Add remote service function execution.

Issue-ID: CCSDK-1875
Signed-off-by: Brinda Santh <bs2796@att.com>
Change-Id: I18279b1d2ff1a0b2962afa74fc616bfd99e93c91

1 files changed, 112 insertions, 0 deletions

diff --git a/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/services/execution/AbstractServiceFunction.kt b/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/services/execution/AbstractServiceFunction.kt
new file mode 100644
index 000000000..67ab9c4de
--- /dev/null
+++ b/ms/blueprintsprocessor/modules/services/execution-service/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/services/execution/AbstractServiceFunction.kt
@@ -0,0 +1,112 @@
+/*
+ * 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.services.execution
+
+import com.fasterxml.jackson.databind.JsonNode
+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.api.data.Status
+import org.onap.ccsdk.cds.controllerblueprints.common.api.EventType
+import org.onap.ccsdk.cds.controllerblueprints.core.BluePrintConstants
+import org.onap.ccsdk.cds.controllerblueprints.core.interfaces.BlueprintFunctionNode
+import org.onap.ccsdk.cds.controllerblueprints.core.jsonPathParse
+import org.onap.ccsdk.cds.controllerblueprints.core.logger
+import org.onap.ccsdk.cds.controllerblueprints.core.utils.JacksonUtils
+
+/** This implementation is used to build services, which doesn't need blueprints */
+abstract class AbstractServiceFunction : BlueprintFunctionNode<ExecutionServiceInput, ExecutionServiceOutput> {
+
+    @Transient
+    private val log = logger(AbstractServiceFunction::class)
+
+    lateinit var executionServiceInput: ExecutionServiceInput
+    var executionServiceOutput = ExecutionServiceOutput()
+    lateinit var processId: String
+    lateinit var actionName: String
+    lateinit var responseActionPayload: JsonNode
+
+    override fun getName(): String {
+        return actionName
+    }
+
+    override suspend fun prepareRequestNB(executionRequest: ExecutionServiceInput): ExecutionServiceInput {
+
+        this.executionServiceInput = executionRequest
+
+        actionName = executionRequest.actionIdentifiers.actionName
+        check(actionName.isNotEmpty()) { "couldn't get action name" }
+
+        processId = executionRequest.commonHeader.requestId
+        check(processId.isNotEmpty()) { "couldn't get process id for service action($actionName)" }
+
+        return executionRequest
+    }
+
+    override suspend fun applyNB(executionServiceInput: ExecutionServiceInput): ExecutionServiceOutput {
+        try {
+            prepareRequestNB(executionServiceInput)
+            processNB(executionServiceInput)
+        } catch (runtimeException: RuntimeException) {
+            log.error("failed in ${getName()} : ${runtimeException.message}", runtimeException)
+            recoverNB(runtimeException, executionServiceInput)
+        }
+        return prepareResponseNB()
+    }
+
+    override suspend fun prepareResponseNB(): ExecutionServiceOutput {
+        log.debug("Preparing Response...")
+        executionServiceOutput.commonHeader = executionServiceInput.commonHeader
+        executionServiceOutput.actionIdentifiers = executionServiceInput.actionIdentifiers
+        var status = Status()
+        try {
+            // Set the Response Payload
+            executionServiceOutput.payload = JacksonUtils.objectMapper.createObjectNode()
+            executionServiceOutput.payload.set("$actionName-response", responseActionPayload)
+            // Set the Default Step Status
+            status.eventType = EventType.EVENT_COMPONENT_EXECUTED.name
+        } catch (e: Exception) {
+            status.message = BluePrintConstants.STATUS_FAILURE
+            status.eventType = EventType.EVENT_COMPONENT_FAILURE.name
+        }
+        executionServiceOutput.status = status
+        return this.executionServiceOutput
+    }
+
+    fun setResponsePayloadForAction(actionPayload: JsonNode) {
+        this.responseActionPayload = actionPayload
+    }
+
+    /**
+     * Get Execution Input Payload data
+     */
+    fun requestPayload(): JsonNode? {
+        return executionServiceInput.payload
+    }
+
+    /**
+     * Get Execution Input payload action property with [expression]
+     * ex: requestPayloadActionProperty("data") will look for path "payload/<action-name>-request/data"
+     */
+    fun requestPayloadActionProperty(expression: String?): JsonNode? {
+        val requestExpression = if (expression.isNullOrBlank()) {
+            "$actionName-request"
+        } else {
+            "$actionName-request.$expression"
+        }
+        return executionServiceInput.payload.jsonPathParse(".$requestExpression")
+    }
+}
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