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/ *
* Copyright 2013 Robert von Burg < eitch @eitchnet.ch >
*
* Licensed under the Apache License , Version 2 . 0 ( the " License " ) ;
* you may not use this file except in compliance with the License .
* You may obtain a copy of the License at
*
* http : //www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing , software
* distributed under the License is distributed on an " AS IS " BASIS ,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND , either express or implied .
* See the License for the specific language governing permissions and
* limitations under the License .
* /
package li.strolch.persistence.postgresql ;
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import static ch.eitchnet.db.DbConstants.PROP_ALLOW_DATA_INIT_ON_SCHEMA_CREATE ;
import static ch.eitchnet.db.DbConstants.PROP_ALLOW_SCHEMA_CREATION ;
import static ch.eitchnet.db.DbConstants.PROP_ALLOW_SCHEMA_DROP ;
import static ch.eitchnet.db.DbConstants.PROP_ALLOW_SCHEMA_MIGRATION ;
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import static li.strolch.agent.api.RealmHandler.SYSTEM_USER_DB_INITIALIZER ;
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import java.sql.Connection ;
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import java.text.MessageFormat ;
import java.util.Map ;
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import java.util.Map.Entry ;
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import javax.sql.DataSource ;
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import li.strolch.agent.api.ComponentContainer ;
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import li.strolch.agent.api.RealmHandler ;
import li.strolch.agent.api.StrolchAgent ;
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import li.strolch.agent.api.StrolchComponent ;
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import li.strolch.agent.api.StrolchRealm ;
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import li.strolch.persistence.api.ActivityDao ;
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import li.strolch.persistence.api.AuditDao ;
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import li.strolch.persistence.api.OrderDao ;
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import li.strolch.persistence.api.PersistenceHandler ;
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import li.strolch.persistence.api.ResourceDao ;
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import li.strolch.persistence.api.StrolchPersistenceException ;
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import li.strolch.persistence.api.StrolchTransaction ;
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import li.strolch.persistence.postgresql.PostgreSqlDbConnectionBuilder.StrolchPostgreDataSource ;
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import li.strolch.runtime.configuration.ComponentConfiguration ;
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import li.strolch.runtime.configuration.DbConnectionBuilder ;
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import li.strolch.runtime.configuration.StrolchConfiguration ;
import li.strolch.runtime.privilege.PrivilegeHandler ;
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import ch.eitchnet.db.DbMigrationState ;
import ch.eitchnet.db.DbSchemaVersionCheck ;
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import ch.eitchnet.privilege.model.Certificate ;
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/ * *
* @author Robert von Burg < eitch @eitchnet.ch >
* /
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public class PostgreSqlPersistenceHandler extends StrolchComponent implements PersistenceHandler {
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public static final String SCRIPT_PREFIX = " strolch " ; //$NON-NLS-1$
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private Map < String , DataSource > dsMap ;
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public PostgreSqlPersistenceHandler ( ComponentContainer container , String componentName ) {
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super ( container , componentName ) ;
}
@Override
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public void initialize ( ComponentConfiguration componentConfiguration ) throws Exception {
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// server loader does not seem to work in all contexts, thus:
org . postgresql . Driver . getLogLevel ( ) ;
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DbConnectionBuilder connectionBuilder = new PostgreSqlDbConnectionBuilder ( getContainer ( ) ,
componentConfiguration ) ;
this . dsMap = connectionBuilder . build ( ) ;
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super . initialize ( componentConfiguration ) ;
}
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/ * *
* Returns the map of { @link DbConnectionInfo } which can be used in maintenance mode
*
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* @return the dsMap
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* /
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public Map < String , DataSource > getDataSources ( ) {
return this . dsMap ;
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}
@Override
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public void start ( ) throws Exception {
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ComponentConfiguration configuration = getConfiguration ( ) ;
boolean allowSchemaCreation = configuration . getBoolean ( PROP_ALLOW_SCHEMA_CREATION , Boolean . FALSE ) ;
boolean allowSchemaMigration = configuration . getBoolean ( PROP_ALLOW_SCHEMA_MIGRATION , Boolean . FALSE ) ;
boolean allowSchemaDrop = configuration . getBoolean ( PROP_ALLOW_SCHEMA_DROP , Boolean . FALSE ) ;
boolean allowDataInitOnSchemaCreate = configuration . getBoolean ( PROP_ALLOW_DATA_INIT_ON_SCHEMA_CREATE ,
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Boolean . FALSE ) ;
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DbSchemaVersionCheck schemaVersionCheck = new DbSchemaVersionCheck ( SCRIPT_PREFIX , this . getClass ( ) ,
allowSchemaCreation , allowSchemaMigration , allowSchemaDrop ) ;
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schemaVersionCheck . checkSchemaVersion ( this . dsMap ) ;
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// if allowed, perform DB initialization
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if ( ! allowSchemaCreation | | ! allowDataInitOnSchemaCreate ) {
logger . info ( " Data Initialization not enabled as either 'allowSchemaCreation or 'allowDataInitOnSchemaCreate' is false!, so not checking if needed. " ) ; //$NON-NLS-1$
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} else {
Map < String , DbMigrationState > dbMigrationStates = schemaVersionCheck . getDbMigrationStates ( ) ;
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String msg = " Data Initialization is enabled, checking for {0} realms if DB initialization is required... " ; //$NON-NLS-1$
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logger . info ( MessageFormat . format ( msg , dbMigrationStates . size ( ) ) ) ;
PrivilegeHandler privilegeHandler = getContainer ( ) . getPrivilegeHandler ( ) ;
StrolchAgent agent = getContainer ( ) . getAgent ( ) ;
PostgreSqlSchemaInitializer schemaInitializer = new PostgreSqlSchemaInitializer ( agent , this ,
dbMigrationStates ) ;
privilegeHandler . runAsSystem ( SYSTEM_USER_DB_INITIALIZER , schemaInitializer ) ;
}
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super . start ( ) ;
}
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@Override
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public void destroy ( ) throws Exception {
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for ( Entry < String , DataSource > entry : this . dsMap . entrySet ( ) ) {
StrolchPostgreDataSource ds = ( StrolchPostgreDataSource ) entry . getValue ( ) ;
ds . shutdown ( ) ;
}
super . destroy ( ) ;
}
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@Override
public StrolchTransaction openTx ( StrolchRealm realm , Certificate certificate , String action ) {
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return new PostgreSqlStrolchTransaction ( getContainer ( ) . getPrivilegeHandler ( ) , realm , certificate , action , this ) ;
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}
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Connection getConnection ( String realm ) {
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DataSource ds = this . dsMap . get ( realm ) ;
if ( ds = = null ) {
String msg = MessageFormat . format ( " There is no DataSource registered for the realm {0} " , realm ) ; //$NON-NLS-1$
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throw new StrolchPersistenceException ( msg ) ;
}
try {
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return ds . getConnection ( ) ;
} catch ( Exception e ) {
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String msg = " Failed to open a connection to {0} due to {1} " ; //$NON-NLS-1$
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throw new StrolchPersistenceException ( MessageFormat . format ( msg , ds , e . getMessage ( ) ) , e ) ;
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}
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}
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@Override
public OrderDao getOrderDao ( StrolchTransaction tx ) {
return ( ( PostgreSqlStrolchTransaction ) tx ) . getOrderDao ( ) ;
}
@Override
public ResourceDao getResourceDao ( StrolchTransaction tx ) {
return ( ( PostgreSqlStrolchTransaction ) tx ) . getResourceDao ( ) ;
}
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@Override
public ActivityDao getActivityDao ( StrolchTransaction tx ) {
return ( ( PostgreSqlStrolchTransaction ) tx ) . getActivityDao ( ) ;
}
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@Override
public AuditDao getAuditDao ( StrolchTransaction tx ) {
return ( ( PostgreSqlStrolchTransaction ) tx ) . getAuditDao ( ) ;
}
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@Override
public void performDbInitialization ( ) {
ComponentContainer container = getContainer ( ) ;
StrolchAgent agent = container . getAgent ( ) ;
PrivilegeHandler privilegeHandler = container . getPrivilegeHandler ( ) ;
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StrolchConfiguration strolchConfiguration = getContainer ( ) . getAgent ( ) . getStrolchConfiguration ( ) ;
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PostgreSqlDbInitializer sqlDbInitializer = new PostgreSqlDbInitializer ( agent , this ,
strolchConfiguration . getComponentConfiguration ( getName ( ) ) ) ;
privilegeHandler . runAsSystem ( RealmHandler . SYSTEM_USER_DB_INITIALIZER , sqlDbInitializer ) ;
}
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}