GKE和Stackdriver：Java logback日志格式？

GKE和Stackdriver：Java logback日志格式？

这个答案包含了我需要的大多数信息：https :
//stackoverflow.com/a/39779646

我调整了答案以适合我的确切问题，并修复了一些似乎已过时的怪异输入和代码。

logback.xml：

<configuration>    <appender name="STDOUT" >        <enprer > <layout >     <pattern>%-4relative [%thread] %-5level %logger{35} - %msg</pattern> </layout>        </enprer>    </appender>    <root level="INFO">        <appender-ref ref="STDOUT"/>    </root></configuration>

GCPCloudLoggingJSONLayout：

import ch.qos.logback.classic.Level;import ch.qos.logback.classic.PatternLayout;import ch.qos.logback.classic.spi.ILoggingEvent;import com.fasterxml.jackson.core.JsonProcessingException;import com.fasterxml.jackson.databind.ObjectMapper;import java.util.Map;import static ch.qos.logback.classic.Level.DEBUG_INT;import static ch.qos.logback.classic.Level.ERROR_INT;import static ch.qos.logback.classic.Level.INFO_INT;import static ch.qos.logback.classic.Level.TRACE_INT;import static ch.qos.logback.classic.Level.WARN_INT;public class GCPCloudLoggingJSonLayout extends PatternLayout {    private static final ObjectMapper objectMapper = new ObjectMapper();    @Override    public String doLayout(ILoggingEvent event) {        String formattedMessage = super.doLayout(event);        return doLayoutInternal(formattedMessage, event);    }        private String doLayoutInternal(String formattedMessage, ILoggingEvent event) {        GCPCloudLoggingEvent gcpLogEvent = new GCPCloudLoggingEvent(formattedMessage, convertTimestampToGCPLogTimestamp(event.getTimeStamp()),     mapLevelToGCPLevel(event.getLevel()), event.getThreadName());        try { // Add a newline so that each JSON log entry is on its own line. // Note that it is also important that the JSON log entry does not span multiple lines. return objectMapper.writevalueAsString(gcpLogEvent) + "n";        } catch (JsonProcessingException e) { return "";        }    }    private static GCPCloudLoggingEvent.GCPCloudLoggingTimestamp convertTimestampToGCPLogTimestamp(        long millisSinceEpoch) {        int nanos = ((int) (millisSinceEpoch % 1000)) * 1_000_000; // strip out just the milliseconds and convert to nanoseconds        long seconds = millisSinceEpoch / 1000L; // remove the milliseconds        return new GCPCloudLoggingEvent.GCPCloudLoggingTimestamp(seconds, nanos);    }    private static String mapLevelToGCPLevel(Level level) {        switch (level.toInt()) { case TRACE_INT:     return "TRACE"; case DEBUG_INT:     return "DEBUG"; case INFO_INT:     return "INFO"; case WARN_INT:     return "WARN"; case ERROR_INT:     return "ERROR"; default:     return null;         }    }        public static class GCPCloudLoggingEvent {        private String message;        private GCPCloudLoggingTimestamp timestamp;        private String thread;        private String severity;        public GCPCloudLoggingEvent(String message, GCPCloudLoggingTimestamp timestamp, String severity, String thread) { super(); this.message = message; this.timestamp = timestamp; this.thread = thread; this.severity = severity;        }        public String getMessage() { return message;        }        public void setMessage(String message) { this.message = message;        }        public GCPCloudLoggingTimestamp getTimestamp() { return timestamp;        }        public void setTimestamp(GCPCloudLoggingTimestamp timestamp) { this.timestamp = timestamp;        }        public String getThread() { return thread;        }        public void setThread(String thread) { this.thread = thread;        }        public String getSeverity() { return severity;        }        public void setSeverity(String severity) { this.severity = severity;        }                public static class GCPCloudLoggingTimestamp { private long seconds; private int nanos; public GCPCloudLoggingTimestamp(long seconds, int nanos) {     super();     this.seconds = seconds;     this.nanos = nanos; } public long getSeconds() {     return seconds; } public void setSeconds(long seconds) {     this.seconds = seconds; } public int getNanos() {     return nanos; } public void setNanos(int nanos) {     this.nanos = nanos; }        }    }    @Override    public Map<String, String> getDefaultConverterMap() {        return PatternLayout.defaultConverterMap;    }}

就像我之前说的那样，该代码最初是从另一个答案获得的，我只是稍微清理了一下代码以使其更适合我的用例。