как использовать потоки и тройник для регистрации ответа te lnet с сервера? - PullRequest
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как использовать потоки и тройник для регистрации ответа te lnet с сервера?

3 голосов
/ 04 мая 2020

контекст: есть различия между различными клиентами lnet и, конечно, отличие от этих клиентов, например, для библиотеки Apache. В этом случае, да, с использованием фактического клиента te lnet для MUD, где серверы могут быть довольно разборчивыми, так что API или сокеты просто не будут работать.

Как I go about:

Создать новый процесс для каждой переданной команды.

Создание потоков, которые читают выходные данные одной команды и записывают их во входные данные следующей команды.

сейчас нет выходных данных для: 

package mud;

import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import java.util.logging.Logger;

public class App {

    private final static Logger log = Logger.getLogger(App.class.getName());

    private void telnet() throws IOException {
        String s = "rainmaker.wunderground.com";

        List<String> telnetCommand = Arrays.asList("sh", "-c", "rainmaker.wunderground.com | tee -a -i telnet.log");
        String foo = "foo";

        ProcessBuilder pb = new ProcessBuilder(telnetCommand);
        Process p = pb.start();
    }

    public static void main(String[] args) throws IOException {
        new App().telnet();
    }

}

поэтому сначала мне нужно захватить результат (файл журнала): 

thufir@dur:~/NetBeansProjects/mud$ 
thufir@dur:~/NetBeansProjects/mud$ ll
total 96
drwxrwxr-x 7 thufir thufir  4096 May  3 21:00 ./
drwxrwxr-x 3 thufir thufir  4096 May  3 19:24 ../
drwxrwxr-x 5 thufir thufir  4096 May  3 20:50 build/
-rw-rw-r-- 1 thufir thufir  1034 May  3 19:20 build.gradle
drwxrwxr-x 8 thufir thufir  4096 May  3 21:00 .git/
-rw-rw-r-- 1 thufir thufir   154 May  3 19:20 .gitattributes
-rw-rw-r-- 1 thufir thufir   382 May  3 19:20 .gitignore
drwxrwxr-x 8 thufir thufir  4096 May  3 19:24 .gradle/
drwxrwxr-x 3 thufir thufir  4096 May  3 19:20 gradle/
-rwxrwxr-x 1 thufir thufir  5764 May  3 19:20 gradlew*
-rw-rw-r-- 1 thufir thufir  3056 May  3 19:20 gradlew.bat
-rw-rw-r-- 1 thufir thufir 35149 May  3 19:20 LICENSE
-rw-rw-r-- 1 thufir thufir    34 May  3 19:20 README.md
-rw-rw-r-- 1 thufir thufir   350 May  3 19:20 settings.gradle
drwxrwxr-x 4 thufir thufir  4096 May  3 19:44 src/
thufir@dur:~/NetBeansProjects/mud$ 
thufir@dur:~/NetBeansProjects/mud$ gradle clean run

BUILD SUCCESSFUL in 948ms
3 actionable tasks: 3 executed
thufir@dur:~/NetBeansProjects/mud$                                                                      
thufir@dur:~/NetBeansProjects/mud$ ll                                                                   
total 96
drwxrwxr-x 7 thufir thufir  4096 May  3 21:00 ./
drwxrwxr-x 3 thufir thufir  4096 May  3 19:24 ../
drwxrwxr-x 5 thufir thufir  4096 May  3 21:00 build/
-rw-rw-r-- 1 thufir thufir  1034 May  3 19:20 build.gradle
drwxrwxr-x 8 thufir thufir  4096 May  3 21:00 .git/
-rw-rw-r-- 1 thufir thufir   154 May  3 19:20 .gitattributes
-rw-rw-r-- 1 thufir thufir   382 May  3 19:20 .gitignore
drwxrwxr-x 8 thufir thufir  4096 May  3 19:24 .gradle/
drwxrwxr-x 3 thufir thufir  4096 May  3 19:20 gradle/
-rwxrwxr-x 1 thufir thufir  5764 May  3 19:20 gradlew*
-rw-rw-r-- 1 thufir thufir  3056 May  3 19:20 gradlew.bat
-rw-rw-r-- 1 thufir thufir 35149 May  3 19:20 LICENSE
-rw-rw-r-- 1 thufir thufir    34 May  3 19:20 README.md
-rw-rw-r-- 1 thufir thufir   350 May  3 19:20 settings.gradle
drwxrwxr-x 4 thufir thufir  4096 May  3 19:44 src/
-rw-rw-r-- 1 thufir thufir     0 May  3 21:00 telnet.log
thufir@dur:~/NetBeansProjects/mud$ 
thufir@dur:~/NetBeansProjects/mud$ cat telnet.log 
thufir@dur:~/NetBeansProjects/mud$

с консоли: 

thufir@dur:~$ 
thufir@dur:~$ telnet rainmaker.wunderground.com | tee -a -i telnet.log
Trying 35.160.169.47...
Connected to rainmaker.wunderground.com.
Escape character is '^]'.
------------------------------------------------------------------------------
*               Welcome to THE WEATHER UNDERGROUND telnet service!            *
------------------------------------------------------------------------------
*                                                                            *
*   National Weather Service information provided by Alden Electronics, Inc. *
*    and updated each minute as reports come in over our data feed.          *
*                                                                            *
*   **Note: If you cannot get past this opening screen, you must use a       *
*   different version of the "telnet" program--some of the ones for IBM      *
*   compatible PC's have a bug that prevents proper connection.              *
*                                                                            *
*           comments: jmasters@wunderground.com                              *
------------------------------------------------------------------------------

Press Return to continue:

Press Return for menu
or enter 3 letter forecast city code-- 

                 WEATHER UNDERGROUND MAIN MENU
                ******************************
                 1) U.S. forecasts and climate data
                 2) Canadian forecasts
                 3) Current weather observations
                 4) Ski conditions
                 5) Long-range forecasts
                 6) Latest earthquake reports
                 7) Severe weather
                 8) Hurricane advisories
                 9) Weather summary for the past month
                10) International data
                11) Marine forecasts and observations
                12) Ultraviolet light forecast
                 X) Exit program
                 C) Change scrolling to screen
                 H) Help and information for new users
                 ?) Answers to all your questions
                   Selection:x
Connection closed by foreign host.
thufir@dur:~$ 
thufir@dur:~$ cat telnet.log 
Trying 127.0.0.1...
Trying 35.160.169.47...
Connected to rainmaker.wunderground.com.
Escape character is '^]'.
------------------------------------------------------------------------------
*               Welcome to THE WEATHER UNDERGROUND telnet service!            *
------------------------------------------------------------------------------
*                                                                            *
*   National Weather Service information provided by Alden Electronics, Inc. *
*    and updated each minute as reports come in over our data feed.          *
*                                                                            *
*   **Note: If you cannot get past this opening screen, you must use a       *
*   different version of the "telnet" program--some of the ones for IBM      *
*   compatible PC's have a bug that prevents proper connection.              *
*                                                                            *
*           comments: jmasters@wunderground.com                              *
------------------------------------------------------------------------------

Press Return to continue:
Press Return for menu
or enter 3 letter forecast city code-- 
                 WEATHER UNDERGROUND MAIN MENU
                ******************************
                 1) U.S. forecasts and climate data
                 2) Canadian forecasts
                 3) Current weather observations
                 4) Ski conditions
                 5) Long-range forecasts
                 6) Latest earthquake reports
                 7) Severe weather
                 8) Hurricane advisories
                 9) Weather summary for the past month
                10) International data
                11) Marine forecasts and observations
                12) Ultraviolet light forecast
                 X) Exit program
                 C) Change scrolling to screen
                 H) Help and information for new users
                 ?) Answers to all your questions
                   Selection:thufir@dur:~$ 
thufir@dur:~$

возможно, каким-то образом создать задержка в ожидании ответа , а не , чем просто выполнение команды и выход?

...