*/
package org.codelibs.fess.sso.oic;

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.codelibs.core.io.FileUtil;
import org.codelibs.core.misc.DynamicProperties;
import org.codelibs.fess.app.web.base.login.ActionResponseCredential;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;

            if (file.isDirectory()) {
                traverseFileSystem(rootDir, file, handler);
            } else {
                final int pos = FileUtil.getCanonicalPath(rootDir).length();
                final String filePath = FileUtil.getCanonicalPath(file);
                final String resourcePath = filePath.substring(pos + 1).replace('\\', '/');
                final InputStream is = InputStreamUtil.create(file);

    private void setupMockComponents() {
        try {
            // Register mock system properties
            File propFile = File.createTempFile("test", ".properties");
            org.codelibs.core.io.FileUtil.writeBytes(propFile.getAbsolutePath(), new byte[0]);
            propFile.deleteOnExit();
            DynamicProperties mockProperties = new DynamicProperties(propFile) {
                @Override

 */
package org.codelibs.fess.helper;

import java.io.File;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;

import org.codelibs.core.io.FileUtil;
import org.codelibs.core.misc.DynamicProperties;
import org.codelibs.fess.Constants;
import org.codelibs.fess.app.service.DataConfigService;
import org.codelibs.fess.app.service.FileConfigService;

**Resource Management**: `AutoCloseable` throughout, `DeferredFileOutputStream` for large responses, connection pooling, background temp file deletion via `FileUtil.deleteInBackground()`

**Fault Tolerance**: `FaultTolerantClient` wrapper (retry, circuit breaker), `SwitchableHttpClient` for HTTP client fallback

---

## Key Components

### Core Classes

        designJspFile.getParentFile().mkdirs();
        FileUtil.writeBytes(designJspFile.getAbsolutePath(), "ok".getBytes());
        fileList = systemHelper.refreshDesignJspFiles();
        assertEquals(1, fileList.size());
        assertEquals("ok", FileUtil.readText(fileList.get(0).toFile()));
    }

    @Test
    public void test_updateSystemProperties() {

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.poi.util.StringUtil;
import org.codelibs.core.io.CloseableUtil;
import org.codelibs.core.io.CopyUtil;
import org.codelibs.core.io.FileUtil;
import org.codelibs.core.io.InputStreamUtil;
import org.codelibs.core.timer.TimeoutManager;
import org.codelibs.core.timer.TimeoutTask;
import org.codelibs.fess.crawler.Constants;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.beans.util.BeanUtil;
import org.codelibs.core.exception.ResourceNotFoundRuntimeException;
import org.codelibs.core.io.FileUtil;
import org.codelibs.core.io.ResourceUtil;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.lang.ThreadUtil;
import org.codelibs.curl.CurlResponse;
import org.codelibs.fesen.client.EngineInfo;

package org.codelibs.fess.helper;

import java.io.File;
import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;

import org.codelibs.core.io.FileUtil;
import org.codelibs.core.misc.DynamicProperties;
import org.codelibs.fess.Constants;
import org.codelibs.fess.entity.FacetInfo;
import org.codelibs.fess.entity.GeoInfo;
import org.codelibs.fess.entity.QueryContext;

import org.codelibs.core.beans.Converter;
import org.codelibs.core.beans.PropertyDesc;
import org.codelibs.core.beans.factory.BeanDescFactory;
import org.codelibs.core.beans.util.BeanUtil;
import org.codelibs.core.io.FileUtil;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.security.MessageDigestUtil;
import org.codelibs.fess.crawler.client.FesenClient;
import org.codelibs.fess.crawler.entity.OpenSearchAccessResult;