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/* =========================================================================================
* Copyright © 2013-2014 the kamon project <http://kamon.io/>
*
* 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 kamon.jdbc
import java.util.concurrent.TimeUnit.{ MILLISECONDS ⇒ milliseconds }
import akka.actor.{ ExtendedActorSystem, Extension, ExtensionId, ExtensionIdProvider }
import kamon.Kamon
object Jdbc extends ExtensionId[JdbcExtension] with ExtensionIdProvider {
override def lookup(): ExtensionId[_ <: Extension] = Jdbc
override def createExtension(system: ExtendedActorSystem): JdbcExtension = new JdbcExtension(system)
val SegmentLibraryName = "jdbc"
}
class JdbcExtension(system: ExtendedActorSystem) extends Kamon.Extension {
private val config = system.settings.config.getConfig("kamon.jdbc")
private val nameGeneratorFQN = config.getString("name-generator")
private val nameGenerator: JdbcNameGenerator = system.dynamicAccess.createInstanceFor[JdbcNameGenerator](nameGeneratorFQN, Nil).get
private val slowQueryProcessorClass = config.getString("slow-query-processor")
private val slowQueryProcessor: SlowQueryProcessor = system.dynamicAccess.createInstanceFor[SlowQueryProcessor](slowQueryProcessorClass, Nil).get
private val sqlErrorProcessorClass = config.getString("sql-error-processor")
private val sqlErrorProcessor: SqlErrorProcessor = system.dynamicAccess.createInstanceFor[SqlErrorProcessor](sqlErrorProcessorClass, Nil).get
val slowQueryThreshold = config.getDuration("slow-query-threshold", milliseconds)
def processSlowQuery(sql: String, executionTime: Long) = slowQueryProcessor.process(sql, executionTime, slowQueryThreshold)
def processSqlError(sql: String, ex: Throwable) = sqlErrorProcessor.process(sql, ex)
def generateJdbcSegmentName(statement: String): String = nameGenerator.generateJdbcSegmentName(statement)
}
trait SlowQueryProcessor {
def process(sql: String, executionTime: Long, queryThreshold: Long): Unit
}
trait SqlErrorProcessor {
def process(sql: String, ex: Throwable): Unit
}
trait JdbcNameGenerator {
def generateJdbcSegmentName(statement: String): String
}
class DefaultJdbcNameGenerator extends JdbcNameGenerator {
def generateJdbcSegmentName(statement: String): String = s"Jdbc[$statement]"
}
class DefaultSqlErrorProcessor extends SqlErrorProcessor {
import org.slf4j.LoggerFactory
val log = LoggerFactory.getLogger(classOf[DefaultSqlErrorProcessor])
override def process(sql: String, cause: Throwable): Unit = {
log.error(s"the query [$sql] failed with exception [${cause.getMessage}]")
}
}
class DefaultSlowQueryProcessor extends SlowQueryProcessor {
import org.slf4j.LoggerFactory
val log = LoggerFactory.getLogger(classOf[DefaultSlowQueryProcessor])
override def process(sql: String, executionTimeInMillis: Long, queryThresholdInMillis: Long): Unit = {
log.warn(s"The query [$sql] took $executionTimeInMillis ms and the slow query threshold is $queryThresholdInMillis ms")
}
}
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