RatpackProperties.java

/*
 * Copyright 2012-2013 the original author or authors.
 *
 * 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 ratpack.spring.config;

import java.io.IOException;
import java.net.InetAddress;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.nio.file.FileSystemNotFoundException;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Collections;
import java.util.Objects;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;
import org.springframework.util.StringUtils;
import org.springframework.validation.Errors;
import org.springframework.validation.Validator;

import ratpack.server.ServerConfig;

@ConfigurationProperties(prefix = "ratpack", ignoreUnknownFields = false)
public class RatpackProperties implements Validator {

  @Value("#{environment.getProperty('server.port')}")
  private Integer port;

  private InetAddress address;

  private Integer sessionTimeout;

  private Resource basedir = initBaseDir();

  private String contextPath = "";

  private int maxThreads = ServerConfig.DEFAULT_THREADS; // Number of threads in protocol handler

  private String templatesPath = "templates";
  private int cacheSize = 100;
  private boolean development;
  private boolean staticallyCompile;

  @Override
  public boolean supports(Class<?> clazz) {
    return clazz.isAssignableFrom(RatpackProperties.class);
  }

  @Override
  public void validate(Object target, Errors errors) {
    RatpackProperties ratpack = (RatpackProperties) target;
    if (ratpack.contextPath == null) {
      errors.rejectValue("contextPath", "context.path.null", "Context path cannot be null");
    }
  }

  public String getTemplatesPath() {
    return templatesPath;
  }

  public void setTemplatesPath(String templatesPath) {
    this.templatesPath = templatesPath;
  }

  public int getCacheSize() {
    return cacheSize;
  }

  public void setCacheSize(int cacheSize) {
    this.cacheSize = cacheSize;
  }

  public boolean isDevelopment() {
    return development;
  }

  public void setDevelopment(boolean development) {
    this.development = development;
  }

  public boolean isStaticallyCompile() {
    return staticallyCompile;
  }

  public void setStaticallyCompile(boolean staticallyCompile) {
    this.staticallyCompile = staticallyCompile;
  }

  public int getMaxThreads() {
    return this.maxThreads;
  }

  public void setMaxThreads(int maxThreads) {
    this.maxThreads = maxThreads;
  }

  public Path getBasepath() {
    try {
      return resourceToPath(this.basedir.getURL());
    } catch (IOException e) {
      throw new IllegalStateException("Cannot extract base dir URL", e);
    }
  }

  public Resource getBasedir() {
    return this.basedir;
  }

  public void setBasedir(Resource basedir) {
    this.basedir = basedir;
  }

  public String getContextPath() {
    return this.contextPath;
  }

  public void setContextPath(String contextPath) {
    this.contextPath = contextPath;
  }

  public Integer getPort() {
    return this.port;
  }

  public void setPort(Integer port) {
    this.port = port;
  }

  public InetAddress getAddress() {
    return this.address;
  }

  public void setAddress(InetAddress address) {
    this.address = address;
  }

  public Integer getSessionTimeout() {
    return this.sessionTimeout;
  }

  public void setSessionTimeout(Integer sessionTimeout) {
    this.sessionTimeout = sessionTimeout;
  }

  static Path resourceToPath(URL resource) {

    Objects.requireNonNull(resource, "Resource URL cannot be null");
    URI uri;
    try {
      uri = resource.toURI();
    } catch (URISyntaxException e) {
      throw new IllegalArgumentException("Could not extract URI", e);
    }

    String scheme = uri.getScheme();
    if (scheme.equals("file")) {
      String path = uri.toString().substring("file:".length());
      if (path.contains("//")) {
        path = StringUtils.cleanPath(path.replace("//", ""));
      }
      return Paths.get(new FileSystemResource(path).getFile().toURI());
    }

    if (!scheme.equals("jar")) {
      throw new IllegalArgumentException("Cannot convert to Path: " + uri);
    }

    String s = uri.toString();
    int separator = s.indexOf("!/");
    URI fileURI = URI.create(s.substring(0, separator) + "!/");
    try {
      FileSystems.getFileSystem(fileURI);
    } catch (FileSystemNotFoundException e) {
      try {
        FileSystems.newFileSystem(fileURI, Collections.singletonMap("create", "true"));
      } catch (IOException e1) {
        throw new IllegalArgumentException("Cannot convert to Path: " + uri);
      }
    }
    return Paths.get(fileURI);
  }

  static Resource initBaseDir() {
    ClassPathResource classPath = new ClassPathResource("");
    try {
      if (classPath.getURL().toString().startsWith("jar:")) {
        return classPath;
      }
    } catch (IOException e) {
      // Ignore
    }
    FileSystemResource resources = new FileSystemResource("src/main/resources");
    if (resources.exists()) {
      return resources;
    }
    return new FileSystemResource(".");
  }

}