mqtt

Functions for matching topics to mqtt topics which contain wildcards.

---

isMatchingAllTopics

isMatchingAllTopics(Text wildcardTopic, Text|Array topics): Checks whether all topics match the wildcard wildcardTopic.

Example with array:

policy "allTopicsMatchMultilevelWildcardTopic"
permit
  subject == "firstSubject";
  mqtt.isMatchingAllTopics(resource, ["first/second/third", "first/second/fourth"]);

Example with single topic:

policy "topicMatchesMultilevelWildcardTopic"
permit
  subject == "firstSubject";
  mqtt.isMatchingAllTopics(resource, "first/second/third");

---

isMatchingAtLeastOneTopic

mqtt.isMatchingAtLeastOneTopic(Text wildcardTopic, Text|Array topics) Checks whether at least one topic in topics matches the wildcard wildcardTopic.

Example with array:

policy "atLeastOneTopicMatchesMultilevelWildcardTopic"
permit
  subject == "secondSubject";
  mqtt.isMatchingAtLeastOneTopic(resource, ["first/second/third", "first/third"]);

Example with single topic:

policy "topicMatchesMultilevelWildcardTopic"
permit
  subject == "secondSubject";
  mqtt.isMatchingAtLeastOneTopic(resource, "first/second/third");

---