inti.ws.spring.resource.index.IndexConfig.java Source code

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Here is the source code for inti.ws.spring.resource.index.IndexConfig.java

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/**
 * Copyright 2012 the project-owners
 *
 *    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 inti.ws.spring.resource.index;

import inti.ws.spring.resource.FilteredWebResource;
import inti.ws.spring.resource.config.ConfigParser;
import inti.ws.spring.resource.config.ConfigParserSettings;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.inject.Inject;
import javax.servlet.ServletContext;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

@Component
@Scope("prototype")
public class IndexConfig implements ConfigParser<FilteredWebResource> {

    private static final Logger LOGGER = LoggerFactory.getLogger(IndexConfig.class);
    private static final Pattern DEPENDENCY_SCANNER = Pattern.compile("\\$(\\w+):(.+)");

    public static class IndexBean {

        String file;
        List<String> dependencies;
        Map<String, String> parameters;

        public List<String> getDependencies() {
            return dependencies;
        }

        public void setDependencies(List<String> dependencies) {
            this.dependencies = dependencies;
        }

        public String getFile() {
            return file;
        }

        public void setFile(String file) {
            this.file = file;
        }

        public Map<String, String> getParameters() {
            return parameters;
        }

        public void setParameters(Map<String, String> parameters) {
            this.parameters = parameters;
        }

    }

    @Inject
    ServletContext ctx;
    protected ConfigParserSettings settings;

    @Override
    public Map<String, FilteredWebResource> instanceWebResources(ObjectMapper mapper, JsonNode node)
            throws Exception {
        return parseIndex(mapper.convertValue(node, IndexBean.class));
    }

    @Override
    public void configureWebResources(ObjectMapper mapper, JsonNode node,
            Map<String, FilteredWebResource> resources, Map<String, Map<String, FilteredWebResource>> resourceStack)
            throws Exception {
        IndexBean indexBean = mapper.convertValue(node, IndexBean.class);
        Entry<String, FilteredWebResource> entry = resources.entrySet().iterator().next();
        FilteredWebResource index = entry.getValue();
        Matcher matcher;
        String domain;
        String resource;
        Object value;

        if (indexBean.getDependencies() != null) {

            for (String dependency : indexBean.getDependencies()) {
                matcher = DEPENDENCY_SCANNER.matcher(dependency);

                LOGGER.debug("configureWebResources - dependency={}", dependency);
                if (matcher.matches()) {
                    domain = matcher.group(1);
                    resource = matcher.group(2);

                    LOGGER.debug("configureWebResources - domain={}, resource={}, resourceStack={}",
                            new Object[] { domain, resource, resourceStack });
                    if (resourceStack.containsKey(domain)) {
                        if (resourceStack.get(domain).containsKey(resource)) {
                            index.getDependencies().add(resourceStack.get(domain).get(resource));
                        }
                    }
                }
            }

        }

        if (indexBean.getParameters() != null) {

            for (Map.Entry<String, String> parameter : indexBean.getParameters().entrySet()) {
                matcher = DEPENDENCY_SCANNER.matcher(parameter.getValue());
                value = "";

                if (matcher.matches()) {
                    domain = matcher.group(1);
                    resource = matcher.group(2);

                    if (resourceStack.containsKey(domain)) {
                        if (resourceStack.get(domain).containsKey(resource)) {
                            value = resourceStack.get(domain).get(resource);
                        }
                    }
                } else {
                    value = parameter.getValue();
                }
                index.getParameters().put(parameter.getKey(), value);
            }

        }

        LOGGER.debug("configureWebResources - index.getParameters()={}, index.getDependencies()={}",
                index.getParameters(), index.getDependencies());
    }

    protected Map<String, FilteredWebResource> parseIndex(IndexBean indexBean) throws Exception {
        FilteredWebResource index;
        Map<String, FilteredWebResource> resources = new HashMap<>();

        if (indexBean != null) {

            index = new FilteredWebResource(ctx, indexBean.getFile(), "/index.html");
            resources.put("/index.html", index);

        }

        return resources;
    }

    @Override
    public ConfigParserSettings getConfigParserSettings() {
        return settings;
    }

    @Override
    public void setConfigParserSettings(ConfigParserSettings settings) {
        this.settings = settings;
    }

}