reflow_network 0.2.1

Network executor for Reflow — routes messages between actors, manages subgraphs, and emits runtime events.
Documentation 
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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Reflow Network Actor System Example</title>
    <style>
      body {
        font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
        line-height: 1.6;
        color: #333;
        max-width: 800px;
        margin: 0 auto;
        padding: 20px;
      }
      h1 {
        color: #2c3e50;
        border-bottom: 2px solid #3498db;
        padding-bottom: 10px;
      }
      .container {
        display: flex;
        flex-direction: column;
        gap: 20px;
      }
      .card {
        border: 1px solid #ddd;
        border-radius: 8px;
        padding: 15px;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
      }
      .card h2 {
        margin-top: 0;
        color: #3498db;
      }
      button {
        background-color: #3498db;
        color: white;
        border: none;
        padding: 10px 15px;
        border-radius: 4px;
        cursor: pointer;
        font-size: 14px;
        transition: background-color 0.3s;
      }
      button:hover {
        background-color: #2980b9;
      }
      pre {
        background-color: #f8f9fa;
        border-radius: 4px;
        padding: 15px;
        overflow: auto;
        font-family: "Courier New", Courier, monospace;
      }
      #output {
        height: 300px;
        overflow-y: auto;
        background-color: #f8f9fa;
        padding: 10px;
        border-radius: 4px;
        border: 1px solid #ddd;
      }
      .log-entry {
        margin-bottom: 5px;
        border-bottom: 1px solid #eee;
        padding-bottom: 5px;
      }
      .log-entry.info {
        color: #2c3e50;
      }
      .log-entry.success {
        color: #27ae60;
      }
      .log-entry.error {
        color: #e74c3c;
      }
    </style>
  </head>
  <body>
    <h1>Reflow Network Actor System Example</h1>

    <div class="container">
      <div class="card">
        <h2>Actor System Controls</h2>
        <div>
          <button id="initButton">Initialize Actor System</button>
          <button id="sendButton" disabled>Send Message to Actor</button>
          <button id="stateButton" disabled>Manipulate Actor State</button>
          <button id="shutdownButton" disabled>Shutdown Network</button>
        </div>
      </div>

      <div class="card">
        <h2>Console Output</h2>
        <div id="output"></div>
      </div>

      <div class="card">
        <h2>Message to Send</h2>
        <pre id="messageData">
{
  "text": "Hello, Actor System!",
  "count": 42,
  "timestamp": 0
}</pre
        >
      </div>
    </div>

    <script type="module">
      // We'll load the WASM module from the pkg directory
      import init, {
        Network,
        ActorLoad,
        MemoryState,
        WasmActorContext,
        JsWasmActor,
        init_panic_hook,
        ActorRunContext
      } from "../pkg/reflow_network.js";

      // Elements
      const initButton = document.getElementById("initButton");
      const sendButton = document.getElementById("sendButton");
      const stateButton = document.getElementById("stateButton");
      const shutdownButton = document.getElementById("shutdownButton");
      const output = document.getElementById("output");
      const messageData = document.getElementById("messageData");

      // Global variables
      let network = null;
      let actorState = null;

      // Custom console logger
      const log = (message, type = "info") => {
        const entry = document.createElement("div");
        entry.className = `log-entry ${type}`;
        entry.textContent = `[${new Date().toLocaleTimeString()}] ${message}`;
        output.appendChild(entry);
        output.scrollTop = output.scrollHeight;
        console.log(message);
      };

      // Define a simple actor
      class SimpleActor {
        constructor() {
          this.inports = ["input"];
          this.outports = ["output"];
          this.state = {};
          this.config = {};
        }

        /**
         *
         * @param {ActorRunContext} context
         */
        run(context) {
          console.log(
            "Actor received data:",
            JSON.stringify(context.input.input)
          );

          // Process the data
          const result = {
            message: `Processed: ${JSON.stringify(context.input.input)}`,
            timestamp: Date.now(),
          };

          // Send the result to the output port
          context.send({ output: result });
        }
      }

      // Initialize the WASM module
      init()
        .then(() => {
          log("WASM module loaded successfully", "success");
          initButton.disabled = false;
        })
        .catch((err) => {
          log(`Failed to load WASM module: ${err}`, "error");
        });

      // Initialize button click handler
      initButton.addEventListener("click", async () => {
        try {
          // Initialize panic hook for better error messages
          init_panic_hook();
          log("Panic hook initialized", "info");

          // Create a network
          network = new Network();
          log("Network created", "success");

          // Create an actor
          const actor = new SimpleActor();
          const jsActor = network.createActor("simpleActor", actor);
          log("Actor created and registered", "success");

          // Add a node to the network
          network.addNode("processor", "simpleActor");
          log("Node added to network", "info");

          // Create a state object
          actorState = new MemoryState();
          actorState.set("counter", 1);
          actorState.set("name", "Example Actor");
          log("Actor state initialized", "info");

          // Start the network
          await network.start();
          log("Network started", "success");

          // Listen for network events
          network.next((event) => {
            log(`Network event: ${JSON.stringify(event)}`, "info");
          });

          // Enable other buttons
          sendButton.disabled = false;
          stateButton.disabled = false;
          shutdownButton.disabled = false;
          initButton.disabled = true;
        } catch (error) {
          log(`Error initializing actor system: ${error}`, "error");
        }
      });

      // Send message button click handler
      sendButton.addEventListener("click", async () => {
        try {
          if (!network) {
            throw new Error("Network not initialized");
          }

          // Parse the message data
          const data = JSON.parse(messageData.textContent);
          data.timestamp = Date.now();

          // Update the displayed message
          messageData.textContent = JSON.stringify(data, null, 2);

          // Send the message
          log(`Sending message to actor: ${JSON.stringify(data)}`, "info");
          network.sendToActor("processor", "input", data);

          // Execute the actor directly and get the result
          const result = await network.executeActor("processor", {
            command: "calculate",
            value: 100,
            timestamp: Date.now(),
          });
          log(`Direct execution result: ${JSON.stringify(result)}`, "success");
        } catch (error) {
          log(`Error sending message: ${error}`, "error");
        }
      });

      // State manipulation button click handler
      stateButton.addEventListener("click", () => {
        try {
          if (!actorState) {
            throw new Error("Actor state not initialized");
          }

          // Increment counter
          const currentCounter = actorState.get("counter");
          actorState.set("counter", currentCounter + 1);

          // Log state information
          log(
            `State counter incremented to: ${actorState.get("counter")}`,
            "info"
          );
          log(`State has 'name': ${actorState.has("name")}`, "info");
          log(`State size: ${actorState.size()}`, "info");

          // Get all state
          const allState = actorState.getAll();
          log(`All state: ${JSON.stringify(allState)}`, "success");
        } catch (error) {
          log(`Error manipulating state: ${error}`, "error");
        }
      });

      // Shutdown button click handler
      shutdownButton.addEventListener("click", () => {
        try {
          if (!network) {
            throw new Error("Network not initialized");
          }

          // Get network information before shutdown
          log(`Actor names: ${network.getActorNames().join(", ")}`, "info");
          log(`Active actors: ${network.getActiveActors().join(", ")}`, "info");
          log(`Actor count: ${network.getActorCount()}`, "info");

          // Shutdown the network
          network.shutdown();
          log("Network shutdown complete", "success");

          // Reset buttons
          sendButton.disabled = true;
          stateButton.disabled = true;
          shutdownButton.disabled = true;
          initButton.disabled = false;

          // Clear references
          network = null;
          actorState = null;
        } catch (error) {
          log(`Error shutting down network: ${error}`, "error");
        }
      });
    </script>
  </body>
</html>