MQTT Logger Dashboard UI
Based on http://www.steves-internet-guide.com/node-red-mqtt-topic-logger/, https://flows.nodered.org/flow/db68bd4934cf46f39e6e453a348bc419 and https://discourse.nodered.org/t/file-manager-in-node-red-dashboard/14350
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store topic =\"+ store_topic +start_logger);\n//\nfunction get_filename(topic,payload)\n{\n\n if (!(topic in local))\n\tlocal[topic]={}; //create\n\nvar filename=local[topic][\"cf_name\"] || \"log000.txt\";\n\n//node.log(filename);\nvar cf_counter=local[topic].cf_counter || 0;\nvar cf_size=local[topic].cf_size || 0;\n//node.log(\"file size=\"+cf_size +\" counter \"+cf_counter);\ncf_size = cf_size +payload.length;\n\nif (cf_size>max_size)\n{\n//node.log(\"size limit reached\")\ncf_counter+=1\nvar count=cf_counter.toString();\nif (count.length==1)\ncount=\"00\"+count;\nif (count.length==2)\ncount=\"0\"+count;\n//\nfilename=\"log\"+count+\".txt\";\ncf_size=0;\n}\n//node.log(\"file size=\"+cf_size +\" counter \"+cf_counter);\n//\nlocal[topic][\"cf_name\"]=filename;\nlocal[topic][\"cf_counter\"]= cf_counter;\nlocal[topic][\"cf_size\"]= cf_size;\nflow.set(\"local\",local);\nmsg2.payload=cf_counter;\n\n//\nreturn filename;\n\n\n}\nfunction message_changed(payload,topic)\n{\n \tif (!local.all_data) //not logging all data\n\t { \n\t\tif (!(local[topic]===undefined)) //test exists\n\t\t{\n\t\n\t\tlast_payload=local[topic][\"last_payload\"];\n\n\t\t//node.log(\"last payload \"+ last_payload);\n\t\t//node.log(\"This payload \"+ payload);\n\t\t}\n\t\telse\n\t\t\t\tlocal[\"topic\"]={}; //initialise\n\n\t\t//\n\t\tif (payload===last_payload)\n\t\t{\n\t\t//node.log(\"same data \"+topic +\"not logging\");\n\t\treturn false;\n\t\t}\n\t} \n\treturn true;\n}\n\n//node.log(\"start_logger is \"+start_logger);\n\nif (start_logger) {\n //node.log(\"logging all data \"+local.all_data+ \"by topic\"+local.by_topic);\n //\n var d = new Date();\n var t = d.getTime();\n try {\n new_payload=JSON.parse(payload); //convert to javascript\n //node.log(\"data is already Json\");\n payload=new_payload;\n } catch (e){\n \t//node.log(\"data is not Json\");\n }\n \n if (store_time && store_topic)\n \tpayload={\"time\":t,\"payload\":payload,\"topic\":topic};\n if (store_time && !store_topic)\n \tpayload={\"time\":t,\"payload\":payload};\n if (!store_time && store_topic)\n \tpayload={\"payload\":payload,\"topic\":topic};\n if (!store_time && !store_topic)\n \tpayload={\"payload\":payload};\n\n payload=JSON.stringify(payload);\n //node.log(\"payload is \",payload);\n\n if (local.by_topic == true)\n var topic = msg.topic;\n else\n var topic = \"default\";\n \n var filename = get_filename(topic, payload);\n\n l = topic.length;\n if (topic[l-1] !=\"/\")\n msg.filename = \"/data/logs/\"+ topic +\"/\"+filename;\n else\n msg.filename = \"/data/logs/\"+ topic +filename;\n //node.log(\"filename= \"+msg.filename);\n msg.payload=payload;\n if(message_changed(payload,topic))\n {\n local[topic][\"last_payload\"]=payload;\n flow.set('local',local);\n \n return [msg,msg2];\n }\n else\n return [null,msg2];\n}\n\nreturn 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local];\n","outputs":2,"noerr":0,"initialize":"","finalize":"","x":950,"y":360,"wires":[["fab81943.82c798"],["4453f06b.e1d21","c667bb5f.1ce318","5b460ad7.0eab64","3a770e45.7b6742","f7acb410.e48fa8"]]},{"id":"b67fde56.64ef6","type":"ui_button","z":"db25dd5a.e0843","name":"","group":"cb8e26b1.e5c788","order":0,"width":0,"height":0,"passthru":true,"label":"RESET","tooltip":"","color":"","bgcolor":"","icon":"","payload":"true","payloadType":"bool","topic":"RESET","x":380,"y":220,"wires":[["11cc03ba.5c7bec","632e8cff.3bd524","34815aff.370a06","77dddf6.d42d82"]]},{"id":"7ff0c396.b65c0c","type":"ui_switch","z":"db25dd5a.e0843","name":"","label":"Store 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flow.get('local')];\n","outputs":3,"noerr":0,"initialize":"","finalize":"","x":960,"y":220,"wires":[["5bf6e125.be577"],["fab81943.82c798"],["4453f06b.e1d21","f7acb410.e48fa8"]]},{"id":"34815aff.370a06","type":"ui_switch","z":"db25dd5a.e0843","name":"","label":"Start Logging","tooltip":"","group":"cb8e26b1.e5c788","order":1,"width":0,"height":0,"passthru":true,"decouple":"false","topic":"START","style":"","onvalue":"true","onvalueType":"bool","onicon":"","oncolor":"","offvalue":"false","offvalueType":"bool","officon":"","offcolor":"","x":450,"y":300,"wires":[["21303d3a.8f5512"]]},{"id":"e282e4e4.fbe028","type":"function","z":"db25dd5a.e0843","name":"Set Switches","func":"var local=flow.get('local') || {};\nvar topic=msg.topic;\nvar msg1={};\nvar msg2={};\nmsg2.payload=\"\";\nvar by_topic=local[\"by_topic\"]|| false; // log by topic\nvar all_data=local[\"all_data\"] || true; // log all data or only changed data\nvar store_time=local[\"store_time\"] ||false;\nvar store_topic=local[\"store_topic\"] ||false;\nvar start_logger=local[\"start_logger\"] || false;\nvar ignore_switches=local['ignore-switches'] || false;\npayload=msg.payload;\nnode.log(\"in switch status\");\n\nfunction reset()\n{\nlocal={};\nlocal[\"all_data\"]=true\n local[\"by_topic\"]=false; \n local[\"store_topic\"]=false; \n local[\"all_data\"]=true;\n local[\"store_time\"]=false; \n local['ignore-switches']=false;\n local[\"start_logger\"]=false;\n \n}\n\tif (topic==\"RESET\")\n\t{\n\t reset(); //reset stored data to default\n\t flow.set('local',local);\n\t msg2.payload=\"Manual Reset\";\n\t node.log(\"start_logger is \"+local[\"start_logger\"]);\n\t msg1.payload=\"Logging Stopped\";\n\t return[msg1,msg2];\n\t \n\t}\n\n\tif (topic==\"START\")\n\t{\n\t\tif (payload){\n\t\t\tnode.log(\"start_logger \");\n\t\t\tlocal[\"start_logger\"]=payload;\n\t\t\tlocal['ignore-switches']=true;\n\t\t\tflow.set('local',local);\n\t\t\tnode.log(\"start_logger \"+local.start_logger)\n\t\t\tmsg1.payload=\"Logging started\";\n\t\t\t\n\t\t\treturn [msg1,msg2];\n\t\t}\n\telse\n\t{\n\t\t\tmsg1.payload=\"Logging Stopped\";\n\t\t\tlocal[\"start_logger\"]=false;\n\t\t\treset(); //reset stored data to default\n\t\t\tflow.set('local',local);\n\t\t\tmsg2.payload=false //reset switches\n\t\t\treturn [msg1,msg2];\n\t}\n\t}\n\t\t\n\tif (topic==\"BY-TOPIC\" && !ignore_switches)\n\t{\n\t\tif (payload)\n\t\t{\n\t\t local[\"by_topic\"]=true;\n\t\t flow.set('local',local);\n\t\t return [null,msg2];\n\t\t}\n\t\telse\n\t\t{\n\t\t local[\"by_topic\"]=false;\n\t\t flow.set('local',local);\n\t\t return [null,msg2];\n\t\t}\t\n\t}\n\tif (topic==\"ALL-DATA\" && !ignore_switches)\n\t{\n\t\tif (payload)\n\t\t{\n\n\t\t local[\"all_data\"]=true;\n\t\t flow.set('local',local);\n\t\t return [null,msg2];\n\t\t}\n\t\telse\n\t\t{\n\n\t\t local[\"all_data\"]=false;\n\t\t flow.set('local',local);\n\t\t return [null,msg2];\n\t\t}\n\t}\n\tif (topic==\"STORE-TOPIC\" && !ignore_switches)\n\t{\n\t\tif (payload)\n\t\t{\n\t\t local[\"store_topic\"]=true;\n\t\t flow.set('local',local);\n\t\t return [null,msg2];\n\t\t}\n\telse\n\t\t{\n\t\t local[\"store_topic\"]=false;\n\t\t flow.set('local',local);\n\t\t return [null,msg2];\n\t\t}\n\t}\n\t\n\tif (topic==\"STORE-TIME\" && !ignore_switches)\n\t{\n\t\tif (payload)\n\t\t{\n\t\t local[\"store_time\"]=true;\n\t\t flow.set('local',local);\n\t\t return [null,msg2];\n\t\t}\n\telse\n\t\t{\n\t\t local[\"store_time\"]=false;\n\t\t flow.set('local',local);\n\t\t return [null,msg2];\n\t\t}\n\t}\t\t\n\n\n\n\n","outputs":2,"noerr":0,"initialize":"","finalize":"","x":970,"y":580,"wires":[[],[]]},{"id":"19b9e092.85847f","type":"change","z":"db25dd5a.e0843","name":"reset state store 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