appsync-refarch-realtime | AWS AppSync Real-Time Reference Architecture | Serverless library
kandi X-RAY | appsync-refarch-realtime Summary
kandi X-RAY | appsync-refarch-realtime Summary
The AWS AppSync Serverless GraphQL real-time reference architecture showcases different types of real-time data broadcasting using GraphQL subscriptions over WebSockets:.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Function that registers a new swagger service and returns it .
- Register a service worker
- Checks and reloads the service to see if we re ready .
- Unregisters the service worker
appsync-refarch-realtime Key Features
appsync-refarch-realtime Examples and Code Snippets
Community Discussions
Trending Discussions on Serverless
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_instance
s 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:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install appsync-refarch-realtime
Clone this repository: git clone https://github.com/aws-samples/appsync-refarch-realtime.git cd appsync-refarch-realtime
Install the required modules: npm install
Init the directory as an amplify Javascript project using the React framework: amplify init
Now it's time to provision your cloud resources based on the local setup and configured features, execute the following command accepting all default options: amplify push Wait for the provisioning to complete. Once done, a src/aws-exports.js file with the resources information is created.
Execute the following command in a shell terminal and add your free for non-commercial use TMDb API Key (refer to Prerequisites): export TMDB_API_KEY=<YOUR TMDB API KEY HERE>
Execute the following commands in a shell terminal to set up additional environment variables as well as configure IAM authentication: export AWS_REGION=$(jq -r '.providers.awscloudformation.Region' amplify/#current-cloud-backend/amplify-meta.json) export GRAPHQL_API_ID=$(jq -r '.api[(.api | keys)[0]].output.GraphQLAPIIdOutput' ./amplify/#current-cloud-backend/amplify-meta.json) export GRAPHQL_API_NAME=$(aws appsync get-graphql-api --api-id $GRAPHQL_API_ID --region $AWS_REGION | jq -r '.graphqlApi.name') export GRAPHQL_ENDPOINT=$(sed -n 's/.*"aws_appsync_graphqlEndpoint": "\(.*\)".*/\1/p' src/aws-exports.js) export UNAUTH_ROLE=$(jq -r '.providers.awscloudformation.UnauthRoleName' amplify/#current-cloud-backend/amplify-meta.json) export ID_POOL_ID=$(sed -n 's/.*"aws_cognito_identity_pool_id": "\(.*\)".*/\1/p' src/aws-exports.js) export ID_POOL_NAME=$(jq -r '.auth[(.auth | keys)[0]].output.IdentityPoolName' ./amplify/#current-cloud-backend/amplify-meta.json) export DEPLOYMENT_BUCKET_NAME=$(jq -r '.providers.awscloudformation.DeploymentBucketName' ./amplify/#current-cloud-backend/amplify-meta.json) export STACK_NAME=$(jq -r '.providers.awscloudformation.StackName' ./amplify/#current-cloud-backend/amplify-meta.json) aws cognito-identity update-identity-pool --identity-pool-id $ID_POOL_ID --identity-pool-name $ID_POOL_NAME --allow-unauthenticated-identities --region $AWS_REGION aws appsync update-graphql-api --api-id $GRAPHQL_API_ID --name $GRAPHQL_API_NAME --authentication-type AWS_IAM --region $AWS_REGION
Install the Lambda dependencies and deploy the backend with SAM: cd ./sam-app/get-movie;npm install; cd ../.. sam package --template-file ./sam-app/template.yaml --s3-bucket $DEPLOYMENT_BUCKET_NAME --output-template-file packaged.yaml --region $AWS_REGION export STACK_NAME_SAM="$STACK_NAME-lambda" sam deploy --template-file ./packaged.yaml --stack-name $STACK_NAME_SAM --capabilities CAPABILITY_IAM --parameter-overrides unauthRole=$UNAUTH_ROLE graphqlApi=$GRAPHQL_API_ID graphqlEndpoint=$GRAPHQL_ENDPOINT tmdbApiKey=$TMDB_API_KEY --region $AWS_REGION
Execute the following command to access and query your API directly from the AWS Console (or manually go to the AWS AppSync Console, access your API and open the Queries section): amplify console ? Please select the category or provider: api ? Please select from one of the below mentioned services: GraphQL
Execute the following mutation to create the data sctructure that will collect and store votes in the Reviews table: mutation { type1: createReviews( input: { id: 1, type: "love", votes: 0, topMovie: "N/A", topVotes: 0 } ) { id type votes topMovie topVotes } type2: createReviews( input: { id: 2, type: "like", votes: 0, topMovie: "N/A", topVotes: 0 } ) { id type votes topMovie topVotes } type3: createReviews( input: { id: 3, type: "meh", votes: 0, topMovie: "N/A", topVotes: 0 } ) { id type votes topMovie topVotes } type4: createReviews( input: { id: 4 type: "unknown" votes: 0 topMovie: "N/A" topVotes: 0 } ) { id type votes topMovie topVotes } type5: createReviews( input: { id: 5, type: "hate", votes: 0, topMovie: "N/A", topVotes: 0 } ) { id type votes topMovie topVotes } }
Finally, execute the following command to install your project package dependencies and run the application locally: amplify serve
Open different browsers and test realtime subscriptions. Alternativelly publish your application and use the public link: amplify add hosting amplify publish
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page