Initial commit

flow/tcpipserver.js

@@ -0,0 +1,169 @@
+exports.id = 'tcpserver';
+exports.title = 'TCP/IP Server';
+exports.version = '1.0.4';
+exports.group = 'TCP/IP';
+exports.color = '#888600';
+exports.output = ["red", "white"];
+exports.click = false;
+exports.author = 'Jakub Klena';
+exports.icon = 'server';
+exports.options = { ip: '0.0.0.0', port: 8421, edge: "M6ogKQW09bOXewAYvZyvkn5JrV1aRnPGE37p42Nx" };
+
+exports.html = `<div class="padding">
+	<div class="row">
+		<div class="col-md-6">
+			<div data-jc="textbox" data-jc-path="ip" data-jc-config="placeholder:0.0.0.0;required:true" class="m">IP</div>
+		</div>
+		<div class="col-md-6">
+			<div data-jc="textbox" data-jc-path="port" data-jc-config="placeholder:8421;required:true" class="m">Port</div>
+		</div>
+	</div>
+	<div class="row">
+		<div class="col-md-6">
+			<div data-jc="textbox" data-jc-path="edge" data-jc-config="placeholder:M6ogKQW09bOXewAYvZyvkn5JrV1aRnPGE37p42Nx;required:true" class="m">Edge TB Name</div>
+		</div>
+	</div>
+</div>`;
+
+exports.readme = `# TCP Server
+## Outputs
+
+ - *Red* - ERROR output
+ - *White* - Incomming message output
+`;
+
+
+
+
+exports.install = function(instance) {
+
+  let net = require('net');
+  let server = null;
+  let myip = "0.0.0.0";
+  let myport = 8421;
+  let myedge = "M6ogKQW09bOXewAYvZyvkn5JrV1aRnPGE37p42Nx";
+  let interv = null;
+  let ERRWEIGHT = {
+    EMERGENCY: "emergency", // System unusable
+    ALERT: "alert",         // Action must be taken immidiately
+    CRITICAL: "critical",   // Component unable to function
+    ERROR: "error",         // Error, but component able to recover from it
+    WARNING: "warning",     // Possibility of error, system running futher
+    NOTICE: "notice",       // Significant message but not an error, things user might want to know about
+    INFO: "informational",  // Info
+    DEBUG: "debug"          // Debug - only if CONFIG.debug is enabled
+  }
+
+  setTimeout(function(){
+    if (server !== null){
+      if (server.listening){
+        instance.status("Listening", "green");
+      } else {
+        instance.status("Not listening", "red");
+      }
+    }
+  }, 5000);
+
+  function resetServer(){
+    sendError(myedge, "resetServer", ERRWEIGHT.DEBUG, "resetServer called !", {});
+    if (server !== null){
+      sendError(myedge, "resetServer", ERRWEIGHT.DEBUG, "Server already exists", {});
+      server.close(function(){
+        sendError(myedge, "resetServer", ERRWEIGHT.DEBUG, "Server closed intentionally", {});
+        server = null;
+        resetServer();
+      });
+    } else {
+      sendError(myedge, "resetServer", ERRWEIGHT.DEBUG, "Server doesn’t exist", {});
+      server = net.createServer((c) => {
+        sendError(myedge, "resetServer", ERRWEIGHT.INFO, "New client connected !", {"ip":c.localAddress, "port":c.localPort});
+        c.on("data", (d) => {
+          sendOutputMsg({
+            "ip":c.localAddress,
+            "port":c.localPort,
+            "data":d.toString()
+          });
+        });
+        c.on('end', () => {
+          sendError(myedge, "resetServer", ERRWEIGHT.INFO, "Client disconnected !", {"ip":c.localAddress, "port":c.localPort});
+        });
+      });
+      server.listen(myport, myip);
+    }
+  };
+
+  function isJson(str) {
+    try {
+        JSON.parse(str);
+    } catch (e) {
+        return false;
+    }
+    return true;
+  }
+  
+  instance.reconfigure = function() {
+
+    //code
+    myip = instance.options.ip;
+    myport = instance.options.port;
+    myedge = instance.options.edge;
+
+    setTimeout(resetServer, 5000);
+
+  };
+  
+  instance.close = function() {
+    // close sockets and such
+    if (server !== null){
+      server.close(function(){});
+    }
+  };
+
+  function sendError(device, func, weight, str, extra){
+    
+    let content = {
+      "type": weight,
+      "status": "new",
+      "source": {
+        "function":func,
+        "component":instance.id,
+        "component_name":instance.name
+      },
+      "message":str,
+      "message_data": extra
+    };
+
+    let error = {};
+    error[device] = [
+      {
+        "ts": Date.now(),
+        "values": {
+          "_event":content
+        }
+      }
+    ];
+
+    instance.send(0, error);
+  }
+
+  function sendOutputMsg(str){
+    instance.send(1, str);
+  }
+
+  instance.on('options', instance.reconfigure);
+  instance.reconfigure();
+
+  function humanReadableTimeAndDate(){
+    let date_ob = new Date();
+
+    let date = ("0" + date_ob.getDate()).slice(-2);
+    let month = ("0" + (date_ob.getMonth() + 1)).slice(-2);
+    let year = date_ob.getFullYear();
+    
+    let hours = ("0" + date_ob.getHours()).slice(-2);
+    let minutes = ("0" + date_ob.getMinutes()).slice(-2);
+    let seconds = ("0" + date_ob.getSeconds()).slice(-2);
+
+    return date+"."+month+"."+year+" "+hours+":"+minutes+":"+seconds;
+  }
+};