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import {
DeleteMessageBatchCommand,
ReceiveMessageCommand,
SQSClient,
} from "@aws-sdk/client-sqs";
import { WidgetRequestRetriever } from ".";
import { TracingLogger } from "@/shared/log";
import { WidgetRequest, WidgetRequestT } from "@/shared/schema";
export class SQSWidgetRequestRetriever implements WidgetRequestRetriever {
static MESSAGES_PER_POLL = 10;
private queueUrl: string;
private sqsClient: SQSClient;
private logger: TracingLogger;
constructor(queueUrl: string, sqsClient: SQSClient, logger: TracingLogger) {
this.queueUrl = queueUrl;
this.sqsClient = sqsClient;
this.logger = logger;
}
public async refreshRequests() {
const retrieveMessagesRequest = new ReceiveMessageCommand({
QueueUrl: this.queueUrl,
MaxNumberOfMessages: SQSWidgetRequestRetriever.MESSAGES_PER_POLL,
});
this.logger.info(
`looking for Messages=(${SQSWidgetRequestRetriever.MESSAGES_PER_POLL}) WidgetRequest's from Queue=(${this.queueUrl})`,
);
const response = await this.sqsClient.send(retrieveMessagesRequest);
if (!response.Messages) {
this.logger.info(`Queue=(${this.queueUrl}) returned no messages!`);
return [];
}
const widgetRequests = response.Messages.map((message) => {
if (message.Body) return WidgetRequest.parse(JSON.parse(message.Body));
}).filter((x) => x) as WidgetRequestT[];
this.logger.info(
`found WidgetRequests=(${widgetRequests.length}) requests`,
);
const messageDeleteInputs = response.Messages.map(
({ ReceiptHandle, MessageId }) => {
return { Id: MessageId, ReceiptHandle };
},
);
this.logger.info(
`requesting deletion of Inputs=(${messageDeleteInputs.length})`,
);
const deleteRequestCommand = new DeleteMessageBatchCommand({
QueueUrl: this.queueUrl,
Entries: messageDeleteInputs,
});
await this.sqsClient.send(deleteRequestCommand);
return widgetRequests;
}
}
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