com.hazelcast.internal.diagnostics.DiagnosticsStdout Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2024, Hazelcast, Inc. All Rights Reserved.
*
* Licensed 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 com.hazelcast.internal.diagnostics;
import com.hazelcast.logging.ILogger;
import java.io.BufferedWriter;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.nio.charset.CharsetEncoder;
import java.nio.charset.StandardCharsets;
/**
* Represents the DiagnosticsStdout.
*
* Should only be called from the {@link Diagnostics}.
*/
final class DiagnosticsStdout implements DiagnosticsLog {
private final Diagnostics diagnostics;
private final ILogger logger;
private final DiagnosticsLogWriterImpl logWriter;
private final PrintWriter printWriter;
private boolean staticPluginsRendered;
DiagnosticsStdout(Diagnostics diagnostics) {
this.diagnostics = diagnostics;
this.logger = diagnostics.logger;
this.logWriter = new DiagnosticsLogWriterImpl(diagnostics.includeEpochTime, diagnostics.logger);
this.printWriter = newWriter();
logWriter.init(printWriter);
logger.info("Sending diagnostics logs to the stdout");
}
public void write(DiagnosticsPlugin plugin) {
try {
if (!staticPluginsRendered) {
renderStaticPlugins();
staticPluginsRendered = true;
}
renderPlugin(plugin);
printWriter.flush();
} catch (RuntimeException e) {
logger.warning("Failed to write stdout: ", e);
}
}
private void renderStaticPlugins() {
for (DiagnosticsPlugin plugin : diagnostics.staticTasks.get()) {
renderPlugin(plugin);
}
}
private void renderPlugin(DiagnosticsPlugin plugin) {
logWriter.resetSectionLevel();
plugin.run(logWriter);
}
private PrintWriter newWriter() {
CharsetEncoder encoder = StandardCharsets.UTF_8.newEncoder();
return new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out, encoder), Short.MAX_VALUE));
}
}