Question

我想以编程方式而不是xml配置ignite log4j2配置。如何使用Java配置ignite log4j2配置？有人可以帮忙吗？

Answer 1

不幸的是，它内置的Ignite integration目前不支持纯编程方式的配置。

但是实际上，您可以使用slf4j支持的log4j2日志外观。在这种情况下，您将拥有某种完整的日志记录供电功能。为了实现这一点，您应该手动添加log4j2依赖项以及ignite-slf4j依赖项。同时，您需要log4j2 slf4j binding才能允许Ignite日志记录设施将呼叫转移到log4j2。

例如，如果您使用maven，则您的pom.xml应该包含：

<dependency>
    <groupId>org.apache.ignite</groupId>
    <artifactId>ignite-slf4j</artifactId>
    <version>${ignite.version}</version>
</dependency>
<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-api</artifactId>
    <version>2.13.3</version>
</dependency>
<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-core</artifactId>
    <version>2.13.3</version>
</dependency>
<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-slf4j-impl</artifactId>
    <version>2.13.3</version>
</dependency>

之后，您将可以按照官方的insеructions进行配置。例如，您可以尝试添加一个将org.apache.logging.log4j.core.config.ConfigurationFactory扩展到您的类路径的类。看起来可能像这样：

import java.net.URI;
import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.core.Filter;
import org.apache.logging.log4j.core.LoggerContext;
import org.apache.logging.log4j.core.appender.ConsoleAppender;
import org.apache.logging.log4j.core.config.Configuration;
import org.apache.logging.log4j.core.config.ConfigurationFactory;
import org.apache.logging.log4j.core.config.ConfigurationSource;
import org.apache.logging.log4j.core.config.Order;
import org.apache.logging.log4j.core.config.builder.api.AppenderComponentBuilder;
import org.apache.logging.log4j.core.config.builder.api.ConfigurationBuilder;
import org.apache.logging.log4j.core.config.builder.impl.BuiltConfiguration;
import org.apache.logging.log4j.core.config.plugins.Plugin;

@Plugin(name = "CustomConfigurationFactory", category = ConfigurationFactory.CATEGORY)
@Order(50)
public class CustomConfigurationFactory extends ConfigurationFactory {

    static Configuration createConfiguration(final String name, ConfigurationBuilder<BuiltConfiguration> builder) {
        builder.setConfigurationName(name);
        builder.setStatusLevel(Level.ERROR);
        builder.add(builder.newFilter("ThresholdFilter", Filter.Result.ACCEPT, Filter.Result.NEUTRAL).
            addAttribute("level", Level.DEBUG));
        AppenderComponentBuilder appenderBuilder = builder.newAppender("Stdout", "CONSOLE").
            addAttribute("target", ConsoleAppender.Target.SYSTEM_OUT);
        appenderBuilder.add(builder.newLayout("PatternLayout").
            addAttribute("pattern", "%d [%t] %-5level: %msg%n%throwable"));
        appenderBuilder.add(builder.newFilter("MarkerFilter", Filter.Result.DENY,
            Filter.Result.NEUTRAL).addAttribute("marker", "FLOW"));
        builder.add(appenderBuilder);
        builder.add(builder.newLogger("org.apache.logging.log4j", Level.DEBUG).
            add(builder.newAppenderRef("Stdout")).
            addAttribute("additivity", false));
        builder.add(builder.newRootLogger(Level.ERROR).add(builder.newAppenderRef("Stdout")));

        return builder.build();
    }

    @Override
    public Configuration getConfiguration(final LoggerContext loggerContext, final ConfigurationSource source) {
        return getConfiguration(loggerContext, source.toString(), null);
    }

    @Override
    public Configuration getConfiguration(final LoggerContext loggerContext, final String name, final URI configLocation) {
        ConfigurationBuilder<BuiltConfiguration> builder = newConfigurationBuilder();
        return createConfiguration(name, builder);
    }

    @Override
    protected String[] getSupportedTypes() {
        return new String[] {"*"};
    }
}

可以在那里进行日志记录自定义。

使用Java配置Ignite记录器和附加器

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