Examples with Command io.vertx.ext.shell.command.Command used on opensource projects

Example 1 with Command

use of io.vertx.ext.shell.command.Command in project vertx-examples by vert-x3.

the class HelloWorldCommand method start.

@Override
public void start() throws Exception {
    Command helloWorld = CommandBuilder.command("hello-world").processHandler(process -> {
        process.write("hello world\n");
        process.end();
    }).build(vertx);
    ShellService service = ShellService.create(vertx, new ShellServiceOptions().setTelnetOptions(new TelnetTermOptions().setHost("localhost").setPort(3000)));
    CommandRegistry.getShared(vertx).registerCommand(helloWorld);
    service.start(ar -> {
        if (!ar.succeeded()) {
            ar.cause().printStackTrace();
        }
    });
}

Example 2 with Command

use of io.vertx.ext.shell.command.Command in project vertx-examples by vert-x3.

the class StarwarsCommand method start.

@Override
public void start() throws Exception {
    Command starwars = CommandBuilder.command("starwars").processHandler(process -> {
        // Connect the client
        NetClient client = process.vertx().createNetClient();
        client.connect(23, "towel.blinkenlights.nl", ar -> {
            if (ar.succeeded()) {
                NetSocket socket = ar.result();
                // Ctrl-C closes the socket
                process.interruptHandler(v -> {
                    socket.close();
                });
                // 
                socket.handler(buff -> {
                    // Push the data to the Shell
                    process.write(buff.toString("UTF-8"));
                }).exceptionHandler(err -> {
                    err.printStackTrace();
                    socket.close();
                });
                // When socket closes, end the command
                socket.closeHandler(v -> {
                    process.end();
                });
            } else {
                process.write("Could not connect to remote Starwars server\n").end();
            }
        });
    }).build(vertx);
    ShellService service = ShellService.create(vertx, new ShellServiceOptions().setTelnetOptions(new TelnetTermOptions().setHost("localhost").setPort(3000)));
    CommandRegistry.getShared(vertx).registerCommand(starwars);
    service.start(ar -> {
        if (!ar.succeeded()) {
            ar.cause().printStackTrace();
        }
    });
}

Example 3 with Command

use of io.vertx.ext.shell.command.Command in project vertx-examples by vert-x3.

the class TopCommand method start.

@Override
public void start() throws Exception {
    Command starwars = CommandBuilder.command("top").processHandler(process -> {
        long id = process.vertx().setPeriodic(500, id_ -> {
            StringBuilder buf = new StringBuilder();
            Formatter formatter = new Formatter(buf);
            List<Thread> threads = new ArrayList<>(Thread.getAllStackTraces().keySet());
            for (int i = 1; i <= process.height(); i++) {
                // Change cursor position and erase line with ANSI escape code magic
                buf.append("\033[").append(i).append(";1H\033[K");
                // 
                String format = "  %1$-5s %2$-20s %3$-50s %4$s";
                if (i == 1) {
                    formatter.format(format, "ID", "STATE", "NAME", "GROUP");
                } else {
                    int index = i - 2;
                    if (index < threads.size()) {
                        Thread thread = threads.get(index);
                        formatter.format(format, thread.getId(), thread.getState().name(), thread.getName(), thread.getThreadGroup().getName());
                    }
                }
            }
            process.write(buf.toString());
        });
        // Terminate when user hits Ctrl-C
        process.interruptHandler(v -> {
            vertx.cancelTimer(id);
            process.end();
        });
    }).build(vertx);
    ShellService service = ShellService.create(vertx, new ShellServiceOptions().setTelnetOptions(new TelnetTermOptions().setHost("localhost").setPort(3000)));
    CommandRegistry.getShared(vertx).registerCommand(starwars);
    service.start(ar -> {
        if (!ar.succeeded()) {
            ar.cause().printStackTrace();
        }
    });
}

Example 4 with Command

use of io.vertx.ext.shell.command.Command in project vertx-examples by vert-x3.

the class EchoKeyboardCommand method start.

@Override
public void start() throws Exception {
    Command starwars = CommandBuilder.command("echokeyboard").processHandler(process -> {
        // Echo
        process.stdinHandler(keys -> {
            process.write(keys.replace('\r', '\n'));
        });
        // Terminate when user hits Ctrl-C
        process.interruptHandler(v -> {
            process.end();
        });
    }).build(vertx);
    ShellService service = ShellService.create(vertx, new ShellServiceOptions().setTelnetOptions(new TelnetTermOptions().setHost("localhost").setPort(3000)));
    CommandRegistry.getShared(vertx).registerCommand(starwars);
    service.start(ar -> {
        if (!ar.succeeded()) {
            ar.cause().printStackTrace();
        }
    });
}

Example 5 with Command

use of io.vertx.ext.shell.command.Command in project vertx-examples by vert-x3.

the class WgetCommand method start.

@Override
public void start() throws Exception {
    // Create the wget CLI
    CLI cli = CLI.create("wget").setSummary("Wget implemented with Vert.x HTTP client").addArgument(new Argument().setIndex(0).setArgName("http-url").setDescription("the HTTP uri to get"));
    // Create the command
    Command helloWorld = CommandBuilder.command(cli).processHandler(process -> {
        URL url;
        try {
            url = new URL(process.commandLine().getArgumentValue(0));
        } catch (MalformedURLException e) {
            process.write("Bad url\n").end();
            return;
        }
        HttpClient client = process.vertx().createHttpClient();
        process.write("Connecting to " + url + "\n");
        int port = url.getPort();
        if (port == -1) {
            port = 80;
        }
        HttpClientRequest req = client.get(port, url.getHost(), url.getPath());
        req.exceptionHandler(err -> {
            process.write("wget: error " + err.getMessage() + "\n");
            process.end();
        });
        req.handler(resp -> {
            process.write(resp.statusCode() + " " + resp.statusMessage() + "\n");
            String contentType = resp.getHeader("Content-Type");
            String contentLength = resp.getHeader("Content-Length");
            process.write("Length: " + (contentLength != null ? contentLength : "unspecified"));
            if (contentType != null) {
                process.write("[" + contentType + "]");
            }
            process.write("\n");
            process.end();
        });
        req.end();
    }).build(vertx);
    ShellService service = ShellService.create(vertx, new ShellServiceOptions().setTelnetOptions(new TelnetTermOptions().setHost("localhost").setPort(3000)));
    CommandRegistry.getShared(vertx).registerCommand(helloWorld);
    service.start(ar -> {
        if (!ar.succeeded()) {
            ar.cause().printStackTrace();
        }
    });
}