1 files changed, 179 insertions, 0 deletions
diff --git a/java/com/android/voicemailomtp/VvmLog.java b/java/com/android/voicemailomtp/VvmLog.java
new file mode 100644
index 000000000..2add66a53
--- /dev/null
+++ b/java/com/android/voicemailomtp/VvmLog.java
@@ -0,0 +1,179 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * 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 com.android.voicemailomtp;
+
+import android.util.Log;
+import com.android.voicemailomtp.utils.IndentingPrintWriter;
+import java.io.FileDescriptor;
+import java.io.PrintWriter;
+import java.util.ArrayDeque;
+import java.util.Calendar;
+import java.util.Deque;
+import java.util.Iterator;
+
+/**
+ * Helper methods for adding to OMTP visual voicemail local logs.
+ */
+public class VvmLog {
+
+    private static final int MAX_OMTP_VVM_LOGS = 100;
+
+    private static final LocalLog sLocalLog = new LocalLog(MAX_OMTP_VVM_LOGS);
+
+    public static void log(String tag, String log) {
+        sLocalLog.log(tag + ": " + log);
+    }
+
+    public static void dump(FileDescriptor fd, PrintWriter printwriter, String[] args) {
+        IndentingPrintWriter indentingPrintWriter = new IndentingPrintWriter(printwriter, "  ");
+        indentingPrintWriter.increaseIndent();
+        sLocalLog.dump(fd, indentingPrintWriter, args);
+        indentingPrintWriter.decreaseIndent();
+    }
+
+    public static int e(String tag, String log) {
+        log(tag, log);
+        return Log.e(tag, log);
+    }
+
+    public static int e(String tag, String log, Throwable e) {
+        log(tag, log + " " + e);
+        return Log.e(tag, log, e);
+    }
+
+    public static int w(String tag, String log) {
+        log(tag, log);
+        return Log.w(tag, log);
+    }
+
+    public static int w(String tag, String log, Throwable e) {
+        log(tag, log + " " + e);
+        return Log.w(tag, log, e);
+    }
+
+    public static int i(String tag, String log) {
+        log(tag, log);
+        return Log.i(tag, log);
+    }
+
+    public static int i(String tag, String log, Throwable e) {
+        log(tag, log + " " + e);
+        return Log.i(tag, log, e);
+    }
+
+    public static int d(String tag, String log) {
+        log(tag, log);
+        return Log.d(tag, log);
+    }
+
+    public static int d(String tag, String log, Throwable e) {
+        log(tag, log + " " + e);
+        return Log.d(tag, log, e);
+    }
+
+    public static int v(String tag, String log) {
+        log(tag, log);
+        return Log.v(tag, log);
+    }
+
+    public static int v(String tag, String log, Throwable e) {
+        log(tag, log + " " + e);
+        return Log.v(tag, log, e);
+    }
+
+    public static int wtf(String tag, String log) {
+        log(tag, log);
+        return Log.wtf(tag, log);
+    }
+
+    public static int wtf(String tag, String log, Throwable e) {
+        log(tag, log + " " + e);
+        return Log.wtf(tag, log, e);
+    }
+
+    /**
+     * Redact personally identifiable information for production users. If we are running in verbose
+     * mode, return the original string, otherwise return a SHA-1 hash of the input string.
+     */
+    public static String pii(Object pii) {
+        if (pii == null) {
+            return String.valueOf(pii);
+        }
+        return "[PII]";
+    }
+
+    public static class LocalLog {
+
+        private final Deque<String> mLog;
+        private final int mMaxLines;
+
+        public LocalLog(int maxLines) {
+            mMaxLines = Math.max(0, maxLines);
+            mLog = new ArrayDeque<>(mMaxLines);
+        }
+
+        public void log(String msg) {
+            if (mMaxLines <= 0) {
+                return;
+            }
+            Calendar c = Calendar.getInstance();
+            c.setTimeInMillis(System.currentTimeMillis());
+            append(String.format("%tm-%td %tH:%tM:%tS.%tL - %s", c, c, c, c, c, c, msg));
+        }
+
+        private synchronized void append(String logLine) {
+            while (mLog.size() >= mMaxLines) {
+                mLog.remove();
+            }
+            mLog.add(logLine);
+        }
+
+        public synchronized void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
+            Iterator<String> itr = mLog.iterator();
+            while (itr.hasNext()) {
+                pw.println(itr.next());
+            }
+        }
+
+        public synchronized void reverseDump(FileDescriptor fd, PrintWriter pw, String[] args) {
+            Iterator<String> itr = mLog.descendingIterator();
+            while (itr.hasNext()) {
+                pw.println(itr.next());
+            }
+        }
+
+        public static class ReadOnlyLocalLog {
+
+            private final LocalLog mLog;
+
+            ReadOnlyLocalLog(LocalLog log) {
+                mLog = log;
+            }
+
+            public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
+                mLog.dump(fd, pw, args);
+            }
+
+            public void reverseDump(FileDescriptor fd, PrintWriter pw, String[] args) {
+                mLog.reverseDump(fd, pw, args);
+            }
+        }
+
+        public ReadOnlyLocalLog readOnlyLocalLog() {
+            return new ReadOnlyLocalLog(this);
+        }
+    }
+}