Merge branch 'release-2.1'

Dockerfile

@@ -1,18 +1,28 @@
-FROM node:16-alpine
+# ---- Base ----
+FROM alpine:3 AS base
 
 # Create app directory
 WORKDIR /usr/src/app
 
+# Copy project file
+COPY package.json .
+
+# Install required apk-packages
+RUN apk add --no-cache nodejs npm tcpdump
+
+
+# ---- Dependencies ----
+FROM base AS dependencies
+
 # Install app dependencies
-COPY package*.json ./
+RUN npm install --only=production
-RUN npm install
 
-# remove development dependencies
-RUN npm prune --production
 
-# Install required apk-packages & delete cache
+# ---- Release ----
-RUN apk update && apk add tcpdump && rm -rf /var/cache/apk/*
+FROM base AS release
 
+# copy from build image
+COPY --from=dependencies /usr/src/app/ ./
 # Bundle app source
 COPY ./src/ .
 

README.md

@@ -17,10 +17,12 @@ Table of contents
   - [1.1. What kind of data](#11-what-kind-of-data)
   - [1.2. Data-Usage](#12-data-usage)
   - [1.3. Tools used](#13-tools-used)
+  - [1.4. Architecture](#14-architecture)
 - [2. Usage/Installation](#2-usageinstallation)
   - [2.1. Prerequisites](#21-prerequisites)
-    - [2.2. Running with Docker](#22-running-with-docker)
+  - [2.2. Choosing an Export-Method](#22-choosing-an-export-method)
-    - [2.3. Environment-Variables](#23-environment-variables)
+  - [2.3. Running with Docker](#23-running-with-docker)
+  - [2.4. Environment-Variables](#24-environment-variables)
 - [3. Data collected](#3-data-collected)
   - [3.1. Data-Types](#31-data-types)
   - [3.2. Metric-Overview](#32-metric-overview)
@@ -80,6 +82,14 @@ e.g.
 The program uses `tcpdump` for listening in a subProcess and then extract the metadata when packets arrive.
 
 
+<br>
+
+## 1.4. Architecture
+
+![](docs/img/1.4.architecture.png)
+
+The system heavily uses NodeJS-Streams to read, transform and pass data around.
+
 <br>
 
 # 2. Usage/Installation
@@ -113,18 +123,34 @@ iw dev <interface> set channel <channelNumber>
 
 <br>
 
-## 2.2. Running with Docker
+## 2.2. Choosing an Export-Method
+
+The system allows exporting directly into [InfluxDB](https://docs.influxdata.com/influxdb) version >= 2.0 or into any system using the [InfluxDb-Line-Protocol](https://docs.influxdata.com/influxdb/v2.1/reference/syntax/line-protocol/) e.g. [QuestDB](https://questdb.io/) over TCP.
+
+As of writing (using InfluxDB v2.1 and using the *flux*-language), the data written by this system was a bit too much for InfluxDB and it struggled very quickly on a fairly beefy machine.
+
+Thats why the additional LineProtocol-Export-Method was added. Freedom of choice of the Time-Database.
+
+<br>
+
+If you want to use the InfluxDB-Line-Protocol, simply set the environment variable `USE_INFLUXDB_LINEPROTOCOL` to `true` along with the-other necessary Host and Port-variables.
+
+<br>
+
+## 2.3. Running with Docker
 
-### 2.2.1. Permissions
+### 2.3.1. Permissions
 
 The container must run as **root**, to have permission to listen on the wifi-interface.
 
 <br>
 
-### 2.2.2. docker run
+### 2.3.2. docker run
 
 Either run with docker directly.
 
+<details><summary>for InfluxDB</summary>
+
 ```sh
 docker run
   -d
@@ -134,18 +160,35 @@ docker run
   -e INFLUX_URL="http://influxdb:8086/"
   -e INFLUX_TOKEN="<yourToken>"
   -e INFLUX_ORG="<yourOrganisation>"
-  -e INFLUX_BUCKET="<yourBucket>"
   ruakij/rfmon-to-influx:2
 ```
+</details>
+
+<details><summary>for InfluxDB-Line-Protocol</summary>
+
+```sh
+docker run
+  -d
+  --restart unless-stopped 
+  --network host
+  -e WIFI_INTERFACE="<yourInterfaceName or leave empty for wlan0>"
+  -e USE_INFLUXDB_LINEPROTOCOL="true"
+  -e INFLUXDB_LINEPROTOCOL_HOST="<host>"
+  -e INFLUXDB_LINEPROTOCOL_PORT="<port>"
+  ruakij/rfmon-to-influx:2
+```
+</details>
 
 <br>
 
-### 2.2.3. docker-compose
+### 2.3.3. docker-compose
 
 Or use the more preferred way with docker-compose.
 
 `docker-compose.yml`
 
+<details><summary>for InfluxDB</summary>
+
 ```yaml
 version: '3'
 
@@ -162,6 +205,28 @@ services:
       - INFLUX_ORG="<yourOrganisation>"
       - INFLUX_BUCKET="<yourBucket>"
 ```
+</details>
+
+<details><summary>for InfluxDB-Line-Protocol</summary>
+
+```yaml
+version: '3'
+
+services:
+  rfmon:
+    container_name: rfmon
+    image: ruakij/rfmon-to-influx:2
+    restart: unless-stopped
+    network_mode: "host"
+    environment:
+      - WIFI_INTERFACE="<yourInterfaceName or leave empty for wlan0>"
+      - USE_INFLUXDB_LINEPROTOCOL="true"
+      - INFLUXDB_LINEPROTOCOL_HOST="<host>"
+      - INFLUXDB_LINEPROTOCOL_PORT="<port>"
+```
+</details>
+
+<br>
 
 And then pull&start the container:
 ```sh
@@ -170,9 +235,11 @@ docker-compose up -d
 
 <br>
 
-## 2.3. Environment-Variables
+## 2.4. Environment-Variables
 
-### 2.3.1. Necessary
+### 2.4.1. Necessary
+
+<details><summary>for InfluxDB</summary>
 
 Variable|Description
 ---|---
@@ -180,15 +247,25 @@ Variable|Description
 `INFLUX_TOKEN`  | Token with write-access
 `INFLUX_ORG`    | Organisation and..
 `INFLUX_BUCKET` | Bucket to write into
+</details>
+
+<details><summary>for InfluxDB-Line-Protocol</summary>
+
+Variable|Description
+---|---
+`USE_INFLUXDB_LINEPROTOCOL`     | Enable LineProtocol
+`INFLUXDB_LINEPROTOCOL_HOST`    | Host and..
+`INFLUXDB_LINEPROTOCOL_PORT`    | Port of your server
+</details>
 
 <br>
 
-### 2.3.2. Optional
+### 2.4.2. Optional
 
 Variable|Default|Description
 ---|---|---
 `LOGLEVEL`          | INFO              | Loglevel
-`WIFI_INTERFACE`    | wlan0             | Token with write-access
+`WIFI_INTERFACE`    | wlan0             | Wifi-Interface name in Monitor-Mode
 ~~`HOSTNAME`~~          | ~~Device's Hostname~~ | ~~Hostname to use as global hostname-tag~~ *(Unused)*
 
 <br>

build/docker-multiarch.sh

@@ -0,0 +1,9 @@
+TAG="ruakij/rfmon-to-influx"
+PLATFORM="linux/amd64,linux/arm64/v8,linux/arm/v7"
+EXTRA_ARGS="$@"
+
+docker buildx build \
+--platform $PLATFORM \
+--tag $TAG \
+$EXTRA_ARGS \
+.

build/docker-ownarch.sh

@@ -0,0 +1,7 @@
+TAG="ruakij/rfmon-to-influx"
+EXTRA_ARGS="$@"
+
+docker build \
+--tag $TAG \
+$EXTRA_ARGS \
+.

src/main.js

@@ -14,6 +14,8 @@ const { RegexBlockStream } = require("./streamHandler/RegexBlockStream.js");
 const { PacketStreamFactory } = require("./streamHandler/PacketStreamFactory.js");
 const { PacketInfluxPointFactory } = require("./streamHandler/PacketInfluxPointFactory.js");
 const { InfluxPointWriter } = require("./streamHandler/InfluxPointWriter.js");
+const { InfluxDbLineProtocolWriter } = require("./streamHandler/InfluxDbLineProtocolWriter.js");
+const { InfluxPointToLineProtoStream } = require("./streamHandler/InfluxPointToLineProtoStream.js");
 
 const userHelper = require("./helper/userHelper.js");
 
@@ -25,9 +27,14 @@ const env = process.env;
     env.LOGLEVEL            ??= "INFO";
     env.WIFI_INTERFACE      ??= "wlan0";
     env.HOSTNAME            ??= Os.hostname();
+
+    env.USE_INFLUXDB_LINEPROTOCOL   ??= false;
 }
 // Required vars
-let errorMsg = requireEnvVars([
+let errorMsg = requireEnvVars(
+    env.USE_INFLUXDB_LINEPROTOCOL? [    // When lineprotocol is enabled, we need host and port
+        "INFLUXDB_LINEPROTOCOL_HOST", "INFLUXDB_LINEPROTOCOL_PORT",
+    ] : [       // When its disabled, influxdb-data
         "INFLUX_URL", "INFLUX_TOKEN",
         "INFLUX_ORG", "INFLUX_BUCKET"
     ]);
@@ -37,6 +44,8 @@ if(errorMsg){
 }
 
 (async function() {
+    let pointWriter;
+    if(!env.USE_INFLUXDB_LINEPROTOCOL){
         logger.info("Setup Influx..");
         const influxDb = new InfluxDB({url: env.INFLUX_URL, token: env.INFLUX_TOKEN});
 
@@ -61,7 +70,46 @@ if(errorMsg){
         logger.debug("Get WriteApi & set default-hostname to", `'${env.HOSTNAME}'`);
         const influxWriteApi = influxDb.getWriteApi(env.INFLUX_ORG, env.INFLUX_BUCKET, "us");
         //influxWriteApi.useDefaultTags({"hostname": env.HOSTNAME});
+
+        pointWriter = new InfluxPointWriter(influxWriteApi);
+
         logger.info("Influx ok");
+    }
+    else {
+        logger.info("Setup Influxdb-LineProtocol..");
+
+        let lineProtocolWriter = new InfluxDbLineProtocolWriter(env.INFLUXDB_LINEPROTOCOL_HOST, env.INFLUXDB_LINEPROTOCOL_PORT);
+
+        logger.debug("Create PointToLineProto and pipe to LineProtocolWriter");
+        pointWriter = new InfluxPointToLineProtoStream();
+        pointWriter
+            .setEncoding("utf8")
+            .pipe(lineProtocolWriter);
+        
+        logger.debug("Waiting for connection..");
+        await new Promise((resolve, reject) => {
+            lineProtocolWriter.once("connect", () => {
+                resolve();
+            });
+            lineProtocolWriter.once("error", (err) => {
+                reject(err);
+            });
+            setTimeout(() => {  // After timeout, reject promise
+                reject("Timeout whilst waiting to connect");
+            }, 6500);
+        })
+            .then(() => {
+                logger.info("Influxdb-LineProtocol ok");
+            })
+            .catch((err) => {
+                if(err) {
+                    logger.error("Error whilst checking Influxdb-LineProtocol:");
+                    logger.error(err);
+                }
+                logger.fatal("Setup Influxdb-LineProtocol failed!");
+                exit(1);
+            });
+    }
 
     logger.info("Starting tcpdump..");
     const TCPDUMP_BASECMD = "tcpdump -vvv -e -n -X -s0 -i";
@@ -72,13 +120,12 @@ if(errorMsg){
     let regexBlockStream = new RegexBlockStream(/^\d{2}:\d{2}:\d{2}.\d{6}.*(\n( {4,8}|\t\t?).*)+\n/gm);
     let packetStreamFactory = new PacketStreamFactory();
     let packetInfluxPointFactory = new PacketInfluxPointFactory();
-    let influxPointWriter = new InfluxPointWriter(influxWriteApi);
     proc.stdout
         .setEncoding("utf8")
         .pipe(regexBlockStream)
         .pipe(packetStreamFactory)
         .pipe(packetInfluxPointFactory)
-        .pipe(influxPointWriter);
+        .pipe(pointWriter);
 
     logger.debug("Attaching error-logger..");
     const loggerTcpdump = logFactory("tcpdump");

src/streamHandler/InfluxDbLineProtocolWriter.js

@@ -0,0 +1,72 @@
+const logger = require.main.require("./helper/logger.js")("InfluxDbLineProtocolWriter");
+const net = require("net");
+
+/**
+ * Get points and write them into influx
+ */
+class InfluxDbLineProtocolWriter extends net.Socket{
+    /**
+     * 
+     * @param {string} host Host of line-server
+     * @param {string} port Port of line-server
+     * @param {object} options Options for further configuration
+     */
+    constructor(host, port, options = {}) {
+        super();
+
+        this._host = host;
+        this._port = port;
+
+        // options defaults
+        options.autoConnect     ??= true;
+        options.timeout         ??= 5000;
+        options.autoReconnect   ??= true;
+        options.autoReconnectBackoffTime    ??= 3000;
+        this._options = options;
+
+        this._isConnected = false;
+
+        super.setKeepAlive(true, 5000);
+
+        // Register auto-Reconnect if enabled
+        if(this._options.autoReconnect){
+            this.on("connect", () => {
+                logger.debug("Connection established!");
+                this._isConnected = true;
+
+                if(this._autoReconnectTimeout)
+                    clearInterval(this._autoReconnectTimeout);
+                this._autoReconnectTimeout = 0;
+            });
+
+            this.on("error", (err) => {
+                logger.error(err.code, "TCP ERROR");
+                this._isConnected = false;
+                
+                if(!this._autoReconnectTimeout)
+                    this._autoReconnectTimeout = setInterval(() => {
+                        this.connect();
+                    },
+                    this._options.autoReconnectBackoffTime);
+            });
+        }
+
+        // Autoconnect if requested
+        if(this._options.autoConnect) this.connect();
+    }
+
+    get host(){ return this._host; }
+    get port(){ return this._port; }
+
+    get isConnected(){ return this._isConnected; }
+
+    connect(){
+        logger.debug("Connecting..");
+        super.connect(this._port, this._host);
+    }
+}
+
+// Specify exports
+module.exports = {
+    InfluxDbLineProtocolWriter
+};

src/streamHandler/InfluxPointToLineProtoStream.js

@@ -0,0 +1,22 @@
+const logger = require.main.require("./helper/logger.js")("InfluxPointToLineProtoStream");
+const { Transform } = require("stream");
+
+/**
+ * Get points and converts them to Line-protocol
+ */
+class InfluxPointToLineProtoStream extends Transform{
+    constructor(){
+        super({
+            writableObjectMode: true
+        });
+    }
+
+    _transform(point, encoding, next){
+        next(null, point.toLineProtocol() +"\n");
+    }
+}
+
+// Specify exports
+module.exports = {
+    InfluxPointToLineProtoStream
+};

src/streamHandler/PacketStreamFactory.js

@@ -47,6 +47,13 @@ class PacketStreamFactory extends Transform{
     }
 
     _transform(chunk, encoding, next){
+        if(!chunk){
+            const err = "Chunk was invalid!";
+            logger.error(err);
+            next(err);
+            return;
+        }
+
         let packet = new Packet();
         
         const lines = chunk.split("\n");