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authorDan Timoney <dtimoney@att.com>2019-10-14 19:14:21 +0000
committerGerrit Code Review <gerrit@onap.org>2019-10-14 19:14:21 +0000
commiteed407003be0586fd93d8bced4daa32975a24794 (patch)
treec8098365d693ef648d43b17fd937ce499ae4dd54
parentcf31e364e6f6331528503d26f9f296103e4ff076 (diff)
parentd48433deac84f774c730bf4edbb2be50804f99c5 (diff)
Merge "Add reactive log tracing service."
-rw-r--r--ms/blueprintsprocessor/application/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/LoggingWebFilter.kt39
-rwxr-xr-xms/blueprintsprocessor/application/src/main/resources/application-dev.properties2
-rw-r--r--ms/blueprintsprocessor/application/src/main/resources/logback.xml7
-rw-r--r--ms/blueprintsprocessor/modules/commons/processor-core/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/core/LoggerExtensions.kt45
-rw-r--r--ms/blueprintsprocessor/modules/commons/processor-core/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/core/service/BluePrintProcessorLoggingService.kt109
-rw-r--r--ms/blueprintsprocessor/modules/inbounds/designer-api/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/designer/api/BlueprintModelController.kt25
-rw-r--r--ms/blueprintsprocessor/modules/inbounds/selfservice-api/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/selfservice/api/ExecutionServiceController.kt26
-rw-r--r--ms/controllerblueprints/modules/blueprint-core/src/main/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/MDCContext.kt50
-rw-r--r--ms/controllerblueprints/modules/blueprint-core/src/test/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/MDCContextTest.kt56
9 files changed, 335 insertions, 24 deletions
diff --git a/ms/blueprintsprocessor/application/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/LoggingWebFilter.kt b/ms/blueprintsprocessor/application/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/LoggingWebFilter.kt
new file mode 100644
index 000000000..5ed5ff450
--- /dev/null
+++ b/ms/blueprintsprocessor/application/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/LoggingWebFilter.kt
@@ -0,0 +1,39 @@
+/*
+ * Copyright © 2018-2019 AT&T Intellectual Property.
+ *
+ * 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 org.onap.ccsdk.cds.blueprintsprocessor
+
+import org.onap.ccsdk.cds.blueprintsprocessor.core.service.LoggingService
+import org.onap.ccsdk.cds.controllerblueprints.core.MDCContext
+import org.springframework.stereotype.Component
+import org.springframework.web.server.ServerWebExchange
+import org.springframework.web.server.WebFilter
+import org.springframework.web.server.WebFilterChain
+import reactor.core.publisher.Mono
+import reactor.util.context.Context
+
+@Component
+open class LoggingWebFilter : WebFilter {
+ override fun filter(serverWebExchange: ServerWebExchange, webFilterChain: WebFilterChain): Mono<Void> {
+
+ val loggingService = LoggingService()
+ loggingService.entering(serverWebExchange.request)
+ val filterChain = webFilterChain.filter(serverWebExchange).subscriberContext(
+ Context.of(MDCContext, MDCContext()))
+ loggingService.exiting(serverWebExchange.request, serverWebExchange.response)
+ return filterChain
+ }
+} \ No newline at end of file
diff --git a/ms/blueprintsprocessor/application/src/main/resources/application-dev.properties b/ms/blueprintsprocessor/application/src/main/resources/application-dev.properties
index e40ccba09..faabb80e7 100755
--- a/ms/blueprintsprocessor/application/src/main/resources/application-dev.properties
+++ b/ms/blueprintsprocessor/application/src/main/resources/application-dev.properties
@@ -36,7 +36,7 @@ blueprintsprocessor.blueprintArchivePath=blueprints/archive
blueprintsprocessor.blueprintWorkingPath=blueprints/work
# Controller Blueprint Load Configurations
# blueprints.load.initial-data may be overridden by ENV variables
-blueprintsprocessor.loadInitialData=true
+blueprintsprocessor.loadInitialData=false
blueprintsprocessor.loadBluePrint=false
blueprintsprocessor.loadBluePrintPaths=./../../../components/model-catalog/blueprint-model/service-blueprint
blueprintsprocessor.loadModelType=true
diff --git a/ms/blueprintsprocessor/application/src/main/resources/logback.xml b/ms/blueprintsprocessor/application/src/main/resources/logback.xml
index 6f917096d..9d2b82f25 100644
--- a/ms/blueprintsprocessor/application/src/main/resources/logback.xml
+++ b/ms/blueprintsprocessor/application/src/main/resources/logback.xml
@@ -15,11 +15,16 @@
-->
<configuration>
+
+ <property name="localPattern" value="%d{HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n"/>
+ <property name="defaultPattern"
+ value="%date{ISO8601,UTC}|%X{RequestID}|%X{InvocationID}|%thread|%X{ServiceName}|%X{ClientIPAddress}|%logger{50}| %msg%n"/>
+
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<!-- encoders are assigned the type
ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
<encoder>
- <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
+ <pattern>${defaultPattern}</pattern>
</encoder>
</appender>
diff --git a/ms/blueprintsprocessor/modules/commons/processor-core/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/core/LoggerExtensions.kt b/ms/blueprintsprocessor/modules/commons/processor-core/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/core/LoggerExtensions.kt
new file mode 100644
index 000000000..cdf6ce195
--- /dev/null
+++ b/ms/blueprintsprocessor/modules/commons/processor-core/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/core/LoggerExtensions.kt
@@ -0,0 +1,45 @@
+/*
+ * Copyright © 2018-2019 AT&T Intellectual Property.
+ *
+ * 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 org.onap.ccsdk.cds.blueprintsprocessor.core
+
+import kotlinx.coroutines.*
+import kotlinx.coroutines.reactor.ReactorContext
+import kotlinx.coroutines.reactor.asCoroutineContext
+import org.onap.ccsdk.cds.blueprintsprocessor.core.service.MonoMDCCoroutine
+import org.onap.ccsdk.cds.controllerblueprints.core.MDCContext
+import reactor.core.publisher.Mono
+import kotlin.coroutines.CoroutineContext
+import kotlin.coroutines.EmptyCoroutineContext
+
+/** Used in Rest controller API methods to populate MDC context to nested coroutines from reactor web filter context. */
+@UseExperimental(InternalCoroutinesApi::class)
+fun <T> monoMdc(context: CoroutineContext = EmptyCoroutineContext,
+ block: suspend CoroutineScope.() -> T?): Mono<T> = Mono.create { sink ->
+
+ val reactorContext = (context[ReactorContext]?.context?.putAll(sink.currentContext())
+ ?: sink.currentContext()).asCoroutineContext()
+ /** Populate MDC context only if present in Reactor Context */
+ val newContext = if (!reactorContext.context.isEmpty
+ && reactorContext.context.hasKey(MDCContext)) {
+ val mdcContext = reactorContext.context.get<MDCContext>(MDCContext)
+ GlobalScope.newCoroutineContext(context + reactorContext + mdcContext)
+ } else GlobalScope.newCoroutineContext(context + reactorContext)
+
+ val coroutine = MonoMDCCoroutine(newContext, sink)
+ sink.onDispose(coroutine)
+ coroutine.start(CoroutineStart.DEFAULT, coroutine, block)
+} \ No newline at end of file
diff --git a/ms/blueprintsprocessor/modules/commons/processor-core/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/core/service/BluePrintProcessorLoggingService.kt b/ms/blueprintsprocessor/modules/commons/processor-core/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/core/service/BluePrintProcessorLoggingService.kt
new file mode 100644
index 000000000..4da7dcd0e
--- /dev/null
+++ b/ms/blueprintsprocessor/modules/commons/processor-core/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/core/service/BluePrintProcessorLoggingService.kt
@@ -0,0 +1,109 @@
+/*
+ * Copyright © 2018-2019 AT&T Intellectual Property.
+ *
+ * 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 org.onap.ccsdk.cds.blueprintsprocessor.core.service
+
+import kotlinx.coroutines.AbstractCoroutine
+import kotlinx.coroutines.InternalCoroutinesApi
+import kotlinx.coroutines.handleCoroutineException
+import org.onap.ccsdk.cds.controllerblueprints.core.logger
+import org.slf4j.MDC
+import org.springframework.http.server.reactive.ServerHttpRequest
+import org.springframework.http.server.reactive.ServerHttpResponse
+import reactor.core.Disposable
+import reactor.core.publisher.MonoSink
+import java.time.ZoneOffset
+import java.time.ZonedDateTime
+import java.time.format.DateTimeFormatter
+import java.util.*
+import kotlin.coroutines.CoroutineContext
+
+class LoggingService {
+ private val log = logger(LoggingService::class)
+
+ companion object {
+ const val ONAP_REQUEST_ID = "X-ONAP-RequestID"
+ const val ONAP_INVOCATION_ID = "X-ONAP-InvocationID"
+ const val ONAP_PARTNER_NAME = "X-ONAP-PartnerName"
+ }
+
+ fun entering(request: ServerHttpRequest) {
+ val headers = request.headers
+ val requestID = defaultToUUID(headers.getFirst(ONAP_REQUEST_ID))
+ val invocationID = defaultToUUID(headers.getFirst(ONAP_INVOCATION_ID))
+ val partnerName = defaultToEmpty(headers.getFirst(ONAP_PARTNER_NAME))
+ MDC.put("InvokeTimestamp", ZonedDateTime.now(ZoneOffset.UTC).format(DateTimeFormatter.ISO_INSTANT))
+ MDC.put("RequestID", requestID)
+ MDC.put("InvocationID", invocationID)
+ MDC.put("PartnerName", partnerName)
+ MDC.put("ClientIPAddress", defaultToEmpty(request.remoteAddress?.address?.hostAddress))
+ MDC.put("ServerFQDN", defaultToEmpty(request.remoteAddress?.hostString))
+ if (MDC.get("ServiceName") == null || MDC.get("ServiceName").equals("", ignoreCase = true)) {
+ MDC.put("ServiceName", request.uri.path)
+ }
+ }
+
+ fun exiting(request: ServerHttpRequest, response: ServerHttpResponse) {
+ try {
+ val reqHeaders = request.headers
+ val resHeaders = response.headers
+ resHeaders[ONAP_REQUEST_ID] = MDC.get("RequestID")
+ resHeaders[ONAP_INVOCATION_ID] = MDC.get("InvocationID")
+ } catch (e: Exception) {
+ log.warn("couldn't set response headers", e)
+ } finally {
+ MDC.clear()
+ }
+ }
+
+ private fun defaultToEmpty(input: Any?): String {
+ return input?.toString() ?: ""
+ }
+
+ private fun defaultToUUID(input: String?): String {
+ return input ?: UUID.randomUUID().toString()
+ }
+}
+
+
+@InternalCoroutinesApi
+class MonoMDCCoroutine<in T>(
+ parentContext: CoroutineContext,
+ private val sink: MonoSink<T>
+) : AbstractCoroutine<T>(parentContext, true), Disposable {
+ private var disposed = false
+
+ override fun onCompleted(value: T) {
+ if (!disposed) {
+ if (value == null) sink.success() else sink.success(value)
+ }
+ }
+
+ override fun onCancelled(cause: Throwable, handled: Boolean) {
+ if (!disposed) {
+ sink.error(cause)
+ } else if (!handled) {
+ handleCoroutineException(context, cause)
+ }
+ }
+
+ override fun dispose() {
+ disposed = true
+ cancel()
+ }
+
+ override fun isDisposed(): Boolean = disposed
+}
diff --git a/ms/blueprintsprocessor/modules/inbounds/designer-api/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/designer/api/BlueprintModelController.kt b/ms/blueprintsprocessor/modules/inbounds/designer-api/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/designer/api/BlueprintModelController.kt
index 4d13486c3..a6bff7051 100644
--- a/ms/blueprintsprocessor/modules/inbounds/designer-api/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/designer/api/BlueprintModelController.kt
+++ b/ms/blueprintsprocessor/modules/inbounds/designer-api/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/designer/api/BlueprintModelController.kt
@@ -19,7 +19,7 @@ package org.onap.ccsdk.cds.blueprintsprocessor.designer.api
import io.swagger.annotations.ApiOperation
import io.swagger.annotations.ApiParam
-import kotlinx.coroutines.runBlocking
+import org.onap.ccsdk.cds.blueprintsprocessor.core.monoMdc
import org.onap.ccsdk.cds.blueprintsprocessor.db.primary.domain.BlueprintModelSearch
import org.onap.ccsdk.cds.blueprintsprocessor.designer.api.handler.BluePrintModelHandler
import org.onap.ccsdk.cds.controllerblueprints.core.BluePrintException
@@ -29,6 +29,7 @@ import org.springframework.http.ResponseEntity
import org.springframework.http.codec.multipart.FilePart
import org.springframework.security.access.prepost.PreAuthorize
import org.springframework.web.bind.annotation.*
+import reactor.core.publisher.Mono
/**
* BlueprintModelController Purpose: Handle controllerBlueprint API request
@@ -44,7 +45,7 @@ open class BlueprintModelController(private val bluePrintModelHandler: BluePrint
@ResponseBody
@Throws(BluePrintException::class)
@PreAuthorize("hasRole('USER')")
- fun saveBlueprint(@RequestPart("file") filePart: FilePart): BlueprintModelSearch = runBlocking {
+ fun saveBlueprint(@RequestPart("file") filePart: FilePart): Mono<BlueprintModelSearch> = monoMdc {
bluePrintModelHandler.saveBlueprintModel(filePart)
}
@@ -67,8 +68,9 @@ open class BlueprintModelController(private val bluePrintModelHandler: BluePrint
@Throws(BluePrintException::class)
@PreAuthorize("hasRole('USER')")
fun getBlueprintByNameAndVersion(@PathVariable(value = "name") name: String,
- @PathVariable(value = "version") version: String): BlueprintModelSearch {
- return this.bluePrintModelHandler.getBlueprintModelSearchByNameAndVersion(name, version)
+ @PathVariable(value = "version") version: String)
+ : Mono<BlueprintModelSearch> = monoMdc {
+ bluePrintModelHandler.getBlueprintModelSearchByNameAndVersion(name, version)
}
@GetMapping("/download/by-name/{name}/version/{version}", produces = [MediaType.APPLICATION_JSON_VALUE])
@@ -76,8 +78,9 @@ open class BlueprintModelController(private val bluePrintModelHandler: BluePrint
@Throws(BluePrintException::class)
@PreAuthorize("hasRole('USER')")
fun downloadBlueprintByNameAndVersion(@PathVariable(value = "name") name: String,
- @PathVariable(value = "version") version: String): ResponseEntity<Resource> {
- return this.bluePrintModelHandler.downloadBlueprintModelFileByNameAndVersion(name, version)
+ @PathVariable(value = "version") version: String)
+ : Mono<ResponseEntity<Resource>> = monoMdc {
+ bluePrintModelHandler.downloadBlueprintModelFileByNameAndVersion(name, version)
}
@GetMapping("/{id}", produces = [MediaType.APPLICATION_JSON_VALUE])
@@ -92,8 +95,8 @@ open class BlueprintModelController(private val bluePrintModelHandler: BluePrint
@ResponseBody
@Throws(BluePrintException::class)
@PreAuthorize("hasRole('USER')")
- fun downloadBluePrint(@PathVariable(value = "id") id: String): ResponseEntity<Resource> {
- return this.bluePrintModelHandler.downloadBlueprintModelFile(id)
+ fun downloadBluePrint(@PathVariable(value = "id") id: String): Mono<ResponseEntity<Resource>> = monoMdc {
+ bluePrintModelHandler.downloadBlueprintModelFile(id)
}
@PostMapping("/enrich", produces = [MediaType.APPLICATION_JSON_VALUE], consumes = [MediaType
@@ -101,7 +104,7 @@ open class BlueprintModelController(private val bluePrintModelHandler: BluePrint
@ResponseBody
@Throws(BluePrintException::class)
@PreAuthorize("hasRole('USER')")
- fun enrichBlueprint(@RequestPart("file") file: FilePart): ResponseEntity<Resource> = runBlocking {
+ fun enrichBlueprint(@RequestPart("file") file: FilePart): Mono<ResponseEntity<Resource>> = monoMdc {
bluePrintModelHandler.enrichBlueprint(file)
}
@@ -109,7 +112,7 @@ open class BlueprintModelController(private val bluePrintModelHandler: BluePrint
@ResponseBody
@Throws(BluePrintException::class)
@PreAuthorize("hasRole('USER')")
- fun publishBlueprint(@RequestPart("file") file: FilePart): BlueprintModelSearch = runBlocking {
+ fun publishBlueprint(@RequestPart("file") file: FilePart): Mono<BlueprintModelSearch> = monoMdc {
bluePrintModelHandler.publishBlueprint(file)
}
@@ -128,7 +131,7 @@ open class BlueprintModelController(private val bluePrintModelHandler: BluePrint
fun deleteBlueprint(@ApiParam(value = "Name of the CBA.", required = true)
@PathVariable(value = "name") name: String,
@ApiParam(value = "Version of the CBA.", required = true)
- @PathVariable(value = "version") version: String) = runBlocking {
+ @PathVariable(value = "version") version: String) = monoMdc {
bluePrintModelHandler.deleteBlueprintModel(name, version)
}
}
diff --git a/ms/blueprintsprocessor/modules/inbounds/selfservice-api/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/selfservice/api/ExecutionServiceController.kt b/ms/blueprintsprocessor/modules/inbounds/selfservice-api/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/selfservice/api/ExecutionServiceController.kt
index 4441d2b4b..f14f61e60 100644
--- a/ms/blueprintsprocessor/modules/inbounds/selfservice-api/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/selfservice/api/ExecutionServiceController.kt
+++ b/ms/blueprintsprocessor/modules/inbounds/selfservice-api/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/selfservice/api/ExecutionServiceController.kt
@@ -17,27 +17,29 @@
package org.onap.ccsdk.cds.blueprintsprocessor.selfservice.api
-import com.fasterxml.jackson.databind.JsonNode
import io.swagger.annotations.Api
import io.swagger.annotations.ApiOperation
import io.swagger.annotations.ApiParam
-import kotlinx.coroutines.runBlocking
import org.onap.ccsdk.cds.blueprintsprocessor.core.api.data.ACTION_MODE_ASYNC
import org.onap.ccsdk.cds.blueprintsprocessor.core.api.data.ExecutionServiceInput
import org.onap.ccsdk.cds.blueprintsprocessor.core.api.data.ExecutionServiceOutput
+import org.onap.ccsdk.cds.blueprintsprocessor.core.monoMdc
import org.onap.ccsdk.cds.blueprintsprocessor.selfservice.api.utils.determineHttpStatusCode
import org.onap.ccsdk.cds.controllerblueprints.core.asJsonPrimitive
+import org.onap.ccsdk.cds.controllerblueprints.core.logger
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.http.MediaType
import org.springframework.http.ResponseEntity
import org.springframework.security.access.prepost.PreAuthorize
import org.springframework.web.bind.annotation.*
+import reactor.core.publisher.Mono
@RestController
@RequestMapping("/api/v1/execution-service")
@Api(value = "/api/v1/execution-service",
description = "Interaction with CBA.")
open class ExecutionServiceController {
+ val log = logger(ExecutionServiceController::class)
@Autowired
lateinit var executionServiceHandler: ExecutionServiceHandler
@@ -47,7 +49,8 @@ open class ExecutionServiceController {
produces = [MediaType.APPLICATION_JSON_VALUE])
@ResponseBody
@ApiOperation(value = "Health Check", hidden = true)
- fun executionServiceControllerHealthCheck(): JsonNode = runBlocking {
+ fun executionServiceControllerHealthCheck() = monoMdc {
+ log.info("Health check success...")
"Success".asJsonPrimitive()
}
@@ -59,12 +62,13 @@ open class ExecutionServiceController {
@ResponseBody
@PreAuthorize("hasRole('USER')")
fun process(@ApiParam(value = "ExecutionServiceInput payload.", required = true)
- @RequestBody executionServiceInput: ExecutionServiceInput): ResponseEntity<ExecutionServiceOutput> =
- runBlocking {
- if (executionServiceInput.actionIdentifiers.mode == ACTION_MODE_ASYNC) {
- throw IllegalStateException("Can't process async request through the REST endpoint. Use gRPC for async processing.")
- }
- val processResult = executionServiceHandler.doProcess(executionServiceInput)
- ResponseEntity(processResult, determineHttpStatusCode(processResult.status.code))
- }
+ @RequestBody executionServiceInput: ExecutionServiceInput)
+ : Mono<ResponseEntity<ExecutionServiceOutput>> = monoMdc {
+
+ if (executionServiceInput.actionIdentifiers.mode == ACTION_MODE_ASYNC) {
+ throw IllegalStateException("Can't process async request through the REST endpoint. Use gRPC for async processing.")
+ }
+ val processResult = executionServiceHandler.doProcess(executionServiceInput)
+ ResponseEntity(processResult, determineHttpStatusCode(processResult.status.code))
+ }
}
diff --git a/ms/controllerblueprints/modules/blueprint-core/src/main/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/MDCContext.kt b/ms/controllerblueprints/modules/blueprint-core/src/main/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/MDCContext.kt
new file mode 100644
index 000000000..001ec751e
--- /dev/null
+++ b/ms/controllerblueprints/modules/blueprint-core/src/main/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/MDCContext.kt
@@ -0,0 +1,50 @@
+/*
+ * Copyright © 2018-2019 AT&T Intellectual Property.
+ *
+ * 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 org.onap.ccsdk.cds.controllerblueprints.core
+
+import kotlinx.coroutines.ThreadContextElement
+import org.slf4j.MDC
+import kotlin.coroutines.AbstractCoroutineContextElement
+import kotlin.coroutines.CoroutineContext
+
+typealias MDCContextMap = Map<String, String>?
+
+class MDCContext(private val contextMap: MDCContextMap = MDC.getCopyOfContextMap()) :
+ ThreadContextElement<MDCContextMap>, AbstractCoroutineContextElement(Key) {
+ /**
+ * Key of [MDCContext] in [CoroutineContext].
+ */
+ companion object Key : CoroutineContext.Key<MDCContext>
+
+ override fun updateThreadContext(context: CoroutineContext): MDCContextMap {
+ val oldState = MDC.getCopyOfContextMap()
+ setCurrent(contextMap)
+ return oldState
+ }
+
+ override fun restoreThreadContext(context: CoroutineContext, oldState: MDCContextMap) {
+ setCurrent(oldState)
+ }
+
+ private fun setCurrent(contextMap: MDCContextMap) {
+ if (contextMap == null) {
+ MDC.clear()
+ } else {
+ MDC.setContextMap(contextMap)
+ }
+ }
+} \ No newline at end of file
diff --git a/ms/controllerblueprints/modules/blueprint-core/src/test/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/MDCContextTest.kt b/ms/controllerblueprints/modules/blueprint-core/src/test/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/MDCContextTest.kt
new file mode 100644
index 000000000..2ddb4503d
--- /dev/null
+++ b/ms/controllerblueprints/modules/blueprint-core/src/test/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/MDCContextTest.kt
@@ -0,0 +1,56 @@
+/*
+ * Copyright © 2018-2019 AT&T Intellectual Property.
+ *
+ * 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 org.onap.ccsdk.cds.controllerblueprints.core
+
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.runBlocking
+import org.junit.After
+import org.junit.Before
+import org.slf4j.MDC
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class MDCContextTest {
+ val log = logger(MDCContextTest::class)
+ @Before
+ fun setup() {
+ MDC.clear()
+ }
+
+ @After
+ fun tearDow() {
+ MDC.clear()
+ }
+
+ @Test
+ fun testContextCanBePassedBetweenCoroutines() {
+ MDC.put(BluePrintConstants.RESPONSE_HEADER_TRANSACTION_ID, "12345")
+ runBlocking {
+ GlobalScope.launch {
+ assertEquals(null, MDC.get(BluePrintConstants.RESPONSE_HEADER_TRANSACTION_ID))
+ }
+ launch(MDCContext()) {
+ assertEquals("12345", MDC.get(BluePrintConstants.RESPONSE_HEADER_TRANSACTION_ID),
+ "couldn't get request id")
+
+ MDC.put("client_id", "client-1")
+ assertEquals("client-1", MDC.get("client_id"), "couldn't get client id")
+ }
+ }
+ }
+} \ No newline at end of file