Hi All,
Cassandra server no longer embedded into WSO2 MB 3.0.0. Therefore I have
removed following features from the product as well as removed cassandra
profile too.
org.wso2.carbon.cassandra.server
org.wso2.carbon.cassandra.common
The only remain cassandra related feature is
org.wso2.carbon.cassandra.datareader. We use this feature to connect with
external cassandra server by enabling cassandra datasource in
master-datasources.xml. Communication happen with cassandra via
cql-driver_1.0.8.wso2v1.
We have added following <provider> under <providers> in
master-datasources.xml
<provider>org.wso2.carbon.cassandra.datareader.datasource.CassandraDataSourceReader</provider>
Here is datasource we used to connect to external cassandra server
<datasource>
<name>WSO2_CASSANDRA_DB</name>
<description>The datasource used for cassandra</description>
<jndiConfig>
<name>CassandraRepo</name>
</jndiConfig>
<definition type="CASSANDRA">
<configuration>
<async>false</async>
<clusterName>TestCluster</clusterName>
<compression>SNAPPY</compression>
<concurrency>100</concurrency>
<username>admin</username>
<password encrypted="true">admin</password>
<port>9042</port>
<maxConnections>100</maxConnections>
<hosts>
<host>127.0.0.1</host>
</hosts>
<loadBalancePolicy>
<exclusionThreshold>2.5</exclusionThreshold>
<latencyAware>true</latencyAware>
<minMeasure>100</minMeasure>
<policyName>RoundRobinPolicy</policyName>
<retryPeriod>10</retryPeriod>
<scale>2</scale>
</loadBalancePolicy>
<poolOptions>
<coreConnectionsForLocal>10</coreConnectionsForLocal>
<coreConnectionsForRemote>10</coreConnectionsForRemote>
<maxConnectionsForLocal>10</maxConnectionsForLocal>
<maxConnectionsForRemote>10</maxConnectionsForRemote>
<maxSimultaneousRequestsForLocal>10</maxSimultaneousRequestsForLocal>
<maxSimultaneousRequestsForRemote>10</maxSimultaneousRequestsForRemote>
<minSimultaneousRequestsForLocal>10</minSimultaneousRequestsForLocal>
<minSimultaneousRequestsForRemote>10</minSimultaneousRequestsForRemote>
</poolOptions>
<reconnectPolicy>
<baseDelayMs>100</baseDelayMs>
<policyName>ConstantReconnectionPolicy</policyName>
</reconnectPolicy>
<socketOptions>
<connectTimeoutMillis>200</connectTimeoutMillis>
<keepAlive>true</keepAlive>
<readTimeoutMillis>200</readTimeoutMillis>
<tcpNoDelay>true</tcpNoDelay>
</socketOptions>
</configuration>
</definition>
</datasource>
State of org.wso2.carbon.cassandra.datareader as below.
136 ACTIVE org.wso2.carbon.cassandra.datareader_4.3.0.SNAPSHOT
I have enabled DEBUG logs of DataSourceServiceComponent and it seems
setSecretCallbackHandlerService() method called twice when bundle
activation and private void initSystemDataSources() get called inside this
setter method. It gives the below exception when second time calling
initSystemDataSources() method. Is there anything wrong in our side with
the implementation of connect to cassandra enabling datasource?
[2014-10-28 14:50:23,521] INFO
{org.wso2.carbon.databridge.agent.thrift.internal.AgentDS} - Successfully
deployed Agent Client
[2014-10-28 14:50:23,586] DEBUG
{org.wso2.carbon.ndatasource.core.internal.DataSourceServiceComponent} -
SecretCallbackHandlerService acquired
[2014-10-28 14:50:23,586] DEBUG
{org.wso2.carbon.ndatasource.core.internal.DataSourceServiceComponent} -
Initializing system data sources...
[2014-10-28 14:50:23,778] DEBUG
{org.wso2.carbon.ndatasource.core.internal.DataSourceServiceComponent} -
SecretCallbackHandlerService acquired
[2014-10-28 14:50:23,778] DEBUG
{org.wso2.carbon.ndatasource.core.internal.DataSourceServiceComponent} -
Initializing system data sources...
[2014-10-28 14:50:23,793] ERROR
{org.wso2.carbon.ndatasource.core.internal.DataSourceServiceComponent} -
Error in intializing system data sources: Error in initializing system data
sources: Error in initializing system data sources at
'/home/indika/dev-zone/wso2-dev/fork/product-mb/modules/distribution/target/wso2mb-3.0.0-SNAPSHOT/repository/conf/datasources/master-datasources.xml'
- System datasource WSO2_CARBON_DBcan not be updated.
org.wso2.carbon.ndatasource.common.DataSourceException: Error in
initializing system data sources: Error in initializing system data sources
at
'/home/indika/dev-zone/wso2-dev/fork/product-mb/modules/distribution/target/wso2mb-3.0.0-SNAPSHOT/repository/conf/datasources/master-datasources.xml'
- System datasource WSO2_CARBON_DBcan not be updated.
at
org.wso2.carbon.ndatasource.core.DataSourceManager.initSystemDataSources(DataSourceManager.java:168)
at
org.wso2.carbon.ndatasource.core.internal.DataSourceServiceComponent.initSystemDataSources(DataSourceServiceComponent.java:191)
at
org.wso2.carbon.ndatasource.core.internal.DataSourceServiceComponent.setSecretCallbackHandlerService(DataSourceServiceComponent.java:177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.eclipse.equinox.internal.ds.model.ComponentReference.bind(ComponentReference.java:376)
at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.bindReference(ServiceComponentProp.java:432)
at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.bind(ServiceComponentProp.java:218)
at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:345)
at
org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
at
org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:197)
at
org.eclipse.equinox.internal.ds.Resolver.buildNewlySatisfied(Resolver.java:473)
at
org.eclipse.equinox.internal.ds.Resolver.enableComponents(Resolver.java:217)
at
org.eclipse.equinox.internal.ds.SCRManager.performWork(SCRManager.java:816)
at
org.eclipse.equinox.internal.ds.SCRManager$QueuedJob.dispatch(SCRManager.java:783)
at org.eclipse.equinox.internal.ds.WorkThread.run(WorkThread.java:89)
at java.lang.Thread.run(Thread.java:662)
Caused by: org.wso2.carbon.ndatasource.common.DataSourceException: Error in
initializing system data sources at
'/home/indika/dev-zone/wso2-dev/fork/product-mb/modules/distribution/target/wso2mb-3.0.0-SNAPSHOT/repository/conf/datasources/master-datasources.xml'
- System datasource WSO2_CARBON_DBcan not be updated.
at
org.wso2.carbon.ndatasource.core.DataSourceManager.initSystemDataSource(DataSourceManager.java:188)
at
org.wso2.carbon.ndatasource.core.DataSourceManager.initSystemDataSources(DataSourceManager.java:157)
... 18 more
Caused by: org.wso2.carbon.ndatasource.common.DataSourceException: System
datasource WSO2_CARBON_DBcan not be updated.
at
org.wso2.carbon.ndatasource.core.DataSourceRepository.registerDataSource(DataSourceRepository.java:344)
at
org.wso2.carbon.ndatasource.core.DataSourceRepository.addDataSource(DataSourceRepository.java:473)
at
org.wso2.carbon.ndatasource.core.DataSourceManager.initSystemDataSource(DataSourceManager.java:185)
... 19 more
[2014-10-28 14:50:23,795] DEBUG
{org.wso2.carbon.ndatasource.core.internal.DataSourceServiceComponent} -
ServerConfigurationService acquired
[2014-10-28 14:50:23,795] DEBUG
{org.wso2.carbon.ndatasource.core.internal.DataSourceServiceComponent} -
DataSourceServiceComponent activated
[2014-10-28 14:50:26,250] DEBUG
{org.wso2.carbon.ndatasource.core.internal.DataSourceServiceComponent} -
RealmService acquired
[2014-10-28 14:50:26,327] INFO
{org.wso2.carbon.registry.core.jdbc.EmbeddedRegistryService} - Configured
Registry in 33ms
[2014-10-28 14:50:26,415] INFO
{org.wso2.carbon.registry.core.internal.RegistryCoreServiceComponent} -
Registry Mode : READ-WRITE
[2014-10-28 14:50:26,419] DEBUG
{org.wso2.carbon.ndatasource.core.internal.DataSourceServiceComponent} -
RegistryService acquired
[2014-10-28 14:50:26,419] DEBUG
{org.wso2.carbon.ndatasource.core.internal.DataSourceServiceComponent} -
Initializing super tenant user data sources...
[2014-10-28 14:50:26,421] DEBUG
{org.wso2.carbon.ndatasource.core.internal.DataSourceServiceComponent} -
Super tenant user data sources successfully initialized
[2014-10-28 14:50:26,559] INFO
{org.wso2.carbon.user.core.internal.UserStoreMgtDSComponent} - Carbon
UserStoreMgtDSComponent activated successfully.
Cheers!
--
Indika Sampath
Software Engineer
WSO2 Inc.
http://wso2.com
Phone: +94 716 424 744
Blog: http://indikasampath.blogspot.com/
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