com.google.gwt.logging.client.RemoteLogHandlerBase.java Source code

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Here is the source code for com.google.gwt.logging.client.RemoteLogHandlerBase.java

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/*
 * Copyright 2010 Google Inc.
 * 
 * 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.google.gwt.logging.client;

import java.util.ArrayList;
import java.util.List;
import java.util.logging.Handler;
import java.util.logging.LogRecord;
import java.util.logging.Logger;

/**
 * Base class for Logging handlers that send records to the server.
 */
public abstract class RemoteLogHandlerBase extends Handler {
    protected static final String WIRE_LOGGER_NAME = "WireActivityLogger";

    // A separate logger for wire activity, which does not get logged
    // by the remote log handler, so we avoid infinite loops.
    protected static Logger wireLogger = Logger.getLogger(WIRE_LOGGER_NAME);

    private boolean closed = false;

    private List<String> excludedLoggerNames;

    protected RemoteLogHandlerBase() {
        excludedLoggerNames = new ArrayList<String>();
        excludedLoggerNames.add(WIRE_LOGGER_NAME);
    }

    protected RemoteLogHandlerBase(List<String> excludedLoggerNames) {
        this.excludedLoggerNames = excludedLoggerNames;
        this.excludedLoggerNames.add(WIRE_LOGGER_NAME);
    }

    @Override
    public void close() {
        closed = true;
    }

    @Override
    public void flush() {
        // No action needed
    }

    @Override
    public boolean isLoggable(LogRecord record) {
        // The number of excludedLoggerNames is expected to be small (2-3 at most)
        // but in theory, clients could put lots of names in the list.
        // TODO(unnurg): consider implementing this search with a map rather than
        // a list, depending on the JS size implications of including a map.
        return (!closed && super.isLoggable(record) && !excludedLoggerNames.contains(record.getLoggerName()));
    }
}