org.apache.archiva.rest.services.DefaultCommonServices.java Source code

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Here is the source code for org.apache.archiva.rest.services.DefaultCommonServices.java

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package org.apache.archiva.rest.services;
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

import org.apache.archiva.redback.components.scheduler.CronExpressionValidator;
import org.apache.archiva.redback.rest.api.services.RedbackServiceException;
import org.apache.archiva.redback.rest.api.services.UtilServices;
import org.apache.archiva.rest.api.services.ArchivaRestServiceException;
import org.apache.archiva.rest.api.services.CommonServices;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;

import javax.annotation.PostConstruct;
import javax.inject.Inject;
import javax.ws.rs.core.Response;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @author Olivier Lamy
 */
@Service("commonServices#rest")
public class DefaultCommonServices implements CommonServices {

    private static final String RESOURCE_NAME = "org/apache/archiva/i18n/default";

    private Logger log = LoggerFactory.getLogger(getClass());

    @Inject
    private UtilServices utilServices;

    private Map<String, String> cachei18n = new ConcurrentHashMap<String, String>();

    @Inject
    protected CronExpressionValidator cronExpressionValidator;

    @PostConstruct
    public void init() throws ArchivaRestServiceException {

        // preload i18n en and fr
        getAllI18nResources("en");
        getAllI18nResources("fr");
    }

    @Override
    public String getI18nResources(String locale) throws ArchivaRestServiceException {
        Properties properties = new Properties();

        StringBuilder resourceName = new StringBuilder(RESOURCE_NAME);
        try {

            loadResource(properties, resourceName, locale);

        } catch (IOException e) {
            log.warn("skip error loading properties {}", resourceName.toString());
        }

        return fromProperties(properties);
    }

    private void loadResource(Properties properties, StringBuilder resourceName, String locale) throws IOException {
        // load default
        loadResource(properties, new StringBuilder(resourceName).append(".properties").toString(), locale);
        // if locale override with locale content
        if (StringUtils.isNotEmpty(locale)) {
            loadResource(properties,
                    new StringBuilder(resourceName).append("_" + locale).append(".properties").toString(), locale);
        }

    }

    private String fromProperties(final Properties properties) {
        StringBuilder output = new StringBuilder();

        for (Map.Entry<Object, Object> entry : properties.entrySet()) {
            output.append((String) entry.getKey()).append('=').append((String) entry.getValue());
            output.append('\n');
        }

        return output.toString();
    }

    private void loadResource(final Properties finalProperties, String resourceName, String locale)
            throws IOException {
        Properties properties = new Properties();
        try (InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream(resourceName)) {
            if (is != null) {
                properties.load(is);
                finalProperties.putAll(properties);
            } else {
                if (!StringUtils.equalsIgnoreCase(locale, "en")) {
                    log.info("cannot load resource {}", resourceName);
                }
            }
        }
    }

    @Override
    public String getAllI18nResources(String locale) throws ArchivaRestServiceException {

        String cachedi18n = cachei18n.get(StringUtils.isEmpty(locale) ? "en" : StringUtils.lowerCase(locale));
        if (cachedi18n != null) {
            return cachedi18n;
        }

        try {

            Properties all = utilServices.getI18nProperties(locale);
            StringBuilder resourceName = new StringBuilder(RESOURCE_NAME);
            loadResource(all, resourceName, locale);

            String i18n = fromProperties(all);
            cachei18n.put(StringUtils.isEmpty(locale) ? "en" : StringUtils.lowerCase(locale), i18n);
            return i18n;
        } catch (IOException e) {
            throw new ArchivaRestServiceException(e.getMessage(),
                    Response.Status.INTERNAL_SERVER_ERROR.getStatusCode(), e);
        } catch (RedbackServiceException e) {
            throw new ArchivaRestServiceException(e.getMessage(), e.getHttpErrorCode(), e);
        }
    }

    private void loadFromString(String propsStr, Properties properties) throws ArchivaRestServiceException {
        try (InputStream inputStream = new ByteArrayInputStream(propsStr.getBytes())) {
            properties.load(inputStream);
        } catch (IOException e) {
            throw new ArchivaRestServiceException(e.getMessage(),
                    Response.Status.INTERNAL_SERVER_ERROR.getStatusCode(), e);
        }
    }

    @Override
    public Boolean validateCronExpression(String cronExpression) throws ArchivaRestServiceException {
        return cronExpressionValidator.validate(cronExpression);
    }
}