These nodes allow you to record and replay msg-object sequences within node red. The time between each message is measured, so the replay has the same delays as the original sequence.
From inside your node-red directory:
npm install node-red-contrib-sequencer
It includes two nodes:
-
recorder: lets you record sequences of objects, which can be replayed by the player node. -
player: the output node lets you replay previously or even manually generated sequences. The player can replay multiple sequences in parallel.
The recorder produces sequences in the following format, which can be read by the player:
{
"name": "DemoSequence",
"seq": [
{
"data": {
"topic": "MyTopic",
"payload": "A"
},
"delay": 0
},
{
"data": {
"topic": "MyTopic",
"payload": "B"
},
"delay": 1250
},
{
"data": {
"topic": "MyTopic",
"payload": "C"
},
"delay": 795
}
]
}
nameyou already guessed it, the name of the sequence to call it to play, pause or stop inplayerseqthe actual sequence, which contains an array of element objects.datathis object will be put into a new msg when being replayed.delaythe time in milliseconds, the player waits before thedatacontent is being sent.
To get started, use these commands, to use the nodes.
Following commands are available:
msg.startrecords a new sequencemsg.stopstops current recording and return already recorded sequence
When recording stops, the recorded sequence will be emitted as a single message.
A player node can run multiple sequences in parallel. These are identified by the sequence name. Following commands are available:
msg.nameThe name of the sequence being played, paused, stopped or loaded. Sequence objects already contain a name, which can be overwritten with this.msg.sequenceload sequences into player (format: JSON or sequence object)msg.playplays the loaded sequence(s). Property value = sequence name(s)msg.pausepauses the currently played sequence / proceed with msg.playmsg.stopstops the currently played sequence(s) / start over with msg.playmsg.removeremoves a sequence from the playermsg.enumerateemits an array containing all names of currently loaded sequences
play, pause, stop and remove properties take either a string or an array containing the name(s). If the value is an empty string it is assumed, that all loaded sequences shall be played / paused / stopped or removed.
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