Add support for async REST

Change-Id: Ieb53cbd75c2e21355b153611f6490c1b2af6053b
Issue-ID: CCSDK-662
Signed-off-by: Alexis de Talhouët <adetalhouet89@gmail.com>

3 files changed, 48 insertions, 4 deletions

diff --git a/ms/blueprintsprocessor/modules/inbounds/selfservice-api/pom.xml b/ms/blueprintsprocessor/modules/inbounds/selfservice-api/pom.xml
index 7041dab3..5562df62 100644
--- a/ms/blueprintsprocessor/modules/inbounds/selfservice-api/pom.xml
+++ b/ms/blueprintsprocessor/modules/inbounds/selfservice-api/pom.xml
@@ -29,6 +29,10 @@
 
     <dependencies>
         <dependency>
+            <groupId>org.jetbrains.kotlinx</groupId>
+            <artifactId>kotlinx-coroutines-core</artifactId>
+        </dependency>
+        <dependency>
             <groupId>io.grpc</groupId>
             <artifactId>grpc-testing</artifactId>
         </dependency>
diff --git a/ms/blueprintsprocessor/modules/inbounds/selfservice-api/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/selfservice/api/ExecutionServiceController.kt b/ms/blueprintsprocessor/modules/inbounds/selfservice-api/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/selfservice/api/ExecutionServiceController.kt
index 35d4e67c..e4734c44 100644
--- a/ms/blueprintsprocessor/modules/inbounds/selfservice-api/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/selfservice/api/ExecutionServiceController.kt
+++ b/ms/blueprintsprocessor/modules/inbounds/selfservice-api/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/selfservice/api/ExecutionServiceController.kt
@@ -38,7 +38,6 @@ class ExecutionServiceController {
     @Autowired
     lateinit var executionServiceHandler: ExecutionServiceHandler
 
-
     @RequestMapping(path = ["/ping"], method = [RequestMethod.GET], produces = [MediaType.APPLICATION_JSON_VALUE])
     @ResponseBody
     fun ping(): Mono<String> {
@@ -58,8 +57,7 @@ class ExecutionServiceController {
     @RequestMapping(path = ["/process"], method = [RequestMethod.POST], produces = [MediaType.APPLICATION_JSON_VALUE])
     @ApiOperation(value = "Resolve Resource Mappings", notes = "Takes the blueprint information and process as per the payload")
     @ResponseBody
-    fun process(@RequestBody executionServiceInput: ExecutionServiceInput): Mono<ExecutionServiceOutput> {
-        val executionServiceOutput = executionServiceHandler.process(executionServiceInput)
-        return Mono.just(executionServiceOutput)
+    fun process(@RequestBody executionServiceInput: ExecutionServiceInput): ExecutionServiceOutput {
+        return executionServiceHandler.process(executionServiceInput)
     }
 }
diff --git a/ms/blueprintsprocessor/modules/inbounds/selfservice-api/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/selfservice/api/ExecutionServiceHandler.kt b/ms/blueprintsprocessor/modules/inbounds/selfservice-api/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/selfservice/api/ExecutionServiceHandler.kt
index 56903745..0b361d8a 100644
--- a/ms/blueprintsprocessor/modules/inbounds/selfservice-api/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/selfservice/api/ExecutionServiceHandler.kt
+++ b/ms/blueprintsprocessor/modules/inbounds/selfservice-api/src/main/kotlin/org/onap/ccsdk/apps/blueprintsprocessor/selfservice/api/ExecutionServiceHandler.kt
@@ -16,11 +16,18 @@
 
 package org.onap.ccsdk.apps.blueprintsprocessor.selfservice.api
 
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
 import org.onap.ccsdk.apps.blueprintsprocessor.core.BluePrintCoreConfiguration
+import org.onap.ccsdk.apps.blueprintsprocessor.core.api.data.ACTION_MODE_ASYNC
+import org.onap.ccsdk.apps.blueprintsprocessor.core.api.data.ACTION_MODE_SYNC
 import org.onap.ccsdk.apps.blueprintsprocessor.core.api.data.ExecutionServiceInput
 import org.onap.ccsdk.apps.blueprintsprocessor.core.api.data.ExecutionServiceOutput
+import org.onap.ccsdk.apps.blueprintsprocessor.core.api.data.Status
 import org.onap.ccsdk.apps.blueprintsprocessor.selfservice.api.utils.saveCBAFile
 import org.onap.ccsdk.apps.blueprintsprocessor.services.workflow.BlueprintDGExecutionService
+import org.onap.ccsdk.apps.controllerblueprints.core.BluePrintConstants
 import org.onap.ccsdk.apps.controllerblueprints.core.BluePrintException
 import org.onap.ccsdk.apps.controllerblueprints.core.interfaces.BluePrintCatalogService
 import org.onap.ccsdk.apps.controllerblueprints.core.utils.BluePrintFileUtils
@@ -50,7 +57,20 @@ class ExecutionServiceHandler(private val bluePrintCoreConfiguration: BluePrintC
     }
 
     fun process(executionServiceInput: ExecutionServiceInput): ExecutionServiceOutput {
+        return when {
+            executionServiceInput.actionIdentifiers.mode == ACTION_MODE_ASYNC -> {
+                GlobalScope.launch(Dispatchers.Default) {
+                    // TODO post result in DMaaP
+                    val executionServiceOutput = doProcess(executionServiceInput)
+                }
+                response(executionServiceInput)
+            }
+            executionServiceInput.actionIdentifiers.mode == ACTION_MODE_SYNC -> doProcess(executionServiceInput)
+            else -> response(executionServiceInput, true)
+        }
+    }
 
+    fun doProcess(executionServiceInput: ExecutionServiceInput): ExecutionServiceOutput {
         val requestId = executionServiceInput.commonHeader.requestId
         log.info("processing request id $requestId")
 
@@ -66,4 +86,26 @@ class ExecutionServiceHandler(private val bluePrintCoreConfiguration: BluePrintC
 
         return blueprintDGExecutionService.executeDirectedGraph(blueprintRuntimeService, executionServiceInput)
     }
+
+    fun response(executionServiceInput: ExecutionServiceInput, failure: Boolean = false): ExecutionServiceOutput {
+        val executionServiceOutput = ExecutionServiceOutput()
+        executionServiceOutput.commonHeader = executionServiceInput.commonHeader
+        executionServiceOutput.actionIdentifiers = executionServiceInput.actionIdentifiers
+        executionServiceOutput.payload = executionServiceInput.payload
+
+        val status = Status()
+        if (failure) {
+            status.eventType = "EVENT-COMPONENT-FAILURE"
+            status.code = 500
+            status.message = BluePrintConstants.STATUS_FAILURE
+        } else {
+            status.eventType = "EVENT-COMPONENT-PROCESSING"
+            status.code = 200
+            status.message = BluePrintConstants.STATUS_PROCESSING
+        }
+
+        executionServiceOutput.status = status
+
+        return executionServiceOutput
+    }
 }
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