6922504481

Committed 19 Nov 2023 07:28PM UTC coverage: 89.481% (-0.06%) from 89.543%

Build # 6922504481

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github

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zlintz

Commit Message

feat(package.json): node 14 support removed

Node 14 suppport removed as it is no longer lts

BREAKING CHANGE: Removed support for node 14

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/src/amqp/queue.js

const AckBatch = require('../ackBatch.js');
const postal = require('postal');
const dispatch = postal.channel('rabbit.dispatch');
const responses = postal.channel('rabbit.responses');
const info = require('../info');
const log = require('../log')('rabbot.queue');
const format = require('util').format;
const topLog = require('../log')('rabbot.topology');
const unhandledLog = require('../log')('rabbot.unhandled');
const noOp = function () {};

/* log
  * `rabbot.amqp-queue`
    * `debug`
      * for all message operations - ack, nack, reply & reject
    * `info`
      * subscribing
      * unsubscribing
    * `warn`
      * no message handlers for message received
    * `error`
      * no serializer defined for outgoing message
      * no serializer defined for incoming message
      * message nacked/rejected when consumer is set to no-ack
  * `rabbot.topology`
    * `info`
      * queue declaration
*/

function aliasOptions (options, aliases, ...omit) {
  const keys = Object.keys(options);
  return keys.reduce((result, key) => {
    const alias = aliases[key] || key;
    if (omit.indexOf(key) < 0) {
      result[alias] = options[key];
    }
    return result;
  }, {});
}

function define (channel, options, subscriber, connectionName) {
  const valid = aliasOptions(options, {
    queuelimit: 'maxLength',
    queueLimit: 'maxLength',
    deadletter: 'deadLetterExchange',
    deadLetter: 'deadLetterExchange',
    deadLetterRoutingKey: 'deadLetterRoutingKey'
  }, 'subscribe', 'limit', 'noBatch', 'unique');
  topLog.info("Declaring queue '%s' on connection '%s' with the options: %s",
    options.uniqueName, connectionName, JSON.stringify(options));

  let queuePromise;

  if (options.passive) {
    queuePromise = channel.checkQueue(options.uniqueName);
  } else {
    queuePromise = channel.assertQueue(options.uniqueName, valid);
  }

  return queuePromise.then(function (q) {
    if (options.limit) {
      channel.prefetch(options.limit);
    }
    return q;
  });
}

function finalize (channel, messages) {
  messages.reset();
  messages.ignoreSignal();
  channel.release();
  channel = undefined;
}

function getContentType (body, options) {
  if (options && options.contentType) {
    return options.contentType;
  } else if (typeof body === 'string') {
    return 'text/plain';
  } else if (typeof body === 'object' && !body.length) {
    return 'application/json';
  } else {
    return 'application/octet-stream';
  }
}

function getCount (messages) {
  if (messages) {
    return messages.messages.length;
  } else {
    return 0;
  }
}

function getNoBatchOps (channel, raw, messages, noAck) {
  messages.receivedCount += 1;

  let ack, nack, reject;
  if (noAck) {
    ack = noOp;
    nack = function () {
      log.error("Tag %d on '%s' - '%s' cannot be nacked in noAck mode - message will be lost!", raw.fields.deliveryTag, messages.name, messages.connectionName);
    };
    reject = function () {
      log.error("Tag %d on '%s' - '%s' cannot be rejected in noAck mode - message will be lost!", raw.fields.deliveryTag, messages.name, messages.connectionName);
    };
  } else {
    ack = function () {
      log.debug("Acking tag %d on '%s' - '%s'", raw.fields.deliveryTag, messages.name, messages.connectionName);
      channel.ack({ fields: { deliveryTag: raw.fields.deliveryTag } }, false);
    };
    nack = function () {
      log.debug("Nacking tag %d on '%s' - '%s'", raw.fields.deliveryTag, messages.name, messages.connectionName);
      channel.nack({ fields: { deliveryTag: raw.fields.deliveryTag } }, false);
    };
    reject = function () {
      log.debug("Rejecting tag %d on '%s' - '%s'", raw.fields.deliveryTag, messages.name, messages.connectionName);
      channel.reject({ fields: { deliveryTag: raw.fields.deliveryTag } }, false, false);
    };
  }

  return {
    ack: ack,
    nack: nack,
    reject: reject
  };
}

function getReply (channel, serializers, raw, replyQueue, connectionName) {
  let position = 0;
  return function (reply, options) {
    const defaultReplyType = raw.type + '.reply';
    const replyType = options ? (options.replyType || defaultReplyType) : defaultReplyType;
    const contentType = getContentType(reply, options);
    const serializer = serializers[contentType];
    if (!serializer) {
      const message = format('Failed to publish message with contentType %s - no serializer defined', contentType);
      log.error(message);
      return Promise.reject(new Error(message));
    }
    const payload = serializer.serialize(reply);

    const replyTo = raw.properties.replyTo;
    raw.ack();
    if (replyTo) {
      const publishOptions = {
        type: replyType,
        contentType: contentType,
        contentEncoding: 'utf8',
        correlationId: raw.properties.messageId,
        timestamp: options && options.timestamp ? options.timestamp : Date.now(),
        replyTo: replyQueue === false ? undefined : replyQueue,
        headers: options && options.headers ? options.headers : {}
      };
      if (options && options.more) {
        publishOptions.headers.position = (position++);
      } else {
        publishOptions.headers.sequence_end = true; // jshint ignore:line
      }
      log.debug("Replying to message %s on '%s' - '%s' with type '%s'",
        raw.properties.messageId,
        replyTo,
        connectionName,
        publishOptions.type);
      if (raw.properties.headers && raw.properties.headers['direct-reply-to']) {
        return channel.publish(
          '',
          replyTo,
          payload,
          publishOptions
        );
      } else {
        return channel.sendToQueue(replyTo, payload, publishOptions);
      }
    } else {
      return Promise.reject(new Error('Cannot reply to a message that has no return address'));
    }
  };
}

function getResolutionOperations (channel, raw, messages, options) {
  if (options.noBatch) {
    return getNoBatchOps(channel, raw, messages, options.noAck);
  }

  if (options.noAck || options.noBatch) {
    return getUntrackedOps(channel, raw, messages);
  }

  return getTrackedOps(raw, messages);
}

function getTrackedOps (raw, messages) {
  return messages.getMessageOps(raw.fields.deliveryTag);
}

function getUntrackedOps (channel, raw, messages) {
  messages.receivedCount += 1;
  return {
    ack: noOp,
    nack: function () {
      log.error("Tag %d on '%s' - '%s' cannot be nacked in noAck mode - message will be lost!", raw.fields.deliveryTag, messages.name, messages.connectionName);
    },
    reject: function () {
      log.error("Tag %d on '%s' - '%s' cannot be rejected in noAck mode - message will be lost!", raw.fields.deliveryTag, messages.name, messages.connectionName);
    }
  };
}

// purging an auto-delete queue means unsubscribing is not
// an option as it will cause the queue, binding and possibly
// upstream auto-delete exchanges to be deleted as well
function purgeADQueue (channel, connectionName, options, messages) {
  const name = options.uniqueName || options.name;
  return new Promise(function (resolve, reject) {
    const messageCount = messages.messages.length;
    if (messageCount > 0) {
      log.info(`Purge operation for queue '${options.name}' on '${connectionName}' is waiting for resolution on ${messageCount} messages`);
      messages.once('empty', function () {
        channel.purgeQueue(name)
          .then(
            result => resolve(result.messageCount),
            reject
          );
      });
    } else {
      channel.purgeQueue(name)
        .then(
          result => resolve(result.messageCount),
          reject
        );
    }
  });
}

// queues not marked auto-delete should be unsubscribed from
// in order to stop incoming messages while the purge is
// taking place and avoid arrival of additional new messages
function purgeQueue (channel, connectionName, options, messages) {
  const name = options.uniqueName || options.name;
  return new Promise(function (resolve, reject) {
    function onUnsubscribed () {
      const messageCount = messages.messages.length;
      if (messageCount > 0) {
        log.info(`Purge operation for queue '${options.name}' on '${connectionName}' is waiting for resolution on ${messageCount} messages`);
        messages.once('empty', function () {
          channel.purgeQueue(name)
            .then(
              result => resolve(result.messageCount),
              reject
            );
        });
      } else {
        channel.purgeQueue(name)
          .then(
            result => resolve(result.messageCount),
            reject
          );
      }
    }
    log.info(`Stopping subscription on '${options.name}' on '${connectionName}' before purging`);
    unsubscribe(channel, options)
      .then(onUnsubscribed, onUnsubscribed);
  });
}

function purge (channel, connectionName, options, messages, definer) {
  log.info(`Checking queue length on '${options.name}' on '${connectionName}' before purging`);
  return definer()
    .then(
      q => {
        if (q.messageCount > 0) {
          const promise = options.autoDelete
            ? purgeADQueue(channel, connectionName, options, messages)
            : purgeQueue(channel, connectionName, options, messages);
          return promise
            .then(
              count => {
                log.info(`Purged ${count} messages from '${options.name}' on '${connectionName}'`);
                return count;
              }
            );
        } else {
          log.info(`'${options.name}' on '${connectionName}' was already empty when purge was called`);
          return Promise.resolve(0);
        }
      },
      Promise.reject
    );
}

function release (channel, options, messages, released) {
  function onUnsubscribed () {
    return new Promise(function (resolve) {
      const messageCount = messages.messages.length;
      if (messageCount > 0 && !released) {
        log.info(`Release operation for queue '${options.name}' is waiting for resolution on ${messageCount} messages`);
        messages.once('empty', function () {
          finalize(channel, messages);
          resolve();
        });
      } else {
        finalize(channel, messages);
        resolve();
      }
    });
  }
  return unsubscribe(channel, options)
    .then(onUnsubscribed, onUnsubscribed);
}

function resolveTags (channel, queue, connection) {
  return function (op, data) {
    switch (op) {
      case 'ack':
        log.debug("Acking tag %d on '%s' - '%s'", data.tag, queue, connection);
        return channel.ack({ fields: { deliveryTag: data.tag } }, data.inclusive);
      case 'nack':
        log.debug("Nacking tag %d on '%s' - '%s'", data.tag, queue, connection);
        return channel.nack({ fields: { deliveryTag: data.tag } }, data.inclusive);
      case 'reject':
        log.debug("Rejecting tag %d on '%s' - '%s'", data.tag, queue, connection);
        return channel.nack({ fields: { deliveryTag: data.tag } }, data.inclusive, false);
      default:
        return Promise.resolve(true);
    }
  };
}

function subscribe (channelName, channel, topology, serializers, messages, options, exclusive) {
  const shouldAck = !options.noAck;
  const shouldBatch = !options.noBatch;
  const shouldCacheKeys = !options.noCacheKeys;
  // this is done to support rabbit-assigned queue names
  channelName = channelName || options.name;
  if (shouldAck && shouldBatch) {
    messages.listenForSignal();
  }

  options.consumerTag = info.createTag(channelName);
  if (Object.keys(channel.item.consumers).length > 0) {
    log.info('Duplicate subscription to queue %s ignored', channelName);
    return Promise.resolve(options.consumerTag);
  }
  log.info("Starting subscription to queue '%s' on '%s'", channelName, topology.connection.name);
  return channel.consume(channelName, function (raw) {
    if (!raw) {
      // this happens when the consumer has been cancelled
      log.warn("Queue '%s' was sent a consumer cancel notification");
      throw new Error('Broker cancelled the consumer remotely');
    }
    const correlationId = raw.properties.correlationId;
    const ops = getResolutionOperations(channel, raw, messages, options);

    raw.ack = ops.ack.bind(ops);
    raw.reject = ops.reject.bind(ops);
    raw.nack = ops.nack.bind(ops);
    raw.reply = getReply(channel, serializers, raw, topology.replyQueue.name, topology.connection.name);
    raw.type = raw.properties.type || raw.fields.routingKey;
    if (exclusive) {
      options.exclusive = true;
    }
    raw.queue = channelName;
    const parts = [options.name.replace(/[.]/g, '-')];
    if (raw.type) {
      parts.push(raw.type);
    }
    let topic = parts.join('.');
    const contentType = raw.properties.contentType || 'application/octet-stream';
    const serializer = serializers[contentType];
    const track = () => {
      if (shouldAck && shouldBatch) {
        messages.addMessage(ops);
      }
    };
    if (!serializer) {
      if (options.poison) {
        raw.body = raw.content;
        raw.contentEncoding = raw.properties.contentEncoding;
        raw.quarantined = true;
        topic = `${topic}.quarantined`;
      } else {
        log.error("Could not deserialize message id %s on queue '%s', connection '%s' - no serializer defined",
          raw.properties.messageId, channelName, topology.connection.name);
        track();
        ops.reject();
        return;
      }
    } else {
      try {
        raw.body = serializer.deserialize(raw.content, raw.properties.contentEncoding);
      } catch (err) {
        if (options.poison) {
          raw.quarantined = true;
          raw.body = raw.content;
          raw.contentEncoding = raw.properties.contentEncoding;
          topic = `${topic}.quarantined`;
        } else {
          track();
          ops.reject();
          return;
        }
      }
    }

    const onPublish = function (data) {
      let handled;

      if (data.activated) {
        handled = true;
      }
      track();

      if (!handled) {
        unhandledLog.warn("Message of %s on queue '%s', connection '%s' was not processed by any registered handlers",
          raw.type,
          channelName,
          topology.connection.name
        );
        topology.onUnhandled(raw);
      }
    };

    if (raw.fields.routingKey === topology.replyQueue.name) {
      responses.publish(
        {
          topic: correlationId,
          headers: {
            resolverNoCache: true
          },
          data: raw
        },
        onPublish
      );
    } else {
      dispatch.publish({
        topic: topic,
        headers: {
          resolverNoCache: !shouldCacheKeys
        },
        data: raw
      }, onPublish);
    }
  }, options)
    .then(function (result) {
      channel.tag = result.consumerTag;
      return result;
    }, function (err) {
      log.error('Error on channel consume', options);
      throw err;
    });
}

function unsubscribe (channel, options) {
  if (channel.tag) {
    log.info("Unsubscribing from queue '%s' with tag %s", options.name, channel.tag);
    return channel.cancel(channel.tag);
  } else {
    return Promise.resolve();
  }
}

module.exports = function (options, topology, serializers) {
  const channelName = ['queue', options.uniqueName].join(':');
  return topology.connection.getChannel(channelName, false, 'queue channel for ' + options.name)
    .then(function (channel) {
      const messages = new AckBatch(options.name, topology.connection.name, resolveTags(channel, options.name, topology.connection.name));
      const subscriber = subscribe.bind(undefined, options.uniqueName, channel, topology, serializers, messages, options);
      const definer = define.bind(undefined, channel, options, subscriber, topology.connection.name);
      return {
        channel: channel,
        messages: messages,
        define: definer,
        finalize: finalize.bind(undefined, channel, messages),
        getMessageCount: getCount.bind(undefined, messages),
        purge: purge.bind(undefined, channel, topology.connection.name, options, messages, definer),
        release: release.bind(undefined, channel, options, messages),
        subscribe: subscriber,
        unsubscribe: unsubscribe.bind(undefined, channel, options, messages)
      };
    });
};

1	const AckBatch = require('../ackBatch.js');	3✔
2	const postal = require('postal');	3✔
3	const dispatch = postal.channel('rabbit.dispatch');	3✔
4	const responses = postal.channel('rabbit.responses');	3✔
5	const info = require('../info');	3✔
6	const log = require('../log')('rabbot.queue');	3✔
7	const format = require('util').format;	3✔
8	const topLog = require('../log')('rabbot.topology');	3✔
9	const unhandledLog = require('../log')('rabbot.unhandled');	3✔
10	const noOp = function () {};	3✔
11
12	/* log
13	* `rabbot.amqp-queue`
14	* `debug`
15	* for all message operations - ack, nack, reply & reject
16	* `info`
17	* subscribing
18	* unsubscribing
19	* `warn`
20	* no message handlers for message received
21	* `error`
22	* no serializer defined for outgoing message
23	* no serializer defined for incoming message
24	* message nacked/rejected when consumer is set to no-ack
25	* `rabbot.topology`
26	* `info`
27	* queue declaration
28	*/
29
30	function aliasOptions (options, aliases, ...omit) {
31	const keys = Object.keys(options);	19,373✔
32	return keys.reduce((result, key) => {	19,373✔
33	const alias = aliases[key] \|\| key;	58,491✔
34	if (omit.indexOf(key) < 0) {	58,491✔
35	result[alias] = options[key];	58,245✔
36	}
37	return result;	58,491✔
38	}, {});
39	}
40
41	function define (channel, options, subscriber, connectionName) {
42	const valid = aliasOptions(options, {	19,373✔
43	queuelimit: 'maxLength',
44	queueLimit: 'maxLength',
45	deadletter: 'deadLetterExchange',
46	deadLetter: 'deadLetterExchange',
47	deadLetterRoutingKey: 'deadLetterRoutingKey'
48	}, 'subscribe', 'limit', 'noBatch', 'unique');
49	topLog.info("Declaring queue '%s' on connection '%s' with the options: %s",	19,373✔
50	options.uniqueName, connectionName, JSON.stringify(options));
51
52	let queuePromise;
53
54	if (options.passive) {	19,373✔
55	queuePromise = channel.checkQueue(options.uniqueName);	19,145✔
56	} else {
57	queuePromise = channel.assertQueue(options.uniqueName, valid);	228✔
58	}
59
60	return queuePromise.then(function (q) {	19,373✔
61	if (options.limit) {	231✔
62	channel.prefetch(options.limit);	18✔
63	}
64	return q;	231✔
65	});
66	}
67
68	function finalize (channel, messages) {
69	messages.reset();	204✔
70	messages.ignoreSignal();	204✔
71	channel.release();	204✔
72	channel = undefined;	204✔
73	}
74
75	function getContentType (body, options) {
76	if (options && options.contentType) {	42!
77	return options.contentType;	×
78	} else if (typeof body === 'string') {	42✔
79	return 'text/plain';	33✔
80	} else if (typeof body === 'object' && !body.length) {	9!
81	return 'application/json';	9✔
82	} else {
83	return 'application/octet-stream';	×
84	}
85	}
86
87	function getCount (messages) {
88	if (messages) {	297!
89	return messages.messages.length;	297✔
90	} else {
91	return 0;	×
92	}
93	}
94
95	function getNoBatchOps (channel, raw, messages, noAck) {
96	messages.receivedCount += 1;	30✔
97
98	let ack, nack, reject;
99	if (noAck) {	30!
100	ack = noOp;	×
101	nack = function () {	×
102	log.error("Tag %d on '%s' - '%s' cannot be nacked in noAck mode - message will be lost!", raw.fields.deliveryTag, messages.name, messages.connectionName);	×
103	};
104	reject = function () {	×
105	log.error("Tag %d on '%s' - '%s' cannot be rejected in noAck mode - message will be lost!", raw.fields.deliveryTag, messages.name, messages.connectionName);	×
106	};
107	} else {
108	ack = function () {	30✔
109	log.debug("Acking tag %d on '%s' - '%s'", raw.fields.deliveryTag, messages.name, messages.connectionName);	27✔
110	channel.ack({ fields: { deliveryTag: raw.fields.deliveryTag } }, false);	27✔
111	};
112	nack = function () {	30✔
113	log.debug("Nacking tag %d on '%s' - '%s'", raw.fields.deliveryTag, messages.name, messages.connectionName);	×
114	channel.nack({ fields: { deliveryTag: raw.fields.deliveryTag } }, false);	×
115	};
116	reject = function () {	30✔
117	log.debug("Rejecting tag %d on '%s' - '%s'", raw.fields.deliveryTag, messages.name, messages.connectionName);	×
118	channel.reject({ fields: { deliveryTag: raw.fields.deliveryTag } }, false, false);	×
119	};
120	}
121
122	return {	30✔
123	ack: ack,
124	nack: nack,
125	reject: reject
126	};
127	}
128
129	function getReply (channel, serializers, raw, replyQueue, connectionName) {
130	let position = 0;	3,387✔
131	return function (reply, options) {	3,387✔
132	const defaultReplyType = raw.type + '.reply';	42✔
133	const replyType = options ? (options.replyType \|\| defaultReplyType) : defaultReplyType;	42✔
134	const contentType = getContentType(reply, options);	42✔
135	const serializer = serializers[contentType];	42✔
136	if (!serializer) {	42!
137	const message = format('Failed to publish message with contentType %s - no serializer defined', contentType);	×
138	log.error(message);	×
139	return Promise.reject(new Error(message));	×
140	}
141	const payload = serializer.serialize(reply);	42✔
142
143	const replyTo = raw.properties.replyTo;	42✔
144	raw.ack();	42✔
145	if (replyTo) {	42!
146	const publishOptions = {	42✔
147	type: replyType,
148	contentType: contentType,
149	contentEncoding: 'utf8',
150	correlationId: raw.properties.messageId,
151	timestamp: options && options.timestamp ? options.timestamp : Date.now(),	93!
152	replyTo: replyQueue === false ? undefined : replyQueue,	42!
153	headers: options && options.headers ? options.headers : {}	93!
154	};
155	if (options && options.more) {	42✔
156	publishOptions.headers.position = (position++);	9✔
157	} else {
158	publishOptions.headers.sequence_end = true; // jshint ignore:line	33✔
159	}
160	log.debug("Replying to message %s on '%s' - '%s' with type '%s'",	42✔
161	raw.properties.messageId,
162	replyTo,
163	connectionName,
164	publishOptions.type);
165	if (raw.properties.headers && raw.properties.headers['direct-reply-to']) {	42✔
166	return channel.publish(	9✔
167	'',
168	replyTo,
169	payload,
170	publishOptions
171	);
172	} else {
173	return channel.sendToQueue(replyTo, payload, publishOptions);	33✔
174	}
175	} else {
176	return Promise.reject(new Error('Cannot reply to a message that has no return address'));	×
177	}
178	};
179	}
180
181	function getResolutionOperations (channel, raw, messages, options) {
182	if (options.noBatch) {	3,387✔
183	return getNoBatchOps(channel, raw, messages, options.noAck);	30✔
184	}
185
186	if (options.noAck \|\| options.noBatch) {	3,357✔
187	return getUntrackedOps(channel, raw, messages);	54✔
188	}
189
190	return getTrackedOps(raw, messages);	3,303✔
191	}
192
193	function getTrackedOps (raw, messages) {
194	return messages.getMessageOps(raw.fields.deliveryTag);	3,303✔
195	}
196
197	function getUntrackedOps (channel, raw, messages) {
198	messages.receivedCount += 1;	54✔
199	return {	54✔
200	ack: noOp,
201	nack: function () {
202	log.error("Tag %d on '%s' - '%s' cannot be nacked in noAck mode - message will be lost!", raw.fields.deliveryTag, messages.name, messages.connectionName);	×
203	},
204	reject: function () {
205	log.error("Tag %d on '%s' - '%s' cannot be rejected in noAck mode - message will be lost!", raw.fields.deliveryTag, messages.name, messages.connectionName);	×
206	}
207	};
208	}
209
210	// purging an auto-delete queue means unsubscribing is not
211	// an option as it will cause the queue, binding and possibly
212	// upstream auto-delete exchanges to be deleted as well
213	function purgeADQueue (channel, connectionName, options, messages) {
214	const name = options.uniqueName \|\| options.name;	6!
215	return new Promise(function (resolve, reject) {	6✔
216	const messageCount = messages.messages.length;	6✔
217	if (messageCount > 0) {	6✔
218	log.info(`Purge operation for queue '${options.name}' on '${connectionName}' is waiting for resolution on ${messageCount} messages`);	3✔
219	messages.once('empty', function () {	3✔
220	channel.purgeQueue(name)	3✔
221	.then(
222	result => resolve(result.messageCount),	3✔
223	reject
224	);
225	});
226	} else {
227	channel.purgeQueue(name)	3✔
228	.then(
229	result => resolve(result.messageCount),	3✔
230	reject
231	);
232	}
233	});
234	}
235
236	// queues not marked auto-delete should be unsubscribed from
237	// in order to stop incoming messages while the purge is
238	// taking place and avoid arrival of additional new messages
239	function purgeQueue (channel, connectionName, options, messages) {
240	const name = options.uniqueName \|\| options.name;	3!
241	return new Promise(function (resolve, reject) {	3✔
242	function onUnsubscribed () {
243	const messageCount = messages.messages.length;	3✔
244	if (messageCount > 0) {	3!
245	log.info(`Purge operation for queue '${options.name}' on '${connectionName}' is waiting for resolution on ${messageCount} messages`);	3✔
246	messages.once('empty', function () {	3✔
247	channel.purgeQueue(name)	3✔
248	.then(
249	result => resolve(result.messageCount),	3✔
250	reject
251	);
252	});
253	} else {
254	channel.purgeQueue(name)	×
255	.then(
256	result => resolve(result.messageCount),	×
257	reject
258	);
259	}
260	}
261	log.info(`Stopping subscription on '${options.name}' on '${connectionName}' before purging`);	3✔
262	unsubscribe(channel, options)	3✔
263	.then(onUnsubscribed, onUnsubscribed);
264	});
265	}
266
267	function purge (channel, connectionName, options, messages, definer) {
268	log.info(`Checking queue length on '${options.name}' on '${connectionName}' before purging`);	9✔
269	return definer()	9✔
270	.then(
271	q => {
272	if (q.messageCount > 0) {	9!
273	const promise = options.autoDelete	9✔
274	? purgeADQueue(channel, connectionName, options, messages)
275	: purgeQueue(channel, connectionName, options, messages);
276	return promise	9✔
277	.then(
278	count => {
279	log.info(`Purged ${count} messages from '${options.name}' on '${connectionName}'`);	9✔
280	return count;	9✔
281	}
282	);
283	} else {
284	log.info(`'${options.name}' on '${connectionName}' was already empty when purge was called`);	×
285	return Promise.resolve(0);	×
286	}
287	},
288	Promise.reject
289	);
290	}
291
292	function release (channel, options, messages, released) {
293	function onUnsubscribed () {
294	return new Promise(function (resolve) {	204✔
295	const messageCount = messages.messages.length;	204✔
296	if (messageCount > 0 && !released) {	204✔
297	log.info(`Release operation for queue '${options.name}' is waiting for resolution on ${messageCount} messages`);	93✔
298	messages.once('empty', function () {	93✔
299	finalize(channel, messages);	93✔
300	resolve();	93✔
301	});
302	} else {
303	finalize(channel, messages);	111✔
304	resolve();	111✔
305	}
306	});
307	}
308	return unsubscribe(channel, options)	204✔
309	.then(onUnsubscribed, onUnsubscribed);
310	}
311
312	function resolveTags (channel, queue, connection) {
313	return function (op, data) {	225✔
314	switch (op) {	402!
315	case 'ack':
316	log.debug("Acking tag %d on '%s' - '%s'", data.tag, queue, connection);	102✔
317	return channel.ack({ fields: { deliveryTag: data.tag } }, data.inclusive);	102✔
318	case 'nack':
319	log.debug("Nacking tag %d on '%s' - '%s'", data.tag, queue, connection);	×
320	return channel.nack({ fields: { deliveryTag: data.tag } }, data.inclusive);	×
321	case 'reject':
322	log.debug("Rejecting tag %d on '%s' - '%s'", data.tag, queue, connection);	12✔
323	return channel.nack({ fields: { deliveryTag: data.tag } }, data.inclusive, false);	12✔
324	default:
325	return Promise.resolve(true);	288✔
326	}
327	};
328	}
329
330	function subscribe (channelName, channel, topology, serializers, messages, options, exclusive) {
331	const shouldAck = !options.noAck;	213✔
332	const shouldBatch = !options.noBatch;	213✔
333	const shouldCacheKeys = !options.noCacheKeys;	213✔
334	// this is done to support rabbit-assigned queue names
335	channelName = channelName \|\| options.name;	213✔
336	if (shouldAck && shouldBatch) {	213✔
337	messages.listenForSignal();	195✔
338	}
339
340	options.consumerTag = info.createTag(channelName);	213✔
341	if (Object.keys(channel.item.consumers).length > 0) {	213✔
342	log.info('Duplicate subscription to queue %s ignored', channelName);	3✔
343	return Promise.resolve(options.consumerTag);	3✔
344	}
345	log.info("Starting subscription to queue '%s' on '%s'", channelName, topology.connection.name);	210✔
346	return channel.consume(channelName, function (raw) {	210✔
347	if (!raw) {	3,387!
348	// this happens when the consumer has been cancelled
349	log.warn("Queue '%s' was sent a consumer cancel notification");	×
350	throw new Error('Broker cancelled the consumer remotely');	×
351	}
352	const correlationId = raw.properties.correlationId;	3,387✔
353	const ops = getResolutionOperations(channel, raw, messages, options);	3,387✔
354
355	raw.ack = ops.ack.bind(ops);	3,387✔
356	raw.reject = ops.reject.bind(ops);	3,387✔
357	raw.nack = ops.nack.bind(ops);	3,387✔
358	raw.reply = getReply(channel, serializers, raw, topology.replyQueue.name, topology.connection.name);	3,387✔
359	raw.type = raw.properties.type \|\| raw.fields.routingKey;	3,387✔
360	if (exclusive) {	3,387!
361	options.exclusive = true;	×
362	}
363	raw.queue = channelName;	3,387✔
364	const parts = [options.name.replace(/[.]/g, '-')];	3,387✔
365	if (raw.type) {	3,387✔
366	parts.push(raw.type);	3,369✔
367	}
368	let topic = parts.join('.');	3,387✔
369	const contentType = raw.properties.contentType \|\| 'application/octet-stream';	3,387!
370	const serializer = serializers[contentType];	3,387✔
371	const track = () => {	3,387✔
372	if (shouldAck && shouldBatch) {	3,387✔
373	messages.addMessage(ops);	3,303✔
374	}
375	};
376	if (!serializer) {	3,387!
377	if (options.poison) {	×
378	raw.body = raw.content;	×
379	raw.contentEncoding = raw.properties.contentEncoding;	×
380	raw.quarantined = true;	×
381	topic = `${topic}.quarantined`;	×
382	} else {
383	log.error("Could not deserialize message id %s on queue '%s', connection '%s' - no serializer defined",	×
384	raw.properties.messageId, channelName, topology.connection.name);
385	track();	×
386	ops.reject();	×
387	return;	×
388	}
389	} else {
390	try {	3,387✔
391	raw.body = serializer.deserialize(raw.content, raw.properties.contentEncoding);	3,387✔
392	} catch (err) {
393	if (options.poison) {	6✔
394	raw.quarantined = true;	3✔
395	raw.body = raw.content;	3✔
396	raw.contentEncoding = raw.properties.contentEncoding;	3✔
397	topic = `${topic}.quarantined`;	3✔
398	} else {
399	track();	3✔
400	ops.reject();	3✔
401	return;	3✔
402	}
403	}
404	}
405
406	const onPublish = function (data) {	3,384✔
407	let handled;
408
409	if (data.activated) {	3,384✔
410	handled = true;	3,297✔
411	}
412	track();	3,384✔
413
414	if (!handled) {	3,384✔
415	unhandledLog.warn("Message of %s on queue '%s', connection '%s' was not processed by any registered handlers",	87✔
416	raw.type,
417	channelName,
418	topology.connection.name
419	);
420	topology.onUnhandled(raw);	87✔
421	}
422	};
423
424	if (raw.fields.routingKey === topology.replyQueue.name) {	3,384✔
425	responses.publish(	42✔
426	{
427	topic: correlationId,
428	headers: {
429	resolverNoCache: true
430	},
431	data: raw
432	},
433	onPublish
434	);
435	} else {
436	dispatch.publish({	3,342✔
437	topic: topic,
438	headers: {
439	resolverNoCache: !shouldCacheKeys
440	},
441	data: raw
442	}, onPublish);
443	}
444	}, options)
445	.then(function (result) {
446	channel.tag = result.consumerTag;	210✔
447	return result;	210✔
448	}, function (err) {
449	log.error('Error on channel consume', options);	×
450	throw err;	×
451	});
452	}
453
454	function unsubscribe (channel, options) {
455	if (channel.tag) {	207✔
456	log.info("Unsubscribing from queue '%s' with tag %s", options.name, channel.tag);	198✔
457	return channel.cancel(channel.tag);	198✔
458	} else {
459	return Promise.resolve();	9✔
460	}
461	}
462
463	module.exports = function (options, topology, serializers) {	3✔
464	const channelName = ['queue', options.uniqueName].join(':');	234✔
465	return topology.connection.getChannel(channelName, false, 'queue channel for ' + options.name)	234✔
466	.then(function (channel) {
467	const messages = new AckBatch(options.name, topology.connection.name, resolveTags(channel, options.name, topology.connection.name));	225✔
468	const subscriber = subscribe.bind(undefined, options.uniqueName, channel, topology, serializers, messages, options);	225✔
469	const definer = define.bind(undefined, channel, options, subscriber, topology.connection.name);	225✔
470	return {	225✔
471	channel: channel,
472	messages: messages,
473	define: definer,
474	finalize: finalize.bind(undefined, channel, messages),
475	getMessageCount: getCount.bind(undefined, messages),
476	purge: purge.bind(undefined, channel, topology.connection.name, options, messages, definer),
477	release: release.bind(undefined, channel, options, messages),
478	subscribe: subscriber,
479	unsubscribe: unsubscribe.bind(undefined, channel, options, messages)
480	};
481	});
482	};

Foo-Foo-MQ / foo-foo-mq / 6922504481

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