112 lines
4.2 KiB
Java
112 lines
4.2 KiB
Java
/*-
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* ~~~~~~licensing~~~~~~
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* config-plugin
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* ==========
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* Copyright (C) 2020 - 2023 EmDev LLC
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* ==========
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* You may not use this file except in accordance with the License Terms of the Copyright
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* Holder located at: https://entaxy.ru/eula . All copyrights, all intellectual property
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* rights to the Software and any copies are the property of the Copyright Holder. Unless
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* it is explicitly allowed the Copyright Holder, the User is prohibited from using the
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* Software for commercial purposes to provide services to third parties.
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*
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* The Copyright Holder hereby declares that the Software is provided on an "AS IS".
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* Under no circumstances does the Copyright Holder guarantee or promise that the
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* Software provided by him will be suitable or not suitable for the specific purposes
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* of the User, that the Software will meet all commercial and personal subjective
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* expectations of the User, that the Software will work properly, without technical
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* errors, quickly and uninterruptedly.
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*
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* Under no circumstances shall the Copyright Holder or its Affiliates is not liable
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* to the User for any direct or indirect losses of the User, his expenses or actual
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* damage, including, downtime; loss of bussines; lost profit; lost earnings; loss
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* or damage to data, property, etc.
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* ~~~~~~/licensing~~~~~~
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*/
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package ru.entaxy.platform.base.config;
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import java.io.IOException;
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import java.util.Dictionary;
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import java.util.Enumeration;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import org.osgi.framework.ServiceReference;
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import org.osgi.service.cm.Configuration;
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import org.osgi.service.cm.ConfigurationAdmin;
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import org.osgi.service.cm.ConfigurationPlugin;
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import org.osgi.service.component.annotations.Component;
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import org.osgi.service.component.annotations.Reference;
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import org.osgi.service.component.annotations.ReferenceCardinality;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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*
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* Configuration plugin providing resolving references from one config to others
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* in a form $PID_OF_OTHER_CONFIG{PROPERTY_NAME}
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* e.g. $org.ops4j.pax.url.mvn{org.ops4j.pax.url.mvn.localRepository}
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*
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* If pid or property not found no changes are made
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*
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* @author sstarovoytenkov
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*
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*/
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@Component(service = {ConfigurationPlugin.class}, immediate = true,
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property = {
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ConfigurationPlugin.CM_RANKING + "=100"
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, "config.plugin.id=ConfigLookupConfigurationPlugin"})
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public class ConfigLookupConfigurationPlugin implements ConfigurationPlugin {
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private static final Logger log = LoggerFactory.getLogger(ConfigLookupConfigurationPlugin.class);
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@Reference(cardinality = ReferenceCardinality.MANDATORY)
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protected ConfigurationAdmin configurationAdmin;
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@Override
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public void modifyConfiguration(ServiceReference<?> arg0, Dictionary<String, Object> properties) {
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for (Enumeration<String> keys = properties.keys(); keys.hasMoreElements(); ) {
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String key = keys.nextElement();
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Object val = properties.get(key);
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if (val instanceof String) {
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String text = (String)val;
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String newValue = (String)val;
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Pattern pattern = Pattern.compile("\\$([^\\{\\}])+\\{.+?\\}");
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Matcher matcher = pattern.matcher(text);
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while (matcher.find()) {
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log.debug("FOUND :: " + text.substring(matcher.start(), matcher.end()));
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String placeholder = text.substring(matcher.start(), matcher.end());
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String pid = placeholder.substring(1, placeholder.indexOf("{"));
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String propName = placeholder.substring(placeholder.indexOf("{")+1
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, placeholder.indexOf("}"));
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log.debug("PARSED :: " + pid + ":" + propName);
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Configuration conf;
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try {
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conf = configurationAdmin.getConfiguration(pid);
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if (conf != null) {
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Dictionary<String, Object> props = conf.getProperties();
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Object value = props.get(propName);
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log.debug("VALUE :: " + placeholder + " = " + value);
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if (value != null) {
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newValue = newValue.replace(placeholder, (String)value);
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log.debug("NEW VALUE :: " + placeholder + " = " + newValue);
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}
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}
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} catch (IOException e) {
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log.error("Error with pid: " + pid, e);
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}
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}
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properties.put(key, newValue);
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}
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}
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}
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}
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