1 files changed, 62 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dcae/common/publishing/VavrUtils.java b/src/main/java/org/onap/dcae/common/publishing/VavrUtils.java
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index 00000000..e1eae247
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+++ b/src/main/java/org/onap/dcae/common/publishing/VavrUtils.java
@@ -0,0 +1,62 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * org.onap.dcaegen2.collectors.ves
+ * ================================================================================
+ * Copyright (C) 2018 Nokia. All rights reserved.
+ * ================================================================================
+ * 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.common.publishing;
+
+import io.vavr.API;
+import io.vavr.API.Match.Case;
+import java.util.function.Consumer;
+import org.slf4j.Logger;
+
+import static io.vavr.API.$;
+
+/**
+ * @author Pawel Szalapski (pawel.szalapski@nokia.com)
+ */
+public final class VavrUtils {
+
+    private VavrUtils() {
+        // utils aggregator
+    }
+
+    /**
+     * Shortcut for 'string interpolation'
+     */
+    public static String f(String msg, Object... args) {
+        return String.format(msg, args);
+    }
+
+    /**
+     * Wrap failure with a more descriptive message of what has failed and chain original cause. Used to provide a
+     * context for errors instead of raw exception.
+     */
+    public static Case<Throwable, Throwable> enhanceError(String msg) {
+        return API.Case($(), e -> new RuntimeException(msg, e));
+    }
+
+    public static Case<Throwable, Throwable> enhanceError(String pattern, Object... arguments) {
+        return API.Case($(), e -> new RuntimeException(f(pattern, arguments), e));
+    }
+
+    public static Consumer<Throwable> logError(Logger withLogger) {
+        return e -> withLogger.error(e.getMessage(), e);
+    }
+
+
+}