LogMessageFormatter.java

/*******************************************************************************
 * Copyright (c) 2012-2016 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.plugin.docker.client;

/**
 * Format/beautify string representation of log messages returned by docker.
 *
 * @author andrew00x
 * @author Alexander Garagatyi
 */
public interface LogMessageFormatter extends MessageFormatter<LogMessage> {
    String format(LogMessage logMessage);

    LogMessageFormatter DEFAULT = new LogMessageFormatter() {
        @Override
        public String format(LogMessage logMessage) {
            final StringBuilder sb = new StringBuilder();
            final LogMessage.Type type = logMessage.getType();
            switch (type) {
                case STDOUT:
                    sb.append("[STDOUT]");
                    break;
                case STDERR:
                    sb.append("[STDERR]");
                    break;
                case DOCKER:
                    sb.append("[DOCKER]");
                    break;
            }
            final String content = logMessage.getContent();
            if (content != null) {
                sb.append(' ');
                sb.append(content);
            }
            return sb.toString();
        }
    };
}