ExecuteScript ProcessLog

Question

在ExecuteScript处理器中使用ProcessorLog的最佳方法是什么？如果在处理过程中遇到错误，我计划在我的groovy ExecuteScript中添加一些日志记录。但是，尝试添加日志是不成功的。可能会忽略一些明显的东西。

代码段：

import org.apache.commons.io.IOUtils
import java.nio.charset.*
import com.google.gson.JsonObject
import com.google.gson.JsonParser
import java.time.Instant
import java.time.LocalDateTime
import java.time.ZoneId
import org.apache.nifi.logging.ProcessorLog;

def flowFile = session.get()
if(!flowFile) return
def logger = getLogger();

错误

016-04-07 17:13:51,146 ERROR [Timer-Driven Process Thread-6] o.a.nifi.processors.script.ExecuteScript
org.apache.nifi.processor.exception.ProcessException: javax.script.ScriptException: javax.script.ScriptException: groovy.lang.MissingMethodException: No signature of method: org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.getLogger() is applicable for argument types: () values: []
Possible solutions: getContext()
        at org.apache.nifi.processors.script.ExecuteScript.onTrigger(ExecuteScript.java:205) ~[nifi-scripting-processors-0.5.1.jar:0.5.1]
        at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1139) [nifi-framework-core-0.5.1.jar:0.5.1]
        at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:139) [nifi-framework-core-0.5.1.jar:0.5.1]
        at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:49) [nifi-framework-core-0.5.1.jar:0.5.1]
        at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:124) [nifi-framework-core-0.5.1.jar:0.5.1]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_05]
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [na:1.8.0_05]
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_05]
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [na:1.8.0_05]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_05]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_05]
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_05]
Caused by: javax.script.ScriptException: javax.script.ScriptException: groovy.lang.MissingMethodException: No signature of method: org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.getLogger() is applicable for argument types: () values: []

Answer 1

我相信ExecuteScript提供了三个对象：

• 会话
• 上下文
• 日志

所以我认为你应该能够做到：

log.error("my message")