AWS AppSync lets you build data-driven apps with real-time and offline-first capabilities based on GraphQL with custom resolver support for DynamoDB, ElasticSearch, AWS Lambda, and Local datasources.
Questions tagged [aws-appsync]
1785 questions
0
votes
0 answers
AppSync subscription to an external data provider using Websockets
How can I setup a subscription to an external provider that provides me with streaming updates via Websockets or Kafka. I want the front to refresh in real-time based on data coming through the websocket or Kafka or Pulsar messages.
Sudeep Amin
- 101
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- 5
0
votes
2 answers
How can I publish event for subscribers in Appsync graphql
I am using Appsync subscription for pub/sub messages. I have read some articles about subscription (like: https://docs.aws.amazon.com/appsync/latest/devguide/real-time-data.html) and all of them mentioned about specifying a GraphQL schema directive…
Joey Yi Zhao
- 37,514
- 71
- 268
- 523
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how to define a resolver in appsync to get a range of data between a particular dates in graphQL
{
"version": "2018-05-29",
"operation": "Query",
"index": "sportLeague",
"query": {
"expression": "sportIdLeagueId = :sportIdLeagueId and gsSK = :gsSK",
"expressionValues": {
#set( $sportIdLeagueId =…
reema dass
- 33
- 7
0
votes
1 answer
How can I provide customised authentication for Appsync?
In appsync, there are 4 authorization mode, API Key, IAM, Cognito, OPEN ID. How can I make a customised one, like a lambda? Or how can I remove authorization at all which means it is open to public and I will do authorization in business layer?
Joey Yi Zhao
- 37,514
- 71
- 268
- 523
0
votes
1 answer
amplify android gradle build error EEXIST: file already exists, mkdir
I am trying to follow this tutorial for AWS Amplify Android.
I am sure I did everything mentioned over there.
This is how my Gradle files look like.
My project Gradle:
// Top-level build file where you can add configuration options common to all…
AwesomeGuy
- 9
- 5
0
votes
1 answer
Calling AWS AppSync graphql API from Lambda
I am trying to update the value of a table using the AWS-app sync graphql API,
I am able to create data and add it in a table using graphql mutation in lambda
but when I am trying to update the data its not working.
I am calling this lambda service…
Aditya toke
- 461
- 4
- 14
0
votes
1 answer
not understanding AWS Amplify authentication flow
I am trying to create a custom AWS Amplify authentication flow with code similar to the following taken from amazon's website:
import { Auth } from 'aws-amplify';
async function signUp() {
try {
const user = await Auth.signUp({
…
matt
- 213
- 4
- 7
0
votes
1 answer
AWS Appsync - fail to parse on subscription - expected non null value for _version
I have a Todo AppSync Android app with these as dependencies
implementation 'com.amazonaws:aws-android-sdk-appsync:2.9.+'
implementation 'org.eclipse.paho:org.eclipse.paho.client.mqttv3:1.2.0'
implementation…
user1521469
- 21
- 2
0
votes
1 answer
AWS AppSync get child results based on parent result
Im using GraphQL and DynamoDB with the adjacency list pattern, in that I am only using one table.
Say I have the schema -
type GrandParent {
id: ID!
children: [Parent]
}
type Parent {
id: ID!
children: [Child]
}
type Child {
id:…
andy mccullough
- 9,070
- 6
- 32
- 55
0
votes
2 answers
Not resolving AWSAppSyncClient class
I am trying to integrate an AWSAppSyncClient client into my Android project. I have added the relevant dependencies but not able to resolve:
import com.amazonaws.services.appsync.AWSAppSyncClient;
My app's build.gradle has:
apply plugin:…
Saurabh R
- 1
- 1
0
votes
1 answer
GraphQL query - suppress non-null error and return partial data
I'm using AppSync and DynamoDB. Is there a way to suppress the non-null error and return partial data for a graphql query whose result omits a non-null field? For example if I run the following query:
query GetPerson {
getPerson(id: "123") {
…
JMLdev
- 846
- 2
- 10
- 21
0
votes
1 answer
Aws-appsync Subscription with apollo-angular client
I am working with aws appsync for Grapql backend. But enable to use the Subscription feature on the client side using Apollo-angular though I am able to achieve mutations & query but not Subscription.
Code - https://stackblitz.com/edit/myapollo
Anzar Alim
- 47
- 8
0
votes
1 answer
Can AWS AppSync follow server based architecture?
I see it supports lambda which is serverless, can AppSync support server based architecture, where a dedicated server serves GraphQL requests ?
JBourne
- 335
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- 12
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votes
1 answer
Update only the given column value with appsync api and datasource as posgresql
I have created appsync api with postgresql as datasource. Now it's very straight to create , update and delete any record with graphql. But i want something like, whenever any update takes places , i can update value of that particular column only.…
Dharmendra Singh Negi
- 393
- 1
- 12
0
votes
1 answer
How to filter an AWSJSON object in AWS AppSync?
My APPSync is connected to a dynamodb table and the schema looks like this:
type Query {
getNews(date: String!): News
listNews(filter: TableNewsFilterInput, limit: Int, nextToken: String): NewsConnection
}
input TableNewsFilterInput {
…
Bhargava Macha
- 87
- 6