1 files changed, 41 insertions, 0 deletions
diff --git a/ms/blueprintsprocessor/modules/blueprints/blueprint-core/src/main/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/utils/BluePrintIOUtils.kt b/ms/blueprintsprocessor/modules/blueprints/blueprint-core/src/main/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/utils/BluePrintIOUtils.kt
new file mode 100644
index 000000000..d29fed0d9
--- /dev/null
+++ b/ms/blueprintsprocessor/modules/blueprints/blueprint-core/src/main/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/utils/BluePrintIOUtils.kt
@@ -0,0 +1,41 @@
+/*
+ *  Copyright © 2019 IBM.
+ *
+ *  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.utils
+
+object BluePrintIOUtils {
+
+    suspend fun <T> retry(
+        times: Int = 1,
+        initialDelay: Long = 0,
+        delay: Long = 1000,
+        block: suspend (Int) -> T,
+        exceptionBlock: (e: Exception) -> Unit
+    ): T {
+        var currentDelay = initialDelay
+        val currentTimes = times - 1
+        repeat(currentTimes) { count ->
+            try {
+                return block(count)
+            } catch (e: Exception) {
+                exceptionBlock(e)
+            }
+            kotlinx.coroutines.delay(currentDelay)
+            currentDelay = delay
+        }
+        return block(currentTimes)
+    }
+}