108 lines
2.8 KiB
TypeScript
108 lines
2.8 KiB
TypeScript
import { Hook, Manifest } from "../types.ts";
|
|
import { System } from "../system.ts";
|
|
import { DexieMQ } from "../lib/mq.dexie.ts";
|
|
import { fullQueueName } from "../lib/mq_util.ts";
|
|
import { Message } from "$sb/types.ts";
|
|
|
|
type MQSubscription = {
|
|
queue: string;
|
|
batchSize?: number;
|
|
autoAck?: boolean;
|
|
};
|
|
|
|
export type MQHookT = {
|
|
mqSubscriptions?: MQSubscription[];
|
|
};
|
|
|
|
export class MQHook implements Hook<MQHookT> {
|
|
subscriptions: (() => void)[] = [];
|
|
|
|
constructor(private system: System<MQHookT>, readonly mq: DexieMQ) {
|
|
}
|
|
|
|
apply(system: System<MQHookT>): void {
|
|
this.system = system;
|
|
system.on({
|
|
plugLoaded: () => {
|
|
this.reloadQueues();
|
|
},
|
|
plugUnloaded: () => {
|
|
this.reloadQueues();
|
|
},
|
|
});
|
|
|
|
this.reloadQueues();
|
|
}
|
|
|
|
stop() {
|
|
// console.log("Unsubscribing from all queues");
|
|
this.subscriptions.forEach((sub) => sub());
|
|
this.subscriptions = [];
|
|
}
|
|
|
|
reloadQueues() {
|
|
this.stop();
|
|
for (const plug of this.system.loadedPlugs.values()) {
|
|
if (!plug.manifest) {
|
|
continue;
|
|
}
|
|
for (
|
|
const [name, functionDef] of Object.entries(
|
|
plug.manifest.functions,
|
|
)
|
|
) {
|
|
if (!functionDef.mqSubscriptions) {
|
|
continue;
|
|
}
|
|
const subscriptions = functionDef.mqSubscriptions;
|
|
for (const subscriptionDef of subscriptions) {
|
|
const queue = fullQueueName(plug.name!, subscriptionDef.queue);
|
|
// console.log("Subscribing to queue", queue);
|
|
this.subscriptions.push(
|
|
this.mq.subscribe(
|
|
queue,
|
|
{
|
|
batchSize: subscriptionDef.batchSize,
|
|
},
|
|
async (messages: Message[]) => {
|
|
try {
|
|
await plug.invoke(name, [messages]);
|
|
if (subscriptionDef.autoAck) {
|
|
await this.mq.batchAck(queue, messages.map((m) => m.id));
|
|
}
|
|
} catch (e: any) {
|
|
console.error(
|
|
"Execution of mqSubscription for queue",
|
|
queue,
|
|
"invoking",
|
|
name,
|
|
"with messages",
|
|
messages,
|
|
"failed:",
|
|
e,
|
|
);
|
|
}
|
|
},
|
|
),
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
validateManifest(manifest: Manifest<MQHookT>): string[] {
|
|
const errors: string[] = [];
|
|
for (const functionDef of Object.values(manifest.functions)) {
|
|
if (!functionDef.mqSubscriptions) {
|
|
continue;
|
|
}
|
|
for (const subscriptionDef of functionDef.mqSubscriptions) {
|
|
if (!subscriptionDef.queue) {
|
|
errors.push("Missing queue name for mqSubscription");
|
|
}
|
|
}
|
|
}
|
|
return errors;
|
|
}
|
|
}
|