Java tutorial
/* * 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. */ package org.apache.solr.core; import org.apache.lucene.analysis.util.CharFilterFactory; import org.apache.lucene.analysis.util.ResourceLoader; import org.apache.lucene.analysis.util.ResourceLoaderAware; import org.apache.lucene.analysis.util.TokenFilterFactory; import org.apache.lucene.analysis.util.TokenizerFactory; import org.apache.lucene.analysis.util.WordlistLoader; import org.apache.lucene.codecs.Codec; import org.apache.lucene.codecs.DocValuesFormat; import org.apache.lucene.codecs.PostingsFormat; import org.apache.lucene.util.IOUtils; import org.apache.solr.common.SolrException; import org.apache.solr.handler.admin.CoreAdminHandler; import org.apache.solr.handler.component.SearchComponent; import org.apache.solr.handler.component.ShardHandlerFactory; import org.apache.solr.request.SolrRequestHandler; import org.apache.solr.response.QueryResponseWriter; import org.apache.solr.rest.RestManager; import org.apache.solr.schema.FieldType; import org.apache.solr.schema.ManagedIndexSchemaFactory; import org.apache.solr.schema.SimilarityFactory; import org.apache.solr.search.QParserPlugin; import org.apache.solr.update.processor.UpdateRequestProcessorFactory; import org.apache.solr.util.FileUtils; import org.apache.solr.util.plugin.SolrCoreAware; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import javax.naming.Context; import javax.naming.InitialContext; import javax.naming.NamingException; import javax.naming.NoInitialContextException; import java.io.Closeable; import java.io.File; import java.io.FileFilter; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStreamWriter; import java.lang.reflect.Constructor; import java.net.MalformedURLException; import java.net.URI; import java.net.URL; import java.net.URLClassLoader; import java.nio.charset.CharacterCodingException; import java.nio.charset.Charset; import java.nio.charset.StandardCharsets; import java.nio.file.Paths; import java.util.ArrayList; import java.util.Collections; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Properties; import java.util.concurrent.ConcurrentHashMap; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * @since solr 1.3 */ public class SolrResourceLoader implements ResourceLoader, Closeable { public static final Logger log = LoggerFactory.getLogger(SolrResourceLoader.class); static final String project = "solr"; static final String base = "org.apache" + "." + project; static final String[] packages = { "", "analysis.", "schema.", "handler.", "search.", "update.", "core.", "response.", "request.", "update.processor.", "util.", "spelling.", "handler.component.", "handler.dataimport.", "spelling.suggest.", "spelling.suggest.fst.", "rest.schema.analysis." }; protected URLClassLoader classLoader; private final String instanceDir; private String dataDir; private final List<SolrCoreAware> waitingForCore = Collections.synchronizedList(new ArrayList<SolrCoreAware>()); private final List<SolrInfoMBean> infoMBeans = Collections.synchronizedList(new ArrayList<SolrInfoMBean>()); private final List<ResourceLoaderAware> waitingForResources = Collections .synchronizedList(new ArrayList<ResourceLoaderAware>()); private static final Charset UTF_8 = StandardCharsets.UTF_8; //TODO: Solr5. Remove this completely when you obsolete putting <core> tags in solr.xml (See Solr-4196) private final Properties coreProperties; private volatile boolean live; // Provide a registry so that managed resources can register themselves while the XML configuration // documents are being parsed ... after all are registered, they are asked by the RestManager to // initialize themselves. This two-step process is required because not all resources are available // (such as the SolrZkClient) when XML docs are being parsed. private RestManager.Registry managedResourceRegistry; public synchronized RestManager.Registry getManagedResourceRegistry() { if (managedResourceRegistry == null) { managedResourceRegistry = new RestManager.Registry(); } return managedResourceRegistry; } /** * <p> * This loader will delegate to the context classloader when possible, * otherwise it will attempt to resolve resources using any jar files * found in the "lib/" directory in the specified instance directory. * </p> * * @param instanceDir - base directory for this resource loader, if null locateSolrHome() will be used. * @see #locateSolrHome */ public SolrResourceLoader(String instanceDir, ClassLoader parent, Properties coreProperties) { if (instanceDir == null) { this.instanceDir = SolrResourceLoader.locateSolrHome(); log.info("new SolrResourceLoader for deduced Solr Home: '{}'", this.instanceDir); } else { this.instanceDir = normalizeDir(instanceDir); log.info("new SolrResourceLoader for directory: '{}'", this.instanceDir); } this.classLoader = createClassLoader(null, parent); addToClassLoader("./lib/", null, true); reloadLuceneSPI(); this.coreProperties = coreProperties; } /** * <p> * This loader will delegate to the context classloader when possible, * otherwise it will attempt to resolve resources using any jar files * found in the "lib/" directory in the specified instance directory. * If the instance directory is not specified (=null), SolrResourceLoader#locateInstanceDir will provide one. * <p> */ public SolrResourceLoader(String instanceDir, ClassLoader parent) { this(instanceDir, parent, null); } /** * Adds every file/dir found in the baseDir which passes the specified Filter * to the ClassLoader used by this ResourceLoader. This method <b>MUST</b> * only be called prior to using this ResourceLoader to get any resources, otherwise * its behavior will be non-deterministic. You also have to {link @reloadLuceneSPI} * before using this ResourceLoader. * * <p>This method will quietly ignore missing or non-directory <code>baseDir</code> * folder. * * @param baseDir base directory whose children (either jars or directories of * classes) will be in the classpath, will be resolved relative * the instance dir. * @param filter The filter files must satisfy, if null all files will be accepted. * @param quiet Be quiet if baseDir does not point to a directory or if no file is * left after applying the filter. */ void addToClassLoader(final String baseDir, final FileFilter filter, boolean quiet) { File base = FileUtils.resolvePath(new File(getInstanceDir()), baseDir); if (base != null && base.exists() && base.isDirectory()) { File[] files = base.listFiles(filter); if (files == null || files.length == 0) { if (!quiet) { log.warn("No files added to classloader from lib: " + baseDir + " (resolved as: " + base.getAbsolutePath() + ")."); } } else { this.classLoader = replaceClassLoader(classLoader, base, filter); } } else { if (!quiet) { log.warn("Can't find (or read) directory to add to classloader: " + baseDir + " (resolved as: " + base.getAbsolutePath() + ")."); } } } /** * Reloads all Lucene SPI implementations using the new classloader. * This method must be called after {@link #addToClassLoader(String, FileFilter, boolean)} * and {@link #addToClassLoader(String,FileFilter,boolean)} before using * this ResourceLoader. */ void reloadLuceneSPI() { // Codecs: PostingsFormat.reloadPostingsFormats(this.classLoader); DocValuesFormat.reloadDocValuesFormats(this.classLoader); Codec.reloadCodecs(this.classLoader); // Analysis: CharFilterFactory.reloadCharFilters(this.classLoader); TokenFilterFactory.reloadTokenFilters(this.classLoader); TokenizerFactory.reloadTokenizers(this.classLoader); } private static URLClassLoader replaceClassLoader(final URLClassLoader oldLoader, final File base, final FileFilter filter) { if (null != base && base.canRead() && base.isDirectory()) { File[] files = base.listFiles(filter); if (null == files || 0 == files.length) return oldLoader; URL[] oldElements = oldLoader.getURLs(); URL[] elements = new URL[oldElements.length + files.length]; System.arraycopy(oldElements, 0, elements, 0, oldElements.length); for (int j = 0; j < files.length; j++) { try { URL element = files[j].toURI().normalize().toURL(); log.info("Adding '" + element.toString() + "' to classloader"); elements[oldElements.length + j] = element; } catch (MalformedURLException e) { SolrException.log(log, "Can't add element to classloader: " + files[j], e); } } ClassLoader oldParent = oldLoader.getParent(); IOUtils.closeWhileHandlingException(oldLoader); // best effort return URLClassLoader.newInstance(elements, oldParent); } // are we still here? return oldLoader; } /** * Convenience method for getting a new ClassLoader using all files found * in the specified lib directory. */ static URLClassLoader createClassLoader(final File libDir, ClassLoader parent) { if (null == parent) { parent = Thread.currentThread().getContextClassLoader(); } return replaceClassLoader(URLClassLoader.newInstance(new URL[0], parent), libDir, null); } public SolrResourceLoader(String instanceDir) { this(instanceDir, null, null); } /** Ensures a directory name always ends with a '/'. */ public static String normalizeDir(String path) { return (path != null && (!(path.endsWith("/") || path.endsWith("\\")))) ? path + File.separator : path; } public String[] listConfigDir() { File configdir = new File(getConfigDir()); if (configdir.exists() && configdir.isDirectory()) { return configdir.list(); } else { return new String[0]; } } public String getConfigDir() { return instanceDir + "conf" + File.separator; } public String getDataDir() { return dataDir; } public Properties getCoreProperties() { return coreProperties; } /** * EXPERT * <p/> * The underlying class loader. Most applications will not need to use this. * @return The {@link ClassLoader} */ public ClassLoader getClassLoader() { return classLoader; } /** Opens a schema resource by its name. * Override this method to customize loading schema resources. *@return the stream for the named schema */ public InputStream openSchema(String name) throws IOException { return openResource(name); } /** Opens a config resource by its name. * Override this method to customize loading config resources. *@return the stream for the named configuration */ public InputStream openConfig(String name) throws IOException { return openResource(name); } /** Opens any resource by its name. * By default, this will look in multiple locations to load the resource: * $configDir/$resource (if resource is not absolute) * $CWD/$resource * otherwise, it will look for it in any jar accessible through the class loader. * Override this method to customize loading resources. *@return the stream for the named resource */ @Override public InputStream openResource(String resource) throws IOException { InputStream is = null; try { File f0 = new File(resource), f = f0; if (!f.isAbsolute()) { // try $CWD/$configDir/$resource f = new File(getConfigDir() + resource).getAbsoluteFile(); } boolean found = f.isFile() && f.canRead(); if (!found) { // no success with $CWD/$configDir/$resource f = f0.getAbsoluteFile(); found = f.isFile() && f.canRead(); } // check that we don't escape instance dir if (found) { if (!Boolean.parseBoolean(System.getProperty("solr.allow.unsafe.resourceloading", "false"))) { final URI instanceURI = new File(getInstanceDir()).getAbsoluteFile().toURI().normalize(); final URI fileURI = f.toURI().normalize(); if (instanceURI.relativize(fileURI) == fileURI) { // no URI relativize possible, so they don't share same base folder throw new IOException( "For security reasons, SolrResourceLoader cannot load files from outside the instance's directory: " + f + "; if you want to override this safety feature and you are sure about the consequences, you can pass the system property " + "-Dsolr.allow.unsafe.resourceloading=true to your JVM"); } } // relativize() returned a relative, new URI, so we are fine! return new FileInputStream(f); } // Delegate to the class loader (looking into $INSTANCE_DIR/lib jars). // We need a ClassLoader-compatible (forward-slashes) path here! is = classLoader.getResourceAsStream(resource.replace(File.separatorChar, '/')); // This is a hack just for tests (it is not done in ZKResourceLoader)! // -> the getConfigDir's path must not be absolute! if (is == null && System.getProperty("jetty.testMode") != null && !new File(getConfigDir()).isAbsolute()) { is = classLoader.getResourceAsStream((getConfigDir() + resource).replace(File.separatorChar, '/')); } } catch (IOException ioe) { throw ioe; } catch (Exception e) { throw new IOException("Error opening " + resource, e); } if (is == null) { throw new IOException("Can't find resource '" + resource + "' in classpath or '" + new File(getConfigDir()).getAbsolutePath() + "'"); } return is; } /** * Accesses a resource by name and returns the (non comment) lines * containing data. * * <p> * A comment line is any line that starts with the character "#" * </p> * * @return a list of non-blank non-comment lines with whitespace trimmed * from front and back. * @throws IOException If there is a low-level I/O error. */ public List<String> getLines(String resource) throws IOException { return getLines(resource, UTF_8); } /** * Accesses a resource by name and returns the (non comment) lines containing * data using the given character encoding. * * <p> * A comment line is any line that starts with the character "#" * </p> * * @param resource the file to be read * @return a list of non-blank non-comment lines with whitespace trimmed * @throws IOException If there is a low-level I/O error. */ public List<String> getLines(String resource, String encoding) throws IOException { return getLines(resource, Charset.forName(encoding)); } public List<String> getLines(String resource, Charset charset) throws IOException { try { return WordlistLoader.getLines(openResource(resource), charset); } catch (CharacterCodingException ex) { throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Error loading resource (wrong encoding?): " + resource, ex); } } /* * A static map of short class name to fully qualified class name */ private static final Map<String, String> classNameCache = new ConcurrentHashMap<>(); // Using this pattern, legacy analysis components from previous Solr versions are identified and delegated to SPI loader: private static final Pattern legacyAnalysisPattern = Pattern.compile("((\\Q" + base + ".analysis.\\E)|(\\Q" + project + ".\\E))([\\p{L}_$][\\p{L}\\p{N}_$]+?)(TokenFilter|Filter|Tokenizer|CharFilter)Factory"); @Override public <T> Class<? extends T> findClass(String cname, Class<T> expectedType) { return findClass(cname, expectedType, empty); } /** * This method loads a class either with its FQN or a short-name (solr.class-simplename or class-simplename). * It tries to load the class with the name that is given first and if it fails, it tries all the known * solr packages. This method caches the FQN of a short-name in a static map in-order to make subsequent lookups * for the same class faster. The caching is done only if the class is loaded by the webapp classloader and it * is loaded using a shortname. * * @param cname The name or the short name of the class. * @param subpackages the packages to be tried if the cname starts with solr. * @return the loaded class. An exception is thrown if it fails */ public <T> Class<? extends T> findClass(String cname, Class<T> expectedType, String... subpackages) { if (subpackages == null || subpackages.length == 0 || subpackages == packages) { subpackages = packages; String c = classNameCache.get(cname); if (c != null) { try { return Class.forName(c, true, classLoader).asSubclass(expectedType); } catch (ClassNotFoundException e) { //this is unlikely log.error("Unable to load cached class-name : " + c + " for shortname : " + cname + e); } } } Class<? extends T> clazz = null; try { // first try legacy analysis patterns, now replaced by Lucene's Analysis package: final Matcher m = legacyAnalysisPattern.matcher(cname); if (m.matches()) { final String name = m.group(4); log.trace("Trying to load class from analysis SPI using name='{}'", name); try { if (CharFilterFactory.class.isAssignableFrom(expectedType)) { return clazz = CharFilterFactory.lookupClass(name).asSubclass(expectedType); } else if (TokenizerFactory.class.isAssignableFrom(expectedType)) { return clazz = TokenizerFactory.lookupClass(name).asSubclass(expectedType); } else if (TokenFilterFactory.class.isAssignableFrom(expectedType)) { return clazz = TokenFilterFactory.lookupClass(name).asSubclass(expectedType); } else { log.warn( "'{}' looks like an analysis factory, but caller requested different class type: {}", cname, expectedType.getName()); } } catch (IllegalArgumentException ex) { // ok, we fall back to legacy loading } } // first try cname == full name try { return clazz = Class.forName(cname, true, classLoader).asSubclass(expectedType); } catch (ClassNotFoundException e) { String newName = cname; if (newName.startsWith(project)) { newName = cname.substring(project.length() + 1); } for (String subpackage : subpackages) { try { String name = base + '.' + subpackage + newName; log.trace("Trying class name " + name); return clazz = Class.forName(name, true, classLoader).asSubclass(expectedType); } catch (ClassNotFoundException e1) { // ignore... assume first exception is best. } } throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Error loading class '" + cname + "'", e); } } finally { if (clazz != null) { //cache the shortname vs FQN if it is loaded by the webapp classloader and it is loaded // using a shortname if (clazz.getClassLoader() == SolrResourceLoader.class.getClassLoader() && !cname.equals(clazz.getName()) && (subpackages.length == 0 || subpackages == packages)) { //store in the cache classNameCache.put(cname, clazz.getName()); } // print warning if class is deprecated if (clazz.isAnnotationPresent(Deprecated.class)) { log.warn( "Solr loaded a deprecated plugin/analysis class [{}]. Please consult documentation how to replace it accordingly.", cname); } } } } static final String empty[] = new String[0]; @Override public <T> T newInstance(String name, Class<T> expectedType) { return newInstance(name, expectedType, empty); } private static final Class[] NO_CLASSES = new Class[0]; private static final Object[] NO_OBJECTS = new Object[0]; public <T> T newInstance(String cname, Class<T> expectedType, String... subpackages) { return newInstance(cname, expectedType, subpackages, NO_CLASSES, NO_OBJECTS); } public CoreAdminHandler newAdminHandlerInstance(final CoreContainer coreContainer, String cname, String... subpackages) { Class<? extends CoreAdminHandler> clazz = findClass(cname, CoreAdminHandler.class, subpackages); if (clazz == null) { throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Can not find class: " + cname + " in " + classLoader); } CoreAdminHandler obj = null; try { Constructor<? extends CoreAdminHandler> ctor = clazz.getConstructor(CoreContainer.class); obj = ctor.newInstance(coreContainer); } catch (Exception e) { throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Error instantiating class: '" + clazz.getName() + "'", e); } if (!live) { //TODO: Does SolrCoreAware make sense here since in a multi-core context // which core are we talking about ? if (obj instanceof ResourceLoaderAware) { assertAwareCompatibility(ResourceLoaderAware.class, obj); waitingForResources.add((ResourceLoaderAware) obj); } } return obj; } public <T> T newInstance(String cName, Class<T> expectedType, String[] subPackages, Class[] params, Object[] args) { Class<? extends T> clazz = findClass(cName, expectedType, subPackages); if (clazz == null) { throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Can not find class: " + cName + " in " + classLoader); } T obj = null; try { Constructor<? extends T> constructor = clazz.getConstructor(params); obj = constructor.newInstance(args); } catch (Error err) { log.error("Loading Class " + cName + " (" + clazz.getName() + ") triggered serious java error: " + err.getClass().getName(), err); throw err; } catch (Exception e) { throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Error instantiating class: '" + clazz.getName() + "'", e); } if (!live) { if (obj instanceof SolrCoreAware) { assertAwareCompatibility(SolrCoreAware.class, obj); waitingForCore.add((SolrCoreAware) obj); } if (obj instanceof ResourceLoaderAware) { assertAwareCompatibility(ResourceLoaderAware.class, obj); waitingForResources.add((ResourceLoaderAware) obj); } if (obj instanceof SolrInfoMBean) { //TODO: Assert here? infoMBeans.add((SolrInfoMBean) obj); } } return obj; } /** * Tell all {@link SolrCoreAware} instances about the SolrCore */ public void inform(SolrCore core) { this.dataDir = core.getDataDir(); // make a copy to avoid potential deadlock of a callback calling newInstance and trying to // add something to waitingForCore. SolrCoreAware[] arr; while (waitingForCore.size() > 0) { synchronized (waitingForCore) { arr = waitingForCore.toArray(new SolrCoreAware[waitingForCore.size()]); waitingForCore.clear(); } for (SolrCoreAware aware : arr) { aware.inform(core); } } // this is the last method to be called in SolrCore before the latch is released. live = true; } /** * Tell all {@link ResourceLoaderAware} instances about the loader */ public void inform(ResourceLoader loader) throws IOException { // make a copy to avoid potential deadlock of a callback adding to the list ResourceLoaderAware[] arr; while (waitingForResources.size() > 0) { synchronized (waitingForResources) { arr = waitingForResources.toArray(new ResourceLoaderAware[waitingForResources.size()]); waitingForResources.clear(); } for (ResourceLoaderAware aware : arr) { aware.inform(loader); } } } /** * Register any {@link org.apache.solr.core.SolrInfoMBean}s * @param infoRegistry The Info Registry */ public void inform(Map<String, SolrInfoMBean> infoRegistry) { // this can currently happen concurrently with requests starting and lazy components // loading. Make sure infoMBeans doesn't change. SolrInfoMBean[] arr; synchronized (infoMBeans) { arr = infoMBeans.toArray(new SolrInfoMBean[infoMBeans.size()]); waitingForResources.clear(); } for (SolrInfoMBean bean : arr) { // Too slow? I suspect not, but we may need // to start tracking this in a Set. if (!infoRegistry.containsValue(bean)) { try { infoRegistry.put(bean.getName(), bean); } catch (Exception e) { log.warn("could not register MBean '" + bean.getName() + "'.", e); } } } } /** * Determines the solrhome from the environment. * Tries JNDI (java:comp/env/solr/home) then system property (solr.solr.home); * if both fail, defaults to solr/ * @return the instance directory name */ /** * Finds the solrhome based on looking up the value in one of three places: * <ol> * <li>JNDI: via java:comp/env/solr/home</li> * <li>The system property solr.solr.home</li> * <li>Look in the current working directory for a solr/ directory</li> * </ol> * * The return value is normalized. Normalization essentially means it ends in a trailing slash. * @return A normalized solrhome * @see #normalizeDir(String) */ public static String locateSolrHome() { String home = null; // Try JNDI try { Context c = new InitialContext(); home = (String) c.lookup("java:comp/env/" + project + "/home"); log.info("Using JNDI solr.home: " + home); } catch (NoInitialContextException e) { log.info("JNDI not configured for " + project + " (NoInitialContextEx)"); } catch (NamingException e) { log.info("No /" + project + "/home in JNDI"); } catch (RuntimeException ex) { log.warn("Odd RuntimeException while testing for JNDI: " + ex.getMessage()); } // Now try system property if (home == null) { String prop = project + ".solr.home"; home = System.getProperty(prop); if (home != null) { log.info("using system property " + prop + ": " + home); } } // if all else fails, try if (home == null) { home = project + '/'; log.info(project + " home defaulted to '" + home + "' (could not find system property or JNDI)"); } return normalizeDir(home); } public String getInstanceDir() { return instanceDir; } /** * Keep a list of classes that are allowed to implement each 'Aware' interface */ private static final Map<Class, Class[]> awareCompatibility; static { awareCompatibility = new HashMap<>(); awareCompatibility.put(SolrCoreAware.class, new Class[] { CodecFactory.class, ManagedIndexSchemaFactory.class, QueryResponseWriter.class, SearchComponent.class, ShardHandlerFactory.class, SimilarityFactory.class, SolrRequestHandler.class, UpdateRequestProcessorFactory.class }); awareCompatibility.put(ResourceLoaderAware.class, new Class[] { CharFilterFactory.class, TokenFilterFactory.class, TokenizerFactory.class, QParserPlugin.class, FieldType.class }); } /** * Utility function to throw an exception if the class is invalid */ void assertAwareCompatibility(Class aware, Object obj) { Class[] valid = awareCompatibility.get(aware); if (valid == null) { throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Unknown Aware interface: " + aware); } for (Class v : valid) { if (v.isInstance(obj)) { return; } } StringBuilder builder = new StringBuilder(); builder.append("Invalid 'Aware' object: ").append(obj); builder.append(" -- ").append(aware.getName()); builder.append(" must be an instance of: "); for (Class v : valid) { builder.append("[").append(v.getName()).append("] "); } throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, builder.toString()); } @Override public void close() throws IOException { IOUtils.close(classLoader); } public List<SolrInfoMBean> getInfoMBeans() { return Collections.unmodifiableList(infoMBeans); } public static void persistConfLocally(SolrResourceLoader loader, String resourceName, byte[] content) { // Persist locally File confFile = new File(loader.getConfigDir(), resourceName); OutputStreamWriter writer = null; try { File parentDir = confFile.getParentFile(); if (!parentDir.isDirectory()) { if (!parentDir.mkdirs()) { final String msg = "Can't create managed schema directory " + parentDir.getAbsolutePath(); log.error(msg); throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, msg); } } final FileOutputStream out = new FileOutputStream(confFile); out.write(content); log.info("Written confile " + resourceName); } catch (IOException e) { final String msg = "Error persisting conf file " + resourceName; log.error(msg, e); throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, msg, e); } finally { org.apache.commons.io.IOUtils.closeQuietly(writer); try { FileUtils.sync(confFile); } catch (IOException e) { final String msg = "Error syncing conf file " + resourceName; log.error(msg, e); } } } public String resolve(String pathToResolve) { return Paths.get(instanceDir).resolve(pathToResolve).toString(); } }