1 files changed, 86 insertions, 0 deletions
diff --git a/java/src/main/java/org/whispersystems/libaxolotl/logging/Log.java b/java/src/main/java/org/whispersystems/libaxolotl/logging/Log.java
new file mode 100644
index 00000000..22db9baf
--- /dev/null
+++ b/java/src/main/java/org/whispersystems/libaxolotl/logging/Log.java
@@ -0,0 +1,86 @@
+package org.whispersystems.libaxolotl.logging;
+
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.net.UnknownHostException;
+
+public class Log {
+
+  private Log() {}
+
+  public static void v(String tag, String msg) {
+    log(AxolotlLogger.VERBOSE, tag, msg);
+  }
+
+  public static void v(String tag, String msg, Throwable tr) {
+    log(AxolotlLogger.VERBOSE, tag, msg + '\n' + getStackTraceString(tr));
+  }
+
+  public static void d(String tag, String msg) {
+    log(AxolotlLogger.DEBUG, tag, msg);
+  }
+
+  public static void d(String tag, String msg, Throwable tr) {
+    log(AxolotlLogger.DEBUG, tag, msg + '\n' + getStackTraceString(tr));
+  }
+
+  public static void i(String tag, String msg) {
+    log(AxolotlLogger.INFO, tag, msg);
+  }
+
+  public static void i(String tag, String msg, Throwable tr) {
+    log(AxolotlLogger.INFO, tag, msg + '\n' + getStackTraceString(tr));
+  }
+
+  public static void w(String tag, String msg) {
+    log(AxolotlLogger.WARN, tag, msg);
+  }
+
+  public static void w(String tag, String msg, Throwable tr) {
+    log(AxolotlLogger.WARN, tag, msg + '\n' + getStackTraceString(tr));
+  }
+
+  public static void w(String tag, Throwable tr) {
+    log(AxolotlLogger.WARN, tag, getStackTraceString(tr));
+  }
+
+  public static void e(String tag, String msg) {
+    log(AxolotlLogger.ERROR, tag, msg);
+  }
+
+  public static void e(String tag, String msg, Throwable tr) {
+    log(AxolotlLogger.ERROR, tag, msg + '\n' + getStackTraceString(tr));
+  }
+
+  private static String getStackTraceString(Throwable tr) {
+    if (tr == null) {
+      return "";
+    }
+
+    // This is to reduce the amount of log spew that apps do in the non-error
+    // condition of the network being unavailable.
+    Throwable t = tr;
+    while (t != null) {
+      if (t instanceof UnknownHostException) {
+        return "";
+      }
+      t = t.getCause();
+    }
+
+    StringWriter sw = new StringWriter();
+    PrintWriter pw = new PrintWriter(sw);
+    tr.printStackTrace(pw);
+    pw.flush();
+    return sw.toString();
+  }
+
+  private static void log(int priority, String tag, String msg) {
+    AxolotlLogger logger = AxolotlLoggerProvider.getProvider();
+
+    if (logger != null) {
+      logger.log(priority, tag, msg);
+    }
+  }
+
+
+}