JDBC Data Adapter [Java]

[vinayak singh]

Hi Dario,

I solved the previous error and the lightstreamer server almost started but while configuring the adapters of this project it went wrong. I am sharing the logs for you

22.May.23 17:34:57,058 < WARN> Adapters configuration not found in C:\Users\SinghVinayak\Lightstreamer-7.3.3\Lightstreamer\conf\..\adapters\classfile
22.May.23 17:34:57,075 < INFO> data_provider element without name attribute; using DEFAULT as the default name.
22.May.23 17:34:57,109 < INFO> Loading Metadata Adapter for Adapter Set WELCOME
22.May.23 17:34:57,109 < INFO> Loading Metadata Adapter for Adapter Set HELLOWORLD
22.May.23 17:34:57,799 < INFO> Finished loading Metadata Adapter for Adapter Set HELLOWORLD
22.May.23 17:34:57,799 < INFO> Loading Data Adapter HELLOWORLD.DEFAULT
22.May.23 17:34:57,848 < INFO> Finished loading Data Adapter HELLOWORLD.DEFAULT
22.May.23 17:34:58,213 < INFO> Finished loading Metadata Adapter for Adapter Set WELCOME
22.May.23 17:34:58,214 < INFO> Loading Data Adapter WELCOME.TELEMETRY
22.May.23 17:34:58,214 < INFO> Loading Data Adapter WELCOME.CHAT
22.May.23 17:34:58,214 < INFO> Loading Data Adapter WELCOME.STOCKS
22.May.23 17:34:58,214 < INFO> Loading Data Adapter WELCOME.ROOMBALL
22.May.23 17:34:58,216 < INFO> Finished loading Data Adapter WELCOME.TELEMETRY
22.May.23 17:34:58,217 < INFO> Finished loading Data Adapter WELCOME.ROOMBALL
22.May.23 17:34:58,223 < INFO> Finished loading Data Adapter WELCOME.CHAT
22.May.23 17:34:58,223 < INFO> Finished loading Data Adapter WELCOME.STOCKS
22.May.23 17:34:58,228 < INFO> Events pool size set by default at 8.
22.May.23 17:34:58,230 < INFO> Snapshot pool size set by default at 10.
22.May.23 17:34:58,234 <ERROR> Unexpected error in configuration: java.lang.RuntimeException: java.lang.NoClassDefFoundError: org/bitbucket/cowwoc/diffmatchpatch/DiffMatchPatch.
22.May.23 17:34:58,235 <ERROR> Error while loading the Adapters: Unexpected error in configuration.
22.May.23 17:34:58,235 <FATAL> Adapters initialization failed.


Process finished with exit code -1

[vinayak singh]

Hi Dario,
I solved the error that i listed first now in the logs there is a error for the server initialization. It says-

22.May.23 17:48:31,379 < WARN> Lightstreamer Server is running with a Demo license, which has a limit of 20 concurrent users and can be used for evaluation, development, and testing, but not for production. If you need to evaluate Lightstreamer Server without this user limit, or need any information on the other license types, please contact info@lightstreamer.com
22.May.23 17:48:31,485 < INFO> Number of detected cores: 8
22.May.23 17:48:31,486 < INFO> Lightstreamer Server starting in ENTERPRISE edition.
22.May.23 17:48:31,606 < INFO> Started RMI server for JNDI for JMX Connector on port 8888
22.May.23 17:48:31,614 < INFO> Binding of RMI Connector for JMX on port 8888 (communication on port 8888) started...
22.May.23 17:48:31,662 < INFO> Binding of RMI Connector for JMX on port 8888 (communication on port 8888) successful.
22.May.23 17:48:31,663 < INFO> Test of reachability of the JMX Connector at localhost:8888 started...
22.May.23 17:48:31,680 < INFO> Test of reachability of the JMX Connector at localhost:8888 successful.
22.May.23 17:48:31,737 < INFO> Binding of RMI Connector for Platform mbeans on port 8888 (communication on port 8888) started...
22.May.23 17:48:31,740 < INFO> Binding of RMI Connector for Platform mbeans on port 8888 (communication on port 8888) successful.
22.May.23 17:48:31,744 < INFO> SERVER pool size set by default at 1000.
22.May.23 17:48:31,745 < INFO> ACCEPT pool size set by default at 8.
22.May.23 17:48:31,771 < INFO> Queue limit checks for SERVER pool added to checks for ACCEPT pool.
22.May.23 17:48:31,813 < WARN> Adapters configuration not found in C:\Users\SinghVinayak\Downloads\Lightstreamer-7.3.3\Lightstreamer\conf\..\adapters\classfile
22.May.23 17:48:31,817 < INFO> data_provider element without name attribute; using DEFAULT as the default name.
22.May.23 17:48:31,834 < INFO> Loading Metadata Adapter for Adapter Set HELLOWORLD
22.May.23 17:48:31,834 < INFO> Loading Metadata Adapter for Adapter Set WELCOME
22.May.23 17:48:31,837 < INFO> Finished loading Metadata Adapter for Adapter Set HELLOWORLD
22.May.23 17:48:31,848 < INFO> Loading Data Adapter HELLOWORLD.DEFAULT
22.May.23 17:48:31,850 < INFO> Finished loading Data Adapter HELLOWORLD.DEFAULT
22.May.23 17:48:32,171 < INFO> Finished loading Metadata Adapter for Adapter Set WELCOME
22.May.23 17:48:32,171 < INFO> Loading Data Adapter WELCOME.TELEMETRY
22.May.23 17:48:32,171 < INFO> Loading Data Adapter WELCOME.CHAT
22.May.23 17:48:32,171 < INFO> Loading Data Adapter WELCOME.STOCKS
22.May.23 17:48:32,171 < INFO> Loading Data Adapter WELCOME.ROOMBALL
22.May.23 17:48:32,173 < INFO> Finished loading Data Adapter WELCOME.TELEMETRY
22.May.23 17:48:32,174 < INFO> Finished loading Data Adapter WELCOME.ROOMBALL
22.May.23 17:48:32,178 < INFO> Finished loading Data Adapter WELCOME.STOCKS
22.May.23 17:48:32,178 < INFO> Finished loading Data Adapter WELCOME.CHAT
22.May.23 17:48:32,183 < INFO> Events pool size set by default at 8.
22.May.23 17:48:32,186 < INFO> Snapshot pool size set by default at 10.
22.May.23 17:48:32,190 <ERROR> Unexpected error in configuration: java.lang.RuntimeException: java.lang.NoClassDefFoundError: org/bitbucket/cowwoc/diffmatchpatch/DiffMatchPatch.
22.May.23 17:48:32,191 <ERROR> Error while loading the Adapters: Unexpected error in configuration.
22.May.23 17:48:32,191 <FATAL> Adapters initialization failed.


Process finished with exit code -1

[DarioCrivelli]

The org/bitbucket/cowwoc/diffmatchpatch/DiffMatchPatch class is provided by the diff-match-patch-1.2.jar library in the Lightstreamer\lib\core folder.
Please check if you can see it.
If you can't, perhaps you have updated the Server binaries to version 7.3 in an installation package for version 7.2?

To resume the full list of libraries needed for the Server 7.3 startup, a procedural description seems better:

1. Download Server version 7.3 from the download page.
2. Go to the Lightstreamer/lib folder.
3. Consider all jar files in this folder and all its subfolders, except for the jars included in the log\bridge subfolder.