phecda-server/dist/rpc/kafka/index.mjs

server framework that provide IOC/type-reuse/http&rpc-adaptor

import {
  Context,
  createControllerMetaMap,
  detectAopDep
} from "../../chunk-WST6E6MQ.mjs";
import {
  __name
} from "../../chunk-URKOYTBU.mjs";

// src/rpc/kafka/bind.ts
import Debug from "debug";
var debug = Debug("phecda-server/kafka");
async function bind({ consumer, producer }, { moduleMap, meta }, opts = {}) {
  const { globalGuards, globalFilter, globalPipe, globalAddons = [], defaultQueue } = opts;
  const existQueue = /* @__PURE__ */ new Set();
  const metaMap = createControllerMetaMap(meta, (meta2) => {
    const { controller, rpc, method, tag } = meta2.data;
    if (controller === "rpc" && rpc?.queue !== void 0) {
      debug(`register method "${method}" in module "${tag}"`);
      return true;
    }
  });
  detectAopDep(meta, {
    guards: globalGuards,
    addons: globalAddons
  }, "rpc");
  Context.applyAddons(globalAddons, {
    consumer,
    producer
  }, "kafka");
  async function subscribeQueues() {
    existQueue.clear();
    for (const [tag, record] of metaMap) {
      for (const method in record) {
        const meta2 = metaMap.get(tag)[method];
        const { data: { rpc } } = meta2;
        if (rpc) {
          const queue = rpc.queue || defaultQueue || tag;
          if (existQueue.has(queue)) continue;
          existQueue.add(queue);
          await consumer.subscribe({
            topic: queue,
            fromBeginning: true
          });
        }
      }
    }
  }
  __name(subscribeQueues, "subscribeQueues");
  await subscribeQueues();
  await consumer.run({
    eachMessage: /* @__PURE__ */ __name(async ({ message, partition, topic, heartbeat, pause }) => {
      if (!existQueue.has(topic)) return;
      const data = JSON.parse(message.value.toString());
      const { tag, method, id, queue: clientQueue, _ps, args } = data;
      if (_ps !== 1) return;
      debug(`invoke method "${method}" in module "${tag}"`);
      const meta2 = metaMap.get(tag)[method];
      const { data: { rpc } } = meta2;
      const isEvent = rpc.isEvent;
      const aop = Context.getAop(meta2, {
        globalFilter,
        globalGuards,
        globalPipe
      });
      const context = new Context({
        type: "kafka",
        category: "rpc",
        moduleMap,
        meta: meta2,
        args,
        id,
        tag,
        method,
        partition,
        topic,
        heartbeat,
        pause,
        isEvent,
        queue: topic
      });
      await context.run(aop, (returnData) => {
        if (!isEvent) {
          producer.send({
            topic: clientQueue,
            messages: [
              {
                value: JSON.stringify({
                  data: returnData,
                  id
                })
              }
            ]
          });
        }
      }, (err) => {
        if (!isEvent) {
          producer.send({
            topic: clientQueue,
            messages: [
              {
                value: JSON.stringify({
                  data: err,
                  error: true,
                  id
                })
              }
            ]
          });
        }
      });
    }, "eachMessage")
  });
}
__name(bind, "bind");
export {
  bind
};