CrashlyticsTree.java

package com.novonetworks.eng.core.util;

/*
 * Created by orange on 2016-12-29.
 */

import android.util.Log;

import com.crashlytics.android.Crashlytics;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import timber.log.Timber;

public class CrashlyticsTree extends Timber.Tree {
    
    private static final String CRASHLYTICS_KEY_PRIORITY = "priority";
    private static final String CRASHLYTICS_KEY_TAG = "tag";
    private static final String CRASHLYTICS_KEY_MESSAGE = "message";

    private static final int CALL_STACK_INDEX = 6;
    private static final Pattern ANONYMOUS_CLASS = Pattern.compile("(\\$\\d+)+$");

    private String createStackElementTag(StackTraceElement element) {
        String tag = element.getClassName();
        Matcher m = ANONYMOUS_CLASS.matcher(tag);
        if (m.find()) {
            tag = m.replaceAll("");
        }
        return tag.substring(tag.lastIndexOf('.') + 1);
    }

    private String getClassNameTag() {
        StackTraceElement[] stackTrace = new Throwable().getStackTrace();
        if (stackTrace.length <= CALL_STACK_INDEX) {
            throw new IllegalStateException(
                    "Synthetic stacktrace didn't have enough elements: are you using proguard?");
        }
        return createStackElementTag(stackTrace[CALL_STACK_INDEX]);
    }

    @Override
    protected void log(int priority, String tag, String message, Throwable t) {

        if (tag == null) {
            tag = getClassNameTag();
        }

        Crashlytics.setInt(CRASHLYTICS_KEY_PRIORITY, priority);
        Crashlytics.setString(CRASHLYTICS_KEY_TAG, tag);
        Crashlytics.setString(CRASHLYTICS_KEY_MESSAGE, message);

        if (priority == Log.VERBOSE || priority == Log.DEBUG || priority == Log.INFO) {
            Crashlytics.log(priority, tag, message);
            return;
        }

        if (t == null) {
            Crashlytics.logException(new Exception(message));
        } else {
            Crashlytics.logException(t);
        }
    }
}