| | |
| | | import org.slf4j.Logger; |
| | | import org.slf4j.LoggerFactory; |
| | | |
| | | import ro.fortsoft.pf4j.ExtensionPoint; |
| | | |
| | | import com.gitblit.models.UserModel; |
| | | import com.gitblit.transport.ssh.CommandMetaData; |
| | | import com.gitblit.utils.StringUtils; |
| | | import com.gitblit.utils.cli.SubcommandHandler; |
| | | import com.google.common.base.Charsets; |
| | | import com.google.common.base.Joiner; |
| | | import com.google.common.base.Strings; |
| | | import com.google.common.collect.Maps; |
| | | |
| | | public abstract class DispatchCommand extends BaseCommand { |
| | | /** |
| | | * Parses an SSH command-line and dispatches the command to the appropriate |
| | | * BaseCommand instance. |
| | | * |
| | | * @since 1.5.0 |
| | | */ |
| | | public abstract class DispatchCommand extends BaseCommand implements ExtensionPoint { |
| | | |
| | | private Logger log = LoggerFactory.getLogger(getClass()); |
| | | |
| | |
| | | @Argument(index = 1, multiValued = true, metaVar = "ARG") |
| | | private List<String> args = new ArrayList<String>(); |
| | | |
| | | private Set<Class<? extends BaseCommand>> commands; |
| | | private final Set<Class<? extends BaseCommand>> commands; |
| | | private final Map<String, DispatchCommand> dispatchers; |
| | | private final Map<String, String> aliasToCommand; |
| | | private final Map<String, List<String>> commandToAliases; |
| | | private final List<BaseCommand> instantiated; |
| | | private Map<String, Class<? extends BaseCommand>> map; |
| | | private Map<String, BaseCommand> dispatchers; |
| | | |
| | | public DispatchCommand() { |
| | | protected DispatchCommand() { |
| | | commands = new HashSet<Class<? extends BaseCommand>>(); |
| | | dispatchers = Maps.newHashMap(); |
| | | aliasToCommand = Maps.newHashMap(); |
| | | commandToAliases = Maps.newHashMap(); |
| | | instantiated = new ArrayList<BaseCommand>(); |
| | | } |
| | | |
| | | public void registerDispatcher(UserModel user, Class<? extends DispatchCommand> cmd) { |
| | | if (!cmd.isAnnotationPresent(CommandMetaData.class)) { |
| | | throw new RuntimeException(MessageFormat.format("{0} must be annotated with {1}!", cmd.getName(), |
| | | CommandMetaData.class.getName())); |
| | | @Override |
| | | public void destroy() { |
| | | super.destroy(); |
| | | commands.clear(); |
| | | aliasToCommand.clear(); |
| | | commandToAliases.clear(); |
| | | map = null; |
| | | |
| | | for (BaseCommand command : instantiated) { |
| | | command.destroy(); |
| | | } |
| | | if (dispatchers == null) { |
| | | dispatchers = Maps.newHashMap(); |
| | | instantiated.clear(); |
| | | |
| | | for (DispatchCommand dispatcher : dispatchers.values()) { |
| | | dispatcher.destroy(); |
| | | } |
| | | dispatchers.clear(); |
| | | } |
| | | |
| | | /** |
| | | * Setup this dispatcher. Commands and nested dispatchers are normally |
| | | * registered within this method. |
| | | * |
| | | * @param user |
| | | * @since 1.5.0 |
| | | */ |
| | | protected abstract void setup(UserModel user); |
| | | |
| | | /** |
| | | * Register a command or a dispatcher by it's class. |
| | | * |
| | | * @param user |
| | | * @param clazz |
| | | */ |
| | | @SuppressWarnings("unchecked") |
| | | protected final void register(UserModel user, Class<? extends BaseCommand> clazz) { |
| | | if (DispatchCommand.class.isAssignableFrom(clazz)) { |
| | | registerDispatcher(user, (Class<? extends DispatchCommand>) clazz); |
| | | return; |
| | | } |
| | | |
| | | CommandMetaData meta = cmd.getAnnotation(CommandMetaData.class); |
| | | registerCommand(user, clazz); |
| | | } |
| | | |
| | | /** |
| | | * Register a command or a dispatcher instance. |
| | | * |
| | | * @param user |
| | | * @param cmd |
| | | */ |
| | | protected final void register(UserModel user, BaseCommand cmd) { |
| | | if (cmd instanceof DispatchCommand) { |
| | | registerDispatcher(user, (DispatchCommand) cmd); |
| | | return; |
| | | } |
| | | registerCommand(user, cmd); |
| | | } |
| | | |
| | | private void registerDispatcher(UserModel user, Class<? extends DispatchCommand> clazz) { |
| | | try { |
| | | DispatchCommand dispatcher = clazz.newInstance(); |
| | | registerDispatcher(user, dispatcher); |
| | | } catch (Exception e) { |
| | | log.error("failed to instantiate {}", clazz.getName()); |
| | | } |
| | | } |
| | | |
| | | private void registerDispatcher(UserModel user, DispatchCommand dispatcher) { |
| | | Class<? extends DispatchCommand> dispatcherClass = dispatcher.getClass(); |
| | | if (!dispatcherClass.isAnnotationPresent(CommandMetaData.class)) { |
| | | throw new RuntimeException(MessageFormat.format("{0} must be annotated with {1}!", dispatcher.getName(), |
| | | CommandMetaData.class.getName())); |
| | | } |
| | | |
| | | CommandMetaData meta = dispatcherClass.getAnnotation(CommandMetaData.class); |
| | | if (meta.admin() && !user.canAdmin()) { |
| | | log.debug(MessageFormat.format("excluding admin dispatch command {0} for {1}", meta.name(), user.username)); |
| | | log.debug(MessageFormat.format("excluding admin dispatcher {0} for {1}", |
| | | meta.name(), user.username)); |
| | | return; |
| | | } |
| | | |
| | | try { |
| | | DispatchCommand dispatcher = cmd.newInstance(); |
| | | dispatcher.registerCommands(user); |
| | | dispatcher.setup(user); |
| | | if (dispatcher.commands.isEmpty() && dispatcher.dispatchers.isEmpty()) { |
| | | log.debug(MessageFormat.format("excluding empty dispatcher {0} for {1}", |
| | | meta.name(), user.username)); |
| | | return; |
| | | } |
| | | |
| | | log.debug("registering {} dispatcher", meta.name()); |
| | | dispatchers.put(meta.name(), dispatcher); |
| | | for (String alias : meta.aliases()) { |
| | | aliasToCommand.put(alias, meta.name()); |
| | | if (!commandToAliases.containsKey(meta.name())) { |
| | | commandToAliases.put(meta.name(), new ArrayList<String>()); |
| | | } |
| | | commandToAliases.get(meta.name()).add(alias); |
| | | } |
| | | } catch (Exception e) { |
| | | log.error("failed to register {} dispatcher", meta.name()); |
| | | } |
| | | } |
| | | |
| | | protected void registerCommands(UserModel user) { |
| | | /** |
| | | * Registers a command as long as the user is permitted to execute it. |
| | | * |
| | | * @param user |
| | | * @param clazz |
| | | */ |
| | | private void registerCommand(UserModel user, Class<? extends BaseCommand> clazz) { |
| | | if (!clazz.isAnnotationPresent(CommandMetaData.class)) { |
| | | throw new RuntimeException(MessageFormat.format("{0} must be annotated with {1}!", clazz.getName(), |
| | | CommandMetaData.class.getName())); |
| | | } |
| | | CommandMetaData meta = clazz.getAnnotation(CommandMetaData.class); |
| | | if (meta.admin() && !user.canAdmin()) { |
| | | log.debug(MessageFormat.format("excluding admin command {0} for {1}", meta.name(), user.username)); |
| | | return; |
| | | } |
| | | commands.add(clazz); |
| | | } |
| | | |
| | | |
| | | /** |
| | | * Registers a command as long as the user is permitted to execute it. |
| | |
| | | * @param user |
| | | * @param cmd |
| | | */ |
| | | public void registerCommand(UserModel user, Class<? extends BaseCommand> cmd) { |
| | | if (!cmd.isAnnotationPresent(CommandMetaData.class)) { |
| | | private void registerCommand(UserModel user, BaseCommand cmd) { |
| | | if (!cmd.getClass().isAnnotationPresent(CommandMetaData.class)) { |
| | | throw new RuntimeException(MessageFormat.format("{0} must be annotated with {1}!", cmd.getName(), |
| | | CommandMetaData.class.getName())); |
| | | } |
| | | CommandMetaData meta = cmd.getAnnotation(CommandMetaData.class); |
| | | CommandMetaData meta = cmd.getClass().getAnnotation(CommandMetaData.class); |
| | | if (meta.admin() && !user.canAdmin()) { |
| | | log.debug(MessageFormat.format("excluding admin command {0} for {1}", meta.name(), user.username)); |
| | | return; |
| | | } |
| | | commands.add(cmd); |
| | | commands.add(cmd.getClass()); |
| | | instantiated.add(cmd); |
| | | } |
| | | |
| | | private Map<String, Class<? extends BaseCommand>> getMap() { |
| | |
| | | map = Maps.newHashMapWithExpectedSize(commands.size()); |
| | | for (Class<? extends BaseCommand> cmd : commands) { |
| | | CommandMetaData meta = cmd.getAnnotation(CommandMetaData.class); |
| | | map.put(meta.name(), cmd); |
| | | } |
| | | if (dispatchers != null) { |
| | | for (Map.Entry<String, BaseCommand> entry : dispatchers.entrySet()) { |
| | | map.put(entry.getKey(), entry.getValue().getClass()); |
| | | if (map.containsKey(meta.name()) || aliasToCommand.containsKey(meta.name())) { |
| | | log.warn("{} already contains the \"{}\" command!", getName(), meta.name()); |
| | | } else { |
| | | map.put(meta.name(), cmd); |
| | | } |
| | | for (String alias : meta.aliases()) { |
| | | if (map.containsKey(alias) || aliasToCommand.containsKey(alias)) { |
| | | log.warn("{} already contains the \"{}\" command!", getName(), alias); |
| | | } else { |
| | | aliasToCommand.put(alias, meta.name()); |
| | | if (!commandToAliases.containsKey(meta.name())) { |
| | | commandToAliases.put(meta.name(), new ArrayList<String>()); |
| | | } |
| | | commandToAliases.get(meta.name()).add(alias); |
| | | } |
| | | } |
| | | } |
| | | |
| | | for (Map.Entry<String, DispatchCommand> entry : dispatchers.entrySet()) { |
| | | map.put(entry.getKey(), entry.getValue().getClass()); |
| | | } |
| | | } |
| | | return map; |
| | |
| | | } |
| | | |
| | | private BaseCommand getCommand() throws UnloggedFailure { |
| | | if (dispatchers != null && dispatchers.containsKey(commandName)) { |
| | | return dispatchers.get(commandName); |
| | | Map<String, Class<? extends BaseCommand>> map = getMap(); |
| | | String name = commandName; |
| | | if (aliasToCommand.containsKey(commandName)) { |
| | | name = aliasToCommand.get(name); |
| | | } |
| | | final Class<? extends BaseCommand> c = getMap().get(commandName); |
| | | if (dispatchers.containsKey(name)) { |
| | | return dispatchers.get(name); |
| | | } |
| | | final Class<? extends BaseCommand> c = map.get(name); |
| | | if (c == null) { |
| | | String msg = (getName().isEmpty() ? "Gitblit" : getName()) + ": " + commandName + ": not found"; |
| | | throw new UnloggedFailure(1, msg); |
| | | } |
| | | |
| | | for (BaseCommand cmd : instantiated) { |
| | | // use an already instantiated command |
| | | if (cmd.getClass().equals(c)) { |
| | | return cmd; |
| | | } |
| | | } |
| | | |
| | | BaseCommand cmd = null; |
| | | try { |
| | | cmd = c.newInstance(); |
| | | instantiated.add(cmd); |
| | | } catch (Exception e) { |
| | | throw new UnloggedFailure(1, MessageFormat.format("Failed to instantiate {0} command", commandName)); |
| | | } |
| | | return cmd; |
| | | } |
| | | |
| | | private boolean hasVisibleCommands() { |
| | | boolean visible = false; |
| | | for (Class<? extends BaseCommand> cmd : commands) { |
| | | visible |= !cmd.getAnnotation(CommandMetaData.class).hidden(); |
| | | if (visible) { |
| | | return true; |
| | | } |
| | | } |
| | | for (DispatchCommand cmd : dispatchers.values()) { |
| | | visible |= cmd.hasVisibleCommands(); |
| | | if (visible) { |
| | | return true; |
| | | } |
| | | } |
| | | return false; |
| | | } |
| | | |
| | | public String getDescription() { |
| | | return getClass().getAnnotation(CommandMetaData.class).description(); |
| | | } |
| | | |
| | | @Override |
| | | public String usage() { |
| | | Set<String> commands = new TreeSet<String>(); |
| | | Set<String> dispatchers = new TreeSet<String>(); |
| | | Set<String> cmds = new TreeSet<String>(); |
| | | Set<String> dcs = new TreeSet<String>(); |
| | | Map<String, String> displayNames = Maps.newHashMap(); |
| | | int maxLength = -1; |
| | | Map<String, Class<? extends BaseCommand>> m = getMap(); |
| | | for (String name : m.keySet()) { |
| | | Class<? extends BaseCommand> c = m.get(name); |
| | | CommandMetaData meta = c.getAnnotation(CommandMetaData.class); |
| | | if (meta != null) { |
| | | if (meta.hidden()) { |
| | | continue; |
| | | } |
| | | if (meta.hidden()) { |
| | | continue; |
| | | } |
| | | |
| | | maxLength = Math.max(maxLength, name.length()); |
| | | String displayName = name + (meta.admin() ? "*" : ""); |
| | | if (commandToAliases.containsKey(meta.name())) { |
| | | displayName = name + (meta.admin() ? "*" : "")+ " (" + Joiner.on(',').join(commandToAliases.get(meta.name())) + ")"; |
| | | } |
| | | displayNames.put(name, displayName); |
| | | |
| | | maxLength = Math.max(maxLength, displayName.length()); |
| | | if (DispatchCommand.class.isAssignableFrom(c)) { |
| | | dispatchers.add(name); |
| | | DispatchCommand d = dispatchers.get(name); |
| | | if (d.hasVisibleCommands()) { |
| | | dcs.add(name); |
| | | } |
| | | } else { |
| | | commands.add(name); |
| | | cmds.add(name); |
| | | } |
| | | } |
| | | String format = "%-" + maxLength + "s %s"; |
| | | |
| | | final StringBuilder usage = new StringBuilder(); |
| | | if (!commands.isEmpty()) { |
| | | if (!StringUtils.isEmpty(getName())) { |
| | | String title = getName().toUpperCase() + ": " + getDescription(); |
| | | String b = com.gitblit.utils.StringUtils.leftPad("", title.length() + 2, '═'); |
| | | usage.append('\n'); |
| | | usage.append(b).append('\n'); |
| | | usage.append(' ').append(title).append('\n'); |
| | | usage.append(b).append('\n'); |
| | | usage.append('\n'); |
| | | } |
| | | |
| | | if (!cmds.isEmpty()) { |
| | | usage.append("Available commands"); |
| | | if (!getName().isEmpty()) { |
| | | usage.append(" of "); |
| | |
| | | } |
| | | usage.append(" are:\n"); |
| | | usage.append("\n"); |
| | | for (String name : commands) { |
| | | for (String name : cmds) { |
| | | final Class<? extends Command> c = m.get(name); |
| | | String displayName = displayNames.get(name); |
| | | CommandMetaData meta = c.getAnnotation(CommandMetaData.class); |
| | | usage.append(" "); |
| | | usage.append(String.format(format, name, Strings.nullToEmpty(meta.description()))); |
| | | usage.append(String.format(format, displayName, Strings.nullToEmpty(meta.description()))); |
| | | usage.append("\n"); |
| | | } |
| | | usage.append("\n"); |
| | | } |
| | | |
| | | if (!dispatchers.isEmpty()) { |
| | | if (!dcs.isEmpty()) { |
| | | usage.append("Available command dispatchers"); |
| | | if (!getName().isEmpty()) { |
| | | usage.append(" of "); |
| | |
| | | } |
| | | usage.append(" are:\n"); |
| | | usage.append("\n"); |
| | | for (String name : dispatchers) { |
| | | for (String name : dcs) { |
| | | final Class<? extends BaseCommand> c = m.get(name); |
| | | String displayName = displayNames.get(name); |
| | | CommandMetaData meta = c.getAnnotation(CommandMetaData.class); |
| | | usage.append(" "); |
| | | usage.append(String.format(format, name, Strings.nullToEmpty(meta.description()))); |
| | | usage.append(String.format(format, displayName, Strings.nullToEmpty(meta.description()))); |
| | | usage.append("\n"); |
| | | } |
| | | usage.append("\n"); |
| | |
| | | usage.append("COMMAND --help' for more information.\n"); |
| | | usage.append("\n"); |
| | | return usage.toString(); |
| | | } |
| | | |
| | | protected void provideStateTo(final BaseCommand cmd) { |
| | | if (cmd instanceof BaseCommand) { |
| | | cmd.setContext(ctx); |
| | | } |
| | | cmd.setInputStream(in); |
| | | cmd.setOutputStream(out); |
| | | cmd.setErrorStream(err); |
| | | cmd.setExitCallback(exit); |
| | | } |
| | | } |