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

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Here is the source code for com.google.gwt.logging.client.SimpleRemoteLogHandler.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 com.google.gwt.core.client.GWT;
import com.google.gwt.logging.shared.RemoteLoggingService;
import com.google.gwt.logging.shared.RemoteLoggingServiceAsync;
import com.google.gwt.user.client.rpc.AsyncCallback;

import java.util.logging.Level;
import java.util.logging.LogRecord;

/**
 * A very simple handler which sends messages to the server via GWT RPC to be
 * logged. Note that this logger does not do any intelligent batching of RPC's,
 * nor does it disable when the RPC calls fail repeatedly.
 */
public final class SimpleRemoteLogHandler extends RemoteLogHandlerBase {
    class DefaultCallback implements AsyncCallback<String> {
        public void onFailure(Throwable caught) {
            wireLogger.log(Level.SEVERE, "Remote logging failed: ", caught);
        }

        public void onSuccess(String result) {
            if (result != null) {
                wireLogger.severe("Remote logging failed: " + result);
            } else {
                wireLogger.finest("Remote logging message acknowledged");
            }
        }
    }

    private AsyncCallback<String> callback;
    private RemoteLoggingServiceAsync service;

    public SimpleRemoteLogHandler() {
        service = (RemoteLoggingServiceAsync) GWT.create(RemoteLoggingService.class);
        this.callback = new DefaultCallback();
    }

    @Override
    public void publish(LogRecord record) {
        if (isLoggable(record)) {
            service.logOnServer(record, callback);
        }
    }
}