1 files changed, 77 insertions, 0 deletions
diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/http/ratpack.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/http/ratpack.kt
new file mode 100644
index 00000000..0282d0c7
--- /dev/null
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/http/ratpack.kt
@@ -0,0 +1,77 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.utils.http
+
+import arrow.core.Either
+import arrow.effects.IO
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import javax.json.Json
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since August 2018
+ */
+
+private val logger = Logger("org.onap.dcae.collectors.veshv.utils.arrow.ratpack")
+
+fun ratpack.http.Response.sendOrError(action: IO<Unit>) {
+    sendAndHandleErrors(action.map {
+        Response(
+                HttpStatus.OK,
+                Content(
+                        ContentType.JSON,
+                        Json.createObjectBuilder().add("response", "Request accepted").build()))
+    })
+}
+
+fun <A> ratpack.http.Response.sendEitherErrorOrResponse(response: Either<A, Response>) {
+    when(response) {
+        is Either.Left -> send(errorResponse(response.a.toString()))
+        is Either.Right -> sendAndHandleErrors(IO.just(response.b))
+    }
+}
+
+fun ratpack.http.Response.sendAndHandleErrors(response: IO<Response>) {
+    response.attempt().unsafeRunSync().fold(
+            { err ->
+                logger.warn("Error occurred. Sending .", err)
+                val message = err.message
+                send(errorResponse(message))
+            },
+            ::send
+    )
+}
+
+private fun errorResponse(message: String?): Response {
+    return Response(
+            HttpStatus.INTERNAL_SERVER_ERROR,
+            Content(
+                    ContentType.JSON,
+                    Json.createObjectBuilder().add("error", message).build()))
+}
+
+fun ratpack.http.Response.send(response: Response) {
+    val respWithStatus = status(response.status.number)
+    response.content.apply {
+        respWithStatus.send(
+                type.value,
+                serializer.run { value.show() })
+    }
+}