@nestjstools/messaging-amazon-sqs-extension
Version:
Extension to handle messages and dispatch them over Amazon SQS
82 lines • 4.12 kB
JavaScript
;
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.AmazonSqsMessagingConsumer = void 0;
const amazon_sqs_channel_1 = require("../channel/amazon-sqs.channel");
const messaging_1 = require("@nestjstools/messaging");
const common_1 = require("@nestjs/common");
const client_sqs_1 = require("@aws-sdk/client-sqs");
let AmazonSqsMessagingConsumer = class AmazonSqsMessagingConsumer {
channel = undefined;
async consume(dispatcher, channel) {
this.channel = channel;
const client = this.channel.client;
async function processPollMessages() {
const delay = (s) => new Promise((resolve) => setTimeout(resolve, s * 1000));
while (true) {
const receiveParams = {
QueueUrl: channel.config.queueUrl,
MaxNumberOfMessages: channel.config.maxNumberOfMessages,
WaitTimeSeconds: channel.config.waitTimeSeconds,
VisibilityTimeout: channel.config.visibilityTimeout,
MessageAttributeNames: ['All'],
};
const response = await client.send(new client_sqs_1.ReceiveMessageCommand(receiveParams));
if (response.Messages && response.Messages.length > 0) {
for (const message of response.Messages) {
const attrs = message.MessageAttributes;
const messageBody = message.Body;
const routingKey = attrs.messagingRoutingKey.StringValue;
await dispatcher.dispatch(new messaging_1.ConsumerMessage(JSON.parse(messageBody), routingKey));
const deleteParams = {
QueueUrl: channel.config.queueUrl,
ReceiptHandle: message.ReceiptHandle,
};
await client.send(new client_sqs_1.DeleteMessageCommand(deleteParams));
}
}
await delay(channel.config.waitTimeSeconds);
}
}
await this.createDeadLetterQueue(channel);
processPollMessages();
return Promise.resolve();
}
async onError(errored, channel) {
if (!channel.config.deadLetterQueue) {
return Promise.resolve();
}
const command = new client_sqs_1.SendMessageCommand({
QueueUrl: `${channel.config.queueUrl}_dead_letter`,
MessageBody: JSON.stringify(errored.dispatchedConsumerMessage.message),
MessageAttributes: {
messagingRoutingKey: {
DataType: 'String',
StringValue: errored.dispatchedConsumerMessage.routingKey,
},
},
});
await channel.client.send(command);
return Promise.resolve();
}
createDeadLetterQueue(channel) {
if (!channel.config.deadLetterQueue) {
return Promise.resolve();
}
channel.client.send(new client_sqs_1.CreateQueueCommand({
QueueName: `${channel.config.queueName}_dead_letter`,
}));
return Promise.resolve();
}
};
exports.AmazonSqsMessagingConsumer = AmazonSqsMessagingConsumer;
exports.AmazonSqsMessagingConsumer = AmazonSqsMessagingConsumer = __decorate([
(0, common_1.Injectable)(),
(0, messaging_1.MessageConsumer)(amazon_sqs_channel_1.AmazonSqsChannel)
], AmazonSqsMessagingConsumer);
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