logger

Author: filipesperandio

src/main/java/org/sonarlint/cli/util/Logger.java

@@ -0,0 +1,98 @@
+/*
+ * SonarLint CLI
+ * Copyright (C) 2016-2017 SonarSource SA
+ * mailto:info AT sonarsource DOT com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+package org.sonarlint.cli.util;
+
+import java.io.PrintStream;
+
+public class Logger {
+  private static volatile Logger instance;
+  private boolean debugEnabled = false;
+  private boolean displayStackTrace = false;
+  private PrintStream stdOut;
+  private PrintStream stdErr;
+
+  private Logger() {
+    this.stdErr = System.err;
+    this.stdOut = System.out;
+  }
+
+  public Logger(PrintStream stdOut, PrintStream stdErr) {
+    this.stdErr = stdErr;
+    this.stdOut = stdOut;
+  }
+
+  public static Logger get() {
+    if (instance == null) {
+      instance = new Logger();
+    }
+    return instance;
+  }
+
+  public static void set(PrintStream stdOut, PrintStream stdErr) {
+    get().stdOut = stdOut;
+    get().stdErr = stdErr;
+  }
+
+  public void setDebugEnabled(boolean debugEnabled) {
+    this.debugEnabled = debugEnabled;
+  }
+
+  public void setDisplayStackTrace(boolean displayStackTrace) {
+    this.displayStackTrace = displayStackTrace;
+  }
+
+  public boolean isDebugEnabled() {
+    return debugEnabled;
+  }
+
+  public void debug(String message) {
+    if (isDebugEnabled()) {
+      stdErr.println("DEBUG: " + message);
+    }
+  }
+
+  public void debug(String message, Throwable t) {
+    if (isDebugEnabled()) {
+      stdErr.println("DEBUG: " + message);
+      if (displayStackTrace) {
+        t.printStackTrace(stdErr);
+      }
+    }
+  }
+
+  public void info(String message) {
+    stdErr.println("INFO: " + message);
+  }
+
+  public void warn(String message) {
+    stdErr.println("WARN: " + message);
+  }
+
+  public void error(String message) {
+    stdErr.println("ERROR: " + message);
+  }
+
+  public void error(String message, Throwable t) {
+    stdErr.println("ERROR: " + message);
+    if (displayStackTrace) {
+      t.printStackTrace(stdErr);
+    }
+  }
+}