org.springframework.boot.SpringApplicationRunListeners.java Source code

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Here is the source code for org.springframework.boot.SpringApplicationRunListeners.java

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/*
 * Copyright 2012-2015 the original author or authors.
 *
 * 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 org.springframework.boot;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.apache.commons.logging.Log;

import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.util.ReflectionUtils;

/**
 * A collection of {@link SpringApplicationRunListener}.
 *
 * @author Phillip Webb
 */
class SpringApplicationRunListeners {

    private final Log log;

    private final List<SpringApplicationRunListener> listeners;

    SpringApplicationRunListeners(Log log, Collection<? extends SpringApplicationRunListener> listeners) {
        this.log = log;
        this.listeners = new ArrayList<SpringApplicationRunListener>(listeners);
    }

    public void started() {
        for (SpringApplicationRunListener listener : this.listeners) {
            listener.started();
        }
    }

    public void environmentPrepared(ConfigurableEnvironment environment) {
        for (SpringApplicationRunListener listener : this.listeners) {
            listener.environmentPrepared(environment);
        }
    }

    public void contextPrepared(ConfigurableApplicationContext context) {
        for (SpringApplicationRunListener listener : this.listeners) {
            listener.contextPrepared(context);
        }
    }

    public void contextLoaded(ConfigurableApplicationContext context) {
        for (SpringApplicationRunListener listener : this.listeners) {
            listener.contextLoaded(context);
        }
    }

    public void finished(ConfigurableApplicationContext context, Throwable exception) {
        for (SpringApplicationRunListener listener : this.listeners) {
            callFinishedListener(listener, context, exception);
        }
    }

    private void callFinishedListener(SpringApplicationRunListener listener, ConfigurableApplicationContext context,
            Throwable exception) {
        try {
            listener.finished(context, exception);
        } catch (Throwable ex) {
            if (exception == null) {
                ReflectionUtils.rethrowRuntimeException(ex);
            }
            if (this.log.isDebugEnabled()) {
                this.log.error("Error handling failed", ex);
            } else {
                String message = ex.getMessage();
                message = (message == null ? "no error message" : message);
                this.log.warn("Error handling failed (" + message + ")");
            }
        }
    }

}