Getting Error when uploading xml file to Google Cloud Storage

Question

I want to upload file to Google Cloud Storage, However I am getting an error like:

java.lang.NoSuchMethodError: com.google.common.base.Preconditions.checkNotNull

The Format of xml file which I want to upload on Google Cloud Storage:

<set xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">

File and Google Bucket, where I want to upload file to bucket.

String fileName = "data.xml"

String fileBucket = "upload-file";

 public static void uploadFile(String fileName, String fileBucket)
            throws IOException {
        final GcsService gcsService = GcsServiceFactory.createGcsService(new RetryParams.Builder()
                .initialRetryDelayMillis(10)
                .retryMaxAttempts(10)
                .totalRetryPeriodMillis(50000)//15000
                .build());
        gcsService.createOrReplace(
                new GcsFilename(fileBucket, fileName),
                new GcsFileOptions.Builder().mimeType("application/xml")
                        .acl("public-read")
                        .cacheControl("public, max-age=0").build());
    }

Getting Error as following:

Jan 29, 2019 6:49:31 AM com.google.api.server.spi.SystemService invokeServiceMethod
SEVERE: exception occurred while calling backend method
java.lang.NoSuchMethodError: com.google.common.base.Preconditions.checkNotNull(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)Ljava/lang/Object;
    at com.google.appengine.tools.cloudstorage.GcsFileOptions$Builder.checkNotEmpty(GcsFileOptions.java:252)
    at com.google.appengine.tools.cloudstorage.GcsFileOptions$Builder.mimeType(GcsFileOptions.java:173)
    at com.vivoiz.healofy.backend.v2.helpers.utils.AppUtilities.uploadFileToGCS(AppUtilities.java:168)
    at com.vivoiz.healofy.backend.v2.apis.InternalApis.uploadFile(InternalApis.java:578)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.google.api.server.spi.SystemService.invokeServiceMethod(SystemService.java:351)
    at com.google.api.server.spi.handlers.EndpointsMethodHandler$RestHandler.handle(EndpointsMethodHandler.java:119)
    at com.google.api.server.spi.handlers.EndpointsMethodHandler$RestHandler.handle(EndpointsMethodHandler.java:102)
    at com.google.api.server.spi.dispatcher.PathDispatcher.dispatch(PathDispatcher.java:50)
    at com.google.api.server.spi.EndpointsServlet.service(EndpointsServlet.java:72)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:867)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1623)
    at com.googlecode.objectify.ObjectifyFilter.doFilter(ObjectifyFilter.java:48)
INFO     2019-01-29 06:49:31,105 module.py:861] v2: "GET /_ah/api/internalapis/v1/uploadFile HTTP/1.1" 503 454
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)
    at com.google.appengine.tools.development.devappserver2.RequestIdFilter.doFilter(RequestIdFilter.java:36)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)
    at com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:134)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)
    at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)
    at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:48)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)
    at com.google.appengine.tools.development.jetty9.StaticFileFilter.doFilter(StaticFileFilter.java:123)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1602)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)
    at com.google.appengine.tools.development.jetty9.DevAppEngineWebAppContext.doScope(DevAppEngineWebAppContext.java:94)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at com.google.appengine.tools.development.jetty9.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:595)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.eclipse.jetty.server.Server.handle(Server.java:502)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
    at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:132)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
    at java.lang.Thread.run(Thread.java:748)

Answer 1

To upload a file to the Google Cloud Storage, you need the StorageOptions services. You can see the documentation about Uploading Objects.

This will upload the Hello, Cloud Storage! string to a file called blob_name in the bucket called bucket. You just change the names accordingly to your project's needs.

To upload one of your local files. Create a function that will read the file's data and returns them to your main function that will upload the data to the bucket.

I did a little bit of coding myself and the following code, uploaded the file with the data that you are mentioning above, successfully.

---

The function that reads the file:

It will read the file form the local storage e.g. Cloud Shell and it will return all the data.

private String readFile(){
      // The name of the file to open.
        String fileName = "PATH/TO/THE/FILE/THAT/IS/GOING/TO/BE/UPLOADED/FILE_NAME/xml";

        // This will reference one line at a time
        String line = null;
        // This will be the full file after reading
        String output = "";

        try {
            // FileReader reads text files in the default encoding.
            FileReader fileReader = 
                new FileReader(fileName);

            // Always wrap FileReader in BufferedReader.
            BufferedReader bufferedReader = 
                new BufferedReader(fileReader);

            while((line = bufferedReader.readLine()) != null) {
                System.out.println(line);
                output = output + line;
            }   

            // Always close files.
            bufferedReader.close();         
        }
        catch(FileNotFoundException ex) {
            System.out.println(
                output = output + "Unable to open file '" + fileName + "'";         
        }
        catch(IOException ex) {
            System.out.println( 
                output = output + "Error reading file '" + fileName + "'";         
        }

      return output;
  }

---

The upload function:

It will use all the data that it will read from the file and uploaded them to a new file in the bucket. The difference between the documentation code is in line where ...readFile().getBytes(UTF_8)... is called. Instead of the string we add the function that is going to return all the data for upload.

public String uploadFile(){

        String bucket_name = "BUCKET_NAME";
        String file_name = "PATH/TO/WHERE/THE/FILE/WILL/BE/UPLOADED/FILE_NAME.xml"

        Storage storage = StorageOptions.getDefaultInstance().getService();
        BlobId blobId = BlobId.of(bucket_name, file_name);
        BlobInfo blobInfo = BlobInfo.newBuilder(blobId).setContentType("text/plain").build();
        Blob blob = storage.create(blobInfo, readFile().getBytes(UTF_8));
}