Anaconda875

anaconda875

3 questions

5 answers

anaconda875 Beginner

Asked At: 1672273173000 In: Programming

anaconda875 Beginner Asked At: 1672273173000 In: Programming

momentjs aws-lambda wrong timezone

I have this following node js code: <pre class="lang-js s-code-block"><code>let pureDate = new Date('2022-12-22T00:00:00.000Z') console.log(pureDate) let formatted1 = moment(pureDate).format('YYYY-MM-DDTHH:00:00+hh:mm') console.log(formatted1) let formatted2 = moment.utc(pureDate).local().format('YYYY-MM-DDTHH:00:00+hh:mm') console.log(formatted2) </code></pre> When I run it at my Windows 10 local machine (+07:00), it print to console: <pre class="lang-js s-code-block"><code>2022-12-22T00:00:00.000Z 2022-12-22T07:00:00+07:00 2022-12-22T07:00:00+07:00 </code></pre> Now I change timezone to +12:00 and rerun the code, it print: <pre class="lang-js s-code-block"><code>2022-12-22T00:00:00.000Z 2022-12-22T12:00:00+12:00 2022-12-22T12:00:00+12:00 </code></pre> Everything were fine Now I deploy it to aws lambda using cloudformation: <pre class="lang-js s-code-block"><code>Resources: timerHandler: Type: AWS::Serverless::Function Properties: Handler: src.timerHandler Runtime: nodejs16.x Environment: Variables: NODE_ENV: lc Timeout: 100 Events: ScheduledEvent: Type: Schedule Properties: Schedule: "rate(15 minutes)" </code></pre> After sometime, I access the log and see (please scroll to right-end): <pre class="lang-js s-code-block"><code>2022-12-22T22:47:04.451+07:00 2022-12-22T15:47:04.451Z e55ee401-87fd-4614-a7c6-971973ccccc6 INFO pureDate: 2022-12-22T00:00:00.000Z 2022-12-22T22:47:04.451+07:00 2022-12-22T15:47:04.451Z e55ee401-87fd-4614-a7c6-971973ccccc6 INFO formatted1: 2022-12-22T00:00:00+12:00 2022-12-22T22:47:04.451+07:00 2022-12-22T15:47:04.451Z e55ee401-87fd-4614-a7c6-971973ccccc6 INFO formatted2: 2022-12-22T00:00:00+12:00 </code></pre> The time 00:00:00 is correct, but the zone +12:00 is not. I would expect the formatted should be 2022-12-22T12:00:00+12:00 or 2022-12-22T00:00:00+00:00 This is zone information of the lambda execution: <pre class="lang-js s-code-block"><code>2022-12-22T23:46:32.052+07:00 2022-12-22T16:46:32.052Z f1d04019-44e7-463a-af1d-faf2a5043887 INFO zone_name: Africa/Abidjan 2022-12-22T23:46:32.052+07:00 2022-12-22T16:46:32.052Z f1d04019-44e7-463a-af1d-faf2a5043887 INFO timezone: GMT </code></pre> Is that the problem of momentjs, or my code, or lambda? How can I fix it? moment version: "^2.29.4"

1 Answers
1142 Views

Answer

anaconda875 Beginner

Asked At: 1672273044000 In: Programming

anaconda875 Beginner Asked At: 1672273044000 In: Programming

Sync to Async http request and response architecture

We are developing a REST service (2) that act as a adapter between a blackbox Client (1) and blackbox Processor microservices (4). (2) and (4) communicate with each other using Kafka (3) All components are stateless (except Kafka, right?) First, Client initial a command to REST service using http POST (sync), then REST service take this command and forward it to Processor ms (after doing some conversion) via Kafka (async). After this step, REST service will sleep (this http scope) and wait the result from Processor ms Then Processor ms handle this command and send the result back to REST service via Kafka (async). REST service wake up and and return the ResponseEntity to Client within same http scope. Now we decide to migrate (2) to microservice to take advantage of this architecture. And the problem occurred: instance 1 of (2) send command to (4), and (4) send the result to instance 2. But the http session is established between (1) and instance 1, and instance 2 cannot return to (1). This returning must be done by and only by instance 1. My first idea is, for example, let instance 1 be aware of the result from (4) no matter it was sent to which instance. But currently we have no solution to archive this idea. This is the diagram <img class="content-img" src="https://stackask.com/wp-content/uploads/2022/12/Untitled.png" /> We need a "non work-around" solution for this architecture. Please help. Thank you Note: we are unable to make change to blackbox components

architecture

1 Answers
1060 Views

Answer

anaconda875 Beginner

Asked At: 1669247037000 In: Spring

anaconda875 Beginner Asked At: 1669247037000 In: Spring

Spring weblux how to share data from Controller to Filter using Context

<div class="votecell post-layout--left"> <div class="js-voting-container d-flex jc-center fd-column ai-stretch gs4 fc-black-200"></div> </div> <div class="postcell post-layout--right"> <div class="s-prose js-post-body"> In controller I need to share some data to WebFilter (I don't want to use <code>ServerWebExchange.getAttributes().put("KEY", "VALUE")</code>, and my boss either), this is my current implemetation: <pre class="lang-java s-code-block"><code>@Component public class RequestFilter implements WebFilter { @Override public Mono<Void> filter(ServerWebExchange exchange, WebFilterChain chain) { exchange.getResponse().beforeCommit(() -> Mono.deferWithContext(c -> { //I CHECK WHETHER DATA SHARED FROM CONTROLLER EXIST OR NOT System.out.println(c.hasKey("abc")); Context innerContext = c.get("CONTEXT"); System.out.println(innerContext.hasKey("abc")); return Mono.empty(); })); ServerHttpRequest request = exchange.getRequest(); BodyCaptureExchange bodyCaptureExchange = new BodyCaptureExchange(exchange); return chain.filter(bodyCaptureExchange).subscriberContext(context -> { //HERE I PUT CONTEXT TO ITSELF context = context.put("CONTEXT", context); return context; }); } }</code> Here is my controller method:</pre> <pre class="lang-java s-code-block"><code>public Mono<ResponseEntity<Response>> post(@RequestBody Mono<Request> request) { Mono<ResponseEntity<Response>> responseEntityMono = request.flatMap( rq -> service.requestProcess(rq).map(res -> ResponseEntity.ok().body(res)) ).subscriberContext(c -> { //HERE I GET THE INNER CONTEXT FROM ABOVE FILTER Context innerContext = c.get("CONTEXT"); //PUT DATA TO IT c = c.put("CONTEXT", innerContext.put("abc", "abc")); //ALSO PUT DATA TO PARENT c = c.put("abc", "abc"); return c; }); return responseEntityMono; }</code> </pre> The System.out.println in RequestFilter print: <pre class="lang-java s-code-block"><code>false false </code></pre> Means that data I put from controller are lost when it come to Filter. Please correct me if I'm wrong somewhere. I really need your help Reactor version: 3.3.14 Spring boot stater webflux: 2.3.9.RELEASE </div> </div>