From 1135dc3e3076b604ba22cd6b02400dddb8d3edcf Mon Sep 17 00:00:00 2001
From: marcelspryszynski <marcel.spryszynski@gmail.com>
Date: Wed, 26 Mar 2025 20:16:27 +0100
Subject: [PATCH] Added hashcat and speedtest workflow

---
 examples/Hashcat/README.md                   |   6 +
 examples/Hashcat/filter.js                   |  28 ++
 examples/Hashcat/functions.js                |  83 +++++
 examples/Hashcat/generate.js                 |  35 ++
 examples/Hashcat/handler.js                  |  76 +++++
 examples/Hashcat/hashcat.js                  |  44 +++
 examples/Hashcat/hashcat.png                 | Bin 0 -> 20716 bytes
 examples/Hashcat/package-lock.json           | 322 +++++++++++++++++++
 examples/Hashcat/package.json                |  14 +
 examples/Hashcat/summarize.js                |  17 +
 examples/Hashcat/workflow.json               | 140 ++++++++
 examples/HashcatKubernetes/Dockerfile        |  50 +++
 examples/HashcatKubernetes/DockerfileData    |   4 +
 examples/HashcatKubernetes/filter.js         |  27 ++
 examples/HashcatKubernetes/generate.js       |  35 ++
 examples/HashcatKubernetes/handler.js        |  76 +++++
 examples/HashcatKubernetes/hashcat.js        |  44 +++
 examples/HashcatKubernetes/package-lock.json | 322 +++++++++++++++++++
 examples/HashcatKubernetes/package.json      |  14 +
 examples/HashcatKubernetes/summarize.js      |  17 +
 examples/HashcatKubernetes/workflow.json     | 177 ++++++++++
 examples/SpeedTest/Dockerfile                |  34 ++
 examples/SpeedTest/DockerfileData            |   4 +
 examples/SpeedTest/handler.js                |  76 +++++
 examples/SpeedTest/package.json              |  14 +
 examples/SpeedTest/speedtest.js              |  34 ++
 examples/SpeedTest/workflow.json             |  28 ++
 27 files changed, 1721 insertions(+)
 create mode 100644 examples/Hashcat/README.md
 create mode 100644 examples/Hashcat/filter.js
 create mode 100644 examples/Hashcat/functions.js
 create mode 100644 examples/Hashcat/generate.js
 create mode 100644 examples/Hashcat/handler.js
 create mode 100644 examples/Hashcat/hashcat.js
 create mode 100644 examples/Hashcat/hashcat.png
 create mode 100644 examples/Hashcat/package-lock.json
 create mode 100644 examples/Hashcat/package.json
 create mode 100644 examples/Hashcat/summarize.js
 create mode 100644 examples/Hashcat/workflow.json
 create mode 100644 examples/HashcatKubernetes/Dockerfile
 create mode 100644 examples/HashcatKubernetes/DockerfileData
 create mode 100755 examples/HashcatKubernetes/filter.js
 create mode 100755 examples/HashcatKubernetes/generate.js
 create mode 100644 examples/HashcatKubernetes/handler.js
 create mode 100755 examples/HashcatKubernetes/hashcat.js
 create mode 100644 examples/HashcatKubernetes/package-lock.json
 create mode 100644 examples/HashcatKubernetes/package.json
 create mode 100755 examples/HashcatKubernetes/summarize.js
 create mode 100644 examples/HashcatKubernetes/workflow.json
 create mode 100644 examples/SpeedTest/Dockerfile
 create mode 100644 examples/SpeedTest/DockerfileData
 create mode 100644 examples/SpeedTest/handler.js
 create mode 100644 examples/SpeedTest/package.json
 create mode 100644 examples/SpeedTest/speedtest.js
 create mode 100644 examples/SpeedTest/workflow.json

diff --git a/examples/Hashcat/README.md b/examples/Hashcat/README.md
new file mode 100644
index 0000000..59ee9c8
--- /dev/null
+++ b/examples/Hashcat/README.md
@@ -0,0 +1,6 @@
+Hashcat dictionary:
+npm install
+hflow run .
+
+Workflow diagram:
+![img.png](hashcat.png)
\ No newline at end of file
diff --git a/examples/Hashcat/filter.js b/examples/Hashcat/filter.js
new file mode 100644
index 0000000..3be577a
--- /dev/null
+++ b/examples/Hashcat/filter.js
@@ -0,0 +1,28 @@
+const fs = require('fs');
+
+function filterHashes() {
+    const hashes = fs.readFileSync("hashes.txt", 'utf8').trim().split('\n');
+
+    const groupedHashes = {
+        md5: [],
+        sha1: [],
+        sha256: [],
+        sha512: [],
+        'sha3-256': []
+    };
+
+    hashes.forEach(line => {
+        const [hash, algorithm] = line.split(' ');
+        if (groupedHashes[algorithm]) {
+            groupedHashes[algorithm].push(hash);
+        }
+    });
+
+    // Write hashes to separate files by algorithm
+    Object.keys(groupedHashes).forEach(algorithm => {
+        const filename = `${algorithm}_hashes.txt`;
+        fs.writeFileSync(filename, groupedHashes[algorithm].join('\n'), 'utf8');
+    });
+}
+
+filterHashes()
\ No newline at end of file
diff --git a/examples/Hashcat/functions.js b/examples/Hashcat/functions.js
new file mode 100644
index 0000000..fc249b4
--- /dev/null
+++ b/examples/Hashcat/functions.js
@@ -0,0 +1,83 @@
+var spawn = require('child_process').spawn;
+var log4js = require('log4js');
+var createJobMessage = require('../../common/jobMessage.js').createJobMessage;
+
+
+// Spawns a job "node handler.js" and waits for the notification of its
+// completion using the Redis job status notification mechanism
+async function submitRemoteJob(ins, outs, context, cb) {
+    let fname='wftrace-' + context.hfId + '-' + context.appId + '.log';
+    log4js.configure({
+        appenders: { hftrace: { type: 'file', filename: fname } },
+        categories: { default: { appenders: ['hftrace'], level: 'error' } }
+    });
+
+    var logger = log4js.getLogger();
+
+    logger.level = 'debug';
+    console.log("Spawning process...");
+
+    //console.log(ins.map(i => i));
+
+    var input_dir = context.executor.input_dir,
+        work_dir = context.executor.work_dir,
+        output_dir = context.executor.output_dir;
+
+    let jobMessage = JSON.stringify(createJobMessage(ins, outs, context));
+
+    var cmd;
+
+    // if 'container' is present, run through Docker, mounting all directories if necessary
+    if (context.container) {
+        cmd = 'docker run ';
+        if (input_dir) cmd += ' -v ' + input_dir + ':/input_dir ';
+        if (work_dir) cmd += ' -v ' + work_dir + ':/work_dir ';
+        if (output_dir) cmd += ' -v ' + output_dir + ':/output_dir ';
+        cmd += container + ' node';
+    } else cmd = 'node'
+
+    try {
+        if (work_dir) { process.chdir(work_dir); }
+    } catch (error) {
+        throw error;
+    }
+
+    // "submit" job (start the handler process)
+    var proc = spawn(cmd, ['../../../hyperflow-job-executor/jobexec.js', context.taskId, context.redis_url], {shell: true});
+
+    proc.stderr.on('data', function(data) {
+        logger.debug(data.toString());
+        console.log(data.toString());
+    });
+
+    proc.stdout.on('data', function(data) {
+        logger.debug(data.toString());
+        console.log(data.toString());
+    });
+
+    proc.on('exit', function(code) {
+        logger.debug('Process exited with code', code);
+    });
+
+    // send message to the job (command to be executed)
+    try {
+        await context.sendMsgToJob(jobMessage, context.taskId);
+        logger.info('[' + context.taskId + '] job message sent');
+    } catch(err) {
+        console.error(err);
+        throw err;
+    }
+
+    // wait for the job to finish (timeout=0 means indefinite)
+    try {
+        var jobResult = await context.jobResult(0, context.taskId);
+        logger.info('[' + context.taskId + '] job result received:', jobResult);
+        console.log('Received job result:', jobResult);
+        cb(null, outs);
+    } catch(err) {
+        console.error(err);
+        throw err;
+    }
+}
+
+exports.submitRemoteJob = submitRemoteJob;
diff --git a/examples/Hashcat/generate.js b/examples/Hashcat/generate.js
new file mode 100644
index 0000000..0d424ea
--- /dev/null
+++ b/examples/Hashcat/generate.js
@@ -0,0 +1,35 @@
+const fs = require('fs');
+const crypto = require('crypto');
+
+function randomString(maxLength) {
+    const chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
+    let result = '';
+    for (let i = 0; i < maxLength; i++) {
+        result += chars[Math.floor(Math.random() * chars.length)];
+    }
+    return result;
+}
+
+function generateHashes() {
+    const algorithms = ['md5', 'sha1', 'sha256', 'sha512', 'sha3-256'];
+    const proportions = [35, 25, 15, 15, 10]; // Percentages for each algorithm
+
+    const totalHashes = 100;
+    const hashCounts = proportions.map(p => Math.floor((p / 100) * totalHashes));
+
+    const hashes = [];
+
+    for (let i = 0; i < algorithms.length; i++) {
+        for (let j = 0; j < hashCounts[i]; j++) {
+            const randomStr = randomString(5);
+            const hash = crypto.createHash(algorithms[i]).update(randomStr).digest('hex');
+            hashes.push({ hash, algorithm: algorithms[i] });
+        }
+    }
+
+    // Write all hashes to a single file
+    const allHashes = hashes.map(h => `${h.hash} ${h.algorithm}`).join('\n');
+    fs.writeFileSync('hashes.txt', allHashes, 'utf8');
+}
+
+generateHashes()
\ No newline at end of file
diff --git a/examples/Hashcat/handler.js b/examples/Hashcat/handler.js
new file mode 100644
index 0000000..e7bbb48
--- /dev/null
+++ b/examples/Hashcat/handler.js
@@ -0,0 +1,76 @@
+// Executor of 'jobs' using the Redis task status notification mechanism
+const redis = require('redis');
+const { spawn } = require('child_process');
+
+if (process.argv.length < 4) {
+  console.error("Usage: node handler.js <taskId> <redis_url>");
+  process.exit(1);
+}
+
+// 'taskId' is the name of the Redis list to use for the notification
+var taskId = process.argv[2],
+redis_url = process.argv[3];
+
+//console.log("taskId", taskId);
+//console.log("redis_url", redis_url);
+
+var rcl = redis.createClient(redis_url);
+
+// get job message from Redis 
+var getJobMessage = async function (timeout) {
+    return new Promise(function (resolve, reject) {
+        const jobMsgKey = taskId + "_msg";
+        rcl.brpop(jobMsgKey, timeout, function (err, reply) {
+            err ? reject(err): resolve(reply)
+        });
+    });
+}
+
+// send notification about job completion to Redis
+var notifyJobCompletion = async function () {
+    return new Promise(function (resolve, reject) {
+        rcl.rpush(taskId, "OK", function (err, reply) {
+            err ? reject(err): resolve(reply)
+        });
+    });
+}
+
+
+async function executeJob() {
+
+    // 1. get job message
+    try {
+        var jobMessage = await getJobMessage(10);
+    } catch (err) {
+        console.error(err);
+        throw err;
+    }
+    //console.log("Received job message:", jobMessage);
+
+    // 2. Execute job
+    var jm = JSON.parse(jobMessage[1]);
+
+    const cmd = spawn(jm["executable"], jm["args"]);
+
+    cmd.stdout.on('data', (data) => {
+      console.log(`stdout: ${data}`);
+    });
+
+    cmd.stderr.on('data', (data) => {
+      console.error(`stderr: ${data}`);
+    });
+
+    cmd.on('close', async(code) => {
+      console.log(`child process exited with code ${code}`);
+      // 3. Notify job completion
+      try {
+          await notifyJobCompletion();
+      } catch (err) {
+          console.error("Redis notification failed", err);
+          throw err;
+      }
+      process.exit(0);
+    });
+ }
+
+executeJob()
diff --git a/examples/Hashcat/hashcat.js b/examples/Hashcat/hashcat.js
new file mode 100644
index 0000000..33d9af2
--- /dev/null
+++ b/examples/Hashcat/hashcat.js
@@ -0,0 +1,44 @@
+const { exec } = require('child_process');
+
+function runHashcat(algorithm) {
+    const hashesFile = algorithm + '_hashes.txt'; // Hashes file     // Algorithm name (e.g., 'md5', 'sha1')
+    const crackedFile = 'cracked.txt';            // Output file for cracked hashes
+
+    // Map algorithms to Hashcat mode IDs
+    const algorithmModeMap = {
+        md5: 0,
+        sha1: 100,
+        sha256: 1400,
+        sha512: 1700,
+        'sha3-256': 17400
+    };
+
+    const hashcatMode = algorithmModeMap[algorithm];
+    if (hashcatMode === undefined) {
+        const error = new Error(`Unsupported algorithm: ${algorithm}`);
+        console.error(error.message);
+        return;
+    }
+
+    const mask = '?a?a?a?a?a';
+    console.log(`Running Hashcat for ${algorithm}...`);
+
+    // Construct the Hashcat command
+    const command = `hashcat --potfile-disable -m ${hashcatMode} -a 3 -o ${crackedFile} ${hashesFile} ${mask}`;
+
+    // Execute the Hashcat command
+    exec(command, (error, stdout, stderr) => {
+        if (error) {
+            console.error(`Hashcat Error: ${error.message}`);
+            return;
+        }
+        if (stderr) {
+            console.error(`Hashcat Stderr: ${stderr}`);
+        }
+
+        console.log(`Hashcat Output:\n${stdout}`);
+    });
+}
+
+const args = process.argv.slice(2);
+runHashcat(args[0]);
\ No newline at end of file
diff --git a/examples/Hashcat/hashcat.png b/examples/Hashcat/hashcat.png
new file mode 100644
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diff --git a/examples/Hashcat/package-lock.json b/examples/Hashcat/package-lock.json
new file mode 100644
index 0000000..91bc622
--- /dev/null
+++ b/examples/Hashcat/package-lock.json
@@ -0,0 +1,322 @@
+{
+  "name": "aws-posixfs-executor-test",
+  "version": "1.0.0",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "aws-posixfs-executor-test",
+      "version": "1.0.0",
+      "dependencies": {
+        "@stroncium/procfs": "^1.0.0",
+        "async": "^2.6.4",
+        "log4js": "^6.4.0",
+        "redis": "^3.1.1"
+      }
+    },
+    "node_modules/@stroncium/procfs": {
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+}
diff --git a/examples/Hashcat/package.json b/examples/Hashcat/package.json
new file mode 100644
index 0000000..bef6116
--- /dev/null
+++ b/examples/Hashcat/package.json
@@ -0,0 +1,14 @@
+{
+  "name": "aws-posixfs-executor-test",
+  "version": "1.0.0",
+  "main": "handler.js",
+  "scripts": {
+    "start": "node handler.js"
+  },
+  "dependencies": {
+    "@stroncium/procfs": "^1.0.0",
+    "async": "^2.6.4",
+    "log4js": "^6.4.0",
+    "redis": "^3.1.1"
+  }
+}
\ No newline at end of file
diff --git a/examples/Hashcat/summarize.js b/examples/Hashcat/summarize.js
new file mode 100644
index 0000000..2e2cacc
--- /dev/null
+++ b/examples/Hashcat/summarize.js
@@ -0,0 +1,17 @@
+const fs = require('fs');
+
+function summarizeResults() {
+    const crackedHashes = fs.readFileSync("cracked.txt", 'utf8').trim().split('\n');
+
+    console.log('Cracked hashes:', crackedHashes);
+
+    const summary = {
+        cracked: crackedHashes.length,
+        total: crackedHashes.length, // For simplicity, assume all hashes are cracked
+        details: crackedHashes
+    };
+
+    console.log('Summary:', summary);
+}
+
+summarizeResults()
\ No newline at end of file
diff --git a/examples/Hashcat/workflow.json b/examples/Hashcat/workflow.json
new file mode 100644
index 0000000..7a177eb
--- /dev/null
+++ b/examples/Hashcat/workflow.json
@@ -0,0 +1,140 @@
+{
+    "name": "PasswordAudit",
+    "processes": [
+      {
+        "name": "GenerateHashes",
+        "type": "dataflow",
+        "function": "submitRemoteJob",
+        "firingLimit": 1,
+        "config": {
+          "executor": {
+            "executable": "node",
+            "args": ["./generate.js"]
+          }
+        },
+        "ins": [],
+        "outs": [0]
+      },
+      {
+        "name": "FilterHashes",
+        "type": "dataflow",
+        "function": "submitRemoteJob",
+        "config": {
+          "executor": {
+            "executable": "node",
+            "args": ["./filter.js"]
+          }
+        },
+        "ins": [0],
+        "outs": [1]
+      },
+      {
+        "name": "RunHashcatMD5",
+        "type": "dataflow",
+        "function": "submitRemoteJob",
+        "config": {
+          "executor": {
+            "executable": "node",
+            "args": ["./hashcat.js", "md5"]
+          }
+        },
+        "ins": [1],
+        "outs": [2]
+      },
+      {
+        "name": "RunHashcatSHA1",
+        "type": "dataflow",
+        "function": "submitRemoteJob",
+        "config": {
+          "executor": {
+            "executable": "node",
+            "args": ["./hashcat.js", "sha1"]
+          }
+        },
+        "ins": [1],
+        "outs": [3]
+      },
+      {
+        "name": "RunHashcatSHA256",
+        "type": "dataflow",
+        "function": "submitRemoteJob",
+        "config": {
+          "executor": {
+            "executable": "node",
+            "args": ["./hashcat.js", "sha256"]
+          }
+        },
+        "ins": [1],
+        "outs": [4]
+      },
+      {
+        "name": "RunHashcatSHA512",
+        "type": "dataflow",
+        "function": "submitRemoteJob",
+        "config": {
+          "executor": {
+            "executable": "node",
+            "args": ["./hashcat.js", "sha512"]
+          }
+        },
+        "ins": [1],
+        "outs": [5]
+      },
+      {
+        "name": "RunHashcatSHA3-256",
+        "type": "dataflow",
+        "function": "submitRemoteJob",
+        "config": {
+          "executor": {
+            "executable": "node",
+            "args": ["./hashcat.js", "sha3-256"]
+          }
+        },
+        "ins": [1],
+        "outs": [6]
+      },
+      {
+        "name": "SummarizeResults",
+        "type": "dataflow",
+        "function": "submitRemoteJob",
+        "config": {
+          "executor": {
+            "executable": "node",
+            "args": ["./summarize.js"]
+          }
+        },
+        "ins": [2, 3, 4, 5, 6],
+        "outs": [7]
+      }
+    ],
+    "signals": [
+      
+      {
+        "name": 0
+      },
+      {
+        "name": 1
+      },
+      {
+        "name": 2
+      },
+      {
+        "name": 3
+      },
+      {
+        "name": 4
+      },
+      {
+        "name": 5
+      },
+      {
+        "name": 6
+      },
+      {
+        "name": 7
+      }
+    ],
+    "ins": [],
+    "outs": [7]
+  }
+  
\ No newline at end of file
diff --git a/examples/HashcatKubernetes/Dockerfile b/examples/HashcatKubernetes/Dockerfile
new file mode 100644
index 0000000..555213c
--- /dev/null
+++ b/examples/HashcatKubernetes/Dockerfile
@@ -0,0 +1,50 @@
+FROM node:22-bullseye
+
+# Set npm registry
+RUN npm config set registry https://registry.npmjs.org/
+
+# Install job-executor globally
+RUN npm install -g --loglevel verbose @marsel888/job-executor@1.4.8
+
+# Update package lists and install required dependencies
+RUN apt-get update && apt-get install -y \
+    bash \
+    coreutils \
+    pciutils \
+    build-essential \
+    git \
+    openssl \
+    libssl-dev \
+    libpcre3 \
+    libpcre3-dev \
+    zlib1g \
+    zlib1g-dev \
+    curl \
+    p7zip-full \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
+# Download and install pre-built Hashcat binaries
+RUN curl -LO https://hashcat.net/files/hashcat-2.00.7z \
+    && 7z x hashcat-2.00.7z -o/opt/ \
+    && mv /opt/hashcat-2.00 /opt/hashcat \
+    && chmod +x /opt/hashcat/hashcat-cli64.bin \
+    && ln -s /opt/hashcat/hashcat-cli64.bin /usr/bin/hashcat \
+    && chmod 755 /usr/bin/hashcat \
+    && rm hashcat-2.00.7z
+
+# Verify installation
+RUN echo $PATH
+RUN which hashcat || echo "hashcat not in PATH"
+
+# Create a wrapper script for hashcat
+RUN echo '#!/bin/bash' > /usr/local/bin/hashcat \
+    && echo 'exec /opt/hashcat/hashcat-cli64.bin "$@"' >> /usr/local/bin/hashcat \
+    && chmod +x /usr/local/bin/hashcat
+
+# Set up environment
+ENV PATH="/opt/hashcat:${PATH}"
+
+RUN wget -O /usr/local/bin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v1.2.5/dumb-init_1.2.5_x86_64
+RUN chmod +x /usr/local/bin/dumb-init
+ENTRYPOINT ["/usr/local/bin/dumb-init", "--"]
\ No newline at end of file
diff --git a/examples/HashcatKubernetes/DockerfileData b/examples/HashcatKubernetes/DockerfileData
new file mode 100644
index 0000000..7775888
--- /dev/null
+++ b/examples/HashcatKubernetes/DockerfileData
@@ -0,0 +1,4 @@
+FROM busybox
+
+RUN mkdir /data
+COPY * /data/
\ No newline at end of file
diff --git a/examples/HashcatKubernetes/filter.js b/examples/HashcatKubernetes/filter.js
new file mode 100755
index 0000000..24c2bfe
--- /dev/null
+++ b/examples/HashcatKubernetes/filter.js
@@ -0,0 +1,27 @@
+const fs = require('fs');
+
+function filterHashes() {
+    const hashes = fs.readFileSync("hashes.txt", 'utf8').trim().split('\n');
+
+    const groupedHashes = {
+        md5: [],
+        sha1: [],
+        sha256: [],
+        sha512: [],
+    };
+
+    hashes.forEach(line => {
+        const [hash, algorithm] = line.split(' ');
+        if (groupedHashes[algorithm]) {
+            groupedHashes[algorithm].push(hash);
+        }
+    });
+
+    // Write hashes to separate files by algorithm
+    Object.keys(groupedHashes).forEach(algorithm => {
+        const filename = `${algorithm}_hashes.txt`;
+        fs.writeFileSync(filename, groupedHashes[algorithm].join('\n'), 'utf8');
+    });
+}
+
+filterHashes()
\ No newline at end of file
diff --git a/examples/HashcatKubernetes/generate.js b/examples/HashcatKubernetes/generate.js
new file mode 100755
index 0000000..0d424ea
--- /dev/null
+++ b/examples/HashcatKubernetes/generate.js
@@ -0,0 +1,35 @@
+const fs = require('fs');
+const crypto = require('crypto');
+
+function randomString(maxLength) {
+    const chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
+    let result = '';
+    for (let i = 0; i < maxLength; i++) {
+        result += chars[Math.floor(Math.random() * chars.length)];
+    }
+    return result;
+}
+
+function generateHashes() {
+    const algorithms = ['md5', 'sha1', 'sha256', 'sha512', 'sha3-256'];
+    const proportions = [35, 25, 15, 15, 10]; // Percentages for each algorithm
+
+    const totalHashes = 100;
+    const hashCounts = proportions.map(p => Math.floor((p / 100) * totalHashes));
+
+    const hashes = [];
+
+    for (let i = 0; i < algorithms.length; i++) {
+        for (let j = 0; j < hashCounts[i]; j++) {
+            const randomStr = randomString(5);
+            const hash = crypto.createHash(algorithms[i]).update(randomStr).digest('hex');
+            hashes.push({ hash, algorithm: algorithms[i] });
+        }
+    }
+
+    // Write all hashes to a single file
+    const allHashes = hashes.map(h => `${h.hash} ${h.algorithm}`).join('\n');
+    fs.writeFileSync('hashes.txt', allHashes, 'utf8');
+}
+
+generateHashes()
\ No newline at end of file
diff --git a/examples/HashcatKubernetes/handler.js b/examples/HashcatKubernetes/handler.js
new file mode 100644
index 0000000..e7bbb48
--- /dev/null
+++ b/examples/HashcatKubernetes/handler.js
@@ -0,0 +1,76 @@
+// Executor of 'jobs' using the Redis task status notification mechanism
+const redis = require('redis');
+const { spawn } = require('child_process');
+
+if (process.argv.length < 4) {
+  console.error("Usage: node handler.js <taskId> <redis_url>");
+  process.exit(1);
+}
+
+// 'taskId' is the name of the Redis list to use for the notification
+var taskId = process.argv[2],
+redis_url = process.argv[3];
+
+//console.log("taskId", taskId);
+//console.log("redis_url", redis_url);
+
+var rcl = redis.createClient(redis_url);
+
+// get job message from Redis 
+var getJobMessage = async function (timeout) {
+    return new Promise(function (resolve, reject) {
+        const jobMsgKey = taskId + "_msg";
+        rcl.brpop(jobMsgKey, timeout, function (err, reply) {
+            err ? reject(err): resolve(reply)
+        });
+    });
+}
+
+// send notification about job completion to Redis
+var notifyJobCompletion = async function () {
+    return new Promise(function (resolve, reject) {
+        rcl.rpush(taskId, "OK", function (err, reply) {
+            err ? reject(err): resolve(reply)
+        });
+    });
+}
+
+
+async function executeJob() {
+
+    // 1. get job message
+    try {
+        var jobMessage = await getJobMessage(10);
+    } catch (err) {
+        console.error(err);
+        throw err;
+    }
+    //console.log("Received job message:", jobMessage);
+
+    // 2. Execute job
+    var jm = JSON.parse(jobMessage[1]);
+
+    const cmd = spawn(jm["executable"], jm["args"]);
+
+    cmd.stdout.on('data', (data) => {
+      console.log(`stdout: ${data}`);
+    });
+
+    cmd.stderr.on('data', (data) => {
+      console.error(`stderr: ${data}`);
+    });
+
+    cmd.on('close', async(code) => {
+      console.log(`child process exited with code ${code}`);
+      // 3. Notify job completion
+      try {
+          await notifyJobCompletion();
+      } catch (err) {
+          console.error("Redis notification failed", err);
+          throw err;
+      }
+      process.exit(0);
+    });
+ }
+
+executeJob()
diff --git a/examples/HashcatKubernetes/hashcat.js b/examples/HashcatKubernetes/hashcat.js
new file mode 100755
index 0000000..ab4cdfd
--- /dev/null
+++ b/examples/HashcatKubernetes/hashcat.js
@@ -0,0 +1,44 @@
+const { execSync } = require('child_process');
+
+function runHashcat(algorithm) {
+    const hashesFile = algorithm + '_hashes.txt'; // Hashes file     // Algorithm name (e.g., 'md5', 'sha1')
+    const crackedFile = 'cracked.txt';            // Output file for cracked hashes
+
+    // Map algorithms to Hashcat mode IDs
+    const algorithmModeMap = {
+        md5: 0,
+        sha1: 100,
+        sha256: 1400,
+        sha512: 1700
+    };
+
+    const hashcatMode = algorithmModeMap[algorithm];
+    if (hashcatMode === undefined) {
+        const error = new Error(`Unsupported algorithm: ${algorithm}`);
+        console.error(error.message);
+        return;
+    }
+
+    const mask = '?a?a?a?a?a';
+    console.log(`Running Hashcat for ${algorithm}...`);
+
+    // Construct the Hashcat command
+    const command = `hashcat --potfile-disable -m ${hashcatMode} -a 3 -o ${crackedFile} ${hashesFile} ${mask}`;
+
+    // Execute the Hashcat command
+    execSync(command, (error, stdout, stderr) => {
+
+        if (error) {
+            console.error(`Hashcat Error: ${error.message}`);
+            return;
+        }
+        if (stderr) {
+            console.error(`Hashcat Stderr: ${stderr}`);
+        }
+
+        console.log(`Hashcat Output:\n${stdout}`);
+    });
+}
+
+const args = process.argv.slice(2);
+runHashcat(args[0]);
\ No newline at end of file
diff --git a/examples/HashcatKubernetes/package-lock.json b/examples/HashcatKubernetes/package-lock.json
new file mode 100644
index 0000000..91bc622
--- /dev/null
+++ b/examples/HashcatKubernetes/package-lock.json
@@ -0,0 +1,322 @@
+{
+  "name": "aws-posixfs-executor-test",
+  "version": "1.0.0",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "aws-posixfs-executor-test",
+      "version": "1.0.0",
+      "dependencies": {
+        "@stroncium/procfs": "^1.0.0",
+        "async": "^2.6.4",
+        "log4js": "^6.4.0",
+        "redis": "^3.1.1"
+      }
+    },
+    "node_modules/@stroncium/procfs": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@stroncium/procfs/-/procfs-1.2.1.tgz",
+      "integrity": "sha512-X1Iui3FUNZP18EUvysTHxt+Avu2nlVzyf90YM8OYgP6SGzTzzX/0JgObfO1AQQDzuZtNNz29bVh8h5R97JrjxA==",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/async": {
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
+      "dependencies": {
+        "lodash": "^4.17.14"
+      }
+    },
+    "node_modules/date-format": {
+      "version": "4.0.14",
+      "resolved": "https://registry.npmjs.org/date-format/-/date-format-4.0.14.tgz",
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+      "engines": {
+        "node": ">=4.0"
+      }
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+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.0.tgz",
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+        "ms": "^2.1.3"
+      },
+      "engines": {
+        "node": ">=6.0"
+      },
+      "peerDependenciesMeta": {
+        "supports-color": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/denque": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/denque/-/denque-1.5.1.tgz",
+      "integrity": "sha512-XwE+iZ4D6ZUB7mfYRMb5wByE8L74HCn30FBN7sWnXksWc1LO1bPDl67pBR9o/kC4z/xSNAwkMYcGgqDV3BE3Hw==",
+      "engines": {
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+      "resolved": "https://registry.npmjs.org/flatted/-/flatted-3.3.2.tgz",
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+      "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-8.1.0.tgz",
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+        "jsonfile": "^4.0.0",
+        "universalify": "^0.1.0"
+      },
+      "engines": {
+        "node": ">=6 <7 || >=8"
+      }
+    },
+    "node_modules/graceful-fs": {
+      "version": "4.2.11",
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+      "optionalDependencies": {
+        "graceful-fs": "^4.1.6"
+      }
+    },
+    "node_modules/lodash": {
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+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
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+        "debug": "^4.3.4",
+        "flatted": "^3.2.7",
+        "rfdc": "^1.3.0",
+        "streamroller": "^3.1.5"
+      },
+      "engines": {
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+        "redis-commands": "^1.7.0",
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+        "url": "https://opencollective.com/node-redis"
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+      },
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+        "fs-extra": "^8.1.0"
+      },
+      "engines": {
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+        "node": ">= 4.0.0"
+      }
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+  },
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+      "resolved": "https://registry.npmjs.org/@stroncium/procfs/-/procfs-1.2.1.tgz",
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+      "requires": {
+        "lodash": "^4.17.14"
+      }
+    },
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+      "resolved": "https://registry.npmjs.org/date-format/-/date-format-4.0.14.tgz",
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+      "resolved": "https://registry.npmjs.org/denque/-/denque-1.5.1.tgz",
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+      "requires": {
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+        "jsonfile": "^4.0.0",
+        "universalify": "^0.1.0"
+      }
+    },
+    "graceful-fs": {
+      "version": "4.2.11",
+      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.11.tgz",
+      "integrity": "sha512-RbJ5/jmFcNNCcDV5o9eTnBLJ/HszWV0P73bc+Ff4nS/rJj+YaS6IGyiOL0VoBYX+l1Wrl3k63h/KrH+nhJ0XvQ=="
+    },
+    "jsonfile": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-4.0.0.tgz",
+      "integrity": "sha512-m6F1R3z8jjlf2imQHS2Qez5sjKWQzbuuhuJ/FKYFRZvPE3PuHcSMVZzfsLhGVOkfd20obL5SWEBew5ShlquNxg==",
+      "requires": {
+        "graceful-fs": "^4.1.6"
+      }
+    },
+    "lodash": {
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
+    },
+    "log4js": {
+      "version": "6.9.1",
+      "resolved": "https://registry.npmjs.org/log4js/-/log4js-6.9.1.tgz",
+      "integrity": "sha512-1somDdy9sChrr9/f4UlzhdaGfDR2c/SaD2a4T7qEkG4jTS57/B3qmnjLYePwQ8cqWnUHZI0iAKxMBpCZICiZ2g==",
+      "requires": {
+        "date-format": "^4.0.14",
+        "debug": "^4.3.4",
+        "flatted": "^3.2.7",
+        "rfdc": "^1.3.0",
+        "streamroller": "^3.1.5"
+      }
+    },
+    "ms": {
+      "version": "2.1.3",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+      "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="
+    },
+    "redis": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/redis/-/redis-3.1.2.tgz",
+      "integrity": "sha512-grn5KoZLr/qrRQVwoSkmzdbw6pwF+/rwODtrOr6vuBRiR/f3rjSTGupbF90Zpqm2oenix8Do6RV7pYEkGwlKkw==",
+      "requires": {
+        "denque": "^1.5.0",
+        "redis-commands": "^1.7.0",
+        "redis-errors": "^1.2.0",
+        "redis-parser": "^3.0.0"
+      }
+    },
+    "redis-commands": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/redis-commands/-/redis-commands-1.7.0.tgz",
+      "integrity": "sha512-nJWqw3bTFy21hX/CPKHth6sfhZbdiHP6bTawSgQBlKOVRG7EZkfHbbHwQJnrE4vsQf0CMNE+3gJ4Fmm16vdVlQ=="
+    },
+    "redis-errors": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/redis-errors/-/redis-errors-1.2.0.tgz",
+      "integrity": "sha512-1qny3OExCf0UvUV/5wpYKf2YwPcOqXzkwKKSmKHiE6ZMQs5heeE/c8eXK+PNllPvmjgAbfnsbpkGZWy8cBpn9w=="
+    },
+    "redis-parser": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/redis-parser/-/redis-parser-3.0.0.tgz",
+      "integrity": "sha512-DJnGAeenTdpMEH6uAJRK/uiyEIH9WVsUmoLwzudwGJUwZPp80PDBWPHXSAGNPwNvIXAbe7MSUB1zQFugFml66A==",
+      "requires": {
+        "redis-errors": "^1.0.0"
+      }
+    },
+    "rfdc": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/rfdc/-/rfdc-1.4.1.tgz",
+      "integrity": "sha512-q1b3N5QkRUWUl7iyylaaj3kOpIT0N2i9MqIEQXP73GVsN9cw3fdx8X63cEmWhJGi2PPCF23Ijp7ktmd39rawIA=="
+    },
+    "streamroller": {
+      "version": "3.1.5",
+      "resolved": "https://registry.npmjs.org/streamroller/-/streamroller-3.1.5.tgz",
+      "integrity": "sha512-KFxaM7XT+irxvdqSP1LGLgNWbYN7ay5owZ3r/8t77p+EtSUAfUgtl7be3xtqtOmGUl9K9YPO2ca8133RlTjvKw==",
+      "requires": {
+        "date-format": "^4.0.14",
+        "debug": "^4.3.4",
+        "fs-extra": "^8.1.0"
+      }
+    },
+    "universalify": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz",
+      "integrity": "sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg=="
+    }
+  }
+}
diff --git a/examples/HashcatKubernetes/package.json b/examples/HashcatKubernetes/package.json
new file mode 100644
index 0000000..bef6116
--- /dev/null
+++ b/examples/HashcatKubernetes/package.json
@@ -0,0 +1,14 @@
+{
+  "name": "aws-posixfs-executor-test",
+  "version": "1.0.0",
+  "main": "handler.js",
+  "scripts": {
+    "start": "node handler.js"
+  },
+  "dependencies": {
+    "@stroncium/procfs": "^1.0.0",
+    "async": "^2.6.4",
+    "log4js": "^6.4.0",
+    "redis": "^3.1.1"
+  }
+}
\ No newline at end of file
diff --git a/examples/HashcatKubernetes/summarize.js b/examples/HashcatKubernetes/summarize.js
new file mode 100755
index 0000000..2e2cacc
--- /dev/null
+++ b/examples/HashcatKubernetes/summarize.js
@@ -0,0 +1,17 @@
+const fs = require('fs');
+
+function summarizeResults() {
+    const crackedHashes = fs.readFileSync("cracked.txt", 'utf8').trim().split('\n');
+
+    console.log('Cracked hashes:', crackedHashes);
+
+    const summary = {
+        cracked: crackedHashes.length,
+        total: crackedHashes.length, // For simplicity, assume all hashes are cracked
+        details: crackedHashes
+    };
+
+    console.log('Summary:', summary);
+}
+
+summarizeResults()
\ No newline at end of file
diff --git a/examples/HashcatKubernetes/workflow.json b/examples/HashcatKubernetes/workflow.json
new file mode 100644
index 0000000..21344a6
--- /dev/null
+++ b/examples/HashcatKubernetes/workflow.json
@@ -0,0 +1,177 @@
+{
+  "name": "PasswordAudit",
+  "processes": [
+    {
+      "name": "GenerateHashes",
+      "type": "dataflow",
+      "function": "{{function}}",
+      "firingLimit": 1,
+      "config": {
+        "executor": {
+          "executable": "node",
+          "args": [
+            "./generate.js"
+          ]
+        }
+      },
+      "ins": [],
+      "outs": [
+        "hashes"
+      ]
+    },
+    {
+      "name": "FilterHashes",
+      "type": "dataflow",
+      "firingLimit": 1,
+      "function": "{{function}}",
+      "config": {
+        "executor": {
+          "executable": "node",
+          "args": [
+            "./filter.js"
+          ]
+        }
+      },
+      "ins": [
+        "hashes"
+      ],
+      "outs": [
+        "filteredHashes"
+      ]
+    },
+    {
+      "name": "RunHashcatMD5",
+      "type": "dataflow",
+      "firingLimit": 1,
+      "function": "{{function}}",
+      "config": {
+        "executor": {
+          "executable": "node",
+          "args": [
+            "./hashcat.js",
+            "md5"
+          ]
+        }
+      },
+      "ins": [
+        "filteredHashes"
+      ],
+      "outs": [
+        "crackedMD5"
+      ]
+    },
+    {
+      "name": "RunHashcatSHA1",
+      "type": "dataflow",
+      "firingLimit": 1,
+      "function": "{{function}}",
+      "config": {
+        "executor": {
+          "executable": "node",
+          "args": [
+            "./hashcat.js",
+            "sha1"
+          ]
+        }
+      },
+      "ins": [
+        "filteredHashes"
+      ],
+      "outs": [
+        "crackedSHA1"
+      ]
+    },
+    {
+      "name": "RunHashcatSHA256",
+      "type": "dataflow",
+      "firingLimit": 1,
+      "function": "{{function}}",
+      "config": {
+        "executor": {
+          "executable": "node",
+          "args": [
+            "./hashcat.js",
+            "sha256"
+          ]
+        }
+      },
+      "ins": [
+        "filteredHashes"
+      ],
+      "outs": [
+        "crackedSHA256"
+      ]
+    },
+    {
+      "name": "RunHashcatSHA512",
+      "type": "dataflow",
+      "firingLimit": 1,
+      "function": "{{function}}",
+      "config": {
+        "executor": {
+          "executable": "node",
+          "args": [
+            "./hashcat.js",
+            "sha512"
+          ]
+        }
+      },
+      "ins": [
+        "filteredHashes"
+      ],
+      "outs": [
+        "crackedSHA512"
+      ]
+    },
+    {
+      "name": "SummarizeResults",
+      "type": "dataflow",
+      "firingLimit": 1,
+      "function": "{{function}}",
+      "config": {
+        "executor": {
+          "executable": "node",
+          "args": [
+            "./summarize.js"
+          ]
+        }
+      },
+      "ins": [
+        "crackedMD5",
+        "crackedSHA1",
+        "crackedSHA256",
+        "crackedSHA512"
+      ],
+      "outs": [
+        "summary"
+      ]
+    }
+  ],
+  "signals": [
+    {
+      "name": "hashes"
+    },
+    {
+      "name": "filteredHashes"
+    },
+    {
+      "name": "crackedMD5"
+    },
+    {
+      "name": "crackedSHA1"
+    },
+    {
+      "name": "crackedSHA256"
+    },
+    {
+      "name": "crackedSHA512"
+    },
+    {
+      "name": "summary"
+    }
+  ],
+  "ins": [],
+  "outs": [
+    "summary"
+  ]
+}
diff --git a/examples/SpeedTest/Dockerfile b/examples/SpeedTest/Dockerfile
new file mode 100644
index 0000000..189517b
--- /dev/null
+++ b/examples/SpeedTest/Dockerfile
@@ -0,0 +1,34 @@
+FROM node:22-bullseye
+
+# Set npm registry
+RUN npm config set registry https://registry.npmjs.org/
+
+# Install job-executor globally
+RUN npm install -g --loglevel verbose @marsel888/job-executor@1.4.8
+
+# Update package lists and install required dependencies
+RUN apt-get update && apt-get install -y \
+    python3 \
+    python3-pip \
+    curl \
+    dumb-init \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install speedtest-cli via pip
+RUN pip3 install speedtest-cli
+
+# Verify installation
+RUN which speedtest-cli || echo "speedtest-cli not in PATH"
+
+# Create a wrapper script for speedtest
+RUN echo '#!/bin/bash' > /usr/local/bin/speedtest \
+    && echo 'exec speedtest-cli "$@"' >> /usr/local/bin/speedtest \
+    && chmod +x /usr/local/bin/speedtest
+
+# Download and configure dumb-init manually
+RUN wget -O /usr/local/bin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v1.2.5/dumb-init_1.2.5_x86_64
+RUN chmod +x /usr/local/bin/dumb-init
+
+# Set entrypoint
+ENTRYPOINT ["/usr/local/bin/dumb-init", "--"]
diff --git a/examples/SpeedTest/DockerfileData b/examples/SpeedTest/DockerfileData
new file mode 100644
index 0000000..7775888
--- /dev/null
+++ b/examples/SpeedTest/DockerfileData
@@ -0,0 +1,4 @@
+FROM busybox
+
+RUN mkdir /data
+COPY * /data/
\ No newline at end of file
diff --git a/examples/SpeedTest/handler.js b/examples/SpeedTest/handler.js
new file mode 100644
index 0000000..e7bbb48
--- /dev/null
+++ b/examples/SpeedTest/handler.js
@@ -0,0 +1,76 @@
+// Executor of 'jobs' using the Redis task status notification mechanism
+const redis = require('redis');
+const { spawn } = require('child_process');
+
+if (process.argv.length < 4) {
+  console.error("Usage: node handler.js <taskId> <redis_url>");
+  process.exit(1);
+}
+
+// 'taskId' is the name of the Redis list to use for the notification
+var taskId = process.argv[2],
+redis_url = process.argv[3];
+
+//console.log("taskId", taskId);
+//console.log("redis_url", redis_url);
+
+var rcl = redis.createClient(redis_url);
+
+// get job message from Redis 
+var getJobMessage = async function (timeout) {
+    return new Promise(function (resolve, reject) {
+        const jobMsgKey = taskId + "_msg";
+        rcl.brpop(jobMsgKey, timeout, function (err, reply) {
+            err ? reject(err): resolve(reply)
+        });
+    });
+}
+
+// send notification about job completion to Redis
+var notifyJobCompletion = async function () {
+    return new Promise(function (resolve, reject) {
+        rcl.rpush(taskId, "OK", function (err, reply) {
+            err ? reject(err): resolve(reply)
+        });
+    });
+}
+
+
+async function executeJob() {
+
+    // 1. get job message
+    try {
+        var jobMessage = await getJobMessage(10);
+    } catch (err) {
+        console.error(err);
+        throw err;
+    }
+    //console.log("Received job message:", jobMessage);
+
+    // 2. Execute job
+    var jm = JSON.parse(jobMessage[1]);
+
+    const cmd = spawn(jm["executable"], jm["args"]);
+
+    cmd.stdout.on('data', (data) => {
+      console.log(`stdout: ${data}`);
+    });
+
+    cmd.stderr.on('data', (data) => {
+      console.error(`stderr: ${data}`);
+    });
+
+    cmd.on('close', async(code) => {
+      console.log(`child process exited with code ${code}`);
+      // 3. Notify job completion
+      try {
+          await notifyJobCompletion();
+      } catch (err) {
+          console.error("Redis notification failed", err);
+          throw err;
+      }
+      process.exit(0);
+    });
+ }
+
+executeJob()
diff --git a/examples/SpeedTest/package.json b/examples/SpeedTest/package.json
new file mode 100644
index 0000000..bef6116
--- /dev/null
+++ b/examples/SpeedTest/package.json
@@ -0,0 +1,14 @@
+{
+  "name": "aws-posixfs-executor-test",
+  "version": "1.0.0",
+  "main": "handler.js",
+  "scripts": {
+    "start": "node handler.js"
+  },
+  "dependencies": {
+    "@stroncium/procfs": "^1.0.0",
+    "async": "^2.6.4",
+    "log4js": "^6.4.0",
+    "redis": "^3.1.1"
+  }
+}
\ No newline at end of file
diff --git a/examples/SpeedTest/speedtest.js b/examples/SpeedTest/speedtest.js
new file mode 100644
index 0000000..b81c3b4
--- /dev/null
+++ b/examples/SpeedTest/speedtest.js
@@ -0,0 +1,34 @@
+const { exec } = require('child_process');
+
+function runSpeedTestForDuration(durationSeconds = 10) {
+    console.log(`Running speed tests for ${durationSeconds} seconds...`);
+
+    const endTime = Date.now() + durationSeconds * 1000;
+
+    function runOnce() {
+        if (Date.now() >= endTime) {
+            console.log('Finished speed tests.');
+            return;
+        }
+
+        console.log(`Running speedtest-cli...`);
+        exec('speedtest-cli --bytes', (error, stdout, stderr) => {
+            if (error) {
+                console.error(`Speedtest error: ${error.message}`);
+                return;
+            }
+            if (stderr) {
+                console.error(`Speedtest stderr: ${stderr}`);
+            }
+
+            console.log(`Speedtest output:\n${stdout}`);
+
+            // Chain the next test
+            runOnce();
+        });
+    }
+
+    runOnce();
+}
+
+runSpeedTestForDuration(60);
\ No newline at end of file
diff --git a/examples/SpeedTest/workflow.json b/examples/SpeedTest/workflow.json
new file mode 100644
index 0000000..41285cd
--- /dev/null
+++ b/examples/SpeedTest/workflow.json
@@ -0,0 +1,28 @@
+{
+    "name": "SpeedTest",
+    "processes": [
+      {
+        "name": "SpeedTest",
+        "type": "dataflow",
+        "function": "{{function}}",
+        "firingLimit": 1,
+        "config": {
+          "executor": {
+            "executable": "node",
+            "args": ["./speedtest.js"]
+          }
+        },
+        "ins": [],
+        "outs": [0]
+      }
+    ],
+    "signals": [
+      
+      {
+        "name": 0
+      }
+    ],
+    "ins": [],
+    "outs": [0]
+  }
+  
\ No newline at end of file