node-red-contrib-fusion
v1.2.0
Published
A Node-RED node to fusion incoming messages by category.
Downloads
21
Readme
node-red-contrib-fusion
A Node-RED node to fusion incoming messages by category.
This node will save all incoming messages in memory and publish dictionaries of messages whenever a message is updated.
Dictionaries must be configured by sending a message with the topic fusion-configuration
. Its payload is a configuration object. The key outputTopic
configures the topic of the published dictionary (fusion
by default). The key inputTopics
is a list of topics to fusion (empty list by default). When allowUndefined
is true, dictionaries containing undefined values will be published as well (false by default). A additionalData
object could be set to include in the fused messages. When onlyPayloads
is true (false by default), only the payloads are merged.
Dictionaries may be deleted by sending a message with the topic fusion-deletion
and the outputTopic as payload.
All other messages with topics different to fusion-configuration
or fusion-deletion
will simply be saved for usage in dictionaries. In the current implementation, the messages are saved forever, or until the next NodeRed deployment.
Example
Configuration
{
"topic": "fusion-configuration",
"payload": {
"outputTopic": "a-and-b-merged",
"inputTopics": [
"topicA",
"topicB"
],
"allowUndefined": false,
"onlyPayloads": false,
"additionalData": {
"fromage": false
}
}
}
Input messages
{
"topic": "topicA",
"payload": 123
}
{
"topic": "topicB",
"payload": 456,
"otherfield": "abc"
}
Output message
{
"topic": "a-and-b-merged",
"payload": {
"topicA": {
"topic": "topicA",
"payload": 123
},
"topicB": {
"topic": "topicB",
"payload": 456,
"otherfield": "abc"
}
},
"additionalData": {
"fromage": false
}
}