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|
/* =========================================================================================
* Copyright © 2013-2017 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
package module
import com.typesafe.config.Config
import kamon.metric.PeriodSnapshot
import kamon.testkit.Reconfigure
import org.scalatest.concurrent.Eventually
import org.scalatest.{BeforeAndAfterAll, Matchers, WordSpec}
import kamon.{MetricReporter => LegacyMetricReporter}
class ModuleRegistrySpec extends WordSpec with Matchers with Reconfigure with Eventually with BeforeAndAfterAll {
"The ModuleRegistry" when {
"working with metrics reporters" should {
"report all metrics if no filters are applied" in {
Kamon.counter("test.hello").increment()
Kamon.counter("test.world").increment()
Kamon.counter("other.hello").increment()
val reporter = new SeenMetricsReporter()
val subscription = Kamon.addReporter(reporter, "reporter-registry-spec")
eventually {
reporter.snapshotCount() should be >= 1
reporter.metrics() should contain allOf(
"test.hello",
"test.world",
"other.hello"
)
}
subscription.cancel()
}
"default to deny all metrics if a provided filter name doesn't exist" in {
Kamon.counter("test.hello").increment()
Kamon.counter("test.world").increment()
Kamon.counter("other.hello").increment()
val reporter = new SeenMetricsReporter()
val subscription = Kamon.addReporter(reporter, "reporter-registry-spec", "does-not-exist")
eventually {
reporter.snapshotCount() should be >= 1
reporter.metrics() shouldBe empty
}
subscription.cancel()
}
"apply existent filters" in {
Kamon.counter("test.hello").increment()
Kamon.counter("test.world").increment()
Kamon.counter("other.hello").increment()
val reporter = new SeenMetricsReporter()
val subscription = Kamon.addReporter(reporter, "reporter-registry-spec", "real-filter")
eventually {
reporter.snapshotCount() should be >= 1
reporter.metrics() should contain allOf(
"test.hello",
"test.world"
)
}
subscription.cancel()
}
}
}
override protected def beforeAll(): Unit = {
applyConfig(
"""
|kamon {
| metric.tick-interval = 10 millis
|
| util.filters {
| real-filter {
| includes = [ "test**" ]
| }
| }
|}
|
""".stripMargin
)
}
override protected def afterAll(): Unit = {
resetConfig()
}
class SeenMetricsReporter extends LegacyMetricReporter {
@volatile private var count = 0
@volatile private var seenMetrics = Seq.empty[String]
override def reportPeriodSnapshot(snapshot: PeriodSnapshot): Unit = {
import snapshot.metrics._
count += 1
seenMetrics = counters.map(_.name) ++ histograms.map(_.name) ++ gauges.map(_.name) ++ rangeSamplers.map(_.name)
}
def metrics(): Seq[String] =
seenMetrics
def snapshotCount(): Int =
count
override def start(): Unit = {}
override def stop(): Unit = {}
override def reconfigure(config: Config): Unit = {}
}
}
|
