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package com.eclipsesource.j2v8.tutorial;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import com.eclipsesource.v8.JavaCallback;
import com.eclipsesource.v8.NodeJS;
import com.eclipsesource.v8.V8;
import com.eclipsesource.v8.V8Array;
import com.eclipsesource.v8.V8Function;
import com.eclipsesource.v8.V8Object;
public class HttpServer {
private static V8 v8;
private static NodeJS nodeJS;
public static void main(String[] args) throws IOException {
nodeJS = NodeJS.createNodeJS();
v8 = nodeJS.getRuntime();
JSObject http = createHttpServer(nodeJS);
JSObject server = http.execute("createServer", f((V8Object receiver, V8Array parameters) -> {
JSObject response = jsObject((V8Object) parameters.get(1));
V8Object params = o("Content-Type", "text/plain");
response.execute("writeHead", 200, params);
response.execute("end", "Hello, from the JavaWorld!");
response.release();
params.release();
return null;
} ));
server.execute("listen", 8000);
System.out.println("Node HTTP server listening on port 8000.");
server.release();
http.release();
while (nodeJS.isRunning()) {
nodeJS.handleMessage();
}
nodeJS.release();
}
private static JSObject createHttpServer(NodeJS node) throws IOException {
V8Object exports = node.require(createTemporaryScriptFile("var http = require('http'); module.exports = {'http' : http};", "httpStartup"));
try {
return new JSObject((V8Object) exports.get("http"));
} finally {
exports.release();
}
}
static class JSObject {
private V8Object object;
public JSObject(V8Object object) {
this.object = object;
}
public JSObject execute(String function, Object... parameters) {
Object result = object.executeJSFunction(function, parameters);
if (result instanceof V8Object) {
return new JSObject((V8Object) result);
}
return null;
}
@Override
public String toString() {
return object.toString();
}
public void release() {
this.object.release();
this.object = null;
}
}
public static V8Function f(JavaCallback callback) {
return new V8Function(v8, callback);
}
public static V8Object o(String k, String v) {
return new V8Object(v8).add(k, v);
}
public static V8Object o(String k, int v) {
return new V8Object(v8).add(k, v);
}
public static JSObject jsObject(V8Object object) {
return new JSObject(object);
}
private static File createTemporaryScriptFile(final String script, final String name) throws IOException {
File tempFile = File.createTempFile(name, ".js");
PrintWriter writer = new PrintWriter(tempFile, "UTF-8");
try {
writer.print(script);
} finally {
writer.close();
}
return tempFile;
}
}
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