Splunk AppDynamics

IBM java agen

Ahmedkhalil
Communicator

Dears,

i am checking my agent BytecodeTransfomrer and found all of entries are mentioning 

Matching runtime class : no class match found 

is this normal Logs or there is some issues in my installation 

Labels (1)
0 Karma
1 Solution

Peter_Holditch
Builder

That's perfectly normal.  Tha agent logs the loading of al the classes in your application.  "no class match found" in the ByteCode log simply indicates that no rule was found that requires that the class named in the log entry be instrumented.

ie this:

[AD Thread-BCI Transform Processor0] 11 Jul 2017 10:16:44,785 Matching class name org/springframework/boot/SpringApplication Matching class bytecode. : No class match found.

Indicates that no rule matched the org.springframework.boot.SpringApplication class

You can tell what HAS been instrumented from entries like:

[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,959 Matching class name ch/qos/logback/core/ConsoleAppender Matching class bytecode. : Class match found.
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,959 Matching method <init> (()V)
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,959 Matching method setTarget ((Ljava/lang/String;)V)
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,959 Matching method getTarget (()Ljava/lang/String;)
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,960 Matching method targetWarn ((Ljava/lang/String;)V)
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,960 Matching method start (()V)
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,960 Applying method interceptor logger.LogbackAppender at ch/qos/logback/core/ConsoleAppender.start (()V) id:21
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,961 Matching method getTargetStreamForWindows ((Ljava/io/OutputStream;)Ljava/io/OutputStream;)
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,961 Matching method isWithJansi (()Z)
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,961 Matching method setWithJansi ((Z)V)
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,964 Method start with signature ()V in class ch/qos/logback/core/ConsoleAppender has been successfully verified

which in this cae shows a loggin interceptor being applied.

This is briefly described here: https://docs.appdynamics.com/display/PRO43/Bytecode+Transformer+Logging

 

View solution in original post

0 Karma

Peter_Holditch
Builder

That's perfectly normal.  Tha agent logs the loading of al the classes in your application.  "no class match found" in the ByteCode log simply indicates that no rule was found that requires that the class named in the log entry be instrumented.

ie this:

[AD Thread-BCI Transform Processor0] 11 Jul 2017 10:16:44,785 Matching class name org/springframework/boot/SpringApplication Matching class bytecode. : No class match found.

Indicates that no rule matched the org.springframework.boot.SpringApplication class

You can tell what HAS been instrumented from entries like:

[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,959 Matching class name ch/qos/logback/core/ConsoleAppender Matching class bytecode. : Class match found.
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,959 Matching method <init> (()V)
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,959 Matching method setTarget ((Ljava/lang/String;)V)
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,959 Matching method getTarget (()Ljava/lang/String;)
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,960 Matching method targetWarn ((Ljava/lang/String;)V)
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,960 Matching method start (()V)
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,960 Applying method interceptor logger.LogbackAppender at ch/qos/logback/core/ConsoleAppender.start (()V) id:21
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,961 Matching method getTargetStreamForWindows ((Ljava/io/OutputStream;)Ljava/io/OutputStream;)
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,961 Matching method isWithJansi (()Z)
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,961 Matching method setWithJansi ((Z)V)
[AD Thread-BCI Transform Processor3] 11 Jul 2017 10:16:44,964 Method start with signature ()V in class ch/qos/logback/core/ConsoleAppender has been successfully verified

which in this cae shows a loggin interceptor being applied.

This is briefly described here: https://docs.appdynamics.com/display/PRO43/Bytecode+Transformer+Logging

 

0 Karma
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Automating Threat Operations and Threat Hunting with Recorded Future

    Automating Threat Operations and Threat Hunting with Recorded Future June 29, 2026 | Register   Is your ...

Keep the Learning Going with the New Best of .conf Hub

Hello Splunkers, With .conf26 getting closer, there’s already a lot of excitement building around this year’s ...

Splunk Community Badges!

  Hey everyone! Ready to earn some serious bragging rights in the community? Along with our existing badges ...