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author | Stewart Stewart <stewinsalot@gmail.com> | 2017-09-25 18:26:32 -0700 |
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committer | GitHub <noreply@github.com> | 2017-09-25 18:26:32 -0700 |
commit | 26a5eb401c48c08812f1292664848595e7f74806 (patch) | |
tree | 760ed57257308d9eeb78106911f86fcc76c59308 /src/main/scala/xyz/driver/core/database/MdcAsyncExecutor.scala | |
parent | 676ddd423470e58dda711a9363027aad98b74a59 (diff) | |
parent | 8d975a4d3681d0ba41bd8272f572a78de62e7f89 (diff) | |
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Merge pull request #66 from drivergroup/jstjohn/add_slick_mdcv1.2.0
Pull in slickmdc
Diffstat (limited to 'src/main/scala/xyz/driver/core/database/MdcAsyncExecutor.scala')
-rw-r--r-- | src/main/scala/xyz/driver/core/database/MdcAsyncExecutor.scala | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/main/scala/xyz/driver/core/database/MdcAsyncExecutor.scala b/src/main/scala/xyz/driver/core/database/MdcAsyncExecutor.scala new file mode 100644 index 0000000..5939efb --- /dev/null +++ b/src/main/scala/xyz/driver/core/database/MdcAsyncExecutor.scala @@ -0,0 +1,53 @@ +/** Code ported from "de.geekonaut" %% "slickmdc" % "1.0.0" + * License: @see https://github.com/AVGP/slickmdc/blob/master/LICENSE + * Blog post: @see http://50linesofco.de/post/2016-07-01-slick-and-slf4j-mdc-logging-in-scala.html + */ +package xyz.driver.core +package database + +import java.util.concurrent._ +import java.util.concurrent.atomic.AtomicInteger + +import scala.concurrent._ +import com.typesafe.scalalogging.StrictLogging +import slick.util.AsyncExecutor + +import logging.MdcExecutionContext + +/** Taken from the original Slick AsyncExecutor and simplified + * @see https://github.com/slick/slick/blob/3.1/slick/src/main/scala/slick/util/AsyncExecutor.scala + */ +object MdcAsyncExecutor extends StrictLogging { + + /** Create an AsyncExecutor with a fixed-size thread pool. + * + * @param name The name for the thread pool. + * @param numThreads The number of threads in the pool. + */ + def apply(name: String, numThreads: Int): AsyncExecutor = { + new AsyncExecutor { + val tf = new DaemonThreadFactory(name + "-") + + lazy val executionContext = { + new MdcExecutionContext(ExecutionContext.fromExecutor(Executors.newFixedThreadPool(numThreads, tf))) + } + + def close(): Unit = {} + } + } + + def default(name: String = "AsyncExecutor.default"): AsyncExecutor = apply(name, 20) + + private class DaemonThreadFactory(namePrefix: String) extends ThreadFactory { + private[this] val group = + Option(System.getSecurityManager).fold(Thread.currentThread.getThreadGroup)(_.getThreadGroup) + private[this] val threadNumber = new AtomicInteger(1) + + def newThread(r: Runnable): Thread = { + val t = new Thread(group, r, namePrefix + threadNumber.getAndIncrement, 0) + if (!t.isDaemon) t.setDaemon(true) + if (t.getPriority != Thread.NORM_PRIORITY) t.setPriority(Thread.NORM_PRIORITY) + t + } + } +} |