Java FileProps类代码示例

import io.vertx.core.file.FileProps; //导入依赖的package包/类
public static Future<LocalFile> readFile(FileSystem fs, String filefullPathName) {
	LocalFile localFile = new LocalFile();

	return Future.<FileProps>future(future -> {
		fs.props(filefullPathName, future);
	}).compose(props -> {
		localFile.setSize(props.size());

		return Future.<AsyncFile>future(future -> {
			fs.open(filefullPathName, new OpenOptions().setRead(true).setWrite(false).setCreate(false), future);
		});
	}).compose(fileStream -> {

		localFile.setFile(fileStream);

		return Future.succeededFuture(localFile);
	});
}
 

import io.vertx.core.file.FileProps; //导入依赖的package包/类
void ls(Vertx vertx, String currentFile, String pathArg, Handler<AsyncResult<Map<String, FileProps>>> filesHandler) {
  Path base = currentFile != null ? new File(currentFile).toPath() : rootDir;
  String path = base.resolve(pathArg).toAbsolutePath().normalize().toString();
  vertx.executeBlocking(fut -> {
    FileSystem fs = vertx.fileSystem();
    if (fs.propsBlocking(path).isDirectory()) {
      LinkedHashMap<String, FileProps> result = new LinkedHashMap<>();
      for (String file : fs.readDirBlocking(path)) {
        result.put(file, fs.propsBlocking(file));
      }
      fut.complete(result);
    } else {
      throw new RuntimeException(path + ": No such file or directory");
    }
  }, filesHandler);
}
 

import io.vertx.core.file.FileProps; //导入依赖的package包/类
@org.junit.Test
public void testReportToFile() {
  FileSystem fs = vertx.fileSystem();
  String file = "target";
  assertTrue(fs.existsBlocking(file));
  assertTrue(fs.propsBlocking(file).isDirectory());
  suite.run(vertx, new TestOptions().addReporter(new ReportOptions().setTo("file:" + file)));
  String path = file + File.separator + "my_suite.txt";
  assertTrue(fs.existsBlocking(path));
  int count = 1000;
  while (true) {
    FileProps props = fs.propsBlocking(path);
    if (props.isRegularFile() && props.size() > 0) {
      break;
    } else {
      if (count-- > 0) {
        try {
          Thread.sleep(1);
        } catch (InterruptedException ignore) {
        }
      } else {
        fail();
      }
    }
  }
}
 

import io.vertx.core.file.FileProps; //导入依赖的package包/类
/**
 * Create all required header so content can be cache by Caching servers or Browsers
 *
 * @param request base HttpServerRequest
 * @param props   file properties
 */
private void writeCacheHeaders(HttpServerRequest request, FileProps props) {

  MultiMap headers = request.response().headers();

  if (cachingEnabled) {
    // We use cache-control and last-modified
    // We *do not use* etags and expires (since they do the same thing - redundant)
    headers.set("cache-control", "public, max-age=" + maxAgeSeconds);
    headers.set("last-modified", dateTimeFormatter.format(props.lastModifiedTime()));
    // We send the vary header (for intermediate caches)
    // (assumes that most will turn on compression when using static handler)
    if (sendVaryHeader && request.headers().contains("accept-encoding")) {
      headers.set("vary", "accept-encoding");
    }
  }

  // date header is mandatory
  headers.set("date", dateTimeFormatter.format(new Date()));
}
 

import io.vertx.core.file.FileProps; //导入依赖的package包/类
@Override
public void getOne(String path, Handler<AsyncResult<ChunkReadStream>> handler) {
  String absolutePath = Paths.get(root, path).toString();

  // check if chunk exists
  FileSystem fs = vertx.fileSystem();
  ObservableFuture<Boolean> observable = RxHelper.observableFuture();
  fs.exists(absolutePath, observable.toHandler());
  observable
    .flatMap(exists -> {
      if (!exists) {
        return Observable.error(new FileNotFoundException("Could not find chunk: " + path));
      }
      return Observable.just(exists);
    })
    .flatMap(exists -> {
      // get chunk's size
      ObservableFuture<FileProps> propsObservable = RxHelper.observableFuture();
      fs.props(absolutePath, propsObservable.toHandler());
      return propsObservable;
    })
    .map(props -> props.size())
    .flatMap(size -> {
      // open chunk
      ObservableFuture<AsyncFile> openObservable = RxHelper.observableFuture();
      OpenOptions openOptions = new OpenOptions().setCreate(false).setWrite(false);
      fs.open(absolutePath, openOptions, openObservable.toHandler());
      return openObservable.map(f -> new FileChunkReadStream(size, f));
    })
    .subscribe(readStream -> {
      // send chunk to peer
      handler.handle(Future.succeededFuture(readStream));
    }, err -> {
      handler.handle(Future.failedFuture(err));
    });
}
 

import io.vertx.core.file.FileProps; //导入依赖的package包/类
private PropReadFileStream(FileProps props, AsyncFile file, String path) {
	this.props = props;
	this.file = file;
	this.path = path;
}
 

import io.vertx.core.file.FileProps; //导入依赖的package包/类
void complete(Vertx vertx, String currentPath, String _prefix, Handler<AsyncResult<Map<String, Boolean>>> handler) {
  vertx.executeBlocking(fut -> {

    FileSystem fs = vertx.fileSystem();
    Path base = (currentPath != null ? new File(currentPath).toPath() : rootDir);

    int index = _prefix.lastIndexOf('/');
    String prefix;
    if (index == 0) {
      handler.handle(Future.failedFuture("todo"));
      return;
    } else if (index > 0) {
      base = base.resolve(_prefix.substring(0, index));
      prefix = _prefix.substring(index + 1);
    } else {
      prefix = _prefix;
    }

    LinkedHashMap<String, Boolean> matches = new LinkedHashMap<>();
    for (String path : fs.readDirBlocking(base.toAbsolutePath().normalize().toString())) {
      String name = path.substring(path.lastIndexOf('/') + 1);
      if (name.startsWith(prefix)) {
        FileProps props = fs.propsBlocking(path);
        matches.put(name.substring(prefix.length()) + (props.isDirectory() ? "/" : ""), props.isRegularFile());
      }
    }

    if (matches.size() > 1) {
      String common = Completion.findLongestCommonPrefix(matches.keySet());
      if (common.length() > 0) {
        matches.clear();
        matches.put(common, false);
      } else {
        LinkedHashMap<String, Boolean> tmp = new LinkedHashMap<>();
        matches.forEach((suffix, terminal) -> {
          tmp.put(prefix + suffix, terminal);
        });
        matches = tmp;
      }
    }

    fut.complete(matches);
  }, handler);


}
 

import io.vertx.core.file.FileProps; //导入依赖的package包/类
private void sendStatic(RoutingContext context, String path) {

    String file = null;

    if (!includeHidden) {
      file = getFile(path, context);
      int idx = file.lastIndexOf('/');
      String name = file.substring(idx + 1);
      if (name.length() > 0 && name.charAt(0) == '.') {
        // skip
        context.next();
        return;
      }
    }

    // Look in cache
    CacheEntry entry;
    if (cachingEnabled) {
      entry = propsCache().get(path);
      if (entry != null) {
        HttpServerRequest request = context.request();
        if ((filesReadOnly || !entry.isOutOfDate()) && entry.shouldUseCached(request)) {
          context.response().setStatusCode(NOT_MODIFIED.code()).end();
          return;
        }
      }
    }

    if (file == null) {
      file = getFile(path, context);
    }

    final String sfile = file;

    // verify if the file exists
    isFileExisting(context, sfile, exists -> {
      if (exists.failed()) {
        context.fail(exists.cause());
        return;
      }

      // file does not exist, continue...
      if (!exists.result()) {
        context.next();
        return;
      }

      // Need to read the props from the filesystem
      getFileProps(context, sfile, res -> {
        if (res.succeeded()) {
          FileProps fprops = res.result();
          if (fprops == null) {
            // File does not exist
            context.next();
          } else if (fprops.isDirectory()) {
            sendDirectory(context, path, sfile);
          } else {
            propsCache().put(path, new CacheEntry(fprops, System.currentTimeMillis()));
            sendFile(context, sfile, fprops);
          }
        } else {
          context.fail(res.cause());
        }
      });
    });
  }
 

import io.vertx.core.file.FileProps; //导入依赖的package包/类
private CacheEntry(FileProps props, long createDate) {
  this.props = props;
  this.createDate = createDate;
}
 

import io.vertx.core.file.FileProps; //导入依赖的package包/类
/**
 * Gets the filesystem props
 * 
 * @return
 */
public FileProps getProps() {
	return props;
}