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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.trace
import kamon.testkit.BaseKamonSpec
import kamon.trace.TraceLocal.AvailableToMdc
import kamon.trace.logging.MdcKeysSupport
import org.scalatest.concurrent.PatienceConfiguration
import org.scalatest.OptionValues
import org.slf4j.MDC
class TraceLocalSpec extends BaseKamonSpec("trace-local-spec") with PatienceConfiguration with OptionValues with MdcKeysSupport {
val SampleTraceLocalKeyAvailableToMDC = AvailableToMdc("someKey")
object SampleTraceLocalKey extends TraceLocal.TraceLocalKey { type ValueType = String }
"the TraceLocal storage" should {
"allow storing and retrieving values" in {
Tracer.withContext(newContext("store-and-retrieve-trace-local")) {
val testString = "Hello World"
TraceLocal.store(SampleTraceLocalKey)(testString)
TraceLocal.retrieve(SampleTraceLocalKey).value should equal(testString)
}
}
"return None when retrieving a non existent key" in {
Tracer.withContext(newContext("non-existent-key")) {
TraceLocal.retrieve(SampleTraceLocalKey) should equal(None)
}
}
"return None when retrieving a key without a current TraceContext" in {
TraceLocal.retrieve(SampleTraceLocalKey) should equal(None)
}
"be attached to the TraceContext when it is propagated" in {
val testString = "Hello World"
val testContext = Tracer.withContext(newContext("manually-propagated-trace-local")) {
TraceLocal.store(SampleTraceLocalKey)(testString)
TraceLocal.retrieve(SampleTraceLocalKey).value should equal(testString)
Tracer.currentContext
}
/** No TraceLocal should be available here */
TraceLocal.retrieve(SampleTraceLocalKey) should equal(None)
Tracer.withContext(testContext) {
TraceLocal.retrieve(SampleTraceLocalKey).value should equal(testString)
}
}
"allow retrieve a value from the MDC when was created a key with AvailableToMdc(cool-key)" in {
Tracer.withContext(newContext("store-and-retrieve-trace-local-and-copy-to-mdc")) {
val testString = "Hello MDC"
TraceLocal.store(SampleTraceLocalKeyAvailableToMDC)(testString)
TraceLocal.retrieve(SampleTraceLocalKeyAvailableToMDC).value should equal(testString)
withMdc {
MDC.get("someKey") should equal(testString)
}
}
}
"allow retrieve a value from the MDC when was created a key with AvailableToMdc.storeForMdc(String, String)" in {
Tracer.withContext(newContext("store-and-retrieve-trace-local-and-copy-to-mdc")) {
val testString = "Hello MDC"
TraceLocal.storeForMdc("someKey", testString)
TraceLocal.retrieve(SampleTraceLocalKeyAvailableToMDC).value should equal(testString)
withMdc {
MDC.get("someKey") should equal(testString)
}
}
}
}
}
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