--- /dev/null
+/*
+ * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.controller.netconf.cli;
+
+import com.google.common.base.Optional;
+import com.google.common.base.Preconditions;
+import java.io.IOException;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import jline.console.UserInterruptException;
+import jline.console.completer.Completer;
+import jline.console.completer.StringsCompleter;
+import org.opendaylight.controller.netconf.cli.commands.Command;
+import org.opendaylight.controller.netconf.cli.commands.CommandConstants;
+import org.opendaylight.controller.netconf.cli.commands.CommandDispatcher;
+import org.opendaylight.controller.netconf.cli.commands.CommandInvocationException;
+import org.opendaylight.controller.netconf.cli.commands.input.Input;
+import org.opendaylight.controller.netconf.cli.commands.input.InputDefinition;
+import org.opendaylight.controller.netconf.cli.commands.output.Output;
+import org.opendaylight.controller.netconf.cli.commands.output.OutputDefinition;
+import org.opendaylight.controller.netconf.cli.io.ConsoleContext;
+import org.opendaylight.controller.netconf.cli.io.ConsoleIO;
+import org.opendaylight.controller.netconf.cli.reader.ReadingException;
+import org.opendaylight.controller.netconf.cli.writer.OutFormatter;
+import org.opendaylight.controller.netconf.cli.writer.WriteException;
+import org.opendaylight.controller.netconf.cli.writer.Writer;
+import org.opendaylight.controller.netconf.cli.writer.impl.NormalizedNodeWriter;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
+import org.opendaylight.yangtools.yang.model.api.UnknownSchemaNode;
+
+/**
+ * The top level cli state that dispatches command executions
+ */
+public class Cli implements Runnable {
+ private final CommandDispatcher commandRegistry;
+ private final CommandArgHandlerRegistry argumentHandlerRegistry;
+ private final SchemaContextRegistry schemaContextRegistry;
+ private final ConsoleIO consoleIO;
+
+ public Cli(final ConsoleIO consoleIO, final CommandDispatcher commandRegistry,
+ final CommandArgHandlerRegistry argumentHandlerRegistry, final SchemaContextRegistry schemaContextRegistry) {
+ this.consoleIO = consoleIO;
+ this.commandRegistry = commandRegistry;
+ this.argumentHandlerRegistry = argumentHandlerRegistry;
+ this.schemaContextRegistry = schemaContextRegistry;
+ }
+
+ @Override
+ public void run() {
+ try {
+ consoleIO.writeLn("Cli is up, available commands:");
+ final RootConsoleContext consoleContext = new RootConsoleContext(commandRegistry);
+ consoleIO.enterContext(consoleContext);
+ consoleIO.complete();
+ consoleIO.writeLn("");
+
+ while (true) {
+ final String commandName = consoleIO.read();
+ final Optional<Command> commandOpt = commandRegistry.getCommand(commandName);
+
+ if (commandOpt.isPresent() == false) {
+ continue;
+ }
+
+ final Command command = commandOpt.get();
+ try {
+ consoleIO.enterContext(command.getConsoleContext());
+ final Output response = command.invoke(handleInput(command.getInputDefinition()));
+ handleOutput(command, response);
+ } catch (final CommandInvocationException e) {
+ consoleIO.write(e.getMessage());
+ } catch (final UserInterruptException e) {
+ consoleIO.writeLn("Command " + command.getCommandId() + " was terminated.");
+ } finally {
+ consoleIO.leaveContext();
+ }
+
+ }
+ } catch (final IOException e) {
+ throw new RuntimeException("IO failure", e);
+ }
+ }
+
+ private void handleOutput(final Command command, final Output response) {
+ final OutputDefinition outputDefinition = command.getOutputDefinition();
+
+ final Writer<DataSchemaNode> outHandler = argumentHandlerRegistry.getGenericWriter();
+ if (outputDefinition.isEmpty()) {
+ handleEmptyOutput(command, response);
+ } else {
+ handleRegularOutput(response, outputDefinition, outHandler);
+ }
+ }
+
+ private void handleRegularOutput(final Output response, final OutputDefinition outputDefinition,
+ final Writer<DataSchemaNode> outHandler) {
+ final Map<DataSchemaNode, List<NormalizedNode<?, ?>>> unwrap = response.unwrap(outputDefinition);
+
+ for (final DataSchemaNode schemaNode : unwrap.keySet()) {
+ Preconditions.checkNotNull(schemaNode);
+
+ try {
+
+ // FIXME move custom writer to GenericWriter/Serializers ...
+ // this checks only first level
+ final Optional<Class<? extends Writer<DataSchemaNode>>> customReaderClassOpt = tryGetCustomHandler(schemaNode);
+
+ if (customReaderClassOpt.isPresent()) {
+ final Writer<DataSchemaNode> customReaderInstance = argumentHandlerRegistry
+ .getCustomWriter(customReaderClassOpt.get());
+ Preconditions.checkNotNull(customReaderInstance, "Unknown custom writer: %s",
+ customReaderClassOpt.get());
+ customReaderInstance.write(schemaNode, unwrap.get(schemaNode));
+ } else {
+ outHandler.write(schemaNode, unwrap.get(schemaNode));
+ }
+
+ } catch (final WriteException e) {
+ throw new IllegalStateException("Unable to write value for: " + schemaNode.getQName() + " from: "
+ + unwrap.get(schemaNode), e);
+ }
+ }
+ }
+
+ private void handleEmptyOutput(final Command command, final Output response) {
+ try {
+ new NormalizedNodeWriter(consoleIO, new OutFormatter()).write(null,
+ Collections.<NormalizedNode<?, ?>>singletonList(response.getOutput()));
+ } catch (final WriteException e) {
+ throw new IllegalStateException("Unable to write value for: " + response.getOutput().getNodeType()
+ + " from: " + command.getCommandId(), e);
+ }
+ }
+
+ private Input handleInput(final InputDefinition inputDefinition) {
+ List<NormalizedNode<?, ?>> allArgs = Collections.emptyList();
+ try {
+ if (!inputDefinition.isEmpty()) {
+ allArgs = argumentHandlerRegistry.getGenericReader(schemaContextRegistry.getLocalSchemaContext()).read(
+ inputDefinition.getInput());
+ }
+ } catch (final ReadingException e) {
+ throw new IllegalStateException("Unable to read value for: " + inputDefinition.getInput().getQName(), e);
+ }
+
+ return new Input(allArgs);
+ }
+
+ // TODO move tryGet to GenericWriter, GenericReader has the same code
+ private <T> Optional<Class<? extends T>> tryGetCustomHandler(final DataSchemaNode dataSchemaNode) {
+
+ for (final UnknownSchemaNode unknownSchemaNode : dataSchemaNode.getUnknownSchemaNodes()) {
+
+ if (isExtenstionForCustomHandler(unknownSchemaNode)) {
+ final String argumentHandlerClassName = unknownSchemaNode.getNodeParameter();
+ try {
+ final Class<?> argumentClass = Class.forName(argumentHandlerClassName);
+ // TODO add check before cast
+ return Optional.<Class<? extends T>> of((Class<? extends T>) argumentClass);
+ } catch (final ClassNotFoundException e) {
+ throw new IllegalArgumentException("Unknown custom reader class " + argumentHandlerClassName
+ + " for: " + dataSchemaNode.getQName());
+ }
+ }
+ }
+
+ return Optional.absent();
+ }
+
+ private boolean isExtenstionForCustomHandler(final UnknownSchemaNode unknownSchemaNode) {
+ final QName qName = unknownSchemaNode.getExtensionDefinition().getQName();
+ return qName.equals(CommandConstants.ARG_HANDLER_EXT_QNAME);
+ }
+
+ private static final class RootConsoleContext implements ConsoleContext {
+
+ private final Completer completer;
+
+ public RootConsoleContext(final CommandDispatcher commandRegistry) {
+ completer = new CommandCompleter(commandRegistry);
+ }
+
+ @Override
+ public Completer getCompleter() {
+ return completer;
+ }
+
+ @Override
+ public Optional<String> getPrompt() {
+ return Optional.absent();
+ }
+
+ private class CommandCompleter extends StringsCompleter {
+
+ private final CommandDispatcher commandRegistry;
+
+ public CommandCompleter(final CommandDispatcher commandRegistry) {
+ this.commandRegistry = commandRegistry;
+ }
+
+ @Override
+ public int complete(final String buffer, final int cursor, final List<CharSequence> candidates) {
+ getStrings().clear();
+ getStrings().addAll(commandRegistry.getCommandIds());
+ return super.complete(buffer, cursor, candidates);
+ }
+ }
+ }
+
+}
Code Review / controller.git / blobdiff