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HDDS-11826. Interactive mode for ozone shell #7515
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90 changes: 90 additions & 0 deletions
90
hadoop-ozone/tools/src/main/java/org/apache/hadoop/ozone/shell/REPL.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package org.apache.hadoop.ozone.shell; | ||
|
|
||
| import org.jline.console.SystemRegistry; | ||
| import org.jline.console.impl.SystemRegistryImpl; | ||
| import org.jline.reader.EndOfFileException; | ||
| import org.jline.reader.LineReader; | ||
| import org.jline.reader.LineReaderBuilder; | ||
| import org.jline.reader.MaskingCallback; | ||
| import org.jline.reader.Parser; | ||
| import org.jline.reader.UserInterruptException; | ||
| import org.jline.reader.impl.DefaultParser; | ||
| import org.jline.terminal.Terminal; | ||
| import org.jline.terminal.TerminalBuilder; | ||
| import org.jline.widget.TailTipWidgets; | ||
| import org.jline.widget.TailTipWidgets.TipType; | ||
| import picocli.CommandLine; | ||
| import picocli.shell.jline3.PicocliCommands; | ||
| import picocli.shell.jline3.PicocliCommands.PicocliCommandsFactory; | ||
|
|
||
| import java.nio.file.Path; | ||
| import java.nio.file.Paths; | ||
| import java.util.function.Supplier; | ||
|
|
||
| /** | ||
| * Interactive shell for Ozone commands. | ||
| * (REPL = Read-Eval-Print Loop) | ||
| */ | ||
| class REPL { | ||
|
|
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| REPL(Shell shell, CommandLine cmd, PicocliCommandsFactory factory) { | ||
| Parser parser = new DefaultParser(); | ||
| Supplier<Path> workDir = () -> Paths.get(System.getProperty("user.dir")); | ||
| TerminalBuilder terminalBuilder = TerminalBuilder.builder() | ||
| .dumb(true); | ||
| try (Terminal terminal = terminalBuilder.build()) { | ||
| factory.setTerminal(terminal); | ||
|
|
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| PicocliCommands picocliCommands = new PicocliCommands(cmd); | ||
| picocliCommands.name(shell.name()); | ||
| SystemRegistry registry = new SystemRegistryImpl(parser, terminal, workDir, null); | ||
| registry.setCommandRegistries(picocliCommands); | ||
| registry.register("help", picocliCommands); | ||
|
|
||
| LineReader reader = LineReaderBuilder.builder() | ||
| .terminal(terminal) | ||
| .completer(registry.completer()) | ||
| .parser(parser) | ||
| .variable(LineReader.LIST_MAX, 50) | ||
| .build(); | ||
|
|
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| TailTipWidgets widgets = new TailTipWidgets(reader, registry::commandDescription, 5, TipType.COMPLETER); | ||
| widgets.enable(); | ||
|
|
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| String prompt = shell.prompt() + "> "; | ||
|
|
||
| while (true) { | ||
| try { | ||
| registry.cleanUp(); | ||
| String line = reader.readLine(prompt, null, (MaskingCallback) null, null); | ||
| registry.execute(line); | ||
| } catch (UserInterruptException ignored) { | ||
| // ignore | ||
| } catch (EndOfFileException e) { | ||
| return; | ||
| } catch (Exception e) { | ||
| registry.trace(e); | ||
| } | ||
| } | ||
| } catch (Exception e) { | ||
| shell.printError(e); | ||
| } | ||
| } | ||
| } |
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Is this not required anymore?
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This is required only for processing
@Configannotations, creatingozone-default-generated.xmlat build time.hdds-tools/ozone-toolsdo not have any@Configcurrently, so it is safe to remove. I thought we wouldn't add CLI-only config properties, rather use CLI options for the same.There was a problem hiding this comment.
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Makes sense, thanks for the explanation!