Users and click "Add User" Set "User name" to serverless-deployer Set "Access type" to "Programmatic access" and click "Next" Click "Attach existing policies directly" Select "AdministratorAccess" from the list and click "Next" Review information and click "Create user" Click "Download .csv"
Create iot-connector IAM user Navigate IAM -> Users and click "Add User" Set "User name" to iot-connector Set "Access type" to "Programmatic access" and click "Next" Click "Attach existing policies directly" Select "AWSIoTDataAccess" from the list and click "Next" Review information and click "Create user" Click "Download .csv"
Create a folder for the project: mkdir serverless-aws-iot; cd serverless-aws-iot
Clone the repository: git clone https://github.com/gettechtalent/REPO-LINK-HERE.git
Navigate to the back-end folder: cd backend. Install serverless: npm install -g serverless. Configure serverless from the serverless-deployer .csv file serverless config credentials --provider aws --key <Access key ID> --secret <Secret access key> --profile serverless-demo. Edit serverless.yml. Under the provider section set the region to where your AWS Lambda functions will live. Also, make sure to set the IOT_AWS_REGION environment variable in the same file. Set IOT_ACCESS_KEY and IOT_SECRET_KEY from the iot-connector .csv file. In the AWS console navigate to AWS IoT -> Settings. Set the IOT_ENDPOINT_HOST variable in the serverless.yml to the Endpoint that you see on the page. Install serverless: npm install -g serverless. Install the dependencies: npm install.
Navigate to the back-end folder: cd backend
Install serverless: npm install -g serverless
Configure serverless from the serverless-deployer .csv file serverless config credentials --provider aws --key <Access key ID> --secret <Secret access key> --profile serverless-demo
Edit serverless.yml. Under the provider section set the region to where your AWS Lambda functions will live. Also, make sure to set the IOT_AWS_REGION environment variable in the same file.
Set IOT_ACCESS_KEY and IOT_SECRET_KEY from the iot-connector .csv file
In the AWS console navigate to AWS IoT -> Settings. Set the IOT_ENDPOINT_HOST variable in the serverless.yml to the Endpoint that you see on the page.
Install serverless: npm install -g serverless
Install the dependencies: npm install
Start up the lambdas locally: serverless offline --port 8080 start. You should see something like this:
Navigate in the browser to localhost:8080/iot-presigned-url. You should see something like this: {"url":"wss://3kdfgh39sdfyrte.iot.eu-west-1.amazonaws.com/mqtt?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=DSJHGRJWFICUIYWEFSSD%2F20170529%2Feu-west-1%2Fiotdevicegateway%2Faws4_request&X-Amz-Date=20170529T063531Z&X-Amz-Expires=86400&X-Amz-SignedHeaders=host&X-Amz-Signature=435876t863fd8fk43jtygdf34598e9ghdrt439g8rytk34hfd9854y3489tfydee"}
Navigate to the front-end folder: cd ../frontend. Install the dependencies: npm install.
Navigate to the front-end folder: cd ../frontend
Install the dependencies: npm install
Start up the front-end locally: npm start. You should see something like this:
Navigate in the browser to localhost:3000. You should see the Serverless IoT WebSockets chat app in action.
Feel free to open several browser tabs with the app and send some chat messages. You will see Connected users as well as Messages sections populated.
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