Package org.apache.karaf.shell.api.action

Examples of org.apache.karaf.shell.api.action.Command

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            if (reg == null ) {
                throw new IllegalArgumentException("Class " + clazz.getName() + " is not annotated with @Service");
            }
        }
        if (Action.class.isAssignableFrom(clazz)) {
            final Command cmd = clazz.getAnnotation(Command.class);
            if (cmd == null) {
                throw new IllegalArgumentException("Command " + clazz.getName() + " is not annotated with @Command");
            }
            Object command = new ActionCommand(this, (Class<? extends Action>) clazz);
            registrations.register(command);
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    @SuppressWarnings({ "unchecked", "rawtypes" })
    public ArgumentCompleter(ActionCommand command, boolean scoped) {
        this.command = command;
        Class<?> actionClass = command.getActionClass();
        // Command name completer
        Command cmd = actionClass.getAnnotation(Command.class);
        String[] names = scoped || Session.SCOPE_GLOBAL.equals(cmd.scope()) ? new String[] { cmd.name() } : new String[] { cmd.name(), cmd.scope() + ":" + cmd.name() };
        commandCompleter = new StringsCompleter(names);
        // Build options completer
        for (Class<?> type = actionClass; type != null; type = type.getSuperclass()) {
            for (Field field : type.getDeclaredFields()) {
                Option option = field.getAnnotation(Option.class);
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public class DefaultActionPreparator {

    public boolean prepare(Action action, Session session, List<Object> params) throws Exception {

        Command command = action.getClass().getAnnotation(Command.class);
        Map<Option, Field> options = new HashMap<Option, Field>();
        Map<Argument, Field> arguments = new HashMap<Argument, Field>();
        List<Argument> orderedArguments = new ArrayList<Argument>();

        for (Class<?> type = action.getClass(); type != null; type = type.getSuperclass()) {
            for (Field field : type.getDeclaredFields()) {
                Option option = field.getAnnotation(Option.class);
                if (option != null) {
                    options.put(option, field);
                }

                Argument argument = field.getAnnotation(Argument.class);
                if (argument != null) {
                    argument = replaceDefaultArgument(field, argument);
                    arguments.put(argument, field);
                    int index = argument.index();
                    while (orderedArguments.size() <= index) {
                        orderedArguments.add(null);
                    }
                    if (orderedArguments.get(index) != null) {
                        throw new IllegalArgumentException("Duplicate argument index: " + index + " on Action " + action.getClass().getName());
                    }
                    orderedArguments.set(index, argument);
                }
            }
        }
        assertIndexesAreCorrect(action.getClass(), orderedArguments);

        String commandErrorSt = COLOR_RED + "Error executing command " + command.scope() + ":" + INTENSITY_BOLD + command.name() + INTENSITY_NORMAL + COLOR_DEFAULT + ": ";
        for (Iterator<Object> it = params.iterator(); it.hasNext(); ) {
            Object param = it.next();
            if (HelpOption.HELP.name().equals(param)) {
                int termWidth = session.getTerminal() != null ? session.getTerminal().getWidth() : 80;
                boolean globalScope = NameScoping.isGlobalScope(session, command.scope());
                printUsage(action, options, arguments, System.out, globalScope, termWidth);
                return false;
            }
        }
       
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            }
        }
    }

    public void printUsage(Action action, Map<Option, Field> options, Map<Argument, Field> arguments, PrintStream out, boolean globalScope, int termWidth) {
        Command command = action.getClass().getAnnotation(Command.class);
        if (command != null) {
            List<Argument> argumentsSet = new ArrayList<Argument>(arguments.keySet());
            Collections.sort(argumentsSet, new Comparator<Argument>() {
                public int compare(Argument o1, Argument o2) {
                    return Integer.valueOf(o1.index()).compareTo(Integer.valueOf(o2.index()));
                }
            });
            Set<Option> optionsSet = new HashSet<Option>(options.keySet());
            optionsSet.add(HelpOption.HELP);
            if (command != null && (command.description() != null || command.name() != null)) {
                out.println(INTENSITY_BOLD + "DESCRIPTION" + INTENSITY_NORMAL);
                out.print("        ");
                if (command.name() != null) {
                    if (globalScope) {
                        out.println(INTENSITY_BOLD + command.name() + INTENSITY_NORMAL);
                    } else {
                        out.println(command.scope() + ":" + INTENSITY_BOLD + command.name() + INTENSITY_NORMAL);
                    }
                    out.println();
                }
                out.print("\t");
                out.println(command.description());
                out.println();
            }
            StringBuffer syntax = new StringBuffer();
            if (command != null) {
                if (globalScope) {
                    syntax.append(command.name());
                } else {
                    syntax.append(String.format("%s:%s", command.scope(), command.name()));
                }
            }
            if (options.size() > 0) {
                syntax.append(" [options]");
            }
            if (arguments.size() > 0) {
                syntax.append(' ');
                for (Argument argument : argumentsSet) {
                    if (!argument.required()) {
                        syntax.append(String.format("[%s] ", argument.name()));
                    } else {
                        syntax.append(String.format("%s ", argument.name()));
                    }
                }
            }

            out.println(INTENSITY_BOLD + "SYNTAX" + INTENSITY_NORMAL);
            out.print("        ");
            out.println(syntax.toString());
            out.println();
            if (arguments.size() > 0) {
                out.println(INTENSITY_BOLD + "ARGUMENTS" + INTENSITY_NORMAL);
                for (Argument argument : argumentsSet) {
                    out.print("        ");
                    out.println(INTENSITY_BOLD + argument.name() + INTENSITY_NORMAL);
                    printFormatted("                ", argument.description(), termWidth, out, true);
                    if (!argument.required()) {
                        if (argument.valueToShowInHelp() != null && argument.valueToShowInHelp().length() != 0) {
                            if (Argument.DEFAULT_STRING.equals(argument.valueToShowInHelp())) {
                                Object o = getDefaultValue(action, arguments.get(argument));
                                String defaultValue = getDefaultValueString(o);
                                if (defaultValue != null) {
                                    printDefaultsTo(out, defaultValue);
                                }
                            } else {
                                printDefaultsTo(out, argument.valueToShowInHelp());
                            }
                        }
                    }
                }
                out.println();
            }
            if (options.size() > 0) {
                out.println(INTENSITY_BOLD + "OPTIONS" + INTENSITY_NORMAL);
                for (Option option : optionsSet) {
                    String opt = option.name();
                    for (String alias : option.aliases()) {
                        opt += ", " + alias;
                    }
                    out.print("        ");
                    out.println(INTENSITY_BOLD + opt + INTENSITY_NORMAL);
                    printFormatted("                ", option.description(), termWidth, out, true);
                    if (option.valueToShowInHelp() != null && option.valueToShowInHelp().length() != 0) {
                        if (Option.DEFAULT_STRING.equals(option.valueToShowInHelp())) {
                            Object o = getDefaultValue(action, options.get(option));
                            String defaultValue = getDefaultValueString(o);
                            if (defaultValue != null) {
                                printDefaultsTo(out, defaultValue);
                            }
                        } else {
                            printDefaultsTo(out, option.valueToShowInHelp());
                        }
                    }
                }
                out.println();
            }
            if (command.detailedDescription().length() > 0) {
                out.println(INTENSITY_BOLD + "DETAILS" + INTENSITY_NORMAL);
                String desc = loadDescription(action.getClass(), command.detailedDescription());
                printFormatted("        ", desc, termWidth, out, true);
            }
        }
    }
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*/
public class UserConfCommandHelpPrinter extends AbstractCommandHelpPrinter {

    @Override
    public void printHelp(Action action, PrintStream out, boolean includeHelpOption) {
        Command command = action.getClass().getAnnotation(Command.class);
        Set<Option> options = new HashSet<>();
        List<Argument> arguments = new ArrayList<Argument>();
        Map<Argument, Field> argFields = new HashMap<>();
        Map<Option, Field> optFields = new HashMap<>();
        for (Class<?> type = action.getClass(); type != null; type = type.getSuperclass()) {
            for (Field field : type.getDeclaredFields()) {
                Option option = field.getAnnotation(Option.class);
                if (option != null) {
                    options.add(option);
                }

                Argument argument = field.getAnnotation(Argument.class);
                if (argument != null) {
                    argument = replaceDefaultArgument(field, argument);
                    argFields.put(argument, field);
                    int index = argument.index();
                    while (arguments.size() <= index) {
                        arguments.add(null);
                    }
                    if (arguments.get(index) != null) {
                        throw new IllegalArgumentException("Duplicate argument index: " + index + " on Action " + action.getClass().getName());
                    }
                    arguments.set(index, argument);
                }
            }
        }
        if (includeHelpOption)
            options.add(HelpOption.HELP);

        out.println("h1. " + command.scope() + ":" + command.name());
        out.println();

        out.println("h2. Description");
        out.println(command.description());
        out.println();

        StringBuffer syntax = new StringBuffer();
        syntax.append(String.format("%s:%s", command.scope(), command.name()));
        if (options.size() > 0) {
            syntax.append(" \\[options\\]");
        }
        if (arguments.size() > 0) {
            syntax.append(' ');
            for (Argument argument : arguments) {
                syntax.append(String.format(argument.required() ? "%s " : "\\[%s\\] ", argument.name()));
            }
        }
        out.println("h2. Syntax");
        out.println(syntax.toString());
        out.println();

        if (arguments.size() > 0) {
            out.println("h2. Arguments");
            out.println("|| Name || Description ||");
            for (Argument argument : arguments) {
                String description = argument.description();
                if (!argument.required()) {
                    Object o = getDefaultValue(action, argFields.get(argument));
                    String defaultValue = getDefaultValueString(o);
                    if (defaultValue != null) {
                        description += " (defaults to " + o.toString() + ")";
                    }
                }
                out.println("| " + argument.name() + " | " + description + " |");
            }
            out.println();
        }
        if (options.size() > 0) {
            out.println("h2. Options");
            out.println("|| Name || Description ||");
            for (Option option : options) {
                String opt = option.name();
                String desc = option.description();
                for (String alias : option.aliases()) {
                    opt += ", " + alias;
                }
                Object o = getDefaultValue(action, optFields.get(option));
                String defaultValue = getDefaultValueString(o);
                if (defaultValue != null) {
                    desc += " (defaults to " + defaultValue + ")";
                }
                out.println("| " + opt + " | " + desc + " |");
            }
            out.println();
        }
        if (command.detailedDescription().length() > 0) {
            out.println("h2. Details");
            out.println(command.detailedDescription());
        }
        out.println();
    }
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*/
public class DocBookCommandHelpPrinter extends AbstractCommandHelpPrinter {

    @Override
    public void printHelp(Action action, PrintStream out, boolean includeHelpOption) {
        Command command = action.getClass().getAnnotation(Command.class);
        Set<Option> options = new HashSet<>();
        List<Argument> arguments = new ArrayList<Argument>();
        Map<Argument, Field> argFields = new HashMap<>();
        Map<Option, Field> optFields = new HashMap<>();
        for (Class<?> type = action.getClass(); type != null; type = type.getSuperclass()) {
            for (Field field : type.getDeclaredFields()) {
                Option option = field.getAnnotation(Option.class);
                if (option != null) {
                    options.add(option);
                }

                Argument argument = field.getAnnotation(Argument.class);
                if (argument != null) {
                    argument = replaceDefaultArgument(field, argument);
                    argFields.put(argument, field);
                    int index = argument.index();
                    while (arguments.size() <= index) {
                        arguments.add(null);
                    }
                    if (arguments.get(index) != null) {
                        throw new IllegalArgumentException("Duplicate argument index: " + index + " on Action " + action.getClass().getName());
                    }
                    arguments.set(index, argument);
                }
            }
        }
        if (includeHelpOption)
            options.add(HelpOption.HELP);

        out.println("<section>");
        out.println("  <title>" + command.scope() + ":" + command.name() + "</title>");
        out.println("  <section>");
        out.println("    <title>Description</title>");
        out.println("    <para>");
        out.println(command.description());
        out.println("    </para>");
        out.println("  </section>");

        StringBuffer syntax = new StringBuffer();
        syntax.append(String.format("%s:%s", command.scope(), command.name()));
        if (options.size() > 0) {
            syntax.append(" [options]");
        }
        if (arguments.size() > 0) {
            syntax.append(' ');
            for (Argument argument : arguments) {
                syntax.append(String.format(argument.required() ? "%s " : "[%s] ", argument.name()));
            }
        }
        out.println("  <section>");
        out.println("    <title>Syntax</title>");
        out.println("    <para>");
        out.println(syntax.toString());
        out.println("    </para>");
        out.println("  </section>");

        if (arguments.size() > 0) {
            out.println("  <section>");
            out.println("    <title>Arguments</title>");
            out.println("    <informaltable>");
            for (Argument argument : arguments) {
                out.println("    <tr>");
                out.println("      <td>" + argument.name() + "</td>");
                String description = argument.description();
                if (!argument.required()) {
                    if (argument.valueToShowInHelp() != null && argument.valueToShowInHelp().length() != 0) {
                        if (Argument.DEFAULT_STRING.equals(argument.valueToShowInHelp())) {
                            Object o = getDefaultValue(action, argFields.get(argument));
                            String defaultValue = getDefaultValueString(o);
                            if (defaultValue != null) {
                                description += " (defaults to " + o.toString() + ")";
                            }
                        }
                    }
                }
                out.println("      <td>" + description + "</td>");
                out.println("    </tr>");
            }

            out.println("    </informaltable>");
            out.println("  </section>");
        }

        if (options.size() > 0) {
            out.println("  <section>");
            out.println("    <title>Options</title>");
            out.println("    <informaltable>");

            for (Option option : options) {
                String opt = option.name();
                String description = option.description();
                for (String alias : option.aliases()) {
                    opt += ", " + alias;
                }
                Object o = getDefaultValue(action, optFields.get(option));
                String defaultValue = getDefaultValueString(o);
                if (defaultValue != null) {
                    description += " (defaults to " + o.toString() + ")";
                }
                out.println("    <tr>");
                out.println("      <td>" + opt + "</td>");
                out.println("      <td>" + description + "</td>");
                out.println("    </tr>");
            }

            out.println("    </informaltable>");
            out.println("  </section>");
        }

        if (command.detailedDescription().length() > 0) {
            out.println("  <section>");
            out.println("    <title>Details</title>");
            out.println("    <para>");
            out.println(command.detailedDescription());
            out.println("    </para>");
            out.println("  </section>");
        }
        out.println("</section>");
    }
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            String commandSuffix = FORMAT_DOCBX.equals(format) ? "xml" : "conf";
            for (Class<?> clazz : classes) {
                try {
                    Action action = (Action) clazz.newInstance();
                    Command cmd = clazz.getAnnotation(Command.class);

                    // skip the *-help command
                    if (cmd.scope().equals("*")) continue;

                    File output = new File(targetFolder, cmd.scope() + "-" + cmd.name() + "." + commandSuffix);
                    FileOutputStream outStream = new FileOutputStream(output);
                    PrintStream out = new PrintStream(outStream);
                    helpPrinter.printHelp(action, out, includeHelpOption);
                    out.close();
                    outStream.close();

                    Set<String> cmds = commands.get(cmd.scope());
                    if (cmds == null) {
                        cmds = new TreeSet<String>();
                        commands.put(cmd.scope(), cmds);
                    }
                    cmds.add(cmd.name());
                    getLog().info("Found command: " + cmd.scope() + ":" + cmd.name());
                } catch (Exception e) {
                    getLog().warn("Unable to write help for " + clazz.getName(), e);
                }
            }

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    }

    private static void listCommands() {
        System.out.println("Available commands:");
        for (Map.Entry<String, Class<?>> entry : COMMANDS.entrySet()) {
            Command ann = entry.getValue().getAnnotation(Command.class);
            System.out.printf("  %s - %s\n", entry.getKey(), ann.description());
        }

        System.out.println("Type 'command --help' for more help on the specified command.");
    }
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Related Classes of org.apache.karaf.shell.api.action.Command

  • org.apache.karaf.instance.main.Execute
  • org.apache.karaf.shell.impl.action.command.ArgumentCompleter
  • org.apache.karaf.shell.impl.action.command.DefaultActionPreparator
  • org.apache.karaf.shell.impl.action.command.ManagerImpl
  • org.apache.karaf.tooling.commands.DocBookCommandHelpPrinter
  • org.apache.karaf.tooling.commands.GenerateHelpMojo
  • org.apache.karaf.tooling.commands.UserConfCommandHelpPrinter
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