Added some tools for DCAE CBS removal

[holmes/common.git] / holmes-actions / src / main / java / org / onap / holmes / common / utils / FileUtils.java

diff --git a/holmes-actions/src/main/java/org/onap/holmes/common/utils/FileUtils.java b/holmes-actions/src/main/java/org/onap/holmes/common/utils/FileUtils.java
new file mode 100644 (file)
index 0000000..cf5de1c
--- /dev/null
+++ b/holmes-actions/src/main/java/org/onap/holmes/common/utils/FileUtils.java
@@ -0,0 +1,49 @@
+/**
+ * Copyright 2021 ZTE Corporation.
+ * <p>
+ * 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.holmes.common.utils;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.BufferedReader;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
+
+public class FileUtils {
+
+    final static private Logger LOGGER = LoggerFactory.getLogger(FileUtils.class);
+
+    static public String readTextFile(String path) {
+        try {
+            BufferedReader br = new BufferedReader(new FileReader(path));
+            StringBuilder sb = new StringBuilder();
+            String line;
+            while ((line = br.readLine()) != null) {
+                sb.append(line);
+            }
+            return sb.toString();
+        } catch (FileNotFoundException e) {
+            LOGGER.warn("No file found: {}", path);
+        } catch (IOException e) {
+            LOGGER.error(String.format("Failed to read file contents from '%s'.", path), e);
+        } catch (Exception e) {
+            LOGGER.warn("Unknown exception occurred!", e);
+        }
+        return null;
+    }
+}