add code to get uploadPartUrl

Author: fishercoder1534

src/main/java/b2SdkExamples/B2SdkExamples.java

@@ -2,34 +2,67 @@
 
 import com.backblaze.b2.client.B2StorageClient;
 import com.backblaze.b2.client.B2StorageClientFactory;
+import com.backblaze.b2.client.contentSources.B2ByteArrayContentSource;
+import com.backblaze.b2.client.contentSources.B2ContentTypes;
 import com.backblaze.b2.client.exceptions.B2Exception;
-import com.backblaze.b2.client.structures.B2Bucket;
-import com.backblaze.b2.client.structures.B2ListBucketsResponse;
+import com.backblaze.b2.client.structures.*;
 
 import java.util.List;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 
 public class B2SdkExamples {
     private static final String APPLICATION_KEY_ID = "xxx";
     private static final String APPLICATION_KEY = "yyy";
 
+
+
     private static final String USER_AGENT = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36";
 
+    private static final int minimumPartSize = 5000000;
+    private static final byte[] large_file_in_bytes = new byte[minimumPartSize + 1];
+
     public static void main(String... args) throws B2Exception {
         System.out.println("Hello world from B2SdkExamples..");
 //        B2StorageClient client = B2StorageClientFactory.createDefaultFactory().create(USER_AGENT);
         //set up B2 CLI
         //and then use b2 get-account-info to get applicationKeyId and applicationKey to fill in here and run
         B2ListBucketsResponse b2ListBucketsResponse;
-        try (B2StorageClient b2StorageClient = B2StorageClientFactory.createDefaultFactory().create(APPLICATION_KEY_ID, APPLICATION_KEY, USER_AGENT)) {
-            b2ListBucketsResponse = b2StorageClient.listBuckets();
+        try (B2StorageClient b2Client = B2StorageClientFactory.createDefaultFactory().create(APPLICATION_KEY_ID, APPLICATION_KEY, USER_AGENT)) {
+            b2ListBucketsResponse = b2Client.listBuckets();
             List<B2Bucket> buckets = b2ListBucketsResponse.getBuckets();
             System.out.println("buckets.size() is: " + buckets.size());
+            B2Bucket bucketOne = null;
             for (B2Bucket b2Bucket : buckets) {
                 System.out.println("this bucket info is: " + b2Bucket.getBucketInfo());
                 System.out.println("this bucket getBucketName is: " + b2Bucket.getBucketName());
+                bucketOne = b2Bucket;
+                break;
             }
-            String b2AccountId = b2StorageClient.getAccountId();
+            String b2AccountId = b2Client.getAccountId();
             System.out.println("b2AccountId is: " + b2AccountId);
+
+            B2FileVersion largeFile = b2Client.startLargeFile(
+                    B2StartLargeFileRequest
+                            .builder(bucketOne.getBucketId(), "this_is_a_large_test_file_jsun", "text/plain")
+                            .build()
+            );
+            B2UploadPartUrlResponse uploadPartUrl = b2Client.getUploadPartUrl(B2GetUploadPartUrlRequest.builder(largeFile.getFileId()).build());
+            System.out.println("uploadPartUrl.getFileId() is: " + uploadPartUrl.getFileId());
+            System.out.println("uploadPartUrl.getUploadUrl() is: " + uploadPartUrl.getUploadUrl());
+//            example output:
+//            uploadPartUrl.getFileId() is: 4_zc0c2ee6e6dccd2d788960d17_f231f3059ce9d1672_d20231118_m042524_c004_v0402007_t0004_u01700281524855
+//            uploadPartUrl.getUploadUrl() is: https://pod-040-2007-12.backblaze.com/b2api/v2/b2_upload_part/4_zc0c2ee6e6dccd2d788960d17_f231f3059ce9d1672_d20231118_m042524_c004_v0402007_t0004_u01700281524855/0014
+
+            final B2UploadFileRequest request = B2UploadFileRequest.builder(
+                    bucketOne.getBucketId(),
+                    "largeFile",
+                    B2ContentTypes.TEXT_PLAIN,
+                    B2ByteArrayContentSource.build(large_file_in_bytes)
+            ).build();
+            ExecutorService executor = Executors.newScheduledThreadPool(15);
+            B2FileVersion uploaded = b2Client.uploadLargeFile(request, executor);
+            System.out.println("uploaded.getLargeFileSha1OrNull(): " + uploaded.getLargeFileSha1OrNull());
         }
         System.out.println("Finished running in main method.");
     }