Add connection flag

CHANGELOG.md

@@ -1,4 +1,12 @@
+<a name="v0.1.1"></a>
+
+# [0.4.2](https://github.com/moleculerjs/moleculer-channels/compare/v0.1.0...v0.1.1)
+
+-   Added Typescript support
+-   Added `connection` that prevents publishing events before the adapter is connected
+
 <a name="v0.1.0"></a>
+
 # v0.1.0 (2021-10-17)
 
 First public version.

package.json

@@ -33,24 +33,24 @@
     "amqplib": "^0.8.0",
     "benchmarkify": "^3.0.0",
     "coveralls": "^3.1.1",
-    "eslint": "^8.0.1",
+    "eslint": "^8.5.0",
     "eslint-config-prettier": "^8.3.0",
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-prettier": "^4.0.0",
-    "eslint-plugin-promise": "^5.1.0",
+    "eslint-plugin-promise": "^5.2.0",
     "eslint-plugin-security": "^1.4.0",
-    "ioredis": "^4.28.0",
-    "jest": "^27.2.5",
-    "jest-cli": "^27.2.5",
+    "ioredis": "^4.28.2",
+    "jest": "^27.4.5",
+    "jest-cli": "^27.4.5",
     "kafkajs": "^1.15.0",
     "kleur": "^4.1.4",
-    "moleculer": "^0.14.17",
+    "moleculer": "^0.14.18",
     "moleculer-repl": "^0.6.6",
     "msgpack5": "^5.3.2",
-    "nats": "^2.2.0",
-    "nodemon": "^2.0.13",
+    "nats": "^2.4.0",
+    "nodemon": "^2.0.15",
     "npm-check": "^5.9.2",
-    "prettier": "^2.4.1"
+    "prettier": "^2.5.1"
   },
   "jest": {
     "testEnvironment": "node",

src/adapters/amqp.js

@@ -8,7 +8,7 @@
 
 const BaseAdapter = require("./base");
 const _ = require("lodash");
-const { MoleculerError } = require("moleculer").Errors;
+const { MoleculerError, MoleculerRetryableError } = require("moleculer").Errors;
 const C = require("../constants");
 
 let Amqplib;
@@ -94,7 +94,7 @@ class AmqpAdapter extends BaseAdapter {
 		 * @type {Map<string,SubscriptionEntry>}
 		 */
 		this.subscriptions = new Map();
-		this.connected = false;
+
 		this.stopping = false;
 		this.connectAttempt = 0;
 		this.connectionCount = 0; // To detect reconnections
@@ -235,6 +235,7 @@ class AmqpAdapter extends BaseAdapter {
 								.then(() => {
 									this.connection = null;
 									this.channel = null;
+									this.connected = false;
 									resolve();
 								})
 								.catch(reject);
@@ -507,6 +508,10 @@ class AmqpAdapter extends BaseAdapter {
 		// Adapter is stopping. Publishing no longer is allowed
 		if (this.stopping) return;
 
+		if (!this.connected) {
+			throw new MoleculerRetryableError("Adapter not yet connected. Skipping publishing.");
+		}
+
 		// Available options: http://www.squaremobius.net/amqp.node/channel_api.html#channel_publish
 		const messageOptions = _.defaultsDeep(
 			{},

src/adapters/base.js

@@ -53,6 +53,9 @@ class BaseAdapter {
 		 * @type {Map<string, string[]>}
 		 */
 		this.activeMessages = new Map();
+
+		/** @type {Boolean} Flag indicating the adapter's connection status */
+		this.connected = false;
 	}
 
 	/**
@@ -119,7 +122,7 @@ class BaseAdapter {
 	 */
 	metricsIncrement(metricName, chan) {
 		if (!this.broker.isMetricsEnabled()) return;
-		
+
 		this.broker.metrics.increment(metricName, {
 			channel: chan.name,
 			group: chan.group

src/adapters/kafka.js

@@ -8,7 +8,7 @@
 
 const BaseAdapter = require("./base");
 const _ = require("lodash");
-const { MoleculerError } = require("moleculer").Errors;
+const { MoleculerError, MoleculerRetryableError } = require("moleculer").Errors;
 const C = require("../constants");
 /** Name of the partition where an error occurred while processing the message */
 const HEADER_ORIGINAL_PARTITION = "x-original-partition";
@@ -171,6 +171,8 @@ class KafkaAdapter extends BaseAdapter {
 		await this.producer.connect();
 
 		this.logger.info("Kafka adapter is connected.");
+
+		this.connected = true;
 	}
 
 	/**
@@ -201,7 +203,10 @@ class KafkaAdapter extends BaseAdapter {
 								// Release the pointers
 								this.consumers = new Map();
 							})
-							.then(() => resolve())
+							.then(() => {
+								this.connected = false;
+								resolve();
+							})
 							.catch(err => reject(err));
 					} else {
 						this.logger.warn(
@@ -498,6 +503,10 @@ class KafkaAdapter extends BaseAdapter {
 		// Adapter is stopping. Publishing no longer is allowed
 		if (this.stopping) return;
 
+		if (!this.connected) {
+			throw new MoleculerRetryableError("Adapter not yet connected. Skipping publishing.");
+		}
+
 		this.logger.debug(`Publish a message to '${channelName}' topic...`, payload, opts);
 
 		const data = opts.raw ? payload : this.serializer.serialize(payload);

src/adapters/nats.js

@@ -9,6 +9,7 @@
 const BaseAdapter = require("./base");
 const _ = require("lodash");
 const C = require("../constants");
+const { MoleculerRetryableError } = require("moleculer").Errors;
 
 let NATS;
 
@@ -130,6 +131,8 @@ class NatsAdapter extends BaseAdapter {
 		this.manager = await this.connection.jetstreamManager();
 
 		this.client = this.connection.jetstream(); // JetStreamOptions
+
+		this.connected = true;
 	}
 
 	/**
@@ -149,6 +152,8 @@ class NatsAdapter extends BaseAdapter {
 		} catch (error) {
 			this.logger.error("Error while closing NATS JetStream connection.", error);
 		}
+
+		this.connected = false;
 	}
 
 	/**
@@ -426,6 +431,10 @@ class NatsAdapter extends BaseAdapter {
 		// Adapter is stopping. Publishing no longer is allowed
 		if (this.stopping) return;
 
+		if (!this.connected) {
+			throw new MoleculerRetryableError("Adapter not yet connected. Skipping publishing.");
+		}
+
 		try {
 			// Remap headers into JetStream format
 			if (opts.headers) {

src/adapters/redis.js

@@ -8,7 +8,7 @@
 
 const _ = require("lodash");
 const BaseAdapter = require("./base");
-const { ServiceSchemaError } = require("moleculer").Errors;
+const { ServiceSchemaError, MoleculerRetryableError } = require("moleculer").Errors;
 const C = require("../constants");
 /** Redis generated ID of the message that was not processed properly*/
 const HEADER_ORIGINAL_ID = "x-original-id";
@@ -149,6 +149,8 @@ class RedisAdapter extends BaseAdapter {
 			this.nackedName,
 			await this.createRedisClient(this.nackedName, this.opts.redis)
 		);
+
+		this.connected = true;
 	}
 
 	/**
@@ -171,7 +173,10 @@ class RedisAdapter extends BaseAdapter {
 							// Release the pointers
 							this.clients = new Map();
 						})
-						.then(() => resolve())
+						.then(() => {
+							this.connected = false;
+							resolve();
+						})
 						.catch(err => reject(err));
 				} else {
 					this.logger.warn(
@@ -670,6 +675,10 @@ class RedisAdapter extends BaseAdapter {
 		// Adapter is stopping. Publishing no longer is allowed
 		if (this.stopping) return;
 
+		if (!this.connected) {
+			throw new MoleculerRetryableError("Adapter not yet connected. Skipping publishing.");
+		}
+
 		this.logger.debug(`Publish a message to '${channelName}' channel...`, payload, opts);
 
 		const clientPub = this.clients.get(this.pubName);

test/integration/index.spec.js

@@ -279,7 +279,7 @@ describe("Integration tests", () => {
 					};
 					// ---- ^ SETUP ^ ---
 
-					const numMessages = 20
+					const numMessages = 20;
 
 					await Promise.all(
 						_.times(numMessages, () => broker.sendToChannel("test.balanced.topic", msg))