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[apache#5746] improve(CLI): Support table format output for Audit com…
…mand Support table format output for Audit command.
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99 changes: 99 additions & 0 deletions
99
clients/cli/src/main/java/org/apache/gravitino/cli/outputs/BaseOutputFormat.java
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| /* | ||
| * 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.gravitino.cli.outputs; | ||
|
|
||
| import com.google.common.base.Preconditions; | ||
| import java.io.BufferedOutputStream; | ||
| import java.io.IOException; | ||
| import java.io.OutputStream; | ||
| import java.io.PrintStream; | ||
| import java.io.UncheckedIOException; | ||
| import java.nio.charset.StandardCharsets; | ||
| import org.apache.gravitino.cli.CommandContext; | ||
|
|
||
| /** | ||
| * Abstract base implementation of {@link OutputFormat} interface providing common functionality for | ||
| * various output format implementations. This class handles basic output operations and provides | ||
| * configurable behavior for quiet mode, output limiting. | ||
| */ | ||
| public abstract class BaseOutputFormat<T> implements OutputFormat<T> { | ||
| protected int limit; | ||
| protected CommandContext context; | ||
|
|
||
| /** | ||
| * Creates a new {@link BaseOutputFormat} with specified configuration. | ||
| * | ||
| * @param context the command context, must not be null; | ||
| */ | ||
| public BaseOutputFormat(CommandContext context) { | ||
| Preconditions.checkNotNull(context, "CommandContext cannot be null"); | ||
| this.context = context; | ||
| this.limit = context.outputLimit(); | ||
| } | ||
|
|
||
| /** | ||
| * Outputs a message to the specified OutputStream. This method handles both system streams | ||
| * ({@code System.out}, {@code System.err}) and regular output streams differently: - For system | ||
| * streams: Preserves the stream open after writing - For other streams: Automatically closes the | ||
| * stream after writing | ||
| * | ||
| * @param message the message to output, must not be null | ||
| * @param os the output stream to write to, must not be null If this is {@code System.out} or | ||
| * {@code System.err}, the stream will not be closed | ||
| * @throws IllegalArgumentException if either message or os is null | ||
| * @throws UncheckedIOException if an I/O error occurs during writing | ||
| */ | ||
| public static void output(String message, OutputStream os) { | ||
| if (message == null || os == null) { | ||
| throw new IllegalArgumentException("Message and OutputStream cannot be null"); | ||
| } | ||
| boolean isSystemStream = (os == System.out || os == System.err); | ||
|
|
||
| try { | ||
| PrintStream printStream = | ||
| new PrintStream( | ||
| isSystemStream ? os : new BufferedOutputStream(os), | ||
| true, | ||
| StandardCharsets.UTF_8.name()); | ||
|
|
||
| try { | ||
| printStream.println(message); | ||
| printStream.flush(); | ||
| } finally { | ||
| if (!isSystemStream) { | ||
| printStream.close(); | ||
| } | ||
| } | ||
| } catch (IOException e) { | ||
| throw new UncheckedIOException("Failed to write message to output stream", e); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * {@inheritDoc} This implementation checks the quiet flag and handles null output gracefully. If | ||
| * quiet mode is enabled, no output is produced. | ||
| */ | ||
| @Override | ||
| public void output(T entity) { | ||
| String outputMessage = getOutput(entity); | ||
| String output = outputMessage == null ? "" : outputMessage; | ||
| output(output, System.out); | ||
| } | ||
| } |
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