使用logback和logstash-logback编码器自定义日志级别显示

Question

我正在使用logstash-logback-encoder以json格式打印日志。

我的logback.xml看起来如下：-

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
        <encoder class="net.logstash.logback.encoder.LogstashEncoder">
            <includeContext>false</includeContext>
            <fieldNames>
                <timestamp>timestamp</timestamp>
                <version>[ignore]</version>
                <levelValue>[ignore]</levelValue>
            </fieldNames>
        </encoder>
    </appender>
    <appender name="stash"
        class="ch.qos.logback.core.rolling.RollingFileAppender">        
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>/tmp/SolrUpdater.%d{yyyy-MM-dd}.log
            </fileNamePattern>
            <maxHistory>7</maxHistory>
        </rollingPolicy>
        <encoder class="net.logstash.logback.encoder.LogstashEncoder">
            <includeContext>false</includeContext>
            <fieldNames>
                <timestamp>timestamp</timestamp>
                <version>[ignore]</version>
                <levelValue>[ignore]</levelValue>
            </fieldNames>
        </encoder>
    </appender>
    <root level="error">
        <appender-ref ref="CONSOLE" />
        <appender-ref ref="stash" />
    </root>
</configuration>

有人可以让我知道如何以小写形式显示所有level，例如error，而不是默认的ERROR和WARN显示为warning吗？

UPDATE-我按照扎克哈尔的建议创建了一个CustomLogLevelJsonProvider：-

package com.jabong.discovery.importer.solrUpdater.log;

public class CustomLogLevelJsonProvider extends LogLevelJsonProvider {
    final static String DEBUG = "debug";
    final static String ERROR = "error";
    final static String INFO = "info";
    final static String WARNING = "warning";

    @Override
    public void writeTo(JsonGenerator generator, ILoggingEvent event)
        throws IOException {
    JsonWritingUtils.writeStringField(generator, getFieldName(),
        getCustomLogLevel(event));
    }

    private String getCustomLogLevel(ILoggingEvent event) {
    if (event.getLevel() == Level.ALL) {
        return Level.ALL.toString();
    }
    if (event.getLevel() == Level.DEBUG) {
        return DEBUG;
    }
    if (event.getLevel() == Level.ERROR) {
        return ERROR;
    }
    if (event.getLevel() == Level.INFO) {
        return INFO;
    }
    if (event.getLevel() == Level.WARN) {
        return WARNING;
    }
    return "";
    }
}

更新logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
         <encoder class="com.jabong.discovery.importer.solrUpdater.log.CustomEncoder">
            <includeContext>false</includeContext>
            <fieldNames>
                <timestamp>timestamp</timestamp>
                <version>[ignore]</version>
                <levelValue>[ignore]</levelValue>
            </fieldNames>
        </encoder>
    </appender>
    <appender name="FILE"
        class="ch.qos.logback.core.rolling.RollingFileAppender">        
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>/tmp/SolrUpdater.%d{yyyy-MM-dd}.log
            </fileNamePattern>
            <maxHistory>7</maxHistory>
        </rollingPolicy>
        <encoder class="net.logstash.logback.encoder.LogstashEncoder">
            <includeContext>false</includeContext>
            <fieldNames>
                <timestamp>timestamp</timestamp>
                <version>[ignore]</version>
                <levelValue>[ignore]</levelValue>
            </fieldNames>
        </encoder>
    </appender>
    <root level="error">
        <appender-ref ref="CONSOLE" />
        <appender-ref ref="FILE" />
    </root>
</configuration>

现在我看到两个level：-

{"timestamp":"2015-12-26T23:41:08.818+05:30","message":"Partial Updater Initialization Failed ","logger_name":"com.jabong.discovery.importer.solrUpdater.partialupdate.PartialUpdater","thread_name":"main","level":"ERROR","stack_trace":"java.lang.Exception: Failed to Connect to SolrIndex Type:solr, Core:discovery, Host:localhost, Port:8888\n\tat com.jabong.discovery.importer.solrUpdater.partialupdate.PartialUpdater.initIndexUpdater(PartialUpdater.java:83) [classes/:na]\n\tat com.jabong.discovery.importer.solrUpdater.partialupdate.PartialUpdater.initialise(PartialUpdater.java:36) [classes/:na]\n\tat com.jabong.discovery.importer.solrUpdater.partialupdate.PartialUpdater.<init>(PartialUpdater.java:30) [classes/:na]\n\tat Updater.initialise(Updater.java:50) [classes/:na]\n\tat Updater.main(Updater.java:70) [classes/:na]\n","level":"error"}

Answer 1

我不知道是否可以通过XML进行配置。但是我只是试图覆盖您不喜欢的行为。您将需要实现两个新类。

1）

Answer 2

最好使用Logstash并在“级别”字段上应用小写过滤器。