我正在尝试使用Kamon进行MDC传播,如documentation中所示。但它似乎没有像他们说的那样工作
Play framework - 2.5
kamon-core - 0.6.2
kamon-play-25 - 0.6.2
我的回归模式:
<pattern>%d{HH:mm:ss.SSS} [%thread] [%level] [%traceToken]- %logger{36}\(%L\) %X{X-ApplicationId} - %message%n%xException</pattern>
我创建了一个过滤器:
class AccessLoggingFilter @Inject() (implicit val mat: Materializer, ec: ExecutionContext) extends Filter with LazyLogging { val ApplicationIdKey = AvailableToMdc("X-ApplicationId") def apply(next: (RequestHeader) => Future[Result])(request: RequestHeader): Future[Result] = { TraceLocal.storeForMdc("X-ApplicationId", request.id.toString) logger.error("first Location") withMdc { logger.error("Second location") next(request) }}}
并像这样添加:
class MyFilters @Inject() (accessLoggingFilter: AccessLoggingFilter) extends DefaultHttpFilters(accessLoggingFilter)
现在,当我对服务器进行http调用时,我得到以下输出:
c.v.i.utils.AccessLoggingFilter(24) - first Location c.v.i.utils.AccessLoggingFilter(26) 1 - Second location
之后的所有日志打印都没有显示&#39; 1&#39; X-ApplicationId
无法弄清楚我做错了什么。
答案 0 :(得分:1)
这是一个完整的(几乎)示例:
build.sbt:
name := "kamon-play-example"
version := "1.0"
scalaVersion := "2.11.7"
val kamonVersion = "0.6.2"
val resolutionRepos = Seq("Kamon Repository Snapshots" at "http://snapshots.kamon.io")
val dependencies = Seq(
"io.kamon" %% "kamon-play-25" % kamonVersion,
"io.kamon" %% "kamon-log-reporter" % kamonVersion
)
lazy val root = (project in file(".")).enablePlugins(PlayScala)
.settings(resolvers ++= resolutionRepos)
.settings(libraryDependencies ++= dependencies)
基本过滤器:
class TraceLocalFilter @Inject() (implicit val mat: Materializer, ec: ExecutionContext) extends Filter {
val logger = Logger(this.getClass)
val TraceLocalStorageKey = "MyTraceLocalStorageKey"
val userAgentHeader = "User-Agent"
//this value will be available in the MDC at the moment to call to Logger.*()s
val UserAgentHeaderAvailableToMDC = AvailableToMdc(userAgentHeader)
override def apply(next: (RequestHeader) ⇒ Future[Result])(header: RequestHeader): Future[Result] = {
def onResult(result:Result) = {
val traceLocalContainer = TraceLocal.retrieve(TraceLocalKey).getOrElse(TraceLocalContainer("unknown","unknown"))
result.withHeaders(TraceLocalStorageKey -> traceLocalContainer.traceToken)
}
//update the TraceLocalStorage
TraceLocal.store(TraceLocalKey)(TraceLocalContainer(header.headers.get(TraceLocalStorageKey).getOrElse("unknown"), "unknown"))
TraceLocal.store(UserAgentHeaderAvailableToMDC)(header.headers.get(userAgentHeader).getOrElse("unknown"))
//call the action
next(header).map(onResult)
}
}
我们需要添加过滤器:
class Filters @Inject() (traceLocalFilter: TraceLocalFilter) extends HttpFilters {
val filters = Seq(traceLocalFilter)
}
一个非常简单的控制器和动作:
class KamonPlayExample @Inject() (kamon: Kamon) extends Controller {
def sayHello = Action.async {
Future {
logger.info("Say hello to Kamon")
Ok("Say hello to Kamon")
}
}
}
在logback.xml中添加以下模式:
<pattern>%date{HH:mm:ss.SSS} %-5level [%traceToken][%X{User-Agent}] [%thread] %logger{55} - %msg%n</pattern>
添加sbt-aspectj-runner
插件,以便在DEV模式下使用Aspectjweaver
运行应用程序:
addSbtPlugin("io.kamon" % "aspectj-play-runner" % "0.1.3")
使用aspectj-runner:run
运行应用程序并制作一些curls
:
curl -i -H 'X-Trace-Token:kamon-test' -H 'User-Agent:Super-User-Agent' -X GET "http://localhost:9000/helloKamon"
curl -i -H 'X-Trace-Token:kamon-test'-X GET "http://localhost:9000/helloKamon"
控制台中的:
15:09:16.027 INFO [kamon-test][Super-User-Agent] [application-akka.actor.default-dispatcher-8] controllers.KamonPlayExample - Say hello to Kamon
15:09:24.034 INFO [kamon-test][curl/7.47.1] [application-akka.actor.default-dispatcher-8] controllers.KamonPlayExample - Say hello to Kamon
希望你能帮忙。