I have a node-red flow where I need to do 2 rest calls and then do some data operations based on the results of those two calls.
The only way how I could solve it was to do both calls one after the other
Is there a way in node-red to branch a flow and then join again like
The function node above would be invoked twice. What I need is a node which would have multiple inputs and then wait for each msg.payload to arrive before it starts with the processing.
Thanks
It is possible, using the split and join nodes.
Take a look at this example:
[{"id":"8eb8c9c4.605e88","type":"http in","z":"abe521f2.f083a","name":"","url":"/parallel","method":"get","upload":false,"swaggerDoc":"","x":124.5,"y":632,"wires":[["dff9f95f.6f84f8"]]},{"id":"dff9f95f.6f84f8","type":"change","z":"abe521f2.f083a","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"{\"httpbin\":\"http://httpbin.org/get\",\"anything\":\"http://httpbin.org/anything/get\"}","tot":"json"}],"action":"","property":"","from":"","to":"","reg":false,"x":356.5,"y":631,"wires":[["4b5a9dfb.439594"]]},{"id":"4b5a9dfb.439594","type":"split","z":"abe521f2.f083a","name":"","splt":"\n","spltType":"str","arraySplt":1,"arraySpltType":"len","stream":false,"addname":"topic","x":526.5,"y":631,"wires":[["8238bd1f.80e7f"]]},{"id":"8238bd1f.80e7f","type":"switch","z":"abe521f2.f083a","name":"","property":"topic","propertyType":"msg","rules":[{"t":"eq","v":"httpbin","vt":"str"},{"t":"eq","v":"anything","vt":"str"}],"checkall":"true","outputs":2,"x":655.5,"y":631,"wires":[["ada1d5f5.b43148"],["7400821e.6dd82c"]]},{"id":"ada1d5f5.b43148","type":"http request","z":"abe521f2.f083a","name":"REST Service 1","method":"GET","ret":"obj","url":"{{{payload}}}","tls":"","x":833.5,"y":590,"wires":[["99c15809.ccd4c8"]]},{"id":"7400821e.6dd82c","type":"http request","z":"abe521f2.f083a","name":"REST Service 2","method":"GET","ret":"obj","url":"http://httpbin.org/anything/get","tls":"","x":834,"y":672,"wires":[["99c15809.ccd4c8"]]},{"id":"99c15809.ccd4c8","type":"join","z":"abe521f2.f083a","name":"","mode":"auto","build":"string","property":"payload","propertyType":"msg","key":"topic","joiner":"\n","joinerType":"str","accumulate":"false","timeout":"","count":"","x":1015.5,"y":626,"wires":[["6a617e7c.5a6de"]]},{"id":"6a617e7c.5a6de","type":"http response","z":"abe521f2.f083a","name":"","statusCode":"","headers":{},"x":1162,"y":626,"wires":[]}]
